Adding intial JS extension spec

It was a race condition.

.github/actions/spell-check/allow/code.txt

@@ -432,3 +432,6 @@ SHELLEXPERIENCEHOST
 SHELLHOST
 STARTMENUEXPERIENCEHOST
 WIDGETBOARD
+
+# URIs
+actioncenter

.github/actions/spell-check/allow/zoomit.txt

@@ -1,23 +1,51 @@
 accelscroll
 acq
+ADDTO
+ADDTOOL
 adr
 Adr
+ALWAYSTIP
 APPLYTOSUBMENUS
+ARCHMASK
+archs
 AUDCLNT
+autocorr
+avx
 axisdefer
 axisflip
 axisstart
+backlight
+BEOS
+bfi
+BFIN
+bfly
 BGRX
 bitmaps
+bitrev
 blits
+Borgerding
+Borland
+breakc
 BREAKSCR
 BUFFERFLAGS
+bugzilla
 Cands
 capturepath
+cbs
 centiseconds
+cexp
+cfx
+cfy
+cgem
+cifx
+cify
 CLASSW
 coeffs
+colblocks
+constantbuffer
 coprime
+cpuid
+cpx
 CREATEDIBSECTION
 CREATESTRUCTW
 crossfades
@@ -28,109 +56,216 @@ CTLCOLORDLG
 CTLCOLOREDIT
 CTLCOLORLISTBOX
 CTrim
+CVTEPI
 DBuffer
+dcl
+dct
 ddx
 ddy
+Deinterleave
+denoise
+denoised
 DEVSOURCE
 DFCS
+DIVSCALAR
+DJGPP
 dlg
 dlu
+dnn
 DONTCARE
 downsample
 DRAWITEM
 DRAWITEMSTRUCT
 droppedband
 Droppedband
+DSPs
 dsum
 dupburst
 dupsegments
 DWLP
+eband
+ebx
+ECX
 EDITCONTROL
+EDSP
+emmintrin
+EMX
 ENABLEHOOK
+endloop
 ENDOFSTREAM
+ener
+enh
+ettings
 expectedlock
+expf
+fabs
 fabsf
+facbuf
 fastscroll
 FDE
+ffast
+FIXDIV
+floorf
+fmadd
+fout
+fstride
+fxc
 GETCHANNELRECT
 GETCHECK
 GETCOUNT
+GETDISPINFO
 GETSCREENSAVEACTIVE
 GETSCREENSAVETIMEOUT
 GETTHUMBRECT
 GIFs
+glu
+groupshared
+gru
 hcfdark
 hcfwhitespace
+hlsl
+Hsieh
+hstride
 HTBOTTOMRIGHT
 HTHEME
 htol
 ICONINFORMATION
 ICONWARNING
+idct
+IDIn
+IDISHWND
+ifft
 igc
+ilog
+imad
+imax
+imin
+immintrin
 Inj
+interp
+inttypes
+ishl
+itof
 jumprecover
+kfft
+kheight
+kissfft
 KSDATAFORMAT
+ksize
+ktime
+lastg
 latestcapture
 ldx
 LEFTNOWORDWRAP
 legitjumps
+lenmem
 letterbox
 lld
+lldx
 llu
 llums
 logfont
 lookback
+lpc
+lpcnet
+LPNMHDR
+LPNMTTDISPINFO
 lround
 lte
 luma
 Luma
+maj
 manualdrop
 maskcache
+maxabs
+maxcorr
+MAXFACTORS
+maxperiod
 maxstep
+memalign
+memid
+memneeded
 MENUINFO
 MFSTARTUP
 mfxhw
 mic
 middledrop
+minperiod
+MIPSr
 MJPEG
 MMRESULT
 momentumreversal
+movc
 mrate
 mrt
+MULBYSCALAR
+MULC
+MWERKS
+mycfg
 narrowstrip
+nbak
+nbytes
 ncapture
+nchw
 ncm
 nduplicates
+nfft
+NHWC
 niterations
 nmonitor
+nnet
 NONCLIENTMETRICS
 NONOTIFY
 nonvle
+normf
 nredraw
 nstop
 nsubpixel
 ntorn
+numthreads
 nvw
+Octasic
 osc
+OSCE
+ovflw
 OWNERDRAW
 PBGRA
 periodictrap
-pillarbox
 pfdc
+pillarbox
 playhead
+pnmh
 pointerreuse
+PPW
+prereq
+PSHR
+pstdint
 PSWA
 pwfx
+QCONST
 qpc
 Qpc
 quantums
+qweight
+RCSEGMODEL
 RCZOOMITSCR
 readback
 READERF
 realcapture
 REFKNOWNFOLDERID
+relu
 reposted
 RETURNCMD
+rnn
+rnnoise
+rotateleft
+rsqrt
+rtcd
+RTEXT
+RTH
+rtvs
+SCALEIN
+SCALEOUT
 SCREENSAVE
 SCRNSAVE
 SCRNSAVECONFIGURE
@@ -138,43 +273,80 @@ scrnsavw
 Scrnsavw
 scrollramp
 SCROLLSIZEGRIP
+selfie
 selftest
 SETBARCOLOR
 SETBKCOLOR
 SETDEFID
 SETRECT
 SETSCREENSAVETIMEOUT
+SETTIPSIDE
+sgem
+sgemv
+sgv
 SHAREMODE
 SHAREVIOLATION
 shortlist
+simde
+siv
 slowthenfast
 smallstart
 SNIPOCR
+softmax
 sqrtf
+SROUND
+srvs
 ssi
 startuprecovery
+stdint
 stf
 stopafter
 STREAMFLAGS
+SUBFROM
+subias
 submix
 sxx
 sxy
+symbian
 synthesising
 syy
 tallportal
+TBTS
 tci
 tcsicmp
+TEXTCALLBACK
 TEXTMETRIC
+tgsm
+THIRDPARTY
 tinystep
 tme
 toolbars
+TOOLINFO
 TRACKMOUSEEVENT
+TRIANGLELIST
+TTM
+TTN
+TWID
+UADD
+uav
+uavs
+uge
 Unadvise
+upscaled
+upscales
+USUB
+utof
+vad
 vaddq
 vaddvq
+valgrind
+Valin
 vandq
+vblank
 vcgeq
 vdup
+vectorizer
+VERTID
 VIDCAP
 vld
 vle
@@ -184,6 +356,7 @@ vminq
 vmlal
 vmull
 vqaddq
+VSHR
 vshrn
 vsntprintf
 vsnwprintf
@@ -194,7 +367,9 @@ WAVEFORMATEXTENSIBLE
 webcam
 Webcam
 webcams
+Wextra
 wfopen
+WGC
 wideportal
 wil
 WMU
@@ -202,11 +377,46 @@ wrapjump
 wtol
 WTSSESSION
 WTSUn
+wxyz
+xchg
+xcorr
 XEnd
+Xfl
+Xiang
+Xiph
+xmmintrin
+xptr
+xshift
 XStart
 XStep
+xxxy
+xxyx
+xxyz
+xyw
+xywx
+xyxx
+xyxz
+xyzw
+xyzx
+xzwx
+xzxx
+Yfl
 YInternal
+yshift
+YUV
+yyyx
+yyzw
+yzw
+yzwy
+yzyy
+Zhou
+Zhu
 ZMBS
 zncc
 Zncc
 ZNCC
+zrh
+zwzz
+zyzw
+zzwz
+zzzw

.github/actions/spell-check/excludes.txt

@@ -112,8 +112,6 @@
 ^src/modules/cmdpal/Microsoft\.CmdPal\.UI/Settings/InternalPage\.SampleData\.cs$
 ^src/modules/cmdpal/Tests/Microsoft\.CmdPal\.Common\.UnitTests/.*\.TestData\.cs$
 ^src/modules/cmdpal/Tests/Microsoft\.CmdPal\.Common\.UnitTests/Text/.*\.cs$
-^src/modules/cmdpal/Tests/Microsoft\.CommandPalette\.Extensions\.Toolkit\.UnitTests/FuzzyMatcherComparisonTests.cs$
-^src/modules/cmdpal/Tests/Microsoft\.CommandPalette\.Extensions\.Toolkit\.UnitTests/FuzzyMatcherDiacriticsTests.cs$
 ^src/modules/colorPicker/ColorPickerUI/Shaders/GridShader\.cso$
 ^src/modules/launcher/Plugins/Microsoft\.PowerToys\.Run\.Plugin\.TimeDate/Properties/
 ^src/modules/MouseUtils/MouseJumpUI/MainForm\.resx$
@@ -137,6 +135,8 @@
 ^src/modules/previewpane/SvgPreviewHandler/SvgHTMLPreviewGenerator\.cs$
 ^src/modules/previewpane/UnitTests-MarkdownPreviewHandler/HelperFiles/MarkdownWithHTMLImageTag\.txt$
 ^src/modules/registrypreview/RegistryPreviewUILib/Controls/HexBox/.*$
+^src/modules/ZoomIt/ZoomIt/rnnoise/
+^src/modules/ZoomIt/ZoomIt/selfie_segmentation\.onnx$
 ^src/modules/ZoomIt/ZoomIt/ZoomIt\.idc$
 ^src/Monaco/
 ^tools/project_template/ModuleTemplate/resource\.h$

.github/actions/spell-check/expect.txt

@@ -113,7 +113,6 @@ azman
 azureaiinference
 azureinference
 azureopenai
-Backlight
 backticks
 Badflags
 Badmode
@@ -472,7 +471,6 @@ DWMWINDOWATTRIBUTE
 DWMWINDOWMAXIMIZEDCHANGE
 DWORDLONG
 dworigin
-DWRITE
 dxgi
 Dxva
 eab
@@ -998,7 +996,6 @@ luid
 lusrmgr
 LVDS
 LWA
-LWIN
 LZero
 MAGTRANSFORM
 makeappx
@@ -1208,7 +1205,6 @@ nonclient
 NONCLIENTMETRICSW
 NONELEVATED
 nonspace
-nonstd
 NOOWNERZORDER
 NOPARENTNOTIFY
 NOPREFIX
@@ -1422,7 +1418,6 @@ Prefixer
 Premul
 prependpath
 prepopulate
-Prereq
 prevhost
 previewer
 PREVIEWHANDLERFRAMEINFO
@@ -2000,7 +1995,6 @@ valuegenerator
 VARTYPE
 vbcscompiler
 vcamp
-VCENTER
 vcgtq
 VCINSTALLDIR
 vcp
@@ -2038,7 +2032,6 @@ vorrq
 VOS
 vpaddlq
 vqsubq
-VREDRAW
 vreinterpretq
 VSC
 VSCBD

.github/actions/spell-check/patterns.txt

@@ -312,3 +312,9 @@ ms-windows-store://\S+
 
 # ANSI color codes
 (?:\\(?:u00|x)1[Bb]|\\03[1-7]|\x1b|\\u\{1[Bb]\})\[\d+(?:;\d+)*m
+
+# Special licenses text from RNNoise (BSD-style disclaimer: ``AS IS'')
+``AS IS''
+
+# Old school moniker for macOS from RNNoise
+MacOS

.gitignore

@@ -19,6 +19,9 @@
 [Rr]eleases/
 x64/
 x86/
+!**/rnnoise/
+!**/rnnoise/x86/
+!**/rnnoise/x86/**
 ARM64/
 bld/
 [Bb]in/
@@ -375,3 +378,6 @@ installer/*/*.wxs.bk
 vcpkg_installed/
 
 deps/vcpkg/
+
+# Superpowers-generated docs (specs, design, plans) — local-only, not committed
+docs/superpowers/

Directory.Packages.props

@@ -78,10 +78,10 @@
     <PackageVersion Include="Microsoft.Windows.CsWinRT" Version="2.2.0" />
     <PackageVersion Include="Microsoft.Windows.ImplementationLibrary" Version="1.0.250325.1"/>
     <PackageVersion Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.26100.6901" />
-    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="2.0.1" />
-    <PackageVersion Include="Microsoft.WindowsAppSDK.Foundation" Version="2.0.20" />
-    <PackageVersion Include="Microsoft.WindowsAppSDK.AI" Version="2.0.185" />
-    <PackageVersion Include="Microsoft.WindowsAppSDK.Runtime" Version="2.0.1" />
+    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="2.2.0" />
+    <PackageVersion Include="Microsoft.WindowsAppSDK.Foundation" Version="2.1.0" />
+    <PackageVersion Include="Microsoft.WindowsAppSDK.AI" Version="2.2.3" />
+    <PackageVersion Include="Microsoft.WindowsAppSDK.Runtime" Version="2.2.0" />
     <PackageVersion Include="Microsoft.Xaml.Behaviors.WinUI.Managed" Version="2.0.9" />
     <PackageVersion Include="Microsoft.Xaml.Behaviors.Wpf" Version="1.1.39" />
     <PackageVersion Include="ModernWpfUI" Version="0.9.4" />

doc/thirdPartyRunPlugins.md

@@ -79,4 +79,4 @@ Below are community created plugins that target a website or software.  They are
 | [Linear](https://github.com/vednig/powertoys-linear) | [vednig](https://github.com/vednig) | Create Linear Issues directly from Powertoys Run |
 | [PerplexitySearchShortcut](https://github.com/0x6f677548/PowerToys-Run-PerplexitySearchShortcut) | [0x6f677548](https://github.com/0x6f677548) | Search Perplexity |
 | [SpeedTest](https://github.com/ruslanlap/PowerToysRun-SpeedTest) | [ruslanlap](https://github.com/ruslanlap) | One-command internet speed tests with real-time results, modern UI, and shareable links. |
-| [DiskAnalyzer](https://github.com/thetsaw/PowerToys.Plugin) | [thetsaw](https://github.com/thetsaw) | Scan folders, find the largest files, and view drive space usage with visual progress bars. |
+| [DiskAnalyzer](https://github.com/valley-soft/powertoys-diskanalyzer) | [ValleySoft](https://github.com/valley-soft) | Scan folders, find the largest files, and view drive space usage. |

src/common/CalculatorEngineCommon/CalculatorEngineCommon.vcxproj

@@ -73,7 +73,8 @@
       <PrecompiledHeaderOutputFile>$(IntDir)pch.pch</PrecompiledHeaderOutputFile>
       <WarningLevel>Level4</WarningLevel>
       <AdditionalOptions>%(AdditionalOptions) /bigobj</AdditionalOptions>
-      <PreprocessorDefinitions>_WINRT_DLL;WINRT_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <!-- TODO: _SILENCE_EXPERIMENTAL_COROUTINE_DEPRECATION_WARNINGS: suppress VS 2026 STL hard error for <experimental/coroutine> until the code is ported to <coroutine> -->
+      <PreprocessorDefinitions>_WINRT_DLL;WINRT_LEAN_AND_MEAN;_SILENCE_EXPERIMENTAL_COROUTINE_DEPRECATION_WARNINGS;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>../../..;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <AdditionalUsingDirectories>$(WindowsSDK_WindowsMetadata);$(AdditionalUsingDirectories)</AdditionalUsingDirectories>
     </ClCompile>

src/modules/ShortcutGuide/ShortcutGuide.Ui/Helpers/ManifestInterpreter.cs

@@ -102,19 +102,18 @@ namespace ShortcutGuide.Helpers
         /// <summary>
         /// Retrieves all application IDs that should be displayed, based on the foreground window and background processes.
         /// </summary>
+        /// <param name="foregroundWindowHandle">The window handle captured before Shortcut Guide UI takes focus.</param>
         /// <returns>
         /// A dictionary mapping each application ID to the full path of the executable
         /// that caused the match (used for icon extraction), or <c>null</c> when no
         /// specific executable is associated (for example, wildcard filters like the
         /// default shell).
         /// </returns>
-        public static Dictionary<string, string?> GetAllCurrentApplicationIds()
+        public static Dictionary<string, string?> GetAllCurrentApplicationIds(nint foregroundWindowHandle)
         {
-            nint handle = NativeMethods.GetForegroundWindow();
-
             Dictionary<string, string?> applicationIds = new(StringComparer.Ordinal);
 
-            if (NativeMethods.GetWindowThreadProcessId(handle, out uint processId) > 0)
+            if (NativeMethods.GetWindowThreadProcessId(foregroundWindowHandle, out uint processId) > 0)
             {
                 string? name = null;
                 string? executablePath = null;

src/modules/ShortcutGuide/ShortcutGuide.Ui/Program.cs

@@ -21,9 +21,12 @@ namespace ShortcutGuide
     {
         public static Thread CopyAndIndexGenerationThread { get; private set; } = null!;
 
+        public static nint ForegroundWindowHandle { get; private set; } = nint.Zero;
+
         [STAThread]
         public static void Main(string[] args)
         {
+            ForegroundWindowHandle = NativeMethods.GetForegroundWindow();
             Logger.InitializeLogger("\\ShortcutGuide\\Logs");
 
             // The module interface passes: <powertoys_pid> [telemetry]

src/modules/ShortcutGuide/ShortcutGuide.Ui/ShortcutGuideXAML/MainWindow.xaml.cs

@@ -53,7 +53,7 @@ namespace ShortcutGuide
             _getAppIdsTask = Task.Run(() =>
             {
                 Program.CopyAndIndexGenerationThread.Join();
-                _currentApplicationIds = ManifestInterpreter.GetAllCurrentApplicationIds();
+                _currentApplicationIds = ManifestInterpreter.GetAllCurrentApplicationIds(Program.ForegroundWindowHandle);
                 return _currentApplicationIds;
             });
 

src/modules/ZoomIt/ZoomIt/AudioSampleGenerator.cpp

@@ -34,15 +34,17 @@ namespace winrt
     using namespace Windows::Devices::Enumeration;
 }
 
-AudioSampleGenerator::AudioSampleGenerator(bool captureMicrophone, bool captureSystemAudio, bool micMonoMix)
+AudioSampleGenerator::AudioSampleGenerator(bool captureMicrophone, bool captureSystemAudio, bool mixMicrophoneMono, bool useNoiseCancellation)
     : m_captureMicrophone(captureMicrophone)
     , m_captureSystemAudio(captureSystemAudio)
-    , m_micMonoMix(micMonoMix)
+    , m_mixMicrophoneMono(mixMicrophoneMono)
+    , m_useNoiseCancellation(useNoiseCancellation)
 {
     OutputDebugStringA(("AudioSampleGenerator created, captureMicrophone=" +
         std::string(captureMicrophone ? "true" : "false") +
         ", captureSystemAudio=" + std::string(captureSystemAudio ? "true" : "false") +
-        ", micMonoMix=" + std::string(micMonoMix ? "true" : "false") + "\n").c_str());
+        ", mixMicrophoneMono=" + std::string(mixMicrophoneMono ? "true" : "false") +
+        ", useNoiseCancellation=" + std::string(useNoiseCancellation ? "true" : "false") + "\n").c_str());
     m_audioEvent.create(wil::EventOptions::ManualReset);
     m_endEvent.create(wil::EventOptions::ManualReset);
     m_startEvent.create(wil::EventOptions::ManualReset);
@@ -158,8 +160,24 @@ winrt::IAsyncAction AudioSampleGenerator::InitializeAsync()
             throw winrt::hresult_error(E_FAIL, L"Failed to initialize loopback audio capture!");
         }
 
+        // Initialize noise suppressor for microphone audio if enabled
+        if (m_useNoiseCancellation && m_captureMicrophone)
+        {
+            m_noiseSuppressor = std::make_unique<NoiseSuppressor>();
+            OutputDebugStringA("Noise cancellation enabled for microphone\n");
+        }
+
         m_audioGraph.QuantumStarted({ this, &AudioSampleGenerator::OnAudioQuantumStarted });
 
+        // Start the AudioGraph now so the microphone device begins warming up
+        // during the remaining recording initialization (transcoder setup, etc.).
+        // OnAudioQuantumStarted returns early while m_started is false, so audio
+        // samples are discarded until Start() is called.  The side-effect of
+        // starting the graph early is that the system mic-active icon appears
+        // sooner, which also triggers a desktop-content change that helps
+        // unblock the WGC frame pool wait in OnMediaStreamSourceStarting.
+        m_audioGraph.Start();
+
         m_asyncInitialized.SetEvent();
     }
 }
@@ -205,67 +223,65 @@ std::optional<winrt::MediaStreamSample> AudioSampleGenerator::TryGetNextSample()
         }
     }
 
+    // Wait for audio samples to become available, retrying on spurious wakes
+    // (e.g. when OnAudioQuantumStarted signals m_audioEvent but the quantum
+    // produced an empty buffer so m_samples is still empty).
+    for (;;)
     {
-        auto lock = m_lock.lock_exclusive();
-        if (m_samples.empty() && m_endEvent.is_signaled())
         {
+            auto lock = m_lock.lock_exclusive();
+            if (m_samples.empty() && m_endEvent.is_signaled())
+            {
+                return std::nullopt;
+            }
+            else if (!m_samples.empty())
+            {
+                std::optional result(m_samples.front());
+                m_samples.pop_front();
+                return result;
+            }
+        }
+
+        m_audioEvent.ResetEvent();
+        std::vector<HANDLE> events = { m_endEvent.get(), m_audioEvent.get() };
+        auto waitResult = WaitForMultipleObjectsEx(static_cast<DWORD>(events.size()), events.data(), false, INFINITE, false);
+        auto eventIndex = -1;
+        switch (waitResult)
+        {
+        case WAIT_OBJECT_0:
+        case WAIT_OBJECT_0 + 1:
+            eventIndex = waitResult - WAIT_OBJECT_0;
+            break;
+        }
+        WINRT_VERIFY(eventIndex >= 0);
+
+        auto signaledEvent = events[eventIndex];
+        if (signaledEvent == m_endEvent.get())
+        {
+            // End was signaled, but check for any remaining samples before returning nullopt
+            auto lock = m_lock.lock_exclusive();
+            if (!m_samples.empty())
+            {
+                std::optional result(m_samples.front());
+                m_samples.pop_front();
+                return result;
+            }
             return std::nullopt;
         }
-        else if (!m_samples.empty())
-        {
-            std::optional result(m_samples.front());
-            m_samples.pop_front();
-            return result;
-        }
-    }
-
-    m_audioEvent.ResetEvent();
-    std::vector<HANDLE> events = { m_endEvent.get(), m_audioEvent.get() };
-    auto waitResult = WaitForMultipleObjectsEx(static_cast<DWORD>(events.size()), events.data(), false, INFINITE, false);
-    auto eventIndex = -1;
-    switch (waitResult)
-    {
-    case WAIT_OBJECT_0:
-    case WAIT_OBJECT_0 + 1:
-        eventIndex = waitResult - WAIT_OBJECT_0;
-        break;
-    }
-    WINRT_VERIFY(eventIndex >= 0);
-
-    auto signaledEvent = events[eventIndex];
-    if (signaledEvent == m_endEvent.get())
-    {
-        // End was signaled, but check for any remaining samples before returning nullopt
-        auto lock = m_lock.lock_exclusive();
-        if (!m_samples.empty())
-        {
-            std::optional result(m_samples.front());
-            m_samples.pop_front();
-            return result;
-        }
-        return std::nullopt;
-    }
-    else
-    {
-        auto lock = m_lock.lock_exclusive();
-        if (m_samples.empty())
-        {
-            // Spurious wake or race - no samples available
-            // If end is signaled, return nullopt
-            return m_endEvent.is_signaled() ? std::nullopt : std::optional<winrt::MediaStreamSample>{};
-        }
-        std::optional result(m_samples.front());
-        m_samples.pop_front();
-        return result;
+        // m_audioEvent was signaled — loop back to check m_samples again.
+        // If the quantum produced an empty buffer, m_samples will still be
+        // empty and we'll wait for the next quantum.
     }
 }
 
-void AudioSampleGenerator::Start()
+void AudioSampleGenerator::Start(int64_t videoStartTimestamp)
 {
     CheckInitialized();
+    m_videoStartTimestamp = videoStartTimestamp;
     auto expected = false;
     if (m_started.compare_exchange_strong(expected, true))
     {
+        OutputDebugStringW( L"[AudioGen] Start(): m_started set to true, setting m_startEvent\n" );
         m_endEvent.ResetEvent();
         m_startEvent.SetEvent();
 
@@ -284,7 +300,7 @@ void AudioSampleGenerator::Start()
             m_loopbackCapture->Start();
         }
 
-        m_audioGraph.Start();
+        // AudioGraph was already started in InitializeAsync for mic warmup.
     }
 }
 
@@ -611,12 +627,21 @@ void AudioSampleGenerator::CombineQueuedSamples()
 
 void AudioSampleGenerator::OnAudioQuantumStarted(winrt::AudioGraph const& sender, winrt::IInspectable const& args)
 {
-    // Don't process if we're not actively recording
+    // Don't process if we're not actively recording, but DO drain the
+    // output node so stale audio doesn't accumulate during mic warmup.
+    // Without this, the first GetFrame() after m_started becomes true
+    // would return several seconds of buffered audio, confusing the
+    // transcoder's A/V interleaving.
     if (!m_started.load())
     {
+        auto frame = m_audioOutputNode.GetFrame();
+        (void)frame;  // discard
         return;
     }
 
+    static int s_quantumCount = 0;
+    s_quantumCount++;
+
     {
         auto lock = m_lock.lock_exclusive();
 
@@ -628,6 +653,14 @@ void AudioSampleGenerator::OnAudioQuantumStarted(winrt::AudioGraph const& sender
         auto sampleBuffer = winrt::Buffer::CreateCopyFromMemoryBuffer(audioBuffer);
         sampleBuffer.Length(audioBuffer.Length());
 
+        if( s_quantumCount <= 5 )
+        {
+            wchar_t dbg[256];
+            swprintf_s( dbg, L"[AudioGen] quantum #%d: audioBuffer.Length=%u sampleBuffer.Length=%u started=%d\n",
+                         s_quantumCount, audioBuffer.Length(), sampleBuffer.Length(), m_started.load() ? 1 : 0 );
+            OutputDebugStringW( dbg );
+        }
+
         // Calculate expected samples per quantum (~10ms at graph sample rate)
         // AudioGraph uses 10ms quantums by default
         uint32_t expectedSamplesPerQuantum = (m_graphSampleRate / 100) * m_graphChannels;
@@ -636,7 +669,7 @@ void AudioSampleGenerator::OnAudioQuantumStarted(winrt::AudioGraph const& sender
         // Apply mono mixing to microphone audio if enabled
         // This converts stereo mic input (with same signal on both channels) to true mono
         // by averaging the channels and writing the result to both channels
-        if (m_micMonoMix && m_captureMicrophone && numMicSamples > 0 && m_graphChannels >= 2)
+        if (m_mixMicrophoneMono && m_captureMicrophone && numMicSamples > 0 && m_graphChannels >= 2)
         {
             float* micData = reinterpret_cast<float*>(sampleBuffer.data());
             uint32_t numFrames = numMicSamples / m_graphChannels;
@@ -656,6 +689,12 @@ void AudioSampleGenerator::OnAudioQuantumStarted(winrt::AudioGraph const& sender
                 }
             }
         }
+        // Apply noise suppression to microphone audio before mixing with loopback
+        if (m_noiseSuppressor && m_captureMicrophone && numMicSamples > 0)
+        {
+            float* micData = reinterpret_cast<float*>(sampleBuffer.data());
+            m_noiseSuppressor->Process(micData, numMicSamples, m_graphChannels);
+        }
 
         // Drain loopback samples regardless of whether we have mic audio
         if (m_loopbackCapture)
@@ -733,13 +772,25 @@ void AudioSampleGenerator::OnAudioQuantumStarted(winrt::AudioGraph const& sender
 
         if (sampleBuffer.Length() > 0)
         {
-            auto sample = winrt::MediaStreamSample::CreateFromBuffer(sampleBuffer, timestamp.value());
+            // Rebase audio timestamps to the video's SystemRelativeTime domain.
+            // AudioGraph RelativeTime starts near 0 (or a few hundred ms after
+            // warmup draining), while video uses absolute SRT (~hours since boot).
+            // Without rebasing, the transcoder sees audio far behind video and
+            // starves video while trying to fill the gap with audio.
+            if (!m_hasTimestampOffset && timestamp.has_value())
+            {
+                m_timestampOffset = m_videoStartTimestamp - timestamp.value().count();
+                m_hasTimestampOffset = true;
+            }
+            auto adjustedTs = winrt::TimeSpan{ timestamp.value().count() + m_timestampOffset };
+
+            auto sample = winrt::MediaStreamSample::CreateFromBuffer(sampleBuffer, adjustedTs);
             m_samples.push_back(sample);
 
             const uint32_t sampleCount = sampleBuffer.Length() / sizeof(float);
             const uint32_t frames = (m_graphChannels > 0) ? (sampleCount / m_graphChannels) : 0;
             const int64_t durationTicks = (m_graphSampleRate > 0) ? (static_cast<int64_t>(frames) * 10000000LL / m_graphSampleRate) : 0;
-            m_lastSampleTimestamp = timestamp.value();
+            m_lastSampleTimestamp = adjustedTs;
             m_lastSampleDuration = winrt::TimeSpan{ durationTicks };
             m_hasLastSampleTimestamp = true;
         }

src/modules/ZoomIt/ZoomIt/AudioSampleGenerator.h

@@ -1,18 +1,23 @@
 #pragma once
 
 #include "LoopbackCapture.h"
+#include "NoiseSuppressor.h"
+
+#include <deque>
+#include <optional>
+#include <memory>
 
 class AudioSampleGenerator
 {
 public:
-    AudioSampleGenerator(bool captureMicrophone = true, bool captureSystemAudio = true, bool micMonoMix = false);
+    AudioSampleGenerator(bool captureMicrophone = true, bool captureSystemAudio = true, bool mixMicrophoneMono = false, bool useNoiseCancellation = false);
     ~AudioSampleGenerator();
 
     winrt::Windows::Foundation::IAsyncAction InitializeAsync();
     winrt::Windows::Media::MediaProperties::AudioEncodingProperties GetEncodingProperties();
 
     std::optional<winrt::Windows::Media::Core::MediaStreamSample> TryGetNextSample();
-    void Start();
+    void Start(int64_t videoStartTimestamp = 0);
     void Stop();
 
 private:
@@ -70,5 +75,14 @@ private:
     std::atomic<bool> m_started = false;
     bool m_captureMicrophone = true;
     bool m_captureSystemAudio = true;
-    bool m_micMonoMix = false;
-};
+    bool m_mixMicrophoneMono = false;
+    bool m_useNoiseCancellation = false;
+    std::unique_ptr<NoiseSuppressor> m_noiseSuppressor;
+
+    // Timestamp rebasing: audio RelativeTime → video SystemRelativeTime domain.
+    // Without this, the transcoder sees audio timestamps (~350ms) far below video
+    // timestamps (~111 billion ticks) and starves video while trying to fill the gap.
+    int64_t m_videoStartTimestamp = 0;
+    int64_t m_timestampOffset = 0;
+    bool m_hasTimestampOffset = false;
+};

src/modules/ZoomIt/ZoomIt/BackgroundBlur.cpp

@@ -0,0 +1,859 @@
+//==============================================================================
+//
+// BackgroundBlur.cpp
+//
+// Windows ML-based person segmentation and background blur for the
+// webcam overlay.  Uses the built-in Windows.AI.MachineLearning API
+// to load an ONNX segmentation model (e.g. MediaPipe SelfieSegmentation)
+// and produce a per-pixel person mask, then blurs or replaces the
+// background using an iterated box blur or a user-chosen image.
+//
+// Copyright (C) Mark Russinovich
+// Sysinternals - www.sysinternals.com
+//
+//==============================================================================
+#include "pch.h"
+#include "BackgroundBlur.h"
+#include <algorithm>
+#include <cstring>
+#include <wincodec.h>
+#include <wil/com.h>
+
+namespace winml = winrt::Windows::AI::MachineLearning;
+namespace wf    = winrt::Windows::Foundation::Collections;
+
+// Defined in Zoomit.cpp; compiles to nothing in Release builds.
+void OutputDebug(const TCHAR* format, ...);
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::Initialize
+//
+// Loads the ONNX segmentation model via Windows ML and inspects its
+// input/output tensor shapes to auto-configure preprocessing.
+//----------------------------------------------------------------------------
+bool BackgroundBlur::Initialize( const wchar_t* modelPath )
+{
+    try
+    {
+        // Load the model from file.
+        m_model = winml::LearningModel::LoadFromFilePath( modelPath );
+
+        // Try GPU (DirectML) first for faster inference; fall back to CPU
+        // if no suitable GPU is available.
+        try
+        {
+            winml::LearningModelDevice gpuDevice( winml::LearningModelDeviceKind::DirectXHighPerformance );
+            m_session = winml::LearningModelSession( m_model, gpuDevice );
+            m_usingGpu = true;
+            OutputDebug( L"[BackgroundBlur] Using DirectML (GPU) for inference\n" );
+        }
+        catch( ... )
+        {
+            winml::LearningModelDevice cpuDevice( winml::LearningModelDeviceKind::Cpu );
+            m_session = winml::LearningModelSession( m_model, cpuDevice );
+            m_usingGpu = false;
+            OutputDebug( L"[BackgroundBlur] GPU unavailable, falling back to CPU\n" );
+        }
+        m_binding = winml::LearningModelBinding( m_session );
+
+        // Get input feature descriptor.
+        auto inputFeatures = m_model.InputFeatures();
+        if( inputFeatures.Size() == 0 )
+        {
+            OutputDebug( L"[BackgroundBlur] Model has no input features\n" );
+            return false;
+        }
+        auto inputDesc = inputFeatures.GetAt( 0 );
+        m_inputName = inputDesc.Name();
+
+        // Inspect input tensor shape.
+        auto tensorDesc = inputDesc.as<winml::ITensorFeatureDescriptor>();
+        auto shape = tensorDesc.Shape();
+        if( shape.Size() == 4 )
+        {
+            if( shape.GetAt( 1 ) == 3 || shape.GetAt( 1 ) == 1 )
+            {
+                // NCHW layout.
+                m_inputIsNchw = true;
+                m_modelInputChannels = shape.GetAt( 1 );
+                m_modelInputHeight = shape.GetAt( 2 ) > 0 ? shape.GetAt( 2 ) : 256;
+                m_modelInputWidth  = shape.GetAt( 3 ) > 0 ? shape.GetAt( 3 ) : 256;
+            }
+            else
+            {
+                // NHWC layout.
+                m_inputIsNchw = false;
+                m_modelInputHeight   = shape.GetAt( 1 ) > 0 ? shape.GetAt( 1 ) : 256;
+                m_modelInputWidth    = shape.GetAt( 2 ) > 0 ? shape.GetAt( 2 ) : 256;
+                m_modelInputChannels = shape.GetAt( 3 );
+            }
+        }
+
+        // Get output feature name.
+        auto outputFeatures = m_model.OutputFeatures();
+        if( outputFeatures.Size() == 0 )
+        {
+            OutputDebug( L"[BackgroundBlur] Model has no output features\n" );
+            return false;
+        }
+        m_outputName = outputFeatures.GetAt( 0 ).Name();
+
+        OutputDebug( L"[BackgroundBlur] Model loaded: input=%s %lldx%lld (ch=%lld, %s)\n",
+                     m_inputName.c_str(), m_modelInputWidth, m_modelInputHeight,
+                     m_modelInputChannels, m_inputIsNchw ? L"NCHW" : L"NHWC" );
+
+        // Pre-allocate input tensor buffer.
+        m_inputTensor.resize( static_cast<size_t>( m_modelInputChannels * m_modelInputHeight * m_modelInputWidth ) );
+
+        return true;
+    }
+    catch( winrt::hresult_error const& ex )
+    {
+        OutputDebug( L"[BackgroundBlur] Initialize failed: %s (0x%08X)\n", ex.message().c_str(), ex.code().value );
+        m_session = nullptr;
+        m_model = nullptr;
+        return false;
+    }
+}
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::RunSegmentation
+//
+// Resizes the BGRA frame to the model's expected input size, converts
+// to float RGB, runs inference via Windows ML, and produces a float mask
+// in m_mask where 1.0 = person, 0.0 = background.
+//----------------------------------------------------------------------------
+bool BackgroundBlur::RunSegmentation( const uint8_t* bgraPixels, uint32_t width, uint32_t height,
+                                      bool modelResOnly )
+{
+    const int64_t mW = m_modelInputWidth;
+    const int64_t mH = m_modelInputHeight;
+    const int64_t mC = m_modelInputChannels;
+
+    // Resize BGRA → model-sized float RGB using nearest-neighbor.
+    for( int64_t y = 0; y < mH; y++ )
+    {
+        uint32_t srcY = static_cast<uint32_t>( y * height / mH );
+        for( int64_t x = 0; x < mW; x++ )
+        {
+            uint32_t srcX = static_cast<uint32_t>( x * width / mW );
+            const uint8_t* px = bgraPixels + ( static_cast<size_t>( srcY ) * width + srcX ) * 4;
+            float b = px[0] / 255.0f;
+            float g = px[1] / 255.0f;
+            float r = px[2] / 255.0f;
+
+            if( m_inputIsNchw )
+            {
+                m_inputTensor[static_cast<size_t>(0ll * mH * mW + y * mW + x)] = r;
+                if( mC > 1 ) m_inputTensor[static_cast<size_t>(1ll * mH * mW + y * mW + x)] = g;
+                if( mC > 2 ) m_inputTensor[static_cast<size_t>(2ll * mH * mW + y * mW + x)] = b;
+            }
+            else
+            {
+                size_t idx = static_cast<size_t>( (y * mW + x) * mC );
+                m_inputTensor[idx + 0] = r;
+                if( mC > 1 ) m_inputTensor[idx + 1] = g;
+                if( mC > 2 ) m_inputTensor[idx + 2] = b;
+            }
+        }
+    }
+
+    try
+    {
+        // Create the input tensor shape.
+        std::vector<int64_t> inputShape;
+        if( m_inputIsNchw )
+            inputShape = { 1, mC, mH, mW };
+        else
+            inputShape = { 1, mH, mW, mC };
+
+        // Create a TensorFloat from our data.
+        auto inputTensor = winml::TensorFloat::CreateFromArray(
+            inputShape, winrt::array_view<const float>( m_inputTensor.data(),
+                                                         m_inputTensor.data() + m_inputTensor.size() ) );
+
+        // Bind input and evaluate.
+        m_binding.Clear();
+        m_binding.Bind( m_inputName, inputTensor );
+
+        auto result = m_session.Evaluate( m_binding, L"" );
+
+        // Extract output tensor — bulk-copy to a raw float array so we
+        // avoid per-element WinRT/COM dispatch in the hot loop.
+        auto outputTensor = result.Outputs().Lookup( m_outputName ).as<winml::TensorFloat>();
+        auto outputShape = outputTensor.Shape();
+        auto outputView = outputTensor.GetAsVectorView();
+        const uint32_t outputSize = outputView.Size();
+        m_outputBuf.resize( outputSize );
+        outputView.GetMany( 0, m_outputBuf );
+        const float* outData = m_outputBuf.data();
+
+        // Determine output mask dimensions.
+        int64_t outH = mH, outW = mW;
+        int64_t numClasses = 1;
+        if( outputShape.Size() == 4 )
+        {
+            if( outputShape.GetAt( 1 ) <= 2 && outputShape.GetAt( 2 ) > 2 )
+            {
+                // [1, classes, H, W]
+                numClasses = outputShape.GetAt( 1 );
+                outH = outputShape.GetAt( 2 );
+                outW = outputShape.GetAt( 3 );
+            }
+            else
+            {
+                // [1, H, W, classes]
+                outH = outputShape.GetAt( 1 );
+                outW = outputShape.GetAt( 2 );
+                numClasses = outputShape.GetAt( 3 );
+            }
+        }
+        else if( outputShape.Size() == 3 )
+        {
+            outH = outputShape.GetAt( 1 );
+            outW = outputShape.GetAt( 2 );
+        }
+
+        // Store actual output dimensions for GetModelMaskWidth/Height.
+        m_modelOutputWidth = outW;
+        m_modelOutputHeight = outH;
+
+        // Build model-resolution mask first, apply sigmoid sharpening
+        // at model resolution (e.g. 256×256 = 65K pixels), then upscale
+        // to frame resolution.
+        const size_t modelPixels = static_cast<size_t>( outH * outW );
+        m_erodeBuf.resize( modelPixels );
+
+        // Extract person scores at model resolution from the raw array.
+        // Apply a hard threshold to produce a binary mask.  This is much
+        // faster than a sigmoid (no expf) and eliminates the partial-blur
+        // halo that was bleeding onto body/head edges.
+        for( int64_t y = 0; y < outH; y++ )
+        {
+            for( int64_t x = 0; x < outW; x++ )
+            {
+                float personScore;
+                if( numClasses == 1 )
+                {
+                    personScore = outData[y * outW + x];
+                }
+                else
+                {
+                    float bg = outData[0 * outH * outW + y * outW + x];
+                    float fg = outData[1 * outH * outW + y * outW + x];
+                    personScore = ( fg > bg ) ? 1.0f : 0.0f;
+                }
+
+                m_erodeBuf[static_cast<size_t>( y * outW + x )] = ( personScore > 0.5f ) ? 1.0f : 0.0f;
+            }
+        }
+
+        // ── GPU path: model-resolution post-processing only ────────
+        // When modelResOnly is true, apply feathering and temporal
+        // smoothing at model resolution (e.g. 256×256 = 65K pixels)
+        // and return early.  The GPU's hardware bilinear sampler will
+        // handle upscaling to frame resolution for free.
+        if( modelResOnly )
+        {
+            // Small box blur on m_erodeBuf for edge feathering.
+            // Radius 1 at 256×256 provides similar smoothing to
+            // radius 3 at 960×540 after bilinear upscale.
+            const int modelBlurRadius = 1;
+            const int modelDiam = modelBlurRadius * 2 + 1;
+            m_maskBlurBuf.resize( modelPixels );
+
+            // Horizontal pass.
+            for( int64_t y = 0; y < outH; y++ )
+            {
+                const float* srcRow = m_erodeBuf.data() + y * outW;
+                float* dstRow = m_maskBlurBuf.data() + y * outW;
+                float sum = 0.0f;
+                for( int i = -modelBlurRadius; i <= modelBlurRadius; i++ )
+                    sum += srcRow[(std::max)( static_cast<int64_t>(0), (std::min)( outW - 1, static_cast<int64_t>( i ) ) )];
+                for( int64_t x = 0; x < outW; x++ )
+                {
+                    dstRow[x] = sum / modelDiam;
+                    int64_t remX = (std::max)( static_cast<int64_t>(0), x - modelBlurRadius );
+                    int64_t addX = (std::min)( outW - 1, x + modelBlurRadius + 1 );
+                    sum += srcRow[addX] - srcRow[remX];
+                }
+            }
+
+            // Vertical pass.
+            for( int64_t x = 0; x < outW; x++ )
+            {
+                float sum = 0.0f;
+                for( int i = -modelBlurRadius; i <= modelBlurRadius; i++ )
+                {
+                    int64_t iy = (std::max)( static_cast<int64_t>(0), (std::min)( outH - 1, static_cast<int64_t>( i ) ) );
+                    sum += m_maskBlurBuf[static_cast<size_t>( iy * outW + x )];
+                }
+                for( int64_t y = 0; y < outH; y++ )
+                {
+                    m_erodeBuf[static_cast<size_t>( y * outW + x )] = sum / modelDiam;
+                    int64_t remY = (std::max)( static_cast<int64_t>(0), y - modelBlurRadius );
+                    int64_t addY = (std::min)( outH - 1, y + modelBlurRadius + 1 );
+                    sum += m_maskBlurBuf[static_cast<size_t>( addY * outW + x )] -
+                           m_maskBlurBuf[static_cast<size_t>( remY * outW + x )];
+                }
+            }
+
+            // Temporal smoothing at model resolution.
+            if( m_prevModelMask.size() == modelPixels )
+            {
+                constexpr float alpha = 0.6f;
+                constexpr float beta  = 0.4f;
+                for( size_t i = 0; i < modelPixels; i++ )
+                    m_erodeBuf[i] = alpha * m_erodeBuf[i] + beta * m_prevModelMask[i];
+            }
+            m_prevModelMask = m_erodeBuf;
+
+            return true;
+        }
+
+        // Upscale processed mask to frame dimensions via bilinear interpolation
+        // to produce smooth edges instead of staircase artifacts.
+        const size_t maskPixels = static_cast<size_t>( width ) * height;
+        m_mask.resize( maskPixels );
+        for( uint32_t y = 0; y < height; y++ )
+        {
+            float srcYf = ( y + 0.5f ) * outH / static_cast<float>( height ) - 0.5f;
+            srcYf = (std::max)( 0.0f, (std::min)( srcYf, static_cast<float>( outH - 1 ) ) );
+            int64_t y0 = static_cast<int64_t>( srcYf );
+            int64_t y1 = (std::min)( y0 + 1, outH - 1 );
+            float fy = srcYf - y0;
+
+            for( uint32_t x = 0; x < width; x++ )
+            {
+                float srcXf = ( x + 0.5f ) * outW / static_cast<float>( width ) - 0.5f;
+                srcXf = (std::max)( 0.0f, (std::min)( srcXf, static_cast<float>( outW - 1 ) ) );
+                int64_t x0 = static_cast<int64_t>( srcXf );
+                int64_t x1 = (std::min)( x0 + 1, outW - 1 );
+                float fx = srcXf - x0;
+
+                float v00 = m_erodeBuf[static_cast<size_t>(y0 * outW + x0)];
+                float v01 = m_erodeBuf[static_cast<size_t>(y0 * outW + x1)];
+                float v10 = m_erodeBuf[static_cast<size_t>(y1 * outW + x0)];
+                float v11 = m_erodeBuf[static_cast<size_t>(y1 * outW + x1)];
+
+                m_mask[static_cast<size_t>( y ) * width + x] =
+                    v00 * ( 1.0f - fx ) * ( 1.0f - fy ) +
+                    v01 * fx * ( 1.0f - fy ) +
+                    v10 * ( 1.0f - fx ) * fy +
+                    v11 * fx * fy;
+            }
+        }
+
+        // Apply a small box blur to the upscaled mask to feather edges.
+        const int maskBlurRadius = 3;
+        const int maskDiam = maskBlurRadius * 2 + 1;
+        m_maskBlurBuf.resize( maskPixels );
+
+        // Horizontal pass.
+        for( uint32_t y = 0; y < height; y++ )
+        {
+            const float* srcRow = m_mask.data() + static_cast<size_t>( y ) * width;
+            float* dstRow = m_maskBlurBuf.data() + static_cast<size_t>( y ) * width;
+            float sum = 0.0f;
+
+            for( int i = -maskBlurRadius; i <= maskBlurRadius; i++ )
+                sum += srcRow[(std::max)( 0, (std::min)( static_cast<int>( width ) - 1, i ) )];
+
+            for( uint32_t x = 0; x < width; x++ )
+            {
+                dstRow[x] = sum / maskDiam;
+                int remX = (std::max)( 0, static_cast<int>( x ) - maskBlurRadius );
+                int addX = (std::min)( static_cast<int>( width ) - 1, static_cast<int>( x ) + maskBlurRadius + 1 );
+                sum += srcRow[addX] - srcRow[remX];
+            }
+        }
+
+        // Vertical pass.
+        for( uint32_t x = 0; x < width; x++ )
+        {
+            float sum = 0.0f;
+
+            for( int i = -maskBlurRadius; i <= maskBlurRadius; i++ )
+            {
+                int iy = (std::max)( 0, (std::min)( static_cast<int>( height ) - 1, i ) );
+                sum += m_maskBlurBuf[static_cast<size_t>( iy ) * width + x];
+            }
+
+            for( uint32_t y = 0; y < height; y++ )
+            {
+                m_mask[static_cast<size_t>( y ) * width + x] = sum / maskDiam;
+                int remY = (std::max)( 0, static_cast<int>( y ) - maskBlurRadius );
+                int addY = (std::min)( static_cast<int>( height ) - 1, static_cast<int>( y ) + maskBlurRadius + 1 );
+                sum += m_maskBlurBuf[static_cast<size_t>( addY ) * width + x] -
+                       m_maskBlurBuf[static_cast<size_t>( remY ) * width + x];
+            }
+        }
+
+        // Temporal smoothing: blend the current mask with the previous
+        // frame's mask to stabilize edges and reduce flicker.  A weight
+        // of 0.6 current + 0.4 previous keeps edges responsive while
+        // dampening the frame-to-frame jitter around fine details like
+        // ears, hair, and fingers.
+        {
+            const size_t maskPixelsInner = static_cast<size_t>( width ) * height;
+            if( m_prevMask.size() == maskPixelsInner )
+            {
+                constexpr float alpha = 0.6f;  // current frame weight
+                constexpr float beta  = 0.4f;  // previous frame weight
+                for( size_t i = 0; i < maskPixelsInner; i++ )
+                {
+                    m_mask[i] = alpha * m_mask[i] + beta * m_prevMask[i];
+                }
+            }
+            m_prevMask = m_mask;
+        }
+
+        return true;
+    }
+    catch( winrt::hresult_error const& ex )
+    {
+        OutputDebug( L"[BackgroundBlur] Evaluate failed: %s (0x%08X)\n", ex.message().c_str(), ex.code().value );
+        return false;
+    }
+}
+
+//----------------------------------------------------------------------------
+// HorizontalBoxBlur / VerticalBoxBlur
+//
+// Separable box blur passes used to build an approximate Gaussian.
+//----------------------------------------------------------------------------
+static void HorizontalBoxBlur(
+    const uint8_t* src, uint8_t* dst, uint32_t width, uint32_t height, int radius )
+{
+    const int diameter = radius * 2 + 1;
+    for( uint32_t y = 0; y < height; y++ )
+    {
+        int rSum = 0, gSum = 0, bSum = 0;
+        const uint8_t* row = src + static_cast<size_t>( y ) * width * 4;
+
+        // Initialize window with clamped left edge.
+        for( int i = -radius; i <= radius; i++ )
+        {
+            int ix = (std::max)( 0, (std::min)( static_cast<int>( width ) - 1, i ) );
+            const uint8_t* px = row + ix * 4;
+            bSum += px[0];
+            gSum += px[1];
+            rSum += px[2];
+        }
+
+        uint8_t* dstRow = dst + static_cast<size_t>( y ) * width * 4;
+        for( uint32_t x = 0; x < width; x++ )
+        {
+            dstRow[x * 4 + 0] = static_cast<uint8_t>( bSum / diameter );
+            dstRow[x * 4 + 1] = static_cast<uint8_t>( gSum / diameter );
+            dstRow[x * 4 + 2] = static_cast<uint8_t>( rSum / diameter );
+            dstRow[x * 4 + 3] = 0xFF;
+
+            // Slide window: add right, remove left.
+            int removeX = (std::max)( 0, static_cast<int>( x ) - radius );
+            int addX = (std::min)( static_cast<int>( width ) - 1, static_cast<int>( x ) + radius + 1 );
+            const uint8_t* remPx = row + removeX * 4;
+            const uint8_t* addPx = row + addX * 4;
+            bSum += addPx[0] - remPx[0];
+            gSum += addPx[1] - remPx[1];
+            rSum += addPx[2] - remPx[2];
+        }
+    }
+}
+
+static void VerticalBoxBlur(
+    const uint8_t* src, uint8_t* dst, uint32_t width, uint32_t height, int radius )
+{
+    const int diameter = radius * 2 + 1;
+    for( uint32_t x = 0; x < width; x++ )
+    {
+        int rSum = 0, gSum = 0, bSum = 0;
+
+        // Initialize window with clamped top edge.
+        for( int i = -radius; i <= radius; i++ )
+        {
+            int iy = (std::max)( 0, (std::min)( static_cast<int>( height ) - 1, i ) );
+            const uint8_t* px = src + ( static_cast<size_t>( iy ) * width + x ) * 4;
+            bSum += px[0];
+            gSum += px[1];
+            rSum += px[2];
+        }
+
+        for( uint32_t y = 0; y < height; y++ )
+        {
+            uint8_t* dstPx = dst + ( static_cast<size_t>( y ) * width + x ) * 4;
+            dstPx[0] = static_cast<uint8_t>( bSum / diameter );
+            dstPx[1] = static_cast<uint8_t>( gSum / diameter );
+            dstPx[2] = static_cast<uint8_t>( rSum / diameter );
+            dstPx[3] = 0xFF;
+
+            int removeY = (std::max)( 0, static_cast<int>( y ) - radius );
+            int addY = (std::min)( static_cast<int>( height ) - 1, static_cast<int>( y ) + radius + 1 );
+            const uint8_t* remPx = src + ( static_cast<size_t>( removeY ) * width + x ) * 4;
+            const uint8_t* addPx = src + ( static_cast<size_t>( addY ) * width + x ) * 4;
+            bSum += addPx[0] - remPx[0];
+            gSum += addPx[1] - remPx[1];
+            rSum += addPx[2] - remPx[2];
+        }
+    }
+}
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::ApplyBlurWithMask
+//
+// Downscales the frame to a small working size, blurs there, then
+// performs a single full-resolution pass that blends the original
+// pixels with the upscaled blurred pixels according to the mask.
+//----------------------------------------------------------------------------
+void BackgroundBlur::ApplyBlurWithMask( uint8_t* bgraPixels, uint32_t width, uint32_t height, int blurRadius )
+{
+    const size_t frameBytes = static_cast<size_t>( width ) * height * 4;
+    m_blurredFrame.resize( frameBytes );
+    m_tempFrame.resize( frameBytes );
+
+    // The input is already capped at 960×540 by WebcamCapture, so blur
+    // directly — no need for a secondary downscale.
+    int effectiveRadius = (std::max)( 3, blurRadius );
+
+    // 2 iterations of box blur → approximate Gaussian.
+    HorizontalBoxBlur( bgraPixels, m_blurredFrame.data(), width, height, effectiveRadius );
+    VerticalBoxBlur( m_blurredFrame.data(), m_tempFrame.data(), width, height, effectiveRadius );
+    HorizontalBoxBlur( m_tempFrame.data(), m_blurredFrame.data(), width, height, effectiveRadius );
+    VerticalBoxBlur( m_blurredFrame.data(), m_tempFrame.data(), width, height, effectiveRadius );
+
+    // Blend pass with alpha support for smooth mask edges.
+    const uint8_t* blurData = m_tempFrame.data();
+    for( uint32_t y = 0; y < height; y++ )
+    {
+        uint8_t* dstRow = bgraPixels + static_cast<size_t>( y ) * width * 4;
+        const uint8_t* blurRow = blurData + static_cast<size_t>( y ) * width * 4;
+        const float* maskRow = m_mask.data() + static_cast<size_t>( y ) * width;
+
+        for( uint32_t x = 0; x < width; x++ )
+        {
+            float maskVal = maskRow[x];
+
+            // Fast path: fully person → keep original pixel untouched.
+            if( maskVal >= 1.0f )
+                continue;
+
+            uint8_t* dp = dstRow + x * 4;
+            const uint8_t* bp = blurRow + x * 4;
+
+            // Fast path: fully background → copy blurred pixel.
+            if( maskVal <= 0.0f )
+            {
+                *reinterpret_cast<uint32_t*>( dp ) = *reinterpret_cast<const uint32_t*>( bp );
+                continue;
+            }
+
+            // Edge pixel → alpha blend original and blurred.
+            float inv = 1.0f - maskVal;
+            dp[0] = static_cast<uint8_t>( dp[0] * maskVal + bp[0] * inv + 0.5f );
+            dp[1] = static_cast<uint8_t>( dp[1] * maskVal + bp[1] * inv + 0.5f );
+            dp[2] = static_cast<uint8_t>( dp[2] * maskVal + bp[2] * inv + 0.5f );
+        }
+    }
+}
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::SetBackgroundImage
+//
+// Loads an image file via WIC and stores it as a BGRA pixel buffer.
+//----------------------------------------------------------------------------
+bool BackgroundBlur::SetBackgroundImage( const wchar_t* imagePath )
+{
+    m_bgImage.clear();
+    m_bgImageWidth = 0;
+    m_bgImageHeight = 0;
+    m_scaledBgImage.clear();
+    m_scaledBgW = 0;
+    m_scaledBgH = 0;
+
+    if( !imagePath || !*imagePath )
+        return false;
+
+    auto factory = wil::CoCreateInstance<IWICImagingFactory>( CLSID_WICImagingFactory );
+    if( !factory )
+        return false;
+
+    wil::com_ptr<IWICBitmapDecoder> decoder;
+    HRESULT hr = factory->CreateDecoderFromFilename(
+        imagePath, nullptr, GENERIC_READ, WICDecodeMetadataCacheOnDemand, &decoder );
+    if( FAILED( hr ) )
+    {
+        OutputDebug( L"[BackgroundBlur] Failed to decode image: %s (hr=0x%08X)\n", imagePath, hr );
+        return false;
+    }
+
+    wil::com_ptr<IWICBitmapFrameDecode> frame;
+    hr = decoder->GetFrame( 0, &frame );
+    if( FAILED( hr ) )
+        return false;
+
+    // Convert to BGRA 32bpp.
+    wil::com_ptr<IWICFormatConverter> converter;
+    hr = factory->CreateFormatConverter( &converter );
+    if( FAILED( hr ) )
+        return false;
+
+    hr = converter->Initialize(
+        frame.get(), GUID_WICPixelFormat32bppBGRA,
+        WICBitmapDitherTypeNone, nullptr, 0.0, WICBitmapPaletteTypeCustom );
+    if( FAILED( hr ) )
+        return false;
+
+    UINT w = 0, h = 0;
+    converter->GetSize( &w, &h );
+    if( w == 0 || h == 0 )
+        return false;
+
+    m_bgImage.resize( static_cast<size_t>( w ) * h * 4 );
+    hr = converter->CopyPixels( nullptr, w * 4, static_cast<UINT>( m_bgImage.size() ), m_bgImage.data() );
+    if( FAILED( hr ) )
+    {
+        m_bgImage.clear();
+        return false;
+    }
+
+    m_bgImageWidth = w;
+    m_bgImageHeight = h;
+
+    OutputDebug( L"[BackgroundBlur] Background image loaded: %ux%u from %s\n", w, h, imagePath );
+    return true;
+}
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::EnsureScaledBgImage
+//
+// Scales the loaded background image to the specified dimensions using
+// nearest-neighbor.  The result is cached and only recomputed when the
+// target dimensions change.  The image is center-cropped to preserve
+// aspect ratio (like "cover" scaling).
+//----------------------------------------------------------------------------
+void BackgroundBlur::EnsureScaledBgImage( uint32_t width, uint32_t height )
+{
+    if( m_scaledBgW == width && m_scaledBgH == height && !m_scaledBgImage.empty() )
+        return;
+
+    m_scaledBgImage.resize( static_cast<size_t>( width ) * height * 4 );
+    m_scaledBgW = width;
+    m_scaledBgH = height;
+
+    // Compute center-crop of the source image to match the target aspect ratio.
+    double targetAspect = static_cast<double>( width ) / height;
+    double srcAspect = static_cast<double>( m_bgImageWidth ) / m_bgImageHeight;
+
+    uint32_t cropW, cropH, cropX, cropY;
+    if( srcAspect > targetAspect )
+    {
+        // Source is wider — crop horizontally.
+        cropH = m_bgImageHeight;
+        cropW = static_cast<uint32_t>( m_bgImageHeight * targetAspect + 0.5 );
+        cropX = ( m_bgImageWidth - cropW ) / 2;
+        cropY = 0;
+    }
+    else
+    {
+        // Source is taller — crop vertically.
+        cropW = m_bgImageWidth;
+        cropH = static_cast<uint32_t>( m_bgImageWidth / targetAspect + 0.5 );
+        cropX = 0;
+        cropY = ( m_bgImageHeight - cropH ) / 2;
+    }
+
+    for( uint32_t y = 0; y < height; y++ )
+    {
+        uint32_t srcY = cropY + y * cropH / height;
+        for( uint32_t x = 0; x < width; x++ )
+        {
+            uint32_t srcX = cropX + x * cropW / width;
+            size_t srcIdx = ( static_cast<size_t>( srcY ) * m_bgImageWidth + srcX ) * 4;
+            size_t dstIdx = ( static_cast<size_t>( y ) * width + x ) * 4;
+            m_scaledBgImage[dstIdx + 0] = m_bgImage[srcIdx + 0];
+            m_scaledBgImage[dstIdx + 1] = m_bgImage[srcIdx + 1];
+            m_scaledBgImage[dstIdx + 2] = m_bgImage[srcIdx + 2];
+            m_scaledBgImage[dstIdx + 3] = 0xFF;
+        }
+    }
+}
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::ApplyImageWithMask
+//
+// Replaces background pixels with the loaded background image using the
+// segmentation mask.  Person pixels are preserved, background pixels come
+// from the scaled image.
+//----------------------------------------------------------------------------
+void BackgroundBlur::ApplyImageWithMask( uint8_t* bgraPixels, uint32_t width, uint32_t height )
+{
+    EnsureScaledBgImage( width, height );
+
+    const uint8_t* bgData = m_scaledBgImage.data();
+
+    for( uint32_t y = 0; y < height; y++ )
+    {
+        uint8_t* dstRow = bgraPixels + static_cast<size_t>( y ) * width * 4;
+        const uint8_t* bgRow = bgData + static_cast<size_t>( y ) * width * 4;
+        const float* maskRow = m_mask.data() + static_cast<size_t>( y ) * width;
+
+        for( uint32_t x = 0; x < width; x++ )
+        {
+            float maskVal = maskRow[x];
+
+            // Fully person → keep original pixel.
+            if( maskVal >= 1.0f )
+                continue;
+
+            uint8_t* dp = dstRow + x * 4;
+            const uint8_t* bp = bgRow + x * 4;
+
+            // Fully background → copy background image pixel.
+            if( maskVal <= 0.0f )
+            {
+                *reinterpret_cast<uint32_t*>( dp ) = *reinterpret_cast<const uint32_t*>( bp );
+                continue;
+            }
+
+            // Edge pixel → alpha blend person and background image.
+            float inv = 1.0f - maskVal;
+            dp[0] = static_cast<uint8_t>( dp[0] * maskVal + bp[0] * inv + 0.5f );
+            dp[1] = static_cast<uint8_t>( dp[1] * maskVal + bp[1] * inv + 0.5f );
+            dp[2] = static_cast<uint8_t>( dp[2] * maskVal + bp[2] * inv + 0.5f );
+        }
+    }
+}
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::ShouldRunInference
+//
+// Decides whether segmentation inference should run this frame.
+// Uses a combination of periodic fallback and motion detection:
+// motion is estimated by comparing luminance at a sparse grid of
+// sample points with the previous frame.  When the scene changes
+// quickly (fast head movement), inference runs every frame.
+//----------------------------------------------------------------------------
+bool BackgroundBlur::ShouldRunInference( const uint8_t* bgraPixels, uint32_t width, uint32_t height )
+{
+    // Always run if no cached mask or dimensions changed.
+    if( !m_hasCachedMask || m_lastMaskWidth != width || m_lastMaskHeight != height )
+        return true;
+
+    // Periodic fallback: run at least every N frames.
+    const uint32_t pixels = width * height;
+    const int inferenceInterval = ( pixels > 500000 ) ? 6 : 3;
+    if( ( m_frameCounter % inferenceInterval ) == 0 )
+        return true;
+
+    // Motion detection: sample luminance at a sparse grid and compare
+    // with the previous frame.
+    constexpr int gridSize = MOTION_GRID_SIZE;
+    constexpr int numSamples = gridSize * gridSize;
+    float curSamples[numSamples];
+
+    for( int gy = 0; gy < gridSize; gy++ )
+    {
+        uint32_t sy = ( gy * 2 + 1 ) * height / ( gridSize * 2 );
+        for( int gx = 0; gx < gridSize; gx++ )
+        {
+            uint32_t sx = ( gx * 2 + 1 ) * width / ( gridSize * 2 );
+            const uint8_t* px = bgraPixels + ( static_cast<size_t>( sy ) * width + sx ) * 4;
+            curSamples[gy * gridSize + gx] = 0.299f * px[2] + 0.587f * px[1] + 0.114f * px[0];
+        }
+    }
+
+    float motionScore = 0.0f;
+    if( m_hasPrevSamples )
+    {
+        for( int i = 0; i < numSamples; i++ )
+        {
+            float diff = curSamples[i] - m_prevSamples[i];
+            motionScore += diff > 0.0f ? diff : -diff;
+        }
+        motionScore /= numSamples;
+    }
+
+    memcpy( m_prevSamples, curSamples, sizeof( curSamples ) );
+    m_hasPrevSamples = true;
+
+    // Average per-sample luminance change > 5/255 indicates significant motion.
+    return motionScore > 5.0f;
+}
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::ApplyImageReplacement
+//
+// Main entry point for background image replacement mode.
+//----------------------------------------------------------------------------
+bool BackgroundBlur::ApplyImageReplacement( uint8_t* bgraPixels, uint32_t width, uint32_t height )
+{
+    if( !m_session || !bgraPixels || width == 0 || height == 0 )
+        return false;
+
+    if( m_bgImage.empty() )
+        return false;
+
+    if( ShouldRunInference( bgraPixels, width, height ) )
+    {
+        if( !RunSegmentation( bgraPixels, width, height ) )
+            return false;
+        m_lastMaskWidth = width;
+        m_lastMaskHeight = height;
+        m_hasCachedMask = true;
+    }
+    m_frameCounter++;
+
+    ApplyImageWithMask( bgraPixels, width, height );
+    return true;
+}
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::Apply
+//
+// Main entry point: runs segmentation and applies blur to the background.
+//----------------------------------------------------------------------------
+bool BackgroundBlur::Apply( uint8_t* bgraPixels, uint32_t width, uint32_t height, int blurRadius )
+{
+    if( !m_session || !bgraPixels || width == 0 || height == 0 )
+        return false;
+
+    if( ShouldRunInference( bgraPixels, width, height ) )
+    {
+        if( !RunSegmentation( bgraPixels, width, height ) )
+            return false;
+        m_lastMaskWidth = width;
+        m_lastMaskHeight = height;
+        m_hasCachedMask = true;
+    }
+    m_frameCounter++;
+
+    ApplyBlurWithMask( bgraPixels, width, height, blurRadius );
+    return true;
+}
+
+//----------------------------------------------------------------------------
+// BackgroundBlur::RunSegmentationOnly
+//
+// Runs the segmentation model and produces the mask, but does NOT blur
+// or modify the pixel buffer.  Used when the GPU compute shader will
+// perform the box blur instead of the CPU.
+//----------------------------------------------------------------------------
+bool BackgroundBlur::RunSegmentationOnly( const uint8_t* bgraPixels, uint32_t width, uint32_t height )
+{
+    if( !m_session || !bgraPixels || width == 0 || height == 0 )
+        return false;
+
+    if( ShouldRunInference( bgraPixels, width, height ) )
+    {
+        // Model-resolution only: skip CPU upscale+feather at frame
+        // resolution — the GPU bilinear sampler handles that.
+        if( !RunSegmentation( bgraPixels, width, height, /*modelResOnly=*/ true ) )
+            return false;
+        m_lastMaskWidth = width;
+        m_lastMaskHeight = height;
+        m_hasCachedMask = true;
+    }
+    m_frameCounter++;
+
+    return m_hasCachedMask;
+}

src/modules/ZoomIt/ZoomIt/BackgroundBlur.h

@@ -0,0 +1,160 @@
+//==============================================================================
+//
+// BackgroundBlur.h
+//
+// Performs person segmentation using Windows ML (Windows.AI.MachineLearning)
+// and applies either a Gaussian blur or a custom background image to the
+// background of a BGRA webcam frame.  The segmentation model runs on CPU
+// via the Windows ML default device, keeping the GPU free for recording.
+//
+// Copyright (C) Mark Russinovich
+// Sysinternals - www.sysinternals.com
+//
+//==============================================================================
+#pragma once
+
+#include <vector>
+#include <string>
+#include <cstdint>
+#include <winrt/Windows.AI.MachineLearning.h>
+
+// Background processing mode for the webcam overlay.
+enum class WebcamBackgroundMode : uint32_t
+{
+    None = 0,   // No background processing
+    Blur = 1,   // Gaussian blur on the background
+    Image = 2,  // Replace background with a user-chosen image
+};
+
+class BackgroundBlur
+{
+public:
+    BackgroundBlur() = default;
+    ~BackgroundBlur() = default;
+
+    // Initialize the ONNX model.  modelPath must point to a valid .onnx
+    // segmentation model file.  Returns true on success.
+    bool Initialize( const wchar_t* modelPath );
+
+    // Load a background replacement image from the given file path.
+    // The image is decoded via WIC and stored as a BGRA buffer.
+    // Returns true on success.
+    bool SetBackgroundImage( const wchar_t* imagePath );
+
+    // Returns true if a background image has been loaded.
+    bool HasBackgroundImage() const { return !m_bgImage.empty(); }
+
+    // Apply background blur to a BGRA pixel buffer in-place.
+    // width/height are the frame dimensions.  blurRadius controls
+    // the strength of the Gaussian blur (in pixels).
+    // Returns true if segmentation + blur was applied successfully.
+    bool Apply( uint8_t* bgraPixels, uint32_t width, uint32_t height, int blurRadius = 21 );
+
+    // Apply background image replacement to a BGRA pixel buffer in-place.
+    // Uses the previously loaded background image (via SetBackgroundImage).
+    // Returns true if segmentation + image replacement was applied.
+    bool ApplyImageReplacement( uint8_t* bgraPixels, uint32_t width, uint32_t height );
+
+    // Returns true if the model has been loaded successfully.
+    bool IsInitialized() const { return m_session != nullptr; }
+
+    // Access the segmentation mask after Apply()/ApplyImageReplacement().
+    // The mask has one float [0..1] per pixel at the processing resolution
+    // (1.0 = person / foreground, 0.0 = background).
+    const std::vector<float>& GetMask() const { return m_mask; }
+    uint32_t GetMaskWidth() const { return m_lastMaskWidth; }
+    uint32_t GetMaskHeight() const { return m_lastMaskHeight; }
+    bool HasCachedMask() const { return m_hasCachedMask; }
+
+    // Run segmentation only (no CPU blur or mask blend).  Use this when
+    // the blur will be performed on the GPU via a compute shader.
+    // Populates the mask (GetMask) but does NOT touch bgraPixels.
+    bool RunSegmentationOnly( const uint8_t* bgraPixels, uint32_t width, uint32_t height );
+
+    // Access the fully-blurred frame after Apply().
+    // Contains all pixels blurred (before mask-based compositing).
+    // Only valid after Apply() — NOT after ApplyImageReplacement().
+    const std::vector<uint8_t>& GetBlurredFrame() const { return m_tempFrame; }
+
+    // Access the model-resolution mask before upscaling (e.g. 256×256).
+    // Useful when the GPU handles upscaling via hardware bilinear filtering.
+    const std::vector<float>& GetModelMask() const { return m_erodeBuf; }
+    int64_t GetModelMaskWidth() const { return m_modelOutputWidth; }
+    int64_t GetModelMaskHeight() const { return m_modelOutputHeight; }
+
+private:
+    // Run the segmentation model and produce a float mask [0..1] per pixel.
+    // When modelResOnly is true, stops after model-resolution post-processing
+    // (feathering + temporal smoothing at 256×256) and skips the CPU upscale
+    // to frame resolution — the GPU bilinear sampler handles that instead.
+    bool RunSegmentation( const uint8_t* bgraPixels, uint32_t width, uint32_t height,
+                          bool modelResOnly = false );
+
+    // Apply box blur (iterated for Gaussian approximation) to bgraPixels
+    // only where the mask indicates background.
+    void ApplyBlurWithMask( uint8_t* bgraPixels, uint32_t width, uint32_t height, int blurRadius );
+
+    // Replace background pixels with the loaded background image.
+    void ApplyImageWithMask( uint8_t* bgraPixels, uint32_t width, uint32_t height );
+
+    // Scale the loaded background image to the given dimensions (cached).
+    void EnsureScaledBgImage( uint32_t width, uint32_t height );
+
+    // Decide whether inference is needed this frame (periodic + motion-adaptive).
+    bool ShouldRunInference( const uint8_t* bgraPixels, uint32_t width, uint32_t height );
+
+    // Windows ML objects.
+    winrt::Windows::AI::MachineLearning::LearningModel          m_model{ nullptr };
+    winrt::Windows::AI::MachineLearning::LearningModelSession   m_session{ nullptr };
+    winrt::Windows::AI::MachineLearning::LearningModelBinding   m_binding{ nullptr };
+    winrt::hstring                                              m_inputName;
+    winrt::hstring                                              m_outputName;
+
+    // Model metadata (detected from the loaded model).
+    int64_t                 m_modelInputWidth = 256;
+    int64_t                 m_modelInputHeight = 256;
+    int64_t                 m_modelInputChannels = 3;
+    bool                    m_inputIsNchw = true; // true = [1,C,H,W], false = [1,H,W,C]
+    bool                    m_usingGpu = false;   // true if DirectML session is active
+
+    // Actual model output dimensions (may differ from input dimensions).
+    int64_t                 m_modelOutputWidth = 256;
+    int64_t                 m_modelOutputHeight = 256;
+
+    // Reusable buffers to avoid per-frame allocations.
+    std::vector<float>      m_inputTensor;      // RGB float [1,3,H,W] or [1,H,W,3]
+    std::vector<float>      m_outputBuf;        // Raw copy of output tensor data
+    std::vector<float>      m_mask;             // Segmentation mask [width*height]
+    std::vector<float>      m_erodeBuf;         // Model-resolution mask buffer
+    std::vector<float>      m_maskBlurBuf;      // Temp buffer for mask edge smoothing
+    std::vector<uint8_t>    m_blurredFrame;     // Temporary blurred copy
+    std::vector<uint8_t>    m_tempFrame;        // Second temp buffer for blur passes
+
+    // Background image (original resolution, BGRA).
+    std::vector<uint8_t>    m_bgImage;
+    uint32_t                m_bgImageWidth = 0;
+    uint32_t                m_bgImageHeight = 0;
+
+    // Scaled background image (cached at overlay dimensions).
+    std::vector<uint8_t>    m_scaledBgImage;
+    uint32_t                m_scaledBgW = 0;
+    uint32_t                m_scaledBgH = 0;
+
+    // Frame-skipping: reuse the segmentation mask for N frames.
+    int                     m_frameCounter = 0;
+    uint32_t                m_lastMaskWidth = 0;
+    uint32_t                m_lastMaskHeight = 0;
+    bool                    m_hasCachedMask = false;
+
+    // Motion detection: luminance samples from the previous frame.
+    static constexpr int    MOTION_GRID_SIZE = 8; // 8×8 = 64 sample points
+    float                   m_prevSamples[MOTION_GRID_SIZE * MOTION_GRID_SIZE] = {};
+    bool                    m_hasPrevSamples = false;
+
+    // Temporal smoothing: previous frame's mask blended with current
+    // to stabilize edges and reduce flicker.
+    std::vector<float>      m_prevMask;
+
+    // Model-resolution previous mask for GPU path temporal smoothing.
+    std::vector<float>      m_prevModelMask;
+};

src/modules/ZoomIt/ZoomIt/BoxBlurCS.h

@@ -0,0 +1,606 @@
+#if 0
+//
+// Generated by Microsoft (R) HLSL Shader Compiler 10.1
+//
+//
+// Buffer Definitions: 
+//
+// cbuffer BlurConstants
+// {
+//
+//   uint Direction;                    // Offset:    0 Size:     4
+//   int Radius;                        // Offset:    4 Size:     4
+//   uint Width;                        // Offset:    8 Size:     4
+//   uint Height;                       // Offset:   12 Size:     4
+//
+// }
+//
+//
+// Resource Bindings:
+//
+// Name                                 Type  Format         Dim      HLSL Bind  Count
+// ------------------------------ ---------- ------- ----------- -------------- ------
+// InputTex                          texture  float4          2d             t0      1 
+// OutputTex                             UAV  float4          2d             u0      1 
+// BlurConstants                     cbuffer      NA          NA            cb0      1 
+//
+//
+//
+// Input signature:
+//
+// Name                 Index   Mask Register SysValue  Format   Used
+// -------------------- ----- ------ -------- -------- ------- ------
+// no Input
+//
+// Output signature:
+//
+// Name                 Index   Mask Register SysValue  Format   Used
+// -------------------- ----- ------ -------- -------- ------- ------
+// no Output
+cs_5_0
+dcl_globalFlags refactoringAllowed
+dcl_constantbuffer CB0[1], immediateIndexed
+dcl_resource_texture2d (float,float,float,float) t0
+dcl_uav_typed_texture2d (float,float,float,float) u0
+dcl_input vThreadGroupID.xy
+dcl_input vThreadIDInGroup.x
+dcl_temps 4
+dcl_tgsm_structured g0, 16, 320
+dcl_thread_group 256, 1, 1
+imin r0.x, cb0[0].y, l(32)
+ishl r0.y, r0.x, l(1)
+iadd r0.z, r0.y, l(256)
+if_z cb0[0].x
+  uge r0.w, vThreadGroupID.y, cb0[0].w
+  if_nz r0.w
+    ret 
+  endif 
+  ishl r0.w, vThreadGroupID.x, l(8)
+  iadd r1.x, cb0[0].z, l(-1)
+  mov r2.y, vThreadGroupID.y
+  mov r2.zw, l(0,0,0,0)
+  mov r1.y, vThreadIDInGroup.x
+  loop 
+    ige r1.z, r1.y, r0.z
+    breakc_nz r1.z
+    iadd r1.z, r0.w, r1.y
+    iadd r1.z, -r0.x, r1.z
+    imax r1.z, r1.z, l(0)
+    imin r2.x, r1.x, r1.z
+    ld_indexable(texture2d)(float,float,float,float) r3.xyzw, r2.xyzw, t0.xyzw
+    store_structured g0.xyzw, r1.y, l(0), r3.xyzw
+    iadd r1.y, r1.y, l(256)
+  endloop 
+  sync_g_t
+  imad r1.x, vThreadGroupID.x, l(256), vThreadIDInGroup.x
+  uge r0.w, r1.x, cb0[0].z
+  if_nz r0.w
+    ret 
+  endif 
+  mov r2.xyzw, l(0,0,0,0)
+  mov r0.w, l(0)
+  loop 
+    ilt r3.x, r0.y, r0.w
+    breakc_nz r3.x
+    iadd r3.x, r0.w, vThreadIDInGroup.x
+    ld_structured r3.xyzw, r3.x, l(0), g0.xyzw
+    add r2.xyzw, r2.xyzw, r3.xyzw
+    iadd r0.w, r0.w, l(1)
+  endloop 
+  bfi r0.w, l(31), l(1), r0.x, l(1)
+  itof r0.w, r0.w
+  div r2.xyzw, r2.xyzw, r0.wwww
+  mov r1.yzw, vThreadGroupID.yyyy
+  store_uav_typed u0.xyzw, r1.xyzw, r2.xyzw
+else 
+  uge r0.w, vThreadGroupID.y, cb0[0].z
+  if_nz r0.w
+    ret 
+  endif 
+  ishl r0.w, vThreadGroupID.x, l(8)
+  iadd r1.x, cb0[0].w, l(-1)
+  mov r2.x, vThreadGroupID.y
+  mov r2.zw, l(0,0,0,0)
+  mov r1.y, vThreadIDInGroup.x
+  loop 
+    ige r1.z, r1.y, r0.z
+    breakc_nz r1.z
+    iadd r1.z, r0.w, r1.y
+    iadd r1.z, -r0.x, r1.z
+    imax r1.z, r1.z, l(0)
+    imin r2.y, r1.x, r1.z
+    ld_indexable(texture2d)(float,float,float,float) r3.xyzw, r2.xyzw, t0.xyzw
+    store_structured g0.xyzw, r1.y, l(0), r3.xyzw
+    iadd r1.y, r1.y, l(256)
+  endloop 
+  sync_g_t
+  imad r1.yzw, vThreadGroupID.xxxx, l(0, 256, 256, 256), vThreadIDInGroup.xxxx
+  uge r0.z, r1.w, cb0[0].w
+  if_nz r0.z
+    ret 
+  endif 
+  mov r2.xyzw, l(0,0,0,0)
+  mov r0.z, l(0)
+  loop 
+    ilt r0.w, r0.y, r0.z
+    breakc_nz r0.w
+    iadd r0.w, r0.z, vThreadIDInGroup.x
+    ld_structured r3.xyzw, r0.w, l(0), g0.xyzw
+    add r2.xyzw, r2.xyzw, r3.xyzw
+    iadd r0.z, r0.z, l(1)
+  endloop 
+  bfi r0.x, l(31), l(1), r0.x, l(1)
+  itof r0.x, r0.x
+  div r0.xyzw, r2.xyzw, r0.xxxx
+  mov r1.x, vThreadGroupID.y
+  store_uav_typed u0.xyzw, r1.xyzw, r0.xyzw
+endif 
+ret 
+// Approximately 89 instruction slots used
+#endif
+
+const BYTE g_BoxBlurCS[] =
+{
+     68,  88,  66,  67, 109, 156, 
+    172,  79,  78, 198,  69,  61, 
+     87,   5,  27, 232,  85, 229, 
+     69, 181,   1,   0,   0,   0, 
+    212,  10,   0,   0,   5,   0, 
+      0,   0,  52,   0,   0,   0, 
+     80,   2,   0,   0,  96,   2, 
+      0,   0, 112,   2,   0,   0, 
+     56,  10,   0,   0,  82,  68, 
+     69,  70,  20,   2,   0,   0, 
+      1,   0,   0,   0, 192,   0, 
+      0,   0,   3,   0,   0,   0, 
+     60,   0,   0,   0,   0,   5, 
+     83,  67,   0,   1,   0,   0, 
+    233,   1,   0,   0,  82,  68, 
+     49,  49,  60,   0,   0,   0, 
+     24,   0,   0,   0,  32,   0, 
+      0,   0,  40,   0,   0,   0, 
+     36,   0,   0,   0,  12,   0, 
+      0,   0,   0,   0,   0,   0, 
+    156,   0,   0,   0,   2,   0, 
+      0,   0,   5,   0,   0,   0, 
+      4,   0,   0,   0, 255, 255, 
+    255, 255,   0,   0,   0,   0, 
+      1,   0,   0,   0,  13,   0, 
+      0,   0, 165,   0,   0,   0, 
+      4,   0,   0,   0,   5,   0, 
+      0,   0,   4,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+     13,   0,   0,   0, 175,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   1,   0, 
+      0,   0,   1,   0,   0,   0, 
+     73, 110, 112, 117, 116,  84, 
+    101, 120,   0,  79, 117, 116, 
+    112, 117, 116,  84, 101, 120, 
+      0,  66, 108, 117, 114,  67, 
+    111, 110, 115, 116,  97, 110, 
+    116, 115,   0, 171, 171, 171, 
+    175,   0,   0,   0,   4,   0, 
+      0,   0, 216,   0,   0,   0, 
+     16,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+    120,   1,   0,   0,   0,   0, 
+      0,   0,   4,   0,   0,   0, 
+      2,   0,   0,   0, 136,   1, 
+      0,   0,   0,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0, 255, 255, 255, 255, 
+      0,   0,   0,   0, 172,   1, 
+      0,   0,   4,   0,   0,   0, 
+      4,   0,   0,   0,   2,   0, 
+      0,   0, 184,   1,   0,   0, 
+      0,   0,   0,   0, 255, 255, 
+    255, 255,   0,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0, 220,   1,   0,   0, 
+      8,   0,   0,   0,   4,   0, 
+      0,   0,   2,   0,   0,   0, 
+    136,   1,   0,   0,   0,   0, 
+      0,   0, 255, 255, 255, 255, 
+      0,   0,   0,   0, 255, 255, 
+    255, 255,   0,   0,   0,   0, 
+    226,   1,   0,   0,  12,   0, 
+      0,   0,   4,   0,   0,   0, 
+      2,   0,   0,   0, 136,   1, 
+      0,   0,   0,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0, 255, 255, 255, 255, 
+      0,   0,   0,   0,  68, 105, 
+    114, 101,  99, 116, 105, 111, 
+    110,   0, 100, 119, 111, 114, 
+    100,   0,   0,   0,  19,   0, 
+      1,   0,   1,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0, 130,   1, 
+      0,   0,  82,  97, 100, 105, 
+    117, 115,   0, 105, 110, 116, 
+      0, 171,   0,   0,   2,   0, 
+      1,   0,   1,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0, 179,   1, 
+      0,   0,  87, 105, 100, 116, 
+    104,   0,  72, 101, 105, 103, 
+    104, 116,   0,  77, 105,  99, 
+    114, 111, 115, 111, 102, 116, 
+     32,  40,  82,  41,  32,  72, 
+     76,  83,  76,  32,  83, 104, 
+     97, 100, 101, 114,  32,  67, 
+    111, 109, 112, 105, 108, 101, 
+    114,  32,  49,  48,  46,  49, 
+      0, 171, 171, 171,  73,  83, 
+     71,  78,   8,   0,   0,   0, 
+      0,   0,   0,   0,   8,   0, 
+      0,   0,  79,  83,  71,  78, 
+      8,   0,   0,   0,   0,   0, 
+      0,   0,   8,   0,   0,   0, 
+     83,  72,  69,  88, 192,   7, 
+      0,   0,  80,   0,   5,   0, 
+    240,   1,   0,   0, 106,   8, 
+      0,   1,  89,   0,   0,   4, 
+     70, 142,  32,   0,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+     88,  24,   0,   4,   0, 112, 
+     16,   0,   0,   0,   0,   0, 
+     85,  85,   0,   0, 156,  24, 
+      0,   4,   0, 224,  17,   0, 
+      0,   0,   0,   0,  85,  85, 
+      0,   0,  95,   0,   0,   2, 
+     50,  16,   2,   0,  95,   0, 
+      0,   2,  18,  32,   2,   0, 
+    104,   0,   0,   2,   4,   0, 
+      0,   0, 160,   0,   0,   5, 
+      0, 240,  17,   0,   0,   0, 
+      0,   0,  16,   0,   0,   0, 
+     64,   1,   0,   0, 155,   0, 
+      0,   4,   0,   1,   0,   0, 
+      1,   0,   0,   0,   1,   0, 
+      0,   0,  37,   0,   0,   8, 
+     18,   0,  16,   0,   0,   0, 
+      0,   0,  26, 128,  32,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   1,  64,   0,   0, 
+     32,   0,   0,   0,  41,   0, 
+      0,   7,  34,   0,  16,   0, 
+      0,   0,   0,   0,  10,   0, 
+     16,   0,   0,   0,   0,   0, 
+      1,  64,   0,   0,   1,   0, 
+      0,   0,  30,   0,   0,   7, 
+     66,   0,  16,   0,   0,   0, 
+      0,   0,  26,   0,  16,   0, 
+      0,   0,   0,   0,   1,  64, 
+      0,   0,   0,   1,   0,   0, 
+     31,   0,   0,   4,  10, 128, 
+     32,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,  80,   0, 
+      0,   7, 130,   0,  16,   0, 
+      0,   0,   0,   0,  26,  16, 
+      2,   0,  58, 128,  32,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,  31,   0,   4,   3, 
+     58,   0,  16,   0,   0,   0, 
+      0,   0,  62,   0,   0,   1, 
+     21,   0,   0,   1,  41,   0, 
+      0,   6, 130,   0,  16,   0, 
+      0,   0,   0,   0,  10,  16, 
+      2,   0,   1,  64,   0,   0, 
+      8,   0,   0,   0,  30,   0, 
+      0,   8,  18,   0,  16,   0, 
+      1,   0,   0,   0,  42, 128, 
+     32,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   1,  64, 
+      0,   0, 255, 255, 255, 255, 
+     54,   0,   0,   4,  34,   0, 
+     16,   0,   2,   0,   0,   0, 
+     26,  16,   2,   0,  54,   0, 
+      0,   8, 194,   0,  16,   0, 
+      2,   0,   0,   0,   2,  64, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+     54,   0,   0,   4,  34,   0, 
+     16,   0,   1,   0,   0,   0, 
+     10,  32,   2,   0,  48,   0, 
+      0,   1,  33,   0,   0,   7, 
+     66,   0,  16,   0,   1,   0, 
+      0,   0,  26,   0,  16,   0, 
+      1,   0,   0,   0,  42,   0, 
+     16,   0,   0,   0,   0,   0, 
+      3,   0,   4,   3,  42,   0, 
+     16,   0,   1,   0,   0,   0, 
+     30,   0,   0,   7,  66,   0, 
+     16,   0,   1,   0,   0,   0, 
+     58,   0,  16,   0,   0,   0, 
+      0,   0,  26,   0,  16,   0, 
+      1,   0,   0,   0,  30,   0, 
+      0,   8,  66,   0,  16,   0, 
+      1,   0,   0,   0,  10,   0, 
+     16, 128,  65,   0,   0,   0, 
+      0,   0,   0,   0,  42,   0, 
+     16,   0,   1,   0,   0,   0, 
+     36,   0,   0,   7,  66,   0, 
+     16,   0,   1,   0,   0,   0, 
+     42,   0,  16,   0,   1,   0, 
+      0,   0,   1,  64,   0,   0, 
+      0,   0,   0,   0,  37,   0, 
+      0,   7,  18,   0,  16,   0, 
+      2,   0,   0,   0,  10,   0, 
+     16,   0,   1,   0,   0,   0, 
+     42,   0,  16,   0,   1,   0, 
+      0,   0,  45,   0,   0, 137, 
+    194,   0,   0, 128,  67,  85, 
+     21,   0, 242,   0,  16,   0, 
+      3,   0,   0,   0,  70,  14, 
+     16,   0,   2,   0,   0,   0, 
+     70, 126,  16,   0,   0,   0, 
+      0,   0, 168,   0,   0,   9, 
+    242, 240,  17,   0,   0,   0, 
+      0,   0,  26,   0,  16,   0, 
+      1,   0,   0,   0,   1,  64, 
+      0,   0,   0,   0,   0,   0, 
+     70,  14,  16,   0,   3,   0, 
+      0,   0,  30,   0,   0,   7, 
+     34,   0,  16,   0,   1,   0, 
+      0,   0,  26,   0,  16,   0, 
+      1,   0,   0,   0,   1,  64, 
+      0,   0,   0,   1,   0,   0, 
+     22,   0,   0,   1, 190,  24, 
+      0,   1,  35,   0,   0,   7, 
+     18,   0,  16,   0,   1,   0, 
+      0,   0,  10,  16,   2,   0, 
+      1,  64,   0,   0,   0,   1, 
+      0,   0,  10,  32,   2,   0, 
+     80,   0,   0,   8, 130,   0, 
+     16,   0,   0,   0,   0,   0, 
+     10,   0,  16,   0,   1,   0, 
+      0,   0,  42, 128,  32,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,  31,   0,   4,   3, 
+     58,   0,  16,   0,   0,   0, 
+      0,   0,  62,   0,   0,   1, 
+     21,   0,   0,   1,  54,   0, 
+      0,   8, 242,   0,  16,   0, 
+      2,   0,   0,   0,   2,  64, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+     54,   0,   0,   5, 130,   0, 
+     16,   0,   0,   0,   0,   0, 
+      1,  64,   0,   0,   0,   0, 
+      0,   0,  48,   0,   0,   1, 
+     34,   0,   0,   7,  18,   0, 
+     16,   0,   3,   0,   0,   0, 
+     26,   0,  16,   0,   0,   0, 
+      0,   0,  58,   0,  16,   0, 
+      0,   0,   0,   0,   3,   0, 
+      4,   3,  10,   0,  16,   0, 
+      3,   0,   0,   0,  30,   0, 
+      0,   6,  18,   0,  16,   0, 
+      3,   0,   0,   0,  58,   0, 
+     16,   0,   0,   0,   0,   0, 
+     10,  32,   2,   0, 167,   0, 
+      0,   9, 242,   0,  16,   0, 
+      3,   0,   0,   0,  10,   0, 
+     16,   0,   3,   0,   0,   0, 
+      1,  64,   0,   0,   0,   0, 
+      0,   0,  70, 254,  17,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   7, 242,   0,  16,   0, 
+      2,   0,   0,   0,  70,  14, 
+     16,   0,   2,   0,   0,   0, 
+     70,  14,  16,   0,   3,   0, 
+      0,   0,  30,   0,   0,   7, 
+    130,   0,  16,   0,   0,   0, 
+      0,   0,  58,   0,  16,   0, 
+      0,   0,   0,   0,   1,  64, 
+      0,   0,   1,   0,   0,   0, 
+     22,   0,   0,   1, 140,   0, 
+      0,  11, 130,   0,  16,   0, 
+      0,   0,   0,   0,   1,  64, 
+      0,   0,  31,   0,   0,   0, 
+      1,  64,   0,   0,   1,   0, 
+      0,   0,  10,   0,  16,   0, 
+      0,   0,   0,   0,   1,  64, 
+      0,   0,   1,   0,   0,   0, 
+     43,   0,   0,   5, 130,   0, 
+     16,   0,   0,   0,   0,   0, 
+     58,   0,  16,   0,   0,   0, 
+      0,   0,  14,   0,   0,   7, 
+    242,   0,  16,   0,   2,   0, 
+      0,   0,  70,  14,  16,   0, 
+      2,   0,   0,   0, 246,  15, 
+     16,   0,   0,   0,   0,   0, 
+     54,   0,   0,   4, 226,   0, 
+     16,   0,   1,   0,   0,   0, 
+     86,  21,   2,   0, 164,   0, 
+      0,   7, 242, 224,  17,   0, 
+      0,   0,   0,   0,  70,  14, 
+     16,   0,   1,   0,   0,   0, 
+     70,  14,  16,   0,   2,   0, 
+      0,   0,  18,   0,   0,   1, 
+     80,   0,   0,   7, 130,   0, 
+     16,   0,   0,   0,   0,   0, 
+     26,  16,   2,   0,  42, 128, 
+     32,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,  31,   0, 
+      4,   3,  58,   0,  16,   0, 
+      0,   0,   0,   0,  62,   0, 
+      0,   1,  21,   0,   0,   1, 
+     41,   0,   0,   6, 130,   0, 
+     16,   0,   0,   0,   0,   0, 
+     10,  16,   2,   0,   1,  64, 
+      0,   0,   8,   0,   0,   0, 
+     30,   0,   0,   8,  18,   0, 
+     16,   0,   1,   0,   0,   0, 
+     58, 128,  32,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      1,  64,   0,   0, 255, 255, 
+    255, 255,  54,   0,   0,   4, 
+     18,   0,  16,   0,   2,   0, 
+      0,   0,  26,  16,   2,   0, 
+     54,   0,   0,   8, 194,   0, 
+     16,   0,   2,   0,   0,   0, 
+      2,  64,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,  54,   0,   0,   4, 
+     34,   0,  16,   0,   1,   0, 
+      0,   0,  10,  32,   2,   0, 
+     48,   0,   0,   1,  33,   0, 
+      0,   7,  66,   0,  16,   0, 
+      1,   0,   0,   0,  26,   0, 
+     16,   0,   1,   0,   0,   0, 
+     42,   0,  16,   0,   0,   0, 
+      0,   0,   3,   0,   4,   3, 
+     42,   0,  16,   0,   1,   0, 
+      0,   0,  30,   0,   0,   7, 
+     66,   0,  16,   0,   1,   0, 
+      0,   0,  58,   0,  16,   0, 
+      0,   0,   0,   0,  26,   0, 
+     16,   0,   1,   0,   0,   0, 
+     30,   0,   0,   8,  66,   0, 
+     16,   0,   1,   0,   0,   0, 
+     10,   0,  16, 128,  65,   0, 
+      0,   0,   0,   0,   0,   0, 
+     42,   0,  16,   0,   1,   0, 
+      0,   0,  36,   0,   0,   7, 
+     66,   0,  16,   0,   1,   0, 
+      0,   0,  42,   0,  16,   0, 
+      1,   0,   0,   0,   1,  64, 
+      0,   0,   0,   0,   0,   0, 
+     37,   0,   0,   7,  34,   0, 
+     16,   0,   2,   0,   0,   0, 
+     10,   0,  16,   0,   1,   0, 
+      0,   0,  42,   0,  16,   0, 
+      1,   0,   0,   0,  45,   0, 
+      0, 137, 194,   0,   0, 128, 
+     67,  85,  21,   0, 242,   0, 
+     16,   0,   3,   0,   0,   0, 
+     70,  14,  16,   0,   2,   0, 
+      0,   0,  70, 126,  16,   0, 
+      0,   0,   0,   0, 168,   0, 
+      0,   9, 242, 240,  17,   0, 
+      0,   0,   0,   0,  26,   0, 
+     16,   0,   1,   0,   0,   0, 
+      1,  64,   0,   0,   0,   0, 
+      0,   0,  70,  14,  16,   0, 
+      3,   0,   0,   0,  30,   0, 
+      0,   7,  34,   0,  16,   0, 
+      1,   0,   0,   0,  26,   0, 
+     16,   0,   1,   0,   0,   0, 
+      1,  64,   0,   0,   0,   1, 
+      0,   0,  22,   0,   0,   1, 
+    190,  24,   0,   1,  35,   0, 
+      0,  10, 226,   0,  16,   0, 
+      1,   0,   0,   0,   6,  16, 
+      2,   0,   2,  64,   0,   0, 
+      0,   0,   0,   0,   0,   1, 
+      0,   0,   0,   1,   0,   0, 
+      0,   1,   0,   0,   6,  32, 
+      2,   0,  80,   0,   0,   8, 
+     66,   0,  16,   0,   0,   0, 
+      0,   0,  58,   0,  16,   0, 
+      1,   0,   0,   0,  58, 128, 
+     32,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,  31,   0, 
+      4,   3,  42,   0,  16,   0, 
+      0,   0,   0,   0,  62,   0, 
+      0,   1,  21,   0,   0,   1, 
+     54,   0,   0,   8, 242,   0, 
+     16,   0,   2,   0,   0,   0, 
+      2,  64,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,  54,   0,   0,   5, 
+     66,   0,  16,   0,   0,   0, 
+      0,   0,   1,  64,   0,   0, 
+      0,   0,   0,   0,  48,   0, 
+      0,   1,  34,   0,   0,   7, 
+    130,   0,  16,   0,   0,   0, 
+      0,   0,  26,   0,  16,   0, 
+      0,   0,   0,   0,  42,   0, 
+     16,   0,   0,   0,   0,   0, 
+      3,   0,   4,   3,  58,   0, 
+     16,   0,   0,   0,   0,   0, 
+     30,   0,   0,   6, 130,   0, 
+     16,   0,   0,   0,   0,   0, 
+     42,   0,  16,   0,   0,   0, 
+      0,   0,  10,  32,   2,   0, 
+    167,   0,   0,   9, 242,   0, 
+     16,   0,   3,   0,   0,   0, 
+     58,   0,  16,   0,   0,   0, 
+      0,   0,   1,  64,   0,   0, 
+      0,   0,   0,   0,  70, 254, 
+     17,   0,   0,   0,   0,   0, 
+      0,   0,   0,   7, 242,   0, 
+     16,   0,   2,   0,   0,   0, 
+     70,  14,  16,   0,   2,   0, 
+      0,   0,  70,  14,  16,   0, 
+      3,   0,   0,   0,  30,   0, 
+      0,   7,  66,   0,  16,   0, 
+      0,   0,   0,   0,  42,   0, 
+     16,   0,   0,   0,   0,   0, 
+      1,  64,   0,   0,   1,   0, 
+      0,   0,  22,   0,   0,   1, 
+    140,   0,   0,  11,  18,   0, 
+     16,   0,   0,   0,   0,   0, 
+      1,  64,   0,   0,  31,   0, 
+      0,   0,   1,  64,   0,   0, 
+      1,   0,   0,   0,  10,   0, 
+     16,   0,   0,   0,   0,   0, 
+      1,  64,   0,   0,   1,   0, 
+      0,   0,  43,   0,   0,   5, 
+     18,   0,  16,   0,   0,   0, 
+      0,   0,  10,   0,  16,   0, 
+      0,   0,   0,   0,  14,   0, 
+      0,   7, 242,   0,  16,   0, 
+      0,   0,   0,   0,  70,  14, 
+     16,   0,   2,   0,   0,   0, 
+      6,   0,  16,   0,   0,   0, 
+      0,   0,  54,   0,   0,   4, 
+     18,   0,  16,   0,   1,   0, 
+      0,   0,  26,  16,   2,   0, 
+    164,   0,   0,   7, 242, 224, 
+     17,   0,   0,   0,   0,   0, 
+     70,  14,  16,   0,   1,   0, 
+      0,   0,  70,  14,  16,   0, 
+      0,   0,   0,   0,  21,   0, 
+      0,   1,  62,   0,   0,   1, 
+     83,  84,  65,  84, 148,   0, 
+      0,   0,  89,   0,   0,   0, 
+      4,   0,   0,   0,   0,   0, 
+      0,   0,   2,   0,   0,   0, 
+      4,   0,   0,   0,  27,   0, 
+      0,   0,   4,   0,   0,   0, 
+      7,   0,   0,   0,   8,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   2,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+     12,   0,   0,   0,   0,   0, 
+      0,   0,   2,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      2,   0,   0,   0,   0,   0, 
+      0,   0,   2,   0,   0,   0
+};

src/modules/ZoomIt/ZoomIt/BoxBlurCS.hlsl

@@ -0,0 +1,115 @@
+//==============================================================================
+//
+// BoxBlurCS.hlsl
+//
+// D3D11 compute shader for separable box blur.  Each dispatch performs
+// either a horizontal or a vertical pass controlled by the Direction
+// constant.  Run four dispatches (H→V→H→V) to approximate a Gaussian.
+//
+// Uses group-shared memory so each texel is loaded once per thread
+// group, then reused across the sliding window.
+//
+// Entry point:
+//   CSMain  (cs_5_0)
+//
+// Recompile with:
+//   fxc /T cs_5_0 /E CSMain /Fh BoxBlurCS.h /Vn g_BoxBlurCS BoxBlurCS.hlsl
+//
+// Copyright (C) Mark Russinovich
+// Sysinternals - www.sysinternals.com
+//
+//==============================================================================
+
+// Input texture (read-only).
+Texture2D<float4>   InputTex  : register(t0);
+
+// Output texture (write-only).
+RWTexture2D<float4> OutputTex : register(u0);
+
+cbuffer BlurConstants : register(b0)
+{
+    uint  Direction;    // 0 = horizontal, 1 = vertical
+    int   Radius;       // Box blur radius in pixels
+    uint  Width;        // Image width
+    uint  Height;       // Image height
+};
+
+// Thread group: 256 threads along the blur axis.
+#define GROUP_SIZE 256
+
+// Max radius we support.  Shared memory = (GROUP_SIZE + 2*MAX_RADIUS) * 4 floats * 4 bytes
+// = (256 + 64) * 16 = ~5 KB, well within the 32 KB limit.
+#define MAX_RADIUS 32
+
+// Shared memory tile: enough for the group + apron on both sides.
+groupshared float4 tile[GROUP_SIZE + 2 * MAX_RADIUS];
+
+[numthreads(GROUP_SIZE, 1, 1)]
+void CSMain( uint3 groupId    : SV_GroupID,
+             uint3 groupTid   : SV_GroupThreadID,
+             uint3 dispatchId : SV_DispatchThreadID )
+{
+    int r = min( Radius, MAX_RADIUS );
+    int tileSize = GROUP_SIZE + 2 * r;
+    int tid = (int)groupTid.x;
+
+    if( Direction == 0 )
+    {
+        // ── Horizontal pass ────────────────────────────────────────
+        int row = (int)groupId.y;
+        if( (uint)row >= Height )
+            return;
+
+        int groupStart = (int)groupId.x * GROUP_SIZE;
+
+        // Load tile: each thread loads its primary texel + apron.
+        for( int i = tid; i < tileSize; i += GROUP_SIZE )
+        {
+            int srcX = clamp( groupStart + i - r, 0, (int)Width - 1 );
+            tile[i] = InputTex[int2( srcX, row )];
+        }
+        GroupMemoryBarrierWithGroupSync();
+
+        int outX = groupStart + tid;
+        if( (uint)outX >= Width )
+            return;
+
+        // Sum the window from shared memory.
+        float4 sum = (float4)0;
+        int windowStart = tid;        // tile index = tid + r - r
+        for( int k = 0; k <= 2 * r; k++ )
+        {
+            sum += tile[windowStart + k];
+        }
+        OutputTex[int2( outX, row )] = sum / (float)( 2 * r + 1 );
+    }
+    else
+    {
+        // ── Vertical pass ──────────────────────────────────────────
+        int col = (int)groupId.y;
+        if( (uint)col >= Width )
+            return;
+
+        int groupStart = (int)groupId.x * GROUP_SIZE;
+
+        // Load tile.
+        for( int i = tid; i < tileSize; i += GROUP_SIZE )
+        {
+            int srcY = clamp( groupStart + i - r, 0, (int)Height - 1 );
+            tile[i] = InputTex[int2( col, srcY )];
+        }
+        GroupMemoryBarrierWithGroupSync();
+
+        int outY = groupStart + tid;
+        if( (uint)outY >= Height )
+            return;
+
+        float4 sum = (float4)0;
+        int windowStart = tid;
+        for( int k = 0; k <= 2 * r; k++ )
+        {
+            sum += tile[windowStart + k];
+        }
+        OutputTex[int2( col, outY )] = sum / (float)( 2 * r + 1 );
+    }
+}

src/modules/ZoomIt/ZoomIt/CaptureFrameWait.cpp

@@ -77,6 +77,7 @@ std::optional<CaptureFrame> CaptureFrameWait::TryGetNextFrame()
     if (m_currentFrame != nullptr)
     {
         m_currentFrame.Close();
+        m_currentFrame = nullptr;  // Prevent double-Close on subsequent calls
     }
     m_nextFrameEvent.ResetEvent();
 
@@ -107,6 +108,33 @@ std::optional<CaptureFrame> CaptureFrameWait::TryGetNextFrame()
 }
 
 
+//----------------------------------------------------------------------------
+//
+// CaptureFrameWait::PeekCurrentFrame
+//
+// Returns the frame that is currently held (if any) without closing
+// it and without waiting for a new one.  This is useful during
+// recording startup: the constructor captured a frame when the
+// session began, and OnMediaStreamSourceStarting can use it
+// immediately instead of blocking until the next desktop change.
+// The frame remains alive in the pool until the next
+// TryGetNextFrame() call closes it.
+//
+//----------------------------------------------------------------------------
+std::optional<CaptureFrame> CaptureFrameWait::PeekCurrentFrame() const
+{
+    if (m_currentFrame != nullptr)
+    {
+        return std::optional<CaptureFrame>(
+            {
+                m_currentFrame.Surface(),
+                m_currentFrame.ContentSize(),
+                m_currentFrame.SystemRelativeTime(),
+            });
+    }
+    return std::nullopt;
+}
+
 //----------------------------------------------------------------------------
 //
 // CaptureFrameWait::TryGetNextFrame (with timeout)
@@ -121,6 +149,7 @@ std::optional<CaptureFrame> CaptureFrameWait::TryGetNextFrame( DWORD timeoutMs )
     if( m_currentFrame != nullptr )
     {
         m_currentFrame.Close();
+        m_currentFrame = nullptr;  // Prevent double-Close on subsequent calls
     }
     m_nextFrameEvent.ResetEvent();
 

src/modules/ZoomIt/ZoomIt/CaptureFrameWait.h

@@ -108,6 +108,7 @@ public:
 
     std::optional<CaptureFrame> TryGetNextFrame();
     std::optional<CaptureFrame> TryGetNextFrame( DWORD timeoutMs );
+    std::optional<CaptureFrame> PeekCurrentFrame() const;
     void StopCapture();
     void EnableCursorCapture( bool enable = true )
     {

src/modules/ZoomIt/ZoomIt/NoiseSuppressor.cpp

@@ -0,0 +1,113 @@
+#include "pch.h"
+#include "NoiseSuppressor.h"
+
+extern "C" {
+#include "rnnoise/rnnoise.h"
+}
+
+// RNNoise processes 480 mono samples per frame (10ms at 48kHz)
+static constexpr uint32_t RNNOISE_FRAME_SIZE = 480;
+
+// RNNoise expects samples in PCM16 range (-32768 to 32767), not normalized float [-1, 1]
+static constexpr float PCM16_SCALE = 32768.0f;
+static constexpr float PCM16_SCALE_INV = 1.0f / 32768.0f;
+
+NoiseSuppressor::NoiseSuppressor()
+{
+}
+
+NoiseSuppressor::~NoiseSuppressor()
+{
+    for (auto& channel : m_channels)
+    {
+        if (channel.state)
+        {
+            rnnoise_destroy(channel.state);
+        }
+    }
+}
+
+void NoiseSuppressor::EnsureChannelCount(uint32_t channels)
+{
+    if (m_channels.size() == channels)
+    {
+        return;
+    }
+
+    // Channel count changed (or first call): rebuild per-channel RNNoise state.
+    for (auto& channel : m_channels)
+    {
+        if (channel.state)
+        {
+            rnnoise_destroy(channel.state);
+        }
+    }
+
+    m_channels.clear();
+    m_channels.resize(channels);
+    for (auto& channel : m_channels)
+    {
+        channel.state = rnnoise_create(nullptr);
+    }
+}
+
+void NoiseSuppressor::Process(float* samples, uint32_t sampleCount, uint32_t channels)
+{
+    if (sampleCount == 0 || channels == 0)
+    {
+        return;
+    }
+
+    EnsureChannelCount(channels);
+
+    uint32_t frameCount = sampleCount / channels;
+
+    // Denoise each channel independently so the original channel layout is
+    // preserved (e.g. a mic wired only to the left channel stays on the left
+    // and silent channels stay silent instead of being filled with the voice).
+    for (uint32_t ch = 0; ch < channels; ch++)
+    {
+        ChannelState& channel = m_channels[ch];
+        if (!channel.state)
+        {
+            continue;
+        }
+
+        uint32_t residualCount = static_cast<uint32_t>(channel.residual.size());
+        uint32_t totalSamples = residualCount + frameCount;
+
+        channel.work.resize(totalSamples);
+
+        // Copy residual from previous call
+        if (residualCount > 0)
+        {
+            memcpy(channel.work.data(), channel.residual.data(), residualCount * sizeof(float));
+        }
+
+        // Deinterleave this channel and scale to PCM16 range for RNNoise
+        for (uint32_t i = 0; i < frameCount; i++)
+        {
+            channel.work[residualCount + i] = samples[i * channels + ch] * PCM16_SCALE;
+        }
+
+        // Process complete 480-sample frames through RNNoise
+        uint32_t processedSamples = 0;
+        while (processedSamples + RNNOISE_FRAME_SIZE <= totalSamples)
+        {
+            rnnoise_process_frame(channel.state, &channel.work[processedSamples], &channel.work[processedSamples]);
+            processedSamples += RNNOISE_FRAME_SIZE;
+        }
+
+        // Save unprocessed residual for next call
+        channel.residual.assign(
+            channel.work.begin() + processedSamples,
+            channel.work.end());
+
+        // Write denoised samples back to the interleaved buffer, scaling back to
+        // normalized float. Only this call's input region is written back.
+        for (uint32_t i = 0; i < frameCount; i++)
+        {
+            samples[i * channels + ch] = channel.work[residualCount + i] * PCM16_SCALE_INV;
+        }
+    }
+}

src/modules/ZoomIt/ZoomIt/NoiseSuppressor.h

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <vector>
+#include <stdint.h>
+
+struct DenoiseState;
+
+class NoiseSuppressor
+{
+public:
+    NoiseSuppressor();
+    ~NoiseSuppressor();
+
+    NoiseSuppressor(const NoiseSuppressor&) = delete;
+    NoiseSuppressor& operator=(const NoiseSuppressor&) = delete;
+
+    // Process interleaved multi-channel float samples in-place.
+    // Each channel is denoised independently through its own RNNoise state in
+    // 480-sample frames, preserving the original channel layout (e.g. a mic
+    // wired only to the left channel stays on the left and is not duplicated
+    // onto the right).
+    void Process(float* samples, uint32_t sampleCount, uint32_t channels);
+
+private:
+    // Per-channel RNNoise state and buffers so each channel is denoised
+    // independently and the channel layout is preserved.
+    struct ChannelState
+    {
+        DenoiseState* state = nullptr;
+        std::vector<float> work;      // Working buffer for the current quantum
+        std::vector<float> residual;  // Leftover samples from previous quantum
+    };
+
+    void EnsureChannelCount(uint32_t channels);
+
+    std::vector<ChannelState> m_channels;
+};

src/modules/ZoomIt/ZoomIt/VideoRecordingSession.cpp

@@ -32,6 +32,9 @@ extern DWORD g_WebcamPosition;
 extern DWORD g_WebcamSize;
 extern DWORD g_WebcamShape;
 extern TCHAR g_WebcamDeviceSymLink[MAX_PATH];
+extern DWORD g_WebcamBackgroundMode;
+extern TCHAR g_WebcamBackgroundImage[];
+extern DWORD g_WebcamBrightness;
 extern class ClassRegistry reg;
 extern REG_SETTING RegSettings[];
 extern HINSTANCE g_hInstance;
@@ -106,6 +109,34 @@ static double RecDiagElapsedMs()
     return static_cast<double>( now.QuadPart - s_origin.QuadPart ) * 1000.0 / s_freq.QuadPart;
 }
 
+static FILE* s_recDiagFile = nullptr;
+
+static void RecDiagOpenFile()
+{
+    if( !s_recDiagFile )
+    {
+        wchar_t path[MAX_PATH];
+        if( ExpandEnvironmentStringsW( L"%TEMP%\\ZoomIt_RecDiag.log", path, MAX_PATH ) )
+        {
+            _wfopen_s( &s_recDiagFile, path, L"a" );
+            if( s_recDiagFile )
+            {
+                fwprintf( s_recDiagFile, L"\n===== NEW SESSION =====\n" );
+                fflush( s_recDiagFile );
+            }
+        }
+    }
+}
+
+static void RecDiagCloseFile()
+{
+    if( s_recDiagFile )
+    {
+        fclose( s_recDiagFile );
+        s_recDiagFile = nullptr;
+    }
+}
+
 static void RecDiag( const wchar_t* fmt, ... )
 {
     wchar_t buf[512];
@@ -123,8 +154,19 @@ static void RecDiag( const wchar_t* fmt, ... )
     _vsnwprintf_s( buf + offset, _countof( buf ) - offset, _TRUNCATE, fmt, va );
     va_end( va );
     OutputDebugStringW( buf );
+
+    RecDiagOpenFile();
+    if( s_recDiagFile )
+    {
+        fwprintf( s_recDiagFile, L"%s", buf );
+        fflush( s_recDiagFile );
+    }
 }
 
+static int s_diagVideoCount = 0;
+static int s_diagAudioCount = 0;
+static int64_t s_diagStartTs = 0;  // SystemRelativeTime from OnStarting
+
 static bool IsGifPath(const std::wstring& path)
 {
     try
@@ -930,12 +972,20 @@ VideoRecordingSession::VideoRecordingSession(
     winrt::GraphicsCaptureItem const& item,
     RECT const cropRect,
     uint32_t frameRate,
-    bool captureAudio,
-    bool captureSystemAudio,
-    bool micMonoMix,
+    std::unique_ptr<AudioSampleGenerator> audioGenerator,
+    winrt::IAsyncAction audioInitAction,
     winrt::Streams::IRandomAccessStream const& stream)
 {
     RecDiag( L"Constructor: entry\n" );
+
+    // Take ownership of pre-created audio generator.  Its InitializeAsync
+    // was started in StartRecordingAsync so it runs in parallel with all
+    // the D3D, capture-item, and webcam setup below.
+    m_audioGenerator = std::move( audioGenerator );
+    m_audioInitAction = audioInitAction;
+    RecDiag( L"Constructor: audio generator received (init %s)\n",
+             m_audioInitAction ? L"pending" : L"none" );
+
     m_device = device;
     m_d3dDevice = GetDXGIInterfaceFromObject<ID3D11Device>(m_device);
     m_d3dDevice->GetImmediateContext(m_d3dContext.put());
@@ -1038,8 +1088,15 @@ VideoRecordingSession::VideoRecordingSession(
                 probeCapture.Close();
                 return true;
             }
+            catch( winrt::hresult_error const& ex )
+            {
+                RecDiag( L"Constructor: webcam probe failed hr=0x%08X: %s\n",
+                         static_cast<unsigned>( ex.code() ), ex.message().c_str() );
+                return false;
+            }
             catch( ... )
             {
+                RecDiag( L"Constructor: webcam probe failed with unknown exception\n" );
                 return false;
             }
         });
@@ -1067,7 +1124,10 @@ VideoRecordingSession::VideoRecordingSession(
             static_cast<WebcamCapture::Position>( g_WebcamPosition ),
             static_cast<WebcamCapture::Size>( g_WebcamSize ),
             webcamShape,
-            isFullScreenRecording );
+            isFullScreenRecording,
+            static_cast<WebcamBackgroundMode>( g_WebcamBackgroundMode ),
+            g_WebcamBackgroundImage,
+            static_cast<int>( g_WebcamBrightness ) );
         m_webcamCapture->Start();
         RecDiag( L"Constructor: WebcamCapture::Start() returned\n" );
     }
@@ -1089,13 +1149,10 @@ VideoRecordingSession::VideoRecordingSession(
     // Store frame interval for timeout-based frame production when webcam is active.
     m_frameIntervalTicks = ( frameRate > 0 ) ? ( 10'000'000LL / frameRate ) : 333'333LL;
 
-    if (captureAudio || captureSystemAudio)
-    {
-        // Always set up audio profile for loopback capture (stereo AAC)
-        auto audio = m_encodingProfile.Audio();
-        audio = winrt::AudioEncodingProperties::CreateAac(48000, 2, 192000);
-        m_encodingProfile.Audio(audio);
-    }
+    // NOTE: Audio encoding profile (m_encodingProfile.Audio) is set in
+    // StartAsync() after the audio graph is fully initialized, not here.
+    // Calling GetEncodingProperties() before InitializeAsync completes
+    // would crash because m_audioOutputNode is still null.
 
     // Describe our input: uncompressed BGRA8 buffers
     auto properties = winrt::VideoEncodingProperties::CreateUncompressed(
@@ -1113,15 +1170,6 @@ VideoRecordingSession::VideoRecordingSession(
         DXGI_FORMAT_B8G8R8A8_UNORM,
         2);
 
-    if (captureAudio || captureSystemAudio)
-    {
-        m_audioGenerator = std::make_unique<AudioSampleGenerator>(captureAudio, captureSystemAudio, micMonoMix);
-    }
-    else
-    {
-        m_audioGenerator = nullptr;
-    }
-
     // Wait for the webcam's first frame now that all other setup is done.
     // The camera was started early, so most of its ~850 ms sensor warmup has
     // overlapped with the encoding profile, swap chain, and audio generator
@@ -1155,6 +1203,7 @@ VideoRecordingSession::VideoRecordingSession(
 VideoRecordingSession::~VideoRecordingSession()
 {
     Close();
+    RecDiagCloseFile();
 }
 
 
@@ -1173,10 +1222,24 @@ winrt::IAsyncAction VideoRecordingSession::StartAsync()
         // Create our MediaStreamSource
         if(m_audioGenerator) {
 
-            RecDiag( L"StartAsync: co_await InitializeAsync...\n" );
-            co_await m_audioGenerator->InitializeAsync();
+            RecDiag( L"StartAsync: co_await audio init...\n" );
+            if (m_audioInitAction) {
+                co_await m_audioInitAction;   // started in constructor
+                m_audioInitAction = nullptr;
+            } else {
+                co_await m_audioGenerator->InitializeAsync();
+            }
             RecDiag( L"StartAsync: audio initialized\n" );
-            m_streamSource = winrt::MediaStreamSource(m_videoDescriptor, winrt::AudioStreamDescriptor(m_audioGenerator->GetEncodingProperties()));
+
+            // Set up the audio encoding profile now that the audio graph is
+            // fully initialized.  GetEncodingProperties() requires
+            // m_audioOutputNode to be valid, which is only guaranteed after
+            // InitializeAsync completes.
+            auto audioProps = m_audioGenerator->GetEncodingProperties();
+            m_encodingProfile.Audio(winrt::AudioEncodingProperties::CreateAac(
+                audioProps.SampleRate(), audioProps.ChannelCount(), 192000));
+
+            m_streamSource = winrt::MediaStreamSource(m_videoDescriptor, winrt::AudioStreamDescriptor(audioProps));
         }
         else {
 
@@ -1236,6 +1299,9 @@ winrt::IAsyncAction VideoRecordingSession::StartAsync()
 //----------------------------------------------------------------------------
 void VideoRecordingSession::Close()
 {
+    RecDiag( L"Close: totalVideoFrames=%d totalAudioSamples=%d\n",
+             s_diagVideoCount, s_diagAudioCount );
+
     // Stop webcam capture before closing the main session.
     if( m_webcamCapture )
     {
@@ -1285,28 +1351,45 @@ void VideoRecordingSession::OnMediaStreamSourceStarting(
     winrt::MediaStreamSource const&,
     winrt::MediaStreamSourceStartingEventArgs const& args)
 {
-    RecDiag( L"OnStarting: entry, calling TryGetNextFrame...\n" );
-    auto frame = m_frameWait->TryGetNextFrame();
+    // Close the stale frame captured in the constructor (~1-2 seconds
+    // ago) and grab a FRESH frame via TryGetNextFrame.  This gives us
+    // both current visual content and a current SystemRelativeTime,
+    // avoiding the frozen-first-frame artefact.  WGC delivers a new
+    // frame within one vblank (~16 ms) after the old frame is released
+    // back to the pool, so a 200 ms timeout is very generous.
+    RecDiag( L"OnStarting: calling TryGetNextFrame(200) for fresh frame...\n" );
+    auto frame = m_frameWait->TryGetNextFrame( 200 );
+
+    int64_t startSRT = 0;
+
     if (frame) {
-        RecDiag( L"OnStarting: got frame, SystemRelativeTime=%lld (%.1fms)\n",
-                 frame->SystemRelativeTime.count(),
-                 frame->SystemRelativeTime.count() / 10000.0 );
-        args.Request().SetActualStartPosition(frame->SystemRelativeTime);
+        startSRT = frame->SystemRelativeTime.count();
+        RecDiag( L"OnStarting: got fresh frame, SRT=%lld (%.1fms)\n",
+                 startSRT, startSRT / 10000.0 );
 
-        // Cache this frame so it can be served as the very first video
-        // sample in OnMediaStreamSourceSampleRequested.  Without this,
-        // the frame is discarded and the first encoded sample comes from
-        // the *next* capture, creating a visible timestamp gap.
+        args.Request().SetActualStartPosition( frame->SystemRelativeTime );
         m_cachedStartingFrame = frame;
-
-        if (m_audioGenerator) {
-
-            RecDiag( L"OnStarting: calling AudioSampleGenerator::Start()\n" );
-            m_audioGenerator->Start();
-            RecDiag( L"OnStarting: audio started\n" );
-        }
+        m_adjustedStartSRT = startSRT;
     } else {
-        RecDiag( L"OnStarting: TryGetNextFrame returned nullopt!\n" );
+        // Timeout (very unlikely).  Fall back to QPC-derived SRT.
+        // Use double for the intermediate product to avoid int64
+        // overflow (naive integer multiply overflows after ~25.6 h).
+        RecDiag( L"OnStarting: TryGetNextFrame timed out, using QPC fallback\n" );
+        LARGE_INTEGER qpcFreq, qpcNow;
+        QueryPerformanceFrequency( &qpcFreq );
+        QueryPerformanceCounter( &qpcNow );
+        startSRT = static_cast<int64_t>(
+            static_cast<double>( qpcNow.QuadPart ) * 10'000'000.0 / qpcFreq.QuadPart );
+        args.Request().SetActualStartPosition( winrt::TimeSpan{ startSRT } );
+        m_adjustedStartSRT = startSRT;
+    }
+
+    // Start audio capture.  Pass the video start SRT so audio
+    // timestamps can be rebased to the same domain as video.
+    if (m_audioGenerator) {
+        RecDiag( L"OnStarting: calling AudioSampleGenerator::Start(videoStartSRT=%lld)\n", startSRT );
+        m_audioGenerator->Start( startSRT );
+        RecDiag( L"OnStarting: audio started\n" );
     }
     RecDiag( L"OnStarting: exit\n" );
 }
@@ -1321,12 +1404,11 @@ std::shared_ptr<VideoRecordingSession> VideoRecordingSession::Create(
     winrt::GraphicsCaptureItem const& item,
     RECT const& crop,
     uint32_t frameRate,
-    bool captureAudio,
-    bool captureSystemAudio,
-    bool micMonoMix,
+    std::unique_ptr<AudioSampleGenerator> audioGenerator,
+    winrt::IAsyncAction audioInitAction,
     winrt::Streams::IRandomAccessStream const& stream)
 {
-    return std::shared_ptr<VideoRecordingSession>(new VideoRecordingSession(device, item, crop, frameRate, captureAudio, captureSystemAudio, micMonoMix, stream));
+    return std::shared_ptr<VideoRecordingSession>(new VideoRecordingSession(device, item, crop, frameRate, std::move(audioGenerator), audioInitAction, stream));
 }
 
 //----------------------------------------------------------------------------
@@ -1338,10 +1420,6 @@ void VideoRecordingSession::OnMediaStreamSourceSampleRequested(
     winrt::MediaStreamSource const&,
     winrt::MediaStreamSourceSampleRequestedEventArgs const& args)
 {
-    static int s_diagVideoCount = 0;
-    static int s_diagAudioCount = 0;
-    static int64_t s_diagStartTs = 0;  // SystemRelativeTime from OnStarting
-
     auto request = args.Request();
     auto streamDescriptor = request.StreamDescriptor();
     if (auto videoStreamDescriptor = streamDescriptor.try_as<winrt::VideoStreamDescriptor>())
@@ -1412,7 +1490,16 @@ void VideoRecordingSession::OnMediaStreamSourceSampleRequested(
             else
             {
                 // New desktop frame — crop and copy to back buffer.
-                timeStamp = frame->SystemRelativeTime;
+                // If this is the cached starting frame, use the adjusted
+                // SRT (computed from QPC in OnStarting) instead of the
+                // stale SRT from the constructor.  The stale SRT is ~2-3s
+                // behind, creating a massive timestamp gap between frame
+                // #1 and #2 that causes the transcoder to starve video
+                // while filling the gap with audio.
+                if( cachedFrame.has_value() && m_adjustedStartSRT != 0 )
+                    timeStamp = winrt::TimeSpan{ m_adjustedStartSRT };
+                else
+                    timeStamp = frame->SystemRelativeTime;
                 auto contentSize = frame->ContentSize;
                 auto frameTexture = GetDXGIInterfaceFromObject<ID3D11Texture2D>(frame->FrameTexture);
                 D3D11_TEXTURE2D_DESC desc = {};
@@ -1448,7 +1535,7 @@ void VideoRecordingSession::OnMediaStreamSourceSampleRequested(
                 m_d3dContext->CopyResource( m_cachedDesktopTex.get(), backBuffer.get() );
             }
 
-            // Log first 10 video frames with timing.
+            // Log first 50 video frames with timing.
             if( !m_hasVideoSample.load() )
             {
                 s_diagVideoCount = 0;
@@ -1462,13 +1549,14 @@ void VideoRecordingSession::OnMediaStreamSourceSampleRequested(
                 m_hasQpcOrigin = true;
             }
             s_diagVideoCount++;
-            if( s_diagVideoCount <= 10 )
+            if( s_diagVideoCount <= 50 )
             {
-                RecDiag( L"SampleReq VIDEO #%d: sysRelTime=%lld deltaFromStart=%.1fms repeat=%d\n",
+                RecDiag( L"SampleReq VIDEO #%d: sysRelTime=%lld deltaFromStart=%.1fms repeat=%d cached=%d\n",
                          s_diagVideoCount,
                          timeStamp.count(),
                          ( timeStamp.count() - s_diagStartTs ) / 10000.0,
-                         isRepeatFrame ? 1 : 0 );
+                         isRepeatFrame ? 1 : 0,
+                         ( s_diagVideoCount == 1 && cachedFrame.has_value() ) ? 1 : 0 );
             }
 
 #if _DEBUG
@@ -1492,6 +1580,11 @@ void VideoRecordingSession::OnMediaStreamSourceSampleRequested(
             // Composite webcam overlay onto the back buffer.
             if( m_webcamCapture )
             {
+                if( s_diagVideoCount <= 3 )
+                {
+                    RecDiag( L"SampleReq VIDEO #%d: compositing LIVE webcam frame\n",
+                             s_diagVideoCount );
+                }
                 m_webcamCapture->CompositeOnto( backBuffer.get() );
             }
 
@@ -1541,7 +1634,9 @@ void VideoRecordingSession::OnMediaStreamSourceSampleRequested(
         }
         catch (winrt::hresult_error const& error)
         {
-            OutputDebugStringW(error.message().c_str());
+            RecDiag( L"SampleReq VIDEO EXCEPTION on frame #%d: hr=0x%08X %s\n",
+                     s_diagVideoCount, static_cast<unsigned>(error.code()),
+                     error.message().c_str() );
             request.Sample(nullptr);
             CloseInternal();
             return;
@@ -1551,26 +1646,53 @@ void VideoRecordingSession::OnMediaStreamSourceSampleRequested(
     {
         try
         {
+            static int s_audioReqCount = 0;
+            if( !m_hasVideoSample.load() )
+                s_audioReqCount = 0;
+            s_audioReqCount++;
+
+            if( s_audioReqCount <= 5 )
+            {
+                RecDiag( L"SampleReq AUDIO req #%d: calling TryGetNextSample (started=%d)...\n",
+                         s_audioReqCount, m_audioGenerator ? 1 : 0 );
+            }
+
+            LARGE_INTEGER tBefore, tAfter, tFreq;
+            QueryPerformanceFrequency( &tFreq );
+            QueryPerformanceCounter( &tBefore );
+
             if (auto sample = m_audioGenerator ? m_audioGenerator->TryGetNextSample() : std::optional<winrt::MediaStreamSample>{}; sample.has_value())
             {
+                QueryPerformanceCounter( &tAfter );
+                double waitMs = static_cast<double>( tAfter.QuadPart - tBefore.QuadPart ) * 1000.0 / tFreq.QuadPart;
+
                 s_diagAudioCount++;
-                if( s_diagAudioCount <= 10 )
+                if( s_diagAudioCount <= 50 )
                 {
-                    RecDiag( L"SampleReq AUDIO #%d: timestamp=%lld (%.1fms)\n",
-                             s_diagAudioCount,
-                             sample.value().Timestamp().count(),
-                             sample.value().Timestamp().count() / 10000.0 );
+                    auto ts = sample.value().Timestamp().count();
+                    auto dur = sample.value().Duration().count();
+                    RecDiag( L"SampleReq AUDIO #%d (req %d): timestamp=%lld (%.1fms) duration=%lld (%.1fms) waitMs=%.1f\n",
+                             s_diagAudioCount, s_audioReqCount,
+                             ts, ts / 10000.0,
+                             dur, dur / 10000.0,
+                             waitMs );
                 }
                 request.Sample(sample.value());
             }
             else
             {
+                QueryPerformanceCounter( &tAfter );
+                double waitMs = static_cast<double>( tAfter.QuadPart - tBefore.QuadPart ) * 1000.0 / tFreq.QuadPart;
+                RecDiag( L"SampleReq AUDIO req #%d: TryGetNextSample returned EMPTY after %.1fms → end-of-audio-stream\n",
+                         s_audioReqCount, waitMs );
                 request.Sample(nullptr);
             }
         }
         catch (winrt::hresult_error const& error)
         {
-            OutputDebugStringW(error.message().c_str());
+            RecDiag( L"SampleReq AUDIO EXCEPTION on sample #%d: hr=0x%08X %s\n",
+                     s_diagAudioCount, static_cast<unsigned>(error.code()),
+                     error.message().c_str() );
             request.Sample(nullptr);
             CloseInternal();
             return;
@@ -1659,7 +1781,7 @@ public:
         }
         return S_OK;
     }
-    
+
     IFACEMETHODIMP OnFolderChanging(IFileDialog*, IShellItem*) { return S_OK; }
     IFACEMETHODIMP OnSelectionChange(IFileDialog*) { return S_OK; }
     IFACEMETHODIMP OnShareViolation(IFileDialog*, IShellItem*, FDE_SHAREVIOLATION_RESPONSE*) { return S_OK; }
@@ -2838,7 +2960,7 @@ static void HandlePlaybackCommand(int controlId, VideoRecordingSession::TrimDial
     case IDC_TRIM_REWIND:
     {
         StopPlayback(hDlg, pData, false);
-        // Use 1 second step for timelines < 20 seconds, 2 seconds 
+        // Use 1 second step for timelines < 20 seconds, 2 seconds
         const int64_t duration = pData->trimEnd.count() - pData->trimStart.count();
         const int64_t stepTicks = (duration < 200'000'000) ? 10'000'000 : kJogStepTicks;
         const int64_t newTicks = (std::max)(pData->trimStart.count(), pData->currentPosition.count() - stepTicks);
@@ -2854,7 +2976,7 @@ static void HandlePlaybackCommand(int controlId, VideoRecordingSession::TrimDial
     case IDC_TRIM_FORWARD:
     {
         StopPlayback(hDlg, pData, false);
-        // Use 1 second step for timelines < 20 seconds, 2 seconds 
+        // Use 1 second step for timelines < 20 seconds, 2 seconds
         const int64_t duration = pData->trimEnd.count() - pData->trimStart.count();
         const int64_t stepTicks = (duration < 200'000'000) ? 10'000'000 : kJogStepTicks;
         const int64_t newTicks = (std::min)(pData->trimEnd.count(), pData->currentPosition.count() + stepTicks);
@@ -5517,7 +5639,7 @@ INT_PTR CALLBACK VideoRecordingSession::TrimDialogProc(HWND hDlg, UINT message,
                 const auto relativePos = winrt::TimeSpan{ (std::max)(pData->currentPosition.count() - pData->trimStart.count(), int64_t{ 0 }) };
                 SetTimeText(hDlg, IDC_TRIM_POSITION_LABEL, relativePos, true);
             }
-            
+
             if (elapsedMs >= frameDurationMs)
             {
                 // Time to advance to next frame

src/modules/ZoomIt/ZoomIt/VideoRecordingSession.h

@@ -27,9 +27,8 @@ public:
         winrt::GraphicsCaptureItem const& item,
         RECT const& cropRect,
         uint32_t frameRate,
-        bool captureAudio,
-        bool captureSystemAudio,
-        bool micMonoMix,
+        std::unique_ptr<AudioSampleGenerator> audioGenerator,
+        winrt::Windows::Foundation::IAsyncAction audioInitAction,
         winrt::Streams::IRandomAccessStream const& stream);
     ~VideoRecordingSession();
 
@@ -217,9 +216,8 @@ private:
         winrt::Capture::GraphicsCaptureItem const& item,
         RECT const cropRect,
         uint32_t frameRate,
-        bool captureAudio,
-        bool captureSystemAudio,
-        bool micMonoMix,
+        std::unique_ptr<AudioSampleGenerator> audioGenerator,
+        winrt::Windows::Foundation::IAsyncAction audioInitAction,
         winrt::Streams::IRandomAccessStream const& stream);
     void CloseInternal();
 
@@ -279,5 +277,9 @@ private:
     LARGE_INTEGER m_qpcFreq{};
     LARGE_INTEGER m_qpcRecordingStart{};    // QPC at first sample
     int64_t m_startSystemRelativeTime = 0; // SystemRelativeTime of first frame
+    int64_t m_adjustedStartSRT = 0;        // QPC-based current SRT set in OnStarting
     bool m_hasQpcOrigin = false;
+
+    // Audio initialization started in the constructor, awaited in StartAsync.
+    winrt::Windows::Foundation::IAsyncAction m_audioInitAction{ nullptr };
 };

src/modules/ZoomIt/ZoomIt/WebcamCapture.h

@@ -18,11 +18,37 @@
 #include <mfreadwrite.h>
 #include <atomic>
 #include <condition_variable>
+#include <memory>
+#include "BackgroundBlur.h"
 #include <mutex>
 #include <thread>
 #include <vector>
 #include <winrt/base.h>
 
+class BackgroundBlur;
+
+// Must match CompositeConstants cbuffer layout in WebcamComposite.hlsl.
+struct GpuCompositeConstants
+{
+    float CropOffsetX, CropOffsetY;     // Camera crop UV offset
+    float CropScaleX, CropScaleY;       // Camera crop UV scale
+    float Gamma;                        // Gamma correction exponent
+    float CornerRadius;                 // Corner radius in output pixels
+    float OutputW, OutputH;             // Output dimensions
+    UINT  ShapeType;                    // 0=Square, 1=RoundedRect, 2=RoundedSquare, 3=Circle
+    UINT  HasMask;                      // 1 if mask texture valid
+    float Pad[2];
+};
+
+// Must match BlurConstants cbuffer layout in BoxBlurCS.hlsl.
+struct GpuBlurConstants
+{
+    UINT  Direction;    // 0 = horizontal, 1 = vertical
+    INT   Radius;       // Box blur radius in pixels
+    UINT  Width;        // Image width
+    UINT  Height;       // Image height
+};
+
 class WebcamCapture
 {
 public:
@@ -44,7 +70,10 @@ public:
         Position position,
         Size size,
         Shape shape,
-        bool fullScreenRecording = false );
+        bool fullScreenRecording = false,
+        WebcamBackgroundMode backgroundMode = WebcamBackgroundMode::None,
+        const wchar_t* backgroundImagePath = nullptr,
+        int brightness = 50 );
     ~WebcamCapture();
 
     // Start/stop the capture thread.
@@ -106,6 +135,19 @@ private:
     bool InitSourceReader();
     RECT ComputeDestRect() const;
     void ComputeOverlayDimensions();
+    bool InitGpuComposite();
+    bool GpuComposite( const UINT32* cameraPixels, UINT camW, UINT camH,
+                       const UINT32* blurPixels, UINT blurW, UINT blurH,
+                       const float* mask, UINT maskW, UINT maskH,
+                       UINT outW, UINT outH,
+                       UINT srcCropX, UINT srcCropY, UINT srcCropW, UINT srcCropH,
+                       float gamma, Shape shape, float cornerRadius,
+                       ID3D11ShaderResourceView* preBlurSRV = nullptr );
+
+    // GPU box blur: runs 4 compute-shader dispatches (H→V→H→V) on the
+    // processing-resolution frame.  The result stays GPU-resident in
+    // m_blurPingPong[0] for direct use by GpuComposite.
+    bool GpuBoxBlur( const UINT32* pixels, UINT width, UINT height, int radius );
 
     winrt::com_ptr<ID3D11Device>        m_d3dDevice;
     winrt::com_ptr<ID3D11DeviceContext> m_d3dContext;
@@ -135,6 +177,7 @@ private:
     // Reusable frame buffer for the capture thread (avoids per-frame alloc).
     std::vector<BYTE>                   m_framePixels;
     std::vector<BYTE>                   m_scaledPixels;
+    std::vector<BYTE>                   m_upscalePixels;
 
     UINT                                m_overlayW = 0;
     UINT                                m_overlayH = 0;
@@ -142,6 +185,11 @@ private:
     UINT                                m_camHeight = 0;
     RECT                                m_destRect = {};
 
+    // Brightness correction (user-controlled, fixed gamma LUT).
+    int                                 m_brightness = 50;     // 0=dark, 50=neutral, 100=bright
+    std::array<uint8_t, 256>            m_gammaLUT = {};        // current LUT
+    double                              m_lutGamma = 1.0;      // gamma used for m_gammaLUT
+
     // Output dimensions (recording output after crop+scale).
     UINT                                m_outputWidth = 0;
     UINT                                m_outputHeight = 0;
@@ -163,8 +211,57 @@ private:
     std::condition_variable             m_readyCV;
     bool                                m_firstFrameCaptured = false;
 
+    // Background processing.
+    WebcamBackgroundMode                m_backgroundMode = WebcamBackgroundMode::None;
+    std::wstring                        m_backgroundImagePath;
+    std::unique_ptr<BackgroundBlur>     m_backgroundBlur;
+
     // Debug counters for CompositeOnto logging.
     int                                 m_compositeCount = 0;
     int                                 m_lockFailCount = 0;
     int                                 m_uploadCount = 0;
+
+    // ── GPU composite pipeline ──────────────────────────────
+    // Separate D3D device for capture thread (avoids contention
+    // with the recording session's device/context).
+    winrt::com_ptr<ID3D11Device>            m_gpuDevice;
+    winrt::com_ptr<ID3D11DeviceContext>      m_gpuContext;
+    winrt::com_ptr<ID3D11VertexShader>       m_compositeVS;
+    winrt::com_ptr<ID3D11PixelShader>        m_compositePS;
+    winrt::com_ptr<ID3D11Buffer>             m_compositeCB;
+    winrt::com_ptr<ID3D11SamplerState>       m_bilinearSampler;
+    winrt::com_ptr<ID3D11RasterizerState>    m_gpuRasterState;
+    winrt::com_ptr<ID3D11BlendState>         m_gpuBlendState;
+
+    // Input textures + SRVs (recreated when dimensions change).
+    winrt::com_ptr<ID3D11Texture2D>          m_gpuCameraTex;
+    winrt::com_ptr<ID3D11ShaderResourceView> m_gpuCameraSRV;
+    UINT                                     m_gpuCameraW = 0, m_gpuCameraH = 0;
+
+    winrt::com_ptr<ID3D11Texture2D>          m_gpuBlurTex;
+    winrt::com_ptr<ID3D11ShaderResourceView> m_gpuBlurSRV;
+    UINT                                     m_gpuBlurW = 0, m_gpuBlurH = 0;
+
+    winrt::com_ptr<ID3D11Texture2D>          m_gpuMaskTex;
+    winrt::com_ptr<ID3D11ShaderResourceView> m_gpuMaskSRV;
+    UINT                                     m_gpuMaskW = 0, m_gpuMaskH = 0;
+
+    // Render target + staging for readback.
+    winrt::com_ptr<ID3D11Texture2D>          m_gpuRenderTarget;
+    winrt::com_ptr<ID3D11RenderTargetView>   m_gpuRTV;
+    winrt::com_ptr<ID3D11Texture2D>          m_gpuStaging;
+    UINT                                     m_gpuRTW = 0, m_gpuRTH = 0;
+
+    bool                                     m_gpuCompositeReady = false;
+
+    // ── GPU box-blur compute pipeline ───────────────────────
+    winrt::com_ptr<ID3D11ComputeShader>      m_blurCS;
+    winrt::com_ptr<ID3D11Buffer>             m_blurCB;
+
+    // Ping-pong textures with SRV + UAV for blur passes.
+    winrt::com_ptr<ID3D11Texture2D>          m_blurPingPong[2];
+    winrt::com_ptr<ID3D11ShaderResourceView> m_blurPingSRV[2];
+    winrt::com_ptr<ID3D11UnorderedAccessView> m_blurPingUAV[2];
+    UINT                                     m_blurPPW = 0, m_blurPPH = 0;
+    bool                                     m_gpuBlurReady = false;
 };

src/modules/ZoomIt/ZoomIt/WebcamComposite.hlsl

@@ -0,0 +1,143 @@
+//==============================================================================
+//
+// WebcamComposite.hlsl
+//
+// GPU composite shader for webcam overlay.
+// Composites sharp foreground from full-resolution camera with
+// blurred background from processing-resolution blur buffer, using
+// a segmentation mask to blend between the two sources.
+//
+// The GPU's hardware texture sampler provides free bilinear filtering,
+// making this orders of magnitude faster than the equivalent CPU loop.
+//
+// Entry points:
+//   VSMain  (vs_5_0)  — full-screen triangle, no vertex buffer needed
+//   PSMain  (ps_5_0)  — composite camera + blur + mask + shape mask
+//
+// Recompile with:
+//   fxc /T vs_5_0 /E VSMain /Fh WebcamCompositeVS.h /Vn g_WebcamCompositeVS WebcamComposite.hlsl
+//   fxc /T ps_5_0 /E PSMain /Fh WebcamCompositePS.h /Vn g_WebcamCompositePS WebcamComposite.hlsl
+//
+// Copyright (C) Mark Russinovich
+// Sysinternals - www.sysinternals.com
+//
+//==============================================================================
+
+// Camera frame at full resolution (e.g. 1920x1080), B8G8R8A8_UNORM.
+// Shader sees RGBA due to hardware swizzle.
+Texture2D    CameraTex : register(t0);
+
+// Blurred processing buffer at reduced resolution (e.g. 960x540), B8G8R8A8_UNORM.
+// Already gamma-corrected from CPU downsample.
+Texture2D    BlurTex   : register(t1);
+
+// Segmentation mask from ONNX model, R32_FLOAT.
+// 1.0 = foreground (person), 0.0 = background.
+Texture2D    MaskTex   : register(t2);
+
+// Bilinear sampler with clamp addressing — used for all textures.
+SamplerState BilinearSamp : register(s0);
+
+cbuffer CompositeConstants : register(b0)
+{
+    float2 CropOffset;      // Camera crop UV offset (srcCropX/camW, srcCropY/camH)
+    float2 CropScale;       // Camera crop UV scale  (srcCropW/camW, srcCropH/camH)
+    float  Gamma;           // Gamma correction exponent (< 1 brightens)
+    float  CornerRadius;    // Corner radius in output pixels
+    float  OutputW;         // Output width in pixels
+    float  OutputH;         // Output height in pixels
+    uint   ShapeType;       // 0=Square, 1=RoundedRect, 2=RoundedSquare, 3=Circle
+    uint   HasMask;         // 1 if segmentation mask is valid
+    float2 Pad;
+};
+
+struct VSOutput
+{
+    float4 Position : SV_POSITION;
+    float2 TexCoord : TEXCOORD0;
+};
+
+//----------------------------------------------------------------------------
+// Vertex shader: full-screen triangle from SV_VertexID (no vertex buffer).
+//   Draw(3, 0) to invoke.  The triangle covers [-1,1] clip space.
+//----------------------------------------------------------------------------
+VSOutput VSMain( uint vertexId : SV_VertexID )
+{
+    VSOutput output;
+    output.TexCoord = float2( (vertexId << 1) & 2, vertexId & 2 );
+    output.Position = float4( output.TexCoord * float2(2.0, -2.0) + float2(-1.0, 1.0), 0.0, 1.0 );
+    return output;
+}
+
+//----------------------------------------------------------------------------
+// Pixel shader: composite camera foreground with blurred background.
+//   - Shape masking (circle, rounded rect) produces alpha = 0 outside.
+//   - Segmentation mask blends camera (foreground) with blur (background).
+//   - Gamma correction applied to camera samples only (blur already corrected).
+//   - Hardware bilinear filtering on all texture samples (free).
+//----------------------------------------------------------------------------
+float4 PSMain( VSOutput input ) : SV_TARGET
+{
+    float2 uv = input.TexCoord;
+    float px = uv.x * OutputW;
+    float py = uv.y * OutputH;
+
+    // ── Shape mask ─────────────────────────────────────────────────────
+    if( ShapeType == 3 )  // Circle
+    {
+        float halfW  = OutputW * 0.5;
+        float halfH  = OutputH * 0.5;
+        float radius = min( halfW, halfH );
+        float dx = ( px - halfW ) / radius;
+        float dy = ( py - halfH ) / radius;
+        if( dx * dx + dy * dy > 1.0 )
+            return float4( 0, 0, 0, 0 );
+    }
+    else if( ShapeType >= 1 )  // RoundedRect or RoundedSquare
+    {
+        float cx = 0, cy = 0;
+        bool inCorner = false;
+
+        if( px < CornerRadius && py < CornerRadius )
+        { cx = CornerRadius; cy = CornerRadius; inCorner = true; }
+        else if( px > OutputW - CornerRadius && py < CornerRadius )
+        { cx = OutputW - CornerRadius; cy = CornerRadius; inCorner = true; }
+        else if( px < CornerRadius && py > OutputH - CornerRadius )
+        { cx = CornerRadius; cy = OutputH - CornerRadius; inCorner = true; }
+        else if( px > OutputW - CornerRadius && py > OutputH - CornerRadius )
+        { cx = OutputW - CornerRadius; cy = OutputH - CornerRadius; inCorner = true; }
+
+        if( inCorner )
+        {
+            float ddx = px - cx;
+            float ddy = py - cy;
+            if( ddx * ddx + ddy * ddy > CornerRadius * CornerRadius )
+                return float4( 0, 0, 0, 0 );
+        }
+    }
+
+    // ── Composite ──────────────────────────────────────────────────────
+    if( HasMask )
+    {
+        // Segmentation mask (bilinear-filtered for smooth edges).
+        float mask = saturate( MaskTex.Sample( BilinearSamp, uv ).r );
+
+        // Camera: crop-to-fill UV mapping + gamma correction.
+        float2 camUV = CropOffset + uv * CropScale;
+        float4 cam   = CameraTex.Sample( BilinearSamp, camUV );
+        cam.rgb = pow( max( cam.rgb, 0.001 ), Gamma );
+
+        // Blur: already gamma-corrected from CPU downsample.
+        float4 blur = BlurTex.Sample( BilinearSamp, uv );
+
+        // Blend: mask=1 → camera (foreground), mask=0 → blur (background).
+        float3 result = lerp( blur.rgb, cam.rgb, mask );
+        return float4( result, 1.0 );
+    }
+    else
+    {
+        // No segmentation mask — just display the processing buffer.
+        float4 blur = BlurTex.Sample( BilinearSamp, uv );
+        return float4( blur.rgb, 1.0 );
+    }
+}

src/modules/ZoomIt/ZoomIt/WebcamCompositePS.h

@@ -0,0 +1,616 @@
+#if 0
+//
+// Generated by Microsoft (R) HLSL Shader Compiler 10.1
+//
+//
+// Buffer Definitions: 
+//
+// cbuffer CompositeConstants
+// {
+//
+//   float2 CropOffset;                 // Offset:    0 Size:     8
+//   float2 CropScale;                  // Offset:    8 Size:     8
+//   float Gamma;                       // Offset:   16 Size:     4
+//   float CornerRadius;                // Offset:   20 Size:     4
+//   float OutputW;                     // Offset:   24 Size:     4
+//   float OutputH;                     // Offset:   28 Size:     4
+//   uint ShapeType;                    // Offset:   32 Size:     4
+//   uint HasMask;                      // Offset:   36 Size:     4
+//   float2 Pad;                        // Offset:   40 Size:     8 [unused]
+//
+// }
+//
+//
+// Resource Bindings:
+//
+// Name                                 Type  Format         Dim      HLSL Bind  Count
+// ------------------------------ ---------- ------- ----------- -------------- ------
+// BilinearSamp                      sampler      NA          NA             s0      1 
+// CameraTex                         texture  float4          2d             t0      1 
+// BlurTex                           texture  float4          2d             t1      1 
+// MaskTex                           texture  float4          2d             t2      1 
+// CompositeConstants                cbuffer      NA          NA            cb0      1 
+//
+//
+//
+// Input signature:
+//
+// Name                 Index   Mask Register SysValue  Format   Used
+// -------------------- ----- ------ -------- -------- ------- ------
+// SV_POSITION              0   xyzw        0      POS   float       
+// TEXCOORD                 0   xy          1     NONE   float   xy  
+//
+//
+// Output signature:
+//
+// Name                 Index   Mask Register SysValue  Format   Used
+// -------------------- ----- ------ -------- -------- ------- ------
+// SV_TARGET                0   xyzw        0   TARGET   float   xyzw
+//
+ps_5_0
+dcl_globalFlags refactoringAllowed
+dcl_constantbuffer CB0[3], immediateIndexed
+dcl_sampler s0, mode_default
+dcl_resource_texture2d (float,float,float,float) t0
+dcl_resource_texture2d (float,float,float,float) t1
+dcl_resource_texture2d (float,float,float,float) t2
+dcl_input_ps linear v1.xy
+dcl_output o0.xyzw
+dcl_temps 4
+mul r0.xy, v1.xyxx, cb0[1].zwzz
+ieq r0.z, cb0[2].x, l(3)
+if_nz r0.z
+  mul r0.zw, cb0[1].zzzw, l(0.000000, 0.000000, 0.500000, 0.500000)
+  min r1.x, r0.w, r0.z
+  mad r0.zw, v1.xxxy, cb0[1].zzzw, -r0.zzzw
+  div r0.zw, r0.zzzw, r1.xxxx
+  mul r0.zw, r0.zzzw, r0.zzzw
+  add r0.z, r0.w, r0.z
+  lt r0.z, l(1.000000), r0.z
+  if_nz r0.z
+    mov o0.xyzw, l(0,0,0,0)
+    ret 
+  endif 
+else 
+  uge r0.z, cb0[2].x, l(1)
+  if_nz r0.z
+    lt r0.zw, r0.yyyx, cb0[1].yyyy
+    and r1.x, r0.z, r0.w
+    add r2.xy, -cb0[1].yyyy, cb0[1].zwzz
+    lt r0.xy, r2.xyxx, r0.xyxx
+    and r0.zw, r0.zzzw, r0.xxxy
+    and r3.z, r0.y, r0.x
+    and r3.xy, r2.xyxx, r3.zzzz
+    mov r2.z, cb0[1].y
+    mov r2.w, l(-1)
+    movc r0.xyw, r0.wwww, r2.zyzw, r3.xyxz
+    movc r0.xyz, r0.zzzz, r2.xzwx, r0.xywx
+    movc r0.xyz, r1.xxxx, r2.zzwz, r0.xyzx
+    if_nz r0.z
+      mad r0.xy, v1.xyxx, cb0[1].zwzz, -r0.xyxx
+      mul r0.xy, r0.xyxx, r0.xyxx
+      add r0.x, r0.y, r0.x
+      mul r0.y, cb0[1].y, cb0[1].y
+      lt r0.x, r0.y, r0.x
+      if_nz r0.x
+        mov o0.xyzw, l(0,0,0,0)
+        ret 
+      endif 
+    endif 
+  endif 
+endif 
+if_nz cb0[2].y
+  sample_indexable(texture2d)(float,float,float,float) r0.x, v1.xyxx, t2.xyzw, s0
+  mov_sat r0.x, r0.x
+  mad r0.yz, v1.xxyx, cb0[0].zzwz, cb0[0].xxyx
+  sample_indexable(texture2d)(float,float,float,float) r0.yzw, r0.yzyy, t0.wxyz, s0
+  max r0.yzw, r0.yyzw, l(0.000000, 0.001000, 0.001000, 0.001000)
+  log r0.yzw, r0.yyzw
+  mul r0.yzw, r0.yyzw, cb0[1].xxxx
+  exp r0.yzw, r0.yyzw
+  sample_indexable(texture2d)(float,float,float,float) r1.xyz, v1.xyxx, t1.xyzw, s0
+  add r0.yzw, r0.yyzw, -r1.xxyz
+  mad o0.xyz, r0.xxxx, r0.yzwy, r1.xyzx
+  mov o0.w, l(1.000000)
+  ret 
+else 
+  sample_indexable(texture2d)(float,float,float,float) r0.xyz, v1.xyxx, t1.xyzw, s0
+  mov o0.xyz, r0.xyzx
+  mov o0.w, l(1.000000)
+  ret 
+endif 
+ret 
+// Approximately 63 instruction slots used
+#endif
+
+const BYTE g_WebcamCompositePS[] =
+{
+     68,  88,  66,  67,  78, 221, 
+    134, 205, 221, 100,  55,  97, 
+    108,  36, 219, 137, 244, 189, 
+     76, 224,   1,   0,   0,   0, 
+    108,  11,   0,   0,   5,   0, 
+      0,   0,  52,   0,   0,   0, 
+    208,   3,   0,   0,  40,   4, 
+      0,   0,  92,   4,   0,   0, 
+    208,  10,   0,   0,  82,  68, 
+     69,  70, 148,   3,   0,   0, 
+      1,   0,   0,   0,  24,   1, 
+      0,   0,   5,   0,   0,   0, 
+     60,   0,   0,   0,   0,   5, 
+    255, 255,   0,   1,   0,   0, 
+    108,   3,   0,   0,  82,  68, 
+     49,  49,  60,   0,   0,   0, 
+     24,   0,   0,   0,  32,   0, 
+      0,   0,  40,   0,   0,   0, 
+     36,   0,   0,   0,  12,   0, 
+      0,   0,   0,   0,   0,   0, 
+    220,   0,   0,   0,   3,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      1,   0,   0,   0,   1,   0, 
+      0,   0, 233,   0,   0,   0, 
+      2,   0,   0,   0,   5,   0, 
+      0,   0,   4,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+     13,   0,   0,   0, 243,   0, 
+      0,   0,   2,   0,   0,   0, 
+      5,   0,   0,   0,   4,   0, 
+      0,   0, 255, 255, 255, 255, 
+      1,   0,   0,   0,   1,   0, 
+      0,   0,  13,   0,   0,   0, 
+    251,   0,   0,   0,   2,   0, 
+      0,   0,   5,   0,   0,   0, 
+      4,   0,   0,   0, 255, 255, 
+    255, 255,   2,   0,   0,   0, 
+      1,   0,   0,   0,  13,   0, 
+      0,   0,   3,   1,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+      1,   0,   0,   0,  66, 105, 
+    108, 105, 110, 101,  97, 114, 
+     83,  97, 109, 112,   0,  67, 
+     97, 109, 101, 114,  97,  84, 
+    101, 120,   0,  66, 108, 117, 
+    114,  84, 101, 120,   0,  77, 
+     97, 115, 107,  84, 101, 120, 
+      0,  67, 111, 109, 112, 111, 
+    115, 105, 116, 101,  67, 111, 
+    110, 115, 116,  97, 110, 116, 
+    115,   0, 171, 171,   3,   1, 
+      0,   0,   9,   0,   0,   0, 
+     48,   1,   0,   0,  48,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0, 152,   2, 
+      0,   0,   0,   0,   0,   0, 
+      8,   0,   0,   0,   2,   0, 
+      0,   0, 172,   2,   0,   0, 
+      0,   0,   0,   0, 255, 255, 
+    255, 255,   0,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0, 208,   2,   0,   0, 
+      8,   0,   0,   0,   8,   0, 
+      0,   0,   2,   0,   0,   0, 
+    172,   2,   0,   0,   0,   0, 
+      0,   0, 255, 255, 255, 255, 
+      0,   0,   0,   0, 255, 255, 
+    255, 255,   0,   0,   0,   0, 
+    218,   2,   0,   0,  16,   0, 
+      0,   0,   4,   0,   0,   0, 
+      2,   0,   0,   0, 232,   2, 
+      0,   0,   0,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0, 255, 255, 255, 255, 
+      0,   0,   0,   0,  12,   3, 
+      0,   0,  20,   0,   0,   0, 
+      4,   0,   0,   0,   2,   0, 
+      0,   0, 232,   2,   0,   0, 
+      0,   0,   0,   0, 255, 255, 
+    255, 255,   0,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0,  25,   3,   0,   0, 
+     24,   0,   0,   0,   4,   0, 
+      0,   0,   2,   0,   0,   0, 
+    232,   2,   0,   0,   0,   0, 
+      0,   0, 255, 255, 255, 255, 
+      0,   0,   0,   0, 255, 255, 
+    255, 255,   0,   0,   0,   0, 
+     33,   3,   0,   0,  28,   0, 
+      0,   0,   4,   0,   0,   0, 
+      2,   0,   0,   0, 232,   2, 
+      0,   0,   0,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0, 255, 255, 255, 255, 
+      0,   0,   0,   0,  41,   3, 
+      0,   0,  32,   0,   0,   0, 
+      4,   0,   0,   0,   2,   0, 
+      0,   0,  60,   3,   0,   0, 
+      0,   0,   0,   0, 255, 255, 
+    255, 255,   0,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0,  96,   3,   0,   0, 
+     36,   0,   0,   0,   4,   0, 
+      0,   0,   2,   0,   0,   0, 
+     60,   3,   0,   0,   0,   0, 
+      0,   0, 255, 255, 255, 255, 
+      0,   0,   0,   0, 255, 255, 
+    255, 255,   0,   0,   0,   0, 
+    104,   3,   0,   0,  40,   0, 
+      0,   0,   8,   0,   0,   0, 
+      0,   0,   0,   0, 172,   2, 
+      0,   0,   0,   0,   0,   0, 
+    255, 255, 255, 255,   0,   0, 
+      0,   0, 255, 255, 255, 255, 
+      0,   0,   0,   0,  67, 114, 
+    111, 112,  79, 102, 102, 115, 
+    101, 116,   0, 102, 108, 111, 
+     97, 116,  50,   0, 171, 171, 
+      1,   0,   3,   0,   1,   0, 
+      2,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0, 163,   2,   0,   0, 
+     67, 114, 111, 112,  83,  99, 
+     97, 108, 101,   0,  71,  97, 
+    109, 109,  97,   0, 102, 108, 
+    111,  97, 116,   0, 171, 171, 
+      0,   0,   3,   0,   1,   0, 
+      1,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0, 224,   2,   0,   0, 
+     67, 111, 114, 110, 101, 114, 
+     82,  97, 100, 105, 117, 115, 
+      0,  79, 117, 116, 112, 117, 
+    116,  87,   0,  79, 117, 116, 
+    112, 117, 116,  72,   0,  83, 
+    104,  97, 112, 101,  84, 121, 
+    112, 101,   0, 100, 119, 111, 
+    114, 100,   0, 171, 171, 171, 
+      0,   0,  19,   0,   1,   0, 
+      1,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,  51,   3,   0,   0, 
+     72,  97, 115,  77,  97, 115, 
+    107,   0,  80,  97, 100,   0, 
+     77, 105,  99, 114, 111, 115, 
+    111, 102, 116,  32,  40,  82, 
+     41,  32,  72,  76,  83,  76, 
+     32,  83, 104,  97, 100, 101, 
+    114,  32,  67, 111, 109, 112, 
+    105, 108, 101, 114,  32,  49, 
+     48,  46,  49,   0,  73,  83, 
+     71,  78,  80,   0,   0,   0, 
+      2,   0,   0,   0,   8,   0, 
+      0,   0,  56,   0,   0,   0, 
+      0,   0,   0,   0,   1,   0, 
+      0,   0,   3,   0,   0,   0, 
+      0,   0,   0,   0,  15,   0, 
+      0,   0,  68,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   3,   0,   0,   0, 
+      1,   0,   0,   0,   3,   3, 
+      0,   0,  83,  86,  95,  80, 
+     79,  83,  73,  84,  73,  79, 
+     78,   0,  84,  69,  88,  67, 
+     79,  79,  82,  68,   0, 171, 
+    171, 171,  79,  83,  71,  78, 
+     44,   0,   0,   0,   1,   0, 
+      0,   0,   8,   0,   0,   0, 
+     32,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      3,   0,   0,   0,   0,   0, 
+      0,   0,  15,   0,   0,   0, 
+     83,  86,  95,  84,  65,  82, 
+     71,  69,  84,   0, 171, 171, 
+     83,  72,  69,  88, 108,   6, 
+      0,   0,  80,   0,   0,   0, 
+    155,   1,   0,   0, 106,   8, 
+      0,   1,  89,   0,   0,   4, 
+     70, 142,  32,   0,   0,   0, 
+      0,   0,   3,   0,   0,   0, 
+     90,   0,   0,   3,   0,  96, 
+     16,   0,   0,   0,   0,   0, 
+     88,  24,   0,   4,   0, 112, 
+     16,   0,   0,   0,   0,   0, 
+     85,  85,   0,   0,  88,  24, 
+      0,   4,   0, 112,  16,   0, 
+      1,   0,   0,   0,  85,  85, 
+      0,   0,  88,  24,   0,   4, 
+      0, 112,  16,   0,   2,   0, 
+      0,   0,  85,  85,   0,   0, 
+     98,  16,   0,   3,  50,  16, 
+     16,   0,   1,   0,   0,   0, 
+    101,   0,   0,   3, 242,  32, 
+     16,   0,   0,   0,   0,   0, 
+    104,   0,   0,   2,   4,   0, 
+      0,   0,  56,   0,   0,   8, 
+     50,   0,  16,   0,   0,   0, 
+      0,   0,  70,  16,  16,   0, 
+      1,   0,   0,   0, 230, 138, 
+     32,   0,   0,   0,   0,   0, 
+      1,   0,   0,   0,  32,   0, 
+      0,   8,  66,   0,  16,   0, 
+      0,   0,   0,   0,  10, 128, 
+     32,   0,   0,   0,   0,   0, 
+      2,   0,   0,   0,   1,  64, 
+      0,   0,   3,   0,   0,   0, 
+     31,   0,   4,   3,  42,   0, 
+     16,   0,   0,   0,   0,   0, 
+     56,   0,   0,  11, 194,   0, 
+     16,   0,   0,   0,   0,   0, 
+    166, 142,  32,   0,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+      2,  64,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,  63,   0,   0, 
+      0,  63,  51,   0,   0,   7, 
+     18,   0,  16,   0,   1,   0, 
+      0,   0,  58,   0,  16,   0, 
+      0,   0,   0,   0,  42,   0, 
+     16,   0,   0,   0,   0,   0, 
+     50,   0,   0,  11, 194,   0, 
+     16,   0,   0,   0,   0,   0, 
+      6,  20,  16,   0,   1,   0, 
+      0,   0, 166, 142,  32,   0, 
+      0,   0,   0,   0,   1,   0, 
+      0,   0, 166,  14,  16, 128, 
+     65,   0,   0,   0,   0,   0, 
+      0,   0,  14,   0,   0,   7, 
+    194,   0,  16,   0,   0,   0, 
+      0,   0, 166,  14,  16,   0, 
+      0,   0,   0,   0,   6,   0, 
+     16,   0,   1,   0,   0,   0, 
+     56,   0,   0,   7, 194,   0, 
+     16,   0,   0,   0,   0,   0, 
+    166,  14,  16,   0,   0,   0, 
+      0,   0, 166,  14,  16,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   7,  66,   0,  16,   0, 
+      0,   0,   0,   0,  58,   0, 
+     16,   0,   0,   0,   0,   0, 
+     42,   0,  16,   0,   0,   0, 
+      0,   0,  49,   0,   0,   7, 
+     66,   0,  16,   0,   0,   0, 
+      0,   0,   1,  64,   0,   0, 
+      0,   0, 128,  63,  42,   0, 
+     16,   0,   0,   0,   0,   0, 
+     31,   0,   4,   3,  42,   0, 
+     16,   0,   0,   0,   0,   0, 
+     54,   0,   0,   8, 242,  32, 
+     16,   0,   0,   0,   0,   0, 
+      2,  64,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,  62,   0,   0,   1, 
+     21,   0,   0,   1,  18,   0, 
+      0,   1,  80,   0,   0,   8, 
+     66,   0,  16,   0,   0,   0, 
+      0,   0,  10, 128,  32,   0, 
+      0,   0,   0,   0,   2,   0, 
+      0,   0,   1,  64,   0,   0, 
+      1,   0,   0,   0,  31,   0, 
+      4,   3,  42,   0,  16,   0, 
+      0,   0,   0,   0,  49,   0, 
+      0,   8, 194,   0,  16,   0, 
+      0,   0,   0,   0,  86,   1, 
+     16,   0,   0,   0,   0,   0, 
+     86, 133,  32,   0,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+      1,   0,   0,   7,  18,   0, 
+     16,   0,   1,   0,   0,   0, 
+     42,   0,  16,   0,   0,   0, 
+      0,   0,  58,   0,  16,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,  10,  50,   0,  16,   0, 
+      2,   0,   0,   0,  86, 133, 
+     32, 128,  65,   0,   0,   0, 
+      0,   0,   0,   0,   1,   0, 
+      0,   0, 230, 138,  32,   0, 
+      0,   0,   0,   0,   1,   0, 
+      0,   0,  49,   0,   0,   7, 
+     50,   0,  16,   0,   0,   0, 
+      0,   0,  70,   0,  16,   0, 
+      2,   0,   0,   0,  70,   0, 
+     16,   0,   0,   0,   0,   0, 
+      1,   0,   0,   7, 194,   0, 
+     16,   0,   0,   0,   0,   0, 
+    166,  14,  16,   0,   0,   0, 
+      0,   0,   6,   4,  16,   0, 
+      0,   0,   0,   0,   1,   0, 
+      0,   7,  66,   0,  16,   0, 
+      3,   0,   0,   0,  26,   0, 
+     16,   0,   0,   0,   0,   0, 
+     10,   0,  16,   0,   0,   0, 
+      0,   0,   1,   0,   0,   7, 
+     50,   0,  16,   0,   3,   0, 
+      0,   0,  70,   0,  16,   0, 
+      2,   0,   0,   0, 166,  10, 
+     16,   0,   3,   0,   0,   0, 
+     54,   0,   0,   6,  66,   0, 
+     16,   0,   2,   0,   0,   0, 
+     26, 128,  32,   0,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+     54,   0,   0,   5, 130,   0, 
+     16,   0,   2,   0,   0,   0, 
+      1,  64,   0,   0, 255, 255, 
+    255, 255,  55,   0,   0,   9, 
+    178,   0,  16,   0,   0,   0, 
+      0,   0, 246,  15,  16,   0, 
+      0,   0,   0,   0, 102,  14, 
+     16,   0,   2,   0,   0,   0, 
+     70,   8,  16,   0,   3,   0, 
+      0,   0,  55,   0,   0,   9, 
+    114,   0,  16,   0,   0,   0, 
+      0,   0, 166,  10,  16,   0, 
+      0,   0,   0,   0, 134,   3, 
+     16,   0,   2,   0,   0,   0, 
+     70,   3,  16,   0,   0,   0, 
+      0,   0,  55,   0,   0,   9, 
+    114,   0,  16,   0,   0,   0, 
+      0,   0,   6,   0,  16,   0, 
+      1,   0,   0,   0, 166,  11, 
+     16,   0,   2,   0,   0,   0, 
+     70,   2,  16,   0,   0,   0, 
+      0,   0,  31,   0,   4,   3, 
+     42,   0,  16,   0,   0,   0, 
+      0,   0,  50,   0,   0,  11, 
+     50,   0,  16,   0,   0,   0, 
+      0,   0,  70,  16,  16,   0, 
+      1,   0,   0,   0, 230, 138, 
+     32,   0,   0,   0,   0,   0, 
+      1,   0,   0,   0,  70,   0, 
+     16, 128,  65,   0,   0,   0, 
+      0,   0,   0,   0,  56,   0, 
+      0,   7,  50,   0,  16,   0, 
+      0,   0,   0,   0,  70,   0, 
+     16,   0,   0,   0,   0,   0, 
+     70,   0,  16,   0,   0,   0, 
+      0,   0,   0,   0,   0,   7, 
+     18,   0,  16,   0,   0,   0, 
+      0,   0,  26,   0,  16,   0, 
+      0,   0,   0,   0,  10,   0, 
+     16,   0,   0,   0,   0,   0, 
+     56,   0,   0,   9,  34,   0, 
+     16,   0,   0,   0,   0,   0, 
+     26, 128,  32,   0,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+     26, 128,  32,   0,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+     49,   0,   0,   7,  18,   0, 
+     16,   0,   0,   0,   0,   0, 
+     26,   0,  16,   0,   0,   0, 
+      0,   0,  10,   0,  16,   0, 
+      0,   0,   0,   0,  31,   0, 
+      4,   3,  10,   0,  16,   0, 
+      0,   0,   0,   0,  54,   0, 
+      0,   8, 242,  32,  16,   0, 
+      0,   0,   0,   0,   2,  64, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+     62,   0,   0,   1,  21,   0, 
+      0,   1,  21,   0,   0,   1, 
+     21,   0,   0,   1,  21,   0, 
+      0,   1,  31,   0,   4,   4, 
+     26, 128,  32,   0,   0,   0, 
+      0,   0,   2,   0,   0,   0, 
+     69,   0,   0, 139, 194,   0, 
+      0, 128,  67,  85,  21,   0, 
+     18,   0,  16,   0,   0,   0, 
+      0,   0,  70,  16,  16,   0, 
+      1,   0,   0,   0,  70, 126, 
+     16,   0,   2,   0,   0,   0, 
+      0,  96,  16,   0,   0,   0, 
+      0,   0,  54,  32,   0,   5, 
+     18,   0,  16,   0,   0,   0, 
+      0,   0,  10,   0,  16,   0, 
+      0,   0,   0,   0,  50,   0, 
+      0,  11,  98,   0,  16,   0, 
+      0,   0,   0,   0,   6,  17, 
+     16,   0,   1,   0,   0,   0, 
+    166, 139,  32,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      6, 129,  32,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+     69,   0,   0, 139, 194,   0, 
+      0, 128,  67,  85,  21,   0, 
+    226,   0,  16,   0,   0,   0, 
+      0,   0, 150,   5,  16,   0, 
+      0,   0,   0,   0,  54, 121, 
+     16,   0,   0,   0,   0,   0, 
+      0,  96,  16,   0,   0,   0, 
+      0,   0,  52,   0,   0,  10, 
+    226,   0,  16,   0,   0,   0, 
+      0,   0,  86,  14,  16,   0, 
+      0,   0,   0,   0,   2,  64, 
+      0,   0,   0,   0,   0,   0, 
+    111,  18, 131,  58, 111,  18, 
+    131,  58, 111,  18, 131,  58, 
+     47,   0,   0,   5, 226,   0, 
+     16,   0,   0,   0,   0,   0, 
+     86,  14,  16,   0,   0,   0, 
+      0,   0,  56,   0,   0,   8, 
+    226,   0,  16,   0,   0,   0, 
+      0,   0,  86,  14,  16,   0, 
+      0,   0,   0,   0,   6, 128, 
+     32,   0,   0,   0,   0,   0, 
+      1,   0,   0,   0,  25,   0, 
+      0,   5, 226,   0,  16,   0, 
+      0,   0,   0,   0,  86,  14, 
+     16,   0,   0,   0,   0,   0, 
+     69,   0,   0, 139, 194,   0, 
+      0, 128,  67,  85,  21,   0, 
+    114,   0,  16,   0,   1,   0, 
+      0,   0,  70,  16,  16,   0, 
+      1,   0,   0,   0,  70, 126, 
+     16,   0,   1,   0,   0,   0, 
+      0,  96,  16,   0,   0,   0, 
+      0,   0,   0,   0,   0,   8, 
+    226,   0,  16,   0,   0,   0, 
+      0,   0,  86,  14,  16,   0, 
+      0,   0,   0,   0,   6,   9, 
+     16, 128,  65,   0,   0,   0, 
+      1,   0,   0,   0,  50,   0, 
+      0,   9, 114,  32,  16,   0, 
+      0,   0,   0,   0,   6,   0, 
+     16,   0,   0,   0,   0,   0, 
+    150,   7,  16,   0,   0,   0, 
+      0,   0,  70,   2,  16,   0, 
+      1,   0,   0,   0,  54,   0, 
+      0,   5, 130,  32,  16,   0, 
+      0,   0,   0,   0,   1,  64, 
+      0,   0,   0,   0, 128,  63, 
+     62,   0,   0,   1,  18,   0, 
+      0,   1,  69,   0,   0, 139, 
+    194,   0,   0, 128,  67,  85, 
+     21,   0, 114,   0,  16,   0, 
+      0,   0,   0,   0,  70,  16, 
+     16,   0,   1,   0,   0,   0, 
+     70, 126,  16,   0,   1,   0, 
+      0,   0,   0,  96,  16,   0, 
+      0,   0,   0,   0,  54,   0, 
+      0,   5, 114,  32,  16,   0, 
+      0,   0,   0,   0,  70,   2, 
+     16,   0,   0,   0,   0,   0, 
+     54,   0,   0,   5, 130,  32, 
+     16,   0,   0,   0,   0,   0, 
+      1,  64,   0,   0,   0,   0, 
+    128,  63,  62,   0,   0,   1, 
+     21,   0,   0,   1,  62,   0, 
+      0,   1,  83,  84,  65,  84, 
+    148,   0,   0,   0,  63,   0, 
+      0,   0,   4,   0,   0,   0, 
+      0,   0,   0,   0,   2,   0, 
+      0,   0,  23,   0,   0,   0, 
+      1,   0,   0,   0,   5,   0, 
+      0,   0,   7,   0,   0,   0, 
+      5,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      4,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   8,   0,   0,   0, 
+      3,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0
+};

src/modules/ZoomIt/ZoomIt/WebcamCompositeVS.h

@@ -0,0 +1,162 @@
+#if 0
+//
+// Generated by Microsoft (R) HLSL Shader Compiler 10.1
+//
+//
+//
+// Input signature:
+//
+// Name                 Index   Mask Register SysValue  Format   Used
+// -------------------- ----- ------ -------- -------- ------- ------
+// SV_VertexID              0   x           0   VERTID    uint   x   
+//
+//
+// Output signature:
+//
+// Name                 Index   Mask Register SysValue  Format   Used
+// -------------------- ----- ------ -------- -------- ------- ------
+// SV_POSITION              0   xyzw        0      POS   float   xyzw
+// TEXCOORD                 0   xy          1     NONE   float   xy  
+//
+vs_5_0
+dcl_globalFlags refactoringAllowed
+dcl_input_sgv v0.x, vertex_id
+dcl_output_siv o0.xyzw, position
+dcl_output o1.xy
+dcl_temps 1
+bfi r0.x, l(1), l(1), v0.x, l(0)
+and r0.z, v0.x, l(2)
+utof r0.xy, r0.xzxx
+mad o0.xy, r0.xyxx, l(2.000000, -2.000000, 0.000000, 0.000000), l(-1.000000, 1.000000, 0.000000, 0.000000)
+mov o1.xy, r0.xyxx
+mov o0.zw, l(0,0,0,1.000000)
+ret 
+// Approximately 7 instruction slots used
+#endif
+
+const BYTE g_WebcamCompositeVS[] =
+{
+     68,  88,  66,  67,  94, 195, 
+    253,  40, 165, 172,  45,  84, 
+     30, 136,  47,  40, 247, 112, 
+     58,  27,   1,   0,   0,   0, 
+    224,   2,   0,   0,   5,   0, 
+      0,   0,  52,   0,   0,   0, 
+    160,   0,   0,   0, 212,   0, 
+      0,   0,  44,   1,   0,   0, 
+     68,   2,   0,   0,  82,  68, 
+     69,  70, 100,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+     60,   0,   0,   0,   0,   5, 
+    254, 255,   0,   1,   0,   0, 
+     60,   0,   0,   0,  82,  68, 
+     49,  49,  60,   0,   0,   0, 
+     24,   0,   0,   0,  32,   0, 
+      0,   0,  40,   0,   0,   0, 
+     36,   0,   0,   0,  12,   0, 
+      0,   0,   0,   0,   0,   0, 
+     77, 105,  99, 114, 111, 115, 
+    111, 102, 116,  32,  40,  82, 
+     41,  32,  72,  76,  83,  76, 
+     32,  83, 104,  97, 100, 101, 
+    114,  32,  67, 111, 109, 112, 
+    105, 108, 101, 114,  32,  49, 
+     48,  46,  49,   0,  73,  83, 
+     71,  78,  44,   0,   0,   0, 
+      1,   0,   0,   0,   8,   0, 
+      0,   0,  32,   0,   0,   0, 
+      0,   0,   0,   0,   6,   0, 
+      0,   0,   1,   0,   0,   0, 
+      0,   0,   0,   0,   1,   1, 
+      0,   0,  83,  86,  95,  86, 
+    101, 114, 116, 101, 120,  73, 
+     68,   0,  79,  83,  71,  78, 
+     80,   0,   0,   0,   2,   0, 
+      0,   0,   8,   0,   0,   0, 
+     56,   0,   0,   0,   0,   0, 
+      0,   0,   1,   0,   0,   0, 
+      3,   0,   0,   0,   0,   0, 
+      0,   0,  15,   0,   0,   0, 
+     68,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      3,   0,   0,   0,   1,   0, 
+      0,   0,   3,  12,   0,   0, 
+     83,  86,  95,  80,  79,  83, 
+     73,  84,  73,  79,  78,   0, 
+     84,  69,  88,  67,  79,  79, 
+     82,  68,   0, 171, 171, 171, 
+     83,  72,  69,  88,  16,   1, 
+      0,   0,  80,   0,   1,   0, 
+     68,   0,   0,   0, 106,   8, 
+      0,   1,  96,   0,   0,   4, 
+     18,  16,  16,   0,   0,   0, 
+      0,   0,   6,   0,   0,   0, 
+    103,   0,   0,   4, 242,  32, 
+     16,   0,   0,   0,   0,   0, 
+      1,   0,   0,   0, 101,   0, 
+      0,   3,  50,  32,  16,   0, 
+      1,   0,   0,   0, 104,   0, 
+      0,   2,   1,   0,   0,   0, 
+    140,   0,   0,  11,  18,   0, 
+     16,   0,   0,   0,   0,   0, 
+      1,  64,   0,   0,   1,   0, 
+      0,   0,   1,  64,   0,   0, 
+      1,   0,   0,   0,  10,  16, 
+     16,   0,   0,   0,   0,   0, 
+      1,  64,   0,   0,   0,   0, 
+      0,   0,   1,   0,   0,   7, 
+     66,   0,  16,   0,   0,   0, 
+      0,   0,  10,  16,  16,   0, 
+      0,   0,   0,   0,   1,  64, 
+      0,   0,   2,   0,   0,   0, 
+     86,   0,   0,   5,  50,   0, 
+     16,   0,   0,   0,   0,   0, 
+    134,   0,  16,   0,   0,   0, 
+      0,   0,  50,   0,   0,  15, 
+     50,  32,  16,   0,   0,   0, 
+      0,   0,  70,   0,  16,   0, 
+      0,   0,   0,   0,   2,  64, 
+      0,   0,   0,   0,   0,  64, 
+      0,   0,   0, 192,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      2,  64,   0,   0,   0,   0, 
+    128, 191,   0,   0, 128,  63, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,  54,   0,   0,   5, 
+     50,  32,  16,   0,   1,   0, 
+      0,   0,  70,   0,  16,   0, 
+      0,   0,   0,   0,  54,   0, 
+      0,   8, 194,  32,  16,   0, 
+      0,   0,   0,   0,   2,  64, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0, 128,  63, 
+     62,   0,   0,   1,  83,  84, 
+     65,  84, 148,   0,   0,   0, 
+      7,   0,   0,   0,   1,   0, 
+      0,   0,   0,   0,   0,   0, 
+      3,   0,   0,   0,   1,   0, 
+      0,   0,   0,   0,   0,   0, 
+      1,   0,   0,   0,   1,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   2,   0, 
+      0,   0,   0,   0,   0,   0, 
+      1,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0,   0,   0, 
+      0,   0,   0,   0
+};

src/modules/ZoomIt/ZoomIt/ZoomIt.rc

@@ -121,7 +121,7 @@ FONT 8, "MS Shell Dlg", 0, 0, 0x0
 BEGIN
     DEFPUSHBUTTON   "OK",IDOK,184,308,50,14
     PUSHBUTTON      "Cancel",IDCANCEL,241,308,50,14
-    LTEXT           "ZoomIt v12.0",IDC_VERSION,42,7,73,10
+    LTEXT           "ZoomIt v12.1",IDC_VERSION,42,7,73,10
     LTEXT           "Copyright \251 2006-2026 Mark Russinovich",IDC_COPYRIGHT,42,17,251,8
     CONTROL         "<a HREF=""https://www.sysinternals.com"">Sysinternals - www.sysinternals.com</a>",IDC_LINK,
                     "SysLink",WS_TABSTOP,42,26,150,9
@@ -267,33 +267,52 @@ RECORD DIALOGEX 0, 0, 263, 228
 STYLE DS_SETFONT | DS_FIXEDSYS | DS_CONTROL | WS_CHILD | WS_SYSMENU
 FONT 8, "MS Shell Dlg", 400, 0, 0x1
 BEGIN
-    CONTROL         "",IDC_RECORD_HOTKEY,"msctls_hotkey32",WS_BORDER | WS_TABSTOP,61,71,80,12
-    LTEXT           "Record Toggle:",IDC_STATIC,7,73,54,8
+    CONTROL         "",IDC_RECORD_HOTKEY,"msctls_hotkey32",WS_BORDER | WS_TABSTOP,65,59,80,12
+    RTEXT           "Record Toggle:",IDC_STATIC,7,62,54,8
     LTEXT           "Record video of the unzoomed live screen or a static zoomed session by entering the recording hot key and finish the recording by entering it again. ",IDC_STATIC,7,7,248,22
-    LTEXT           "Scaling:",IDC_STATIC,30,90,26,8
-    COMBOBOX        IDC_RECORD_SCALING,61,89,26,30,CBS_DROPDOWNLIST | CBS_AUTOHSCROLL | CBS_OEMCONVERT | CBS_SORT | WS_VSCROLL | WS_TABSTOP
-    CONTROL         "16:9:",IDC_RECORD_ASPECT_RATIO,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | WS_TABSTOP,93,90,30,10
-    LTEXT           "Format:",IDC_STATIC,30,108,26,8
-    COMBOBOX        IDC_RECORD_FORMAT,61,106,60,30,CBS_DROPDOWNLIST | CBS_AUTOHSCROLL | CBS_OEMCONVERT | WS_VSCROLL | WS_TABSTOP
-    LTEXT           "Frame Rate:",IDC_STATIC,135,90,44,8,NOT WS_VISIBLE
-    COMBOBOX        IDC_RECORD_FRAME_RATE,182,89,42,30,CBS_DROPDOWNLIST | CBS_AUTOHSCROLL | CBS_OEMCONVERT | CBS_SORT | NOT WS_VISIBLE | WS_VSCROLL | WS_TABSTOP
-    LTEXT           "To crop the portion of the screen that will be recorded, enter the hotkey with the Shift key in the opposite mode. ",IDC_STATIC,7,29,245,18
-    LTEXT           "To record a specific window, enter the hotkey with the Alt key in the opposite mode.",IDC_STATIC,7,48,251,19
-    CONTROL         "Capture &system audio",IDC_CAPTURE_SYSTEM_AUDIO,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | WS_TABSTOP,7,124,86,10
-    CONTROL         "&Capture audio input:",IDC_CAPTURE_AUDIO,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | WS_TABSTOP,125,124,83,10
-    COMBOBOX        IDC_MICROPHONE,81,137,128,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
-    LTEXT           "Microphone:",IDC_MICROPHONE_LABEL,34,139,47,8
+    RTEXT           "Scaling:",IDC_STATIC,36,79,26,8
+    COMBOBOX        IDC_RECORD_SCALING,65,78,26,30,CBS_DROPDOWNLIST | CBS_AUTOHSCROLL | CBS_OEMCONVERT | CBS_SORT | WS_VSCROLL | WS_TABSTOP
+    CONTROL         "16:9:",IDC_RECORD_ASPECT_RATIO,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | WS_TABSTOP,94,79,30,10
+    RTEXT           "Format:",IDC_STATIC,36,97,26,8
+    COMBOBOX        IDC_RECORD_FORMAT,65,96,60,30,CBS_DROPDOWNLIST | CBS_AUTOHSCROLL | CBS_OEMCONVERT | WS_VSCROLL | WS_TABSTOP
+    LTEXT           "Frame Rate:",IDC_STATIC,134,79,44,8,NOT WS_VISIBLE
+    COMBOBOX        IDC_RECORD_FRAME_RATE,177,78,42,30,CBS_DROPDOWNLIST | CBS_AUTOHSCROLL | CBS_OEMCONVERT | CBS_SORT | NOT WS_VISIBLE | WS_VSCROLL | WS_TABSTOP
+    LTEXT           "To crop the portion of the screen that will be recorded, enter the hotkey with the Shift key in the opposite mode. ",IDC_STATIC,7,7,245,18
+    LTEXT           "To record a specific window, enter the hotkey with the Alt key in the opposite mode.",IDC_STATIC,7,38,251,19
+    CONTROL         "Capture &system audio:",IDC_CAPTURE_SYSTEM_AUDIO,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | BS_RIGHT | WS_TABSTOP,7,115,90,10
+    CONTROL         "&Capture audio input:",IDC_CAPTURE_AUDIO,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | BS_RIGHT | WS_TABSTOP,11,133,86,10
+    CONTROL         "Mono:",IDC_MIC_MONO_MIX,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | BS_RIGHT | WS_TABSTOP,108,147,48,10
+    COMBOBOX        IDC_MICROPHONE,52,162,208,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
+    LTEXT           "Microphone:",IDC_MICROPHONE_LABEL,7,163,42,8
+    CONTROL         "&Noise cancellation:",IDC_NOISE_CANCELLATION,"Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | BS_RIGHT | WS_TABSTOP,23,147,74,10
     CONTROL         "Show &webcam overlay (Ctrl+C toggles)",IDC_WEBCAM_OVERLAY,
-                    "Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | WS_TABSTOP,7,153,148,10
-    LTEXT           "Camera:",IDC_WEBCAM_DEVICE_LABEL,46,167,28,8
-    COMBOBOX        IDC_WEBCAM_DEVICE,82,165,127,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
-    LTEXT           "Position:",IDC_WEBCAM_POSITION_LABEL,33,185,32,8
-    COMBOBOX        IDC_WEBCAM_POSITION,64,183,55,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
-    LTEXT           "Size:",IDC_WEBCAM_SIZE_LABEL,137,185,20,8
-    COMBOBOX        IDC_WEBCAM_SIZE,159,183,50,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
-    LTEXT           "Shape:",IDC_WEBCAM_SHAPE_LABEL,33,201,24,8
-    COMBOBOX        IDC_WEBCAM_SHAPE,64,199,80,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
-    PUSHBUTTON      "&Trim",IDC_TRIM_FILE,207,207,53,14
+                    "Button",BS_AUTOCHECKBOX | BS_LEFTTEXT | WS_TABSTOP,7,181,148,10
+    PUSHBUTTON      "Webcam S&ettings...",IDC_WEBCAM_SETTINGS,192,180,68,14
+    PUSHBUTTON      "&Trim",IDC_TRIM_FILE,207,209,53,14
+END
+
+WEBCAM_SETTINGS DIALOGEX 0, 0, 220, 163
+STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | DS_CENTER | WS_POPUP | WS_CAPTION | WS_SYSMENU
+CAPTION "Webcam Settings"
+FONT 8, "MS Shell Dlg", 400, 0, 0x1
+BEGIN
+    LTEXT           "Camera:",IDC_WEBCAM_DEVICE_LABEL,14,10,28,8
+    COMBOBOX        IDC_WEBCAM_DEVICE,50,8,158,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
+    LTEXT           "Position:",IDC_WEBCAM_POSITION_LABEL,14,28,32,8
+    COMBOBOX        IDC_WEBCAM_POSITION,50,26,65,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
+    LTEXT           "Size:",IDC_WEBCAM_SIZE_LABEL,125,28,20,8
+    COMBOBOX        IDC_WEBCAM_SIZE,148,26,60,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
+    LTEXT           "Shape:",IDC_WEBCAM_SHAPE_LABEL,14,46,24,8
+    COMBOBOX        IDC_WEBCAM_SHAPE,50,44,80,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
+    LTEXT           "Background:",IDC_WEBCAM_BG_LABEL,14,64,44,8
+    COMBOBOX        IDC_WEBCAM_BG_MODE,60,62,55,30,CBS_DROPDOWNLIST | WS_VSCROLL | WS_TABSTOP
+    EDITTEXT        IDC_WEBCAM_BG_IMAGE,117,62,83,12,ES_AUTOHSCROLL | ES_READONLY
+    PUSHBUTTON      "...",IDC_WEBCAM_BG_BROWSE,202,62,14,12
+    LTEXT           "Brightness:",IDC_WEBCAM_BRIGHTNESS_LABEL,14,82,44,8
+    CONTROL         "",IDC_WEBCAM_BRIGHTNESS_SLIDER,"msctls_trackbar32",TBS_AUTOTICKS | TBS_NOTICKS | TBS_TOOLTIPS | WS_TABSTOP,60,80,148,15
+    LTEXT           "Uses MediaPipe SelfieSegmentation (Apache 2.0)",IDC_THIRDPARTY_NOTICES,14,102,200,8
+    DEFPUSHBUTTON   "OK",IDOK,108,142,50,14
+    PUSHBUTTON      "Cancel",IDCANCEL,162,142,50,14
 END
 
 SNIP DIALOGEX 0, 0, 260, 80

src/modules/ZoomIt/ZoomIt/ZoomIt.vcxproj

@@ -90,7 +90,7 @@
       <AdditionalIncludeDirectories>$(MSBuildThisFileDirectory)..\..\..\common\version;$(MSBuildThisFileDirectory)PowerToys;$(InterPlatformDir)</AdditionalIncludeDirectories>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;windowscodecs.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Windows</SubSystem>
       <RandomizedBaseAddress>true</RandomizedBaseAddress>
@@ -112,7 +112,7 @@
       <AdditionalIncludeDirectories>$(MSBuildThisFileDirectory)..\..\..\common\version;$(MSBuildThisFileDirectory)PowerToys;$(MSBuildThisFileDirectory)..\ZoomItBreak\$(Platform)\$(Configuration)\</AdditionalIncludeDirectories>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;windowscodecs.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Windows</SubSystem>
       <RandomizedBaseAddress>true</RandomizedBaseAddress>
@@ -135,7 +135,7 @@
       <AdditionalIncludeDirectories>$(MSBuildThisFileDirectory)..\..\..\common\version;$(MSBuildThisFileDirectory)PowerToys;$(MSBuildThisFileDirectory)..\ZoomItBreak\$(Platform)\$(Configuration)\</AdditionalIncludeDirectories>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;windowscodecs.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Windows</SubSystem>
       <FixedBaseAddress>
@@ -156,7 +156,7 @@
       <AdditionalIncludeDirectories>$(MSBuildThisFileDirectory)..\..\..\common\version;$(MSBuildThisFileDirectory)PowerToys;$(InterPlatformDir)</AdditionalIncludeDirectories>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;windowscodecs.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Windows</SubSystem>
       <RandomizedBaseAddress>false</RandomizedBaseAddress>
@@ -177,7 +177,7 @@
       <AdditionalIncludeDirectories>$(MSBuildThisFileDirectory)..\..\..\common\version;$(MSBuildThisFileDirectory)PowerToys;$(MSBuildThisFileDirectory)..\ZoomItBreak\$(Platform)\$(Configuration)\</AdditionalIncludeDirectories>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;windowscodecs.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <UACUIAccess>true</UACUIAccess>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Windows</SubSystem>
@@ -199,7 +199,7 @@
       <AdditionalIncludeDirectories>$(MSBuildThisFileDirectory)..\..\..\common\version;$(MSBuildThisFileDirectory)PowerToys;$(MSBuildThisFileDirectory)..\ZoomItBreak\$(Platform)\$(Configuration)\</AdditionalIncludeDirectories>
     </ResourceCompile>
     <Link>
-      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>Shlwapi.lib;comctl32.lib;odbc32.lib;odbccp32.lib;version.lib;Winmm.lib;gdiplus.lib;Msimg32.lib;Wtsapi32.lib;windowscodecs.lib;%(AdditionalDependencies)</AdditionalDependencies>
       <UACUIAccess>true</UACUIAccess>
       <GenerateDebugInformation>true</GenerateDebugInformation>
       <SubSystem>Windows</SubSystem>
@@ -257,6 +257,7 @@
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
     </ClCompile>
     <ClCompile Include="GifRecordingSession.cpp" />
+    <ClCompile Include="NoiseSuppressor.cpp" />
     <ClCompile Include="PanoramaCapture.cpp">
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Use</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">Use</PrecompiledHeader>
@@ -266,6 +267,128 @@
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Use</PrecompiledHeader>
     </ClCompile>
     <ClCompile Include="pch.cpp" />
+    <ClCompile Include="rnnoise\celt_lpc.c">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
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+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">26451;4100;4091;4245</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">26451;4100;4091;4245</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">26451;4100;4091;4245</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">26451;4100;4091;4245</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|x64'">26451;4100;4091;4245</DisableSpecificWarnings>
+    </ClCompile>
+    <ClCompile Include="rnnoise\denoise.c">
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">26451;4100;4091;4244;4245;4305</DisableSpecificWarnings>
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+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">NotUsing</PrecompiledHeader>
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+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="rnnoise\kiss_fft.c">
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
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+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
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+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="rnnoise\nnet.c">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
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+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|x64'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
+    </ClCompile>
+    <ClCompile Include="rnnoise\nnet_default.c">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
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+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|x64'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
+    </ClCompile>
+    <ClCompile Include="rnnoise\parse_lpcnet_weights.c">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="rnnoise\pitch.c">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
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+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|x64'">26451;4100;4091;4244;4245</DisableSpecificWarnings>
+    </ClCompile>
+    <ClCompile Include="rnnoise\rnn.c">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="rnnoise\rnnoise_data_little.c">
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">26451;4100;4091;4245;4305</DisableSpecificWarnings>
+      <DisableSpecificWarnings Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">26451;4100;4091;4245;4305</DisableSpecificWarnings>
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+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">NotUsing</PrecompiledHeader>
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+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="rnnoise\rnnoise_tables.c">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">NotUsing</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">NotUsing</PrecompiledHeader>
+    </ClCompile>
     <ClCompile Include="SelectRectangle.cpp">
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Use</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">Use</PrecompiledHeader>
@@ -314,6 +437,14 @@
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Use</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Use</PrecompiledHeader>
     </ClCompile>
+    <ClCompile Include="BackgroundBlur.cpp">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Use</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Use</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">Use</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">Use</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">Use</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|x64'">Use</PrecompiledHeader>
+    </ClCompile>
     <ClCompile Include="WebcamPreviewWindow.cpp">
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Use</PrecompiledHeader>
       <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Use</PrecompiledHeader>
@@ -338,16 +469,21 @@
     <ClInclude Include="$(MSBuildThisFileDirectory)..\..\..\common\sysinternals\Eula\Eula.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)..\ZoomItModuleInterface\Trace.h" />
     <ClInclude Include="GifRecordingSession.h" />
+    <ClInclude Include="NoiseSuppressor.h" />
     <ClInclude Include="PanoramaCapture.h" />
     <ClInclude Include="pch.h" />
     <ClInclude Include="Registry.h" />
     <ClInclude Include="resource.h" />
+    <ClInclude Include="rnnoise\nnet_arch.h" />
+    <ClInclude Include="rnnoise\rnnoise.h" />
+    <ClInclude Include="rnnoise\vec.h" />
     <ClInclude Include="SelectRectangle.h" />
     <ClInclude Include="Utility.h" />
     <ClInclude Include="DemoType.h" />
     <ClInclude Include="VersionHelper.h" />
     <ClInclude Include="VideoRecordingSession.h" />
     <ClInclude Include="WebcamCapture.h" />
+    <ClInclude Include="BackgroundBlur.h" />
     <ClInclude Include="WebcamPreviewWindow.h" />
     <ClInclude Include="ZoomIt.h" />
     <ClInclude Include="ZoomItSettings.h" />

src/modules/ZoomIt/ZoomIt/ZoomIt.vcxproj.filters

@@ -13,6 +13,12 @@
       <UniqueIdentifier>{e1fa606f-a2e6-40c8-8779-8ca1813d9f01}</UniqueIdentifier>
       <Extensions>ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe</Extensions>
     </Filter>
+    <Filter Include="Source Files\rnnoise">
+      <UniqueIdentifier>{c1cc2820-c3a4-413d-b5d8-0d2034de2474}</UniqueIdentifier>
+    </Filter>
+    <Filter Include="Header Files\rnnoise">
+      <UniqueIdentifier>{7795b908-e073-46ed-b209-c07ac0324adb}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="Zoomit.cpp">
@@ -66,6 +72,48 @@
     <ClCompile Include="..\ZoomItBreak\BreakTimer.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="BackgroundBlur.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="WebcamCapture.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="WebcamPreviewWindow.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\celt_lpc.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\denoise.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\kiss_fft.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\nnet.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\nnet_default.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\parse_lpcnet_weights.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\pitch.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\rnn.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\rnnoise_data_little.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="rnnoise\rnnoise_tables.c">
+      <Filter>Source Files\rnnoise</Filter>
+    </ClCompile>
+    <ClCompile Include="NoiseSuppressor.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="Registry.h">
@@ -119,6 +167,27 @@
     <ClInclude Include="..\ZoomItBreak\BreakTimer.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="BackgroundBlur.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="WebcamCapture.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="WebcamPreviewWindow.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="rnnoise\vec.h">
+      <Filter>Header Files\rnnoise</Filter>
+    </ClInclude>
+    <ClInclude Include="rnnoise\nnet_arch.h">
+      <Filter>Header Files\rnnoise</Filter>
+    </ClInclude>
+    <ClInclude Include="NoiseSuppressor.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="rnnoise\rnnoise.h">
+      <Filter>Header Files\rnnoise</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Image Include="appicon.ico">
@@ -150,5 +219,6 @@
   </ItemGroup>
   <ItemGroup>
     <Natvis Include="$(MSBuildThisFileDirectory)..\..\natvis\wil.natvis" />
+    <Natvis Include="$(MSBuildThisFileDirectory)..\..\natvis\wil.natstepfilter" />
   </ItemGroup>
 </Project>

src/modules/ZoomIt/ZoomIt/ZoomItSettings.h

@@ -56,12 +56,16 @@ RecordingFormat g_RecordingFormat = RecordingFormat::MP4;
 BOOLEAN g_CaptureSystemAudio = TRUE;
 BOOLEAN g_CaptureAudio = FALSE;
 BOOLEAN g_MicMonoMix = FALSE;
+BOOLEAN g_NoiseCancellation = TRUE;
 TCHAR	g_MicrophoneDeviceId[MAX_PATH] = {0};
 BOOLEAN g_WebcamOverlay = FALSE;
 DWORD   g_WebcamPosition = 3; // 0=TL, 1=TR, 2=BL, 3=BR
 DWORD   g_WebcamSize = 1;     // 0=Small(15%), 1=Medium(25%), 2=Large(33%), 3=XLarge(50%)
 DWORD   g_WebcamShape = 0;    // 0=Square, 1=RoundedRect, 2=RoundedSquare, 3=Circle
 TCHAR   g_WebcamDeviceSymLink[MAX_PATH] = {0};
+DWORD   g_WebcamBackgroundMode = 0;     // 0=None, 1=Blur, 2=Image
+TCHAR   g_WebcamBackgroundImage[MAX_PATH] = {0};
+DWORD   g_WebcamBrightness = 50;        // 0=dark, 50=neutral, 100=bright
 BOOLEAN g_RecordAspectRatio = FALSE; // Lock region selection to 16:9
 TCHAR	g_RecordingSaveLocationBuffer[MAX_PATH] = {0};
 TCHAR	g_ScreenshotSaveLocationBuffer[MAX_PATH] = {0};
@@ -116,11 +120,15 @@ REG_SETTING RegSettings[] = {
     { L"CaptureSystemAudio", SETTING_TYPE_BOOLEAN, 0, &g_CaptureSystemAudio, static_cast<DOUBLE>(g_CaptureSystemAudio) },
     { L"MicMonoMix", SETTING_TYPE_BOOLEAN, 0, &g_MicMonoMix, static_cast<DOUBLE>(g_MicMonoMix) },
     { L"MicrophoneDeviceId", SETTING_TYPE_STRING, sizeof(g_MicrophoneDeviceId), g_MicrophoneDeviceId, static_cast<DOUBLE>(0) },
+    { L"NoiseCancellation", SETTING_TYPE_BOOLEAN, 0, &g_NoiseCancellation, static_cast<DOUBLE>(g_NoiseCancellation) },
     { L"WebcamOverlay", SETTING_TYPE_BOOLEAN, 0, &g_WebcamOverlay, static_cast<DOUBLE>(g_WebcamOverlay) },
     { L"WebcamPosition", SETTING_TYPE_DWORD, 0, &g_WebcamPosition, static_cast<DOUBLE>(g_WebcamPosition) },
     { L"WebcamSize", SETTING_TYPE_DWORD, 0, &g_WebcamSize, static_cast<DOUBLE>(g_WebcamSize) },
     { L"WebcamShape", SETTING_TYPE_DWORD, 0, &g_WebcamShape, static_cast<DOUBLE>(g_WebcamShape) },
     { L"WebcamDeviceSymLink", SETTING_TYPE_STRING, sizeof(g_WebcamDeviceSymLink), g_WebcamDeviceSymLink, static_cast<DOUBLE>(0) },
+    { L"WebcamBackgroundMode", SETTING_TYPE_DWORD, 0, &g_WebcamBackgroundMode, static_cast<DOUBLE>(g_WebcamBackgroundMode) },
+    { L"WebcamBackgroundImage", SETTING_TYPE_STRING, sizeof(g_WebcamBackgroundImage), g_WebcamBackgroundImage, static_cast<DOUBLE>(0) },
+    { L"WebcamBrightness", SETTING_TYPE_DWORD, 0, &g_WebcamBrightness, static_cast<DOUBLE>(g_WebcamBrightness) },
     { L"RecordAspectRatio", SETTING_TYPE_BOOLEAN, 0, &g_RecordAspectRatio, static_cast<DOUBLE>(g_RecordAspectRatio) },
     { L"RecordingSaveLocation", SETTING_TYPE_STRING, sizeof(g_RecordingSaveLocationBuffer), g_RecordingSaveLocationBuffer, static_cast<DOUBLE>(0) },
     { L"ScreenshotSaveLocation", SETTING_TYPE_STRING, sizeof(g_ScreenshotSaveLocationBuffer), g_ScreenshotSaveLocationBuffer, static_cast<DOUBLE>(0) },

src/modules/ZoomIt/ZoomIt/Zoomit.cpp

@@ -21,7 +21,6 @@
 #include "PanoramaCapture.h"
 #include <wtsapi32.h>
 #include <tlhelp32.h>
-#include <limits>
 #include <vector>
 
 #ifdef __ZOOMIT_POWERTOYS__
@@ -725,7 +724,7 @@ RunningOnWin64(
 // this executable.
 //
 //--------------------------------------------------------------------
-BOOLEAN ExtractImageResource( PTCHAR ResourceName, PTCHAR TargetFile )
+BOOLEAN ExtractImageResource( PCTSTR ResourceName, PTCHAR TargetFile )
 {
     HRSRC		hResource;
     HGLOBAL		hImageResource;
@@ -2835,6 +2834,323 @@ INT_PTR CALLBACK AdvancedBreakProc( HWND hDlg, UINT message, WPARAM wParam, LPAR
 }
 
 
+//----------------------------------------------------------------------------
+//
+// WebcamSettingsProc
+//
+//----------------------------------------------------------------------------
+INT_PTR CALLBACK WebcamSettingsProc( HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam )
+{
+    static std::vector<std::pair<std::wstring, std::wstring>> webcams;
+    static UINT currentDpi = DPI_BASELINE;
+    static HWND s_hBrightnessTooltip = nullptr;
+
+    switch( message ) {
+    case WM_INITDIALOG:
+    {
+        HICON hIcon = LoadIcon( g_hInstance, L"APPICON" );
+        if( hIcon )
+        {
+            SendMessage( hDlg, WM_SETICON, ICON_BIG, reinterpret_cast<LPARAM>(hIcon) );
+            SendMessage( hDlg, WM_SETICON, ICON_SMALL, reinterpret_cast<LPARAM>(hIcon) );
+        }
+
+        // Enumerate webcam devices
+        webcams.clear();
+        {
+            MFStartup( MF_VERSION, MFSTARTUP_LITE );
+            IMFAttributes* pAttributes = nullptr;
+            if( SUCCEEDED( MFCreateAttributes( &pAttributes, 1 ) ) )
+            {
+                pAttributes->SetGUID( MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE, MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_GUID );
+                IMFActivate** ppDevices = nullptr;
+                UINT32 count = 0;
+                if( SUCCEEDED( MFEnumDeviceSources( pAttributes, &ppDevices, &count ) ) )
+                {
+                    for( UINT32 i = 0; i < count; i++ )
+                    {
+                        LPWSTR symLink = nullptr, friendlyName = nullptr;
+                        UINT32 nameLen = 0;
+                        if( SUCCEEDED( ppDevices[i]->GetAllocatedString( MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK, &symLink, &nameLen ) ) &&
+                            SUCCEEDED( ppDevices[i]->GetAllocatedString( MF_DEVSOURCE_ATTRIBUTE_FRIENDLY_NAME, &friendlyName, &nameLen ) ) )
+                        {
+                            webcams.emplace_back( symLink, friendlyName );
+                        }
+                        if( symLink ) CoTaskMemFree( symLink );
+                        if( friendlyName ) CoTaskMemFree( friendlyName );
+                        ppDevices[i]->Release();
+                    }
+                    CoTaskMemFree( ppDevices );
+                }
+                pAttributes->Release();
+            }
+            MFShutdown();
+        }
+
+        // Populate camera combo
+        SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_DEVICE ), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"Default") );
+        {
+            int selection = 0;
+            for( size_t i = 0; i < webcams.size(); i++ )
+            {
+                SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_DEVICE ), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(webcams[i].second.c_str()) );
+                if( selection == 0 && wcscmp( webcams[i].first.c_str(), g_WebcamDeviceSymLink ) == 0 )
+                    selection = static_cast<int>(i + 1);
+            }
+            SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_DEVICE ), CB_SETCURSEL, selection, 0 );
+        }
+
+        // Populate position combo
+        {
+            const wchar_t* positions[] = { L"Top-left", L"Top-right", L"Bottom-left", L"Bottom-right" };
+            for( int i = 0; i < 4; i++ )
+                SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_POSITION ), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(positions[i]) );
+            SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_POSITION ), CB_SETCURSEL, g_WebcamPosition, 0 );
+        }
+
+        // Populate size combo
+        {
+            const wchar_t* sizes[] = { L"Small", L"Medium", L"Large", L"X-Large", L"Full screen" };
+            for( int i = 0; i < 5; i++ )
+                SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_SIZE ), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(sizes[i]) );
+            SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_SIZE ), CB_SETCURSEL, g_WebcamSize, 0 );
+        }
+
+        // Populate shape combo
+        {
+            const wchar_t* shapes[] = { L"Rectangle", L"Rounded Rectangle", L"Rounded Square", L"Circle" };
+            for( int i = 0; i < 4; i++ )
+                SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_SHAPE ), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(shapes[i]) );
+            SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_SHAPE ), CB_SETCURSEL, g_WebcamShape, 0 );
+        }
+
+        // Populate background mode combo
+        {
+            HWND hBgMode = GetDlgItem( hDlg, IDC_WEBCAM_BG_MODE );
+            SendMessage( hBgMode, CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"None") );
+            SendMessage( hBgMode, CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"Blur") );
+            SendMessage( hBgMode, CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"Image") );
+            SendMessage( hBgMode, CB_SETCURSEL, g_WebcamBackgroundMode, 0 );
+            SetDlgItemText( hDlg, IDC_WEBCAM_BG_IMAGE, g_WebcamBackgroundImage );
+        }
+
+        // Initialize brightness slider
+        {
+            HWND hSlider = GetDlgItem( hDlg, IDC_WEBCAM_BRIGHTNESS_SLIDER );
+            SendMessage( hSlider, TBM_SETRANGE, FALSE, MAKELONG( 0, 100 ) );
+            SendMessage( hSlider, TBM_SETPOS, TRUE, g_WebcamBrightness );
+
+            // Place the built-in drag tooltip (TBS_TOOLTIPS) beneath the slider.
+            SendMessage( hSlider, TBM_SETTIPSIDE, TBTS_BOTTOM, 0 );
+
+            // Hover tooltip that displays the current brightness when not dragging.
+            // TTF_SUBCLASS lets the tooltip detect hover itself; LPSTR_TEXTCALLBACK
+            // makes us supply the current value via TTN_GETDISPINFO.
+            s_hBrightnessTooltip = CreateWindowEx(
+                WS_EX_TOPMOST, TOOLTIPS_CLASS, nullptr,
+                WS_POPUP | TTS_ALWAYSTIP | TTS_NOPREFIX,
+                CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
+                hDlg, nullptr, g_hInstance, nullptr );
+            if( s_hBrightnessTooltip )
+            {
+                TOOLINFO ti = { sizeof(TOOLINFO) };
+                ti.uFlags = TTF_IDISHWND | TTF_SUBCLASS;
+                ti.hwnd = hDlg;
+                ti.uId = reinterpret_cast<UINT_PTR>(hSlider);
+                ti.lpszText = LPSTR_TEXTCALLBACK;
+                SendMessage( s_hBrightnessTooltip, TTM_ADDTOOL, 0, reinterpret_cast<LPARAM>(&ti) );
+            }
+        }
+
+        // Set initial enabled state
+        {
+            bool isFullScreen = g_WebcamSize == 4;
+            EnableWindow( GetDlgItem( hDlg, IDC_WEBCAM_SHAPE_LABEL ), !isFullScreen );
+            EnableWindow( GetDlgItem( hDlg, IDC_WEBCAM_SHAPE ), !isFullScreen );
+            bool isImageMode = g_WebcamBackgroundMode == 2;
+            EnableWindow( GetDlgItem( hDlg, IDC_WEBCAM_BG_IMAGE ), isImageMode );
+            EnableWindow( GetDlgItem( hDlg, IDC_WEBCAM_BG_BROWSE ), isImageMode );
+        }
+
+        // DPI scaling
+        currentDpi = GetDpiForWindowHelper( hDlg );
+        if( currentDpi != DPI_BASELINE )
+            ScaleDialogForDpi( hDlg, currentDpi, DPI_BASELINE );
+
+        ApplyDarkModeToDialog( hDlg );
+        return TRUE;
+    }
+
+    case WM_DPICHANGED:
+        HandleDialogDpiChange( hDlg, wParam, lParam, currentDpi );
+        return TRUE;
+
+    case WM_ERASEBKGND:
+        if( IsDarkModeEnabled() )
+        {
+            HDC hdc = reinterpret_cast<HDC>(wParam);
+            RECT rc;
+            GetClientRect( hDlg, &rc );
+            FillRect( hdc, &rc, GetDarkModeBrush() );
+            return TRUE;
+        }
+        break;
+
+    case WM_CTLCOLORDLG:
+    case WM_CTLCOLORSTATIC:
+    case WM_CTLCOLORBTN:
+    case WM_CTLCOLOREDIT:
+    case WM_CTLCOLORLISTBOX:
+    {
+        HDC hdc = reinterpret_cast<HDC>(wParam);
+        HWND hCtrl = reinterpret_cast<HWND>(lParam);
+        HBRUSH hBrush = HandleDarkModeCtlColor( hdc, hCtrl, message );
+        if( hBrush )
+            return reinterpret_cast<INT_PTR>(hBrush);
+        break;
+    }
+
+    case WM_NOTIFY:
+    {
+        LPNMHDR pnmh = reinterpret_cast<LPNMHDR>(lParam);
+        if( s_hBrightnessTooltip && pnmh->hwndFrom == s_hBrightnessTooltip )
+        {
+            if( pnmh->code == TTN_GETDISPINFO )
+            {
+                LPNMTTDISPINFO pdi = reinterpret_cast<LPNMTTDISPINFO>(lParam);
+                static wchar_t buf[16];
+                int pos = static_cast<int>(SendMessage(
+                    GetDlgItem( hDlg, IDC_WEBCAM_BRIGHTNESS_SLIDER ), TBM_GETPOS, 0, 0 ));
+                _snwprintf_s( buf, _countof(buf), _TRUNCATE, L"%d", pos );
+                pdi->lpszText = buf;
+                return TRUE;
+            }
+            if( pnmh->code == TTN_SHOW )
+            {
+                // Reposition the tooltip directly beneath the slider, centered on the cursor.
+                HWND hSlider = GetDlgItem( hDlg, IDC_WEBCAM_BRIGHTNESS_SLIDER );
+                RECT rcSlider, rcTip;
+                GetWindowRect( hSlider, &rcSlider );
+                GetWindowRect( s_hBrightnessTooltip, &rcTip );
+                POINT pt;
+                GetCursorPos( &pt );
+                int tipW = rcTip.right - rcTip.left;
+                SetWindowPos( s_hBrightnessTooltip, HWND_TOPMOST,
+                              pt.x - tipW / 2, rcSlider.bottom + 4, 0, 0,
+                              SWP_NOSIZE | SWP_NOACTIVATE );
+                return TRUE;
+            }
+        }
+        break;
+    }
+
+    case WM_DESTROY:
+        if( s_hBrightnessTooltip )
+        {
+            DestroyWindow( s_hBrightnessTooltip );
+            s_hBrightnessTooltip = nullptr;
+        }
+        break;
+
+    case WM_COMMAND:
+        // Handle size combo change — disable shape when Full screen
+        if( HIWORD(wParam) == CBN_SELCHANGE && LOWORD(wParam) == IDC_WEBCAM_SIZE )
+        {
+            bool isFullScreen = SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_SIZE ), CB_GETCURSEL, 0, 0 ) == 4;
+            EnableWindow( GetDlgItem( hDlg, IDC_WEBCAM_SHAPE_LABEL ), !isFullScreen );
+            EnableWindow( GetDlgItem( hDlg, IDC_WEBCAM_SHAPE ), !isFullScreen );
+        }
+        // Handle background mode combo change — show/hide browse controls
+        if( HIWORD(wParam) == CBN_SELCHANGE && LOWORD(wParam) == IDC_WEBCAM_BG_MODE )
+        {
+            bool isImageMode = SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_BG_MODE ), CB_GETCURSEL, 0, 0 ) == 2;
+            EnableWindow( GetDlgItem( hDlg, IDC_WEBCAM_BG_IMAGE ), isImageMode );
+            EnableWindow( GetDlgItem( hDlg, IDC_WEBCAM_BG_BROWSE ), isImageMode );
+        }
+
+        switch( LOWORD(wParam) ) {
+        case IDC_WEBCAM_BG_BROWSE:
+        {
+            auto openDialog = wil::CoCreateInstance<IFileOpenDialog>( CLSID_FileOpenDialog );
+
+            FILEOPENDIALOGOPTIONS options;
+            if( SUCCEEDED( openDialog->GetOptions( &options ) ) )
+                openDialog->SetOptions( options | FOS_FORCEFILESYSTEM );
+
+            COMDLG_FILTERSPEC fileTypes[] = {
+                { L"Bitmap Files (*.bmp;*.dib)", L"*.bmp;*.dib" },
+                { L"PNG (*.png)", L"*.png" },
+                { L"JPEG (*.jpg;*.jpeg;*.jpe;*.jfif)", L"*.jpg;*.jpeg;*.jpe;*.jfif" },
+                { L"GIF (*.gif)", L"*.gif" },
+                { L"All Picture Files", L"*.bmp;*.dib;*.png;*.jpg;*.jpeg;*.jpe;*.jfif;*.gif" },
+                { L"All Files", L"*.*" }
+            };
+            openDialog->SetFileTypes( _countof( fileTypes ), fileTypes );
+            openDialog->SetFileTypeIndex( 5 );
+            openDialog->SetTitle( L"ZoomIt: Specify Background Image..." );
+
+            TCHAR bgFilePath[MAX_PATH], bgInitDir[MAX_PATH];
+            GetDlgItemText( hDlg, IDC_WEBCAM_BG_IMAGE, bgFilePath, _countof( bgFilePath ) );
+            if( _tcsrchr( bgFilePath, '\\' ) )
+            {
+                _tcscpy( bgInitDir, bgFilePath );
+                *( _tcsrchr( bgInitDir, '\\' ) + 1 ) = 0;
+            }
+            else
+            {
+                _tcscpy( bgFilePath, L"%USERPROFILE%\\Pictures" );
+                ExpandEnvironmentStrings( bgFilePath, bgInitDir, _countof( bgInitDir ) );
+            }
+            wil::com_ptr<IShellItem> folderItem;
+            if( SUCCEEDED( SHCreateItemFromParsingName( bgInitDir, nullptr, IID_PPV_ARGS( &folderItem ) ) ) )
+                openDialog->SetFolder( folderItem.get() );
+
+            OpenSaveDialogEvents* pEvents = new OpenSaveDialogEvents(false);
+            DWORD dwCookie = 0;
+            openDialog->Advise( pEvents, &dwCookie );
+
+            if( SUCCEEDED( openDialog->Show( hDlg ) ) )
+            {
+                wil::com_ptr<IShellItem> resultItem;
+                if( SUCCEEDED( openDialog->GetResult( &resultItem ) ) )
+                {
+                    wil::unique_cotaskmem_string pathStr;
+                    if( SUCCEEDED( resultItem->GetDisplayName( SIGDN_FILESYSPATH, &pathStr ) ) )
+                        SetDlgItemText( hDlg, IDC_WEBCAM_BG_IMAGE, pathStr.get() );
+                }
+            }
+
+            openDialog->Unadvise( dwCookie );
+            pEvents->Release();
+            break;
+        }
+
+        case IDOK:
+            g_WebcamPosition = static_cast<DWORD>(SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_POSITION ), CB_GETCURSEL, 0, 0 ));
+            g_WebcamSize = static_cast<DWORD>(SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_SIZE ), CB_GETCURSEL, 0, 0 ));
+            g_WebcamShape = static_cast<DWORD>(SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_SHAPE ), CB_GETCURSEL, 0, 0 ));
+            g_WebcamBackgroundMode = static_cast<DWORD>(SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_BG_MODE ), CB_GETCURSEL, 0, 0 ));
+            GetDlgItemText( hDlg, IDC_WEBCAM_BG_IMAGE, g_WebcamBackgroundImage, MAX_PATH );
+            g_WebcamBrightness = static_cast<DWORD>(SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_BRIGHTNESS_SLIDER ), TBM_GETPOS, 0, 0 ));
+            {
+                int wcIndex = static_cast<int>(SendMessage( GetDlgItem( hDlg, IDC_WEBCAM_DEVICE ), CB_GETCURSEL, 0, 0 ));
+                _tcscpy( g_WebcamDeviceSymLink, wcIndex == 0 ? L"" : webcams[static_cast<size_t>(wcIndex) - 1].first.c_str() );
+            }
+            reg.WriteRegSettings( RegSettings );
+            EndDialog( hDlg, 0 );
+            break;
+
+        case IDCANCEL:
+            EndDialog( hDlg, 0 );
+            return TRUE;
+        }
+        break;
+    }
+
+    return FALSE;
+}
+
+
 //----------------------------------------------------------------------------
 //
 // OptionsTabProc
@@ -2972,52 +3288,33 @@ INT_PTR CALLBACK OptionsTabProc( HWND hDlg, UINT message,
                 // Enable/disable audio controls based on selection (GIF has no audio)
                 EnableWindow(GetDlgItem(hDlg, IDC_CAPTURE_SYSTEM_AUDIO), !isGifSelected);
                 EnableWindow(GetDlgItem(hDlg, IDC_CAPTURE_AUDIO), !isGifSelected);
+                EnableWindow(GetDlgItem(hDlg, IDC_NOISE_CANCELLATION), !isGifSelected);
+                EnableWindow(GetDlgItem(hDlg, IDC_MIC_MONO_MIX), !isGifSelected);
                 EnableWindow(GetDlgItem(hDlg, IDC_MICROPHONE_LABEL), !isGifSelected);
                 EnableWindow(GetDlgItem(hDlg, IDC_MICROPHONE), !isGifSelected);
 
-                // Enable/disable webcam controls (webcam overlay is MP4-only).
-                // Also keep everything disabled if no webcam is present.
-                bool hasWebcam = SendMessage(GetDlgItem(hDlg, IDC_WEBCAM_DEVICE), CB_GETCOUNT, 0, 0) > 1;
-                bool webcamEnabled = hasWebcam && !isGifSelected && IsDlgButtonChecked(hDlg, IDC_WEBCAM_OVERLAY) == BST_CHECKED;
-                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_OVERLAY), hasWebcam && !isGifSelected);
-                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_DEVICE_LABEL), webcamEnabled);
-                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_DEVICE), webcamEnabled);
-                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_POSITION_LABEL), webcamEnabled);
-                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_POSITION), webcamEnabled);
-                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SIZE_LABEL), webcamEnabled);
-                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SIZE), webcamEnabled);
-                {
-                    bool isFullScreen = webcamEnabled && SendMessage(GetDlgItem(hDlg, IDC_WEBCAM_SIZE), CB_GETCURSEL, 0, 0) == 4;
-                    EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SHAPE_LABEL), webcamEnabled && !isFullScreen);
-                    EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SHAPE), webcamEnabled && !isFullScreen);
-                }
+                // Enable/disable webcam overlay and settings button (webcam overlay is MP4-only).
+                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_OVERLAY), !isGifSelected);
+                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SETTINGS), !isGifSelected && IsDlgButtonChecked(hDlg, IDC_WEBCAM_OVERLAY) == BST_CHECKED);
             }
         }
         if (HIWORD(wParam) == BN_CLICKED && LOWORD(wParam) == IDC_WEBCAM_OVERLAY) {
-            bool isGif = (g_RecordingFormat == RecordingFormat::GIF);
-            bool webcamEnabled = !isGif && IsDlgButtonChecked(hDlg, IDC_WEBCAM_OVERLAY) == BST_CHECKED;
-            EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_DEVICE_LABEL), webcamEnabled);
-            EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_DEVICE), webcamEnabled);
-            EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_POSITION_LABEL), webcamEnabled);
-            EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_POSITION), webcamEnabled);
-            EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SIZE_LABEL), webcamEnabled);
-            EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SIZE), webcamEnabled);
-            {
-                bool isFullScreen = webcamEnabled && SendMessage(GetDlgItem(hDlg, IDC_WEBCAM_SIZE), CB_GETCURSEL, 0, 0) == 4;
-                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SHAPE_LABEL), webcamEnabled && !isFullScreen);
-                EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SHAPE), webcamEnabled && !isFullScreen);
-            }
+            bool webcamEnabled = IsDlgButtonChecked(hDlg, IDC_WEBCAM_OVERLAY) == BST_CHECKED;
+            EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SETTINGS), webcamEnabled);
         }
-        // Handle webcam size combo change — disable shape when Full screen selected
-        if (HIWORD(wParam) == CBN_SELCHANGE && LOWORD(wParam) == IDC_WEBCAM_SIZE) {
-            bool isGif = (g_RecordingFormat == RecordingFormat::GIF);
-            bool webcamEnabled = !isGif && IsDlgButtonChecked(hDlg, IDC_WEBCAM_OVERLAY) == BST_CHECKED;
-            bool isFullScreen = SendMessage(GetDlgItem(hDlg, IDC_WEBCAM_SIZE), CB_GETCURSEL, 0, 0) == 4;
-            EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SHAPE_LABEL), webcamEnabled && !isFullScreen);
-            EnableWindow(GetDlgItem(hDlg, IDC_WEBCAM_SHAPE), webcamEnabled && !isFullScreen);
+        if (HIWORD(wParam) == BN_CLICKED && LOWORD(wParam) == IDC_CAPTURE_AUDIO) {
+            bool micEnabled = IsDlgButtonChecked(hDlg, IDC_CAPTURE_AUDIO) == BST_CHECKED;
+            EnableWindow(GetDlgItem(hDlg, IDC_NOISE_CANCELLATION), micEnabled);
+            EnableWindow(GetDlgItem(hDlg, IDC_MIC_MONO_MIX), micEnabled);
+            EnableWindow(GetDlgItem(hDlg, IDC_MICROPHONE_LABEL), micEnabled);
+            EnableWindow(GetDlgItem(hDlg, IDC_MICROPHONE), micEnabled);
+
         }
 
         switch ( LOWORD( wParam )) {
+        case IDC_WEBCAM_SETTINGS:
+            DialogBox( g_hInstance, L"WEBCAM_SETTINGS", hDlg, WebcamSettingsProc );
+            break;
         case IDC_ADVANCED_BREAK:
             DialogBox( g_hInstance, L"ADVANCED_BREAK", hDlg, AdvancedBreakProc );
             break;
@@ -4577,7 +4874,6 @@ INT_PTR CALLBACK OptionsProc( HWND hDlg, UINT message,
     DWORD			newDrawToggleKey, newDrawToggleMod, newBreakToggleMod, newDemoTypeToggleMod, newRecordToggleMod, newSnipToggleMod, newSnipPanoramaToggleMod, newSnipOcrToggleMod;
     DWORD			newLiveZoomToggleKey, newLiveZoomToggleMod;
     static std::vector<std::pair<std::wstring, std::wstring>>	microphones;
-    static std::vector<std::pair<std::wstring, std::wstring>>	webcams;
 
     auto CleanupFonts = [&]()
     {
@@ -4849,6 +5145,9 @@ INT_PTR CALLBACK OptionsProc( HWND hDlg, UINT message,
         CheckDlgButton( g_OptionsTabs[RECORD_PAGE].hPage, IDC_MIC_MONO_MIX,
             g_MicMonoMix ? BST_CHECKED: BST_UNCHECKED );
 
+        CheckDlgButton( g_OptionsTabs[RECORD_PAGE].hPage, IDC_NOISE_CANCELLATION,
+            g_NoiseCancellation ? BST_CHECKED: BST_UNCHECKED );
+
         CheckDlgButton( g_OptionsTabs[RECORD_PAGE].hPage, IDC_RECORD_ASPECT_RATIO,
             g_RecordAspectRatio ? BST_CHECKED: BST_UNCHECKED );
 
@@ -4924,101 +5223,19 @@ INT_PTR CALLBACK OptionsProc( HWND hDlg, UINT message,
         bool isGifSelected = (g_RecordingFormat == RecordingFormat::GIF);
         EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_CAPTURE_SYSTEM_AUDIO), !isGifSelected);
         EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_CAPTURE_AUDIO), !isGifSelected);
-        EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_MICROPHONE_LABEL), !isGifSelected);
-        EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_MICROPHONE), !isGifSelected);
+        EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_NOISE_CANCELLATION), !isGifSelected && g_CaptureAudio);
+        EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_MIC_MONO_MIX), !isGifSelected && g_CaptureAudio);
+        EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_MICROPHONE_LABEL), !isGifSelected && g_CaptureAudio);
+        EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_MICROPHONE), !isGifSelected && g_CaptureAudio);
 
         // Webcam overlay controls
         CheckDlgButton( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_OVERLAY,
             g_WebcamOverlay ? BST_CHECKED : BST_UNCHECKED );
 
-        // Enumerate webcam devices
-        webcams.clear();
+        // Set initial enabled state for webcam overlay and settings button
         {
-            MFStartup( MF_VERSION, MFSTARTUP_LITE );
-            IMFAttributes* pAttributes = nullptr;
-            if( SUCCEEDED( MFCreateAttributes( &pAttributes, 1 ) ) )
-            {
-                pAttributes->SetGUID( MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE, MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_GUID );
-                IMFActivate** ppDevices = nullptr;
-                UINT32 count = 0;
-                if( SUCCEEDED( MFEnumDeviceSources( pAttributes, &ppDevices, &count ) ) )
-                {
-                    for( UINT32 i = 0; i < count; i++ )
-                    {
-                        WCHAR* symLink = nullptr;
-                        UINT32 symLinkLen = 0;
-                        WCHAR* friendlyName = nullptr;
-                        UINT32 nameLen = 0;
-                        if( SUCCEEDED( ppDevices[i]->GetAllocatedString( MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK, &symLink, &symLinkLen ) ) &&
-                            SUCCEEDED( ppDevices[i]->GetAllocatedString( MF_DEVSOURCE_ATTRIBUTE_FRIENDLY_NAME, &friendlyName, &nameLen ) ) )
-                        {
-                            webcams.emplace_back( symLink, friendlyName );
-                        }
-                        if( symLink ) CoTaskMemFree( symLink );
-                        if( friendlyName ) CoTaskMemFree( friendlyName );
-                        ppDevices[i]->Release();
-                    }
-                    CoTaskMemFree( ppDevices );
-                }
-                pAttributes->Release();
-            }
-            MFShutdown();
-        }
-
-        // Add webcam devices to combo box
-        SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_DEVICE ), static_cast<UINT>(CB_ADDSTRING), static_cast<WPARAM>(0), reinterpret_cast<LPARAM>(L"Default") );
-        selection = 0;
-        for( size_t i = 0; i < webcams.size(); i++ )
-        {
-            SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_DEVICE ), static_cast<UINT>(CB_ADDSTRING), static_cast<WPARAM>(0), reinterpret_cast<LPARAM>(webcams[i].second.c_str()) );
-            if( selection == 0 && wcscmp( webcams[i].first.c_str(), g_WebcamDeviceSymLink ) == 0 )
-            {
-                selection = i + 1;
-            }
-        }
-        SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_DEVICE ), CB_SETCURSEL, static_cast<WPARAM>(selection), static_cast<LPARAM>(0) );
-
-        // Webcam position combo
-        {
-            const wchar_t* positions[] = { L"Top left", L"Top right", L"Bottom left", L"Bottom right" };
-            for( int i = 0; i < 4; i++ )
-                SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_POSITION ), static_cast<UINT>(CB_ADDSTRING), static_cast<WPARAM>(0), reinterpret_cast<LPARAM>(positions[i]) );
-            SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_POSITION ), CB_SETCURSEL, static_cast<WPARAM>(g_WebcamPosition), static_cast<LPARAM>(0) );
-        }
-
-        // Webcam size combo
-        {
-            const wchar_t* sizes[] = { L"Small", L"Medium", L"Large", L"X-Large", L"Full screen" };
-            for( int i = 0; i < 5; i++ )
-                SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SIZE ), static_cast<UINT>(CB_ADDSTRING), static_cast<WPARAM>(0), reinterpret_cast<LPARAM>(sizes[i]) );
-            SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SIZE ), CB_SETCURSEL, static_cast<WPARAM>(g_WebcamSize), static_cast<LPARAM>(0) );
-        }
-
-        // Webcam shape combo
-        {
-            const wchar_t* shapes[] = { L"Rectangle", L"Rounded rectangle", L"Rounded square", L"Circle" };
-            for( int i = 0; i < 4; i++ )
-                SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SHAPE ), static_cast<UINT>(CB_ADDSTRING), static_cast<WPARAM>(0), reinterpret_cast<LPARAM>(shapes[i]) );
-            SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SHAPE ), CB_SETCURSEL, static_cast<WPARAM>(g_WebcamShape), static_cast<LPARAM>(0) );
-        }
-
-        // Set initial enabled state for webcam controls.
-        // Disable everything if no webcam is detected on the system.
-        {
-            bool hasWebcam = !webcams.empty();
-            bool webcamEnabled = hasWebcam && !isGifSelected && g_WebcamOverlay;
-            EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_OVERLAY), hasWebcam && !isGifSelected);
-            EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_DEVICE_LABEL), webcamEnabled);
-            EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_DEVICE), webcamEnabled);
-            EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_POSITION_LABEL), webcamEnabled);
-            EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_POSITION), webcamEnabled);
-            EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SIZE_LABEL), webcamEnabled);
-            EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SIZE), webcamEnabled);
-            {
-                bool isFullScreen = webcamEnabled && g_WebcamSize == 4;
-                EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SHAPE_LABEL), webcamEnabled && !isFullScreen);
-                EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SHAPE), webcamEnabled && !isFullScreen);
-            }
+            EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_OVERLAY), !isGifSelected);
+            EnableWindow(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SETTINGS), !isGifSelected && g_WebcamOverlay);
         }
 
         if( GetFileAttributes( g_DemoTypeFile ) == -1 )
@@ -5372,6 +5589,7 @@ INT_PTR CALLBACK OptionsProc( HWND hDlg, UINT message,
             g_CaptureSystemAudio = IsDlgButtonChecked(g_OptionsTabs[RECORD_PAGE].hPage, IDC_CAPTURE_SYSTEM_AUDIO) == BST_CHECKED;
             g_CaptureAudio = IsDlgButtonChecked(g_OptionsTabs[RECORD_PAGE].hPage, IDC_CAPTURE_AUDIO) == BST_CHECKED;
             g_MicMonoMix = IsDlgButtonChecked(g_OptionsTabs[RECORD_PAGE].hPage, IDC_MIC_MONO_MIX) == BST_CHECKED;
+            g_NoiseCancellation = IsDlgButtonChecked(g_OptionsTabs[RECORD_PAGE].hPage, IDC_NOISE_CANCELLATION) == BST_CHECKED;
             g_RecordAspectRatio = IsDlgButtonChecked(g_OptionsTabs[RECORD_PAGE].hPage, IDC_RECORD_ASPECT_RATIO) == BST_CHECKED;
             GetDlgItemText( g_OptionsTabs[BREAK_PAGE].hPage, IDC_TIMER, text, 3 );
             text[2] = 0;
@@ -5385,15 +5603,8 @@ INT_PTR CALLBACK OptionsProc( HWND hDlg, UINT message,
             int index = static_cast<int>(SendMessage( GetDlgItem( g_OptionsTabs[RECORD_PAGE].hPage, IDC_MICROPHONE ), static_cast<UINT>(CB_GETCURSEL), static_cast<WPARAM>(0), static_cast<LPARAM>(0) ));
             _tcscpy( g_MicrophoneDeviceId, index == 0 ? L"" : microphones[static_cast<size_t>(index) - 1].first.c_str() );
 
-            // Get the webcam settings
+            // Get the webcam overlay setting (other webcam settings are saved in WebcamSettingsProc)
             g_WebcamOverlay = IsDlgButtonChecked(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_OVERLAY) == BST_CHECKED;
-            g_WebcamPosition = static_cast<DWORD>(SendMessage(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_POSITION), CB_GETCURSEL, 0, 0));
-            g_WebcamSize = static_cast<DWORD>(SendMessage(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SIZE), CB_GETCURSEL, 0, 0));
-            g_WebcamShape = static_cast<DWORD>(SendMessage(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_SHAPE), CB_GETCURSEL, 0, 0));
-            {
-                int wcIndex = static_cast<int>(SendMessage(GetDlgItem(g_OptionsTabs[RECORD_PAGE].hPage, IDC_WEBCAM_DEVICE), CB_GETCURSEL, 0, 0));
-                _tcscpy( g_WebcamDeviceSymLink, wcIndex == 0 ? L"" : webcams[static_cast<size_t>(wcIndex) - 1].first.c_str() );
-            }
 
             if( newToggleKey && !RegisterHotKey( GetParent( hDlg ), ZOOM_HOTKEY, newToggleMod, newToggleKey & 0xFF )) {
 
@@ -5465,18 +5676,15 @@ INT_PTR CALLBACK OptionsProc( HWND hDlg, UINT message,
                 break;
 
             }
-            else if( newRecordToggleKey ) {
-                UINT cropMod = newRecordToggleMod ^ MOD_SHIFT;
-                UINT windowMod = newRecordToggleMod ^ MOD_ALT;
-                if (!RegisterHotKey(GetParent(hDlg), RECORD_HOTKEY, newRecordToggleMod | MOD_NOREPEAT, newRecordToggleKey & 0xFF) ||
-                    (cropMod != 0 && !RegisterHotKey(GetParent(hDlg), RECORD_CROP_HOTKEY, cropMod | MOD_NOREPEAT, newRecordToggleKey & 0xFF)) ||
-                    (windowMod != 0 && !RegisterHotKey(GetParent(hDlg), RECORD_WINDOW_HOTKEY, windowMod | MOD_NOREPEAT, newRecordToggleKey & 0xFF))) {
+            else if( UINT cropMod = newRecordToggleMod ^ MOD_SHIFT, windowMod = newRecordToggleMod ^ MOD_ALT; newRecordToggleKey &&
+                (!RegisterHotKey(GetParent(hDlg), RECORD_HOTKEY, newRecordToggleMod | MOD_NOREPEAT, newRecordToggleKey & 0xFF) ||
+                (cropMod != 0 && !RegisterHotKey(GetParent(hDlg), RECORD_CROP_HOTKEY, cropMod | MOD_NOREPEAT, newRecordToggleKey & 0xFF)) ||
+                (windowMod != 0 && !RegisterHotKey(GetParent(hDlg), RECORD_WINDOW_HOTKEY, windowMod | MOD_NOREPEAT, newRecordToggleKey & 0xFF)))) {
 
-                    MessageBox(hDlg, L"The specified record hotkey is already in use.\nSelect a different record hotkey.",
-                        APPNAME, MB_ICONERROR);
-                    UnregisterAllHotkeys(GetParent(hDlg));
-                    break;
-                }
+                MessageBox(hDlg, L"The specified record hotkey is already in use.\nSelect a different record hotkey.",
+                    APPNAME, MB_ICONERROR);
+                UnregisterAllHotkeys(GetParent(hDlg));
+                break;
             } else {
 
                 g_BreakTimeout = newTimeout;
@@ -6706,6 +6914,22 @@ winrt::fire_and_forget StartRecordingAsync( HWND hWnd, LPRECT rcCrop, HWND hWndR
     // Capture the UI thread context so we can resume on it for the save dialog
     winrt::apartment_context uiThread;
 
+    // Start audio initialization as early as possible.  AudioGraph creation
+    // and microphone device opening take ~1400 ms.  By starting here, the
+    // init runs in the background during D3D device creation, capture-item
+    // creation, file I/O, and the entire VideoRecordingSession constructor
+    // (webcam probe + warmup), giving it ~1400 ms of overlap — enough to
+    // finish before StartAsync even needs the result.
+    std::unique_ptr<AudioSampleGenerator> audioGenerator;
+    winrt::Windows::Foundation::IAsyncAction audioInitAction{ nullptr };
+    if ((g_RecordingFormat != RecordingFormat::GIF) && (g_CaptureAudio || g_CaptureSystemAudio))
+    {
+        audioGenerator = std::make_unique<AudioSampleGenerator>(
+            g_CaptureAudio, g_CaptureSystemAudio, g_MicMonoMix, g_NoiseCancellation );
+        audioInitAction = audioGenerator->InitializeAsync();
+        _diagLog( L"audio InitializeAsync started (background)" );
+    }
+
     auto tempFolderPath = std::filesystem::temp_directory_path().wstring();
     auto tempFolder = co_await winrt::StorageFolder::GetFolderFromPathAsync( tempFolderPath );
     auto appFolder = co_await tempFolder.CreateFolderAsync( L"ZoomIt", winrt::CreationCollisionOption::OpenIfExists );
@@ -6794,9 +7018,8 @@ winrt::fire_and_forget StartRecordingAsync( HWND hWnd, LPRECT rcCrop, HWND hWndR
                                         item,
                                         *rcCrop,
                                         g_RecordFrameRate,
-                                        g_CaptureAudio,
-                                        g_CaptureSystemAudio,
-                                        g_MicMonoMix,
+                                        std::move(audioGenerator),
+                                        audioInitAction,
                                         stream );
         _diagLog( L"VideoRecordingSession::Create returned" );
 

src/modules/ZoomIt/ZoomIt/binres.rc

@@ -25,4 +25,7 @@ RCZOOMITSCR            BINRES  MOVEABLE PURE   "ZoomItBreak64.scr"
 RCZOOMITSCR            BINRES  MOVEABLE PURE   "ZoomItBreak64a.scr"
 #endif
 
+// Embed the selfie segmentation ONNX model (platform-independent).
+RCSEGMODEL             BINRES  MOVEABLE PURE   "selfie_segmentation.onnx"
+
 CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST "ZoomIt.exe.manifest"

src/modules/ZoomIt/ZoomIt/resource.h

@@ -127,6 +127,16 @@
 #define IDC_WEBCAM_SHAPE_LABEL          1121
 #define IDC_TRIM_APPEND                 1122
 #define IDC_RECORD_ASPECT_RATIO         1123
+#define IDC_WEBCAM_BACKGROUND_BLUR      1124
+#define IDC_WEBCAM_BG_LABEL             1125
+#define IDC_WEBCAM_BG_MODE              1126
+#define IDC_WEBCAM_BG_IMAGE             1127
+#define IDC_WEBCAM_BG_BROWSE            1128
+#define IDC_THIRDPARTY_NOTICES          1129
+#define IDC_WEBCAM_SETTINGS             1130
+#define IDC_WEBCAM_BRIGHTNESS_LABEL     1131
+#define IDC_WEBCAM_BRIGHTNESS_SLIDER    1132
+#define IDC_NOISE_CANCELLATION          1133
 #define IDC_SAVE                        40002
 #define IDC_COPY                        40004
 #define IDC_RECORD                      40006
@@ -142,7 +152,7 @@
 #ifndef APSTUDIO_READONLY_SYMBOLS
 #define _APS_NEXT_RESOURCE_VALUE        120
 #define _APS_NEXT_COMMAND_VALUE         40015
-#define _APS_NEXT_CONTROL_VALUE         1124
+#define _APS_NEXT_CONTROL_VALUE         1134
 #define _APS_NEXT_SYMED_VALUE           101
 #endif
 #endif

src/modules/ZoomIt/ZoomIt/rnnoise/COPYING

@@ -0,0 +1,32 @@
+Copyright (c) 2007-2017, 2024 Jean-Marc Valin
+Copyright (c) 2023 Amazon
+Copyright (c) 2017, Mozilla
+Copyright (c) 2005-2017, Xiph.Org Foundation
+Copyright (c) 2003-2004, Mark Borgerding
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+- Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+
+- Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+- Neither the name of the Xiph.Org Foundation nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION
+OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

src/modules/ZoomIt/ZoomIt/rnnoise/_kiss_fft_guts.h

@@ -0,0 +1,182 @@
+/*Copyright (c) 2003-2004, Mark Borgerding
+
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.*/
+
+#ifndef KISS_FFT_GUTS_H
+#define KISS_FFT_GUTS_H
+
+#define MIN(a,b) ((a)<(b) ? (a):(b))
+#define MAX(a,b) ((a)>(b) ? (a):(b))
+
+/* kiss_fft.h
+   defines kiss_fft_scalar as either short or a float type
+   and defines
+   typedef struct { kiss_fft_scalar r; kiss_fft_scalar i; }kiss_fft_cpx; */
+#include "kiss_fft.h"
+
+/*
+  Explanation of macros dealing with complex math:
+
+   C_MUL(m,a,b)         : m = a*b
+   C_FIXDIV( c , div )  : if a fixed point impl., c /= div. noop otherwise
+   C_SUB( res, a,b)     : res = a - b
+   C_SUBFROM( res , a)  : res -= a
+   C_ADDTO( res , a)    : res += a
+ * */
+#ifdef FIXED_POINT
+#include "arch.h"
+
+
+#define SAMP_MAX 2147483647
+#define TWID_MAX 32767
+#define TRIG_UPSCALE 1
+
+#define SAMP_MIN -SAMP_MAX
+
+
+#   define S_MUL(a,b) MULT16_32_Q15(b, a)
+
+#   define C_MUL(m,a,b) \
+      do{ (m).r = SUB32_ovflw(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
+          (m).i = ADD32_ovflw(S_MUL((a).r,(b).i) , S_MUL((a).i,(b).r)); }while(0)
+
+#   define C_MULC(m,a,b) \
+      do{ (m).r = ADD32_ovflw(S_MUL((a).r,(b).r) , S_MUL((a).i,(b).i)); \
+          (m).i = SUB32_ovflw(S_MUL((a).i,(b).r) , S_MUL((a).r,(b).i)); }while(0)
+
+#   define C_MULBYSCALAR( c, s ) \
+      do{ (c).r =  S_MUL( (c).r , s ) ;\
+          (c).i =  S_MUL( (c).i , s ) ; }while(0)
+
+#   define DIVSCALAR(x,k) \
+        (x) = S_MUL(  x, (TWID_MAX-((k)>>1))/(k)+1 )
+
+#   define C_FIXDIV(c,div) \
+        do {    DIVSCALAR( (c).r , div);  \
+                DIVSCALAR( (c).i  , div); }while (0)
+
+#define  C_ADD( res, a,b)\
+    do {(res).r=ADD32_ovflw((a).r,(b).r);  (res).i=ADD32_ovflw((a).i,(b).i); \
+    }while(0)
+#define  C_SUB( res, a,b)\
+    do {(res).r=SUB32_ovflw((a).r,(b).r);  (res).i=SUB32_ovflw((a).i,(b).i); \
+    }while(0)
+#define C_ADDTO( res , a)\
+    do {(res).r = ADD32_ovflw((res).r, (a).r);  (res).i = ADD32_ovflw((res).i,(a).i);\
+    }while(0)
+
+#define C_SUBFROM( res , a)\
+    do {(res).r = ADD32_ovflw((res).r,(a).r);  (res).i = SUB32_ovflw((res).i,(a).i); \
+    }while(0)
+
+#if defined(OPUS_ARM_INLINE_ASM)
+#include "arm/kiss_fft_armv4.h"
+#endif
+
+#if defined(OPUS_ARM_INLINE_EDSP)
+#include "arm/kiss_fft_armv5e.h"
+#endif
+#if defined(MIPSr1_ASM)
+#include "mips/kiss_fft_mipsr1.h"
+#endif
+
+#else  /* not FIXED_POINT*/
+
+#   define S_MUL(a,b) ( (a)*(b) )
+#define C_MUL(m,a,b) \
+    do{ (m).r = (a).r*(b).r - (a).i*(b).i;\
+        (m).i = (a).r*(b).i + (a).i*(b).r; }while(0)
+#define C_MULC(m,a,b) \
+    do{ (m).r = (a).r*(b).r + (a).i*(b).i;\
+        (m).i = (a).i*(b).r - (a).r*(b).i; }while(0)
+
+#define C_MUL4(m,a,b) C_MUL(m,a,b)
+
+#   define C_FIXDIV(c,div) /* NOOP */
+#   define C_MULBYSCALAR( c, s ) \
+    do{ (c).r *= (s);\
+        (c).i *= (s); }while(0)
+#endif
+
+#ifndef CHECK_OVERFLOW_OP
+#  define CHECK_OVERFLOW_OP(a,op,b) /* noop */
+#endif
+
+#ifndef C_ADD
+#define  C_ADD( res, a,b)\
+    do { \
+            CHECK_OVERFLOW_OP((a).r,+,(b).r)\
+            CHECK_OVERFLOW_OP((a).i,+,(b).i)\
+            (res).r=(a).r+(b).r;  (res).i=(a).i+(b).i; \
+    }while(0)
+#define  C_SUB( res, a,b)\
+    do { \
+            CHECK_OVERFLOW_OP((a).r,-,(b).r)\
+            CHECK_OVERFLOW_OP((a).i,-,(b).i)\
+            (res).r=(a).r-(b).r;  (res).i=(a).i-(b).i; \
+    }while(0)
+#define C_ADDTO( res , a)\
+    do { \
+            CHECK_OVERFLOW_OP((res).r,+,(a).r)\
+            CHECK_OVERFLOW_OP((res).i,+,(a).i)\
+            (res).r += (a).r;  (res).i += (a).i;\
+    }while(0)
+
+#define C_SUBFROM( res , a)\
+    do {\
+            CHECK_OVERFLOW_OP((res).r,-,(a).r)\
+            CHECK_OVERFLOW_OP((res).i,-,(a).i)\
+            (res).r -= (a).r;  (res).i -= (a).i; \
+    }while(0)
+#endif /* C_ADD defined */
+
+#ifdef FIXED_POINT
+/*#  define KISS_FFT_COS(phase)  TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * cos (phase))))
+#  define KISS_FFT_SIN(phase)  TRIG_UPSCALE*floor(MIN(32767,MAX(-32767,.5+32768 * sin (phase))))*/
+#  define KISS_FFT_COS(phase)  floor(.5+TWID_MAX*cos (phase))
+#  define KISS_FFT_SIN(phase)  floor(.5+TWID_MAX*sin (phase))
+#  define HALF_OF(x) ((x)>>1)
+#elif defined(USE_SIMD)
+#  define KISS_FFT_COS(phase) _mm_set1_ps( cos(phase) )
+#  define KISS_FFT_SIN(phase) _mm_set1_ps( sin(phase) )
+#  define HALF_OF(x) ((x)*_mm_set1_ps(.5f))
+#else
+#  define KISS_FFT_COS(phase) (kiss_fft_scalar) cos(phase)
+#  define KISS_FFT_SIN(phase) (kiss_fft_scalar) sin(phase)
+#  define HALF_OF(x) ((x)*.5f)
+#endif
+
+#define  kf_cexp(x,phase) \
+        do{ \
+                (x)->r = KISS_FFT_COS(phase);\
+                (x)->i = KISS_FFT_SIN(phase);\
+        }while(0)
+
+#define  kf_cexp2(x,phase) \
+   do{ \
+      (x)->r = TRIG_UPSCALE*celt_cos_norm((phase));\
+      (x)->i = TRIG_UPSCALE*celt_cos_norm((phase)-32768);\
+}while(0)
+
+#endif /* KISS_FFT_GUTS_H */

src/modules/ZoomIt/ZoomIt/rnnoise/arch.h

@@ -0,0 +1,261 @@
+/* Copyright (c) 2003-2008 Jean-Marc Valin
+   Copyright (c) 2007-2008 CSIRO
+   Copyright (c) 2007-2009 Xiph.Org Foundation
+   Written by Jean-Marc Valin */
+/**
+   @file arch.h
+   @brief Various architecture definitions for CELT
+*/
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef ARCH_H
+#define ARCH_H
+
+#include "opus_types.h"
+#include "common.h"
+
+# if !defined(__GNUC_PREREQ)
+#  if defined(__GNUC__)&&defined(__GNUC_MINOR__)
+#   define __GNUC_PREREQ(_maj,_min) \
+ ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
+#  else
+#   define __GNUC_PREREQ(_maj,_min) 0
+#  endif
+# endif
+
+#define CELT_SIG_SCALE 32768.f
+
+#define celt_fatal(str) _celt_fatal(str, __FILE__, __LINE__);
+#ifdef ENABLE_ASSERTIONS
+#include <stdio.h>
+#include <stdlib.h>
+#ifdef __GNUC__
+__attribute__((noreturn))
+#endif
+static OPUS_INLINE void _celt_fatal(const char *str, const char *file, int line)
+{
+   fprintf (stderr, "Fatal (internal) error in %s, line %d: %s\n", file, line, str);
+   abort();
+}
+#define celt_assert(cond) {if (!(cond)) {celt_fatal("assertion failed: " #cond);}}
+#define celt_assert2(cond, message) {if (!(cond)) {celt_fatal("assertion failed: " #cond "\n" message);}}
+#else
+#define celt_assert(cond)
+#define celt_assert2(cond, message)
+#endif
+
+#define IMUL32(a,b) ((a)*(b))
+
+#define MIN16(a,b) ((a) < (b) ? (a) : (b))   /**< Minimum 16-bit value.   */
+#define MAX16(a,b) ((a) > (b) ? (a) : (b))   /**< Maximum 16-bit value.   */
+#define MIN32(a,b) ((a) < (b) ? (a) : (b))   /**< Minimum 32-bit value.   */
+#define MAX32(a,b) ((a) > (b) ? (a) : (b))   /**< Maximum 32-bit value.   */
+#define IMIN(a,b) ((a) < (b) ? (a) : (b))   /**< Minimum int value.   */
+#define IMAX(a,b) ((a) > (b) ? (a) : (b))   /**< Maximum int value.   */
+#define UADD32(a,b) ((a)+(b))
+#define USUB32(a,b) ((a)-(b))
+
+/* Set this if opus_int64 is a native type of the CPU. */
+/* Assume that all LP64 architectures have fast 64-bit types; also x86_64
+   (which can be ILP32 for x32) and Win64 (which is LLP64). */
+#if defined(__x86_64__) || defined(__LP64__) || defined(_WIN64)
+#define OPUS_FAST_INT64 1
+#else
+#define OPUS_FAST_INT64 0
+#endif
+
+#define PRINT_MIPS(file)
+
+#ifdef FIXED_POINT
+
+typedef opus_int16 opus_val16;
+typedef opus_int32 opus_val32;
+typedef opus_int64 opus_val64;
+
+typedef opus_val32 celt_sig;
+typedef opus_val16 celt_norm;
+typedef opus_val32 celt_ener;
+
+#define Q15ONE 32767
+
+#define SIG_SHIFT 12
+/* Safe saturation value for 32-bit signals. Should be less than
+   2^31*(1-0.85) to avoid blowing up on DC at deemphasis.*/
+#define SIG_SAT (300000000)
+
+#define NORM_SCALING 16384
+
+#define DB_SHIFT 10
+
+#define EPSILON 1
+#define VERY_SMALL 0
+#define VERY_LARGE16 ((opus_val16)32767)
+#define Q15_ONE ((opus_val16)32767)
+
+#define SCALEIN(a)      (a)
+#define SCALEOUT(a)     (a)
+
+#define ABS16(x) ((x) < 0 ? (-(x)) : (x))
+#define ABS32(x) ((x) < 0 ? (-(x)) : (x))
+
+static OPUS_INLINE opus_int16 SAT16(opus_int32 x) {
+   return x > 32767 ? 32767 : x < -32768 ? -32768 : (opus_int16)x;
+}
+
+#ifdef FIXED_DEBUG
+#include "fixed_debug.h"
+#else
+
+#include "fixed_generic.h"
+
+#ifdef OPUS_ARM_PRESUME_AARCH64_NEON_INTR
+#include "arm/fixed_arm64.h"
+#elif OPUS_ARM_INLINE_EDSP
+#include "arm/fixed_armv5e.h"
+#elif defined (OPUS_ARM_INLINE_ASM)
+#include "arm/fixed_armv4.h"
+#elif defined (BFIN_ASM)
+#include "fixed_bfin.h"
+#elif defined (TI_C5X_ASM)
+#include "fixed_c5x.h"
+#elif defined (TI_C6X_ASM)
+#include "fixed_c6x.h"
+#endif
+
+#endif
+
+#else /* FIXED_POINT */
+
+typedef float opus_val16;
+typedef float opus_val32;
+typedef float opus_val64;
+
+typedef float celt_sig;
+typedef float celt_norm;
+typedef float celt_ener;
+
+#ifdef FLOAT_APPROX
+/* This code should reliably detect NaN/inf even when -ffast-math is used.
+   Assumes IEEE 754 format. */
+static OPUS_INLINE int celt_isnan(float x)
+{
+   union {float f; opus_uint32 i;} in;
+   in.f = x;
+   return ((in.i>>23)&0xFF)==0xFF && (in.i&0x007FFFFF)!=0;
+}
+#else
+#ifdef __FAST_MATH__
+#error Cannot build libopus with -ffast-math unless FLOAT_APPROX is defined. This could result in crashes on extreme (e.g. NaN) input
+#endif
+#define celt_isnan(x) ((x)!=(x))
+#endif
+
+#define Q15ONE 1.0f
+
+#define NORM_SCALING 1.f
+
+#define EPSILON 1e-15f
+#define VERY_SMALL 1e-30f
+#define VERY_LARGE16 1e15f
+#define Q15_ONE ((opus_val16)1.f)
+
+/* This appears to be the same speed as C99's fabsf() but it's more portable. */
+#define ABS16(x) ((float)fabs(x))
+#define ABS32(x) ((float)fabs(x))
+
+#define QCONST16(x,bits) (x)
+#define QCONST32(x,bits) (x)
+
+#define NEG16(x) (-(x))
+#define NEG32(x) (-(x))
+#define NEG32_ovflw(x) (-(x))
+#define EXTRACT16(x) (x)
+#define EXTEND32(x) (x)
+#define SHR16(a,shift) (a)
+#define SHL16(a,shift) (a)
+#define SHR32(a,shift) (a)
+#define SHL32(a,shift) (a)
+#define PSHR32(a,shift) (a)
+#define VSHR32(a,shift) (a)
+
+#define PSHR(a,shift)   (a)
+#define SHR(a,shift)    (a)
+#define SHL(a,shift)    (a)
+#define SATURATE(x,a)   (x)
+#define SATURATE16(x)   (x)
+
+#define ROUND16(a,shift)  (a)
+#define SROUND16(a,shift) (a)
+#define HALF16(x)       (.5f*(x))
+#define HALF32(x)       (.5f*(x))
+
+#define ADD16(a,b) ((a)+(b))
+#define SUB16(a,b) ((a)-(b))
+#define ADD32(a,b) ((a)+(b))
+#define SUB32(a,b) ((a)-(b))
+#define ADD32_ovflw(a,b) ((a)+(b))
+#define SUB32_ovflw(a,b) ((a)-(b))
+#define MULT16_16_16(a,b)     ((a)*(b))
+#define MULT16_16(a,b)     ((opus_val32)(a)*(opus_val32)(b))
+#define MAC16_16(c,a,b)     ((c)+(opus_val32)(a)*(opus_val32)(b))
+
+#define MULT16_32_Q15(a,b)     ((a)*(b))
+#define MULT16_32_Q16(a,b)     ((a)*(b))
+
+#define MULT32_32_Q31(a,b)     ((a)*(b))
+
+#define MAC16_32_Q15(c,a,b)     ((c)+(a)*(b))
+#define MAC16_32_Q16(c,a,b)     ((c)+(a)*(b))
+
+#define MULT16_16_Q11_32(a,b)     ((a)*(b))
+#define MULT16_16_Q11(a,b)     ((a)*(b))
+#define MULT16_16_Q13(a,b)     ((a)*(b))
+#define MULT16_16_Q14(a,b)     ((a)*(b))
+#define MULT16_16_Q15(a,b)     ((a)*(b))
+#define MULT16_16_P15(a,b)     ((a)*(b))
+#define MULT16_16_P13(a,b)     ((a)*(b))
+#define MULT16_16_P14(a,b)     ((a)*(b))
+#define MULT16_32_P16(a,b)     ((a)*(b))
+
+#define DIV32_16(a,b)     (((opus_val32)(a))/(opus_val16)(b))
+#define DIV32(a,b)     (((opus_val32)(a))/(opus_val32)(b))
+
+#define SCALEIN(a)      ((a)*CELT_SIG_SCALE)
+#define SCALEOUT(a)     ((a)*(1/CELT_SIG_SCALE))
+
+#define SIG2WORD16(x) (x)
+
+#endif /* !FIXED_POINT */
+
+#ifndef GLOBAL_STACK_SIZE
+#ifdef FIXED_POINT
+#define GLOBAL_STACK_SIZE 120000
+#else
+#define GLOBAL_STACK_SIZE 120000
+#endif
+#endif
+
+#endif /* ARCH_H */

src/modules/ZoomIt/ZoomIt/rnnoise/celt_lpc.c

@@ -0,0 +1,174 @@
+/* Copyright (c) 2009-2010 Xiph.Org Foundation
+   Written by Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "celt_lpc.h"
+#include "arch.h"
+#include "common.h"
+#include "pitch.h"
+#include "denoise.h"
+
+void rnn_lpc(
+      opus_val16       *_lpc, /* out: [0...p-1] LPC coefficients      */
+const opus_val32 *ac,  /* in:  [0...p] autocorrelation values  */
+int          p
+)
+{
+   int i, j;
+   opus_val32 r;
+   opus_val32 error = ac[0];
+#ifdef FIXED_POINT
+   opus_val32 lpc[LPC_ORDER];
+#else
+   float *lpc = _lpc;
+#endif
+
+   RNN_CLEAR(lpc, p);
+   if (ac[0] != 0)
+   {
+      for (i = 0; i < p; i++) {
+         /* Sum up this iteration's reflection coefficient */
+         opus_val32 rr = 0;
+         for (j = 0; j < i; j++)
+            rr += MULT32_32_Q31(lpc[j],ac[i - j]);
+         rr += SHR32(ac[i + 1],3);
+         r = -SHL32(rr,3)/error;
+         /*  Update LPC coefficients and total error */
+         lpc[i] = SHR32(r,3);
+         for (j = 0; j < (i+1)>>1; j++)
+         {
+            opus_val32 tmp1, tmp2;
+            tmp1 = lpc[j];
+            tmp2 = lpc[i-1-j];
+            lpc[j]     = tmp1 + MULT32_32_Q31(r,tmp2);
+            lpc[i-1-j] = tmp2 + MULT32_32_Q31(r,tmp1);
+         }
+
+         error = error - MULT32_32_Q31(MULT32_32_Q31(r,r),error);
+         /* Bail out once we get 30 dB gain */
+#ifdef FIXED_POINT
+         if (error<SHR32(ac[0],10))
+            break;
+#else
+         if (error<.001f*ac[0])
+            break;
+#endif
+      }
+   }
+#ifdef FIXED_POINT
+   for (i=0;i<p;i++)
+      _lpc[i] = ROUND16(lpc[i],16);
+#endif
+}
+
+
+int rnn_autocorr(
+                   const opus_val16 *x,   /*  in: [0...n-1] samples x   */
+                   opus_val32       *ac,  /* out: [0...lag-1] ac values */
+                   const opus_val16       *window,
+                   int          overlap,
+                   int          lag,
+                   int          n)
+{
+   opus_val32 d;
+   int i, k;
+   int fastN=n-lag;
+   int shift;
+   const opus_val16 *xptr;
+   opus_val16 xx[PITCH_BUF_SIZE/2];
+   celt_assert(n>0);
+   celt_assert(n<=PITCH_BUF_SIZE/2)
+   celt_assert(overlap>=0);
+   if (overlap == 0)
+   {
+      xptr = x;
+   } else {
+      for (i=0;i<n;i++)
+         xx[i] = x[i];
+      for (i=0;i<overlap;i++)
+      {
+         xx[i] = MULT16_16_Q15(x[i],window[i]);
+         xx[n-i-1] = MULT16_16_Q15(x[n-i-1],window[i]);
+      }
+      xptr = xx;
+   }
+   shift=0;
+#ifdef FIXED_POINT
+   {
+      opus_val32 ac0;
+      ac0 = 1+(n<<7);
+      if (n&1) ac0 += SHR32(MULT16_16(xptr[0],xptr[0]),9);
+      for(i=(n&1);i<n;i+=2)
+      {
+         ac0 += SHR32(MULT16_16(xptr[i],xptr[i]),9);
+         ac0 += SHR32(MULT16_16(xptr[i+1],xptr[i+1]),9);
+      }
+
+      shift = celt_ilog2(ac0)-30+10;
+      shift = (shift)/2;
+      if (shift>0)
+      {
+         for(i=0;i<n;i++)
+            xx[i] = PSHR32(xptr[i], shift);
+         xptr = xx;
+      } else
+         shift = 0;
+   }
+#endif
+   rnn_pitch_xcorr(xptr, xptr, ac, fastN, lag+1);
+   for (k=0;k<=lag;k++)
+   {
+      for (i = k+fastN, d = 0; i < n; i++)
+         d = MAC16_16(d, xptr[i], xptr[i-k]);
+      ac[k] += d;
+   }
+#ifdef FIXED_POINT
+   shift = 2*shift;
+   if (shift<=0)
+      ac[0] += SHL32((opus_int32)1, -shift);
+   if (ac[0] < 268435456)
+   {
+      int shift2 = 29 - EC_ILOG(ac[0]);
+      for (i=0;i<=lag;i++)
+         ac[i] = SHL32(ac[i], shift2);
+      shift -= shift2;
+   } else if (ac[0] >= 536870912)
+   {
+      int shift2=1;
+      if (ac[0] >= 1073741824)
+         shift2++;
+      for (i=0;i<=lag;i++)
+         ac[i] = SHR32(ac[i], shift2);
+      shift += shift2;
+   }
+#endif
+
+   return shift;
+}

src/modules/ZoomIt/ZoomIt/rnnoise/celt_lpc.h

@@ -0,0 +1,45 @@
+/* Copyright (c) 2009-2010 Xiph.Org Foundation
+   Written by Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef PLC_H
+#define PLC_H
+
+#include "arch.h"
+#include "common.h"
+
+#if defined(OPUS_X86_MAY_HAVE_SSE4_1)
+#include "x86/celt_lpc_sse.h"
+#endif
+
+#define LPC_ORDER 24
+
+void rnn_lpc(opus_val16 *_lpc, const opus_val32 *ac, int p);
+
+int rnn_autocorr(const opus_val16 *x, opus_val32 *ac,
+         const opus_val16 *window, int overlap, int lag, int n);
+
+#endif /* PLC_H */

src/modules/ZoomIt/ZoomIt/rnnoise/common.h

@@ -0,0 +1,56 @@
+
+
+#ifndef COMMON_H
+#define COMMON_H
+
+#include "stdlib.h"
+#include "string.h"
+
+#define RNN_INLINE inline
+#define OPUS_INLINE inline
+
+
+/** RNNoise wrapper for malloc(). To do your own dynamic allocation, all you need t
+o do is replace this function and rnnoise_free */
+#ifndef OVERRIDE_RNNOISE_ALLOC
+static RNN_INLINE void *rnnoise_alloc (size_t size)
+{
+   return malloc(size);
+}
+#endif
+
+/** RNNoise wrapper for free(). To do your own dynamic allocation, all you need to do is replace this function and rnnoise_alloc */
+#ifndef OVERRIDE_RNNOISE_FREE
+static RNN_INLINE void rnnoise_free (void *ptr)
+{
+   free(ptr);
+}
+#endif
+
+/** Copy n elements from src to dst. The 0* term provides compile-time type checking  */
+#ifndef OVERRIDE_RNN_COPY
+#define RNN_COPY(dst, src, n) (memcpy((dst), (src), (n)*sizeof(*(dst)) + 0*((dst)-(src)) ))
+#endif
+
+/** Copy n elements from src to dst, allowing overlapping regions. The 0* term
+    provides compile-time type checking */
+#ifndef OVERRIDE_RNN_MOVE
+#define RNN_MOVE(dst, src, n) (memmove((dst), (src), (n)*sizeof(*(dst)) + 0*((dst)-(src)) ))
+#endif
+
+/** Set n elements of dst to zero */
+#ifndef OVERRIDE_RNN_CLEAR
+#define RNN_CLEAR(dst, n) (memset((dst), 0, (n)*sizeof(*(dst))))
+#endif
+
+# if !defined(OPUS_GNUC_PREREQ)
+#  if defined(__GNUC__)&&defined(__GNUC_MINOR__)
+#   define OPUS_GNUC_PREREQ(_maj,_min) \
+ ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
+#  else
+#   define OPUS_GNUC_PREREQ(_maj,_min) 0
+#  endif
+# endif
+
+
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/cpu_support.h

@@ -0,0 +1,53 @@
+/* Copyright (c) 2010 Xiph.Org Foundation
+ * Copyright (c) 2013 Parrot */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef CPU_SUPPORT_H
+#define CPU_SUPPORT_H
+
+#include "opus_types.h"
+#include "common.h"
+
+#ifdef RNN_ENABLE_X86_RTCD
+
+#include "x86/x86cpu.h"
+/* We currently support 5 x86 variants:
+ * arch[0] -> sse2
+ * arch[1] -> sse4.1
+ * arch[2] -> avx2
+ */
+#define OPUS_ARCHMASK 3
+int rnn_select_arch(void);
+
+#else
+#define OPUS_ARCHMASK 0
+
+static OPUS_INLINE int rnn_select_arch(void)
+{
+  return 0;
+}
+#endif
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/denoise.c

@@ -0,0 +1,505 @@
+/* Copyright (c) 2024 Jean-Marc Valin
+ * Copyright (c) 2018 Gregor Richards
+ * Copyright (c) 2017 Mozilla */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+#include "kiss_fft.h"
+#include "common.h"
+#include "denoise.h"
+#include <math.h>
+#include "rnnoise.h"
+#include "pitch.h"
+#include "arch.h"
+#include "rnn.h"
+#include "cpu_support.h"
+
+#define SQUARE(x) ((x)*(x))
+
+
+#ifndef TRAINING
+#define TRAINING 0
+#endif
+
+
+/* ERB bandwidths going in reverse from 20 kHz and then replacing the 700 and 800
+   with just 750 because having 32 bands is convenient for the DNN. 
+   B(1)=400;
+   for k=2:35
+     B(k) = B(k-1) - max(2, round(24.7*(4.37*B(k-1)/20+1)/50));
+   end
+   printf("%d, ", B(end:-1:1));
+   printf("\n")
+*/
+const int eband20ms[NB_BANDS+2] = {
+/*0 100 200 300 400 500 600 750 900 1.1 1.2 1.4 1.6 1.8 2.1 2.4 2.7 3.0 3.4 3.9 4.4 4.9  5.5  6.2  7.0  7.9  8.8  9.9 11.2 12.6 14.1 15.9 17.8 20.0*/
+  0, 2,  4,  6,  8,  10, 12, 15, 18, 21, 24, 28, 32, 36, 41, 47, 53, 60, 68, 77, 87, 98, 110, 124, 140, 157, 176, 198, 223, 251, 282, 317, 356, 400};
+
+
+struct DenoiseState {
+  RNNoise model;
+#if !TRAINING
+  int arch;
+#endif
+  float analysis_mem[FRAME_SIZE];
+  int memid;
+  float synthesis_mem[FRAME_SIZE];
+  float pitch_buf[PITCH_BUF_SIZE];
+  float pitch_enh_buf[PITCH_BUF_SIZE];
+  float last_gain;
+  int last_period;
+  float mem_hp_x[2];
+  float lastg[NB_BANDS];
+  RNNState rnn;
+  kiss_fft_cpx delayed_X[FREQ_SIZE];
+  kiss_fft_cpx delayed_P[FREQ_SIZE];
+  float delayed_Ex[NB_BANDS], delayed_Ep[NB_BANDS];
+  float delayed_Exp[NB_BANDS];
+
+};
+
+static void compute_band_energy(float *bandE, const kiss_fft_cpx *X) {
+  int i;
+  float sum[NB_BANDS+2] = {0};
+  for (i=0;i<NB_BANDS+1;i++)
+  {
+    int j;
+    int band_size;
+    band_size = eband20ms[i+1]-eband20ms[i];
+    for (j=0;j<band_size;j++) {
+      float tmp;
+      float frac = (float)j/band_size;
+      tmp = SQUARE(X[eband20ms[i] + j].r);
+      tmp += SQUARE(X[eband20ms[i] + j].i);
+      sum[i] += (1-frac)*tmp;
+      sum[i+1] += frac*tmp;
+    }
+  }
+  sum[1] = (sum[0]+sum[1])*2/3;
+  sum[NB_BANDS] = (sum[NB_BANDS]+sum[NB_BANDS+1])*2/3;
+  for (i=0;i<NB_BANDS;i++)
+  {
+    bandE[i] = sum[i+1];
+  }
+}
+
+static void compute_band_corr(float *bandE, const kiss_fft_cpx *X, const kiss_fft_cpx *P) {
+  int i;
+  float sum[NB_BANDS+2] = {0};
+  for (i=0;i<NB_BANDS+1;i++)
+  {
+    int j;
+    int band_size;
+    band_size = eband20ms[i+1]-eband20ms[i];
+    for (j=0;j<band_size;j++) {
+      float tmp;
+      float frac = (float)j/band_size;
+      tmp = X[eband20ms[i] + j].r * P[eband20ms[i] + j].r;
+      tmp += X[eband20ms[i] + j].i * P[eband20ms[i] + j].i;
+      sum[i] += (1-frac)*tmp;
+      sum[i+1] += frac*tmp;
+    }
+  }
+  sum[1] = (sum[0]+sum[1])*2/3;
+  sum[NB_BANDS] = (sum[NB_BANDS]+sum[NB_BANDS+1])*2/3;
+  for (i=0;i<NB_BANDS;i++)
+  {
+    bandE[i] = sum[i+1];
+  }
+}
+
+static void interp_band_gain(float *g, const float *bandE) {
+  int i,j;
+  memset(g, 0, FREQ_SIZE);
+  for (i=1;i<NB_BANDS;i++)
+  {
+    int band_size;
+    band_size = eband20ms[i+1]-eband20ms[i];
+    for (j=0;j<band_size;j++) {
+      float frac = (float)j/band_size;
+      g[eband20ms[i] + j] = (1-frac)*bandE[i-1] + frac*bandE[i];
+    }
+  }
+  for (j=0;j<eband20ms[1];j++) g[j] = bandE[0];
+  for (j=eband20ms[NB_BANDS];j<eband20ms[NB_BANDS+1];j++) g[j] = bandE[NB_BANDS-1];
+}
+
+extern const float rnn_dct_table[];
+extern const kiss_fft_state rnn_kfft;
+extern const float rnn_half_window[];
+
+static void dct(float *out, const float *in) {
+  int i;
+  for (i=0;i<NB_BANDS;i++) {
+    int j;
+    float sum = 0;
+    for (j=0;j<NB_BANDS;j++) {
+      sum += in[j] * rnn_dct_table[j*NB_BANDS + i];
+    }
+    out[i] = sum*sqrt(2./22);
+  }
+}
+
+#if 0
+static void idct(float *out, const float *in) {
+  int i;
+  for (i=0;i<NB_BANDS;i++) {
+    int j;
+    float sum = 0;
+    for (j=0;j<NB_BANDS;j++) {
+      sum += in[j] * rnn_dct_table[i*NB_BANDS + j];
+    }
+    out[i] = sum*sqrt(2./22);
+  }
+}
+#endif
+
+static void forward_transform(kiss_fft_cpx *out, const float *in) {
+  int i;
+  kiss_fft_cpx x[WINDOW_SIZE];
+  kiss_fft_cpx y[WINDOW_SIZE];
+  for (i=0;i<WINDOW_SIZE;i++) {
+    x[i].r = in[i];
+    x[i].i = 0;
+  }
+  rnn_fft(&rnn_kfft, x, y, 0);
+  for (i=0;i<FREQ_SIZE;i++) {
+    out[i] = y[i];
+  }
+}
+
+static void inverse_transform(float *out, const kiss_fft_cpx *in) {
+  int i;
+  kiss_fft_cpx x[WINDOW_SIZE];
+  kiss_fft_cpx y[WINDOW_SIZE];
+  for (i=0;i<FREQ_SIZE;i++) {
+    x[i] = in[i];
+  }
+  for (;i<WINDOW_SIZE;i++) {
+    x[i].r = x[WINDOW_SIZE - i].r;
+    x[i].i = -x[WINDOW_SIZE - i].i;
+  }
+  rnn_fft(&rnn_kfft, x, y, 0);
+  /* output in reverse order for IFFT. */
+  out[0] = WINDOW_SIZE*y[0].r;
+  for (i=1;i<WINDOW_SIZE;i++) {
+    out[i] = WINDOW_SIZE*y[WINDOW_SIZE - i].r;
+  }
+}
+
+static void apply_window(float *x) {
+  int i;
+  for (i=0;i<FRAME_SIZE;i++) {
+    x[i] *= rnn_half_window[i];
+    x[WINDOW_SIZE - 1 - i] *= rnn_half_window[i];
+  }
+}
+
+struct RNNModel {
+  /* Set either blob or const_blob. */
+  const void *const_blob;
+  void *blob;
+  int blob_len;
+  FILE *file;
+};
+
+RNNModel *rnnoise_model_from_buffer(const void *ptr, int len) {
+  RNNModel *model;
+  model = malloc(sizeof(*model));
+  model->blob = NULL;
+  model->const_blob = ptr;
+  model->blob_len = len;
+  return model;
+}
+
+RNNModel *rnnoise_model_from_filename(const char *filename) {
+  RNNModel *model;
+  FILE *f = fopen(filename, "rb");
+  model = rnnoise_model_from_file(f);
+  model->file = f;
+  return model;
+}
+
+RNNModel *rnnoise_model_from_file(FILE *f) {
+  RNNModel *model;
+  model = malloc(sizeof(*model));
+  model->file = NULL;
+
+  fseek(f, 0, SEEK_END);
+  model->blob_len = ftell(f);
+  fseek(f, 0, SEEK_SET);
+
+  model->const_blob = NULL;
+  model->blob = malloc(model->blob_len);
+  if (fread(model->blob, model->blob_len, 1, f) != 1)
+  {
+    rnnoise_model_free(model);
+    return NULL;
+  }
+  return model;
+}
+
+void rnnoise_model_free(RNNModel *model) {
+  if (model->file != NULL) fclose(model->file);
+  if (model->blob != NULL) free(model->blob);
+  free(model);
+}
+
+int rnnoise_get_size(void) {
+  return sizeof(DenoiseState);
+}
+
+int rnnoise_get_frame_size(void) {
+  return FRAME_SIZE;
+}
+
+int rnnoise_init(DenoiseState *st, RNNModel *model) {
+  memset(st, 0, sizeof(*st));
+#if !TRAINING
+  if (model != NULL) {
+    WeightArray *list;
+    int ret = 1;
+    parse_weights(&list, model->blob ? model->blob : model->const_blob, model->blob_len);
+    if (list != NULL) {
+      ret = init_rnnoise(&st->model, list);
+      opus_free(list);
+    }
+    if (ret != 0) return -1;
+  }
+#ifndef USE_WEIGHTS_FILE
+  else {
+    int ret = init_rnnoise(&st->model, rnnoise_arrays);
+    if (ret != 0) return -1;
+  }
+#endif
+  st->arch = rnn_select_arch();
+#else
+  (void)model;
+#endif
+  return 0;
+}
+
+DenoiseState *rnnoise_create(RNNModel *model) {
+  int ret;
+  DenoiseState *st;
+  st = malloc(rnnoise_get_size());
+  ret = rnnoise_init(st, model);
+  if (ret != 0) {
+    free(st);
+    return NULL;
+  }
+  return st;
+}
+
+void rnnoise_destroy(DenoiseState *st) {
+  free(st);
+}
+
+#if TRAINING
+extern int lowpass;
+extern int band_lp;
+#endif
+
+void rnn_frame_analysis(DenoiseState *st, kiss_fft_cpx *X, float *Ex, const float *in) {
+  int i;
+  float x[WINDOW_SIZE];
+  RNN_COPY(x, st->analysis_mem, FRAME_SIZE);
+  for (i=0;i<FRAME_SIZE;i++) x[FRAME_SIZE + i] = in[i];
+  RNN_COPY(st->analysis_mem, in, FRAME_SIZE);
+  apply_window(x);
+  forward_transform(X, x);
+#if TRAINING
+  for (i=lowpass;i<FREQ_SIZE;i++)
+    X[i].r = X[i].i = 0;
+#endif
+  compute_band_energy(Ex, X);
+}
+
+int rnn_compute_frame_features(DenoiseState *st, kiss_fft_cpx *X, kiss_fft_cpx *P,
+                                  float *Ex, float *Ep, float *Exp, float *features, const float *in) {
+  int i;
+  float E = 0;
+  float Ly[NB_BANDS];
+  float p[WINDOW_SIZE];
+  float pitch_buf[PITCH_BUF_SIZE>>1];
+  int pitch_index;
+  float gain;
+  float *(pre[1]);
+  float follow, logMax;
+  rnn_frame_analysis(st, X, Ex, in);
+  RNN_MOVE(st->pitch_buf, &st->pitch_buf[FRAME_SIZE], PITCH_BUF_SIZE-FRAME_SIZE);
+  RNN_COPY(&st->pitch_buf[PITCH_BUF_SIZE-FRAME_SIZE], in, FRAME_SIZE);
+  pre[0] = &st->pitch_buf[0];
+  rnn_pitch_downsample(pre, pitch_buf, PITCH_BUF_SIZE, 1);
+  rnn_pitch_search(pitch_buf+(PITCH_MAX_PERIOD>>1), pitch_buf, PITCH_FRAME_SIZE,
+               PITCH_MAX_PERIOD-3*PITCH_MIN_PERIOD, &pitch_index);
+  pitch_index = PITCH_MAX_PERIOD-pitch_index;
+
+  gain = rnn_remove_doubling(pitch_buf, PITCH_MAX_PERIOD, PITCH_MIN_PERIOD,
+          PITCH_FRAME_SIZE, &pitch_index, st->last_period, st->last_gain);
+  st->last_period = pitch_index;
+  st->last_gain = gain;
+  for (i=0;i<WINDOW_SIZE;i++)
+    p[i] = st->pitch_buf[PITCH_BUF_SIZE-WINDOW_SIZE-pitch_index+i];
+  apply_window(p);
+  forward_transform(P, p);
+  compute_band_energy(Ep, P);
+  compute_band_corr(Exp, X, P);
+  for (i=0;i<NB_BANDS;i++) Exp[i] = Exp[i]/sqrt(.001+Ex[i]*Ep[i]);
+  dct(&features[NB_BANDS], Exp);
+  features[2*NB_BANDS] = .01*(pitch_index-300);
+  logMax = -2;
+  follow = -2;
+  for (i=0;i<NB_BANDS;i++) {
+    Ly[i] = log10(1e-2+Ex[i]);
+    Ly[i] = MAX16(logMax-7, MAX16(follow-1.5, Ly[i]));
+    logMax = MAX16(logMax, Ly[i]);
+    follow = MAX16(follow-1.5, Ly[i]);
+    E += Ex[i];
+  }
+  if (!TRAINING && E < 0.04) {
+    /* If there's no audio, avoid messing up the state. */
+    RNN_CLEAR(features, NB_FEATURES);
+    return 1;
+  }
+  dct(features, Ly);
+  features[0] -= 12;
+  features[1] -= 4;
+  return TRAINING && E < 0.1;
+}
+
+static void frame_synthesis(DenoiseState *st, float *out, const kiss_fft_cpx *y) {
+  float x[WINDOW_SIZE];
+  int i;
+  inverse_transform(x, y);
+  apply_window(x);
+  for (i=0;i<FRAME_SIZE;i++) out[i] = x[i] + st->synthesis_mem[i];
+  RNN_COPY(st->synthesis_mem, &x[FRAME_SIZE], FRAME_SIZE);
+}
+
+void rnn_biquad(float *y, float mem[2], const float *x, const float *b, const float *a, int N) {
+  int i;
+  for (i=0;i<N;i++) {
+    float xi, yi;
+    xi = x[i];
+    yi = x[i] + mem[0];
+    mem[0] = mem[1] + (b[0]*(double)xi - a[0]*(double)yi);
+    mem[1] = (b[1]*(double)xi - a[1]*(double)yi);
+    y[i] = yi;
+  }
+}
+
+void rnn_pitch_filter(kiss_fft_cpx *X, const kiss_fft_cpx *P, const float *Ex, const float *Ep,
+                  const float *Exp, const float *g) {
+  int i;
+  float r[NB_BANDS];
+  float rf[FREQ_SIZE] = {0};
+  float newE[NB_BANDS];
+  float norm[NB_BANDS];
+  float normf[FREQ_SIZE]={0};
+  for (i=0;i<NB_BANDS;i++) {
+#if 0
+    if (Exp[i]>g[i]) r[i] = 1;
+    else r[i] = Exp[i]*(1-g[i])/(.001 + g[i]*(1-Exp[i]));
+    r[i] = MIN16(1, MAX16(0, r[i]));
+#else
+    if (Exp[i]>g[i]) r[i] = 1;
+    else r[i] = SQUARE(Exp[i])*(1-SQUARE(g[i]))/(.001 + SQUARE(g[i])*(1-SQUARE(Exp[i])));
+    r[i] = sqrt(MIN16(1, MAX16(0, r[i])));
+#endif
+    r[i] *= sqrt(Ex[i]/(1e-8+Ep[i]));
+  }
+  interp_band_gain(rf, r);
+  for (i=0;i<FREQ_SIZE;i++) {
+    X[i].r += rf[i]*P[i].r;
+    X[i].i += rf[i]*P[i].i;
+  }
+  compute_band_energy(newE, X);
+  for (i=0;i<NB_BANDS;i++) {
+    norm[i] = sqrt(Ex[i]/(1e-8+newE[i]));
+  }
+  interp_band_gain(normf, norm);
+  for (i=0;i<FREQ_SIZE;i++) {
+    X[i].r *= normf[i];
+    X[i].i *= normf[i];
+  }
+}
+
+float rnnoise_process_frame(DenoiseState *st, float *out, const float *in) {
+  int i;
+  kiss_fft_cpx X[FREQ_SIZE];
+  kiss_fft_cpx P[FREQ_SIZE];
+  float x[FRAME_SIZE];
+  float Ex[NB_BANDS], Ep[NB_BANDS];
+  float Exp[NB_BANDS];
+  float features[NB_FEATURES];
+  float g[NB_BANDS];
+  float gf[FREQ_SIZE]={1};
+  float vad_prob = 0;
+  int silence;
+  static const float a_hp[2] = {-1.99599, 0.99600};
+  static const float b_hp[2] = {-2, 1};
+  rnn_biquad(x, st->mem_hp_x, in, b_hp, a_hp, FRAME_SIZE);
+  silence = rnn_compute_frame_features(st, X, P, Ex, Ep, Exp, features, x);
+
+  if (!silence) {
+#if !TRAINING
+    compute_rnn(&st->model, &st->rnn, g, &vad_prob, features, st->arch);
+#endif
+    rnn_pitch_filter(st->delayed_X, st->delayed_P, st->delayed_Ex, st->delayed_Ep, st->delayed_Exp, g);
+    for (i=0;i<NB_BANDS;i++) {
+      float alpha = .6f;
+      /* Cap the decay at 0.6 per frame, corresponding to an RT60 of 135 ms.
+         That avoids unnaturally quick attenuation. */
+      g[i] = MAX16(g[i], alpha*st->lastg[i]);
+      /* Compensate for energy change across frame when computing the threshold gain.
+         Avoids leaking noise when energy increases (e.g. transient noise). */
+      st->lastg[i] = MIN16(1.f, g[i]*(st->delayed_Ex[i]+1e-3)/(Ex[i]+1e-3));
+    }
+    interp_band_gain(gf, g);
+#if 1
+    for (i=0;i<FREQ_SIZE;i++) {
+      st->delayed_X[i].r *= gf[i];
+      st->delayed_X[i].i *= gf[i];
+    }
+#endif
+  }
+  frame_synthesis(st, out, st->delayed_X);
+
+  RNN_COPY(st->delayed_X, X, FREQ_SIZE);
+  RNN_COPY(st->delayed_P, P, FREQ_SIZE);
+  RNN_COPY(st->delayed_Ex, Ex, NB_BANDS);
+  RNN_COPY(st->delayed_Ep, Ep, NB_BANDS);
+  RNN_COPY(st->delayed_Exp, Exp, NB_BANDS);
+  return vad_prob;
+}
+

src/modules/ZoomIt/ZoomIt/rnnoise/denoise.h

@@ -0,0 +1,56 @@
+/* Copyright (c) 2017 Mozilla */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#include "rnnoise.h"
+#include "kiss_fft.h"
+#include "nnet.h"
+
+#define FRAME_SIZE 480
+#define WINDOW_SIZE (2*FRAME_SIZE)
+#define FREQ_SIZE (FRAME_SIZE + 1)
+#define NB_BANDS 32
+#define NB_FEATURES (2*NB_BANDS+1)
+
+
+#define PITCH_MIN_PERIOD 60
+#define PITCH_MAX_PERIOD 768
+#define PITCH_FRAME_SIZE 960
+#define PITCH_BUF_SIZE (PITCH_MAX_PERIOD+PITCH_FRAME_SIZE)
+
+extern const WeightArray rnnoise_arrays[];
+
+extern const int eband20ms[];
+
+
+void rnn_biquad(float *y, float mem[2], const float *x, const float *b, const float *a, int N);
+
+void rnn_pitch_filter(kiss_fft_cpx *X, const kiss_fft_cpx *P, const float *Ex, const float *Ep,
+                  const float *Exp, const float *g);
+
+void rnn_frame_analysis(DenoiseState *st, kiss_fft_cpx *X, float *Ex, const float *in);
+
+int rnn_compute_frame_features(DenoiseState *st, kiss_fft_cpx *X, kiss_fft_cpx *P,
+                                  float *Ex, float *Ep, float *Exp, float *features, const float *in);

src/modules/ZoomIt/ZoomIt/rnnoise/kiss_fft.c

@@ -0,0 +1,601 @@
+/*Copyright (c) 2003-2004, Mark Borgerding
+  Lots of modifications by Jean-Marc Valin
+  Copyright (c) 2005-2007, Xiph.Org Foundation
+  Copyright (c) 2008,      Xiph.Org Foundation, CSIRO
+
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.*/
+
+/* This code is originally from Mark Borgerding's KISS-FFT but has been
+   heavily modified to better suit Opus */
+
+#ifndef SKIP_CONFIG_H
+#  ifdef HAVE_CONFIG_H
+#    include "config.h"
+#  endif
+#endif
+
+#include "_kiss_fft_guts.h"
+#define CUSTOM_MODES
+
+/* The guts header contains all the multiplication and addition macros that are defined for
+   complex numbers.  It also declares the kf_ internal functions.
+*/
+
+static void kf_bfly2(
+                     kiss_fft_cpx * Fout,
+                     int m,
+                     int N
+                    )
+{
+   kiss_fft_cpx * Fout2;
+   int i;
+   (void)m;
+#ifdef CUSTOM_MODES
+   if (m==1)
+   {
+      celt_assert(m==1);
+      for (i=0;i<N;i++)
+      {
+         kiss_fft_cpx t;
+         Fout2 = Fout + 1;
+         t = *Fout2;
+         C_SUB( *Fout2 ,  *Fout , t );
+         C_ADDTO( *Fout ,  t );
+         Fout += 2;
+      }
+   } else
+#endif
+   {
+      opus_val16 tw;
+      tw = QCONST16(0.7071067812f, 15);
+      /* We know that m==4 here because the radix-2 is just after a radix-4 */
+      celt_assert(m==4);
+      for (i=0;i<N;i++)
+      {
+         kiss_fft_cpx t;
+         Fout2 = Fout + 4;
+         t = Fout2[0];
+         C_SUB( Fout2[0] ,  Fout[0] , t );
+         C_ADDTO( Fout[0] ,  t );
+
+         t.r = S_MUL(ADD32_ovflw(Fout2[1].r, Fout2[1].i), tw);
+         t.i = S_MUL(SUB32_ovflw(Fout2[1].i, Fout2[1].r), tw);
+         C_SUB( Fout2[1] ,  Fout[1] , t );
+         C_ADDTO( Fout[1] ,  t );
+
+         t.r = Fout2[2].i;
+         t.i = -Fout2[2].r;
+         C_SUB( Fout2[2] ,  Fout[2] , t );
+         C_ADDTO( Fout[2] ,  t );
+
+         t.r = S_MUL(SUB32_ovflw(Fout2[3].i, Fout2[3].r), tw);
+         t.i = S_MUL(NEG32_ovflw(ADD32_ovflw(Fout2[3].i, Fout2[3].r)), tw);
+         C_SUB( Fout2[3] ,  Fout[3] , t );
+         C_ADDTO( Fout[3] ,  t );
+         Fout += 8;
+      }
+   }
+}
+
+static void kf_bfly4(
+                     kiss_fft_cpx * Fout,
+                     const size_t fstride,
+                     const kiss_fft_state *st,
+                     int m,
+                     int N,
+                     int mm
+                    )
+{
+   int i;
+
+   if (m==1)
+   {
+      /* Degenerate case where all the twiddles are 1. */
+      for (i=0;i<N;i++)
+      {
+         kiss_fft_cpx scratch0, scratch1;
+
+         C_SUB( scratch0 , *Fout, Fout[2] );
+         C_ADDTO(*Fout, Fout[2]);
+         C_ADD( scratch1 , Fout[1] , Fout[3] );
+         C_SUB( Fout[2], *Fout, scratch1 );
+         C_ADDTO( *Fout , scratch1 );
+         C_SUB( scratch1 , Fout[1] , Fout[3] );
+
+         Fout[1].r = ADD32_ovflw(scratch0.r, scratch1.i);
+         Fout[1].i = SUB32_ovflw(scratch0.i, scratch1.r);
+         Fout[3].r = SUB32_ovflw(scratch0.r, scratch1.i);
+         Fout[3].i = ADD32_ovflw(scratch0.i, scratch1.r);
+         Fout+=4;
+      }
+   } else {
+      int j;
+      kiss_fft_cpx scratch[6];
+      const kiss_twiddle_cpx *tw1,*tw2,*tw3;
+      const int m2=2*m;
+      const int m3=3*m;
+      kiss_fft_cpx * Fout_beg = Fout;
+      for (i=0;i<N;i++)
+      {
+         Fout = Fout_beg + i*mm;
+         tw3 = tw2 = tw1 = st->twiddles;
+         /* m is guaranteed to be a multiple of 4. */
+         for (j=0;j<m;j++)
+         {
+            C_MUL(scratch[0],Fout[m] , *tw1 );
+            C_MUL(scratch[1],Fout[m2] , *tw2 );
+            C_MUL(scratch[2],Fout[m3] , *tw3 );
+
+            C_SUB( scratch[5] , *Fout, scratch[1] );
+            C_ADDTO(*Fout, scratch[1]);
+            C_ADD( scratch[3] , scratch[0] , scratch[2] );
+            C_SUB( scratch[4] , scratch[0] , scratch[2] );
+            C_SUB( Fout[m2], *Fout, scratch[3] );
+            tw1 += fstride;
+            tw2 += fstride*2;
+            tw3 += fstride*3;
+            C_ADDTO( *Fout , scratch[3] );
+
+            Fout[m].r = ADD32_ovflw(scratch[5].r, scratch[4].i);
+            Fout[m].i = SUB32_ovflw(scratch[5].i, scratch[4].r);
+            Fout[m3].r = SUB32_ovflw(scratch[5].r, scratch[4].i);
+            Fout[m3].i = ADD32_ovflw(scratch[5].i, scratch[4].r);
+            ++Fout;
+         }
+      }
+   }
+}
+
+
+#ifndef RADIX_TWO_ONLY
+
+static void kf_bfly3(
+                     kiss_fft_cpx * Fout,
+                     const size_t fstride,
+                     const kiss_fft_state *st,
+                     int m,
+                     int N,
+                     int mm
+                    )
+{
+   int i;
+   size_t k;
+   const size_t m2 = 2*m;
+   const kiss_twiddle_cpx *tw1,*tw2;
+   kiss_fft_cpx scratch[5];
+   kiss_twiddle_cpx epi3;
+
+   kiss_fft_cpx * Fout_beg = Fout;
+#ifdef FIXED_POINT
+   /*epi3.r = -16384;*/ /* Unused */
+   epi3.i = -28378;
+#else
+   epi3 = st->twiddles[fstride*m];
+#endif
+   for (i=0;i<N;i++)
+   {
+      Fout = Fout_beg + i*mm;
+      tw1=tw2=st->twiddles;
+      /* For non-custom modes, m is guaranteed to be a multiple of 4. */
+      k=m;
+      do {
+
+         C_MUL(scratch[1],Fout[m] , *tw1);
+         C_MUL(scratch[2],Fout[m2] , *tw2);
+
+         C_ADD(scratch[3],scratch[1],scratch[2]);
+         C_SUB(scratch[0],scratch[1],scratch[2]);
+         tw1 += fstride;
+         tw2 += fstride*2;
+
+         Fout[m].r = SUB32_ovflw(Fout->r, HALF_OF(scratch[3].r));
+         Fout[m].i = SUB32_ovflw(Fout->i, HALF_OF(scratch[3].i));
+
+         C_MULBYSCALAR( scratch[0] , epi3.i );
+
+         C_ADDTO(*Fout,scratch[3]);
+
+         Fout[m2].r = ADD32_ovflw(Fout[m].r, scratch[0].i);
+         Fout[m2].i = SUB32_ovflw(Fout[m].i, scratch[0].r);
+
+         Fout[m].r = SUB32_ovflw(Fout[m].r, scratch[0].i);
+         Fout[m].i = ADD32_ovflw(Fout[m].i, scratch[0].r);
+
+         ++Fout;
+      } while(--k);
+   }
+}
+
+
+#ifndef OVERRIDE_kf_bfly5
+static void kf_bfly5(
+                     kiss_fft_cpx * Fout,
+                     const size_t fstride,
+                     const kiss_fft_state *st,
+                     int m,
+                     int N,
+                     int mm
+                    )
+{
+   kiss_fft_cpx *Fout0,*Fout1,*Fout2,*Fout3,*Fout4;
+   int i, u;
+   kiss_fft_cpx scratch[13];
+   const kiss_twiddle_cpx *tw;
+   kiss_twiddle_cpx ya,yb;
+   kiss_fft_cpx * Fout_beg = Fout;
+
+#ifdef FIXED_POINT
+   ya.r = 10126;
+   ya.i = -31164;
+   yb.r = -26510;
+   yb.i = -19261;
+#else
+   ya = st->twiddles[fstride*m];
+   yb = st->twiddles[fstride*2*m];
+#endif
+   tw=st->twiddles;
+
+   for (i=0;i<N;i++)
+   {
+      Fout = Fout_beg + i*mm;
+      Fout0=Fout;
+      Fout1=Fout0+m;
+      Fout2=Fout0+2*m;
+      Fout3=Fout0+3*m;
+      Fout4=Fout0+4*m;
+
+      /* For non-custom modes, m is guaranteed to be a multiple of 4. */
+      for ( u=0; u<m; ++u ) {
+         scratch[0] = *Fout0;
+
+         C_MUL(scratch[1] ,*Fout1, tw[u*fstride]);
+         C_MUL(scratch[2] ,*Fout2, tw[2*u*fstride]);
+         C_MUL(scratch[3] ,*Fout3, tw[3*u*fstride]);
+         C_MUL(scratch[4] ,*Fout4, tw[4*u*fstride]);
+
+         C_ADD( scratch[7],scratch[1],scratch[4]);
+         C_SUB( scratch[10],scratch[1],scratch[4]);
+         C_ADD( scratch[8],scratch[2],scratch[3]);
+         C_SUB( scratch[9],scratch[2],scratch[3]);
+
+         Fout0->r = ADD32_ovflw(Fout0->r, ADD32_ovflw(scratch[7].r, scratch[8].r));
+         Fout0->i = ADD32_ovflw(Fout0->i, ADD32_ovflw(scratch[7].i, scratch[8].i));
+
+         scratch[5].r = ADD32_ovflw(scratch[0].r, ADD32_ovflw(S_MUL(scratch[7].r,ya.r), S_MUL(scratch[8].r,yb.r)));
+         scratch[5].i = ADD32_ovflw(scratch[0].i, ADD32_ovflw(S_MUL(scratch[7].i,ya.r), S_MUL(scratch[8].i,yb.r)));
+
+         scratch[6].r =  ADD32_ovflw(S_MUL(scratch[10].i,ya.i), S_MUL(scratch[9].i,yb.i));
+         scratch[6].i = NEG32_ovflw(ADD32_ovflw(S_MUL(scratch[10].r,ya.i), S_MUL(scratch[9].r,yb.i)));
+
+         C_SUB(*Fout1,scratch[5],scratch[6]);
+         C_ADD(*Fout4,scratch[5],scratch[6]);
+
+         scratch[11].r = ADD32_ovflw(scratch[0].r, ADD32_ovflw(S_MUL(scratch[7].r,yb.r), S_MUL(scratch[8].r,ya.r)));
+         scratch[11].i = ADD32_ovflw(scratch[0].i, ADD32_ovflw(S_MUL(scratch[7].i,yb.r), S_MUL(scratch[8].i,ya.r)));
+         scratch[12].r = SUB32_ovflw(S_MUL(scratch[9].i,ya.i), S_MUL(scratch[10].i,yb.i));
+         scratch[12].i = SUB32_ovflw(S_MUL(scratch[10].r,yb.i), S_MUL(scratch[9].r,ya.i));
+
+         C_ADD(*Fout2,scratch[11],scratch[12]);
+         C_SUB(*Fout3,scratch[11],scratch[12]);
+
+         ++Fout0;++Fout1;++Fout2;++Fout3;++Fout4;
+      }
+   }
+}
+#endif /* OVERRIDE_kf_bfly5 */
+
+
+#endif
+
+
+#ifdef CUSTOM_MODES
+
+static
+void compute_bitrev_table(
+         int Fout,
+         opus_int32 *f,
+         const size_t fstride,
+         int in_stride,
+         opus_int16 * factors,
+         const kiss_fft_state *st
+            )
+{
+   const int p=*factors++; /* the radix  */
+   const int m=*factors++; /* stage's fft length/p */
+
+    /*printf ("fft %d %d %d %d %d %d\n", p*m, m, p, s2, fstride*in_stride, N);*/
+   if (m==1)
+   {
+      int j;
+      for (j=0;j<p;j++)
+      {
+         *f = Fout+j;
+         f += fstride*in_stride;
+      }
+   } else {
+      int j;
+      for (j=0;j<p;j++)
+      {
+         compute_bitrev_table( Fout , f, fstride*p, in_stride, factors,st);
+         f += fstride*in_stride;
+         Fout += m;
+      }
+   }
+}
+
+/*  facbuf is populated by p1,m1,p2,m2, ...
+    where
+    p[i] * m[i] = m[i-1]
+    m0 = n                  */
+static
+int kf_factor(int n,opus_int16 * facbuf)
+{
+    int p=4;
+    int i;
+    int stages=0;
+    int nbak = n;
+
+    /*factor out powers of 4, powers of 2, then any remaining primes */
+    do {
+        while (n % p) {
+            switch (p) {
+                case 4: p = 2; break;
+                case 2: p = 3; break;
+                default: p += 2; break;
+            }
+            if (p>32000 || (opus_int32)p*(opus_int32)p > n)
+                p = n;          /* no more factors, skip to end */
+        }
+        n /= p;
+#ifdef RADIX_TWO_ONLY
+        if (p!=2 && p != 4)
+#else
+        if (p>5)
+#endif
+        {
+           return 0;
+        }
+        facbuf[2*stages] = p;
+        if (p==2 && stages > 1)
+        {
+           facbuf[2*stages] = 4;
+           facbuf[2] = 2;
+        }
+        stages++;
+    } while (n > 1);
+    n = nbak;
+    /* Reverse the order to get the radix 4 at the end, so we can use the
+       fast degenerate case. It turns out that reversing the order also
+       improves the noise behaviour. */
+    for (i=0;i<stages/2;i++)
+    {
+       int tmp;
+       tmp = facbuf[2*i];
+       facbuf[2*i] = facbuf[2*(stages-i-1)];
+       facbuf[2*(stages-i-1)] = tmp;
+    }
+    for (i=0;i<stages;i++)
+    {
+        n /= facbuf[2*i];
+        facbuf[2*i+1] = n;
+    }
+    return 1;
+}
+
+static void compute_twiddles(kiss_twiddle_cpx *twiddles, int nfft)
+{
+   int i;
+#ifdef FIXED_POINT
+   for (i=0;i<nfft;++i) {
+      opus_val32 phase = -i;
+      kf_cexp2(twiddles+i, DIV32(SHL32(phase,17),nfft));
+   }
+#else
+   for (i=0;i<nfft;++i) {
+      const double pi=3.14159265358979323846264338327;
+      double phase = ( -2*pi /nfft ) * i;
+      kf_cexp(twiddles+i, phase );
+   }
+#endif
+}
+
+int rnn_fft_alloc_arch_c(kiss_fft_state *st) {
+   (void)st;
+   return 0;
+}
+
+/*
+ *
+ * Allocates all necessary storage space for the fft and ifft.
+ * The return value is a contiguous block of memory.  As such,
+ * It can be freed with free().
+ * */
+kiss_fft_state *rnn_fft_alloc_twiddles(int nfft,void * mem,size_t * lenmem,
+                                        const kiss_fft_state *base, int arch)
+{
+    kiss_fft_state *st=NULL;
+    size_t memneeded = sizeof(struct kiss_fft_state); /* twiddle factors*/
+
+    if ( lenmem==NULL ) {
+        st = ( kiss_fft_state*)KISS_FFT_MALLOC( memneeded );
+    }else{
+        if (mem != NULL && *lenmem >= memneeded)
+            st = (kiss_fft_state*)mem;
+        *lenmem = memneeded;
+    }
+    if (st) {
+        opus_int32 *bitrev;
+        kiss_twiddle_cpx *twiddles;
+
+        st->nfft=nfft;
+#ifdef FIXED_POINT
+        st->scale_shift = celt_ilog2(st->nfft);
+        if (st->nfft == 1<<st->scale_shift)
+           st->scale = Q15ONE;
+        else
+           st->scale = (1073741824+st->nfft/2)/st->nfft>>(15-st->scale_shift);
+#else
+        st->scale = 1.f/nfft;
+#endif
+        if (base != NULL)
+        {
+           st->twiddles = base->twiddles;
+           st->shift = 0;
+           while (st->shift < 32 && nfft<<st->shift != base->nfft)
+              st->shift++;
+           if (st->shift>=32)
+              goto fail;
+        } else {
+           st->twiddles = twiddles = (kiss_twiddle_cpx*)KISS_FFT_MALLOC(sizeof(kiss_twiddle_cpx)*nfft);
+           compute_twiddles(twiddles, nfft);
+           st->shift = -1;
+        }
+        if (!kf_factor(nfft,st->factors))
+        {
+           goto fail;
+        }
+
+        /* bitrev */
+        st->bitrev = bitrev = (opus_int32*)KISS_FFT_MALLOC(sizeof(opus_int32)*nfft);
+        if (st->bitrev==NULL)
+            goto fail;
+        compute_bitrev_table(0, bitrev, 1,1, st->factors,st);
+
+        /* Initialize architecture specific fft parameters */
+        if (rnn_fft_alloc_arch(st, arch))
+            goto fail;
+    }
+    return st;
+fail:
+    rnn_fft_free(st, arch);
+    return NULL;
+}
+
+kiss_fft_state *rnn_fft_alloc(int nfft,void * mem,size_t * lenmem, int arch)
+{
+   return rnn_fft_alloc_twiddles(nfft, mem, lenmem, NULL, arch);
+}
+
+void rnn_fft_free_arch_c(kiss_fft_state *st) {
+   (void)st;
+}
+
+void rnn_fft_free(const kiss_fft_state *cfg, int arch)
+{
+   if (cfg)
+   {
+      rnn_fft_free_arch((kiss_fft_state *)cfg, arch);
+      opus_free((opus_int32*)cfg->bitrev);
+      if (cfg->shift < 0)
+         opus_free((kiss_twiddle_cpx*)cfg->twiddles);
+      opus_free((kiss_fft_state*)cfg);
+   }
+}
+
+#endif /* CUSTOM_MODES */
+
+void rnn_fft_impl(const kiss_fft_state *st,kiss_fft_cpx *fout)
+{
+    int m2, m;
+    int p;
+    int L;
+    int fstride[MAXFACTORS];
+    int i;
+    int shift;
+
+    /* st->shift can be -1 */
+    shift = st->shift>0 ? st->shift : 0;
+
+    fstride[0] = 1;
+    L=0;
+    do {
+       p = st->factors[2*L];
+       m = st->factors[2*L+1];
+       fstride[L+1] = fstride[L]*p;
+       L++;
+    } while(m!=1);
+    m = st->factors[2*L-1];
+    for (i=L-1;i>=0;i--)
+    {
+       if (i!=0)
+          m2 = st->factors[2*i-1];
+       else
+          m2 = 1;
+       switch (st->factors[2*i])
+       {
+       case 2:
+          kf_bfly2(fout, m, fstride[i]);
+          break;
+       case 4:
+          kf_bfly4(fout,fstride[i]<<shift,st,m, fstride[i], m2);
+          break;
+ #ifndef RADIX_TWO_ONLY
+       case 3:
+          kf_bfly3(fout,fstride[i]<<shift,st,m, fstride[i], m2);
+          break;
+       case 5:
+          kf_bfly5(fout,fstride[i]<<shift,st,m, fstride[i], m2);
+          break;
+ #endif
+       }
+       m = m2;
+    }
+}
+
+void rnn_fft_c(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fout)
+{
+   int i;
+   opus_val16 scale;
+#ifdef FIXED_POINT
+   /* Allows us to scale with MULT16_32_Q16(), which is faster than
+      MULT16_32_Q15() on ARM. */
+   int scale_shift = st->scale_shift-1;
+#endif
+   scale = st->scale;
+
+   celt_assert2 (fin != fout, "In-place FFT not supported");
+   /* Bit-reverse the input */
+   for (i=0;i<st->nfft;i++)
+   {
+      kiss_fft_cpx x = fin[i];
+      fout[st->bitrev[i]].r = SHR32(MULT16_32_Q16(scale, x.r), scale_shift);
+      fout[st->bitrev[i]].i = SHR32(MULT16_32_Q16(scale, x.i), scale_shift);
+   }
+   rnn_fft_impl(st, fout);
+}
+
+
+void rnn_ifft_c(const kiss_fft_state *st,const kiss_fft_cpx *fin,kiss_fft_cpx *fout)
+{
+   int i;
+   celt_assert2 (fin != fout, "In-place FFT not supported");
+   /* Bit-reverse the input */
+   for (i=0;i<st->nfft;i++)
+      fout[st->bitrev[i]] = fin[i];
+   for (i=0;i<st->nfft;i++)
+      fout[i].i = -fout[i].i;
+   rnn_fft_impl(st, fout);
+   for (i=0;i<st->nfft;i++)
+      fout[i].i = -fout[i].i;
+}

src/modules/ZoomIt/ZoomIt/rnnoise/kiss_fft.h

@@ -0,0 +1,203 @@
+/*Copyright (c) 2003-2004, Mark Borgerding
+  Lots of modifications by Jean-Marc Valin
+  Copyright (c) 2005-2007, Xiph.Org Foundation
+  Copyright (c) 2008,      Xiph.Org Foundation, CSIRO
+
+  All rights reserved.
+
+  Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+       this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+  POSSIBILITY OF SUCH DAMAGE.*/
+
+#ifndef KISS_FFT_H
+#define KISS_FFT_H
+
+#include <stdlib.h>
+#include <math.h>
+#include "arch.h"
+
+#include <stdlib.h>
+#define opus_alloc(x) malloc(x)
+#define opus_free(x) free(x)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef USE_SIMD
+# include <xmmintrin.h>
+# define kiss_fft_scalar __m128
+#define KISS_FFT_MALLOC(nbytes) memalign(16,nbytes)
+#else
+#define KISS_FFT_MALLOC opus_alloc
+#endif
+
+#ifdef FIXED_POINT
+#include "arch.h"
+
+#  define kiss_fft_scalar opus_int32
+#  define kiss_twiddle_scalar opus_int16
+
+
+#else
+# ifndef kiss_fft_scalar
+/*  default is float */
+#   define kiss_fft_scalar float
+#   define kiss_twiddle_scalar float
+#   define KF_SUFFIX _celt_single
+# endif
+#endif
+
+typedef struct {
+    kiss_fft_scalar r;
+    kiss_fft_scalar i;
+}kiss_fft_cpx;
+
+typedef struct {
+   kiss_twiddle_scalar r;
+   kiss_twiddle_scalar i;
+}kiss_twiddle_cpx;
+
+#define MAXFACTORS 8
+/* e.g. an fft of length 128 has 4 factors
+ as far as kissfft is concerned
+ 4*4*4*2
+ */
+
+typedef struct arch_fft_state{
+   int is_supported;
+   void *priv;
+} arch_fft_state;
+
+typedef struct kiss_fft_state{
+    int nfft;
+    opus_val16 scale;
+#ifdef FIXED_POINT
+    int scale_shift;
+#endif
+    int shift;
+    opus_int16 factors[2*MAXFACTORS];
+    const opus_int32 *bitrev;
+    const kiss_twiddle_cpx *twiddles;
+    arch_fft_state *arch_fft;
+} kiss_fft_state;
+
+#if defined(HAVE_ARM_NE10)
+#include "arm/fft_arm.h"
+#endif
+
+/*typedef struct kiss_fft_state* kiss_fft_cfg;*/
+
+/**
+ *  opus_fft_alloc
+ *
+ *  Initialize a FFT (or IFFT) algorithm's cfg/state buffer.
+ *
+ *  typical usage:      kiss_fft_cfg mycfg=opus_fft_alloc(1024,0,NULL,NULL);
+ *
+ *  The return value from fft_alloc is a cfg buffer used internally
+ *  by the fft routine or NULL.
+ *
+ *  If lenmem is NULL, then opus_fft_alloc will allocate a cfg buffer using malloc.
+ *  The returned value should be free()d when done to avoid memory leaks.
+ *
+ *  The state can be placed in a user supplied buffer 'mem':
+ *  If lenmem is not NULL and mem is not NULL and *lenmem is large enough,
+ *      then the function places the cfg in mem and the size used in *lenmem
+ *      and returns mem.
+ *
+ *  If lenmem is not NULL and ( mem is NULL or *lenmem is not large enough),
+ *      then the function returns NULL and places the minimum cfg
+ *      buffer size in *lenmem.
+ * */
+
+kiss_fft_state *rnn_fft_alloc_twiddles(int nfft,void * mem,size_t * lenmem, const kiss_fft_state *base, int arch);
+
+kiss_fft_state *rnn_fft_alloc(int nfft,void * mem,size_t * lenmem, int arch);
+
+/**
+ * opus_fft(cfg,in_out_buf)
+ *
+ * Perform an FFT on a complex input buffer.
+ * for a forward FFT,
+ * fin should be  f[0] , f[1] , ... ,f[nfft-1]
+ * fout will be   F[0] , F[1] , ... ,F[nfft-1]
+ * Note that each element is complex and can be accessed like
+    f[k].r and f[k].i
+ * */
+void rnn_fft_c(const kiss_fft_state *cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout);
+void rnn_ifft_c(const kiss_fft_state *cfg,const kiss_fft_cpx *fin,kiss_fft_cpx *fout);
+
+void rnn_fft_impl(const kiss_fft_state *st,kiss_fft_cpx *fout);
+void rnn_ifft_impl(const kiss_fft_state *st,kiss_fft_cpx *fout);
+
+void rnn_fft_free(const kiss_fft_state *cfg, int arch);
+
+
+void rnn_fft_free_arch_c(kiss_fft_state *st);
+int rnn_fft_alloc_arch_c(kiss_fft_state *st);
+
+#if !defined(OVERRIDE_OPUS_FFT)
+/* Is run-time CPU detection enabled on this platform? */
+#if defined(OPUS_HAVE_RTCD) && (defined(HAVE_ARM_NE10))
+
+extern int (*const OPUS_FFT_ALLOC_ARCH_IMPL[OPUS_ARCHMASK+1])(
+ kiss_fft_state *st);
+
+#define opus_fft_alloc_arch(_st, arch) \
+         ((*OPUS_FFT_ALLOC_ARCH_IMPL[(arch)&OPUS_ARCHMASK])(_st))
+
+extern void (*const OPUS_FFT_FREE_ARCH_IMPL[OPUS_ARCHMASK+1])(
+ kiss_fft_state *st);
+#define opus_fft_free_arch(_st, arch) \
+         ((*OPUS_FFT_FREE_ARCH_IMPL[(arch)&OPUS_ARCHMASK])(_st))
+
+extern void (*const OPUS_FFT[OPUS_ARCHMASK+1])(const kiss_fft_state *cfg,
+ const kiss_fft_cpx *fin, kiss_fft_cpx *fout);
+#define opus_fft(_cfg, _fin, _fout, arch) \
+   ((*OPUS_FFT[(arch)&OPUS_ARCHMASK])(_cfg, _fin, _fout))
+
+extern void (*const OPUS_IFFT[OPUS_ARCHMASK+1])(const kiss_fft_state *cfg,
+ const kiss_fft_cpx *fin, kiss_fft_cpx *fout);
+#define opus_ifft(_cfg, _fin, _fout, arch) \
+   ((*OPUS_IFFT[(arch)&OPUS_ARCHMASK])(_cfg, _fin, _fout))
+
+#else /* else for if defined(OPUS_HAVE_RTCD) && (defined(HAVE_ARM_NE10)) */
+
+#define rnn_fft_alloc_arch(_st, arch) \
+         ((void)(arch), rnn_fft_alloc_arch_c(_st))
+
+#define rnn_fft_free_arch(_st, arch) \
+         ((void)(arch), rnn_fft_free_arch_c(_st))
+
+#define rnn_fft(_cfg, _fin, _fout, arch) \
+         ((void)(arch), rnn_fft_c(_cfg, _fin, _fout))
+
+#define rnn_ifft(_cfg, _fin, _fout, arch) \
+         ((void)(arch), rnn_ifft_c(_cfg, _fin, _fout))
+
+#endif /* end if defined(OPUS_HAVE_RTCD) && (defined(HAVE_ARM_NE10)) */
+#endif /* end if !defined(OVERRIDE_OPUS_FFT) */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/nnet.c

@@ -0,0 +1,123 @@
+/* Copyright (c) 2018 Mozilla
+                 2008-2011 Octasic Inc.
+                 2012-2017 Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <math.h>
+#include "opus_types.h"
+#include "arch.h"
+#include "nnet.h"
+#include "common.h"
+#include "vec.h"
+
+#ifdef ENABLE_OSCE
+#include "osce.h"
+#endif
+
+#ifdef NO_OPTIMIZATIONS
+#if defined(_MSC_VER)
+#pragma message ("Compiling without any vectorization. This code will be very slow")
+#else
+#warning Compiling without any vectorization. This code will be very slow
+#endif
+#endif
+
+
+#define SOFTMAX_HACK
+
+
+void compute_generic_dense(const LinearLayer *layer, float *output, const float *input, int activation, int arch)
+{
+   compute_linear(layer, output, input, arch);
+   compute_activation(output, output, layer->nb_outputs, activation, arch);
+}
+
+#define MAX_RNN_NEURONS_ALL 1024
+
+void compute_generic_gru(const LinearLayer *input_weights, const LinearLayer *recurrent_weights, float *state, const float *in, int arch)
+{
+  int i;
+  int N;
+  float zrh[3*MAX_RNN_NEURONS_ALL];
+  float recur[3*MAX_RNN_NEURONS_ALL];
+  float *z;
+  float *r;
+  float *h;
+  celt_assert(3*recurrent_weights->nb_inputs == recurrent_weights->nb_outputs);
+  celt_assert(input_weights->nb_outputs == recurrent_weights->nb_outputs);
+  N = recurrent_weights->nb_inputs;
+  z = zrh;
+  r = &zrh[N];
+  h = &zrh[2*N];
+  celt_assert(recurrent_weights->nb_outputs <= 3*MAX_RNN_NEURONS_ALL);
+  celt_assert(in != state);
+  compute_linear(input_weights, zrh, in, arch);
+  compute_linear(recurrent_weights, recur, state, arch);
+  for (i=0;i<2*N;i++)
+     zrh[i] += recur[i];
+  compute_activation(zrh, zrh, 2*N, ACTIVATION_SIGMOID, arch);
+  for (i=0;i<N;i++)
+     h[i] += recur[2*N+i]*r[i];
+  compute_activation(h, h, N, ACTIVATION_TANH, arch);
+  for (i=0;i<N;i++)
+     h[i] = z[i]*state[i] + (1-z[i])*h[i];
+  for (i=0;i<N;i++)
+     state[i] = h[i];
+}
+
+void compute_glu(const LinearLayer *layer, float *output, const float *input, int arch)
+{
+   int i;
+   float act2[MAX_INPUTS];
+   celt_assert(layer->nb_inputs == layer->nb_outputs);
+   compute_linear(layer, act2, input, arch);
+   compute_activation(act2, act2, layer->nb_outputs, ACTIVATION_SIGMOID, arch);
+   if (input == output) {
+     /* Give a vectorization hint to the compiler for the in-place case. */
+     for (i=0;i<layer->nb_outputs;i++) output[i] = output[i]*act2[i];
+   } else {
+     for (i=0;i<layer->nb_outputs;i++) output[i] = input[i]*act2[i];
+   }
+}
+
+#define MAX_CONV_INPUTS_ALL 1024
+
+void compute_generic_conv1d(const LinearLayer *layer, float *output, float *mem, const float *input, int input_size, int activation, int arch)
+{
+   float tmp[MAX_CONV_INPUTS_ALL];
+   celt_assert(input != output);
+   celt_assert(layer->nb_inputs <= MAX_CONV_INPUTS_ALL);
+   if (layer->nb_inputs!=input_size) RNN_COPY(tmp, mem, layer->nb_inputs-input_size);
+   RNN_COPY(&tmp[layer->nb_inputs-input_size], input, input_size);
+   compute_linear(layer, output, tmp, arch);
+   compute_activation(output, output, layer->nb_outputs, activation, arch);
+   if (layer->nb_inputs!=input_size) RNN_COPY(mem, &tmp[input_size], layer->nb_inputs-input_size);
+}

src/modules/ZoomIt/ZoomIt/rnnoise/nnet.h

@@ -0,0 +1,169 @@
+/* Copyright (c) 2018 Mozilla
+   Copyright (c) 2017 Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef NNET_H_
+#define NNET_H_
+
+#include <stddef.h>
+#include "opus_types.h"
+
+#define ACTIVATION_LINEAR  0
+#define ACTIVATION_SIGMOID 1
+#define ACTIVATION_TANH    2
+#define ACTIVATION_RELU    3
+#define ACTIVATION_SOFTMAX 4
+#define ACTIVATION_SWISH   5
+
+#define WEIGHT_BLOB_VERSION 0
+#define WEIGHT_BLOCK_SIZE 64
+typedef struct {
+  const char *name;
+  int type;
+  int size;
+  const void *data;
+} WeightArray;
+
+#define WEIGHT_TYPE_float 0
+#define WEIGHT_TYPE_int 1
+#define WEIGHT_TYPE_qweight 2
+#define WEIGHT_TYPE_int8 3
+
+typedef struct {
+  char head[4];
+  int version;
+  int type;
+  int size;
+  int block_size;
+  char name[44];
+} WeightHead;
+
+/* Generic sparse affine transformation. */
+typedef struct {
+  const float *bias;
+  const float *subias;
+  const opus_int8 *weights;
+  const float *float_weights;
+  const int *weights_idx;
+  const float *diag;
+  const float *scale;
+  int nb_inputs;
+  int nb_outputs;
+} LinearLayer;
+
+/* Generic sparse affine transformation. */
+typedef struct {
+  const float *bias;
+  const float *float_weights;
+  int in_channels;
+  int out_channels;
+  int ktime;
+  int kheight;
+} Conv2dLayer;
+
+
+/* Changes some symbol names to add the rnn_ prefix so we don't get conflicts with Opus. */
+#define linear_init rnn_linear_init
+#define conv2d_init rnn_conv2d_init
+#define compute_generic_dense rnn_compute_generic_dense
+#define compute_generic_gru rnn_compute_generic_gru
+#define compute_generic_conv1d rnn_compute_generic_conv1d
+#define compute_glu rnn_compute_glu
+
+#define parse_weights rnn_parse_weights
+
+#define compute_linear_c rnn_compute_linear_c
+#define compute_activation_c rnn_compute_activation_c
+#define compute_conv2d_c rnn_compute_conv2d_c
+#define compute_linear_sse4_1 rnn_compute_linear_sse4_1
+#define compute_activation_sse4_1 rnn_compute_activation_sse4_1
+#define compute_conv2d_sse4_1 rnn_compute_conv2d_sse4_1
+#define compute_linear_avx2 rnn_compute_linear_avx2
+#define compute_activation_avx2 rnn_compute_activation_avx2
+#define compute_conv2d_avx2 rnn_compute_conv2d_avx2
+
+
+void compute_generic_dense(const LinearLayer *layer, float *output, const float *input, int activation, int arch);
+void compute_generic_gru(const LinearLayer *input_weights, const LinearLayer *recurrent_weights, float *state, const float *in, int arch);
+void compute_generic_conv1d(const LinearLayer *layer, float *output, float *mem, const float *input, int input_size, int activation, int arch);
+void compute_glu(const LinearLayer *layer, float *output, const float *input, int arch);
+
+
+int parse_weights(WeightArray **list, const void *data, int len);
+
+
+
+int linear_init(LinearLayer *layer, const WeightArray *arrays,
+  const char *bias,
+  const char *subias,
+  const char *weights,
+  const char *float_weights,
+  const char *weights_idx,
+  const char *diag,
+  const char *scale,
+  int nb_inputs,
+  int nb_outputs);
+
+int conv2d_init(Conv2dLayer *layer, const WeightArray *arrays,
+  const char *bias,
+  const char *float_weights,
+  int in_channels,
+  int out_channels,
+  int ktime,
+  int kheight);
+
+
+void compute_linear_c(const LinearLayer *linear, float *out, const float *in);
+void compute_activation_c(float *output, const float *input, int N, int activation);
+void compute_conv2d_c(const Conv2dLayer *conv, float *out, float *mem, const float *in, int height, int hstride, int activation);
+
+#ifdef RNN_ENABLE_X86_RTCD
+#include "x86/dnn_x86.h"
+#endif
+
+#ifndef OVERRIDE_COMPUTE_LINEAR
+#define compute_linear(linear, out, in, arch) ((void)(arch),compute_linear_c(linear, out, in))
+#endif
+
+#ifndef OVERRIDE_COMPUTE_ACTIVATION
+#define compute_activation(output, input, N, activation, arch) ((void)(arch),compute_activation_c(output, input, N, activation))
+#endif
+
+#ifndef OVERRIDE_COMPUTE_CONV2D
+#define compute_conv2d(conv, out, mem, in, height, hstride, activation, arch) ((void)(arch),compute_conv2d_c(conv, out, mem, in, height, hstride, activation))
+#endif
+
+#if defined(__x86_64__) && !defined(RNN_ENABLE_X86_RTCD) && !defined(__AVX2__)
+#if defined(_MSC_VER)
+#pragma message ("Only SSE and SSE2 are available. On newer machines, enable SSSE3/AVX/AVX2 to get better performance")
+#else
+#warning "Only SSE and SSE2 are available. On newer machines, enable SSSE3/AVX/AVX2 using -march= to get better performance"
+#endif
+#endif
+
+
+
+#endif /* NNET_H_ */

src/modules/ZoomIt/ZoomIt/rnnoise/nnet_arch.h

@@ -0,0 +1,257 @@
+/* Copyright (c) 2018-2019 Mozilla
+                 2023 Amazon */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef NNET_ARCH_H
+#define NNET_ARCH_H
+
+#include "nnet.h"
+#include "arch.h"
+#include "common.h"
+#include "vec.h"
+
+#define CAT_SUFFIX2(a,b) a ## b
+#define CAT_SUFFIX(a,b) CAT_SUFFIX2(a, b)
+
+#define RTCD_SUF(name) CAT_SUFFIX(name, RTCD_ARCH)
+
+# if !defined(OPUS_GNUC_PREREQ)
+#  if defined(__GNUC__)&&defined(__GNUC_MINOR__)
+#   define OPUS_GNUC_PREREQ(_maj,_min) \
+ ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
+#  else
+#   define OPUS_GNUC_PREREQ(_maj,_min) 0
+#  endif
+# endif
+
+
+/* Force vectorization on for DNN code because some of the loops rely on
+   compiler vectorization rather than explicitly using intrinsics. */
+#if OPUS_GNUC_PREREQ(5,1)
+#define GCC_POP_OPTIONS
+#pragma GCC push_options
+#pragma GCC optimize("tree-vectorize")
+#endif
+
+
+#define MAX_ACTIVATIONS (4096)
+
+static OPUS_INLINE void vec_swish(float *y, const float *x, int N)
+{
+   int i;
+   float tmp[MAX_ACTIVATIONS];
+   celt_assert(N <= MAX_ACTIVATIONS);
+   vec_sigmoid(tmp, x, N);
+   for (i=0;i<N;i++)
+      y[i] = x[i]*tmp[i];
+}
+
+static OPUS_INLINE float relu(float x)
+{
+   return x < 0 ? 0 : x;
+}
+
+/*#define HIGH_ACCURACY */
+
+void RTCD_SUF(compute_activation_)(float *output, const float *input, int N, int activation)
+{
+   int i;
+   if (activation == ACTIVATION_SIGMOID) {
+#ifdef HIGH_ACCURACY
+      for (int n=0; n<N; n++)
+      {
+         output[n] = 1.f  / (1 + exp(-input[n]));
+      }
+#else
+      vec_sigmoid(output, input, N);
+#endif
+   } else if (activation == ACTIVATION_TANH) {
+#ifdef HIGH_ACCURACY
+      for (int n=0; n<N; n++)
+      {
+         output[n] = tanh(input[n]);
+      }
+#else
+      vec_tanh(output, input, N);
+#endif
+   } else if (activation == ACTIVATION_SWISH) {
+      vec_swish(output, input, N);
+   } else if (activation == ACTIVATION_RELU) {
+      for (i=0;i<N;i++)
+         output[i] = relu(input[i]);
+   } else if (activation == ACTIVATION_SOFTMAX) {
+#ifdef SOFTMAX_HACK
+      RNN_COPY(output, input, N);
+      /*for (i=0;i<N;i++)
+         output[i] = input[i];*/
+#else
+      float sum = 0;
+      softmax(output, input, N);
+      for (i=0;i<N;i++) {
+         sum += output[i];
+      }
+      sum = 1.f/(sum+1e-30);
+      for (i=0;i<N;i++)
+         output[i] = sum*output[i];
+#endif
+   } else {
+      celt_assert(activation == ACTIVATION_LINEAR);
+      if (input != output) {
+         for (i=0;i<N;i++)
+            output[i] = input[i];
+      }
+   }
+}
+
+
+void RTCD_SUF(compute_linear_) (const LinearLayer *linear, float *out, const float *in)
+{
+   int i, M, N;
+   const float *bias;
+   celt_assert(in != out);
+   bias = linear->bias;
+   M = linear->nb_inputs;
+   N = linear->nb_outputs;
+   if (linear->float_weights != NULL) {
+     if (linear->weights_idx != NULL) sparse_sgemv8x4(out, linear->float_weights, linear->weights_idx, N, in);
+     else sgemv(out, linear->float_weights, N, M, N, in);
+   } else if (linear->weights != NULL) {
+     if (linear->weights_idx != NULL) sparse_cgemv8x4(out, linear->weights, linear->weights_idx, linear->scale, N, M, in);
+     else cgemv8x4(out, linear->weights, linear->scale, N, M, in);
+     /* Only use SU biases on for integer matrices on SU archs. */
+#ifdef USE_SU_BIAS
+     bias = linear->subias;
+#endif
+   }
+   else RNN_CLEAR(out, N);
+   if (bias != NULL) {
+      for (i=0;i<N;i++) out[i] += bias[i];
+   }
+   if (linear->diag) {
+      /* Diag is only used for GRU recurrent weights. */
+      celt_assert(3*M == N);
+      for (i=0;i<M;i++) {
+         out[i] += linear->diag[i]*in[i];
+         out[i+M] += linear->diag[i+M]*in[i];
+         out[i+2*M] += linear->diag[i+2*M]*in[i];
+      }
+   }
+}
+
+/* Computes non-padded convolution for input [ ksize1 x in_channels x (len2+ksize2) ],
+   kernel [ out_channels x in_channels x ksize1 x ksize2 ],
+   storing the output as [ out_channels x len2 ].
+   We assume that the output dimension along the ksize1 axis is 1,
+   i.e. processing one frame at a time. */
+static void conv2d_float(float *out, const float *weights, int in_channels, int out_channels, int ktime, int kheight, const float *in, int height, int hstride)
+{
+   int i;
+   int in_stride;
+   in_stride = height+kheight-1;
+   for (i=0;i<out_channels;i++) {
+      int m;
+      RNN_CLEAR(&out[i*hstride], height);
+      for (m=0;m<in_channels;m++) {
+         int t;
+         for (t=0;t<ktime;t++) {
+            int h;
+            for (h=0;h<kheight;h++) {
+               int j;
+               for (j=0;j<height;j++) {
+                  out[i*hstride + j] += weights[i*in_channels*ktime*kheight + m*ktime*kheight + t*kheight + h] *
+                                     in[t*in_channels*in_stride + m*in_stride + j + h];
+               }
+            }
+         }
+      }
+   }
+}
+
+/* There's no intrinsics in this function (or the one above) because the gcc (and hopefully other compiler) auto-vectorizer is smart enough to
+   produce the right code by itself based on the compile flags. */
+static void conv2d_3x3_float(float *out, const float *weights, int in_channels, int out_channels, const float *in, int height, int hstride)
+{
+   int i;
+   int in_stride;
+   int kheight, ktime;
+   kheight = ktime = 3;
+   in_stride = height+kheight-1;
+   for (i=0;i<out_channels;i++) {
+      int m;
+      RNN_CLEAR(&out[i*hstride], height);
+      for (m=0;m<in_channels;m++) {
+         int j;
+         for (j=0;j<height;j++) {
+            /* Unrolled version of previous function -- compiler will figure out the indexing simplifications. */
+            out[i*hstride + j] += weights[i*in_channels*ktime*kheight + m*ktime*kheight + 0*kheight + 0]*in[0*in_channels*in_stride + m*in_stride + j + 0]
+                                + weights[i*in_channels*ktime*kheight + m*ktime*kheight + 0*kheight + 1]*in[0*in_channels*in_stride + m*in_stride + j + 1]
+                                + weights[i*in_channels*ktime*kheight + m*ktime*kheight + 0*kheight + 2]*in[0*in_channels*in_stride + m*in_stride + j + 2]
+                                + weights[i*in_channels*ktime*kheight + m*ktime*kheight + 1*kheight + 0]*in[1*in_channels*in_stride + m*in_stride + j + 0]
+                                + weights[i*in_channels*ktime*kheight + m*ktime*kheight + 1*kheight + 1]*in[1*in_channels*in_stride + m*in_stride + j + 1]
+                                + weights[i*in_channels*ktime*kheight + m*ktime*kheight + 1*kheight + 2]*in[1*in_channels*in_stride + m*in_stride + j + 2]
+                                + weights[i*in_channels*ktime*kheight + m*ktime*kheight + 2*kheight + 0]*in[2*in_channels*in_stride + m*in_stride + j + 0]
+                                + weights[i*in_channels*ktime*kheight + m*ktime*kheight + 2*kheight + 1]*in[2*in_channels*in_stride + m*in_stride + j + 1]
+                                + weights[i*in_channels*ktime*kheight + m*ktime*kheight + 2*kheight + 2]*in[2*in_channels*in_stride + m*in_stride + j + 2];
+               }
+      }
+   }
+}
+
+#define MAX_CONV2D_INPUTS 8192
+
+void RTCD_SUF(compute_conv2d_)(const Conv2dLayer *conv, float *out, float *mem, const float *in, int height, int hstride, int activation)
+{
+   int i;
+   const float *bias;
+   float in_buf[MAX_CONV2D_INPUTS];
+   int time_stride;
+   celt_assert(in != out);
+   time_stride = conv->in_channels*(height+conv->kheight-1);
+   celt_assert(conv->ktime*time_stride <= MAX_CONV2D_INPUTS);
+   RNN_COPY(in_buf, mem, (conv->ktime-1)*time_stride);
+   RNN_COPY(&in_buf[(conv->ktime-1)*time_stride], in, time_stride);
+   RNN_COPY(mem, &in_buf[time_stride], (conv->ktime-1)*time_stride);
+   bias = conv->bias;
+   if (conv->kheight == 3 && conv->ktime == 3)
+     conv2d_3x3_float(out, conv->float_weights, conv->in_channels, conv->out_channels, in_buf, height, hstride);
+   else
+     conv2d_float(out, conv->float_weights, conv->in_channels, conv->out_channels, conv->ktime, conv->kheight, in_buf, height, hstride);
+   if (bias != NULL) {
+     for (i=0;i<conv->out_channels;i++) {
+       int j;
+       for (j=0;j<height;j++) out[i*hstride+j] += bias[i];
+     }
+   }
+   for (i=0;i<conv->out_channels;i++) {
+     RTCD_SUF(compute_activation_)(&out[i*hstride], &out[i*hstride], height, activation);
+   }
+}
+
+#ifdef GCC_POP_OPTIONS
+#pragma GCC pop_options
+#endif
+
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/nnet_default.c

@@ -0,0 +1,35 @@
+/* Copyright (c) 2018-2019 Mozilla
+                 2023 Amazon */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+
+#define RTCD_ARCH c
+
+#include "nnet_arch.h"

src/modules/ZoomIt/ZoomIt/rnnoise/opus_types.h

@@ -0,0 +1,159 @@
+/* (C) COPYRIGHT 1994-2002 Xiph.Org Foundation */
+/* Modified by Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+/* opus_types.h based on ogg_types.h from libogg */
+
+/**
+   @file opus_types.h
+   @brief Opus reference implementation types
+*/
+#ifndef OPUS_TYPES_H
+#define OPUS_TYPES_H
+
+/* Use the real stdint.h if it's there (taken from Paul Hsieh's pstdint.h) */
+#if (defined(__STDC__) && __STDC__ && defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || (defined(__GNUC__) && (defined(_STDINT_H) || defined(_STDINT_H_)) || defined (HAVE_STDINT_H))
+#include <stdint.h>
+
+   typedef int16_t opus_int16;
+   typedef uint16_t opus_uint16;
+   typedef int32_t opus_int32;
+   typedef uint32_t opus_uint32;
+#elif defined(_WIN32)
+
+#  if defined(__CYGWIN__)
+#    include <_G_config.h>
+     typedef _G_int32_t opus_int32;
+     typedef _G_uint32_t opus_uint32;
+     typedef _G_int16 opus_int16;
+     typedef _G_uint16 opus_uint16;
+#  elif defined(__MINGW32__)
+     typedef short opus_int16;
+     typedef unsigned short opus_uint16;
+     typedef int opus_int32;
+     typedef unsigned int opus_uint32;
+#  elif defined(__MWERKS__)
+     typedef int opus_int32;
+     typedef unsigned int opus_uint32;
+     typedef short opus_int16;
+     typedef unsigned short opus_uint16;
+#  else
+     /* MSVC/Borland */
+     typedef __int32 opus_int32;
+     typedef unsigned __int32 opus_uint32;
+     typedef __int16 opus_int16;
+     typedef unsigned __int16 opus_uint16;
+#  endif
+
+#elif defined(__MACOS__)
+
+#  include <sys/types.h>
+   typedef SInt16 opus_int16;
+   typedef UInt16 opus_uint16;
+   typedef SInt32 opus_int32;
+   typedef UInt32 opus_uint32;
+
+#elif (defined(__APPLE__) && defined(__MACH__)) /* MacOS X Framework build */
+
+#  include <sys/types.h>
+   typedef int16_t opus_int16;
+   typedef u_int16_t opus_uint16;
+   typedef int32_t opus_int32;
+   typedef u_int32_t opus_uint32;
+
+#elif defined(__BEOS__)
+
+   /* Be */
+#  include <inttypes.h>
+   typedef int16 opus_int16;
+   typedef u_int16 opus_uint16;
+   typedef int32_t opus_int32;
+   typedef u_int32_t opus_uint32;
+
+#elif defined (__EMX__)
+
+   /* OS/2 GCC */
+   typedef short opus_int16;
+   typedef unsigned short opus_uint16;
+   typedef int opus_int32;
+   typedef unsigned int opus_uint32;
+
+#elif defined (DJGPP)
+
+   /* DJGPP */
+   typedef short opus_int16;
+   typedef unsigned short opus_uint16;
+   typedef int opus_int32;
+   typedef unsigned int opus_uint32;
+
+#elif defined(R5900)
+
+   /* PS2 EE */
+   typedef int opus_int32;
+   typedef unsigned opus_uint32;
+   typedef short opus_int16;
+   typedef unsigned short opus_uint16;
+
+#elif defined(__SYMBIAN32__)
+
+   /* Symbian GCC */
+   typedef signed short opus_int16;
+   typedef unsigned short opus_uint16;
+   typedef signed int opus_int32;
+   typedef unsigned int opus_uint32;
+
+#elif defined(CONFIG_TI_C54X) || defined (CONFIG_TI_C55X)
+
+   typedef short opus_int16;
+   typedef unsigned short opus_uint16;
+   typedef long opus_int32;
+   typedef unsigned long opus_uint32;
+
+#elif defined(CONFIG_TI_C6X)
+
+   typedef short opus_int16;
+   typedef unsigned short opus_uint16;
+   typedef int opus_int32;
+   typedef unsigned int opus_uint32;
+
+#else
+
+   /* Give up, take a reasonable guess */
+   typedef short opus_int16;
+   typedef unsigned short opus_uint16;
+   typedef int opus_int32;
+   typedef unsigned int opus_uint32;
+
+#endif
+
+#define opus_int         int                     /* used for counters etc; at least 16 bits */
+#define opus_int64       long long
+#define opus_int8        signed char
+
+#define opus_uint        unsigned int            /* used for counters etc; at least 16 bits */
+#define opus_uint64      unsigned long long
+#define opus_uint8       unsigned char
+
+#endif  /* OPUS_TYPES_H */

src/modules/ZoomIt/ZoomIt/rnnoise/parse_lpcnet_weights.c

@@ -0,0 +1,237 @@
+/* Copyright (c) 2023 Amazon */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string.h>
+#include <stdlib.h>
+#include "nnet.h"
+
+#define SPARSE_BLOCK_SIZE 32
+
+static int parse_record(const void **data, int *len, WeightArray *array) {
+  WeightHead *h = (WeightHead *)*data;
+  if (*len < WEIGHT_BLOCK_SIZE) return -1;
+  if (h->block_size < h->size) return -1;
+  if (h->block_size > *len-WEIGHT_BLOCK_SIZE) return -1;
+  if (h->name[sizeof(h->name)-1] != 0) return -1;
+  if (h->size < 0) return -1;
+  array->name = h->name;
+  array->type = h->type;
+  array->size = h->size;
+  array->data = (void*)((unsigned char*)(*data)+WEIGHT_BLOCK_SIZE);
+
+  *data = (void*)((unsigned char*)*data + h->block_size+WEIGHT_BLOCK_SIZE);
+  *len -= h->block_size+WEIGHT_BLOCK_SIZE;
+  return array->size;
+}
+
+int parse_weights(WeightArray **list, const void *data, int len)
+{
+  int nb_arrays=0;
+  int capacity=20;
+  *list = calloc(capacity*sizeof(WeightArray), 1);
+  while (len > 0) {
+    int ret;
+    WeightArray array = {NULL, 0, 0, 0};
+    ret = parse_record(&data, &len, &array);
+    if (ret > 0) {
+      if (nb_arrays+1 >= capacity) {
+        /* Make sure there's room for the ending NULL element too. */
+        capacity = capacity*3/2;
+        *list = realloc(*list, capacity*sizeof(WeightArray));
+      }
+      (*list)[nb_arrays++] = array;
+    } else {
+      free(*list);
+      *list = NULL;
+      return -1;
+    }
+  }
+  (*list)[nb_arrays].name=NULL;
+  return nb_arrays;
+}
+
+static const void *find_array_entry(const WeightArray *arrays, const char *name) {
+  while (arrays->name && strcmp(arrays->name, name) != 0) arrays++;
+  return arrays;
+}
+
+static const void *find_array_check(const WeightArray *arrays, const char *name, int size) {
+  const WeightArray *a = find_array_entry(arrays, name);
+  if (a->name && a->size == size) return a->data;
+  else return NULL;
+}
+
+static const void *opt_array_check(const WeightArray *arrays, const char *name, int size, int *error) {
+  const WeightArray *a = find_array_entry(arrays, name);
+  *error = (a->name != NULL && a->size != size);
+  if (a->name && a->size == size) return a->data;
+  else return NULL;
+}
+
+static const void *find_idx_check(const WeightArray *arrays, const char *name, int nb_in, int nb_out, int *total_blocks) {
+  int remain;
+  const int *idx;
+  const WeightArray *a = find_array_entry(arrays, name);
+  *total_blocks = 0;
+  if (a == NULL) return NULL;
+  idx = a->data;
+  remain = a->size/sizeof(int);
+  while (remain > 0) {
+    int nb_blocks;
+    int i;
+    nb_blocks = *idx++;
+    if (remain < nb_blocks+1) return NULL;
+    for (i=0;i<nb_blocks;i++) {
+      int pos = *idx++;
+      if (pos+3 >= nb_in || (pos&0x3)) return NULL;
+    }
+    nb_out -= 8;
+    remain -= nb_blocks+1;
+    *total_blocks += nb_blocks;
+  }
+  if (nb_out != 0) return NULL;
+  return a->data;
+}
+
+int linear_init(LinearLayer *layer, const WeightArray *arrays,
+  const char *bias,
+  const char *subias,
+  const char *weights,
+  const char *float_weights,
+  const char *weights_idx,
+  const char *diag,
+  const char *scale,
+  int nb_inputs,
+  int nb_outputs)
+{
+  int err;
+  layer->bias = NULL;
+  layer->subias = NULL;
+  layer->weights = NULL;
+  layer->float_weights = NULL;
+  layer->weights_idx = NULL;
+  layer->diag = NULL;
+  layer->scale = NULL;
+  if (bias != NULL) {
+    if ((layer->bias = find_array_check(arrays, bias, nb_outputs*sizeof(layer->bias[0]))) == NULL) return 1;
+  }
+  if (subias != NULL) {
+    if ((layer->subias = find_array_check(arrays, subias, nb_outputs*sizeof(layer->subias[0]))) == NULL) return 1;
+  }
+  if (weights_idx != NULL) {
+    int total_blocks;
+    if ((layer->weights_idx = find_idx_check(arrays, weights_idx, nb_inputs, nb_outputs, &total_blocks)) == NULL) return 1;
+    if (weights != NULL) {
+      if ((layer->weights = find_array_check(arrays, weights, SPARSE_BLOCK_SIZE*total_blocks*sizeof(layer->weights[0]))) == NULL) return 1;
+    }
+    if (float_weights != NULL) {
+      layer->float_weights = opt_array_check(arrays, float_weights, SPARSE_BLOCK_SIZE*total_blocks*sizeof(layer->float_weights[0]), &err);
+      if (err) return 1;
+    }
+  } else {
+    if (weights != NULL) {
+      if ((layer->weights = find_array_check(arrays, weights, nb_inputs*nb_outputs*sizeof(layer->weights[0]))) == NULL) return 1;
+    }
+    if (float_weights != NULL) {
+      layer->float_weights = opt_array_check(arrays, float_weights, nb_inputs*nb_outputs*sizeof(layer->float_weights[0]), &err);
+      if (err) return 1;
+    }
+  }
+  if (diag != NULL) {
+    if ((layer->diag = find_array_check(arrays, diag, nb_outputs*sizeof(layer->diag[0]))) == NULL) return 1;
+  }
+  if (weights != NULL) {
+    if ((layer->scale = find_array_check(arrays, scale, nb_outputs*sizeof(layer->scale[0]))) == NULL) return 1;
+  }
+  layer->nb_inputs = nb_inputs;
+  layer->nb_outputs = nb_outputs;
+  return 0;
+}
+
+int conv2d_init(Conv2dLayer *layer, const WeightArray *arrays,
+  const char *bias,
+  const char *float_weights,
+  int in_channels,
+  int out_channels,
+  int ktime,
+  int kheight)
+{
+  int err;
+  layer->bias = NULL;
+  layer->float_weights = NULL;
+  if (bias != NULL) {
+    if ((layer->bias = find_array_check(arrays, bias, out_channels*sizeof(layer->bias[0]))) == NULL) return 1;
+  }
+  if (float_weights != NULL) {
+    layer->float_weights = opt_array_check(arrays, float_weights, in_channels*out_channels*ktime*kheight*sizeof(layer->float_weights[0]), &err);
+    if (err) return 1;
+  }
+  layer->in_channels = in_channels;
+  layer->out_channels = out_channels;
+  layer->ktime = ktime;
+  layer->kheight = kheight;
+  return 0;
+}
+
+
+
+#if 0
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <sys/stat.h>
+#include <stdio.h>
+
+int main()
+{
+  int fd;
+  void *data;
+  int len;
+  int nb_arrays;
+  int i;
+  WeightArray *list;
+  struct stat st;
+  const char *filename = "weights_blob.bin";
+  stat(filename, &st);
+  len = st.st_size;
+  fd = open(filename, O_RDONLY);
+  data = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0);
+  printf("size is %d\n", len);
+  nb_arrays = parse_weights(&list, data, len);
+  for (i=0;i<nb_arrays;i++) {
+    printf("found %s: size %d\n", list[i].name, list[i].size);
+  }
+  printf("%p\n", list[i].name);
+  free(list);
+  munmap(data, len);
+  close(fd);
+  return 0;
+}
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/pitch.c

@@ -0,0 +1,528 @@
+/* Copyright (c) 2007-2008 CSIRO
+   Copyright (c) 2007-2009 Xiph.Org Foundation
+   Written by Jean-Marc Valin */
+/**
+   @file pitch.c
+   @brief Pitch analysis
+ */
+
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "pitch.h"
+#include "common.h"
+#include "denoise.h"
+#include "celt_lpc.h"
+#include "math.h"
+
+static void find_best_pitch(opus_val32 *xcorr, opus_val16 *y, int len,
+                            int max_pitch, int *best_pitch
+#ifdef FIXED_POINT
+                            , int yshift, opus_val32 maxcorr
+#endif
+                            )
+{
+   int i, j;
+   opus_val32 Syy=1;
+   opus_val16 best_num[2];
+   opus_val32 best_den[2];
+#ifdef FIXED_POINT
+   int xshift;
+
+   xshift = celt_ilog2(maxcorr)-14;
+#endif
+
+   best_num[0] = -1;
+   best_num[1] = -1;
+   best_den[0] = 0;
+   best_den[1] = 0;
+   best_pitch[0] = 0;
+   best_pitch[1] = 1;
+   for (j=0;j<len;j++)
+      Syy = ADD32(Syy, SHR32(MULT16_16(y[j],y[j]), yshift));
+   for (i=0;i<max_pitch;i++)
+   {
+      if (xcorr[i]>0)
+      {
+         opus_val16 num;
+         opus_val32 xcorr16;
+         xcorr16 = EXTRACT16(VSHR32(xcorr[i], xshift));
+#ifndef FIXED_POINT
+         /* Considering the range of xcorr16, this should avoid both underflows
+            and overflows (inf) when squaring xcorr16 */
+         xcorr16 *= 1e-12f;
+#endif
+         num = MULT16_16_Q15(xcorr16,xcorr16);
+         if (MULT16_32_Q15(num,best_den[1]) > MULT16_32_Q15(best_num[1],Syy))
+         {
+            if (MULT16_32_Q15(num,best_den[0]) > MULT16_32_Q15(best_num[0],Syy))
+            {
+               best_num[1] = best_num[0];
+               best_den[1] = best_den[0];
+               best_pitch[1] = best_pitch[0];
+               best_num[0] = num;
+               best_den[0] = Syy;
+               best_pitch[0] = i;
+            } else {
+               best_num[1] = num;
+               best_den[1] = Syy;
+               best_pitch[1] = i;
+            }
+         }
+      }
+      Syy += SHR32(MULT16_16(y[i+len],y[i+len]),yshift) - SHR32(MULT16_16(y[i],y[i]),yshift);
+      Syy = MAX32(1, Syy);
+   }
+}
+
+static void celt_fir5(const opus_val16 *x,
+         const opus_val16 *num,
+         opus_val16 *y,
+         int N,
+         opus_val16 *mem)
+{
+   int i;
+   opus_val16 num0, num1, num2, num3, num4;
+   opus_val32 mem0, mem1, mem2, mem3, mem4;
+   num0=num[0];
+   num1=num[1];
+   num2=num[2];
+   num3=num[3];
+   num4=num[4];
+   mem0=mem[0];
+   mem1=mem[1];
+   mem2=mem[2];
+   mem3=mem[3];
+   mem4=mem[4];
+   for (i=0;i<N;i++)
+   {
+      opus_val32 sum = SHL32(EXTEND32(x[i]), SIG_SHIFT);
+      sum = MAC16_16(sum,num0,mem0);
+      sum = MAC16_16(sum,num1,mem1);
+      sum = MAC16_16(sum,num2,mem2);
+      sum = MAC16_16(sum,num3,mem3);
+      sum = MAC16_16(sum,num4,mem4);
+      mem4 = mem3;
+      mem3 = mem2;
+      mem2 = mem1;
+      mem1 = mem0;
+      mem0 = x[i];
+      y[i] = ROUND16(sum, SIG_SHIFT);
+   }
+   mem[0]=mem0;
+   mem[1]=mem1;
+   mem[2]=mem2;
+   mem[3]=mem3;
+   mem[4]=mem4;
+}
+
+
+void rnn_pitch_downsample(celt_sig *x[], opus_val16 *x_lp,
+      int len, int C)
+{
+   int i;
+   opus_val32 ac[5];
+   opus_val16 tmp=Q15ONE;
+   opus_val16 lpc[4], mem[5]={0,0,0,0,0};
+   opus_val16 lpc2[5];
+   opus_val16 c1 = QCONST16(.8f,15);
+#ifdef FIXED_POINT
+   int shift;
+   opus_val32 maxabs = celt_maxabs32(x[0], len);
+   if (C==2)
+   {
+      opus_val32 maxabs_1 = celt_maxabs32(x[1], len);
+      maxabs = MAX32(maxabs, maxabs_1);
+   }
+   if (maxabs<1)
+      maxabs=1;
+   shift = celt_ilog2(maxabs)-10;
+   if (shift<0)
+      shift=0;
+   if (C==2)
+      shift++;
+#endif
+   for (i=1;i<len>>1;i++)
+      x_lp[i] = SHR32(HALF32(HALF32(x[0][(2*i-1)]+x[0][(2*i+1)])+x[0][2*i]), shift);
+   x_lp[0] = SHR32(HALF32(HALF32(x[0][1])+x[0][0]), shift);
+   if (C==2)
+   {
+      for (i=1;i<len>>1;i++)
+         x_lp[i] += SHR32(HALF32(HALF32(x[1][(2*i-1)]+x[1][(2*i+1)])+x[1][2*i]), shift);
+      x_lp[0] += SHR32(HALF32(HALF32(x[1][1])+x[1][0]), shift);
+   }
+
+   rnn_autocorr(x_lp, ac, NULL, 0,
+                  4, len>>1);
+
+   /* Noise floor -40 dB */
+#ifdef FIXED_POINT
+   ac[0] += SHR32(ac[0],13);
+#else
+   ac[0] *= 1.0001f;
+#endif
+   /* Lag windowing */
+   for (i=1;i<=4;i++)
+   {
+      /*ac[i] *= exp(-.5*(2*M_PI*.002*i)*(2*M_PI*.002*i));*/
+#ifdef FIXED_POINT
+      ac[i] -= MULT16_32_Q15(2*i*i, ac[i]);
+#else
+      ac[i] -= ac[i]*(.008f*i)*(.008f*i);
+#endif
+   }
+
+   rnn_lpc(lpc, ac, 4);
+   for (i=0;i<4;i++)
+   {
+      tmp = MULT16_16_Q15(QCONST16(.9f,15), tmp);
+      lpc[i] = MULT16_16_Q15(lpc[i], tmp);
+   }
+   /* Add a zero */
+   lpc2[0] = lpc[0] + QCONST16(.8f,SIG_SHIFT);
+   lpc2[1] = lpc[1] + MULT16_16_Q15(c1,lpc[0]);
+   lpc2[2] = lpc[2] + MULT16_16_Q15(c1,lpc[1]);
+   lpc2[3] = lpc[3] + MULT16_16_Q15(c1,lpc[2]);
+   lpc2[4] = MULT16_16_Q15(c1,lpc[3]);
+   celt_fir5(x_lp, lpc2, x_lp, len>>1, mem);
+}
+
+void rnn_pitch_xcorr(const opus_val16 *_x, const opus_val16 *_y,
+      opus_val32 *xcorr, int len, int max_pitch)
+{
+
+#if 0 /* This is a simple version of the pitch correlation that should work
+         well on DSPs like Blackfin and TI C5x/C6x */
+   int i, j;
+#ifdef FIXED_POINT
+   opus_val32 maxcorr=1;
+#endif
+   for (i=0;i<max_pitch;i++)
+   {
+      opus_val32 sum = 0;
+      for (j=0;j<len;j++)
+         sum = MAC16_16(sum, _x[j], _y[i+j]);
+      xcorr[i] = sum;
+#ifdef FIXED_POINT
+      maxcorr = MAX32(maxcorr, sum);
+#endif
+   }
+#ifdef FIXED_POINT
+   return maxcorr;
+#endif
+
+#else /* Unrolled version of the pitch correlation -- runs faster on x86 and ARM */
+   int i;
+   /*The EDSP version requires that max_pitch is at least 1, and that _x is
+      32-bit aligned.
+     Since it's hard to put asserts in assembly, put them here.*/
+#ifdef FIXED_POINT
+   opus_val32 maxcorr=1;
+#endif
+   celt_assert(max_pitch>0);
+   celt_assert((((unsigned char *)_x-(unsigned char *)NULL)&3)==0);
+   for (i=0;i<max_pitch-3;i+=4)
+   {
+      opus_val32 sum[4]={0,0,0,0};
+      xcorr_kernel(_x, _y+i, sum, len);
+      xcorr[i]=sum[0];
+      xcorr[i+1]=sum[1];
+      xcorr[i+2]=sum[2];
+      xcorr[i+3]=sum[3];
+#ifdef FIXED_POINT
+      sum[0] = MAX32(sum[0], sum[1]);
+      sum[2] = MAX32(sum[2], sum[3]);
+      sum[0] = MAX32(sum[0], sum[2]);
+      maxcorr = MAX32(maxcorr, sum[0]);
+#endif
+   }
+   /* In case max_pitch isn't a multiple of 4, do non-unrolled version. */
+   for (;i<max_pitch;i++)
+   {
+      opus_val32 sum;
+      sum = celt_inner_prod(_x, _y+i, len);
+      xcorr[i] = sum;
+#ifdef FIXED_POINT
+      maxcorr = MAX32(maxcorr, sum);
+#endif
+   }
+#ifdef FIXED_POINT
+   return maxcorr;
+#endif
+#endif
+}
+
+void rnn_pitch_search(const opus_val16 *x_lp, opus_val16 *y,
+                  int len, int max_pitch, int *pitch)
+{
+   int i, j;
+   int lag;
+   int best_pitch[2]={0,0};
+#ifdef FIXED_POINT
+   opus_val32 maxcorr;
+   opus_val32 xmax, ymax;
+   int shift=0;
+#endif
+   int offset;
+   opus_val16 x_lp4[PITCH_FRAME_SIZE>>2];
+   opus_val16 y_lp4[(PITCH_FRAME_SIZE+PITCH_MAX_PERIOD)>>2];
+   opus_val32 xcorr[PITCH_MAX_PERIOD>>1];
+
+   celt_assert(len <= PITCH_FRAME_SIZE);
+   celt_assert(max_pitch <= PITCH_MAX_PERIOD);
+   celt_assert(len>0);
+   celt_assert(max_pitch>0);
+   lag = len+max_pitch;
+
+
+   /* Downsample by 2 again */
+   for (j=0;j<len>>2;j++)
+      x_lp4[j] = x_lp[2*j];
+   for (j=0;j<lag>>2;j++)
+      y_lp4[j] = y[2*j];
+
+#ifdef FIXED_POINT
+   xmax = celt_maxabs16(x_lp4, len>>2);
+   ymax = celt_maxabs16(y_lp4, lag>>2);
+   shift = celt_ilog2(MAX32(1, MAX32(xmax, ymax)))-11;
+   if (shift>0)
+   {
+      for (j=0;j<len>>2;j++)
+         x_lp4[j] = SHR16(x_lp4[j], shift);
+      for (j=0;j<lag>>2;j++)
+         y_lp4[j] = SHR16(y_lp4[j], shift);
+      /* Use double the shift for a MAC */
+      shift *= 2;
+   } else {
+      shift = 0;
+   }
+#endif
+
+   /* Coarse search with 4x decimation */
+
+#ifdef FIXED_POINT
+   maxcorr =
+#endif
+   rnn_pitch_xcorr(x_lp4, y_lp4, xcorr, len>>2, max_pitch>>2);
+
+   find_best_pitch(xcorr, y_lp4, len>>2, max_pitch>>2, best_pitch
+#ifdef FIXED_POINT
+                   , 0, maxcorr
+#endif
+                   );
+
+   /* Finer search with 2x decimation */
+#ifdef FIXED_POINT
+   maxcorr=1;
+#endif
+   for (i=0;i<max_pitch>>1;i++)
+   {
+      opus_val32 sum;
+      xcorr[i] = 0;
+      if (abs(i-2*best_pitch[0])>2 && abs(i-2*best_pitch[1])>2)
+         continue;
+#ifdef FIXED_POINT
+      sum = 0;
+      for (j=0;j<len>>1;j++)
+         sum += SHR32(MULT16_16(x_lp[j],y[i+j]), shift);
+#else
+      sum = celt_inner_prod(x_lp, y+i, len>>1);
+#endif
+      xcorr[i] = MAX32(-1, sum);
+#ifdef FIXED_POINT
+      maxcorr = MAX32(maxcorr, sum);
+#endif
+   }
+   find_best_pitch(xcorr, y, len>>1, max_pitch>>1, best_pitch
+#ifdef FIXED_POINT
+                   , shift+1, maxcorr
+#endif
+                   );
+
+   /* Refine by pseudo-interpolation */
+   if (best_pitch[0]>0 && best_pitch[0]<(max_pitch>>1)-1)
+   {
+      opus_val32 a, b, c;
+      a = xcorr[best_pitch[0]-1];
+      b = xcorr[best_pitch[0]];
+      c = xcorr[best_pitch[0]+1];
+      if ((c-a) > MULT16_32_Q15(QCONST16(.7f,15),b-a))
+         offset = 1;
+      else if ((a-c) > MULT16_32_Q15(QCONST16(.7f,15),b-c))
+         offset = -1;
+      else
+         offset = 0;
+   } else {
+      offset = 0;
+   }
+   *pitch = 2*best_pitch[0]-offset;
+}
+
+#ifdef FIXED_POINT
+static opus_val16 compute_pitch_gain(opus_val32 xy, opus_val32 xx, opus_val32 yy)
+{
+   opus_val32 x2y2;
+   int sx, sy, shift;
+   opus_val32 g;
+   opus_val16 den;
+   if (xy == 0 || xx == 0 || yy == 0)
+      return 0;
+   sx = celt_ilog2(xx)-14;
+   sy = celt_ilog2(yy)-14;
+   shift = sx + sy;
+   x2y2 = SHR32(MULT16_16(VSHR32(xx, sx), VSHR32(yy, sy)), 14);
+   if (shift & 1) {
+      if (x2y2 < 32768)
+      {
+         x2y2 <<= 1;
+         shift--;
+      } else {
+         x2y2 >>= 1;
+         shift++;
+      }
+   }
+   den = celt_rsqrt_norm(x2y2);
+   g = MULT16_32_Q15(den, xy);
+   g = VSHR32(g, (shift>>1)-1);
+   return EXTRACT16(MIN32(g, Q15ONE));
+}
+#else
+static opus_val16 compute_pitch_gain(opus_val32 xy, opus_val32 xx, opus_val32 yy)
+{
+   return xy/sqrt(1+xx*yy);
+}
+#endif
+
+static const int second_check[16] = {0, 0, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 5, 2, 3, 2};
+opus_val16 rnn_remove_doubling(opus_val16 *x, int maxperiod, int minperiod,
+      int N, int *T0_, int prev_period, opus_val16 prev_gain)
+{
+   int k, i, T, T0;
+   opus_val16 g, g0;
+   opus_val16 pg;
+   opus_val32 xy,xx,yy,xy2;
+   opus_val32 xcorr[3];
+   opus_val32 best_xy, best_yy;
+   int offset;
+   int minperiod0;
+   opus_val32 yy_lookup[PITCH_MAX_PERIOD+1];
+   
+   celt_assert(maxperiod <= PITCH_MAX_PERIOD);
+
+   minperiod0 = minperiod;
+   maxperiod /= 2;
+   minperiod /= 2;
+   *T0_ /= 2;
+   prev_period /= 2;
+   N /= 2;
+   x += maxperiod;
+   if (*T0_>=maxperiod)
+      *T0_=maxperiod-1;
+
+   T = T0 = *T0_;
+   dual_inner_prod(x, x, x-T0, N, &xx, &xy);
+   yy_lookup[0] = xx;
+   yy=xx;
+   for (i=1;i<=maxperiod;i++)
+   {
+      yy = yy+MULT16_16(x[-i],x[-i])-MULT16_16(x[N-i],x[N-i]);
+      yy_lookup[i] = MAX32(0, yy);
+   }
+   yy = yy_lookup[T0];
+   best_xy = xy;
+   best_yy = yy;
+   g = g0 = compute_pitch_gain(xy, xx, yy);
+   /* Look for any pitch at T/k */
+   for (k=2;k<=15;k++)
+   {
+      int T1, T1b;
+      opus_val16 g1;
+      opus_val16 cont=0;
+      opus_val16 thresh;
+      T1 = (2*T0+k)/(2*k);
+      if (T1 < minperiod)
+         break;
+      /* Look for another strong correlation at T1b */
+      if (k==2)
+      {
+         if (T1+T0>maxperiod)
+            T1b = T0;
+         else
+            T1b = T0+T1;
+      } else
+      {
+         T1b = (2*second_check[k]*T0+k)/(2*k);
+      }
+      dual_inner_prod(x, &x[-T1], &x[-T1b], N, &xy, &xy2);
+      xy = HALF32(xy + xy2);
+      yy = HALF32(yy_lookup[T1] + yy_lookup[T1b]);
+      g1 = compute_pitch_gain(xy, xx, yy);
+      if (abs(T1-prev_period)<=1)
+         cont = prev_gain;
+      else if (abs(T1-prev_period)<=2 && 5*k*k < T0)
+         cont = HALF16(prev_gain);
+      else
+         cont = 0;
+      thresh = MAX16(QCONST16(.3f,15), MULT16_16_Q15(QCONST16(.7f,15),g0)-cont);
+      /* Bias against very high pitch (very short period) to avoid false-positives
+         due to short-term correlation */
+      if (T1<3*minperiod)
+         thresh = MAX16(QCONST16(.4f,15), MULT16_16_Q15(QCONST16(.85f,15),g0)-cont);
+      else if (T1<2*minperiod)
+         thresh = MAX16(QCONST16(.5f,15), MULT16_16_Q15(QCONST16(.9f,15),g0)-cont);
+      if (g1 > thresh)
+      {
+         best_xy = xy;
+         best_yy = yy;
+         T = T1;
+         g = g1;
+      }
+   }
+   best_xy = MAX32(0, best_xy);
+   if (best_yy <= best_xy)
+      pg = Q15ONE;
+   else
+      pg = best_xy/(best_yy+1);
+
+   for (k=0;k<3;k++)
+      xcorr[k] = celt_inner_prod(x, x-(T+k-1), N);
+   if ((xcorr[2]-xcorr[0]) > MULT16_32_Q15(QCONST16(.7f,15),xcorr[1]-xcorr[0]))
+      offset = 1;
+   else if ((xcorr[0]-xcorr[2]) > MULT16_32_Q15(QCONST16(.7f,15),xcorr[1]-xcorr[2]))
+      offset = -1;
+   else
+      offset = 0;
+   if (pg > g)
+      pg = g;
+   *T0_ = 2*T+offset;
+
+   if (*T0_<minperiod0)
+      *T0_=minperiod0;
+   return pg;
+}

src/modules/ZoomIt/ZoomIt/rnnoise/pitch.h

@@ -0,0 +1,147 @@
+/* Copyright (c) 2007-2008 CSIRO
+   Copyright (c) 2007-2009 Xiph.Org Foundation
+   Written by Jean-Marc Valin */
+/**
+   @file pitch.h
+   @brief Pitch analysis
+ */
+
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef PITCH_H
+#define PITCH_H
+
+#include "arch.h"
+
+void rnn_pitch_downsample(celt_sig *x[], opus_val16 *x_lp,
+      int len, int C);
+
+void rnn_pitch_search(const opus_val16 *x_lp, opus_val16 *y,
+                  int len, int max_pitch, int *pitch);
+
+opus_val16 rnn_remove_doubling(opus_val16 *x, int maxperiod, int minperiod,
+      int N, int *T0, int prev_period, opus_val16 prev_gain);
+
+
+/* OPT: This is the kernel you really want to optimize. It gets used a lot
+   by the prefilter and by the PLC. */
+static OPUS_INLINE void xcorr_kernel(const opus_val16 * x, const opus_val16 * y, opus_val32 sum[4], int len)
+{
+   int j;
+   opus_val16 y_0, y_1, y_2, y_3;
+   celt_assert(len>=3);
+   y_3=0; /* gcc doesn't realize that y_3 can't be used uninitialized */
+   y_0=*y++;
+   y_1=*y++;
+   y_2=*y++;
+   for (j=0;j<len-3;j+=4)
+   {
+      opus_val16 tmp;
+      tmp = *x++;
+      y_3=*y++;
+      sum[0] = MAC16_16(sum[0],tmp,y_0);
+      sum[1] = MAC16_16(sum[1],tmp,y_1);
+      sum[2] = MAC16_16(sum[2],tmp,y_2);
+      sum[3] = MAC16_16(sum[3],tmp,y_3);
+      tmp=*x++;
+      y_0=*y++;
+      sum[0] = MAC16_16(sum[0],tmp,y_1);
+      sum[1] = MAC16_16(sum[1],tmp,y_2);
+      sum[2] = MAC16_16(sum[2],tmp,y_3);
+      sum[3] = MAC16_16(sum[3],tmp,y_0);
+      tmp=*x++;
+      y_1=*y++;
+      sum[0] = MAC16_16(sum[0],tmp,y_2);
+      sum[1] = MAC16_16(sum[1],tmp,y_3);
+      sum[2] = MAC16_16(sum[2],tmp,y_0);
+      sum[3] = MAC16_16(sum[3],tmp,y_1);
+      tmp=*x++;
+      y_2=*y++;
+      sum[0] = MAC16_16(sum[0],tmp,y_3);
+      sum[1] = MAC16_16(sum[1],tmp,y_0);
+      sum[2] = MAC16_16(sum[2],tmp,y_1);
+      sum[3] = MAC16_16(sum[3],tmp,y_2);
+   }
+   if (j++<len)
+   {
+      opus_val16 tmp = *x++;
+      y_3=*y++;
+      sum[0] = MAC16_16(sum[0],tmp,y_0);
+      sum[1] = MAC16_16(sum[1],tmp,y_1);
+      sum[2] = MAC16_16(sum[2],tmp,y_2);
+      sum[3] = MAC16_16(sum[3],tmp,y_3);
+   }
+   if (j++<len)
+   {
+      opus_val16 tmp=*x++;
+      y_0=*y++;
+      sum[0] = MAC16_16(sum[0],tmp,y_1);
+      sum[1] = MAC16_16(sum[1],tmp,y_2);
+      sum[2] = MAC16_16(sum[2],tmp,y_3);
+      sum[3] = MAC16_16(sum[3],tmp,y_0);
+   }
+   if (j<len)
+   {
+      opus_val16 tmp=*x++;
+      y_1=*y++;
+      sum[0] = MAC16_16(sum[0],tmp,y_2);
+      sum[1] = MAC16_16(sum[1],tmp,y_3);
+      sum[2] = MAC16_16(sum[2],tmp,y_0);
+      sum[3] = MAC16_16(sum[3],tmp,y_1);
+   }
+}
+
+static OPUS_INLINE void dual_inner_prod(const opus_val16 *x, const opus_val16 *y01, const opus_val16 *y02,
+      int N, opus_val32 *xy1, opus_val32 *xy2)
+{
+   int i;
+   opus_val32 xy01=0;
+   opus_val32 xy02=0;
+   for (i=0;i<N;i++)
+   {
+      xy01 = MAC16_16(xy01, x[i], y01[i]);
+      xy02 = MAC16_16(xy02, x[i], y02[i]);
+   }
+   *xy1 = xy01;
+   *xy2 = xy02;
+}
+
+/*We make sure a C version is always available for cases where the overhead of
+  vectorization and passing around an arch flag aren't worth it.*/
+static OPUS_INLINE opus_val32 celt_inner_prod(const opus_val16 *x,
+      const opus_val16 *y, int N)
+{
+   int i;
+   opus_val32 xy=0;
+   for (i=0;i<N;i++)
+      xy = MAC16_16(xy, x[i], y[i]);
+   return xy;
+}
+
+void rnn_pitch_xcorr(const opus_val16 *_x, const opus_val16 *_y,
+      opus_val32 *xcorr, int len, int max_pitch);
+
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/rnn.c

@@ -0,0 +1,60 @@
+/* Copyright (c) 2008-2011 Octasic Inc.
+                 2012-2017 Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <math.h>
+#include "opus_types.h"
+#include "common.h"
+#include "arch.h"
+#include "rnn.h"
+#include "rnnoise_data.h"
+#include <stdio.h>
+
+
+#define INPUT_SIZE 42
+
+
+void compute_rnn(const RNNoise *model, RNNState *rnn, float *gains, float *vad, const float *input, int arch) {
+  float tmp[MAX_NEURONS];
+  float cat[CONV2_OUT_SIZE + GRU1_OUT_SIZE + GRU2_OUT_SIZE + GRU3_OUT_SIZE];
+  /*for (int i=0;i<INPUT_SIZE;i++) printf("%f ", input[i]);printf("\n");*/
+  compute_generic_conv1d(&model->conv1, tmp, rnn->conv1_state, input, CONV1_IN_SIZE, ACTIVATION_TANH, arch);
+  compute_generic_conv1d(&model->conv2, cat, rnn->conv2_state, tmp, CONV2_IN_SIZE, ACTIVATION_TANH, arch);
+  compute_generic_gru(&model->gru1_input, &model->gru1_recurrent, rnn->gru1_state, cat, arch);
+  compute_generic_gru(&model->gru2_input, &model->gru2_recurrent, rnn->gru2_state, rnn->gru1_state, arch);
+  compute_generic_gru(&model->gru3_input, &model->gru3_recurrent, rnn->gru3_state, rnn->gru2_state, arch);
+  RNN_COPY(&cat[CONV2_OUT_SIZE], rnn->gru1_state, GRU1_OUT_SIZE);
+  RNN_COPY(&cat[CONV2_OUT_SIZE+GRU1_OUT_SIZE], rnn->gru2_state, GRU2_OUT_SIZE);
+  RNN_COPY(&cat[CONV2_OUT_SIZE+GRU1_OUT_SIZE+GRU2_OUT_SIZE], rnn->gru3_state, GRU3_OUT_SIZE);
+  compute_generic_dense(&model->dense_out, gains, cat, ACTIVATION_SIGMOID, arch);
+  compute_generic_dense(&model->vad_dense, vad, cat, ACTIVATION_SIGMOID, arch);
+  /*for (int i=0;i<22;i++) printf("%f ", gains[i]);printf("\n");*/
+  /*printf("%f\n", *vad);*/
+}

src/modules/ZoomIt/ZoomIt/rnnoise/rnn.h

@@ -0,0 +1,49 @@
+/* Copyright (c) 2017 Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef RNN_H_
+#define RNN_H_
+
+#include "rnnoise.h"
+#include "rnnoise_data.h"
+
+#include "opus_types.h"
+
+#define WEIGHTS_SCALE (1.f/256)
+
+#define MAX_NEURONS 1024
+
+
+typedef struct {
+  float conv1_state[CONV1_STATE_SIZE];
+  float conv2_state[CONV2_STATE_SIZE];
+  float gru1_state[GRU1_STATE_SIZE];
+  float gru2_state[GRU2_STATE_SIZE];
+  float gru3_state[GRU3_STATE_SIZE];
+} RNNState;
+void compute_rnn(const RNNoise *model, RNNState *rnn, float *gains, float *vad, const float *input, int arch);
+
+#endif /* RNN_H_ */

src/modules/ZoomIt/ZoomIt/rnnoise/rnnoise.h

@@ -0,0 +1,131 @@
+/* Copyright (c) 2018 Gregor Richards
+ * Copyright (c) 2017 Mozilla */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef RNNOISE_H
+#define RNNOISE_H 1
+
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef RNNOISE_EXPORT
+# if defined(WIN32)
+#  if defined(RNNOISE_BUILD) && defined(DLL_EXPORT)
+#   define RNNOISE_EXPORT __declspec(dllexport)
+#  else
+#   define RNNOISE_EXPORT
+#  endif
+# elif defined(__GNUC__) && defined(RNNOISE_BUILD)
+#  define RNNOISE_EXPORT __attribute__ ((visibility ("default")))
+# else
+#  define RNNOISE_EXPORT
+# endif
+#endif
+
+typedef struct DenoiseState DenoiseState;
+typedef struct RNNModel RNNModel;
+
+/**
+ * Return the size of DenoiseState
+ */
+RNNOISE_EXPORT int rnnoise_get_size(void);
+
+/**
+ * Return the number of samples processed by rnnoise_process_frame at a time
+ */
+RNNOISE_EXPORT int rnnoise_get_frame_size(void);
+
+/**
+ * Initializes a pre-allocated DenoiseState
+ *
+ * If model is NULL the default model is used.
+ *
+ * See: rnnoise_create() and rnnoise_model_from_file()
+ */
+RNNOISE_EXPORT int rnnoise_init(DenoiseState *st, RNNModel *model);
+
+/**
+ * Allocate and initialize a DenoiseState
+ *
+ * If model is NULL the default model is used.
+ *
+ * The returned pointer MUST be freed with rnnoise_destroy().
+ */
+RNNOISE_EXPORT DenoiseState *rnnoise_create(RNNModel *model);
+
+/**
+ * Free a DenoiseState produced by rnnoise_create.
+ *
+ * The optional custom model must be freed by rnnoise_model_free() after.
+ */
+RNNOISE_EXPORT void rnnoise_destroy(DenoiseState *st);
+
+/**
+ * Denoise a frame of samples
+ *
+ * in and out must be at least rnnoise_get_frame_size() large.
+ */
+RNNOISE_EXPORT float rnnoise_process_frame(DenoiseState *st, float *out, const float *in);
+
+/**
+ * Load a model from a memory buffer
+ *
+ * It must be deallocated with rnnoise_model_free() and the buffer must remain
+ * valid until after the returned object is destroyed.
+ */
+RNNOISE_EXPORT RNNModel *rnnoise_model_from_buffer(const void *ptr, int len);
+
+
+/**
+ * Load a model from a file
+ *
+ * It must be deallocated with rnnoise_model_free() and the file must not be
+ * closed until the returned object is destroyed.
+ */
+RNNOISE_EXPORT RNNModel *rnnoise_model_from_file(FILE *f);
+
+/**
+ * Load a model from a file name
+ *
+ * It must be deallocated with rnnoise_model_free()
+ */
+RNNOISE_EXPORT RNNModel *rnnoise_model_from_filename(const char *filename);
+
+/**
+ * Free a custom model
+ *
+ * It must be called after all the DenoiseStates referring to it are freed.
+ */
+RNNOISE_EXPORT void rnnoise_model_free(RNNModel *model);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/rnnoise_data.h

@@ -0,0 +1,55 @@
+
+#ifndef RNNOISE_DATA_H
+#define RNNOISE_DATA_H
+
+#include "nnet.h"
+
+
+#define CONV1_OUT_SIZE 128
+
+#define CONV1_IN_SIZE 65
+
+#define CONV1_STATE_SIZE (65 * (2))
+
+#define CONV1_DELAY 1
+
+#define CONV2_OUT_SIZE 384
+
+#define CONV2_IN_SIZE 128
+
+#define CONV2_STATE_SIZE (128 * (2))
+
+#define CONV2_DELAY 1
+
+#define GRU1_OUT_SIZE 384
+
+#define GRU1_STATE_SIZE 384
+
+#define GRU2_OUT_SIZE 384
+
+#define GRU2_STATE_SIZE 384
+
+#define GRU3_OUT_SIZE 384
+
+#define GRU3_STATE_SIZE 384
+
+#define DENSE_OUT_OUT_SIZE 32
+
+#define VAD_DENSE_OUT_SIZE 1
+
+typedef struct {
+    LinearLayer conv1;
+    LinearLayer conv2;
+    LinearLayer gru1_input;
+    LinearLayer gru1_recurrent;
+    LinearLayer gru2_input;
+    LinearLayer gru2_recurrent;
+    LinearLayer gru3_input;
+    LinearLayer gru3_recurrent;
+    LinearLayer dense_out;
+    LinearLayer vad_dense;
+} RNNoise;
+
+int init_rnnoise(RNNoise *model, const WeightArray *arrays);
+
+#endif /* RNNOISE_DATA_H */

src/modules/ZoomIt/ZoomIt/rnnoise/rnnoise_tables.c

@@ -0,0 +1,874 @@
+/* The contents of this file was automatically generated by dump_rnnoise_tables.c*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "kiss_fft.h"
+
+static const arch_fft_state arch_fft = {0, NULL};
+
+static const opus_int32 fft_bitrev[960] = {
+0, 192, 384, 576, 768, 64, 256, 448, 640, 832, 128, 320, 512, 704, 896,
+16, 208, 400, 592, 784, 80, 272, 464, 656, 848, 144, 336, 528, 720, 912,
+32, 224, 416, 608, 800, 96, 288, 480, 672, 864, 160, 352, 544, 736, 928,
+48, 240, 432, 624, 816, 112, 304, 496, 688, 880, 176, 368, 560, 752, 944,
+4, 196, 388, 580, 772, 68, 260, 452, 644, 836, 132, 324, 516, 708, 900,
+20, 212, 404, 596, 788, 84, 276, 468, 660, 852, 148, 340, 532, 724, 916,
+36, 228, 420, 612, 804, 100, 292, 484, 676, 868, 164, 356, 548, 740, 932,
+52, 244, 436, 628, 820, 116, 308, 500, 692, 884, 180, 372, 564, 756, 948,
+8, 200, 392, 584, 776, 72, 264, 456, 648, 840, 136, 328, 520, 712, 904,
+24, 216, 408, 600, 792, 88, 280, 472, 664, 856, 152, 344, 536, 728, 920,
+40, 232, 424, 616, 808, 104, 296, 488, 680, 872, 168, 360, 552, 744, 936,
+56, 248, 440, 632, 824, 120, 312, 504, 696, 888, 184, 376, 568, 760, 952,
+12, 204, 396, 588, 780, 76, 268, 460, 652, 844, 140, 332, 524, 716, 908,
+28, 220, 412, 604, 796, 92, 284, 476, 668, 860, 156, 348, 540, 732, 924,
+44, 236, 428, 620, 812, 108, 300, 492, 684, 876, 172, 364, 556, 748, 940,
+60, 252, 444, 636, 828, 124, 316, 508, 700, 892, 188, 380, 572, 764, 956,
+1, 193, 385, 577, 769, 65, 257, 449, 641, 833, 129, 321, 513, 705, 897,
+17, 209, 401, 593, 785, 81, 273, 465, 657, 849, 145, 337, 529, 721, 913,
+33, 225, 417, 609, 801, 97, 289, 481, 673, 865, 161, 353, 545, 737, 929,
+49, 241, 433, 625, 817, 113, 305, 497, 689, 881, 177, 369, 561, 753, 945,
+5, 197, 389, 581, 773, 69, 261, 453, 645, 837, 133, 325, 517, 709, 901,
+21, 213, 405, 597, 789, 85, 277, 469, 661, 853, 149, 341, 533, 725, 917,
+37, 229, 421, 613, 805, 101, 293, 485, 677, 869, 165, 357, 549, 741, 933,
+53, 245, 437, 629, 821, 117, 309, 501, 693, 885, 181, 373, 565, 757, 949,
+9, 201, 393, 585, 777, 73, 265, 457, 649, 841, 137, 329, 521, 713, 905,
+25, 217, 409, 601, 793, 89, 281, 473, 665, 857, 153, 345, 537, 729, 921,
+41, 233, 425, 617, 809, 105, 297, 489, 681, 873, 169, 361, 553, 745, 937,
+57, 249, 441, 633, 825, 121, 313, 505, 697, 889, 185, 377, 569, 761, 953,
+13, 205, 397, 589, 781, 77, 269, 461, 653, 845, 141, 333, 525, 717, 909,
+29, 221, 413, 605, 797, 93, 285, 477, 669, 861, 157, 349, 541, 733, 925,
+45, 237, 429, 621, 813, 109, 301, 493, 685, 877, 173, 365, 557, 749, 941,
+61, 253, 445, 637, 829, 125, 317, 509, 701, 893, 189, 381, 573, 765, 957,
+2, 194, 386, 578, 770, 66, 258, 450, 642, 834, 130, 322, 514, 706, 898,
+18, 210, 402, 594, 786, 82, 274, 466, 658, 850, 146, 338, 530, 722, 914,
+34, 226, 418, 610, 802, 98, 290, 482, 674, 866, 162, 354, 546, 738, 930,
+50, 242, 434, 626, 818, 114, 306, 498, 690, 882, 178, 370, 562, 754, 946,
+6, 198, 390, 582, 774, 70, 262, 454, 646, 838, 134, 326, 518, 710, 902,
+22, 214, 406, 598, 790, 86, 278, 470, 662, 854, 150, 342, 534, 726, 918,
+38, 230, 422, 614, 806, 102, 294, 486, 678, 870, 166, 358, 550, 742, 934,
+54, 246, 438, 630, 822, 118, 310, 502, 694, 886, 182, 374, 566, 758, 950,
+10, 202, 394, 586, 778, 74, 266, 458, 650, 842, 138, 330, 522, 714, 906,
+26, 218, 410, 602, 794, 90, 282, 474, 666, 858, 154, 346, 538, 730, 922,
+42, 234, 426, 618, 810, 106, 298, 490, 682, 874, 170, 362, 554, 746, 938,
+58, 250, 442, 634, 826, 122, 314, 506, 698, 890, 186, 378, 570, 762, 954,
+14, 206, 398, 590, 782, 78, 270, 462, 654, 846, 142, 334, 526, 718, 910,
+30, 222, 414, 606, 798, 94, 286, 478, 670, 862, 158, 350, 542, 734, 926,
+46, 238, 430, 622, 814, 110, 302, 494, 686, 878, 174, 366, 558, 750, 942,
+62, 254, 446, 638, 830, 126, 318, 510, 702, 894, 190, 382, 574, 766, 958,
+3, 195, 387, 579, 771, 67, 259, 451, 643, 835, 131, 323, 515, 707, 899,
+19, 211, 403, 595, 787, 83, 275, 467, 659, 851, 147, 339, 531, 723, 915,
+35, 227, 419, 611, 803, 99, 291, 483, 675, 867, 163, 355, 547, 739, 931,
+51, 243, 435, 627, 819, 115, 307, 499, 691, 883, 179, 371, 563, 755, 947,
+7, 199, 391, 583, 775, 71, 263, 455, 647, 839, 135, 327, 519, 711, 903,
+23, 215, 407, 599, 791, 87, 279, 471, 663, 855, 151, 343, 535, 727, 919,
+39, 231, 423, 615, 807, 103, 295, 487, 679, 871, 167, 359, 551, 743, 935,
+55, 247, 439, 631, 823, 119, 311, 503, 695, 887, 183, 375, 567, 759, 951,
+11, 203, 395, 587, 779, 75, 267, 459, 651, 843, 139, 331, 523, 715, 907,
+27, 219, 411, 603, 795, 91, 283, 475, 667, 859, 155, 347, 539, 731, 923,
+43, 235, 427, 619, 811, 107, 299, 491, 683, 875, 171, 363, 555, 747, 939,
+59, 251, 443, 635, 827, 123, 315, 507, 699, 891, 187, 379, 571, 763, 955,
+15, 207, 399, 591, 783, 79, 271, 463, 655, 847, 143, 335, 527, 719, 911,
+31, 223, 415, 607, 799, 95, 287, 479, 671, 863, 159, 351, 543, 735, 927,
+47, 239, 431, 623, 815, 111, 303, 495, 687, 879, 175, 367, 559, 751, 943,
+63, 255, 447, 639, 831, 127, 319, 511, 703, 895, 191, 383, 575, 767, 959,
+};
+
+static const kiss_twiddle_cpx fft_twiddles[960] = {
+{1.00000000f, -0.00000000f}, {0.999978602f, -0.00654493785f},
+{0.999914348f, -0.0130895954f}, {0.999807239f, -0.0196336918f},
+{0.999657333f, -0.0261769481f}, {0.999464571f, -0.0327190831f},
+{0.999229014f, -0.0392598175f}, {0.998950660f, -0.0457988679f},
+{0.998629510f, -0.0523359552f}, {0.998265624f, -0.0588708036f},
+{0.997858942f, -0.0654031262f}, {0.997409463f, -0.0719326511f},
+{0.996917307f, -0.0784590989f}, {0.996382475f, -0.0849821791f},
+{0.995804906f, -0.0915016159f}, {0.995184720f, -0.0980171412f},
+{0.994521916f, -0.104528464f}, {0.993816435f, -0.111035310f},
+{0.993068457f, -0.117537394f}, {0.992277920f, -0.124034449f},
+{0.991444886f, -0.130526185f}, {0.990569353f, -0.137012348f},
+{0.989651382f, -0.143492624f}, {0.988691032f, -0.149966761f},
+{0.987688363f, -0.156434461f}, {0.986643314f, -0.162895471f},
+{0.985556066f, -0.169349506f}, {0.984426558f, -0.175796285f},
+{0.983254910f, -0.182235524f}, {0.982041121f, -0.188666970f},
+{0.980785251f, -0.195090324f}, {0.979487419f, -0.201505318f},
+{0.978147626f, -0.207911685f}, {0.976765871f, -0.214309156f},
+{0.975342333f, -0.220697433f}, {0.973876953f, -0.227076262f},
+{0.972369909f, -0.233445361f}, {0.970821202f, -0.239804462f},
+{0.969230890f, -0.246153295f}, {0.967599094f, -0.252491564f},
+{0.965925813f, -0.258819044f}, {0.964211166f, -0.265135437f},
+{0.962455213f, -0.271440446f}, {0.960658073f, -0.277733833f},
+{0.958819747f, -0.284015357f}, {0.956940353f, -0.290284663f},
+{0.955019951f, -0.296541572f}, {0.953058660f, -0.302785784f},
+{0.951056540f, -0.309017003f}, {0.949013650f, -0.315234989f},
+{0.946930110f, -0.321439475f}, {0.944806039f, -0.327630192f},
+{0.942641497f, -0.333806872f}, {0.940436542f, -0.339969248f},
+{0.938191354f, -0.346117049f}, {0.935905933f, -0.352250040f},
+{0.933580399f, -0.358367950f}, {0.931214929f, -0.364470512f},
+{0.928809524f, -0.370557427f}, {0.926364362f, -0.376628488f},
+{0.923879504f, -0.382683426f}, {0.921355128f, -0.388721973f},
+{0.918791234f, -0.394743860f}, {0.916187942f, -0.400748819f},
+{0.913545430f, -0.406736642f}, {0.910863817f, -0.412707031f},
+{0.908143163f, -0.418659747f}, {0.905383646f, -0.424594522f},
+{0.902585268f, -0.430511087f}, {0.899748266f, -0.436409235f},
+{0.896872759f, -0.442288697f}, {0.893958807f, -0.448149204f},
+{0.891006529f, -0.453990489f}, {0.888016105f, -0.459812373f},
+{0.884987652f, -0.465614527f}, {0.881921291f, -0.471396744f},
+{0.878817141f, -0.477158755f}, {0.875675321f, -0.482900351f},
+{0.872496009f, -0.488621235f}, {0.869279325f, -0.494321197f},
+{0.866025388f, -0.500000000f}, {0.862734377f, -0.505657375f},
+{0.859406412f, -0.511293113f}, {0.856041610f, -0.516906917f},
+{0.852640152f, -0.522498548f}, {0.849202156f, -0.528067827f},
+{0.845727801f, -0.533614516f}, {0.842217207f, -0.539138317f},
+{0.838670552f, -0.544639051f}, {0.835087955f, -0.550116420f},
+{0.831469595f, -0.555570245f}, {0.827815652f, -0.561000228f},
+{0.824126184f, -0.566406250f}, {0.820401430f, -0.571787953f},
+{0.816641569f, -0.577145219f}, {0.812846661f, -0.582477689f},
+{0.809017003f, -0.587785244f}, {0.805152655f, -0.593067646f},
+{0.801253796f, -0.598324597f}, {0.797320664f, -0.603555918f},
+{0.793353319f, -0.608761430f}, {0.789352059f, -0.613940835f},
+{0.785316944f, -0.619093955f}, {0.781248152f, -0.624220550f},
+{0.777145982f, -0.629320383f}, {0.773010433f, -0.634393275f},
+{0.768841803f, -0.639438987f}, {0.764640272f, -0.644457340f},
+{0.760405958f, -0.649448037f}, {0.756139100f, -0.654410958f},
+{0.751839817f, -0.659345806f}, {0.747508347f, -0.664252460f},
+{0.743144810f, -0.669130623f}, {0.738749504f, -0.673980117f},
+{0.734322488f, -0.678800762f}, {0.729864061f, -0.683592319f},
+{0.725374401f, -0.688354552f}, {0.720853567f, -0.693087339f},
+{0.716301918f, -0.697790444f}, {0.711719632f, -0.702463686f},
+{0.707106769f, -0.707106769f}, {0.702463686f, -0.711719632f},
+{0.697790444f, -0.716301918f}, {0.693087339f, -0.720853567f},
+{0.688354552f, -0.725374401f}, {0.683592319f, -0.729864061f},
+{0.678800762f, -0.734322488f}, {0.673980117f, -0.738749504f},
+{0.669130623f, -0.743144810f}, {0.664252460f, -0.747508347f},
+{0.659345806f, -0.751839817f}, {0.654410958f, -0.756139100f},
+{0.649448037f, -0.760405958f}, {0.644457340f, -0.764640272f},
+{0.639438987f, -0.768841803f}, {0.634393275f, -0.773010433f},
+{0.629320383f, -0.777145982f}, {0.624220550f, -0.781248152f},
+{0.619093955f, -0.785316944f}, {0.613940835f, -0.789352059f},
+{0.608761430f, -0.793353319f}, {0.603555918f, -0.797320664f},
+{0.598324597f, -0.801253796f}, {0.593067646f, -0.805152655f},
+{0.587785244f, -0.809017003f}, {0.582477689f, -0.812846661f},
+{0.577145219f, -0.816641569f}, {0.571787953f, -0.820401430f},
+{0.566406250f, -0.824126184f}, {0.561000228f, -0.827815652f},
+{0.555570245f, -0.831469595f}, {0.550116420f, -0.835087955f},
+{0.544639051f, -0.838670552f}, {0.539138317f, -0.842217207f},
+{0.533614516f, -0.845727801f}, {0.528067827f, -0.849202156f},
+{0.522498548f, -0.852640152f}, {0.516906917f, -0.856041610f},
+{0.511293113f, -0.859406412f}, {0.505657375f, -0.862734377f},
+{0.500000000f, -0.866025388f}, {0.494321197f, -0.869279325f},
+{0.488621235f, -0.872496009f}, {0.482900351f, -0.875675321f},
+{0.477158755f, -0.878817141f}, {0.471396744f, -0.881921291f},
+{0.465614527f, -0.884987652f}, {0.459812373f, -0.888016105f},
+{0.453990489f, -0.891006529f}, {0.448149204f, -0.893958807f},
+{0.442288697f, -0.896872759f}, {0.436409235f, -0.899748266f},
+{0.430511087f, -0.902585268f}, {0.424594522f, -0.905383646f},
+{0.418659747f, -0.908143163f}, {0.412707031f, -0.910863817f},
+{0.406736642f, -0.913545430f}, {0.400748819f, -0.916187942f},
+{0.394743860f, -0.918791234f}, {0.388721973f, -0.921355128f},
+{0.382683426f, -0.923879504f}, {0.376628488f, -0.926364362f},
+{0.370557427f, -0.928809524f}, {0.364470512f, -0.931214929f},
+{0.358367950f, -0.933580399f}, {0.352250040f, -0.935905933f},
+{0.346117049f, -0.938191354f}, {0.339969248f, -0.940436542f},
+{0.333806872f, -0.942641497f}, {0.327630192f, -0.944806039f},
+{0.321439475f, -0.946930110f}, {0.315234989f, -0.949013650f},
+{0.309017003f, -0.951056540f}, {0.302785784f, -0.953058660f},
+{0.296541572f, -0.955019951f}, {0.290284663f, -0.956940353f},
+{0.284015357f, -0.958819747f}, {0.277733833f, -0.960658073f},
+{0.271440446f, -0.962455213f}, {0.265135437f, -0.964211166f},
+{0.258819044f, -0.965925813f}, {0.252491564f, -0.967599094f},
+{0.246153295f, -0.969230890f}, {0.239804462f, -0.970821202f},
+{0.233445361f, -0.972369909f}, {0.227076262f, -0.973876953f},
+{0.220697433f, -0.975342333f}, {0.214309156f, -0.976765871f},
+{0.207911685f, -0.978147626f}, {0.201505318f, -0.979487419f},
+{0.195090324f, -0.980785251f}, {0.188666970f, -0.982041121f},
+{0.182235524f, -0.983254910f}, {0.175796285f, -0.984426558f},
+{0.169349506f, -0.985556066f}, {0.162895471f, -0.986643314f},
+{0.156434461f, -0.987688363f}, {0.149966761f, -0.988691032f},
+{0.143492624f, -0.989651382f}, {0.137012348f, -0.990569353f},
+{0.130526185f, -0.991444886f}, {0.124034449f, -0.992277920f},
+{0.117537394f, -0.993068457f}, {0.111035310f, -0.993816435f},
+{0.104528464f, -0.994521916f}, {0.0980171412f, -0.995184720f},
+{0.0915016159f, -0.995804906f}, {0.0849821791f, -0.996382475f},
+{0.0784590989f, -0.996917307f}, {0.0719326511f, -0.997409463f},
+{0.0654031262f, -0.997858942f}, {0.0588708036f, -0.998265624f},
+{0.0523359552f, -0.998629510f}, {0.0457988679f, -0.998950660f},
+{0.0392598175f, -0.999229014f}, {0.0327190831f, -0.999464571f},
+{0.0261769481f, -0.999657333f}, {0.0196336918f, -0.999807239f},
+{0.0130895954f, -0.999914348f}, {0.00654493785f, -0.999978602f},
+{6.12323426e-17f, -1.00000000f}, {-0.00654493785f, -0.999978602f},
+{-0.0130895954f, -0.999914348f}, {-0.0196336918f, -0.999807239f},
+{-0.0261769481f, -0.999657333f}, {-0.0327190831f, -0.999464571f},
+{-0.0392598175f, -0.999229014f}, {-0.0457988679f, -0.998950660f},
+{-0.0523359552f, -0.998629510f}, {-0.0588708036f, -0.998265624f},
+{-0.0654031262f, -0.997858942f}, {-0.0719326511f, -0.997409463f},
+{-0.0784590989f, -0.996917307f}, {-0.0849821791f, -0.996382475f},
+{-0.0915016159f, -0.995804906f}, {-0.0980171412f, -0.995184720f},
+{-0.104528464f, -0.994521916f}, {-0.111035310f, -0.993816435f},
+{-0.117537394f, -0.993068457f}, {-0.124034449f, -0.992277920f},
+{-0.130526185f, -0.991444886f}, {-0.137012348f, -0.990569353f},
+{-0.143492624f, -0.989651382f}, {-0.149966761f, -0.988691032f},
+{-0.156434461f, -0.987688363f}, {-0.162895471f, -0.986643314f},
+{-0.169349506f, -0.985556066f}, {-0.175796285f, -0.984426558f},
+{-0.182235524f, -0.983254910f}, {-0.188666970f, -0.982041121f},
+{-0.195090324f, -0.980785251f}, {-0.201505318f, -0.979487419f},
+{-0.207911685f, -0.978147626f}, {-0.214309156f, -0.976765871f},
+{-0.220697433f, -0.975342333f}, {-0.227076262f, -0.973876953f},
+{-0.233445361f, -0.972369909f}, {-0.239804462f, -0.970821202f},
+{-0.246153295f, -0.969230890f}, {-0.252491564f, -0.967599094f},
+{-0.258819044f, -0.965925813f}, {-0.265135437f, -0.964211166f},
+{-0.271440446f, -0.962455213f}, {-0.277733833f, -0.960658073f},
+{-0.284015357f, -0.958819747f}, {-0.290284663f, -0.956940353f},
+{-0.296541572f, -0.955019951f}, {-0.302785784f, -0.953058660f},
+{-0.309017003f, -0.951056540f}, {-0.315234989f, -0.949013650f},
+{-0.321439475f, -0.946930110f}, {-0.327630192f, -0.944806039f},
+{-0.333806872f, -0.942641497f}, {-0.339969248f, -0.940436542f},
+{-0.346117049f, -0.938191354f}, {-0.352250040f, -0.935905933f},
+{-0.358367950f, -0.933580399f}, {-0.364470512f, -0.931214929f},
+{-0.370557427f, -0.928809524f}, {-0.376628488f, -0.926364362f},
+{-0.382683426f, -0.923879504f}, {-0.388721973f, -0.921355128f},
+{-0.394743860f, -0.918791234f}, {-0.400748819f, -0.916187942f},
+{-0.406736642f, -0.913545430f}, {-0.412707031f, -0.910863817f},
+{-0.418659747f, -0.908143163f}, {-0.424594522f, -0.905383646f},
+{-0.430511087f, -0.902585268f}, {-0.436409235f, -0.899748266f},
+{-0.442288697f, -0.896872759f}, {-0.448149204f, -0.893958807f},
+{-0.453990489f, -0.891006529f}, {-0.459812373f, -0.888016105f},
+{-0.465614527f, -0.884987652f}, {-0.471396744f, -0.881921291f},
+{-0.477158755f, -0.878817141f}, {-0.482900351f, -0.875675321f},
+{-0.488621235f, -0.872496009f}, {-0.494321197f, -0.869279325f},
+{-0.500000000f, -0.866025388f}, {-0.505657375f, -0.862734377f},
+{-0.511293113f, -0.859406412f}, {-0.516906917f, -0.856041610f},
+{-0.522498548f, -0.852640152f}, {-0.528067827f, -0.849202156f},
+{-0.533614516f, -0.845727801f}, {-0.539138317f, -0.842217207f},
+{-0.544639051f, -0.838670552f}, {-0.550116420f, -0.835087955f},
+{-0.555570245f, -0.831469595f}, {-0.561000228f, -0.827815652f},
+{-0.566406250f, -0.824126184f}, {-0.571787953f, -0.820401430f},
+{-0.577145219f, -0.816641569f}, {-0.582477689f, -0.812846661f},
+{-0.587785244f, -0.809017003f}, {-0.593067646f, -0.805152655f},
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+{0.321439475f, 0.946930110f}, {0.327630192f, 0.944806039f},
+{0.333806872f, 0.942641497f}, {0.339969248f, 0.940436542f},
+{0.346117049f, 0.938191354f}, {0.352250040f, 0.935905933f},
+{0.358367950f, 0.933580399f}, {0.364470512f, 0.931214929f},
+{0.370557427f, 0.928809524f}, {0.376628488f, 0.926364362f},
+{0.382683426f, 0.923879504f}, {0.388721973f, 0.921355128f},
+{0.394743860f, 0.918791234f}, {0.400748819f, 0.916187942f},
+{0.406736642f, 0.913545430f}, {0.412707031f, 0.910863817f},
+{0.418659747f, 0.908143163f}, {0.424594522f, 0.905383646f},
+{0.430511087f, 0.902585268f}, {0.436409235f, 0.899748266f},
+{0.442288697f, 0.896872759f}, {0.448149204f, 0.893958807f},
+{0.453990489f, 0.891006529f}, {0.459812373f, 0.888016105f},
+{0.465614527f, 0.884987652f}, {0.471396744f, 0.881921291f},
+{0.477158755f, 0.878817141f}, {0.482900351f, 0.875675321f},
+{0.488621235f, 0.872496009f}, {0.494321197f, 0.869279325f},
+{0.500000000f, 0.866025388f}, {0.505657375f, 0.862734377f},
+{0.511293113f, 0.859406412f}, {0.516906917f, 0.856041610f},
+{0.522498548f, 0.852640152f}, {0.528067827f, 0.849202156f},
+{0.533614516f, 0.845727801f}, {0.539138317f, 0.842217207f},
+{0.544639051f, 0.838670552f}, {0.550116420f, 0.835087955f},
+{0.555570245f, 0.831469595f}, {0.561000228f, 0.827815652f},
+{0.566406250f, 0.824126184f}, {0.571787953f, 0.820401430f},
+{0.577145219f, 0.816641569f}, {0.582477689f, 0.812846661f},
+{0.587785244f, 0.809017003f}, {0.593067646f, 0.805152655f},
+{0.598324597f, 0.801253796f}, {0.603555918f, 0.797320664f},
+{0.608761430f, 0.793353319f}, {0.613940835f, 0.789352059f},
+{0.619093955f, 0.785316944f}, {0.624220550f, 0.781248152f},
+{0.629320383f, 0.777145982f}, {0.634393275f, 0.773010433f},
+{0.639438987f, 0.768841803f}, {0.644457340f, 0.764640272f},
+{0.649448037f, 0.760405958f}, {0.654410958f, 0.756139100f},
+{0.659345806f, 0.751839817f}, {0.664252460f, 0.747508347f},
+{0.669130623f, 0.743144810f}, {0.673980117f, 0.738749504f},
+{0.678800762f, 0.734322488f}, {0.683592319f, 0.729864061f},
+{0.688354552f, 0.725374401f}, {0.693087339f, 0.720853567f},
+{0.697790444f, 0.716301918f}, {0.702463686f, 0.711719632f},
+{0.707106769f, 0.707106769f}, {0.711719632f, 0.702463686f},
+{0.716301918f, 0.697790444f}, {0.720853567f, 0.693087339f},
+{0.725374401f, 0.688354552f}, {0.729864061f, 0.683592319f},
+{0.734322488f, 0.678800762f}, {0.738749504f, 0.673980117f},
+{0.743144810f, 0.669130623f}, {0.747508347f, 0.664252460f},
+{0.751839817f, 0.659345806f}, {0.756139100f, 0.654410958f},
+{0.760405958f, 0.649448037f}, {0.764640272f, 0.644457340f},
+{0.768841803f, 0.639438987f}, {0.773010433f, 0.634393275f},
+{0.777145982f, 0.629320383f}, {0.781248152f, 0.624220550f},
+{0.785316944f, 0.619093955f}, {0.789352059f, 0.613940835f},
+{0.793353319f, 0.608761430f}, {0.797320664f, 0.603555918f},
+{0.801253796f, 0.598324597f}, {0.805152655f, 0.593067646f},
+{0.809017003f, 0.587785244f}, {0.812846661f, 0.582477689f},
+{0.816641569f, 0.577145219f}, {0.820401430f, 0.571787953f},
+{0.824126184f, 0.566406250f}, {0.827815652f, 0.561000228f},
+{0.831469595f, 0.555570245f}, {0.835087955f, 0.550116420f},
+{0.838670552f, 0.544639051f}, {0.842217207f, 0.539138317f},
+{0.845727801f, 0.533614516f}, {0.849202156f, 0.528067827f},
+{0.852640152f, 0.522498548f}, {0.856041610f, 0.516906917f},
+{0.859406412f, 0.511293113f}, {0.862734377f, 0.505657375f},
+{0.866025388f, 0.500000000f}, {0.869279325f, 0.494321197f},
+{0.872496009f, 0.488621235f}, {0.875675321f, 0.482900351f},
+{0.878817141f, 0.477158755f}, {0.881921291f, 0.471396744f},
+{0.884987652f, 0.465614527f}, {0.888016105f, 0.459812373f},
+{0.891006529f, 0.453990489f}, {0.893958807f, 0.448149204f},
+{0.896872759f, 0.442288697f}, {0.899748266f, 0.436409235f},
+{0.902585268f, 0.430511087f}, {0.905383646f, 0.424594522f},
+{0.908143163f, 0.418659747f}, {0.910863817f, 0.412707031f},
+{0.913545430f, 0.406736642f}, {0.916187942f, 0.400748819f},
+{0.918791234f, 0.394743860f}, {0.921355128f, 0.388721973f},
+{0.923879504f, 0.382683426f}, {0.926364362f, 0.376628488f},
+{0.928809524f, 0.370557427f}, {0.931214929f, 0.364470512f},
+{0.933580399f, 0.358367950f}, {0.935905933f, 0.352250040f},
+{0.938191354f, 0.346117049f}, {0.940436542f, 0.339969248f},
+{0.942641497f, 0.333806872f}, {0.944806039f, 0.327630192f},
+{0.946930110f, 0.321439475f}, {0.949013650f, 0.315234989f},
+{0.951056540f, 0.309017003f}, {0.953058660f, 0.302785784f},
+{0.955019951f, 0.296541572f}, {0.956940353f, 0.290284663f},
+{0.958819747f, 0.284015357f}, {0.960658073f, 0.277733833f},
+{0.962455213f, 0.271440446f}, {0.964211166f, 0.265135437f},
+{0.965925813f, 0.258819044f}, {0.967599094f, 0.252491564f},
+{0.969230890f, 0.246153295f}, {0.970821202f, 0.239804462f},
+{0.972369909f, 0.233445361f}, {0.973876953f, 0.227076262f},
+{0.975342333f, 0.220697433f}, {0.976765871f, 0.214309156f},
+{0.978147626f, 0.207911685f}, {0.979487419f, 0.201505318f},
+{0.980785251f, 0.195090324f}, {0.982041121f, 0.188666970f},
+{0.983254910f, 0.182235524f}, {0.984426558f, 0.175796285f},
+{0.985556066f, 0.169349506f}, {0.986643314f, 0.162895471f},
+{0.987688363f, 0.156434461f}, {0.988691032f, 0.149966761f},
+{0.989651382f, 0.143492624f}, {0.990569353f, 0.137012348f},
+{0.991444886f, 0.130526185f}, {0.992277920f, 0.124034449f},
+{0.993068457f, 0.117537394f}, {0.993816435f, 0.111035310f},
+{0.994521916f, 0.104528464f}, {0.995184720f, 0.0980171412f},
+{0.995804906f, 0.0915016159f}, {0.996382475f, 0.0849821791f},
+{0.996917307f, 0.0784590989f}, {0.997409463f, 0.0719326511f},
+{0.997858942f, 0.0654031262f}, {0.998265624f, 0.0588708036f},
+{0.998629510f, 0.0523359552f}, {0.998950660f, 0.0457988679f},
+{0.999229014f, 0.0392598175f}, {0.999464571f, 0.0327190831f},
+{0.999657333f, 0.0261769481f}, {0.999807239f, 0.0196336918f},
+{0.999914348f, 0.0130895954f}, {0.999978602f, 0.00654493785f},
+};
+
+const kiss_fft_state rnn_kfft = {
+960, /* nfft */
+0.0010416667f, /* scale */
+-1, /* shift */
+{5, 192, 3, 64, 4, 16, 4, 4, 4, 1, 0, 0, 0, 0, 0, 0, }, /* factors */
+fft_bitrev, /* bitrev*/
+fft_twiddles, /* twiddles*/
+(arch_fft_state *)&arch_fft, /* arch_fft*/
+};
+
+const float rnn_half_window[] = {
+4.20549168e-06f, 3.78491532e-05f, 0.000105135041f, 0.000206060256f, 0.000340620492f,
+0.000508809986f, 0.000710621476f, 0.000946046319f, 0.00121507444f, 0.00151769421f,
+0.00185389258f, 0.00222365512f, 0.00262696599f, 0.00306380726f, 0.00353416055f,
+0.00403800514f, 0.00457531959f, 0.00514607970f, 0.00575026125f, 0.00638783723f,
+0.00705878017f, 0.00776306028f, 0.00850064680f, 0.00927150715f, 0.0100756064f,
+0.0109129101f, 0.0117833801f, 0.0126869772f, 0.0136236614f, 0.0145933898f,
+0.0155961197f, 0.0166318044f, 0.0177003983f, 0.0188018531f, 0.0199361145f,
+0.0211031344f, 0.0223028567f, 0.0235352255f, 0.0248001851f, 0.0260976739f,
+0.0274276342f, 0.0287899990f, 0.0301847085f, 0.0316116922f, 0.0330708846f,
+0.0345622115f, 0.0360856056f, 0.0376409888f, 0.0392282903f, 0.0408474281f,
+0.0424983241f, 0.0441808924f, 0.0458950549f, 0.0476407260f, 0.0494178124f,
+0.0512262285f, 0.0530658774f, 0.0549366735f, 0.0568385124f, 0.0587713011f,
+0.0607349351f, 0.0627293140f, 0.0647543296f, 0.0668098852f, 0.0688958541f,
+0.0710121393f, 0.0731586292f, 0.0753351897f, 0.0775417164f, 0.0797780901f,
+0.0820441842f, 0.0843398646f, 0.0866650119f, 0.0890194997f, 0.0914031938f,
+0.0938159525f, 0.0962576419f, 0.0987281203f, 0.101227246f, 0.103754878f,
+0.106310867f, 0.108895063f, 0.111507311f, 0.114147455f, 0.116815343f,
+0.119510807f, 0.122233689f, 0.124983832f, 0.127761051f, 0.130565181f,
+0.133396059f, 0.136253506f, 0.139137328f, 0.142047361f, 0.144983411f,
+0.147945285f, 0.150932819f, 0.153945804f, 0.156984031f, 0.160047337f,
+0.163135484f, 0.166248307f, 0.169385567f, 0.172547072f, 0.175732598f,
+0.178941950f, 0.182174906f, 0.185431242f, 0.188710734f, 0.192013159f,
+0.195338294f, 0.198685899f, 0.202055752f, 0.205447599f, 0.208861232f,
+0.212296382f, 0.215752810f, 0.219230279f, 0.222728521f, 0.226247311f,
+0.229786381f, 0.233345464f, 0.236924306f, 0.240522653f, 0.244140238f,
+0.247776777f, 0.251432031f, 0.255105674f, 0.258797467f, 0.262507141f,
+0.266234398f, 0.269978970f, 0.273740560f, 0.277518868f, 0.281313598f,
+0.285124481f, 0.288951218f, 0.292793512f, 0.296651065f, 0.300523549f,
+0.304410696f, 0.308312178f, 0.312227666f, 0.316156894f, 0.320099503f,
+0.324055225f, 0.328023702f, 0.332004637f, 0.335997701f, 0.340002567f,
+0.344018906f, 0.348046392f, 0.352084726f, 0.356133521f, 0.360192508f,
+0.364261299f, 0.368339598f, 0.372427016f, 0.376523286f, 0.380627990f,
+0.384740859f, 0.388861477f, 0.392989576f, 0.397124738f, 0.401266664f,
+0.405414969f, 0.409569323f, 0.413729399f, 0.417894781f, 0.422065198f,
+0.426240236f, 0.430419534f, 0.434602767f, 0.438789606f, 0.442979604f,
+0.447172493f, 0.451367885f, 0.455565393f, 0.459764689f, 0.463965416f,
+0.468167186f, 0.472369671f, 0.476572484f, 0.480775267f, 0.484977663f,
+0.489179343f, 0.493379891f, 0.497579008f, 0.501776278f, 0.505971372f,
+0.510163903f, 0.514353573f, 0.518539906f, 0.522722721f, 0.526901484f,
+0.531075954f, 0.535245717f, 0.539410412f, 0.543569744f, 0.547723293f,
+0.551870763f, 0.556011736f, 0.560145974f, 0.564273000f, 0.568392515f,
+0.572504222f, 0.576607704f, 0.580702662f, 0.584788740f, 0.588865638f,
+0.592932940f, 0.596990347f, 0.601037502f, 0.605074167f, 0.609099925f,
+0.613114417f, 0.617117405f, 0.621108532f, 0.625087440f, 0.629053831f,
+0.633007407f, 0.636947870f, 0.640874863f, 0.644788086f, 0.648687243f,
+0.652572036f, 0.656442165f, 0.660297334f, 0.664137185f, 0.667961538f,
+0.671769977f, 0.675562322f, 0.679338276f, 0.683097482f, 0.686839759f,
+0.690564752f, 0.694272280f, 0.697961986f, 0.701633692f, 0.705287039f,
+0.708921850f, 0.712537885f, 0.716134787f, 0.719712436f, 0.723270535f,
+0.726808906f, 0.730327189f, 0.733825266f, 0.737302899f, 0.740759790f,
+0.744195819f, 0.747610688f, 0.751004279f, 0.754376352f, 0.757726669f,
+0.761055112f, 0.764361382f, 0.767645359f, 0.770906866f, 0.774145722f,
+0.777361751f, 0.780554771f, 0.783724606f, 0.786871076f, 0.789994121f,
+0.793093503f, 0.796169102f, 0.799220800f, 0.802248418f, 0.805251837f,
+0.808230937f, 0.811185598f, 0.814115703f, 0.817021132f, 0.819901764f,
+0.822757542f, 0.825588286f, 0.828393936f, 0.831174433f, 0.833929658f,
+0.836659551f, 0.839363992f, 0.842042983f, 0.844696403f, 0.847324252f,
+0.849926353f, 0.852502763f, 0.855053425f, 0.857578218f, 0.860077202f,
+0.862550259f, 0.864997447f, 0.867418647f, 0.869813919f, 0.872183204f,
+0.874526560f, 0.876843870f, 0.879135191f, 0.881400526f, 0.883639932f,
+0.885853291f, 0.888040781f, 0.890202343f, 0.892337978f, 0.894447744f,
+0.896531701f, 0.898589849f, 0.900622249f, 0.902628958f, 0.904610038f,
+0.906565487f, 0.908495426f, 0.910399914f, 0.912279010f, 0.914132774f,
+0.915961266f, 0.917764664f, 0.919542909f, 0.921296239f, 0.923024654f,
+0.924728215f, 0.926407158f, 0.928061485f, 0.929691315f, 0.931296766f,
+0.932878017f, 0.934435070f, 0.935968161f, 0.937477291f, 0.938962698f,
+0.940424502f, 0.941862822f, 0.943277776f, 0.944669485f, 0.946038187f,
+0.947383940f, 0.948706925f, 0.950007319f, 0.951285243f, 0.952540874f,
+0.953774393f, 0.954985917f, 0.956175685f, 0.957343817f, 0.958490491f,
+0.959615886f, 0.960720181f, 0.961803555f, 0.962866247f, 0.963908315f,
+0.964930058f, 0.965931594f, 0.966913164f, 0.967874944f, 0.968817174f,
+0.969739914f, 0.970643520f, 0.971528113f, 0.972393870f, 0.973241091f,
+0.974069893f, 0.974880517f, 0.975673139f, 0.976447999f, 0.977205336f,
+0.977945268f, 0.978668094f, 0.979374051f, 0.980063200f, 0.980735898f,
+0.981392324f, 0.982032716f, 0.982657254f, 0.983266115f, 0.983859658f,
+0.984437943f, 0.985001266f, 0.985549867f, 0.986083925f, 0.986603677f,
+0.987109363f, 0.987601161f, 0.988079309f, 0.988544047f, 0.988995552f,
+0.989434063f, 0.989859879f, 0.990273118f, 0.990674019f, 0.991062820f,
+0.991439700f, 0.991804957f, 0.992158771f, 0.992501318f, 0.992832899f,
+0.993153632f, 0.993463814f, 0.993763626f, 0.994053245f, 0.994332969f,
+0.994602919f, 0.994863331f, 0.995114446f, 0.995356441f, 0.995589554f,
+0.995813966f, 0.996029854f, 0.996237516f, 0.996437073f, 0.996628702f,
+0.996812642f, 0.996989131f, 0.997158289f, 0.997320294f, 0.997475445f,
+0.997623861f, 0.997765720f, 0.997901261f, 0.998030603f, 0.998153925f,
+0.998271465f, 0.998383403f, 0.998489857f, 0.998591006f, 0.998687088f,
+0.998778164f, 0.998864532f, 0.998946249f, 0.999023557f, 0.999096513f,
+0.999165416f, 0.999230266f, 0.999291301f, 0.999348700f, 0.999402523f,
+0.999453008f, 0.999500215f, 0.999544322f, 0.999585509f, 0.999623775f,
+0.999659419f, 0.999692440f, 0.999723017f, 0.999751270f, 0.999777317f,
+0.999801278f, 0.999823213f, 0.999843359f, 0.999861658f, 0.999878347f,
+0.999893486f, 0.999907196f, 0.999919534f, 0.999930561f, 0.999940455f,
+0.999949217f, 0.999957025f, 0.999963880f, 0.999969840f, 0.999975085f,
+0.999979615f, 0.999983490f, 0.999986768f, 0.999989510f, 0.999991834f,
+0.999993742f, 0.999995291f, 0.999996543f, 0.999997556f, 0.999998271f,
+0.999998868f, 0.999999285f, 0.999999523f, 0.999999762f, 0.999999881f,
+0.999999940f, 1.00000000f, 1.00000000f, 1.00000000f, 1.00000000f,
+};
+
+const float rnn_dct_table[] = {
+0.707106769f, 0.998795450f, 0.995184720f, 0.989176512f, 0.980785251f,
+0.970031261f, 0.956940353f, 0.941544056f, 0.923879504f, 0.903989315f,
+0.881921291f, 0.857728601f, 0.831469595f, 0.803207517f, 0.773010433f,
+0.740951121f, 0.707106769f, 0.671558976f, 0.634393275f, 0.595699310f,
+0.555570245f, 0.514102757f, 0.471396744f, 0.427555084f, 0.382683426f,
+0.336889863f, 0.290284663f, 0.242980182f, 0.195090324f, 0.146730468f,
+0.0980171412f, 0.0490676761f, 0.707106769f, 0.989176512f, 0.956940353f,
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+-0.980785251f, 0.998795450f, -0.956940353f, 0.857728601f, -0.707106769f,
+0.514102757f, -0.290284663f, 0.0490676761f, 0.195090324f, -0.427555084f,
+0.634393275f, -0.803207517f, 0.923879504f, -0.989176512f, 0.995184720f,
+-0.941544056f, 0.831469595f, -0.671558976f, 0.471396744f, -0.242980182f,
+0.707106769f, -0.989176512f, 0.956940353f, -0.903989315f, 0.831469595f,
+-0.740951121f, 0.634393275f, -0.514102757f, 0.382683426f, -0.242980182f,
+0.0980171412f, 0.0490676761f, -0.195090324f, 0.336889863f, -0.471396744f,
+0.595699310f, -0.707106769f, 0.803207517f, -0.881921291f, 0.941544056f,
+-0.980785251f, 0.998795450f, -0.995184720f, 0.970031261f, -0.923879504f,
+0.857728601f, -0.773010433f, 0.671558976f, -0.555570245f, 0.427555084f,
+-0.290284663f, 0.146730468f, 0.707106769f, -0.998795450f, 0.995184720f,
+-0.989176512f, 0.980785251f, -0.970031261f, 0.956940353f, -0.941544056f,
+0.923879504f, -0.903989315f, 0.881921291f, -0.857728601f, 0.831469595f,
+-0.803207517f, 0.773010433f, -0.740951121f, 0.707106769f, -0.671558976f,
+0.634393275f, -0.595699310f, 0.555570245f, -0.514102757f, 0.471396744f,
+-0.427555084f, 0.382683426f, -0.336889863f, 0.290284663f, -0.242980182f,
+0.195090324f, -0.146730468f, 0.0980171412f, -0.0490676761f, };

src/modules/ZoomIt/ZoomIt/rnnoise/vec.h

@@ -0,0 +1,388 @@
+/* Copyright (c) 2018 Mozilla
+                 2008-2011 Octasic Inc.
+                 2012-2017 Jean-Marc Valin */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef VEC_H
+#define VEC_H
+
+#include "opus_types.h"
+#include "common.h"
+#include <math.h>
+#include "arch.h"
+#include "x86/x86_arch_macros.h"
+
+
+#if defined(__AVX__) || defined(__SSE2__)
+#include "vec_avx.h"
+#elif (defined(__ARM_NEON__) || defined(__ARM_NEON)) && !defined(DISABLE_NEON)
+#include "vec_neon.h"
+#else
+
+#define MAX_INPUTS (2048)
+
+#define NO_OPTIMIZATIONS
+
+static inline void sgemv16x1(float *out, const float *weights, int rows, int cols, int col_stride, const float *x)
+{
+   int i, j;
+   RNN_CLEAR(out, rows);
+   for (i=0;i<rows;i+=16)
+   {
+      for (j=0;j<cols;j++)
+      {
+         const float * restrict w;
+         float * restrict y;
+         float xj;
+         w = &weights[j*col_stride + i];
+         xj = x[j];
+         y = &out[i];
+         y[0] += w[0]*xj;
+         y[1] += w[1]*xj;
+         y[2] += w[2]*xj;
+         y[3] += w[3]*xj;
+         y[4] += w[4]*xj;
+         y[5] += w[5]*xj;
+         y[6] += w[6]*xj;
+         y[7] += w[7]*xj;
+         y[8] += w[8]*xj;
+         y[9] += w[9]*xj;
+         y[10] += w[10]*xj;
+         y[11] += w[11]*xj;
+         y[12] += w[12]*xj;
+         y[13] += w[13]*xj;
+         y[14] += w[14]*xj;
+         y[15] += w[15]*xj;
+      }
+   }
+}
+
+static inline void sgemv8x1(float *out, const float *weights, int rows, int cols, int col_stride, const float *x)
+{
+   int i, j;
+   RNN_CLEAR(out, rows);
+   for (i=0;i<rows;i+=8)
+   {
+      for (j=0;j<cols;j++)
+      {
+         const float * restrict w;
+         float * restrict y;
+         float xj;
+         w = &weights[j*col_stride + i];
+         xj = x[j];
+         y = &out[i];
+         y[0] += w[0]*xj;
+         y[1] += w[1]*xj;
+         y[2] += w[2]*xj;
+         y[3] += w[3]*xj;
+         y[4] += w[4]*xj;
+         y[5] += w[5]*xj;
+         y[6] += w[6]*xj;
+         y[7] += w[7]*xj;
+      }
+   }
+}
+
+static inline void sgemv(float *out, const float *weights, int rows, int cols, int col_stride, const float *x)
+{
+   if ((rows&0xf) == 0) sgemv16x1(out, weights, rows, cols, col_stride, x);
+   else if ((rows&0x7) == 0) sgemv8x1(out, weights, rows, cols, col_stride, x);
+   else {
+      int i, j;
+      for (i=0;i<rows;i++)
+      {
+         out[i] = 0;
+         for (j=0;j<cols;j++) out[i] += weights[j*col_stride + i]*x[j];
+      }
+   }
+}
+
+static inline void sparse_sgemv8x4(float *out, const float *w, const int *idx, int rows, const float *x)
+{
+   int i, j;
+   RNN_CLEAR(out, rows);
+   for (i=0;i<rows;i+=8)
+   {
+      int cols;
+      cols = *idx++;
+      for (j=0;j<cols;j++)
+      {
+         int pos;
+         float * restrict y;
+         float xj0, xj1, xj2, xj3;
+         pos = (*idx++);
+         xj0 = x[pos+0];
+         xj1 = x[pos+1];
+         xj2 = x[pos+2];
+         xj3 = x[pos+3];
+         y = &out[i];
+         y[0] += w[0]*xj0;
+         y[1] += w[1]*xj0;
+         y[2] += w[2]*xj0;
+         y[3] += w[3]*xj0;
+         y[4] += w[4]*xj0;
+         y[5] += w[5]*xj0;
+         y[6] += w[6]*xj0;
+         y[7] += w[7]*xj0;
+
+         y[0] += w[8]*xj1;
+         y[1] += w[9]*xj1;
+         y[2] += w[10]*xj1;
+         y[3] += w[11]*xj1;
+         y[4] += w[12]*xj1;
+         y[5] += w[13]*xj1;
+         y[6] += w[14]*xj1;
+         y[7] += w[15]*xj1;
+
+         y[0] += w[16]*xj2;
+         y[1] += w[17]*xj2;
+         y[2] += w[18]*xj2;
+         y[3] += w[19]*xj2;
+         y[4] += w[20]*xj2;
+         y[5] += w[21]*xj2;
+         y[6] += w[22]*xj2;
+         y[7] += w[23]*xj2;
+
+         y[0] += w[24]*xj3;
+         y[1] += w[25]*xj3;
+         y[2] += w[26]*xj3;
+         y[3] += w[27]*xj3;
+         y[4] += w[28]*xj3;
+         y[5] += w[29]*xj3;
+         y[6] += w[30]*xj3;
+         y[7] += w[31]*xj3;
+         w += 32;
+      }
+   }
+}
+
+#ifdef USE_SU_BIAS
+static inline void sparse_cgemv8x4(float *out, const opus_int8 *w, const int *idx, const float *scale, int rows, int cols, const float *_x)
+{
+   int i, j;
+   unsigned char x[MAX_INPUTS];
+   for (i=0;i<rows;i++) out[i] = 0;
+   for (i=0;i<cols;i++) x[i] = 127+floor(.5+127*_x[i]);
+   for (i=0;i<rows;i+=8)
+   {
+      int colblocks;
+      colblocks = *idx++;
+      for (j=0;j<colblocks;j++)
+      {
+         int pos;
+         float * restrict y;
+         int xj0, xj1, xj2, xj3;
+         pos = (*idx++);
+         xj0 = x[pos+0];
+         xj1 = x[pos+1];
+         xj2 = x[pos+2];
+         xj3 = x[pos+3];
+         y = &out[i];
+         y[0] += (w[0]*xj0+w[1]*xj1+w[2]*xj2+w[3]*xj3);
+         y[1] += (w[4]*xj0+w[5]*xj1+w[6]*xj2+w[7]*xj3);
+         y[2] += (w[8]*xj0+w[9]*xj1+w[10]*xj2+w[11]*xj3);
+         y[3] += (w[12]*xj0+w[13]*xj1+w[14]*xj2+w[15]*xj3);
+         y[4] += (w[16]*xj0+w[17]*xj1+w[18]*xj2+w[19]*xj3);
+         y[5] += (w[20]*xj0+w[21]*xj1+w[22]*xj2+w[23]*xj3);
+         y[6] += (w[24]*xj0+w[25]*xj1+w[26]*xj2+w[27]*xj3);
+         y[7] += (w[28]*xj0+w[29]*xj1+w[30]*xj2+w[31]*xj3);
+         w += 32;
+      }
+   }
+   for (i=0;i<rows;i++) out[i] *= scale[i];
+}
+static inline void cgemv8x4(float *out, const opus_int8 *w, const float *scale, int rows, int cols, const float *_x)
+{
+   int i, j;
+   unsigned char x[MAX_INPUTS];
+   for (i=0;i<rows;i++) out[i] = 0;
+   for (i=0;i<cols;i++) x[i] = 127+(int)floor(.5+127*_x[i]);
+   for (i=0;i<rows;i+=8)
+   {
+      for (j=0;j<cols;j+=4)
+      {
+         float *y;
+         float xj0, xj1, xj2, xj3;
+         xj0 = x[j+0];
+         xj1 = x[j+1];
+         xj2 = x[j+2];
+         xj3 = x[j+3];
+         y = &out[i];
+         y[0] += (w[0]*xj0+w[1]*xj1+w[2]*xj2+w[3]*xj3);
+         y[1] += (w[4]*xj0+w[5]*xj1+w[6]*xj2+w[7]*xj3);
+         y[2] += (w[8]*xj0+w[9]*xj1+w[10]*xj2+w[11]*xj3);
+         y[3] += (w[12]*xj0+w[13]*xj1+w[14]*xj2+w[15]*xj3);
+         y[4] += (w[16]*xj0+w[17]*xj1+w[18]*xj2+w[19]*xj3);
+         y[5] += (w[20]*xj0+w[21]*xj1+w[22]*xj2+w[23]*xj3);
+         y[6] += (w[24]*xj0+w[25]*xj1+w[26]*xj2+w[27]*xj3);
+         y[7] += (w[28]*xj0+w[29]*xj1+w[30]*xj2+w[31]*xj3);
+         w += 32;
+      }
+   }
+   for (i=0;i<rows;i++) out[i] *= scale[i];
+}
+#else
+static inline void sparse_cgemv8x4(float *out, const opus_int8 *w, const int *idx, const float *scale, int rows, int cols, const float *_x)
+{
+   int i, j;
+   opus_int8 x[MAX_INPUTS];
+   for (i=0;i<rows;i++) out[i] = 0;
+   for (i=0;i<cols;i++) x[i] = (int)floor(.5+127*_x[i]);
+   for (i=0;i<rows;i+=8)
+   {
+      int colblocks;
+      colblocks = *idx++;
+      for (j=0;j<colblocks;j++)
+      {
+         int pos;
+         float * restrict y;
+         int xj0, xj1, xj2, xj3;
+         pos = (*idx++);
+         xj0 = x[pos+0];
+         xj1 = x[pos+1];
+         xj2 = x[pos+2];
+         xj3 = x[pos+3];
+         y = &out[i];
+         y[0] += (w[0]*xj0+w[1]*xj1+w[2]*xj2+w[3]*xj3);
+         y[1] += (w[4]*xj0+w[5]*xj1+w[6]*xj2+w[7]*xj3);
+         y[2] += (w[8]*xj0+w[9]*xj1+w[10]*xj2+w[11]*xj3);
+         y[3] += (w[12]*xj0+w[13]*xj1+w[14]*xj2+w[15]*xj3);
+         y[4] += (w[16]*xj0+w[17]*xj1+w[18]*xj2+w[19]*xj3);
+         y[5] += (w[20]*xj0+w[21]*xj1+w[22]*xj2+w[23]*xj3);
+         y[6] += (w[24]*xj0+w[25]*xj1+w[26]*xj2+w[27]*xj3);
+         y[7] += (w[28]*xj0+w[29]*xj1+w[30]*xj2+w[31]*xj3);
+         w += 32;
+      }
+   }
+   for (i=0;i<rows;i++) out[i] *= scale[i];
+}
+static inline void cgemv8x4(float *out, const opus_int8 *w, const float *scale, int rows, int cols, const float *_x)
+{
+   int i, j;
+   opus_int8 x[MAX_INPUTS];
+   for (i=0;i<rows;i++) out[i] = 0;
+   for (i=0;i<cols;i++) x[i] = (int)floor(.5+127*_x[i]);
+   for (i=0;i<rows;i+=8)
+   {
+      for (j=0;j<cols;j+=4)
+      {
+         float *y;
+         float xj0, xj1, xj2, xj3;
+         xj0 = x[j+0];
+         xj1 = x[j+1];
+         xj2 = x[j+2];
+         xj3 = x[j+3];
+         y = &out[i];
+         y[0] += (w[0]*xj0+w[1]*xj1+w[2]*xj2+w[3]*xj3);
+         y[1] += (w[4]*xj0+w[5]*xj1+w[6]*xj2+w[7]*xj3);
+         y[2] += (w[8]*xj0+w[9]*xj1+w[10]*xj2+w[11]*xj3);
+         y[3] += (w[12]*xj0+w[13]*xj1+w[14]*xj2+w[15]*xj3);
+         y[4] += (w[16]*xj0+w[17]*xj1+w[18]*xj2+w[19]*xj3);
+         y[5] += (w[20]*xj0+w[21]*xj1+w[22]*xj2+w[23]*xj3);
+         y[6] += (w[24]*xj0+w[25]*xj1+w[26]*xj2+w[27]*xj3);
+         y[7] += (w[28]*xj0+w[29]*xj1+w[30]*xj2+w[31]*xj3);
+         w += 32;
+      }
+   }
+   for (i=0;i<rows;i++) out[i] *= scale[i];
+}
+#endif
+
+/* No AVX2/FMA support */
+#ifndef LPCNET_TEST
+static inline float lpcnet_exp2(float x)
+{
+   int integer;
+   float frac;
+   union {
+      float f;
+      opus_uint32 i;
+   } res;
+   integer = floor(x);
+   if (integer < -50)
+      return 0;
+   frac = x-integer;
+   /* K0 = 1, K1 = log(2), K2 = 3-4*log(2), K3 = 3*log(2) - 2 */
+   res.f = 0.99992522f + frac * (0.69583354f
+           + frac * (0.22606716f + 0.078024523f*frac));
+   res.i = (res.i + (integer<<23)) & 0x7fffffff;
+   return res.f;
+}
+#define lpcnet_exp(x) lpcnet_exp2((x)*1.44269504f)
+
+#define fmadd(a, b, c) ((a)*(b)+(c))
+static OPUS_INLINE float tanh_approx(float x)
+{
+    const float N0 = 952.52801514f;
+    const float N1 = 96.39235687f;
+    const float N2 = 0.60863042f;
+    const float D0 = 952.72399902f;
+    const float D1 = 413.36801147f;
+    const float D2 = 11.88600922f;
+    float X2, num, den;
+    X2 = x*x;
+    num = fmadd(fmadd(N2, X2, N1), X2, N0);
+    den = fmadd(fmadd(D2, X2, D1), X2, D0);
+    num = num*x/den;
+    return MAX32(-1.f, MIN32(1.f, num));
+}
+
+static inline float sigmoid_approx(float x)
+{
+   return .5f + .5f*tanh_approx(.5f*x);
+}
+
+static inline void softmax(float *y, const float *x, int N)
+{
+    int i;
+    for (i=0;i<N;i++)
+        y[i] = lpcnet_exp(x[i]);
+}
+
+static inline void vec_tanh(float *y, const float *x, int N)
+{
+    int i;
+    for (i=0;i<N;i++)
+    {
+        y[i] = tanh_approx(x[i]);
+    }
+}
+
+static inline void vec_sigmoid(float *y, const float *x, int N)
+{
+    int i;
+    for (i=0;i<N;i++)
+    {
+        y[i] = sigmoid_approx(x[i]);
+    }
+}
+#endif
+
+#define SCALE (128.f*127.f)
+#define SCALE_1 (1.f/128.f/127.f)
+
+#endif /*no optimizations*/
+#endif /*VEC_H*/

src/modules/ZoomIt/ZoomIt/rnnoise/x86/dnn_x86.h

@@ -0,0 +1,85 @@
+/* Copyright (c) 2011-2019 Mozilla
+                 2023 Amazon */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifndef DNN_X86_H
+#define DNN_X86_H
+
+#include "cpu_support.h"
+#include "opus_types.h"
+
+void compute_linear_sse4_1(const LinearLayer *linear, float *out, const float *in);
+void compute_activation_sse4_1(float *output, const float *input, int N, int activation);
+void compute_conv2d_sse4_1(const Conv2dLayer *conv, float *out, float *mem, const float *in, int height, int hstride, int activation);
+
+void compute_linear_avx2(const LinearLayer *linear, float *out, const float *in);
+void compute_activation_avx2(float *output, const float *input, int N, int activation);
+void compute_conv2d_avx2(const Conv2dLayer *conv, float *out, float *mem, const float *in, int height, int hstride, int activation);
+
+
+
+#ifdef RNN_ENABLE_X86_RTCD
+
+extern void (*const RNN_COMPUTE_LINEAR_IMPL[OPUS_ARCHMASK + 1])(
+                    const LinearLayer *linear,
+                    float *out,
+                    const float *in
+                    );
+#define OVERRIDE_COMPUTE_LINEAR
+#define compute_linear(linear, out, in, arch) \
+    ((*RNN_COMPUTE_LINEAR_IMPL[(arch) & OPUS_ARCHMASK])(linear, out, in))
+
+
+extern void (*const RNN_COMPUTE_ACTIVATION_IMPL[OPUS_ARCHMASK + 1])(
+                    float *output,
+                    const float *input,
+                    int N,
+                    int activation
+                    );
+#define OVERRIDE_COMPUTE_ACTIVATION
+#define compute_activation(output, input, N, activation, arch) \
+    ((*RNN_COMPUTE_ACTIVATION_IMPL[(arch) & OPUS_ARCHMASK])(output, input, N, activation))
+
+
+extern void (*const RNN_COMPUTE_CONV2D_IMPL[OPUS_ARCHMASK + 1])(
+                    const Conv2dLayer *conv,
+                    float *out,
+                    float *mem,
+                    const float *in,
+                    int height,
+                    int hstride,
+                    int activation
+                    );
+#define OVERRIDE_COMPUTE_CONV2D
+#define compute_conv2d(conv, out, mem, in, height, hstride, activation, arch) \
+    ((*RNN_COMPUTE_CONV2D_IMPL[(arch) & OPUS_ARCHMASK])(conv, out, mem, in, height, hstride, activation))
+
+
+#endif
+
+
+
+#endif /* DNN_X86_H */

src/modules/ZoomIt/ZoomIt/rnnoise/x86/nnet_avx2.c

@@ -0,0 +1,40 @@
+/* Copyright (c) 2018-2019 Mozilla
+                 2023 Amazon */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "x86/x86_arch_macros.h"
+
+#ifndef __AVX2__
+#error nnet_avx2.c is being compiled without AVX2 enabled
+#endif
+
+#define RTCD_ARCH avx2
+
+#include "nnet_arch.h"

src/modules/ZoomIt/ZoomIt/rnnoise/x86/nnet_sse4_1.c

@@ -0,0 +1,40 @@
+/* Copyright (c) 2018-2019 Mozilla
+                 2023 Amazon */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "x86/x86_arch_macros.h"
+
+#ifndef __SSE4_1__
+#error nnet_sse4_1.c is being compiled without SSE4.1 enabled
+#endif
+
+#define RTCD_ARCH sse4_1
+
+#include "nnet_arch.h"

src/modules/ZoomIt/ZoomIt/rnnoise/x86/x86_arch_macros.h

@@ -0,0 +1,47 @@
+/* Copyright (c) 2023 Amazon */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef _MSC_VER
+
+# ifdef OPUS_X86_MAY_HAVE_SSE
+#  ifndef __SSE__
+#   define __SSE__
+#  endif
+# endif
+
+# ifdef OPUS_X86_MAY_HAVE_SSE2
+#  ifndef __SSE2__
+#   define __SSE2__
+#  endif
+# endif
+
+# ifdef OPUS_X86_MAY_HAVE_SSE4_1
+#  ifndef __SSE4_1__
+#   define __SSE4_1__
+#  endif
+# endif
+
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/x86/x86_dnn_map.c

@@ -0,0 +1,74 @@
+/* Copyright (c) 2018-2019 Mozilla
+                 2023 Amazon */
+/*
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR
+   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "x86/x86cpu.h"
+#include "nnet.h"
+
+#ifdef RNN_ENABLE_X86_RTCD
+
+
+void (*const RNN_COMPUTE_LINEAR_IMPL[OPUS_ARCHMASK + 1])(
+         const LinearLayer *linear,
+         float *out,
+         const float *in
+) = {
+  compute_linear_c,                /* non-sse */
+  MAY_HAVE_SSE4_1(compute_linear), /* sse4.1  */
+  MAY_HAVE_AVX2(compute_linear)  /* avx  */
+};
+
+void (*const RNN_COMPUTE_ACTIVATION_IMPL[OPUS_ARCHMASK + 1])(
+         float *output,
+         const float *input,
+         int N,
+         int activation
+) = {
+  compute_activation_c,                /* non-sse */
+  MAY_HAVE_SSE4_1(compute_activation), /* sse4.1  */
+  MAY_HAVE_AVX2(compute_activation)  /* avx  */
+};
+
+void (*const RNN_COMPUTE_CONV2D_IMPL[OPUS_ARCHMASK + 1])(
+         const Conv2dLayer *conv,
+         float *out,
+         float *mem,
+         const float *in,
+         int height,
+         int hstride,
+         int activation
+) = {
+  compute_conv2d_c,                /* non-sse */
+  MAY_HAVE_SSE4_1(compute_conv2d), /* sse4.1  */
+  MAY_HAVE_AVX2(compute_conv2d)  /* avx  */
+};
+
+
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/x86/x86cpu.c

@@ -0,0 +1,166 @@
+/* Copyright (c) 2014, Cisco Systems, INC
+   Written by XiangMingZhu WeiZhou MinPeng YanWang
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "cpu_support.h"
+#include "pitch.h"
+#include "x86cpu.h"
+
+#ifdef RNN_ENABLE_X86_RTCD
+
+#if defined(_MSC_VER)
+
+#include <intrin.h>
+static _inline void cpuid(unsigned int CPUInfo[4], unsigned int InfoType)
+{
+    __cpuid((int*)CPUInfo, InfoType);
+}
+
+#else
+
+#if defined(CPU_INFO_BY_C)
+#include <cpuid.h>
+#endif
+
+static void cpuid(unsigned int CPUInfo[4], unsigned int InfoType)
+{
+#if defined(CPU_INFO_BY_ASM)
+#if defined(__i386__) && defined(__PIC__)
+/* %ebx is PIC register in 32-bit, so mustn't clobber it. */
+    __asm__ __volatile__ (
+        "xchg %%ebx, %1\n"
+        "cpuid\n"
+        "xchg %%ebx, %1\n":
+        "=a" (CPUInfo[0]),
+        "=r" (CPUInfo[1]),
+        "=c" (CPUInfo[2]),
+        "=d" (CPUInfo[3]) :
+        /* We clear ECX to avoid a valgrind false-positive prior to v3.17.0. */
+        "0" (InfoType), "2" (0)
+    );
+#else
+    __asm__ __volatile__ (
+        "cpuid":
+        "=a" (CPUInfo[0]),
+        "=b" (CPUInfo[1]),
+        "=c" (CPUInfo[2]),
+        "=d" (CPUInfo[3]) :
+        /* We clear ECX to avoid a valgrind false-positive prior to v3.17.0. */
+        "0" (InfoType), "2" (0)
+    );
+#endif
+#elif defined(CPU_INFO_BY_C)
+    /* We use __get_cpuid_count to clear ECX to avoid a valgrind false-positive
+        prior to v3.17.0.*/
+    if (!__get_cpuid_count(InfoType, 0, &(CPUInfo[0]), &(CPUInfo[1]), &(CPUInfo[2]), &(CPUInfo[3]))) {
+        /* Our function cannot fail, but __get_cpuid{_count} can.
+           Returning all zeroes will effectively disable all SIMD, which is
+            what we want on CPUs that don't support CPUID. */
+        CPUInfo[3] = CPUInfo[2] = CPUInfo[1] = CPUInfo[0] = 0;
+    }
+#else
+# error "Configured to use x86 RTCD, but no CPU detection method available. " \
+ "Reconfigure with --disable-rtcd (or send patches)."
+#endif
+}
+
+#endif
+
+typedef struct CPU_Feature{
+    /*  SIMD: 128-bit */
+    int HW_SSE;
+    int HW_SSE2;
+    int HW_SSE41;
+    /*  SIMD: 256-bit */
+    int HW_AVX2;
+} CPU_Feature;
+
+static void rnn_cpu_feature_check(CPU_Feature *cpu_feature)
+{
+    unsigned int info[4];
+    unsigned int nIds = 0;
+
+    cpuid(info, 0);
+    nIds = info[0];
+
+    if (nIds >= 1){
+        cpuid(info, 1);
+        cpu_feature->HW_SSE = (info[3] & (1 << 25)) != 0;
+        cpu_feature->HW_SSE2 = (info[3] & (1 << 26)) != 0;
+        cpu_feature->HW_SSE41 = (info[2] & (1 << 19)) != 0;
+        cpu_feature->HW_AVX2 = (info[2] & (1 << 28)) != 0 && (info[2] & (1 << 12)) != 0;
+        if (cpu_feature->HW_AVX2 && nIds >= 7) {
+            cpuid(info, 7);
+            cpu_feature->HW_AVX2 = cpu_feature->HW_AVX2 && (info[1] & (1 << 5)) != 0;
+        } else {
+            cpu_feature->HW_AVX2 = 0;
+        }
+    }
+    else {
+        cpu_feature->HW_SSE = 0;
+        cpu_feature->HW_SSE2 = 0;
+        cpu_feature->HW_SSE41 = 0;
+        cpu_feature->HW_AVX2 = 0;
+    }
+}
+
+static int rnn_select_arch_impl(void)
+{
+    CPU_Feature cpu_feature;
+    int arch;
+
+    rnn_cpu_feature_check(&cpu_feature);
+
+    arch = 0;
+    if (!cpu_feature.HW_SSE41)
+    {
+        return arch;
+    }
+    arch++;
+
+    if (!cpu_feature.HW_AVX2)
+    {
+        return arch;
+    }
+    arch++;
+
+    return arch;
+}
+
+int rnn_select_arch(void) {
+    int arch = rnn_select_arch_impl();
+#ifdef FUZZING
+    /* Randomly downgrade the architecture. */
+    arch = rand()%(arch+1);
+#endif
+    return arch;
+}
+
+#endif

src/modules/ZoomIt/ZoomIt/rnnoise/x86/x86cpu.h

@@ -0,0 +1,88 @@
+/* Copyright (c) 2014, Cisco Systems, INC
+   Written by XiangMingZhu WeiZhou MinPeng YanWang
+
+   Redistribution and use in source and binary forms, with or without
+   modification, are permitted provided that the following conditions
+   are met:
+
+   - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+   - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+   ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+   OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
+#if !defined(X86CPU_H)
+# define X86CPU_H
+
+#  define MAY_HAVE_SSE4_1(name) name ## _sse4_1
+
+#  define MAY_HAVE_AVX2(name) name ## _avx2
+
+# ifdef RNN_ENABLE_X86_RTCD
+int opus_select_arch(void);
+# endif
+
+# if defined(__SSE2__)
+#  include "common.h"
+
+/*MOVD should not impose any alignment restrictions, but the C standard does,
+   and UBSan will report errors if we actually make unaligned accesses.
+  Use this to work around those restrictions (which should hopefully all get
+   optimized to a single MOVD instruction).
+  GCC implemented _mm_loadu_si32() since GCC 11; HOWEVER, there is a bug!
+  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99754
+  LLVM implemented _mm_loadu_si32() since Clang 8.0, however the
+   __clang_major__ version number macro is unreliable, as vendors
+   (specifically, Apple) will use different numbering schemes than upstream.
+  Clang's advice is "use feature detection", but they do not provide feature
+   detection support for specific SIMD functions.
+  We follow the approach from the SIMDe project and instead detect unrelated
+   features that should be available in the version we want (see
+   <https://github.com/simd-everywhere/simde/blob/master/simde/simde-detect-clang.h>).*/
+#  if defined(__clang__)
+#   if __has_warning("-Wextra-semi-stmt") || \
+ __has_builtin(__builtin_rotateleft32)
+#    define OPUS_CLANG_8 (1)
+#   endif
+#  endif
+#  if !defined(_MSC_VER) && !OPUS_GNUC_PREREQ(11,3) && !defined(OPUS_CLANG_8)
+#   include <string.h>
+#   include <emmintrin.h>
+
+#   ifdef _mm_loadu_si32
+#    undef _mm_loadu_si32
+#   endif
+#   define _mm_loadu_si32 WORKAROUND_mm_loadu_si32
+static inline __m128i WORKAROUND_mm_loadu_si32(void const* mem_addr) {
+  int val;
+  memcpy(&val, mem_addr, sizeof(val));
+  return _mm_cvtsi32_si128(val);
+}
+#  elif defined(_MSC_VER)
+    /* MSVC needs this for _mm_loadu_si32 */
+#   include <immintrin.h>
+#  endif
+
+#  define OP_CVTEPI8_EPI32_M32(x) \
+ (_mm_cvtepi8_epi32(_mm_loadu_si32(x)))
+
+#  define OP_CVTEPI16_EPI32_M64(x) \
+ (_mm_cvtepi16_epi32(_mm_loadl_epi64((__m128i *)(void*)(x))))
+
+# endif
+
+#endif

src/modules/cmdpal/ExtensionTemplate/TemplateCmdPalExtension/Directory.Packages.props

@@ -10,7 +10,7 @@
     <PackageVersion Include="Microsoft.Windows.CsWinRT" Version="2.2.0" />
     <PackageVersion Include="Microsoft.Windows.SDK.BuildTools" Version="10.0.26100.4188" />
     <PackageVersion Include="Microsoft.Windows.SDK.BuildTools.MSIX" Version="1.7.20250829.1" />
-    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="2.0.1" />
+    <PackageVersion Include="Microsoft.WindowsAppSDK" Version="2.2.0" />
     <PackageVersion Include="Shmuelie.WinRTServer" Version="2.1.1" />
     <PackageVersion Include="StyleCop.Analyzers" Version="1.2.0-beta.556" />
     <PackageVersion Include="System.Text.Json" Version="9.0.8" />

src/modules/cmdpal/doc/json-rpc-spec/01-architecture.md

@@ -0,0 +1,248 @@
+# 01 - Architecture Overview
+
+## Process Model
+
+Each JavaScript/TypeScript extension runs as an **isolated Node.js process**. The CmdPal host manages these processes through `JsonRpcExtensionService`, which implements the same `IExtensionService` interface used by WinRT and built-in extensions.
+
+```mermaid
+flowchart LR
+     subgraph Host["Host Process (CmdPal)"]
+          JSSVC["JsonRpcExtensionService"]
+          WRAP["JSExtensionWrapper"]
+          RPC["JsonRpcConnection"]
+          PROXY["JSCommandProviderProxy"]
+          ONE["(one per extension)"]
+
+          JSSVC --> WRAP --> RPC --> PROXY
+          JSSVC --> ONE
+     end
+
+     subgraph Ext["Extension Process (Node.js)"]
+          SDK["@microsoft/cmdpal-sdk"]
+          STDIO["stdio-server.ts\n(JSON-RPC 2.0)"]
+          CODE["Extension code\nindex.ts"]
+
+          SDK --> STDIO
+          CODE --> STDIO
+     end
+
+     RPC -->|"stdin"| STDIO
+     STDIO -->|"stdout"| RPC
+```
+
+### Why Per-Process?
+
+1. **Crash isolation** — A runaway extension cannot crash CmdPal. If an extension process dies, only that extension stops working.
+2. **Resource isolation** — Each extension has independent memory, CPU, and event loop.
+3. **Independent debugging** — Attach a debugger to a specific extension's Node.js process via `--inspect`.
+4. **Clean lifecycle** — Stop/restart an extension by killing and re-spawning its process.
+5. **Security boundary** — Extensions cannot access host memory or other extensions' state.
+
+### Crash Recovery
+
+The host tracks consecutive crashes per extension:
+
+| Crash Count | Behavior |
+|-------------|----------|
+| 1–3 | Extension marked as disconnected, available for restart |
+| > 3 | Extension marked as **unhealthy**, disabled until manual re-enable |
+
+## Extension Discovery
+
+Extensions are discovered from a well-known directory:
+
+```
+%LOCALAPPDATA%\Microsoft\PowerToys\CommandPalette\JSExtensions\
+```
+
+Each subdirectory containing a valid `package.json` with a `cmdpal` section is treated as an extension:
+
+```mermaid
+flowchart TB
+     ROOT["JSExtensions/"] --> MY["my-extension/"]
+     ROOT --> ANOTHER["another-extension/"]
+
+     MY --> PKG["package.json\nmanifest with cmdpal section (required)"]
+     MY --> DIST["dist/"]
+     DIST --> JSENTRY["index.js\ncompiled entry point"]
+     MY --> NM["node_modules/"]
+     NM --> MS["@microsoft/cmdpal-sdk"]
+     MY --> SRC["src/"]
+     SRC --> TSENTRY["index.ts\nTypeScript source"]
+
+     ANOTHER --> APKG["package.json"]
+     ANOTHER --> AETC["..."]
+```
+
+### Directory Watching
+
+The service watches the `JSExtensions` directory for:
+
+| Event | Behavior |
+|-------|----------|
+| **New subdirectory created** | Scans for `package.json` with `cmdpal` section, loads extension if valid |
+| **Subdirectory deleted** | Stops the extension process, removes from provider list |
+| **`*.js` file changed** (within an extension) | Hot-reloads the extension (debounced 500ms) |
+
+Source file watchers ignore `node_modules/` changes.
+
+## Extension Lifecycle
+
+```mermaid
+flowchart TD
+    DISC["Discover\n(find package.json with cmdpal)"] --> PARSE["Parse Manifest\n(validate manifest)"]
+    PARSE --> START["Start Process\n(spawn node process)"]
+    START --> INIT["Initialize\n(JSON-RPC initialize)"]
+    INIT --> READY["Ready\n(host queries commands)"]
+    READY -->|"on shutdown/hot-reload"| STOP["Stop\n(send dispose, kill process)"]
+    READY -->|"on crash or error"| STOP
+```
+
+### Startup Sequence
+
+1. `JsonRpcExtensionService.LoadProvidersAsync()` scans `JSExtensions/`
+2. For each valid `package.json` containing a `cmdpal` section:
+   - Creates `JSExtensionWrapper`
+   - Spawns `node <entrypoint>` with stdio redirection
+   - Creates `JsonRpcConnection` over the process's stdin/stdout
+   - Sends `initialize` request and waits for response
+   - Creates `JSCommandProviderProxy` as the `ICommandProvider` implementation
+   - Wraps in `CommandProviderWrapper` and returns to `TopLevelCommandManager`
+
+### Hot-Reload (Development)
+
+When a `*.js` file changes in an extension directory:
+
+1. Change detected by `FileSystemWatcher`
+2. Debounced 500ms to coalesce rapid saves
+3. Current process receives `dispose` notification
+4. Process is killed after 2s grace period
+5. New process is spawned and initialized
+6. Crash counter is reset on successful initialization
+
+### Debug Mode
+
+Set `"debug": true` in the `cmdpal` section of `package.json` to start the Node.js process with `--inspect`:
+
+```json
+{
+  "cmdpal": {
+    "debug": true,
+    "debugPort": 9230
+  }
+}
+```
+
+The host logs a Chrome DevTools URL for attaching:
+
+```
+chrome-devtools://devtools/bundled/js_app.html?experiments=true&v8only=true&ws=127.0.0.1:9230
+```
+
+If `debugPort` is not specified, ports are auto-assigned starting at 9229.
+
+## Transport Layer
+
+### Framing
+
+All messages use **LSP-style framing** (Language Server Protocol):
+
+```http
+Content-Length: <byte-count>\r\n
+\r\n
+<UTF-8 JSON body>
+```
+
+This is the same framing used by VS Code's Language Server Protocol, making it compatible with existing JSON-RPC tooling.
+
+### Connection Details
+
+| Property | Value |
+|----------|-------|
+| Transport | Process stdio (stdin for writes, stdout for reads) |
+| Encoding | UTF-8 |
+| Framing | `Content-Length` header (LSP-style) |
+| Protocol | JSON-RPC 2.0 |
+| Request timeout | 10 seconds |
+| Concurrency | Serialized writes (lock-protected), async reads |
+| Error channel | stderr (logged by host, not part of protocol) |
+
+### Message Flow
+
+```mermaid
+sequenceDiagram
+          participant Host
+          participant Extension
+
+          Host->>Extension: Content-Length: N {"jsonrpc":"2.0","id":1,...}
+          Extension-->>Host: Content-Length: M {"jsonrpc":"2.0","id":1,...}
+          Extension-->>Host: Content-Length: K {"jsonrpc":"2.0","method":...} (no id)
+```
+
+## C# Host-Side Architecture
+
+### Key Classes
+
+| Class | Role |
+|-------|------|
+| `JsonRpcExtensionService` | Discovers, loads, and manages JS extension processes |
+| `JSExtensionManifest` | Parses and validates `package.json` with `cmdpal` section |
+| `JSExtensionWrapper` | Manages a single Node.js process lifecycle (implements `IExtensionWrapper`) |
+| `JsonRpcConnection` | Low-level JSON-RPC 2.0 transport over stdio |
+| `JSCommandProviderProxy` | Translates `ICommandProvider` interface calls to JSON-RPC requests |
+| `JSCommandAdapter` | Adapts JSON command data to `ICommand` interface |
+| `JSListPageProxy` | Adapts JSON list page data to `IListPage` interface |
+| `JSContentPageProxy` | Adapts JSON content page data to `IContentPage` interface |
+| `JSIconInfoAdapter` | Adapts JSON icon data (glyphs, base64, data URIs) to `IIconInfo` |
+| `JSSeparatorAdapter` | Adapts separator markers to `ISeparatorFilterItem` |
+
+### Adapter Pattern
+
+The host-side uses an **adapter/proxy pattern** to present JSON-RPC responses as native `ICommand`, `IListPage`, `IContentPage`, etc. interfaces. This allows the existing CmdPal UI (built for WinRT extensions) to consume JS extensions without any changes to the UI layer.
+
+```mermaid
+flowchart LR
+    UI["UI Layer (unchanged)"] --> CPP["JSCommandProviderProxy: ICommandProvider"] --> CONN["JsonRpcConnection"] --> NODE["Node.js"]
+
+    LPP["JSListPageProxy: IListPage"]
+    CPPG["JSContentPageProxy: IContentPage"]
+    CAD["JSCommandAdapter: ICommand"]
+    IAD["JSIconInfoAdapter: IIconInfo"]
+
+    CPP --> LPP
+    CPP --> CPPG
+    CPP --> CAD
+    CPP --> IAD
+```
+
+### Icon Data Pipeline
+
+JS extensions can provide icons in three formats:
+
+| Format | `IconData` field | C# handling |
+|--------|------------------|-------------|
+| **Font glyph** | `icon: "\uE91B"` | `IconPathConverter.IconSourceMUX` → `FontIconSource` |
+| **File/URI path** | `icon: "C:\\path\\icon.png"` | `IconPathConverter.IconSourceMUX` → `BitmapImage` |
+| **Base64 data** | `data: "iVBOR..."` | `JSIconDataAdapter.Data` → `InMemoryRandomAccessStream` → `BitmapImage` |
+| **Data URI** | `data: "data:image/png;base64,..."` | `JSIconDataAdapter.Data` → parse data URI → decode → stream |
+
+For base64 images, the TS extension fetches/encodes the image data at runtime. The SDK provides helper functions (`iconFromUrl`, `iconFromFile`, `iconFromBase64`) to simplify this.
+
+## Security Considerations
+
+### Current State (v1)
+
+JS extensions run as **unsandboxed Node.js processes** with the same permissions as the user running CmdPal. This is equivalent to running any Node.js application.
+
+### Mitigations
+
+- **Process isolation** — Extensions cannot access host process memory
+- **No elevated privileges** — Extensions run at the user's permission level, never elevated
+- **Crash containment** — Runaway extensions are auto-disabled after 3 consecutive crashes
+- **No network exposure** — Communication is via stdio, not network sockets
+
+### Future Considerations
+
+- Permission model for filesystem, network, and clipboard access
+- Extension signing and trust verification
+- Sandboxed execution environments (e.g., V8 isolates)

src/modules/cmdpal/doc/json-rpc-spec/02-typescript-sdk.md

@@ -0,0 +1,603 @@
+# 02 - TypeScript SDK Reference
+
+> **Package:** `@microsoft/cmdpal-sdk`
+> **Node.js:** ≥ 22.0.0
+> **TypeScript:** ≥ 5.8
+
+## Installation
+
+```bash
+npm install @microsoft/cmdpal-sdk
+```
+
+---
+
+## Core Types
+
+### Icon Types
+
+```typescript
+interface IconData {
+  icon?: string;          // Font glyph character or file/URI path
+  data?: string | null;   // Base64-encoded image data or data URI
+}
+
+interface IconInfo {
+  light?: IconData;       // Icon for light theme
+  dark?: IconData;        // Icon for dark theme
+}
+```
+
+Icons can be provided as:
+- **Font glyphs:** `{ icon: '\uE91B' }` — Segoe Fluent Icons / MDL2 Assets
+- **File paths:** `{ icon: 'C:\\path\\to\\icon.png' }`
+- **Base64 data:** `{ data: 'iVBORw0KGgo...' }` — raw base64-encoded image bytes
+- **Data URIs:** `{ data: 'data:image/png;base64,iVBOR...' }`
+
+### Color Types
+
+```typescript
+interface Color {
+  r: number;  // 0-255
+  g: number;
+  b: number;
+  a: number;  // 0-255 (default: 255)
+}
+
+interface OptionalColor {
+  hasValue: boolean;
+  color?: Color;
+}
+```
+
+### Tags
+
+```typescript
+interface Tag {
+  icon?: IconInfo | null;
+  text: string;
+  foreground?: OptionalColor | null;
+  background?: OptionalColor | null;
+  toolTip?: string;
+}
+```
+
+### Key Chords
+
+```typescript
+interface KeyChord {
+  modifiers: number;  // Bitmask: Ctrl=1, Alt=2, Shift=4, Win=8
+  vkey: number;       // Virtual key code
+  scanCode: number;
+}
+```
+
+---
+
+## Command Types
+
+### ICommand
+
+The base contract for all commands and pages.
+
+```typescript
+interface ICommand {
+  id: string;               // Unique identifier
+  name: string;             // Display name
+  icon?: IconInfo | null;   // Optional icon
+}
+```
+
+### IInvokableCommand
+
+A command that can be executed.
+
+```typescript
+interface IInvokableCommand extends ICommand {
+  invoke(): Promise<CommandResult> | CommandResult;
+}
+```
+
+### CommandResult
+
+Returned from `invoke()` to tell the host what to do next.
+
+```typescript
+type CommandResultKind =
+  | 'dismiss'    // Close CmdPal
+  | 'goHome'     // Navigate to home
+  | 'goBack'     // Navigate back
+  | 'hide'       // Hide CmdPal (keep state)
+  | 'keepOpen'   // Stay on current page
+  | 'goToPage'   // Navigate to a page
+  | 'showToast'  // Show toast notification
+  | 'confirm';   // Show confirmation dialog
+
+interface CommandResult {
+  kind: CommandResultKind;
+  args?: CommandResultArgs;
+}
+```
+
+### Result Args
+
+```typescript
+interface GoToPageArgs {
+  pageId: string;
+  navigationMode?: 'push' | 'goBack' | 'goHome';
+}
+
+interface ToastArgs {
+  message: string;
+  result?: CommandResult;  // What to do after toast is dismissed
+}
+
+interface ConfirmationArgs {
+  title: string;
+  description: string;
+  primaryCommand?: ICommand;
+  isPrimaryCommandCritical?: boolean;
+}
+```
+
+### Helper: Creating Results
+
+```typescript
+// Navigate to a page
+{ kind: 'goToPage', args: { pageId: 'my-page', navigationMode: 'push' } }
+
+// Show a toast
+{ kind: 'showToast', args: { message: 'Done!' } }
+
+// Confirmation dialog
+{ kind: 'confirm', args: { title: 'Delete?', description: 'This cannot be undone.' } }
+```
+
+---
+
+## Item Types
+
+### ICommandItem
+
+A selectable item shown in lists.
+
+```typescript
+interface ICommandItem {
+  command: ICommand;
+  moreCommands?: ContextItem[];   // Right-click / overflow menu
+  icon?: IconInfo | null;
+  title: string;
+  subtitle?: string;
+}
+```
+
+### IListItem
+
+Extended list item with metadata.
+
+```typescript
+interface IListItem extends ICommandItem {
+  tags?: Tag[];
+  details?: Details;
+  section?: string;          // Section header text (creates visual grouping)
+  textToSuggest?: string;    // Text to fill into search box on selection
+}
+```
+
+### IFallbackCommandItem
+
+A command that receives the user's search query in real-time.
+
+```typescript
+interface IFallbackCommandItem extends ICommandItem {
+  fallbackHandler?: IFallbackHandler;
+  displayTitle?: string;   // Dynamic title that updates as user types
+}
+
+interface IFallbackHandler {
+  updateQuery(query: string): void;
+}
+```
+
+### ContextItem
+
+An action in a right-click or overflow menu.
+
+```typescript
+interface ContextItem {
+  command: ICommand;
+  icon?: IconInfo | null;
+  title: string;
+  subtitle?: string;
+  isCritical?: boolean;           // Show in red/destructive style
+  requestedShortcut?: KeyChord;   // Keyboard shortcut hint
+}
+```
+
+### Separator
+
+A visual divider in lists.
+
+```typescript
+import { Separator } from '@microsoft/cmdpal-sdk';
+
+// Untitled separator (horizontal line)
+new Separator()
+
+// Section header separator
+new Separator('Section Title')
+```
+
+---
+
+## Details Panel
+
+Rich metadata shown alongside a selected list item.
+
+```typescript
+interface Details {
+  heroImage?: IconInfo | null;
+  title?: string;
+  body?: string;              // Markdown-formatted body text
+  metadata?: DetailsElement[];
+}
+
+interface DetailsElement {
+  key: string;                // Label shown to the left
+  data: DetailsData;          // Value shown to the right
+}
+
+// Discriminated union of detail data types
+type DetailsData =
+  | DetailsTags        // { type: 'tags', tags: Tag[] }
+  | DetailsLink        // { type: 'link', link: string, text: string }
+  | DetailsCommands    // { type: 'commands', commands: ICommand[] }
+  | DetailsSeparator;  // { type: 'separator' }
+```
+
+---
+
+## Page Types
+
+### IListPage
+
+A page that shows a scrollable list of items.
+
+```typescript
+interface IListPage extends IPage {
+  searchText?: string;
+  placeholderText?: string;
+  showDetails?: boolean;           // Show details panel
+  filters?: Filters | null;       // Filter bar
+  gridProperties?: GridProperties | null;  // Grid/gallery layout
+  hasMoreItems?: boolean;          // Infinite scroll
+  emptyContent?: ICommandItem | null;
+  getItems(): IListItem[] | Promise<IListItem[]>;
+  loadMore?(): void | Promise<void>;
+}
+```
+
+### IDynamicListPage
+
+A list page that receives search input in real-time.
+
+```typescript
+interface IDynamicListPage extends IListPage {
+  setSearchText(text: string): void;
+}
+```
+
+### IContentPage
+
+A page that displays rich content (markdown, forms, images, trees).
+
+```typescript
+interface IContentPage extends IPage {
+  getContent(): Content[] | Promise<Content[]>;
+  details?: Details | null;
+  commands?: ContextItem[];
+}
+```
+
+### Filters
+
+```typescript
+interface Filter {
+  id: string;
+  name: string;
+  icon?: IconInfo | null;
+}
+
+interface Filters {
+  currentFilterId: string;
+  filters: Array<Filter | { separator: true }>;
+}
+```
+
+### Grid Properties
+
+```typescript
+type GridLayoutType = 'small' | 'medium' | 'gallery';
+
+interface GridProperties {
+  type: GridLayoutType;
+  showTitle?: boolean;
+  showSubtitle?: boolean;
+}
+```
+
+---
+
+## Content Types
+
+Content pages display an array of `Content` items:
+
+```typescript
+type ContentType = 'markdown' | 'form' | 'tree' | 'plainText' | 'image';
+
+interface MarkdownContent {
+  type: 'markdown';
+  body: string;
+}
+
+interface FormContent {
+  type: 'form';
+  templateJson: string;   // Adaptive Card JSON template
+  dataJson: string;        // Form data values JSON
+  stateJson?: string;
+  submitForm(inputs: string, data: string): CommandResult | Promise<CommandResult>;
+}
+
+interface ImageContent {
+  type: 'image';
+  image: IconInfo;        // Base64-encoded image data (use iconFromUrl/iconFromFile)
+  maxWidth?: number;
+  maxHeight?: number;
+}
+
+interface PlainTextContent {
+  type: 'plainText';
+  text: string;
+  fontFamily?: 'userInterface' | 'monospace';
+  wrapWords?: boolean;
+}
+
+interface TreeContent {
+  type: 'tree';
+  rootContent: Content;
+  getChildren(): Content[] | Promise<Content[]>;
+}
+```
+
+---
+
+## Settings
+
+```typescript
+import { Settings, ToggleSetting, TextSetting, ChoiceSetSetting } from '@microsoft/cmdpal-sdk';
+
+const settings = new Settings();
+
+// Toggle (boolean)
+settings.add(new ToggleSetting('darkMode', 'Dark Mode', true, 'Enable dark theme'));
+
+// Text input
+settings.add(new TextSetting('apiKey', 'API Key', '', 'Your API key'));
+
+// Choice set (dropdown)
+settings.add(new ChoiceSetSetting('language', 'Language', [
+  { title: 'English', value: 'en' },
+  { title: 'Spanish', value: 'es' },
+], 'en'));
+
+// Read values
+const darkMode = settings.getSetting<ToggleSetting>('darkMode')?.value;
+
+// Expose in provider
+class MyProvider extends CommandProviderBase {
+  settings = settings;
+  // ... settings page auto-generated from settings definitions
+}
+```
+
+---
+
+## Base Classes
+
+### CommandProviderBase
+
+The entry point for every extension.
+
+```typescript
+class MyProvider extends CommandProviderBase implements ICommandProvider {
+  readonly id = 'my-extension';
+  readonly displayName = 'My Extension';
+  readonly icon = iconFromGlyph('\uE8A5');
+
+  topLevelCommands(): ICommandItem[] {
+    return [ /* ... */ ];
+  }
+
+  // Optional
+  fallbackCommands?(): IFallbackCommandItem[];
+  getCommand?(id: string): ICommand | null;
+  settings?: ICommandSettings;
+  initializeWithHost?(host: IExtensionHost): void;
+  dispose?(): void;
+}
+```
+
+### ListPageBase
+
+```typescript
+class MyListPage extends ListPageBase implements IListPage {
+  readonly id = 'my-list';
+  readonly name = 'My List';
+  readonly title = 'My List Page';
+
+  getItems(): IListItem[] {
+    return [ /* ... */ ];
+  }
+
+  // Optional
+  showDetails?: boolean;
+  filters?: Filters;
+  gridProperties?: GridProperties;
+  placeholderText?: string;
+}
+```
+
+### DynamicListPageBase
+
+```typescript
+class MySearchPage extends DynamicListPageBase implements IDynamicListPage {
+  readonly id = 'my-search';
+  readonly name = 'Search';
+  readonly title = 'Search Page';
+  private query = '';
+
+  setSearchText(text: string): void {
+    this.query = text;
+    this.notifyItemsChanged();  // Tell host to re-fetch items
+  }
+
+  getItems(): IListItem[] {
+    return allItems.filter(item => item.title.includes(this.query));
+  }
+}
+```
+
+### ContentPageBase
+
+```typescript
+class MyContentPage extends ContentPageBase implements IContentPage {
+  readonly id = 'my-content';
+  readonly name = 'Content';
+  readonly title = 'My Content Page';
+
+  getContent(): Content[] {
+    return [
+      { type: 'markdown', body: '# Hello\n\nThis is **markdown** content.' },
+    ];
+  }
+}
+```
+
+### InvokableCommandBase
+
+```typescript
+class MyCommand extends InvokableCommandBase implements IInvokableCommand {
+  readonly id = 'my-command';
+  readonly name = 'Do Something';
+
+  invoke(): CommandResult {
+    // Do work...
+    return { kind: 'showToast', args: { message: 'Done!' } };
+  }
+}
+```
+
+---
+
+## Built-In Commands
+
+| Class | Purpose | `invoke()` returns |
+|-------|---------|-------------------|
+| `NoOpCommand` | Does nothing | `{ kind: 'keepOpen' }` |
+| `OpenUrlCommand` | Opens a URL in the default browser | `{ kind: 'dismiss' }` |
+| `CopyTextCommand` | Copies text to clipboard | Toast with copy confirmation |
+| `ConfirmableCommand` | Shows a confirmation dialog | `{ kind: 'confirm', args: {...} }` |
+
+---
+
+## Icon Helpers
+
+```typescript
+import { iconFromGlyph, iconFromBase64, iconFromUrl, iconFromFile } from '@microsoft/cmdpal-sdk';
+
+// Font glyph (Segoe Fluent Icons)
+const icon = iconFromGlyph('\uE91B');
+
+// Base64-encoded image data
+const icon = iconFromBase64('iVBORw0KGgoAAAANSUhEUg...');
+
+// Fetch image from URL (async — downloads and encodes as base64)
+const icon = await iconFromUrl('https://example.com/icon.png');
+
+// Read local file (async — reads and encodes as base64)
+const icon = await iconFromFile('./assets/icon.png');
+```
+
+---
+
+## Runtime API
+
+### ExtensionHost
+
+Static bridge for communicating with the CmdPal host.
+
+```typescript
+import { ExtensionHost } from '@microsoft/cmdpal-sdk';
+
+// Logging
+ExtensionHost.log('Something happened');
+ExtensionHost.log('Error occurred', 'error');
+
+// Status bar
+ExtensionHost.showStatus('Loading...', 'info', { isIndeterminate: true });
+ExtensionHost.hideStatus('loading-id');
+
+// Clipboard
+ExtensionHost.copyToClipboard('Hello, clipboard!');
+```
+
+### Activation
+
+```typescript
+import { activate, startJsonRpcServer } from '@microsoft/cmdpal-sdk';
+
+// Standard activation pattern
+startJsonRpcServer(() => {
+  return new MyProvider();
+});
+```
+
+### Notifications
+
+```typescript
+import { sendNotification } from '@microsoft/cmdpal-sdk';
+
+// Tell the host that a list page's items have changed
+sendNotification('listPage/itemsChanged', { pageId: 'my-list' });
+
+// Tell the host that a command's properties changed
+sendNotification('command/propChanged', {
+  commandId: 'my-fallback',
+  properties: { displayTitle: 'Search: query text' },
+});
+```
+
+---
+
+## C# Toolkit Equivalence
+
+| C# Toolkit | TypeScript SDK |
+|------------|----------------|
+| `ListPage` | `ListPageBase` |
+| `DynamicListPage` | `DynamicListPageBase` |
+| `ContentPage` | `ContentPageBase` |
+| `InvokableCommand` | `InvokableCommandBase` |
+| `CommandItem` | `CommandItemBase` |
+| `ListItem` | `ListItemBase` |
+| `FallbackCommandItem` | `FallbackCommandItemBase` |
+| `Separator` | `Separator` |
+| `NoOpCommand` | `NoOpCommand` |
+| `OpenUrlCommand` | `OpenUrlCommand` |
+| `CopyTextCommand` | `CopyTextCommand` |
+| `ConfirmableCommand` | `ConfirmableCommand` |
+| `Settings`/`SettingsPage` | `Settings` (auto-generates `IContentPage`) |
+| `ToggleSetting` | `ToggleSetting` |
+| `TextSetting` | `TextSetting` |
+| `ChoiceSetSetting` | `ChoiceSetSetting` |
+| `IconHelpers.FromRelativePath` | `iconFromFile` |
+| `IconInfo.FromStream` | `iconFromBase64` / `iconFromUrl` |

src/modules/cmdpal/doc/json-rpc-spec/03-jsonrpc-protocol.md

@@ -0,0 +1,509 @@
+# 03 - JSON-RPC Protocol Specification
+
+## Overview
+
+Communication between the CmdPal host and JavaScript extensions uses **JSON-RPC 2.0** over **stdio** with **LSP-style `Content-Length` framing**.
+
+### Framing Format
+
+Every message (request, response, and notification) is preceded by a header:
+
+```http
+Content-Length: <byte-count>\r\n
+\r\n
+<UTF-8 JSON body>
+```
+
+Where `<byte-count>` is the byte length (not character length) of the JSON body.
+
+### Connection Properties
+
+| Property | Value |
+|----------|-------|
+| Transport | stdin (host→extension), stdout (extension→host) |
+| Encoding | UTF-8 |
+| Protocol | JSON-RPC 2.0 |
+| Request timeout | 10 seconds |
+| Concurrency | Requests are serialized (one at a time); notifications can interleave |
+
+### Message Types
+
+| Type | Has `id` | Has `method` | Direction |
+|------|----------|-------------|-----------|
+| Request | ✅ | ✅ | Host → Extension |
+| Response | ✅ | ❌ | Extension → Host |
+| Notification | ❌ | ✅ | Either direction |
+
+---
+
+## Host → Extension Requests
+
+### `initialize`
+
+Called once after the Node.js process starts. The extension should initialize its provider and return capabilities.
+
+**Parameters:**
+```json
+{
+  "extensionId": "my-extension"
+}
+```
+
+**Response:**
+```json
+{
+  "capabilities": ["commands"]
+}
+```
+
+---
+
+### `provider/getTopLevelCommands`
+
+Fetches the extension's top-level command items (shown in the main CmdPal list).
+
+**Parameters:** `null`
+
+**Response:** Array of command items:
+```json
+[
+  {
+    "id": "cmd-1",
+    "title": "My Command",
+    "displayName": "My Command",
+    "subtitle": "Does something useful",
+    "command": {
+      "id": "cmd-1",
+      "name": "My Command",
+      "icon": { "light": { "icon": "\uE8A5" } },
+      "pageType": "dynamicListPage"
+    },
+    "icon": { "light": { "icon": "\uE8A5" } },
+    "moreCommands": []
+  }
+]
+```
+
+The `command` object includes a `pageType` field when the command represents a page:
+- `"listPage"` — static list page
+- `"dynamicListPage"` — search-enabled list page
+- `"contentPage"` — rich content page
+- Absent — invokable command (no page)
+
+---
+
+### `provider/getFallbackCommands`
+
+Fetches commands that receive the user's search query when no other results match.
+
+**Parameters:** `null`
+
+**Response:** Array of fallback command items, or `null`:
+```json
+[
+  {
+    "id": "search-web",
+    "title": "Search the web",
+    "displayName": "Search the web",
+    "command": { "id": "search-web", "name": "Search the web" }
+  }
+]
+```
+
+---
+
+### `provider/getCommand`
+
+Fetches a specific command/page by ID. Used when navigating to a page.
+
+**Parameters:**
+```json
+{
+  "commandId": "my-page-id"
+}
+```
+
+**Response:** Command object or `null`:
+```json
+{
+  "id": "my-page-id",
+  "name": "My Page",
+  "pageType": "listPage",
+  "icon": { "light": { "icon": "\uE8A5" } }
+}
+```
+
+---
+
+### `provider/getSettings`
+
+Fetches the extension's settings page ID.
+
+**Parameters:** `null`
+
+**Response:**
+```json
+{
+  "id": "settings-page-id"
+}
+```
+
+Or `null` if the extension has no settings.
+
+---
+
+### `command/invoke`
+
+Invokes a command by ID.
+
+**Parameters:**
+```json
+{
+  "commandId": "my-command-id"
+}
+```
+
+**Response:** Command result:
+```json
+{
+  "Kind": 6,
+  "Args": {
+    "Message": "Operation complete!"
+  }
+}
+```
+
+`Kind` values:
+| Value | Name | Description |
+|-------|------|-------------|
+| 0 | Dismiss | Close CmdPal |
+| 1 | GoHome | Navigate to home |
+| 2 | GoBack | Navigate back |
+| 3 | Hide | Hide CmdPal (keep state) |
+| 4 | KeepOpen | Stay on current page |
+| 5 | GoToPage | Navigate to page (requires `PageId` in args) |
+| 6 | ShowToast | Show toast notification (requires `Message` in args) |
+| 7 | Confirm | Show confirmation dialog |
+
+---
+
+### `listPage/getItems`
+
+Fetches items for a list page.
+
+**Parameters:**
+```json
+{
+  "pageId": "my-list-page"
+}
+```
+
+**Response:**
+```json
+{
+  "items": [
+    {
+      "id": "item-1",
+      "title": "Item One",
+      "subtitle": "Description",
+      "section": "Group A",
+      "command": { "id": "item-1-cmd", "name": "Item One" },
+      "icon": { "light": { "icon": "\uE8A5" } },
+      "tags": [{ "text": "New", "foreground": { "hasValue": true, "color": { "r": 255, "g": 255, "b": 255, "a": 255 } } }],
+      "details": {
+        "title": "Item One Details",
+        "body": "**Rich** markdown description",
+        "metadata": [
+          { "key": "Author", "data": { "type": "tags", "tags": [{ "text": "mjolley" }] } },
+          { "key": "Link", "data": { "type": "link", "link": "https://github.com", "text": "GitHub" } }
+        ]
+      },
+      "moreCommands": [
+        {
+          "command": { "id": "copy-cmd", "name": "Copy" },
+          "title": "Copy to clipboard",
+          "icon": { "light": { "icon": "\uE8C8" } }
+        }
+      ]
+    }
+  ]
+}
+```
+
+Items with `_isSeparator: true` are rendered as visual separators:
+```json
+{
+  "title": "Section Header",
+  "section": "Section Header",
+  "_isSeparator": true,
+  "command": null
+}
+```
+
+---
+
+### `listPage/setSearchText`
+
+Updates the search text for a dynamic list page.
+
+**Parameters:**
+```json
+{
+  "pageId": "my-dynamic-page",
+  "searchText": "user query"
+}
+```
+
+**Response:** `null`
+
+The extension should update its internal state and send a `listPage/itemsChanged` notification when items are ready.
+
+---
+
+### `listPage/setFilter`
+
+Updates the active filter for a list page.
+
+**Parameters:**
+```json
+{
+  "pageId": "my-filtered-page",
+  "filterId": "recent"
+}
+```
+
+**Response:** `null`
+
+---
+
+### `listPage/loadMore`
+
+Requests additional items for infinite scroll.
+
+**Parameters:**
+```json
+{
+  "pageId": "my-page"
+}
+```
+
+**Response:** `null`
+
+The extension should append items and send a `listPage/itemsChanged` notification.
+
+---
+
+### `fallback/updateQuery`
+
+Updates the search query for a fallback command.
+
+**Parameters:**
+```json
+{
+  "commandId": "search-fallback",
+  "query": "user typed text"
+}
+```
+
+**Response:** `null`
+
+The extension should update its internal state and send a `command/propChanged` notification to update the display title.
+
+---
+
+### `contentPage/getContent`
+
+Fetches content for a content page.
+
+**Parameters:**
+```json
+{
+  "pageId": "my-content-page"
+}
+```
+
+**Response:** Array of content items:
+```json
+[
+  {
+    "type": "markdown",
+    "body": "# Hello\n\nMarkdown content"
+  },
+  {
+    "type": "image",
+    "image": { "light": { "data": "iVBORw0KGgo..." } },
+    "maxWidth": 600,
+    "maxHeight": 400
+  },
+  {
+    "type": "form",
+    "templateJson": "{...adaptive card JSON...}",
+    "dataJson": "{...data values...}"
+  }
+]
+```
+
+---
+
+### `form/submit`
+
+Submits form data from a content page or form content.
+
+**Parameters:**
+```json
+{
+  "pageId": "my-form-page",
+  "inputs": "{\"name\":\"John\"}",
+  "data": "{}"
+}
+```
+
+**Response:** Command result (same format as `command/invoke`).
+
+---
+
+### `dispose`
+
+Notification sent before the host kills the extension process.
+
+**Parameters:** `null`
+
+**Note:** This is a notification (no `id`), not a request. The extension should clean up resources.
+
+---
+
+## Extension → Host Notifications
+
+### `listPage/itemsChanged`
+
+Tells the host to re-fetch items for a list page.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "method": "listPage/itemsChanged",
+  "params": {
+    "pageId": "my-list-page"
+  }
+}
+```
+
+---
+
+### `command/propChanged`
+
+Tells the host that a command's properties have changed (e.g., fallback display title).
+
+```json
+{
+  "jsonrpc": "2.0",
+  "method": "command/propChanged",
+  "params": {
+    "commandId": "my-fallback",
+    "properties": {
+      "displayTitle": "Search: new query"
+    }
+  }
+}
+```
+
+---
+
+### `host/logMessage`
+
+Sends a log message to the host's logging system.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "method": "host/logMessage",
+  "params": {
+    "message": "Extension initialized successfully",
+    "state": 0
+  }
+}
+```
+
+State values: 0 = Info, 1 = Success, 2 = Warning, 3 = Error
+
+---
+
+### `host/showStatus`
+
+Shows a status message in the CmdPal status bar.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "method": "host/showStatus",
+  "params": {
+    "message": {
+      "Message": "Loading data...",
+      "State": 0
+    },
+    "context": "extension"
+  }
+}
+```
+
+---
+
+### `host/hideStatus`
+
+Hides a previously shown status message.
+
+```json
+{
+  "jsonrpc": "2.0",
+  "method": "host/hideStatus",
+  "params": {
+    "message": {
+      "Message": "Loading data...",
+      "State": 0
+    }
+  }
+}
+```
+
+---
+
+### `host/copyText`
+
+Copies text to the system clipboard (since Node.js doesn't have clipboard access).
+
+```json
+{
+  "jsonrpc": "2.0",
+  "method": "host/copyText",
+  "params": {
+    "text": "Text to copy to clipboard"
+  }
+}
+```
+
+---
+
+## Protocol Summary Table
+
+| Method | Direction | Type | Purpose |
+|--------|-----------|------|---------|
+| `initialize` | Host → Ext | Request | Initialize extension |
+| `provider/getTopLevelCommands` | Host → Ext | Request | Get top-level commands |
+| `provider/getFallbackCommands` | Host → Ext | Request | Get fallback commands |
+| `provider/getCommand` | Host → Ext | Request | Get command by ID |
+| `provider/getSettings` | Host → Ext | Request | Get settings page |
+| `command/invoke` | Host → Ext | Request | Invoke a command |
+| `listPage/getItems` | Host → Ext | Request | Get list page items |
+| `listPage/setSearchText` | Host → Ext | Request | Update search query |
+| `listPage/setFilter` | Host → Ext | Request | Update active filter |
+| `listPage/loadMore` | Host → Ext | Request | Load more items |
+| `fallback/updateQuery` | Host → Ext | Request | Update fallback query |
+| `contentPage/getContent` | Host → Ext | Request | Get content page content |
+| `form/submit` | Host → Ext | Request | Submit form data |
+| `dispose` | Host → Ext | Notification | Clean up before exit |
+| `listPage/itemsChanged` | Ext → Host | Notification | Items have changed |
+| `command/propChanged` | Ext → Host | Notification | Command props changed |
+| `host/logMessage` | Ext → Host | Notification | Log message |
+| `host/showStatus` | Ext → Host | Notification | Show status bar message |
+| `host/hideStatus` | Ext → Host | Notification | Hide status bar message |
+| `host/copyText` | Ext → Host | Notification | Copy text to clipboard |

src/modules/cmdpal/doc/json-rpc-spec/04-manifest-packaging.md

@@ -0,0 +1,326 @@
+# 04 - Manifest, Packaging, and Installation
+
+## Extension Project Structure
+
+A CmdPal JavaScript extension is a standard Node.js project. Extension metadata is declared in the `cmdpal` field of `package.json` (similar to how VS Code uses `contributes`):
+
+```
+my-extension/
+├── package.json         # Node.js manifest + "cmdpal" section (required)
+├── dist/
+│   └── index.js         # Compiled entry point
+├── src/
+│   └── index.ts         # TypeScript source
+├── tsconfig.json        # TypeScript config
+├── node_modules/        # Dependencies (ideally bundled)
+└── icon.png             # Extension icon (optional)
+```
+
+The key files:
+- **`package.json`** — Standard Node.js package manifest with an added `cmdpal` section for CmdPal-specific metadata
+- **`dist/index.js`** — The compiled JavaScript entry point that CmdPal will execute
+
+---
+
+## `package.json` Schema
+
+CmdPal discovers extensions by finding directories with a `package.json` that contains a `cmdpal` object. Top-level npm fields provide identity; the `cmdpal` section provides CmdPal-specific metadata.
+
+### Full Example
+
+```json
+{
+  "name": "@microsoft/cmdpal-my-extension",
+  "version": "1.0.0",
+  "description": "A brief description of the extension",
+  "main": "dist/index.js",
+  "engines": {
+    "node": ">=18"
+  },
+  "cmdpal": {
+    "displayName": "My Extension",
+    "icon": "icon.png",
+    "publisher": "your-name",
+    "capabilities": ["commands"],
+    "debug": false,
+    "debugPort": 9230
+  },
+  "scripts": {
+    "build": "tsc",
+    "dev": "tsc --watch"
+  },
+  "dependencies": {
+    "@microsoft/cmdpal-sdk": "^1.0.0"
+  },
+  "devDependencies": {
+    "typescript": "^5.0.0"
+  },
+  "keywords": ["cmdpal", "powertoys", "command-palette"]
+}
+```
+
+### Field Reference
+
+#### Top-level fields (standard npm)
+
+| Field | Type | Required | Description |
+|-------|------|----------|-------------|
+| `name` | `string` | ✅ | Package identifier. Must be unique across installed extensions. Used as the extension ID. |
+| `version` | `string` | ❌ | Semantic version string (e.g., `"1.0.0"`). |
+| `description` | `string` | ❌ | Brief description shown in the extension gallery and settings. |
+| `main` | `string` | ✅ | Relative path to the entry point JavaScript file. This is what `node` executes. |
+| `engines.node` | `string` | ❌ | Node.js version requirement (e.g., `">=18"`). |
+
+#### `cmdpal` section fields
+
+| Field | Type | Required | Description |
+|-------|------|----------|-------------|
+| `displayName` | `string` | ❌ | Human-readable name shown in CmdPal UI. Falls back to `name` if not provided. |
+| `icon` | `string` | ❌ | Icon glyph character (e.g., `"\uE943"`) or relative path to an icon file (PNG recommended). |
+| `publisher` | `string` | ❌ | Author or publisher name. |
+| `capabilities` | `string[]` | ❌ | List of capabilities the extension provides (e.g., `["commands"]`). |
+| `debug` | `boolean` | ❌ | When `true`, starts Node.js with `--inspect` for debugger attachment. Default: `false`. |
+| `debugPort` | `integer` | ❌ | Inspector port when `debug` is `true`. If not specified, auto-assigned starting at 9229. |
+| `main` | `string` | ❌ | Optional override of the top-level `main` field (for packages where the CmdPal entry point differs from the npm main). |
+
+### Validation Rules
+
+A `package.json` is recognized as a CmdPal extension if:
+1. It contains a `cmdpal` object (even if empty: `"cmdpal": {}`)
+2. `name` is present and non-empty
+3. Either `cmdpal.main` or top-level `main` resolves to an existing file
+
+---
+
+## Installation Directory
+
+Extensions are installed to:
+
+```
+%LOCALAPPDATA%\Microsoft\PowerToys\CommandPalette\JSExtensions\
+```
+
+Each extension occupies its own subdirectory:
+
+```
+JSExtensions/
+├── my-extension/
+│   ├── package.json       ← contains "cmdpal" section
+│   ├── dist/
+│   │   └── index.js
+│   └── node_modules/
+├── another-extension/
+│   ├── package.json
+│   └── ...
+```
+
+### Discovery
+
+The `JsonRpcExtensionService` watches this directory with a `FileSystemWatcher`:
+- **New directory with valid `package.json`** → extension is loaded automatically
+- **Directory removed** → extension is unloaded, Node.js process is terminated
+- **`*.js` file changed** within an extension → hot-reload (500ms debounce)
+
+This means:
+- Installing an extension = copying its directory to `JSExtensions/`
+- Uninstalling = deleting the directory
+- Updating = replacing files (hot-reload handles `*.js` changes)
+
+---
+
+## Development Setup
+
+### Creating a New Extension
+
+1. **Create the project directory:**
+   ```bash
+   mkdir my-extension && cd my-extension
+   npm init -y
+   ```
+
+2. **Install the SDK:**
+   ```bash
+   npm install @microsoft/cmdpal-sdk
+   ```
+
+3. **Add the `cmdpal` section to `package.json`:**
+   ```json
+   {
+     "name": "my-extension",
+     "version": "1.0.0",
+     "description": "My awesome CmdPal extension",
+     "main": "dist/index.js",
+     "cmdpal": {
+       "displayName": "My Extension",
+       "debug": true
+     },
+     "dependencies": {
+       "@microsoft/cmdpal-sdk": "^1.0.0"
+     }
+   }
+   ```
+
+4. **Create `tsconfig.json`:**
+   ```json
+   {
+     "compilerOptions": {
+       "target": "ES2022",
+       "module": "commonjs",
+       "outDir": "./dist",
+       "rootDir": "./src",
+       "strict": true,
+       "esModuleInterop": true,
+       "skipLibCheck": true,
+       "moduleResolution": "node"
+     },
+     "include": ["src/**/*"]
+   }
+   ```
+
+5. **Write your extension** in `src/index.ts` (see [05-getting-started.md](./05-getting-started.md))
+
+6. **Build:**
+   ```bash
+   npx tsc
+   ```
+
+### Development Installation
+
+For development, symlink or copy your extension to the JSExtensions directory:
+
+```powershell
+# Option 1: Copy
+Copy-Item -Recurse ./my-extension "$env:LOCALAPPDATA\Microsoft\PowerToys\CommandPalette\JSExtensions\my-extension"
+
+# Option 2: Junction link (recommended for development)
+New-Item -ItemType Junction -Path "$env:LOCALAPPDATA\Microsoft\PowerToys\CommandPalette\JSExtensions\my-extension" -Target (Resolve-Path ./my-extension)
+```
+
+With a junction link, changes to your source files are reflected immediately (after build). The `*.js` file watcher triggers hot-reload automatically.
+
+### Debugging
+
+1. Set `"debug": true` in the `cmdpal` section of `package.json`
+2. Optionally set `"debugPort": 9230` (or any available port)
+3. Open Chrome DevTools: `chrome://inspect` or attach VS Code's debugger
+4. The Node.js process starts with `--inspect=0.0.0.0:<port>`, ready for debugger attachment
+
+---
+
+## Production Packaging
+
+### npm Package Structure
+
+Extensions are distributed as standard npm packages. The recommended `package.json`:
+
+```json
+{
+  "name": "@publisher/cmdpal-my-extension",
+  "version": "1.0.0",
+  "description": "My CmdPal extension",
+  "main": "dist/index.js",
+  "cmdpal": {
+    "displayName": "My Extension",
+    "icon": "icon.png",
+    "publisher": "your-name",
+    "capabilities": ["commands"]
+  },
+  "scripts": {
+    "build": "tsc",
+    "prepublishOnly": "npm run build"
+  },
+  "files": [
+    "dist/",
+    "icon.png"
+  ],
+  "dependencies": {
+    "@microsoft/cmdpal-sdk": "^1.0.0"
+  },
+  "devDependencies": {
+    "typescript": "^5.0.0"
+  },
+  "keywords": ["cmdpal", "powertoys", "command-palette"],
+  "engines": {
+    "node": ">=18"
+  }
+}
+```
+
+### Naming Convention
+
+Recommended npm package naming: `@publisher/cmdpal-<name>` or `cmdpal-<name>`.
+
+The `cmdpal-` prefix helps with discoverability and could be used for future npm-based discovery.
+
+---
+
+## Extension Gallery Integration
+
+
+### Gallery Manifest Entry
+
+The existing CmdPal extension gallery pulls from a manifest that lists available extensions. For JavaScript extensions, the manifest entry includes npm package details:
+
+```json
+{
+  "name": "my-extension",
+  "displayName": "My Extension",
+  "description": "Does amazing things",
+  "publisher": "your-name",
+  "version": "1.0.0",
+  "icon": "https://example.com/icon.png",
+  "type": "jsonrpc",
+  "npm": {
+    "package": "@publisher/cmdpal-my-extension",
+    "registry": "https://registry.npmjs.org"
+  }
+}
+```
+
+The `type: "jsonrpc"` field distinguishes JavaScript extensions from COM-based extensions.
+
+### Installation Flow
+
+When a user clicks "Install" for a JavaScript extension in the gallery:
+
+1. CmdPal runs `npm install <package>` in the JSExtensions directory
+2. The package is installed to `JSExtensions/<name>/`
+3. `FileSystemWatcher` detects the new directory → extension loads automatically
+4. The extension appears in the main CmdPal list
+
+### Uninstallation Flow
+
+When a user clicks "Uninstall":
+
+1. CmdPal terminates the extension's Node.js process
+2. The extension directory is deleted from `JSExtensions/`
+3. `FileSystemWatcher` detects the removal → extension is unloaded
+
+---
+
+## Security Considerations
+
+### Process Isolation
+
+Each JavaScript extension runs in its own Node.js process:
+- Separate memory space
+- Separate event loop
+- No direct access to other extensions or CmdPal internals
+- Communication only through the JSON-RPC protocol
+
+### Permissions
+
+Currently, JavaScript extensions have the same permissions as the Node.js process:
+- File system access
+- Network access
+- Process spawning
+
+Future considerations:
+- Extension permission declarations in `package.json` `cmdpal` section
+- User consent prompts for sensitive permissions
+- Sandboxing via Node.js `--experimental-policy` or similar mechanisms
+
+### Trust Model
+
+- Extensions installed from the gallery are implicitly trusted by the user
+- Sideloaded extensions (copied to JSExtensions/) have no verification

src/modules/cmdpal/doc/json-rpc-spec/05-getting-started.md

@@ -0,0 +1,484 @@
+# 05 — Getting Started: Build Your First CmdPal Extension
+
+This guide walks you through building a CmdPal JavaScript extension from scratch. By the end, you'll have a working extension with a searchable list page, a content page, and settings.
+
+---
+
+## Prerequisites
+
+- **Node.js 18+** installed and on your PATH
+- **PowerToys** with Command Palette enabled
+- A text editor (VS Code recommended)
+
+---
+
+## Step 1: Scaffold the Project
+
+```bash
+mkdir my-first-extension && cd my-first-extension
+npm init -y
+npm install @microsoft/cmdpal-sdk
+npm install --save-dev typescript
+```
+
+Create `tsconfig.json`:
+
+```json
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "commonjs",
+    "outDir": "./dist",
+    "rootDir": "./src",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "moduleResolution": "node"
+  },
+  "include": ["src/**/*"]
+}
+```
+
+Add the `cmdpal` section to your `package.json`:
+
+```json
+{
+  "name": "my-first-extension",
+  "version": "1.0.0",
+  "description": "A tutorial CmdPal extension",
+  "main": "dist/index.js",
+  "cmdpal": {
+    "displayName": "My First Extension",
+    "debug": true
+  },
+  "dependencies": {
+    "@microsoft/cmdpal-sdk": "^1.0.0"
+  },
+  "devDependencies": {
+    "typescript": "^5.0.0"
+  }
+}
+```
+
+---
+
+## Step 2: Create a Simple Command
+
+Create `src/index.ts`:
+
+```typescript
+import {
+  CommandProvider,
+  Command,
+  ListPage,
+  ListItem,
+  CommandResultKind,
+  run,
+  iconFromGlyph,
+} from "@microsoft/cmdpal-sdk";
+
+// Define a simple command that shows a toast
+class GreetCommand extends Command {
+  constructor() {
+    super({
+      id: "greet",
+      name: "Say Hello",
+      icon: iconFromGlyph("\uE76E"), // Checkmark icon
+    });
+  }
+
+  async invoke(): Promise<{ kind: CommandResultKind }> {
+    return {
+      kind: CommandResultKind.ShowToast,
+      args: { Message: "Hello from my extension!" },
+    };
+  }
+}
+
+// Define the main list page
+class MainPage extends ListPage {
+  constructor() {
+    super({
+      id: "main-page",
+      name: "My First Extension",
+      icon: iconFromGlyph("\uE8A5"),
+    });
+  }
+
+  async getItems(): Promise<ListItem[]> {
+    return [
+      new ListItem({
+        title: "Say Hello",
+        subtitle: "Shows a greeting toast",
+        command: new GreetCommand(),
+        icon: iconFromGlyph("\uE76E"),
+      }),
+    ];
+  }
+}
+
+// Define the provider
+class MyProvider extends CommandProvider {
+  constructor() {
+    super("my-first-extension", "My First Extension");
+  }
+
+  getTopLevelCommands() {
+    return [
+      new ListItem({
+        title: "My First Extension",
+        subtitle: "A tutorial extension",
+        command: new MainPage(),
+        icon: iconFromGlyph("\uE8A5"),
+      }),
+    ];
+  }
+}
+
+// Start the extension
+run(new MyProvider());
+```
+
+---
+
+## Step 3: Build and Install
+
+```bash
+# Build
+npx tsc
+
+# Install (junction link for development)
+$extensionsDir = "$env:LOCALAPPDATA\Microsoft\PowerToys\CommandPalette\JSExtensions"
+New-Item -ItemType Junction -Path "$extensionsDir\my-first-extension" -Target (Resolve-Path .)
+```
+
+Open CmdPal — you should see "My First Extension" in the list. Click it to see your command, then click "Say Hello" to see the toast!
+
+---
+
+## Step 4: Add a Dynamic List Page (Search)
+
+Let's add a searchable list that filters items as you type:
+
+```typescript
+import {
+  DynamicListPage,
+  // ... other imports
+} from "@microsoft/cmdpal-sdk";
+
+class SearchablePage extends DynamicListPage {
+  private allItems = [
+    { title: "Apple", emoji: "🍎" },
+    { title: "Banana", emoji: "🍌" },
+    { title: "Cherry", emoji: "🍒" },
+    { title: "Dragon Fruit", emoji: "🐉" },
+    { title: "Elderberry", emoji: "🫐" },
+  ];
+
+  constructor() {
+    super({
+      id: "searchable-page",
+      name: "Fruit Search",
+      icon: iconFromGlyph("\uE721"), // Search icon
+      placeholderText: "Search fruits...",
+    });
+  }
+
+  async getItems(): Promise<ListItem[]> {
+    const query = this.searchText?.toLowerCase() ?? "";
+    return this.allItems
+      .filter((item) => item.title.toLowerCase().includes(query))
+      .map(
+        (item) =>
+          new ListItem({
+            title: `${item.emoji} ${item.title}`,
+            subtitle: "A delicious fruit",
+            command: new ToastCommand(item.title),
+          })
+      );
+  }
+}
+
+class ToastCommand extends Command {
+  private fruit: string;
+
+  constructor(fruit: string) {
+    super({ id: `toast-${fruit}`, name: `Select ${fruit}` });
+    this.fruit = fruit;
+  }
+
+  async invoke() {
+    return {
+      kind: CommandResultKind.ShowToast,
+      args: { Message: `You selected ${this.fruit}!` },
+    };
+  }
+}
+```
+
+Add the searchable page to your `MainPage.getItems()`:
+
+```typescript
+new ListItem({
+  title: "Fruit Search",
+  subtitle: "Search through a list of fruits",
+  command: new SearchablePage(),
+  icon: iconFromGlyph("\uE721"),
+}),
+```
+
+---
+
+## Step 5: Add a Content Page
+
+Content pages display rich content — markdown, images, and forms:
+
+```typescript
+import {
+  ContentPage,
+  MarkdownContent,
+  ImageContent,
+  FormContent,
+  iconFromUrl,
+  // ... other imports
+} from "@microsoft/cmdpal-sdk";
+
+class AboutPage extends ContentPage {
+  constructor() {
+    super({
+      id: "about-page",
+      name: "About",
+      icon: iconFromGlyph("\uE946"), // Info icon
+    });
+  }
+
+  async getContent() {
+    return [
+      new MarkdownContent({
+        body: `# My First Extension
+
+This extension was built with the CmdPal TypeScript SDK.
+
+## Features
+- **Simple commands** with toast notifications
+- **Searchable lists** with dynamic filtering
+- **Rich content** with markdown and images
+`,
+      }),
+    ];
+  }
+}
+```
+
+---
+
+## Step 6: Add Settings
+
+Extensions can have a settings page using Adaptive Cards:
+
+```typescript
+import {
+  FormPage,
+  // ... other imports
+} from "@microsoft/cmdpal-sdk";
+
+class SettingsPage extends FormPage {
+  constructor() {
+    super({
+      id: "settings",
+      name: "Settings",
+      icon: iconFromGlyph("\uE713"),
+    });
+  }
+
+  async getContent() {
+    return [
+      new FormContent({
+        templateJson: JSON.stringify({
+          type: "AdaptiveCard",
+          body: [
+            {
+              type: "Input.Text",
+              id: "greeting",
+              label: "Custom Greeting",
+              placeholder: "Enter a greeting...",
+              value: "Hello",
+            },
+            {
+              type: "Input.Toggle",
+              id: "showEmoji",
+              title: "Show emoji in results",
+              value: "true",
+            },
+          ],
+          actions: [
+            {
+              type: "Action.Submit",
+              title: "Save",
+            },
+          ],
+          $schema: "http://adaptivecards.io/schemas/adaptive-card.json",
+          version: "1.5",
+        }),
+        dataJson: JSON.stringify({
+          greeting: "Hello",
+          showEmoji: "true",
+        }),
+      }),
+    ];
+  }
+
+  async onFormSubmit(inputs: Record<string, string>) {
+    // Save settings (e.g., to a file or state)
+    console.log("Settings saved:", inputs);
+    return {
+      kind: CommandResultKind.ShowToast,
+      args: { Message: "Settings saved!" },
+    };
+  }
+}
+```
+
+Register the settings page in your provider:
+
+```typescript
+class MyProvider extends CommandProvider {
+  constructor() {
+    super("my-first-extension", "My First Extension");
+  }
+
+  getSettings() {
+    return new SettingsPage();
+  }
+
+  // ... getTopLevelCommands
+}
+```
+
+---
+
+## Step 7: Add Context Commands and Details
+
+List items can have context menu commands and a details panel:
+
+```typescript
+import {
+  CopyTextCommand,
+  OpenUrlCommand,
+  Details,
+  DetailsMetadata,
+  TagsData,
+  Tag,
+  LinkData,
+  // ... other imports
+} from "@microsoft/cmdpal-sdk";
+
+// In your getItems():
+new ListItem({
+  title: "GitHub",
+  subtitle: "Open GitHub in your browser",
+  command: new OpenUrlCommand({
+    id: "open-github",
+    name: "Open GitHub",
+    url: "https://github.com",
+  }),
+  icon: iconFromGlyph("\uE774"),
+  tags: [
+    new Tag({ text: "Web", foreground: { r: 100, g: 200, b: 255, a: 255 } }),
+  ],
+  details: new Details({
+    title: "GitHub",
+    body: "The world's leading software development platform.",
+    heroImage: iconFromGlyph("\uE774"),
+    metadata: [
+      new DetailsMetadata({
+        key: "URL",
+        data: new LinkData({
+          link: "https://github.com",
+          text: "github.com",
+        }),
+      }),
+      new DetailsMetadata({
+        key: "Tags",
+        data: new TagsData({
+          tags: [new Tag({ text: "Development" }), new Tag({ text: "Git" })],
+        }),
+      }),
+    ],
+  }),
+  moreCommands: [
+    {
+      title: "Copy URL",
+      command: new CopyTextCommand({
+        id: "copy-github-url",
+        name: "Copy URL",
+        text: "https://github.com",
+      }),
+      icon: iconFromGlyph("\uE8C8"),
+    },
+  ],
+});
+```
+
+---
+
+## Step 8: Rebuild and Test
+
+```bash
+# Rebuild after changes
+npx tsc
+```
+
+CmdPal watches for `*.js` file changes and hot-reloads automatically. After running `tsc`, your extension will reload within ~500ms.
+
+---
+
+## Debugging Tips
+
+### Enable Debug Mode
+
+Set `"debug": true` in the `cmdpal` section of your `package.json`. The Node.js process starts with `--inspect`, allowing you to attach a debugger.
+
+### Attach VS Code Debugger
+
+Add to `.vscode/launch.json`:
+
+```json
+{
+  "type": "node",
+  "request": "attach",
+  "name": "Attach to CmdPal Extension",
+  "port": 9229,
+  "restart": true,
+  "skipFiles": ["<node_internals>/**"]
+}
+```
+
+### View Logs
+
+Use `host.log()` in your extension to send messages to the CmdPal log:
+
+```typescript
+// Inside any command or page method:
+host.log("Fetching items...", MessageState.Info);
+host.log("Error occurred!", MessageState.Error);
+```
+
+### Common Issues
+
+| Issue | Solution |
+|-------|----------|
+| Extension not showing | Check `package.json` has a `cmdpal` section and valid `name` + `main` |
+| Blank page | Check `getItems()` or `getContent()` is returning data |
+| Command does nothing | Ensure `invoke()` returns a valid `CommandResultKind` |
+| Images not loading | Use `iconFromUrl()` or `iconFromBase64()` helpers |
+| Settings crash | Ensure form template JSON is valid Adaptive Card schema |
+
+---
+
+## Next Steps
+
+- Read the [TypeScript SDK Reference](./02-typescript-sdk.md) for the full API
+- Read the [JSON-RPC Protocol Specification](./03-jsonrpc-protocol.md) to understand the wire format
+- Check out the [Sample Extension](../src/modules/cmdpal/ext/SampleJSExtension/) for a comprehensive example
+- Read the [Architecture Overview](./01-architecture.md) for how it all fits together

src/modules/cmdpal/doc/json-rpc-spec/overview.md

@@ -0,0 +1,83 @@
+# Command Palette JavaScript Extension System Design Specification
+
+> **Status:** Draft — seeking community and internal feedback<br/>
+> **Last updated:** 2006-06-17
+
+## Table of Contents
+
+| Document | Description |
+|----------|-------------|
+| [01 — Architecture Overview](01-architecture.md) | Process model, extension lifecycle, transport, and security |
+| [02 — TypeScript SDK Reference](02-typescript-sdk.md) | Full API surface: types, base classes, helpers, and runtime |
+| [03 — JSON-RPC Protocol](03-jsonrpc-protocol.md) | Complete protocol specification: methods, notifications, framing |
+| [04 — Extension Manifest & Packaging](04-manifest-packaging.md) | `package.json` schema, project structure, distribution |
+
+---
+
+## Executive Summary
+
+Command Palette (CmdPal) is extending its extension model beyond in-process WinRT/COM extensions to support **JavaScript and TypeScript extensions** that run as isolated Node.js processes, communicating with the host over JSON-RPC 2.0 via stdio.
+
+### Goals
+
+1. **Developer accessibility** — Let web developers build CmdPal extensions using familiar tools (TypeScript, npm, Node.js)
+2. **Process isolation** — Extension crashes don't take down CmdPal; extensions can't corrupt host state
+3. **Type-safe SDK** — Full TypeScript type definitions mirroring the C# toolkit surface
+4. **Developer experience** — Hot-reload on file changes, debugger attachment, familiar project structure
+5. **Feature parity** — JS extensions can create list pages, content pages, forms, grids, settings, and more
+
+### Non-Goals (v1)
+
+- Browser/WebView-based extension UI rendering
+- Sandboxed filesystem access or permission model
+- Extension marketplace / auto-update infrastructure
+- Multi-language JSONRPC support beyond JavaScript/TypeScript (Python, Go, etc.)
+
+### Architecture at a Glance
+
+```mermaid
+flowchart LR
+	subgraph Host["Command Palette (WinUI Host)"]
+		subgraph JS["JsonRpcExtensionService"]
+			A["JSExtensionWrapper (ext A)"] --> ARPC["JsonRpcConnection\n(stdio, LSP framing)"]
+			B["JSExtensionWrapper (ext B)"] --> BRPC["JsonRpcConnection\n(stdio, LSP framing)"]
+			N["... one process per extension"]
+		end
+
+		W["WinRTExtensionService\n(existing COM/WinRT extensions)"]
+		BI["BuiltInExtensionService\n(built-in extensions)"]
+	end
+
+	ARPC <-->|"JSON-RPC 2.0 over stdio"| NODEA["node ext-a.js\n(TS SDK runtime)"]
+	BRPC <-->|"JSON-RPC 2.0 over stdio"| NODEB["node ext-b.js\n(TS SDK runtime)"]
+```
+
+Each JS extension runs in its own Node.js process. The host spawns the process, establishes a JSON-RPC 2.0 connection over stdin/stdout with LSP-style `Content-Length` framing, sends an `initialize` request, and then queries the extension for commands, pages, and content as the user navigates.
+
+### Key Design Decisions
+
+| Decision | Choice | Rationale |
+|----------|--------|-----------|
+| Process model | One Node.js process per extension | Isolation, independent crash recovery, independent debugging |
+| Transport | stdio with LSP framing | No port conflicts, no network exposure, proven by LSP ecosystem |
+| Protocol | JSON-RPC 2.0 | Standard, well-tooled, bidirectional |
+| SDK language | TypeScript | Type safety, npm ecosystem, familiar to web developers |
+| Entry point | `cmdpal` field in `package.json` | Simple, declarative, same pattern as VS Code's contributions |
+| Icon data | Base64-encoded in JSON | No filesystem sharing needed, works with generated/fetched images |
+| Hot-reload | FileSystemWatcher on `*.js` | Immediate feedback during development |
+
+---
+
+## Feedback Requested
+
+We are seeking feedback on the following areas:
+
+1. **API surface** — Are the base classes and types intuitive? What's missing?
+2. **Extension lifecycle** — Is the initialize → query → dispose model sufficient?
+3. **Manifest schema** — What additional fields would be useful?
+4. **Distribution** — Should we support npm-based installation? Local-only? Both?
+5. **Security** — What permission boundaries should exist for JS extensions?
+6. **Developer experience** — What tooling (CLI scaffolding, debugging, testing) is most important?
+7. **Performance** — Are there concerns about per-extension Node.js processes?
+
+Please file issues with the tag `[CmdPal-JS-SDK]`.

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/Icons.cs

@@ -17,4 +17,6 @@ internal sealed class Icons
     internal static IconInfo TimeDateIcon { get; } = new IconInfo("\uEC92");
 
     internal static IconInfo ErrorIcon { get; } = IconHelpers.FromRelativePaths("Microsoft.CmdPal.Ext.TimeDate\\Assets\\Warning.light.png", "Microsoft.CmdPal.Ext.TimeDate\\Assets\\Warning.dark.png");
+
+    internal static IconInfo NotificationCenterIcon { get; } = new IconInfo("\uEA8F");
 }

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/Properties/Resources.Designer.cs

@@ -959,5 +959,23 @@ namespace Microsoft.CmdPal.Ext.TimeDate {
                 return ResourceManager.GetString("timedate_copy_time_command_name", resourceCulture);
             }
         }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Open notification center.
+        /// </summary>
+        public static string timedate_show_notification_center_command_name {
+            get {
+                return ResourceManager.GetString("timedate_show_notification_center_command_name", resourceCulture);
+            }
+        }
+        
+        /// <summary>
+        ///   Looks up a localized string similar to Notification center.
+        /// </summary>
+        public static string timedate_notification_center_band_title {
+            get {
+                return ResourceManager.GetString("timedate_notification_center_band_title", resourceCulture);
+            }
+        }
     }
 }

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/Properties/Resources.resx

@@ -444,4 +444,12 @@
     <value>Copy date</value>
     <comment>Name of a command to copy the current date to the clipboard</comment>
   </data>
+  <data name="timedate_show_notification_center_command_name" xml:space="preserve">
+    <value>Open notification center</value>
+    <comment>Name of a command to open the Windows notification center (Action Center)</comment>
+  </data>
+  <data name="timedate_notification_center_band_title" xml:space="preserve">
+    <value>Notification center</value>
+    <comment>Title for the notification center dock band</comment>
+  </data>
 </root>

src/modules/cmdpal/ext/Microsoft.CmdPal.Ext.TimeDate/TimeDateCommandsProvider.cs

@@ -21,6 +21,7 @@ public sealed partial class TimeDateCommandsProvider : CommandProvider
     private readonly FallbackTimeDateItem _fallbackTimeDateItem = new(_settingsManager);
 
     private readonly ListItem _bandItem;
+    private readonly ListItem _notificationCenterBandItem;
 
     public TimeDateCommandsProvider()
     {
@@ -37,6 +38,7 @@ public sealed partial class TimeDateCommandsProvider : CommandProvider
         Settings = _settingsManager.Settings;
 
         _bandItem = new NowDockBand();
+        _notificationCenterBandItem = new NotificationCenterDockBand();
     }
 
     private string GetTranslatedPluginDescription()
@@ -54,7 +56,7 @@ public sealed partial class TimeDateCommandsProvider : CommandProvider
 
     public override ICommandItem[] GetDockBands()
     {
-        var wrappedBand = new WrappedDockItem(
+        var clockBand = new WrappedDockItem(
             [_bandItem],
             "com.microsoft.cmdpal.timedate.dockBand",
             Resources.Microsoft_plugin_timedate_dock_band_title)
@@ -62,7 +64,15 @@ public sealed partial class TimeDateCommandsProvider : CommandProvider
             Icon = Icons.TimeDateExtIcon,
         };
 
-        return new ICommandItem[] { wrappedBand };
+        var notificationBand = new WrappedDockItem(
+            [_notificationCenterBandItem],
+            "com.microsoft.cmdpal.timedate.notificationCenterBand",
+            Resources.timedate_notification_center_band_title)
+        {
+            Icon = Icons.NotificationCenterIcon,
+        };
+
+        return new ICommandItem[] { clockBand, notificationBand };
     }
 }
 #pragma warning disable SA1402 // File may only contain a single type
@@ -75,7 +85,8 @@ internal sealed partial class NowDockBand : ListItem
 
     public NowDockBand()
     {
-        Command = new NoOpCommand() { Id = "com.microsoft.cmdpal.timedate.dockBand" };
+        // Open Notification Center on click
+        Command = new OpenUrlCommand("ms-actioncenter:") { Id = "com.microsoft.cmdpal.timedate.dockBand", Name = Resources.timedate_show_notification_center_command_name, Result = CommandResult.Dismiss(), Icon = null };
         _copyTimeCommand = new CopyTextCommand(string.Empty) { Name = Resources.timedate_copy_time_command_name };
         _copyDateCommand = new CopyTextCommand(string.Empty) { Name = Resources.timedate_copy_date_command_name };
         MoreCommands = [
@@ -135,4 +146,20 @@ internal sealed partial class NowDockBand : ListItem
         _copyTimeCommand.Text = timeString;
     }
 }
+
+internal sealed partial class NotificationCenterDockBand : ListItem
+{
+    public NotificationCenterDockBand()
+    {
+        Icon = Icons.NotificationCenterIcon; // Notification bell
+        Title = Resources.timedate_notification_center_band_title;
+        Command = new OpenUrlCommand("ms-actioncenter:")
+        {
+            Id = "com.microsoft.cmdpal.timedate.notificationCenterBand",
+            Name = Resources.timedate_show_notification_center_command_name,
+            Result = CommandResult.Dismiss(),
+        };
+    }
+}
+
 #pragma warning restore SA1402 // File may only contain a single type

src/modules/powerdisplay/PowerDisplay.Lib.UnitTests/LinkedBrightnessPlannerTests.cs

@@ -0,0 +1,62 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.Generic;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using PowerDisplay.Common.Services;
+using static PowerDisplay.Common.Services.LinkedBrightnessPlanner;
+
+namespace PowerDisplay.UnitTests;
+
+/// <summary>
+/// Behavior tests for pure linked-brightness decision logic. These cover review-flagged seed
+/// cases without needing a WinUI DispatcherQueue.
+/// </summary>
+[TestClass]
+public class LinkedBrightnessPlannerTests
+{
+    private static LinkTarget Monitor(
+        string id,
+        int number,
+        int brightness)
+        => new LinkTarget(id, number, brightness);
+
+    [TestMethod]
+    public void Seed_EmptyList_Null()
+    {
+        Assert.IsNull(LinkedBrightnessPlanner.Seed(new List<LinkTarget>()));
+    }
+
+    [TestMethod]
+    public void Seed_PrefersLowestDisplayNumber_RegardlessOfListOrder()
+    {
+        // Enumeration order is deliberately reversed; the seed must still come from Display 1.
+        var monitors = new[]
+        {
+            Monitor("c", 3, 90),
+            Monitor("a", 1, 30),
+            Monitor("b", 2, 60),
+        };
+        Assert.AreEqual(30, LinkedBrightnessPlanner.Seed(monitors));
+    }
+
+    [TestMethod]
+    public void Seed_UnknownDisplayNumbers_FallBackToIdOrder()
+    {
+        // MonitorNumber 0 means "unknown"; those sort last and tie-break by Id for determinism.
+        var monitors = new[]
+        {
+            Monitor("z", 0, 90),
+            Monitor("m", 0, 45),
+        };
+        Assert.AreEqual(45, LinkedBrightnessPlanner.Seed(monitors));
+    }
+
+    [TestMethod]
+    public void Seed_SingleControllableDisplay_UsesItsBrightness()
+    {
+        var monitors = new[] { Monitor("only", 1, 64) };
+        Assert.AreEqual(64, LinkedBrightnessPlanner.Seed(monitors));
+    }
+}

src/modules/powerdisplay/PowerDisplay.Lib.UnitTests/LinkedBrightnessSettingsTests.cs

@@ -0,0 +1,96 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Text.Json;
+using Microsoft.PowerToys.Settings.UI.Library;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+
+namespace PowerDisplay.UnitTests;
+
+/// <summary>
+/// Covers the persisted shape of the linked-brightness feature on
+/// <see cref="PowerDisplayProperties"/>: defaults, JSON property names, and — most importantly —
+/// that settings written before the feature existed deserialize to safe defaults without any
+/// migration step (the forward-compatibility promise made to the module owner).
+/// </summary>
+[TestClass]
+public class LinkedBrightnessSettingsTests
+{
+    [TestMethod]
+    public void Defaults_LinkDisabled_AndExclusionListEmptyButNotNull()
+    {
+        var properties = new PowerDisplayProperties();
+
+        Assert.IsFalse(properties.LinkedLevelsActive, "Linked brightness must default to off.");
+        Assert.IsNotNull(properties.ExcludedFromSyncMonitorIds, "Exclusion list must never be null.");
+        Assert.AreEqual(0, properties.ExcludedFromSyncMonitorIds.Count, "Exclusion list must start empty.");
+    }
+
+    [TestMethod]
+    public void Deserialize_LegacyJsonMissingLinkFields_UsesDefaultsWithoutMigration()
+    {
+        // A settings.json captured before the linked-brightness feature shipped: it has none of
+        // the new keys. Deserializing must fall back to the constructor defaults rather than
+        // produce nulls or throw — this is the "no migration needed" guarantee.
+        const string legacyJson = """
+        {
+            "monitor_refresh_delay": 5,
+            "restore_settings_on_startup": false,
+            "show_system_tray_icon": true
+        }
+        """;
+
+        var properties = JsonSerializer.Deserialize<PowerDisplayProperties>(legacyJson);
+
+        Assert.IsNotNull(properties);
+        Assert.IsFalse(properties.LinkedLevelsActive);
+        Assert.IsNotNull(properties.ExcludedFromSyncMonitorIds);
+        Assert.AreEqual(0, properties.ExcludedFromSyncMonitorIds.Count);
+    }
+
+    [TestMethod]
+    public void RoundTrip_PreservesLinkStateAndExclusionList()
+    {
+        var original = new PowerDisplayProperties
+        {
+            LinkedLevelsActive = true,
+        };
+        original.ExcludedFromSyncMonitorIds.Add(@"\\?\DISPLAY#DELD1A8#5&abc&0&UID4357");
+        original.ExcludedFromSyncMonitorIds.Add(@"\\?\DISPLAY#DELD1A8#5&abc&0&UID4358");
+
+        var json = JsonSerializer.Serialize(original);
+        var restored = JsonSerializer.Deserialize<PowerDisplayProperties>(json);
+
+        Assert.IsNotNull(restored);
+        Assert.IsTrue(restored.LinkedLevelsActive);
+        CollectionAssert.AreEqual(original.ExcludedFromSyncMonitorIds, restored.ExcludedFromSyncMonitorIds);
+    }
+
+    [TestMethod]
+    public void Serialize_UsesSnakeCaseJsonKeys()
+    {
+        var properties = new PowerDisplayProperties { LinkedLevelsActive = true };
+        properties.ExcludedFromSyncMonitorIds.Add("monitor-id");
+
+        var json = JsonSerializer.Serialize(properties);
+
+        StringAssert.Contains(json, "\"linked_levels_active\":true");
+        StringAssert.Contains(json, "\"excluded_from_sync_monitor_ids\"");
+    }
+
+    [TestMethod]
+    public void ExclusionList_DistinguishesIdenticalModelMonitorsByDevicePath()
+    {
+        // Two physically identical monitors share an EdidId (DELD1A8) but differ in the PnP UID
+        // segment of Monitor.Id. Keying the exclusion set by Monitor.Id keeps them distinct, which
+        // is the whole reason the issue's "three identical monitors" scenario works.
+        var properties = new PowerDisplayProperties();
+        properties.ExcludedFromSyncMonitorIds.Add(@"\\?\DISPLAY#DELD1A8#5&abc&0&UID4357");
+
+        Assert.IsTrue(properties.ExcludedFromSyncMonitorIds.Contains(@"\\?\DISPLAY#DELD1A8#5&abc&0&UID4357"));
+        Assert.IsFalse(
+            properties.ExcludedFromSyncMonitorIds.Contains(@"\\?\DISPLAY#DELD1A8#5&abc&0&UID4358"),
+            "A different physical port (UID) must not be treated as excluded.");
+    }
+}

src/modules/powerdisplay/PowerDisplay.Lib/Drivers/DDC/DdcCiController.cs

@@ -483,8 +483,15 @@ namespace PowerDisplay.Common.Drivers.DDC
         {
             if (TryGetVcpFeature(handle, VcpCodeBrightness, monitor.Id, out uint current, out uint max))
             {
-                monitor.BrightnessVcpMax = (int)max;
                 var brightnessInfo = new VcpFeatureValue((int)current, 0, (int)max);
+                if (!brightnessInfo.IsValid)
+                {
+                    Logger.LogWarning(
+                        $"DDC: [{monitor.Id}] Ignoring invalid brightness range current={current}, max={max}");
+                    return;
+                }
+
+                monitor.BrightnessVcpMax = (int)max;
                 monitor.CurrentBrightness = brightnessInfo.ToPercentage();
             }
         }

src/modules/powerdisplay/PowerDisplay.Lib/Drivers/DDC/MonitorDiscoveryHelper.cs

@@ -130,7 +130,7 @@ namespace PowerDisplay.Common.Drivers.DDC
                 {
                     Id = monitorId,
                     Name = name.Trim(),
-                    CurrentBrightness = 50, // Default value, will be updated by MonitorManager after discovery
+                    CurrentBrightness = 50, // Initial placeholder; overwritten if the VCP read succeeds
                     Handle = physicalMonitor.HPhysicalMonitor,
                     Capabilities = MonitorCapabilities.DdcCi,
                     CommunicationMethod = "DDC/CI",

src/modules/powerdisplay/PowerDisplay.Lib/Services/LinkedBrightnessPlanner.cs

@@ -0,0 +1,40 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Collections.Generic;
+using System.Linq;
+
+namespace PowerDisplay.Common.Services
+{
+    /// <summary>
+    /// Pure decision logic for linked brightness, factored out of the WinUI ViewModel so initial
+    /// seed behavior can be unit-tested without a DispatcherQueue.
+    /// </summary>
+    public static class LinkedBrightnessPlanner
+    {
+        /// <summary>
+        /// A monitor's state relevant to linked-brightness planning.
+        /// </summary>
+        /// <param name="Id">Stable <c>Monitor.Id</c> (DevicePath form).</param>
+        /// <param name="MonitorNumber">Windows DISPLAY number (1-based); 0 when unknown.</param>
+        /// <param name="Brightness">Current brightness percentage (0-100).</param>
+        public readonly record struct LinkTarget(
+            string Id,
+            int MonitorNumber,
+            int Brightness);
+
+        /// <summary>
+        /// The value to seed the master slider with when link mode turns on, or null when there is
+        /// no linked target. The caller passes only included brightness-capable targets. Prefers
+        /// the lowest Windows DISPLAY number and Id order for determinism when numbers are missing
+        /// or tie.
+        /// </summary>
+        public static int? Seed(IEnumerable<LinkTarget> linkedTargets) =>
+            linkedTargets
+                .OrderBy(m => m.MonitorNumber <= 0 ? int.MaxValue : m.MonitorNumber)
+                .ThenBy(m => m.Id, System.StringComparer.Ordinal)
+                .Select(m => (int?)m.Brightness)
+                .FirstOrDefault();
+    }
+}

src/modules/powerdisplay/PowerDisplay/Helpers/SliderCommitScheduler.cs

@@ -0,0 +1,27 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Threading.Tasks;
+using Microsoft.UI.Dispatching;
+using PowerDisplay.Configuration;
+
+namespace PowerDisplay.Helpers;
+
+internal static class SliderCommitScheduler
+{
+    internal static void Schedule(ref DispatcherQueueTimer? timer, DispatcherQueue dispatcherQueue, Func<Task> commit)
+    {
+        if (timer == null)
+        {
+            timer = dispatcherQueue.CreateTimer();
+            timer.IsRepeating = false;
+            timer.Interval = TimeSpan.FromMilliseconds(AppConstants.UI.SliderCommitDebounceMs);
+            timer.Tick += (_, _) => _ = commit();
+        }
+
+        timer.Stop();
+        timer.Start();
+    }
+}

src/modules/powerdisplay/PowerDisplay/PowerDisplayXAML/MainWindow.xaml

@@ -1,4 +1,4 @@
-<winuiex:WindowEx
+<winuiex:WindowEx
     x:Class="PowerDisplay.MainWindow"
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
@@ -29,14 +29,16 @@
             <x:Double x:Key="FlyoutSeparatorHeight">1</x:Double>
             <GridLength x:Key="FlyoutSliderIconColumnWidth">20</GridLength>
             <x:Double x:Key="FlyoutActionGlyphFontSize">16</x:Double>
+            <x:Double x:Key="FlyoutLinkGlyphFontSize">16</x:Double>
             <x:Double x:Key="FlyoutActionGlyphSmallFontSize">14</x:Double>
             <x:Double x:Key="FlyoutActionGlyphExtraSmallFontSize">12</x:Double>
             <x:Double x:Key="FlyoutSecondaryTextFontSize">12</x:Double>
             <x:Double x:Key="FlyoutRotationGlyphFontSize">14</x:Double>
             <x:Double x:Key="FlyoutButtonSize">32</x:Double>
+            <x:Double x:Key="FlyoutSliderRowHeight">32</x:Double>
             <x:Double x:Key="FlyoutCompactSpacing">4</x:Double>
             <x:Double x:Key="FlyoutStandardSpacing">8</x:Double>
-            <x:Double x:Key="FlyoutMonitorSectionSpacing">32</x:Double>
+            <x:Double x:Key="FlyoutMonitorSectionSpacing">16</x:Double>
             <x:Double x:Key="FlyoutScanningIndicatorSize">24</x:Double>
             <x:Double x:Key="FlyoutScanningSpacing">16</x:Double>
             <Thickness x:Key="FlyoutButtonPadding">6</Thickness>
@@ -45,11 +47,11 @@
             <Thickness x:Key="FlyoutListHeaderMargin">16,0,8,0</Thickness>
             <Thickness x:Key="FlyoutListItemPadding">0,4</Thickness>
             <Thickness x:Key="FlyoutSelectionGlyphMargin">8,0,0,0</Thickness>
-            <Thickness x:Key="FlyoutSectionTopMargin">0,4,0,0</Thickness>
+            <Thickness x:Key="FlyoutSectionTopMargin">0,8,0,0</Thickness>
             <Thickness x:Key="FlyoutSectionContainerPadding">8,0,8,8</Thickness>
             <Thickness x:Key="FlyoutSeparatorMargin">8,8</Thickness>
             <Thickness x:Key="FlyoutStatusBarMargin">12,-8,12,0</Thickness>
-            <Thickness x:Key="MonitorHeaderOffsetMargin">10,0,0,0</Thickness>
+            <Thickness x:Key="MonitorHeaderOffsetMargin">0,8,0,0</Thickness>
             <Thickness x:Key="MonitorNameBaselineMargin">2,0,0,2</Thickness>
             <x:Double x:Key="FlyoutContextMenuMinWidth">240</x:Double>
             <x:Double x:Key="FlyoutContextMenuMaxWidth">320</x:Double>
@@ -62,6 +64,57 @@
                 <Setter Property="Height" Value="{StaticResource FlyoutButtonSize}" />
                 <Setter Property="FontFamily" Value="{ThemeResource SymbolThemeFontFamily}" />
             </Style>
+            <Style x:Key="FlyoutIconToggleButtonStyle" TargetType="ToggleButton">
+                <Setter Property="Padding" Value="{StaticResource FlyoutButtonPadding}" />
+                <Setter Property="Width" Value="{StaticResource FlyoutButtonSize}" />
+                <Setter Property="Height" Value="{StaticResource FlyoutButtonSize}" />
+                <Setter Property="Background" Value="Transparent" />
+                <Setter Property="BorderBrush" Value="Transparent" />
+                <Setter Property="BorderThickness" Value="0" />
+                <Setter Property="Template">
+                    <Setter.Value>
+                        <ControlTemplate TargetType="ToggleButton">
+                            <Border
+                                Padding="{TemplateBinding Padding}"
+                                Background="{TemplateBinding Background}"
+                                BorderBrush="{TemplateBinding BorderBrush}"
+                                BorderThickness="{TemplateBinding BorderThickness}">
+                                <ContentPresenter
+                                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
+                                    Content="{TemplateBinding Content}"
+                                    ContentTemplate="{TemplateBinding ContentTemplate}" />
+                            </Border>
+                        </ControlTemplate>
+                    </Setter.Value>
+                </Setter>
+            </Style>
+            <Style x:Key="FlyoutHeaderToggleButtonStyle" TargetType="ToggleButton">
+                <Setter Property="Padding" Value="0" />
+                <Setter Property="HorizontalContentAlignment" Value="Stretch" />
+                <Setter Property="VerticalContentAlignment" Value="Center" />
+                <Setter Property="Foreground" Value="{ThemeResource TextFillColorPrimaryBrush}" />
+                <Setter Property="Background" Value="Transparent" />
+                <Setter Property="BorderBrush" Value="Transparent" />
+                <Setter Property="BorderThickness" Value="0" />
+                <Setter Property="Template">
+                    <Setter.Value>
+                        <ControlTemplate TargetType="ToggleButton">
+                            <Border
+                                Padding="{TemplateBinding Padding}"
+                                Background="{TemplateBinding Background}"
+                                BorderBrush="{TemplateBinding BorderBrush}"
+                                BorderThickness="{TemplateBinding BorderThickness}">
+                                <ContentPresenter
+                                    HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
+                                    VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
+                                    Content="{TemplateBinding Content}"
+                                    ContentTemplate="{TemplateBinding ContentTemplate}" />
+                            </Border>
+                        </ControlTemplate>
+                    </Setter.Value>
+                </Setter>
+            </Style>
         </Grid.Resources>
         <Border x:Name="MainContainer">
             <Grid>
@@ -114,190 +167,131 @@
                             HorizontalScrollMode="Disabled"
                             IsTabStop="False"
                             VerticalScrollBarVisibility="Auto">
-                            <!--  Monitors List with modern card design  -->
-                            <ItemsRepeater
-                                x:Name="MonitorsRepeater"
-                                ItemsSource="{x:Bind ViewModel.Monitors, Mode=OneWay}"
-                                TabFocusNavigation="Local"
-                                Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.HasMonitors), Mode=OneWay}">
-                                <ItemsRepeater.Layout>
-                                    <StackLayout Orientation="Vertical" Spacing="{StaticResource FlyoutMonitorSectionSpacing}" />
-                                </ItemsRepeater.Layout>
-                                <ItemsRepeater.ItemTemplate>
-                                    <DataTemplate x:DataType="vm:MonitorViewModel">
-                                        <StackPanel Spacing="{StaticResource FlyoutCompactSpacing}" TabFocusNavigation="Local">
-                                            <!--  Monitor Name with Icon  -->
-                                            <Grid
-                                                Margin="{StaticResource MonitorHeaderOffsetMargin}"
-                                                HorizontalAlignment="Stretch"
-                                                ColumnSpacing="{StaticResource FlyoutStandardSpacing}">
-                                                <Grid.ColumnDefinitions>
-                                                    <ColumnDefinition Width="Auto" />
-                                                    <ColumnDefinition Width="*" />
-                                                    <ColumnDefinition Width="Auto" />
-                                                </Grid.ColumnDefinitions>
-                                                <local:MonitorIcon
-                                                    VerticalAlignment="Center"
-                                                    IsBuiltIn="{x:Bind IsInternal, Mode=OneWay}"
-                                                    MonitorNumber="{x:Bind MonitorNumber, Mode=OneWay}" />
+                            <!--  Linked-brightness + monitors list  -->
+                            <StackPanel Spacing="{StaticResource FlyoutStandardSpacing}" Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.HasMonitors), Mode=OneWay}">
+
+                                <!--  All displays card (visible only when link mode is on)  -->
+                                <StackPanel
+                                    Padding="{StaticResource FlyoutSectionContainerPadding}"
+                                    Background="{ThemeResource LayerOnAcrylicFillColorDefaultBrush}"
+                                    BorderBrush="{ThemeResource CardStrokeColorDefaultBrush}"
+                                    BorderThickness="1"
+                                    CornerRadius="{StaticResource OverlayCornerRadius}"
+                                    Spacing="{StaticResource FlyoutCompactSpacing}"
+                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.LinkedLevelsActive), Mode=OneWay}">
+                                    <Grid Margin="{StaticResource FlyoutSectionTopMargin}" ColumnSpacing="{StaticResource FlyoutStandardSpacing}">
+                                        <Grid.ColumnDefinitions>
+                                            <ColumnDefinition Width="Auto" />
+                                            <ColumnDefinition Width="*" />
+                                        </Grid.ColumnDefinitions>
+                                        <Viewbox
+                                            Width="16"
+                                            Height="16"
+                                            VerticalAlignment="Center">
+                                            <FontIcon
+                                                FontSize="22"
+                                                Foreground="{ThemeResource TextFillColorPrimaryBrush}"
+                                                Glyph="&#xE975;" />
+                                        </Viewbox>
+                                        <StackPanel Grid.Column="1" VerticalAlignment="Center">
+                                            <TextBlock
+                                                x:Uid="AllDisplaysTitle"
+                                                TextTrimming="CharacterEllipsis"
+                                                TextWrapping="NoWrap" />
+                                            <StackPanel Orientation="Horizontal" Spacing="{StaticResource FlyoutCompactSpacing}">
                                                 <TextBlock
-                                                    Grid.Column="1"
-                                                    Margin="{StaticResource MonitorNameBaselineMargin}"
-                                                    VerticalAlignment="Center"
-                                                    Text="{x:Bind DisplayName, Mode=OneWay}"
-                                                    TextTrimming="CharacterEllipsis"
-                                                    TextWrapping="NoWrap"
-                                                    ToolTipService.ToolTip="{x:Bind DisplayName, Mode=OneWay}" />
-                                                <!--  Icon buttons for InputSource and ColorTemperature  -->
-                                                <StackPanel
-                                                    Grid.Column="2"
-                                                    HorizontalAlignment="Right"
-                                                    VerticalAlignment="Center"
-                                                    Orientation="Horizontal"
-                                                    Spacing="{StaticResource FlyoutCompactSpacing}">
-                                                    <!--  Color Temperature Button  -->
-                                                    <Button
-                                                        x:Uid="ColorTemperatureTooltip"
-                                                        Content="{ui:FontIcon Glyph=&#xE790;,
-                                                                              FontSize={StaticResource FlyoutActionGlyphFontSize}}"
-                                                        IsEnabled="{x:Bind IsInteractionEnabled, Mode=OneWay}"
-                                                        Style="{StaticResource SubtleButtonStyle}"
-                                                        Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowColorTemperature), Mode=OneWay}">
-                                                        <Button.Flyout>
-                                                            <Flyout Opened="Flyout_Opened" ShouldConstrainToRootBounds="False">
-                                                                <ListView
-                                                                    ItemsSource="{x:Bind AvailableColorPresets, Mode=OneWay}"
-                                                                    SelectionChanged="{x:Bind HandleColorTemperatureSelectionChanged}"
-                                                                    SelectionMode="Single">
-                                                                    <ListView.Header>
-                                                                        <TextBlock
-                                                                            x:Uid="ColorTemperatureHeader"
-                                                                            Margin="{StaticResource FlyoutListHeaderMargin}"
-                                                                            FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
-                                                                            Foreground="{ThemeResource TextFillColorSecondaryBrush}" />
-                                                                    </ListView.Header>
-                                                                    <ListView.ItemTemplate>
-                                                                        <DataTemplate x:DataType="vm:ColorTemperatureItem">
-                                                                            <Grid Padding="{StaticResource FlyoutListItemPadding}">
-                                                                                <Grid.ColumnDefinitions>
-                                                                                    <ColumnDefinition Width="*" />
-                                                                                    <ColumnDefinition Width="Auto" />
-                                                                                </Grid.ColumnDefinitions>
-                                                                                <TextBlock
-                                                                                    VerticalAlignment="Center"
-                                                                                    Text="{x:Bind DisplayName}"
-                                                                                    TextTrimming="CharacterEllipsis"
-                                                                                    TextWrapping="NoWrap" />
-                                                                                <FontIcon
-                                                                                    Grid.Column="1"
-                                                                                    Margin="{StaticResource FlyoutSelectionGlyphMargin}"
-                                                                                    FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
-                                                                                    Glyph="&#xE73E;"
-                                                                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(IsSelected)}" />
-                                                                            </Grid>
-                                                                        </DataTemplate>
-                                                                    </ListView.ItemTemplate>
-                                                                </ListView>
-                                                            </Flyout>
-                                                        </Button.Flyout>
-                                                    </Button>
-                                                    <!--  More Button (Input Source + Power State)  -->
-                                                    <Button
-                                                        x:Uid="MoreOptionsTooltip"
-                                                        Content="{ui:FontIcon Glyph=&#xE712;,
-                                                                              FontSize={StaticResource FlyoutActionGlyphFontSize}}"
-                                                        Style="{StaticResource SubtleButtonStyle}"
-                                                        Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowMoreButton), Mode=OneWay}">
-                                                        <Button.Flyout>
-                                                            <Flyout
-                                                                Opened="Flyout_Opened"
-                                                                Placement="BottomEdgeAlignedRight"
-                                                                ShouldConstrainToRootBounds="False">
-                                                                <StackPanel MinWidth="{StaticResource FlyoutContextMenuMinWidth}" MaxWidth="{StaticResource FlyoutContextMenuMaxWidth}">
-                                                                    <!--  Input Source Section  -->
-                                                                    <ListView
-                                                                        ItemsSource="{x:Bind AvailableInputSources, Mode=OneWay}"
-                                                                        SelectionChanged="{x:Bind HandleInputSourceSelectionChanged}"
-                                                                        SelectionMode="Single"
-                                                                        Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowInputSource), Mode=OneWay}">
-                                                                        <ListView.Header>
-                                                                            <TextBlock
-                                                                                x:Uid="InputSourceHeader"
-                                                                                Margin="{StaticResource FlyoutListHeaderMargin}"
-                                                                                FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
-                                                                                Foreground="{ThemeResource TextFillColorSecondaryBrush}" />
-                                                                        </ListView.Header>
-                                                                        <ListView.ItemTemplate>
-                                                                            <DataTemplate x:DataType="vm:InputSourceItem">
-                                                                                <Grid Padding="{StaticResource FlyoutListItemPadding}">
-                                                                                    <Grid.ColumnDefinitions>
-                                                                                        <ColumnDefinition Width="*" />
-                                                                                        <ColumnDefinition Width="Auto" />
-                                                                                    </Grid.ColumnDefinitions>
-                                                                                    <TextBlock
-                                                                                        VerticalAlignment="Center"
-                                                                                        Text="{x:Bind Name}"
-                                                                                        TextTrimming="CharacterEllipsis"
-                                                                                        TextWrapping="NoWrap" />
-                                                                                    <FontIcon
-                                                                                        Grid.Column="1"
-                                                                                        Margin="{StaticResource FlyoutSelectionGlyphMargin}"
-                                                                                        FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
-                                                                                        Glyph="&#xE73E;"
-                                                                                        Visibility="{x:Bind SelectionVisibility}" />
-                                                                                </Grid>
-                                                                            </DataTemplate>
-                                                                        </ListView.ItemTemplate>
-                                                                    </ListView>
-                                                                    <!--  Separator between Input Source and Power State  -->
-                                                                    <Border
-                                                                        Height="{StaticResource FlyoutSeparatorHeight}"
-                                                                        Margin="{StaticResource FlyoutSeparatorMargin}"
-                                                                        Background="{ThemeResource DividerStrokeColorDefaultBrush}"
-                                                                        Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowSeparatorAfterInputSource), Mode=OneWay}" />
-                                                                    <!--  Power State Section  -->
-                                                                    <ListView
-                                                                        ItemsSource="{x:Bind AvailablePowerStates, Mode=OneWay}"
-                                                                        SelectionChanged="{x:Bind HandlePowerStateSelectionChanged}"
-                                                                        SelectionMode="Single"
-                                                                        Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowPowerState), Mode=OneWay}">
-                                                                        <ListView.Header>
-                                                                            <TextBlock
-                                                                                x:Uid="PowerStateHeader"
-                                                                                Margin="{StaticResource FlyoutListHeaderMargin}"
-                                                                                FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
-                                                                                Foreground="{ThemeResource TextFillColorSecondaryBrush}" />
-                                                                        </ListView.Header>
-                                                                        <ListView.ItemTemplate>
-                                                                            <DataTemplate x:DataType="vm:PowerStateItem">
-                                                                                <Grid Padding="{StaticResource FlyoutListItemPadding}">
-                                                                                    <Grid.ColumnDefinitions>
-                                                                                        <ColumnDefinition Width="*" />
-                                                                                        <ColumnDefinition Width="Auto" />
-                                                                                    </Grid.ColumnDefinitions>
-                                                                                    <TextBlock
-                                                                                        VerticalAlignment="Center"
-                                                                                        Text="{x:Bind Name}"
-                                                                                        TextTrimming="CharacterEllipsis"
-                                                                                        TextWrapping="NoWrap" />
-                                                                                    <FontIcon
-                                                                                        Grid.Column="1"
-                                                                                        Margin="{StaticResource FlyoutSelectionGlyphMargin}"
-                                                                                        FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
-                                                                                        Glyph="&#xE73E;"
-                                                                                        Visibility="{x:Bind SelectionVisibility}" />
-                                                                                </Grid>
-                                                                            </DataTemplate>
-                                                                        </ListView.ItemTemplate>
-                                                                    </ListView>
-                                                                </StackPanel>
-                                                            </Flyout>
-                                                        </Button.Flyout>
-                                                    </Button>
-                                                </StackPanel>
-                                            </Grid>
+                                                    FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                    Foreground="{ThemeResource TextFillColorSecondaryBrush}"
+                                                    Text="{x:Bind ViewModel.LinkedMonitorsCountText, Mode=OneWay}" />
+                                                <TextBlock
+                                                    FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                    Foreground="{ThemeResource TextFillColorSecondaryBrush}"
+                                                    Text="•"
+                                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.HasExcludedMonitors), Mode=OneWay}" />
+                                                <TextBlock
+                                                    FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                    Foreground="{ThemeResource TextFillColorSecondaryBrush}"
+                                                    Text="{x:Bind ViewModel.ExcludedMonitorsCountText, Mode=OneWay}"
+                                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.HasExcludedMonitors), Mode=OneWay}" />
+                                            </StackPanel>
+                                        </StackPanel>
+                                    </Grid>
+                                    <Grid
+                                        Height="{StaticResource FlyoutSliderRowHeight}"
+                                        Margin="{StaticResource FlyoutSectionTopMargin}"
+                                        ColumnSpacing="{StaticResource FlyoutStandardSpacing}">
+                                        <Grid.ColumnDefinitions>
+                                            <ColumnDefinition Width="{StaticResource FlyoutSliderIconColumnWidth}" />
+                                            <ColumnDefinition Width="*" />
+                                        </Grid.ColumnDefinitions>
+                                        <FontIcon
+                                            HorizontalAlignment="Center"
+                                            VerticalAlignment="Center"
+                                            AutomationProperties.AccessibilityView="Raw"
+                                            FontSize="{StaticResource FlyoutActionGlyphFontSize}"
+                                            Glyph="&#xEC8A;" />
+                                        <Slider
+                                            x:Uid="AllDisplaysBrightnessAutomation"
+                                            Grid.Column="1"
+                                            VerticalAlignment="Center"
+                                            helpers:SliderExtensions.IsMouseWheelEnabled="True"
+                                            helpers:SliderExtensions.MouseWheelChange="5"
+                                            IsEnabled="{x:Bind ViewModel.IsLinkedBrightnessSliderEnabled, Mode=OneWay}"
+                                            IsTabStop="True"
+                                            Maximum="100"
+                                            Minimum="0"
+                                            Value="{x:Bind ViewModel.LinkedBrightness, Mode=TwoWay}" />
+                                    </Grid>
+                                </StackPanel>
+
+                                <!--  Individual displays section header (visible only when link mode is on)  -->
+                                <ToggleButton
+                                    x:Name="IndividualDisplaysToggle"
+                                    x:Uid="IndividualDisplaysToggle"
+                                    HorizontalAlignment="Stretch"
+                                    HorizontalContentAlignment="Stretch"
+                                    Background="Transparent"
+                                    BorderThickness="0"
+                                    IsChecked="{x:Bind ViewModel.IndividualDisplaysExpanded, Mode=TwoWay}"
+                                    Style="{StaticResource FlyoutHeaderToggleButtonStyle}"
+                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.LinkedLevelsActive), Mode=OneWay}">
+                                    <Grid HorizontalAlignment="Stretch" ColumnSpacing="{StaticResource FlyoutStandardSpacing}">
+                                        <Grid.ColumnDefinitions>
+                                            <ColumnDefinition Width="Auto" />
+                                            <ColumnDefinition Width="Auto" />
+                                            <ColumnDefinition Width="*" />
+                                        </Grid.ColumnDefinitions>
+                                        <TextBlock x:Uid="IndividualDisplaysHeader" VerticalAlignment="Center" />
+                                        <FontIcon
+                                            Grid.Column="1"
+                                            FontSize="{StaticResource FlyoutActionGlyphExtraSmallFontSize}"
+                                            Glyph="&#xE70D;"
+                                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.ShowIndividualDisplaysCollapsedIcon), Mode=OneWay}" />
+                                        <FontIcon
+                                            Grid.Column="1"
+                                            FontSize="{StaticResource FlyoutActionGlyphExtraSmallFontSize}"
+                                            Glyph="&#xE70E;"
+                                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.IndividualDisplaysExpanded), Mode=OneWay}" />
+                                        <Border
+                                            Grid.Column="2"
+                                            Height="{StaticResource FlyoutSeparatorHeight}"
+                                            VerticalAlignment="Center"
+                                            Background="{ThemeResource DividerStrokeColorDefaultBrush}" />
+                                    </Grid>
+                                </ToggleButton>
+
+                                <!--  Monitors List with modern card design  -->
+                                <ItemsRepeater
+                                    x:Name="MonitorsRepeater"
+                                    ItemsSource="{x:Bind ViewModel.Monitors, Mode=OneWay}"
+                                    TabFocusNavigation="Local"
+                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.ShowIndividualDisplays), Mode=OneWay}">
+                                    <ItemsRepeater.Layout>
+                                        <StackLayout Orientation="Vertical" Spacing="{StaticResource FlyoutMonitorSectionSpacing}" />
+                                    </ItemsRepeater.Layout>
+                                    <ItemsRepeater.ItemTemplate>
+                                        <DataTemplate x:DataType="vm:MonitorViewModel">
                                             <StackPanel
-                                                Margin="{StaticResource FlyoutSectionTopMargin}"
                                                 Padding="{StaticResource FlyoutSectionContainerPadding}"
                                                 Background="{ThemeResource LayerOnAcrylicFillColorDefaultBrush}"
                                                 BorderBrush="{ThemeResource CardStrokeColorDefaultBrush}"
@@ -305,11 +299,216 @@
                                                 CornerRadius="{StaticResource OverlayCornerRadius}"
                                                 TabFocusNavigation="Local"
                                                 XYFocusKeyboardNavigation="Enabled">
+                                                <!--  Monitor Name with Icon  -->
+                                                <Grid
+                                                    Height="{StaticResource FlyoutButtonSize}"
+                                                    Margin="{StaticResource MonitorHeaderOffsetMargin}"
+                                                    HorizontalAlignment="Stretch"
+                                                    ColumnSpacing="{StaticResource FlyoutStandardSpacing}">
+                                                    <Grid.ColumnDefinitions>
+                                                        <ColumnDefinition Width="Auto" />
+                                                        <ColumnDefinition Width="*" />
+                                                        <ColumnDefinition Width="Auto" />
+                                                    </Grid.ColumnDefinitions>
+                                                    <local:MonitorIcon
+                                                        VerticalAlignment="Center"
+                                                        IsBuiltIn="{x:Bind IsInternal, Mode=OneWay}"
+                                                        MonitorNumber="{x:Bind MonitorNumber, Mode=OneWay}" />
+                                                    <TextBlock
+                                                        Grid.Column="1"
+                                                        Margin="{StaticResource MonitorNameBaselineMargin}"
+                                                        VerticalAlignment="Center"
+                                                        Text="{x:Bind DisplayName, Mode=OneWay}"
+                                                        TextTrimming="CharacterEllipsis"
+                                                        TextWrapping="NoWrap"
+                                                        ToolTipService.ToolTip="{x:Bind DisplayName, Mode=OneWay}" />
+                                                    <!--  Icon buttons for InputSource and ColorTemperature  -->
+                                                    <StackPanel
+                                                        Grid.Column="2"
+                                                        HorizontalAlignment="Right"
+                                                        VerticalAlignment="Center"
+                                                        Orientation="Horizontal"
+                                                        Spacing="{StaticResource FlyoutCompactSpacing}">
+                                                        <!--  Exclude-from-linked-brightness toggle (only shown while link mode is on)  -->
+                                                        <ToggleButton
+                                                            x:Uid="ExcludeFromSyncToggle"
+                                                            IsChecked="{x:Bind IsExcludedFromSync, Mode=TwoWay}"
+                                                            IsEnabled="{x:Bind IsInteractionEnabled, Mode=OneWay}"
+                                                            Style="{StaticResource FlyoutIconToggleButtonStyle}"
+                                                            ToolTipService.ToolTip="{x:Bind SyncToggleToolTip, Mode=OneWay}"
+                                                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowExcludeButton), Mode=OneWay}">
+                                                            <Grid>
+                                                                <FontIcon
+                                                                    FontSize="{StaticResource FlyoutLinkGlyphFontSize}"
+                                                                    Foreground="{ThemeResource AccentFillColorDefaultBrush}"
+                                                                    Glyph="&#xE71B;"
+                                                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowIncludedInSyncIcon), Mode=OneWay}" />
+                                                                <Grid Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(IsExcludedFromSync), Mode=OneWay}">
+                                                                    <FontIcon
+                                                                        FontSize="{StaticResource FlyoutLinkGlyphFontSize}"
+                                                                        Foreground="{ThemeResource TextFillColorSecondaryBrush}"
+                                                                        Glyph="&#xE71B;" />
+                                                                    <Border
+                                                                        Width="2"
+                                                                        Height="16"
+                                                                        HorizontalAlignment="Center"
+                                                                        VerticalAlignment="Center"
+                                                                        Background="{ThemeResource TextFillColorSecondaryBrush}"
+                                                                        RenderTransformOrigin="0.5,0.5">
+                                                                        <Border.RenderTransform>
+                                                                            <RotateTransform Angle="-45" />
+                                                                        </Border.RenderTransform>
+                                                                    </Border>
+                                                                </Grid>
+                                                            </Grid>
+                                                        </ToggleButton>
+                                                        <!--  Color Temperature Button  -->
+                                                        <Button
+                                                            x:Uid="ColorTemperatureTooltip"
+                                                            Content="{ui:FontIcon Glyph=&#xE790;,
+                                                                                  FontSize={StaticResource FlyoutActionGlyphFontSize}}"
+                                                            IsEnabled="{x:Bind IsInteractionEnabled, Mode=OneWay}"
+                                                            Style="{StaticResource SubtleButtonStyle}"
+                                                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowColorTemperature), Mode=OneWay}">
+                                                            <Button.Flyout>
+                                                                <Flyout Opened="Flyout_Opened" ShouldConstrainToRootBounds="False">
+                                                                    <ListView
+                                                                        ItemsSource="{x:Bind AvailableColorPresets, Mode=OneWay}"
+                                                                        SelectionChanged="{x:Bind HandleColorTemperatureSelectionChanged}"
+                                                                        SelectionMode="Single">
+                                                                        <ListView.Header>
+                                                                            <TextBlock
+                                                                                x:Uid="ColorTemperatureHeader"
+                                                                                Margin="{StaticResource FlyoutListHeaderMargin}"
+                                                                                FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                                                Foreground="{ThemeResource TextFillColorSecondaryBrush}" />
+                                                                        </ListView.Header>
+                                                                        <ListView.ItemTemplate>
+                                                                            <DataTemplate x:DataType="vm:ColorTemperatureItem">
+                                                                                <Grid Padding="{StaticResource FlyoutListItemPadding}">
+                                                                                    <Grid.ColumnDefinitions>
+                                                                                        <ColumnDefinition Width="*" />
+                                                                                        <ColumnDefinition Width="Auto" />
+                                                                                    </Grid.ColumnDefinitions>
+                                                                                    <TextBlock
+                                                                                        VerticalAlignment="Center"
+                                                                                        Text="{x:Bind DisplayName}"
+                                                                                        TextTrimming="CharacterEllipsis"
+                                                                                        TextWrapping="NoWrap" />
+                                                                                    <FontIcon
+                                                                                        Grid.Column="1"
+                                                                                        Margin="{StaticResource FlyoutSelectionGlyphMargin}"
+                                                                                        FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                                                        Glyph="&#xE73E;"
+                                                                                        Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(IsSelected)}" />
+                                                                                </Grid>
+                                                                            </DataTemplate>
+                                                                        </ListView.ItemTemplate>
+                                                                    </ListView>
+                                                                </Flyout>
+                                                            </Button.Flyout>
+                                                        </Button>
+                                                        <!--  More Button (Input Source + Power State)  -->
+                                                        <Button
+                                                            x:Uid="MoreOptionsTooltip"
+                                                            Content="{ui:FontIcon Glyph=&#xE712;,
+                                                                                  FontSize={StaticResource FlyoutActionGlyphFontSize}}"
+                                                            Style="{StaticResource SubtleButtonStyle}"
+                                                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowMoreButton), Mode=OneWay}">
+                                                            <Button.Flyout>
+                                                                <Flyout
+                                                                    Opened="Flyout_Opened"
+                                                                    Placement="BottomEdgeAlignedRight"
+                                                                    ShouldConstrainToRootBounds="False">
+                                                                    <StackPanel MinWidth="{StaticResource FlyoutContextMenuMinWidth}" MaxWidth="{StaticResource FlyoutContextMenuMaxWidth}">
+                                                                        <!--  Input Source Section  -->
+                                                                        <ListView
+                                                                            ItemsSource="{x:Bind AvailableInputSources, Mode=OneWay}"
+                                                                            SelectionChanged="{x:Bind HandleInputSourceSelectionChanged}"
+                                                                            SelectionMode="Single"
+                                                                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowInputSource), Mode=OneWay}">
+                                                                            <ListView.Header>
+                                                                                <TextBlock
+                                                                                    x:Uid="InputSourceHeader"
+                                                                                    Margin="{StaticResource FlyoutListHeaderMargin}"
+                                                                                    FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                                                    Foreground="{ThemeResource TextFillColorSecondaryBrush}" />
+                                                                            </ListView.Header>
+                                                                            <ListView.ItemTemplate>
+                                                                                <DataTemplate x:DataType="vm:InputSourceItem">
+                                                                                    <Grid Padding="{StaticResource FlyoutListItemPadding}">
+                                                                                        <Grid.ColumnDefinitions>
+                                                                                            <ColumnDefinition Width="*" />
+                                                                                            <ColumnDefinition Width="Auto" />
+                                                                                        </Grid.ColumnDefinitions>
+                                                                                        <TextBlock
+                                                                                            VerticalAlignment="Center"
+                                                                                            Text="{x:Bind Name}"
+                                                                                            TextTrimming="CharacterEllipsis"
+                                                                                            TextWrapping="NoWrap" />
+                                                                                        <FontIcon
+                                                                                            Grid.Column="1"
+                                                                                            Margin="{StaticResource FlyoutSelectionGlyphMargin}"
+                                                                                            FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                                                            Glyph="&#xE73E;"
+                                                                                            Visibility="{x:Bind SelectionVisibility}" />
+                                                                                    </Grid>
+                                                                                </DataTemplate>
+                                                                            </ListView.ItemTemplate>
+                                                                        </ListView>
+                                                                        <!--  Separator between Input Source and Power State  -->
+                                                                        <Border
+                                                                            Height="{StaticResource FlyoutSeparatorHeight}"
+                                                                            Margin="{StaticResource FlyoutSeparatorMargin}"
+                                                                            Background="{ThemeResource DividerStrokeColorDefaultBrush}"
+                                                                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowSeparatorAfterInputSource), Mode=OneWay}" />
+                                                                        <!--  Power State Section  -->
+                                                                        <ListView
+                                                                            ItemsSource="{x:Bind AvailablePowerStates, Mode=OneWay}"
+                                                                            SelectionChanged="{x:Bind HandlePowerStateSelectionChanged}"
+                                                                            SelectionMode="Single"
+                                                                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowPowerState), Mode=OneWay}">
+                                                                            <ListView.Header>
+                                                                                <TextBlock
+                                                                                    x:Uid="PowerStateHeader"
+                                                                                    Margin="{StaticResource FlyoutListHeaderMargin}"
+                                                                                    FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                                                    Foreground="{ThemeResource TextFillColorSecondaryBrush}" />
+                                                                            </ListView.Header>
+                                                                            <ListView.ItemTemplate>
+                                                                                <DataTemplate x:DataType="vm:PowerStateItem">
+                                                                                    <Grid Padding="{StaticResource FlyoutListItemPadding}">
+                                                                                        <Grid.ColumnDefinitions>
+                                                                                            <ColumnDefinition Width="*" />
+                                                                                            <ColumnDefinition Width="Auto" />
+                                                                                        </Grid.ColumnDefinitions>
+                                                                                        <TextBlock
+                                                                                            VerticalAlignment="Center"
+                                                                                            Text="{x:Bind Name}"
+                                                                                            TextTrimming="CharacterEllipsis"
+                                                                                            TextWrapping="NoWrap" />
+                                                                                        <FontIcon
+                                                                                            Grid.Column="1"
+                                                                                            Margin="{StaticResource FlyoutSelectionGlyphMargin}"
+                                                                                            FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                                                            Glyph="&#xE73E;"
+                                                                                            Visibility="{x:Bind SelectionVisibility}" />
+                                                                                    </Grid>
+                                                                                </DataTemplate>
+                                                                            </ListView.ItemTemplate>
+                                                                        </ListView>
+                                                                    </StackPanel>
+                                                                </Flyout>
+                                                            </Button.Flyout>
+                                                        </Button>
+                                                    </StackPanel>
+                                                </Grid>
                                                 <!--  Brightness Control  -->
                                                 <Grid
+                                                    Height="{StaticResource FlyoutSliderRowHeight}"
                                                     Margin="{StaticResource FlyoutSectionTopMargin}"
                                                     ColumnSpacing="{StaticResource FlyoutStandardSpacing}"
-                                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowBrightness), Mode=OneWay}">
+                                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ShowBrightnessSlider), Mode=OneWay}">
                                                     <Grid.ColumnDefinitions>
                                                         <ColumnDefinition Width="{StaticResource FlyoutSliderIconColumnWidth}" />
                                                         <ColumnDefinition Width="*" />
@@ -327,7 +526,7 @@
                                                         VerticalAlignment="Center"
                                                         helpers:SliderExtensions.IsMouseWheelEnabled="True"
                                                         helpers:SliderExtensions.MouseWheelChange="5"
-                                                        IsEnabled="{x:Bind IsInteractionEnabled, Mode=OneWay}"
+                                                        IsEnabled="{x:Bind IsBrightnessSliderEnabled, Mode=OneWay}"
                                                         IsTabStop="True"
                                                         Maximum="100"
                                                         Minimum="0"
@@ -473,10 +672,10 @@
                                                         </ToggleButton>-->
                                                 </Grid>
                                             </StackPanel>
-                                        </StackPanel>
-                                    </DataTemplate>
-                                </ItemsRepeater.ItemTemplate>
-                            </ItemsRepeater>
+                                        </DataTemplate>
+                                    </ItemsRepeater.ItemTemplate>
+                                </ItemsRepeater>
+                            </StackPanel>
                         </ScrollViewer>
                     </Grid>
                 </Border>
@@ -490,49 +689,74 @@
                         <ColumnDefinition Width="*" />
                         <ColumnDefinition Width="Auto" />
                     </Grid.ColumnDefinitions>
-                    <Button
-                        x:Name="ProfilesButton"
-                        x:Uid="ProfilesTooltip"
-                        Content="{ui:FontIcon Glyph=&#xE748;,
-                                              FontSize={StaticResource FlyoutActionGlyphFontSize}}"
-                        Style="{StaticResource SubtleButtonStyle}"
-                        Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.ShowProfileSwitcherButton), Mode=OneWay}">
-                        <Button.Flyout>
-                            <Flyout
-                                x:Name="ProfilesFlyout"
-                                Opened="Flyout_Opened"
-                                ShouldConstrainToRootBounds="False">
-                                <ListView
-                                    x:Name="ProfilesListView"
-                                    ItemsSource="{x:Bind ViewModel.Profiles, Mode=OneWay}"
-                                    SelectionChanged="ProfileListView_SelectionChanged"
-                                    SelectionMode="Single">
-                                    <ListView.Header>
-                                        <TextBlock
-                                            x:Uid="ProfilesHeader"
-                                            Margin="{StaticResource FlyoutListHeaderMargin}"
-                                            FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
-                                            Foreground="{ThemeResource TextFillColorSecondaryBrush}" />
-                                    </ListView.Header>
-                                    <ListView.ItemTemplate>
-                                        <DataTemplate x:DataType="models:PowerDisplayProfile">
+                    <StackPanel
+                        HorizontalAlignment="Left"
+                        VerticalAlignment="Center"
+                        Orientation="Horizontal"
+                        Spacing="{StaticResource FlyoutStandardSpacing}">
+                        <Button
+                            x:Name="ProfilesButton"
+                            x:Uid="ProfilesTooltip"
+                            Content="{ui:FontIcon Glyph=&#xE748;,
+                                                  FontSize={StaticResource FlyoutActionGlyphFontSize}}"
+                            Style="{StaticResource SubtleButtonStyle}"
+                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.ShowProfileSwitcherButton), Mode=OneWay}">
+                            <Button.Flyout>
+                                <Flyout
+                                    x:Name="ProfilesFlyout"
+                                    Opened="Flyout_Opened"
+                                    ShouldConstrainToRootBounds="False">
+                                    <ListView
+                                        x:Name="ProfilesListView"
+                                        ItemsSource="{x:Bind ViewModel.Profiles, Mode=OneWay}"
+                                        SelectionChanged="ProfileListView_SelectionChanged"
+                                        SelectionMode="Single">
+                                        <ListView.Header>
                                             <TextBlock
-                                                Padding="{StaticResource FlyoutListItemPadding}"
-                                                Text="{x:Bind Name}"
-                                                TextTrimming="CharacterEllipsis"
-                                                TextWrapping="NoWrap" />
-                                        </DataTemplate>
-                                    </ListView.ItemTemplate>
-                                </ListView>
-                            </Flyout>
-                        </Button.Flyout>
-                    </Button>
+                                                x:Uid="ProfilesHeader"
+                                                Margin="{StaticResource FlyoutListHeaderMargin}"
+                                                FontSize="{StaticResource FlyoutSecondaryTextFontSize}"
+                                                Foreground="{ThemeResource TextFillColorSecondaryBrush}" />
+                                        </ListView.Header>
+                                        <ListView.ItemTemplate>
+                                            <DataTemplate x:DataType="models:PowerDisplayProfile">
+                                                <TextBlock
+                                                    Padding="{StaticResource FlyoutListItemPadding}"
+                                                    Text="{x:Bind Name}"
+                                                    TextTrimming="CharacterEllipsis"
+                                                    TextWrapping="NoWrap" />
+                                            </DataTemplate>
+                                        </ListView.ItemTemplate>
+                                    </ListView>
+                                </Flyout>
+                            </Button.Flyout>
+                        </Button>
+                    </StackPanel>
                     <StackPanel
                         Grid.Column="1"
                         HorizontalAlignment="Right"
                         VerticalAlignment="Center"
                         Orientation="Horizontal"
                         Spacing="{StaticResource FlyoutStandardSpacing}">
+                        <ToggleButton
+                            x:Name="LinkLevelsToggle"
+                            x:Uid="LinkLevelsToggle"
+                            IsChecked="{x:Bind ViewModel.LinkedLevelsActive, Mode=TwoWay}"
+                            Style="{StaticResource FlyoutIconToggleButtonStyle}"
+                            Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.ShowLinkLevelsToggle), Mode=OneWay}">
+                            <Grid>
+                                <FontIcon
+                                    FontSize="{StaticResource FlyoutActionGlyphFontSize}"
+                                    Foreground="{ThemeResource TextFillColorSecondaryBrush}"
+                                    Glyph="&#xE71B;"
+                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.ShowLinkLevelsInactiveIcon), Mode=OneWay}" />
+                                <FontIcon
+                                    FontSize="{StaticResource FlyoutActionGlyphFontSize}"
+                                    Foreground="{ThemeResource AccentFillColorDefaultBrush}"
+                                    Glyph="&#xE71B;"
+                                    Visibility="{x:Bind helpers:VisibilityConverter.BoolToVisibility(ViewModel.LinkedLevelsActive), Mode=OneWay}" />
+                            </Grid>
+                        </ToggleButton>
                         <Button
                             x:Uid="RefreshTooltip"
                             Content="{ui:FontIcon Glyph=&#xE777;,
@@ -574,4 +798,4 @@
             </Grid>
         </Border>
     </Grid>
-</winuiex:WindowEx>
+</winuiex:WindowEx>

src/modules/powerdisplay/PowerDisplay/PowerDisplayXAML/MainWindow.xaml.cs

@@ -250,17 +250,14 @@ namespace PowerDisplay
         private void OnUIRefreshRequested(object? sender, EventArgs e)
         {
             // Adjust window size when UI configuration changes (feature visibility toggles)
-            DispatcherQueue.TryEnqueue(() => AdjustWindowSizeToContent());
+            QueueWindowSizeAdjustment();
         }
 
         private void OnMonitorsCollectionChanged(object? sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
         {
             // Adjust window size when monitors collection changes (event-driven!)
             // The UI binding will update first, then we adjust size
-            DispatcherQueue.TryEnqueue(Microsoft.UI.Dispatching.DispatcherQueuePriority.Low, () =>
-            {
-                AdjustWindowSizeToContent();
-            });
+            QueueWindowSizeAdjustment();
         }
 
         private void OnViewModelPropertyChanged(object? sender, System.ComponentModel.PropertyChangedEventArgs e)
@@ -268,16 +265,28 @@ namespace PowerDisplay
             // Adjust window size when relevant properties change (event-driven!)
             if (e.PropertyName == nameof(_viewModel.IsScanning) ||
                 e.PropertyName == nameof(_viewModel.HasMonitors) ||
-                e.PropertyName == nameof(_viewModel.ShowNoMonitorsMessage))
+                e.PropertyName == nameof(_viewModel.ShowNoMonitorsMessage) ||
+                e.PropertyName == nameof(_viewModel.LinkedLevelsActive) ||
+                e.PropertyName == nameof(_viewModel.IndividualDisplaysExpanded) ||
+                e.PropertyName == nameof(_viewModel.ShowIndividualDisplays) ||
+                e.PropertyName == nameof(_viewModel.ShowLinkLevelsToggle) ||
+                e.PropertyName == nameof(_viewModel.LinkedMonitorsCount) ||
+                e.PropertyName == nameof(_viewModel.LinkedMonitorsCountText) ||
+                e.PropertyName == nameof(_viewModel.ExcludedMonitorsCount) ||
+                e.PropertyName == nameof(_viewModel.ExcludedMonitorsCountText) ||
+                e.PropertyName == nameof(_viewModel.HasExcludedMonitors) ||
+                e.PropertyName == nameof(_viewModel.IsLinkedBrightnessAvailable))
             {
-                // Use Low priority to ensure UI bindings update first
-                DispatcherQueue.TryEnqueue(Microsoft.UI.Dispatching.DispatcherQueuePriority.Low, () =>
-                {
-                    AdjustWindowSizeToContent();
-                });
+                QueueWindowSizeAdjustment();
             }
         }
 
+        private void QueueWindowSizeAdjustment()
+        {
+            // Use Low priority to ensure x:Bind visibility/layout updates land before measuring.
+            DispatcherQueue.TryEnqueue(Microsoft.UI.Dispatching.DispatcherQueuePriority.Low, AdjustWindowSizeToContent);
+        }
+
         private void OnRefreshClick(object sender, RoutedEventArgs e)
         {
             try
@@ -368,17 +377,29 @@ namespace PowerDisplay
                     return;
                 }
 
+                var maxHeightDip = GetAdaptiveWindowMaxHeightDip();
+                if (MainScrollViewer != null)
+                {
+                    MainScrollViewer.MaxHeight = double.PositiveInfinity;
+                }
+
                 // Force layout update and measure content height
                 RootGrid.UpdateLayout();
                 MainContainer?.Measure(new Windows.Foundation.Size(AppConstants.UI.WindowWidthDip, double.PositiveInfinity));
                 var contentHeight = (int)Math.Ceiling(MainContainer?.DesiredSize.Height ?? 0);
-                var maxHeightDip = GetAdaptiveWindowMaxHeightDip();
 
                 // Apply min/max height limits and reposition using DIP values.
                 // Min height ensures window is visible even if content hasn't loaded yet
-                var finalHeightDip = Math.Min(contentHeight, maxHeightDip);
+                var finalHeightDip = Math.Max(AppConstants.UI.WindowMinHeightDip, Math.Min(contentHeight, maxHeightDip));
                 Logger.LogTrace($"AdjustWindowSizeToContent: contentHeight={contentHeight}, maxHeightDip={maxHeightDip}, finalHeightDip={finalHeightDip}");
 
+                if (MainScrollViewer != null)
+                {
+                    var statusBarHeight = StatusBar?.ActualHeight > 0 ? StatusBar.ActualHeight : 48;
+                    MainScrollViewer.MaxHeight = Math.Max(0, maxHeightDip - statusBarHeight);
+                    RootGrid.UpdateLayout();
+                }
+
                 // FlyoutWindowHelper handles cross-monitor DPI internally via a 1×1 teleport
                 // before the final move, so no WM_DPICHANGED suppression is required here.
                 FlyoutWindowHelper.PositionWindowBottomRight(

src/modules/powerdisplay/PowerDisplay/Strings/en-us/Resources.resw

@@ -197,6 +197,43 @@
   <data name="ProfilesTooltip.ToolTipService.ToolTip" xml:space="preserve">
     <value>Profiles</value>
   </data>
+  <data name="LinkLevelsToggle.[using:Microsoft.UI.Xaml.Automation]AutomationProperties.Name" xml:space="preserve">
+    <value>Link brightness levels</value>
+  </data>
+  <data name="LinkLevelsToggle.ToolTipService.ToolTip" xml:space="preserve">
+    <value>Link brightness across monitors</value>
+  </data>
+  <data name="AllDisplaysTitle.Text" xml:space="preserve">
+    <value>All displays</value>
+    <comment>Title of the card that controls brightness for all linked monitors at once</comment>
+  </data>
+  <data name="AllDisplaysBrightnessAutomation.[using:Microsoft.UI.Xaml.Automation]AutomationProperties.Name" xml:space="preserve">
+    <value>All displays brightness</value>
+  </data>
+  <data name="AllDisplaysLinkedCountFormat" xml:space="preserve">
+    <value>{0} linked</value>
+    <comment>Subtitle on the All displays card. {0} is the number of monitors whose brightness is linked</comment>
+  </data>
+  <data name="AllDisplaysExcludedCountFormat" xml:space="preserve">
+    <value>{0} excluded</value>
+    <comment>Subtitle on the All displays card. {0} is the number of monitors excluded from linked brightness</comment>
+  </data>
+  <data name="IndividualDisplaysHeader.Text" xml:space="preserve">
+    <value>Individual displays</value>
+    <comment>Header for the collapsible section listing each monitor while link mode is on</comment>
+  </data>
+  <data name="IndividualDisplaysToggle.[using:Microsoft.UI.Xaml.Automation]AutomationProperties.Name" xml:space="preserve">
+    <value>Individual displays</value>
+  </data>
+  <data name="ExcludeFromSyncToggle.[using:Microsoft.UI.Xaml.Automation]AutomationProperties.Name" xml:space="preserve">
+    <value>Exclude from linked brightness</value>
+  </data>
+  <data name="ExcludeFromSyncToggleToolTip" xml:space="preserve">
+    <value>Brightness is controlled by linked mode.</value>
+  </data>
+  <data name="IncludeInSyncToggleToolTip" xml:space="preserve">
+    <value>Include this display in linked brightness</value>
+  </data>
   <data name="IdentifyText.Text" xml:space="preserve">
     <value>Identify monitors</value>
   </data>
@@ -221,4 +258,4 @@
   <data name="ColorTemperatureHeader.Text" xml:space="preserve">
     <value>Color temperature</value>
   </data>
-</root>
+</root>

src/modules/powerdisplay/PowerDisplay/ViewModels/MainViewModel.LinkedBrightness.cs

@@ -0,0 +1,281 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using ManagedCommon;
+using Microsoft.UI.Dispatching;
+using PowerDisplay.Common.Services;
+using PowerDisplay.Helpers;
+
+namespace PowerDisplay.ViewModels;
+
+/// <summary>
+/// MainViewModel — linked-brightness behavior: toggle side effects, initial value,
+/// per-monitor exclusion set, debounced broadcast across linked monitors.
+/// </summary>
+public partial class MainViewModel
+{
+    // Monitor Ids (Monitor.Id form) the user has excluded from linked brightness. An excluded
+    // monitor keeps its own slider while link mode is on. Authoritative runtime copy of
+    // PowerDisplayProperties.ExcludedFromSyncMonitorIds; loaded by LoadExcludedMonitorIds and
+    // persisted by SaveExcludedMonitorIds. Monitors not in this set are linked by default.
+    private readonly HashSet<string> _excludedMonitorIds = new(StringComparer.OrdinalIgnoreCase);
+
+    // Set while the toggle handler is seeding the initial LinkedBrightness value
+    // so OnLinkedBrightnessChanged does not treat the seed as a user-driven change
+    // and schedule a broadcast — the design promise is "no auto-write on toggle ON".
+    private bool _suppressLinkedBrightnessBroadcast;
+
+    private DispatcherQueueTimer? _linkedBrightnessCommitTimer;
+
+    /// <summary>
+    /// Returns true when the monitor is currently driven by linked brightness — it supports
+    /// brightness and the user has not excluded it. This mirrors the planner's linked-target rule
+    /// for live ViewModels on the broadcast and optimistic-update hot paths.
+    /// </summary>
+    private bool IsLinkedTarget(MonitorViewModel monitor) =>
+        monitor.SupportsBrightness && !_excludedMonitorIds.Contains(monitor.Id);
+
+    /// <summary>
+    /// Snapshot the currently included brightness-capable monitors as
+    /// <see cref="LinkedBrightnessPlanner.LinkTarget"/> values for seed decisions.
+    /// </summary>
+    private List<LinkedBrightnessPlanner.LinkTarget> BuildLinkTargets() =>
+        Monitors.Where(IsLinkedTarget)
+            .Select(m => new LinkedBrightnessPlanner.LinkTarget(
+            m.Id,
+            m.MonitorNumber,
+            m.Brightness))
+            .ToList();
+
+    /// <summary>
+    /// Gets whether the given monitor Id is excluded from linked brightness. Queried by
+    /// <see cref="MonitorViewModel.IsExcludedFromSync"/> so each card reflects the shared set.
+    /// </summary>
+    internal bool IsMonitorExcludedFromSync(string monitorId) => _excludedMonitorIds.Contains(monitorId);
+
+    /// <summary>
+    /// Add or remove a monitor from the linked-brightness exclusion set, persist the change, and
+    /// refresh the "N linked" summary. When a monitor is brought back into an existing linked set
+    /// (<paramref name="excluded"/> = false) while link mode is on, re-broadcast so it snaps to
+    /// the current master level. If it is the first linked target, seed the master slider from it
+    /// instead. Excluding a monitor does not write hardware: it simply stops following the group.
+    /// </summary>
+    internal void SetMonitorExcludedFromSync(string monitorId, bool excluded)
+    {
+        var hadLinkedTarget = Monitors.Any(IsLinkedTarget);
+        var changed = excluded
+            ? _excludedMonitorIds.Add(monitorId)
+            : _excludedMonitorIds.Remove(monitorId);
+
+        if (!changed)
+        {
+            return;
+        }
+
+        SaveExcludedMonitorIds();
+
+        // Excluding can empty the linked set (slider must disable); including can refill it.
+        IsLinkedBrightnessAvailable = Monitors.Any(IsLinkedTarget);
+        OnPropertyChanged(nameof(LinkedMonitorsCount));
+        OnPropertyChanged(nameof(LinkedMonitorsCountText));
+        OnPropertyChanged(nameof(ExcludedMonitorsCount));
+        OnPropertyChanged(nameof(ExcludedMonitorsCountText));
+        OnPropertyChanged(nameof(HasExcludedMonitors));
+
+        if (!excluded && LinkedLevelsActive)
+        {
+            if (hadLinkedTarget)
+            {
+                ScheduleLinkedBrightnessCommit();
+            }
+            else
+            {
+                SeedInitialLinkedBrightness();
+            }
+        }
+    }
+
+    /// <summary>
+    /// Replace the runtime exclusion set from persisted settings. Called by LoadUIDisplaySettings
+    /// before monitor discovery so cards read the correct excluded state on first render.
+    /// </summary>
+    internal void LoadExcludedMonitorIds(IEnumerable<string>? excludedIds)
+    {
+        _excludedMonitorIds.Clear();
+        if (excludedIds == null)
+        {
+            return;
+        }
+
+        foreach (var id in excludedIds)
+        {
+            if (!string.IsNullOrEmpty(id))
+            {
+                _excludedMonitorIds.Add(id);
+            }
+        }
+    }
+
+    /// <summary>
+    /// Partial change hook fired by the source-generator for <see cref="LinkedLevelsActive"/>.
+    /// Persists the new value to settings.json and, on transition to ON, seeds the
+    /// linked-brightness slider with an initial value drawn from the connected monitors.
+    /// </summary>
+    partial void OnLinkedLevelsActiveChanged(bool value)
+    {
+        SaveLinkedLevelsActive(value);
+
+        if (value)
+        {
+            // Entering linked mode starts with the individual cards collapsed so the master
+            // slider is the focus; the user can expand to reach per-display settings.
+            IndividualDisplaysExpanded = false;
+            SeedInitialLinkedBrightness();
+        }
+        else
+        {
+            // Drop any pending master-slider write. Once the user turns linked mode off, the
+            // delayed broadcast from the previous linked slider gesture should not still run.
+            _linkedBrightnessCommitTimer?.Stop();
+        }
+    }
+
+    /// <summary>
+    /// Partial change hook fired by the source-generator for <see cref="LinkedBrightness"/>.
+    /// Optimistically updates every linked monitor's brightness value to match the master value
+    /// that will be broadcast to hardware, so it is correct if the monitor is later excluded or
+    /// link mode is disabled. Then schedules a debounced hardware broadcast. Suppressed during
+    /// initial-value seeding so turning the toggle on does not auto-write hardware.
+    /// </summary>
+    partial void OnLinkedBrightnessChanged(int value)
+    {
+        if (_suppressLinkedBrightnessBroadcast)
+        {
+            return;
+        }
+
+        if (!LinkedLevelsActive)
+        {
+            return;
+        }
+
+        // Keep linked monitor VMs aligned with the master value without per-VM commits. The row is
+        // usually covered by the linked-mode hint, but the backing value should be correct if the
+        // monitor is later excluded or link mode is disabled.
+        foreach (var vm in Monitors)
+        {
+            if (IsLinkedTarget(vm))
+            {
+                vm.UpdateBrightnessDisplay(value);
+            }
+        }
+
+        ScheduleLinkedBrightnessCommit();
+    }
+
+    /// <summary>
+    /// Seeds <see cref="LinkedBrightness"/> with the initial value used to position the master
+    /// slider when link mode turns on, via <see cref="LinkedBrightnessPlanner.Seed"/> (lowest
+    /// DISPLAY number, then deterministic fallback). The seed is positional only: it is never
+    /// written to hardware (the suppress flag gates <see cref="OnLinkedBrightnessChanged"/>), so
+    /// the first user gesture is the first broadcast.
+    /// </summary>
+    private void SeedInitialLinkedBrightness()
+    {
+        var seed = LinkedBrightnessPlanner.Seed(BuildLinkTargets());
+        IsLinkedBrightnessAvailable = seed.HasValue;
+        if (seed.HasValue)
+        {
+            SetLinkedBrightnessSilently(seed.Value);
+        }
+    }
+
+    /// <summary>
+    /// Set <see cref="LinkedBrightness"/> without triggering a hardware broadcast — used for
+    /// positioning the master slider during seeding.
+    /// </summary>
+    private void SetLinkedBrightnessSilently(int value)
+    {
+        _suppressLinkedBrightnessBroadcast = true;
+        try
+        {
+            LinkedBrightness = value;
+        }
+        finally
+        {
+            _suppressLinkedBrightnessBroadcast = false;
+        }
+    }
+
+    /// <summary>
+    /// Recompute <see cref="IsLinkedBrightnessAvailable"/> and the linked-monitors count after a
+    /// monitor add/remove/refresh. Called from <c>UpdateMonitorList</c> so the master slider's
+    /// enabled state and "N linked" subtitle stay in sync with the live monitor set.
+    /// </summary>
+    internal void RecomputeLinkedBrightnessAvailability()
+    {
+        IsLinkedBrightnessAvailable = Monitors.Any(IsLinkedTarget);
+        OnPropertyChanged(nameof(LinkedMonitorsCount));
+        OnPropertyChanged(nameof(LinkedMonitorsCountText));
+        OnPropertyChanged(nameof(ExcludedMonitorsCount));
+        OnPropertyChanged(nameof(ExcludedMonitorsCountText));
+        OnPropertyChanged(nameof(HasExcludedMonitors));
+
+        if (LinkedLevelsActive)
+        {
+            SeedInitialLinkedBrightness();
+        }
+    }
+
+    private void ScheduleLinkedBrightnessCommit()
+    {
+        SliderCommitScheduler.Schedule(
+            ref _linkedBrightnessCommitTimer,
+            _dispatcherQueue,
+            () => BroadcastLinkedBrightnessAsync(LinkedBrightness));
+    }
+
+    /// <summary>
+    /// Drop a queued linked-brightness hardware write. Used when the monitor topology is changing,
+    /// so a delayed commit from the previous topology cannot apply to a newly discovered target set.
+    /// </summary>
+    private void CancelPendingLinkedBrightnessCommit()
+    {
+        _linkedBrightnessCommitTimer?.Stop();
+    }
+
+    /// <summary>
+    /// Broadcast the linked brightness value to every linked target via
+    /// <see cref="MonitorViewModel.SetBrightnessAsync"/>. Each per-VM call already wraps hardware
+    /// errors in its own try/catch, so a single failing monitor does not break the others.
+    /// </summary>
+    private async Task BroadcastLinkedBrightnessAsync(int value)
+    {
+        if (!LinkedLevelsActive)
+        {
+            return;
+        }
+
+        try
+        {
+            var writes = Monitors
+                .Where(IsLinkedTarget)
+                .Select(m => m.SetBrightnessAsync(value))
+                .ToList();
+
+            if (writes.Count > 0)
+            {
+                await Task.WhenAll(writes);
+            }
+        }
+        catch (Exception ex)
+        {
+            Logger.LogError($"[LinkedBrightness] Broadcast failed: {ex.Message}");
+        }
+    }
+}

src/modules/powerdisplay/PowerDisplay/ViewModels/MainViewModel.Monitors.cs

@@ -108,6 +108,7 @@ public partial class MainViewModel
 
         try
         {
+            CancelPendingLinkedBrightnessCommit();
             IsScanning = true;
 
             var settings = _settingsUtils.GetSettingsOrDefault<PowerDisplaySettings>(PowerDisplaySettings.ModuleName);
@@ -133,6 +134,8 @@ public partial class MainViewModel
 
     private void UpdateMonitorList(IReadOnlyList<Monitor> monitors, bool isInitialLoad)
     {
+        CancelPendingLinkedBrightnessCommit();
+
         // Dispose old ViewModels to unsubscribe PropertyChanged handlers
         foreach (var vm in Monitors)
         {
@@ -160,6 +163,8 @@ public partial class MainViewModel
 
         OnPropertyChanged(nameof(HasMonitors));
         OnPropertyChanged(nameof(ShowNoMonitorsMessage));
+        OnPropertyChanged(nameof(ShowLinkLevelsToggle));
+        RecomputeLinkedBrightnessAvailability();
 
         // Save monitor information to settings
         SaveMonitorsToSettings();

src/modules/powerdisplay/PowerDisplay/ViewModels/MainViewModel.Settings.cs

@@ -25,6 +25,55 @@ namespace PowerDisplay.ViewModels;
 /// </summary>
 public partial class MainViewModel
 {
+    /// <summary>
+    /// Persist the link-levels toggle state to settings.json. Called from
+    /// <c>OnLinkedLevelsActiveChanged</c> in <c>MainViewModel.LinkedBrightness.cs</c>
+    /// (which owns the source-generator hook plus the broadcast/seed side effects).
+    /// </summary>
+    private void SaveLinkedLevelsActive(bool value)
+    {
+        try
+        {
+            var settings = _settingsUtils.GetSettingsOrDefault<PowerDisplaySettings>(PowerDisplaySettings.ModuleName);
+            if (settings.Properties.LinkedLevelsActive == value)
+            {
+                return;
+            }
+
+            settings.Properties.LinkedLevelsActive = value;
+
+            _settingsUtils.SaveSettings(
+                System.Text.Json.JsonSerializer.Serialize(settings, AppJsonContext.Default.PowerDisplaySettings),
+                PowerDisplaySettings.ModuleName);
+        }
+        catch (Exception ex)
+        {
+            Logger.LogError($"[Settings] Failed to save LinkedLevelsActive: {ex.Message}");
+        }
+    }
+
+    /// <summary>
+    /// Persist the linked-brightness exclusion set to settings.json. Called from
+    /// <c>SetMonitorExcludedFromSync</c> in <c>MainViewModel.LinkedBrightness.cs</c> after the
+    /// runtime <c>_excludedMonitorIds</c> set has been mutated.
+    /// </summary>
+    private void SaveExcludedMonitorIds()
+    {
+        try
+        {
+            var settings = _settingsUtils.GetSettingsOrDefault<PowerDisplaySettings>(PowerDisplaySettings.ModuleName);
+            settings.Properties.ExcludedFromSyncMonitorIds = _excludedMonitorIds.ToList();
+
+            _settingsUtils.SaveSettings(
+                System.Text.Json.JsonSerializer.Serialize(settings, AppJsonContext.Default.PowerDisplaySettings),
+                PowerDisplaySettings.ModuleName);
+        }
+        catch (Exception ex)
+        {
+            Logger.LogError($"[Settings] Failed to save ExcludedFromSyncMonitorIds: {ex.Message}");
+        }
+    }
+
     private static void TryRestore(
         List<Task> tasks,
         int? savedValue,
@@ -208,10 +257,17 @@ public partial class MainViewModel
     }
 
     /// <summary>
-    /// Apply profile settings to monitors
+    /// Apply profile settings to monitors. Profiles are per-monitor snapshots, so applying one
+    /// turns off linked brightness before writing individual monitor values.
     /// </summary>
     private async Task ApplyProfileAsync(List<ProfileMonitorSetting> monitorSettings)
     {
+        if (LinkedLevelsActive)
+        {
+            Logger.LogInfo("[Profile] Disabling linked brightness before applying per-monitor profile values");
+            LinkedLevelsActive = false;
+        }
+
         var updateTasks = new List<Task>();
 
         foreach (var setting in monitorSettings)

src/modules/powerdisplay/PowerDisplay/ViewModels/MainViewModel.cs

@@ -53,6 +53,7 @@ public partial class MainViewModel : ObservableObject, IDisposable
     [NotifyPropertyChangedFor(nameof(HasMonitors))]
     [NotifyPropertyChangedFor(nameof(ShowNoMonitorsMessage))]
     [NotifyPropertyChangedFor(nameof(IsInteractionEnabled))]
+    [NotifyPropertyChangedFor(nameof(IsLinkedBrightnessSliderEnabled))]
     public partial bool IsScanning { get; set; }
 
     private bool _isInitialized;
@@ -128,6 +129,113 @@ public partial class MainViewModel : ObservableObject, IDisposable
     [ObservableProperty]
     public partial bool ShowIdentifyMonitorsButton { get; set; }
 
+    /// <summary>
+    /// Gets or sets a value indicating whether brightness slider changes are broadcast to all
+    /// non-excluded monitors as one linked level. Persisted in <c>PowerDisplaySettings</c> so
+    /// the choice survives restarts. The toggle is meaningful only when two or more monitors
+    /// are connected — see <see cref="ShowLinkLevelsToggle"/> for the visibility gate.
+    /// </summary>
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowIndividualDisplays))]
+    [NotifyPropertyChangedFor(nameof(ShowLinkLevelsToggle))]
+    [NotifyPropertyChangedFor(nameof(ShowLinkLevelsInactiveIcon))]
+    public partial bool LinkedLevelsActive { get; set; }
+
+    /// <summary>
+    /// Gets or sets the brightness value driving the linked "All Displays" slider. Setter is
+    /// debounced and broadcasts on commit to every linked target: a
+    /// <see cref="MonitorViewModel.SupportsBrightness"/> monitor not excluded from sync (see
+    /// <c>OnLinkedBrightnessChanged</c>). Synchronously updates each linked monitor's brightness
+    /// value so it is correct if the monitor is later excluded or link mode is disabled — the
+    /// linked broadcast is the single source of hardware writes while link mode is active.
+    /// </summary>
+    [ObservableProperty]
+    public partial int LinkedBrightness { get; set; }
+
+    /// <summary>
+    /// Gets a value indicating whether the linked brightness slider has at least one linked
+    /// brightness-capable monitor to control.
+    /// </summary>
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(IsLinkedBrightnessSliderEnabled))]
+    public partial bool IsLinkedBrightnessAvailable { get; set; }
+
+    /// <summary>
+    /// Gets a value indicating whether the linked "All Displays" brightness slider accepts input.
+    /// Disabled both when no linked target is available and while monitor discovery/restore is busy.
+    /// </summary>
+    public bool IsLinkedBrightnessSliderEnabled => IsLinkedBrightnessAvailable && IsInteractionEnabled;
+
+    /// <summary>
+    /// Gets the count of monitors that participate in linked brightness — used for the
+    /// "All Displays" card subtitle ("N linked"). Counts brightness-capable monitors the user
+    /// has not excluded (see <see cref="MonitorViewModel.IsExcludedFromSync"/>).
+    /// </summary>
+    public int LinkedMonitorsCount => Monitors.Count(m => m.SupportsBrightness && !IsMonitorExcludedFromSync(m.Id));
+
+    /// <summary>
+    /// Gets the count of brightness-capable monitors excluded from linked brightness.
+    /// </summary>
+    public int ExcludedMonitorsCount => Monitors.Count(m => m.SupportsBrightness && IsMonitorExcludedFromSync(m.Id));
+
+    /// <summary>
+    /// Gets a value indicating whether the "N excluded" subtitle fragment should be visible on
+    /// the "All displays" card.
+    /// </summary>
+    public bool HasExcludedMonitors => ExcludedMonitorsCount > 0;
+
+    /// <summary>
+    /// Gets the localized "N linked" subtitle shown on the "All Displays" card. Recomputed
+    /// alongside <see cref="LinkedMonitorsCount"/> via <c>RecomputeLinkedBrightnessAvailability</c>.
+    /// </summary>
+    public string LinkedMonitorsCountText =>
+        string.Format(
+            System.Globalization.CultureInfo.CurrentCulture,
+            Helpers.ResourceLoaderInstance.ResourceLoader.GetString("AllDisplaysLinkedCountFormat"),
+            LinkedMonitorsCount);
+
+    /// <summary>
+    /// Gets the localized "N excluded" subtitle fragment shown on the "All Displays" card.
+    /// </summary>
+    public string ExcludedMonitorsCountText =>
+        string.Format(
+            System.Globalization.CultureInfo.CurrentCulture,
+            Helpers.ResourceLoaderInstance.ResourceLoader.GetString("AllDisplaysExcludedCountFormat"),
+            ExcludedMonitorsCount);
+
+    /// <summary>
+    /// Gets or sets a value indicating whether the "Individual displays" section is expanded
+    /// while link mode is on. Collapsed by default so linked mode reads as a single master
+    /// slider; expanding reveals the per-monitor cards (with linked monitors' sliders disabled).
+    /// Ignored when link mode is off — see <see cref="ShowIndividualDisplays"/>.
+    /// </summary>
+    [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowIndividualDisplays))]
+    [NotifyPropertyChangedFor(nameof(ShowIndividualDisplaysCollapsedIcon))]
+    public partial bool IndividualDisplaysExpanded { get; set; }
+
+    /// <summary>
+    /// Gets a value indicating whether the per-monitor cards list is shown. Always shown when
+    /// link mode is off (the classic layout); when link mode is on the cards are tucked into the
+    /// collapsible "Individual displays" section and only shown once the user expands it.
+    /// </summary>
+    public bool ShowIndividualDisplays => !LinkedLevelsActive || IndividualDisplaysExpanded;
+
+    public bool ShowIndividualDisplaysCollapsedIcon => !IndividualDisplaysExpanded;
+
+    /// <summary>
+    /// Gets a value indicating whether the link-levels toggle should be visible. Shown when at
+    /// least two monitors report <see cref="MonitorViewModel.SupportsBrightness"/> (the entry-point
+    /// gate — counting raw entries would show the toggle even when only one display can actually be
+    /// driven), OR whenever link mode is already active. The second clause guarantees the user can
+    /// always turn link mode back off, even if monitors were unplugged down to one controllable
+    /// display while linked — otherwise the "All displays" card would strand them with no way out.
+    /// Recomputed by <see cref="UpdateMonitorList"/> and on <see cref="LinkedLevelsActive"/> change.
+    /// </summary>
+    public bool ShowLinkLevelsToggle => LinkedLevelsActive || Monitors.Count(m => m.SupportsBrightness) >= 2;
+
+    public bool ShowLinkLevelsInactiveIcon => !LinkedLevelsActive;
+
     /// <summary>
     /// Gets a value indicating whether to show the profile switcher button.
     /// Combines settings value with HasProfiles check.
@@ -173,6 +281,7 @@ public partial class MainViewModel : ObservableObject, IDisposable
             _isLoading = value;
             OnPropertyChanged();
             OnPropertyChanged(nameof(IsInteractionEnabled));
+            OnPropertyChanged(nameof(IsLinkedBrightnessSliderEnabled));
         }
     }
 
@@ -266,6 +375,16 @@ public partial class MainViewModel : ObservableObject, IDisposable
         // Cancel all async operations first
         _cancellationTokenSource?.Cancel();
 
+        // Stop the linked-brightness debounce timer so its Tick handler does not fire after
+        // we have already cleared Monitors below (broadcast would iterate an empty list).
+        try
+        {
+            _linkedBrightnessCommitTimer?.Stop();
+        }
+        catch
+        {
+        }
+
         // Dispose each resource independently to ensure all get cleaned up
         try
         {
@@ -361,6 +480,13 @@ public partial class MainViewModel : ObservableObject, IDisposable
             ShowProfileSwitcher = settings.Properties.ShowProfileSwitcher;
             ShowIdentifyMonitorsButton = settings.Properties.ShowIdentifyMonitorsButton;
 
+            // Load the linked-brightness exclusion set before applying LinkedLevelsActive. If this
+            // method runs after monitors are already discovered, the toggle hook can seed the master
+            // slider immediately and must see the persisted exclusions.
+            LoadExcludedMonitorIds(settings.Properties.ExcludedFromSyncMonitorIds);
+
+            LinkedLevelsActive = settings.Properties.LinkedLevelsActive;
+
             // Load custom VCP mappings (now using shared type from PowerDisplay.Common.Models)
             CustomVcpMappings = settings.Properties.CustomVcpMappings?.ToList() ?? new List<CustomVcpValueMapping>();
             Logger.LogInfo($"[Settings] Loaded {CustomVcpMappings.Count} custom VCP mappings");
@@ -381,6 +507,8 @@ public partial class MainViewModel : ObservableObject, IDisposable
     /// </summary>
     private void OnDisplayChanging(object? sender, EventArgs e)
     {
+        CancelPendingLinkedBrightnessCommit();
+
         if (!IsScanning)
         {
             Logger.LogInfo("[MainViewModel] Display change detected — locking UI ahead of rediscovery");

src/modules/powerdisplay/PowerDisplay/ViewModels/MonitorViewModel.cs

@@ -50,6 +50,7 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
 
     // Visibility settings (controlled by Settings UI)
     [ObservableProperty]
+    [NotifyPropertyChangedFor(nameof(ShowBrightnessSlider))]
     public partial bool ShowBrightness { get; set; }
 
     [ObservableProperty]
@@ -85,7 +86,6 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
             OnPropertyChanged(nameof(Brightness));
         }
 
-        // Apply to hardware
         await ApplyPropertyToHardwareAsync(nameof(Brightness), brightness, _monitorManager.SetBrightnessAsync);
     }
 
@@ -180,7 +180,7 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
     /// <param name="propertyName">Name of the property being set (for logging and state persistence)</param>
     /// <param name="value">Value to apply</param>
     /// <param name="setAsyncFunc">Async function to call on MonitorManager</param>
-    private async Task ApplyPropertyToHardwareAsync(
+    private async Task<bool> ApplyPropertyToHardwareAsync(
         string propertyName,
         int value,
         Func<string, int, CancellationToken, Task<MonitorOperationResult>> setAsyncFunc)
@@ -192,6 +192,7 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
             if (result.IsSuccess)
             {
                 _mainViewModel?.SaveMonitorSettingDirect(_monitor.Id, propertyName, value);
+                return true;
             }
             else
             {
@@ -202,6 +203,8 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
         {
             Logger.LogError($"[{Id}] Exception setting {propertyName.ToLowerInvariant()}: {ex.Message}");
         }
+
+        return false;
     }
 
     // Property to access IsInteractionEnabled from parent ViewModel
@@ -299,6 +302,64 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
 
     public bool SupportsBrightness => _monitor.SupportsBrightness;
 
+    /// <summary>
+    /// Gets a value indicating whether this monitor's brightness is currently driven by linked
+    /// mode rather than its own slider. True when the parent has link mode on, this monitor
+    /// supports brightness, and the user has not excluded it. When true the per-card brightness
+    /// row shows a disabled linked-mode hint — the "All Displays" master slider broadcasts the
+    /// value instead.
+    /// </summary>
+    public bool IsBrightnessLinked => (_mainViewModel?.LinkedLevelsActive ?? false) && SupportsBrightness && !IsExcludedFromSync;
+
+    /// <summary>
+    /// Gets a value indicating whether the per-card brightness slider accepts input. Disabled both
+    /// while the app is busy (<see cref="IsInteractionEnabled"/>) and while link mode owns this
+    /// monitor's brightness (<see cref="IsBrightnessLinked"/>). Excluded monitors keep an active
+    /// slider, so this is true for them whenever interaction is enabled.
+    /// </summary>
+    public bool IsBrightnessSliderEnabled => IsInteractionEnabled && !IsBrightnessLinked;
+
+    public bool ShowBrightnessSlider => ShowBrightness && !IsBrightnessLinked;
+
+    public bool ShowIncludedInSyncIcon => !IsExcludedFromSync;
+
+    /// <summary>
+    /// Gets or sets a value indicating whether this monitor is excluded from linked brightness.
+    /// Backed by the parent's shared exclusion set (keyed by <see cref="Id"/>), so the state
+    /// survives monitor-list rebuilds and is persisted to settings.json. An excluded monitor keeps
+    /// its own independent brightness slider while link mode is on.
+    /// </summary>
+    public bool IsExcludedFromSync
+    {
+        get => _mainViewModel?.IsMonitorExcludedFromSync(Id) ?? false;
+        set
+        {
+            if (IsExcludedFromSync != value)
+            {
+                _mainViewModel?.SetMonitorExcludedFromSync(Id, value);
+                OnPropertyChanged();
+                OnPropertyChanged(nameof(IsBrightnessLinked));
+                OnPropertyChanged(nameof(IsBrightnessSliderEnabled));
+                OnPropertyChanged(nameof(ShowBrightnessSlider));
+                OnPropertyChanged(nameof(ShowIncludedInSyncIcon));
+                OnPropertyChanged(nameof(SyncToggleToolTip));
+            }
+        }
+    }
+
+    /// <summary>
+    /// Gets a value indicating whether the per-card exclude toggle is shown. Only relevant while
+    /// link mode is on and the monitor supports brightness — otherwise exclusion has no effect.
+    /// </summary>
+    public bool ShowExcludeButton => (_mainViewModel?.LinkedLevelsActive ?? false) && SupportsBrightness;
+
+    /// <summary>
+    /// Gets the tooltip for the per-card linked-brightness toggle. The action reverses with the
+    /// current exclusion state: linked monitors can be excluded, excluded monitors can be included.
+    /// </summary>
+    public string SyncToggleToolTip => ResourceLoaderInstance.ResourceLoader.GetString(
+        IsExcludedFromSync ? "IncludeInSyncToggleToolTip" : "ExcludeFromSyncToggleToolTip");
+
     /// <summary>
     /// Gets a value indicating whether this monitor supports volume control via VCP 0x62
     /// </summary>
@@ -426,6 +487,24 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
         }
     }
 
+    /// <summary>
+    /// Update the brightness backing field and notify the UI without scheduling a per-VM commit
+    /// or hardware write. Used by <c>MainViewModel.LinkedBrightness</c> to keep each linked
+    /// monitor's stored brightness aligned with the master value, so it is correct if the
+    /// monitor is later excluded or link mode is disabled. The master broadcast is the single
+    /// source of hardware writes while link mode is on, so this path must not schedule its own
+    /// debounced commit.
+    /// </summary>
+    public void UpdateBrightnessDisplay(int value)
+    {
+        value = Math.Clamp(value, 0, 100);
+        if (_brightness != value)
+        {
+            _brightness = value;
+            OnPropertyChanged(nameof(Brightness));
+        }
+    }
+
     /// <summary>
     /// Gets color temperature VCP preset value (from VCP code 0x14).
     /// Read-only in flyout UI - controlled via Settings UI.
@@ -681,8 +760,8 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
     }
 
     /// <summary>
-    /// Set power state for this monitor.
-    /// Note: Setting any state other than "On" will turn off the display.
+    /// Set the monitor's power state via VCP 0xD6: On (0x01) wakes the display,
+    /// Standby/Suspend/Off put it to sleep.
     /// </summary>
     public async Task SetPowerStateAsync(int powerState)
     {
@@ -712,18 +791,6 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
         }
     }
 
-    /// <summary>
-    /// Command to set power state
-    /// </summary>
-    [RelayCommand]
-    private async Task SetPowerState(int? state)
-    {
-        if (state.HasValue)
-        {
-            await SetPowerStateAsync(state.Value);
-        }
-    }
-
     public int Contrast
     {
         get => _contrast;
@@ -784,12 +851,21 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
         if (e.PropertyName == nameof(MainViewModel.IsInteractionEnabled))
         {
             OnPropertyChanged(nameof(IsInteractionEnabled));
+            OnPropertyChanged(nameof(IsBrightnessSliderEnabled));
         }
         else if (e.PropertyName == nameof(MainViewModel.HasMonitors))
         {
             // Monitor count changed, update display name to show/hide number suffix
             OnPropertyChanged(nameof(DisplayName));
         }
+        else if (e.PropertyName == nameof(MainViewModel.LinkedLevelsActive))
+        {
+            // Link mode toggled — refresh the linked hint, exclude button, and slider state.
+            OnPropertyChanged(nameof(IsBrightnessLinked));
+            OnPropertyChanged(nameof(IsBrightnessSliderEnabled));
+            OnPropertyChanged(nameof(ShowBrightnessSlider));
+            OnPropertyChanged(nameof(ShowExcludeButton));
+        }
     }
 
     private void OnMonitorPropertyChanged(object? sender, PropertyChangedEventArgs e)
@@ -814,16 +890,7 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
     // reads the latest field at fire-time so intermediate values are coalesced.
     private void ScheduleCommit(ref DispatcherQueueTimer? timer, Func<Task> commit)
     {
-        if (timer == null)
-        {
-            timer = DispatcherQueue.GetForCurrentThread().CreateTimer();
-            timer.IsRepeating = false;
-            timer.Interval = TimeSpan.FromMilliseconds(AppConstants.UI.SliderCommitDebounceMs);
-            timer.Tick += (_, _) => _ = commit();
-        }
-
-        timer.Stop();
-        timer.Start();
+        SliderCommitScheduler.Schedule(ref timer, DispatcherQueue.GetForCurrentThread(), commit);
     }
 
     // Rotation button handlers — one per orientation to avoid Tag string parsing
@@ -880,11 +947,9 @@ public partial class MonitorViewModel : ObservableObject, IDisposable
             return;
         }
 
-        if (item.Value == PowerStateItem.PowerStateOn)
-        {
-            return;
-        }
-
+        // Send the selected state straight to the hardware. Selecting On (0x01) wakes a
+        // sleeping monitor: DDC/CI stays reachable in Standby/Suspend/Off(DPM), so the
+        // write turns the panel back on (Off(Hard)/0x05 may still need a physical wake).
         await SetPowerStateAsync(item.Value);
     }
 

src/modules/powerdisplay/PowerDisplay/ViewModels/PowerStateItem.cs

@@ -12,11 +12,6 @@ namespace PowerDisplay.ViewModels;
 /// </summary>
 public class PowerStateItem
 {
-    /// <summary>
-    /// VCP power mode value representing On state
-    /// </summary>
-    public const int PowerStateOn = 0x01;
-
     /// <summary>
     /// VCP value for this power state
     /// </summary>

src/settings-ui/Settings.UI.Library/PowerDisplayProperties.cs

@@ -24,6 +24,8 @@ namespace Microsoft.PowerToys.Settings.UI.Library
             ShowProfileSwitcher = true;
             ShowIdentifyMonitorsButton = true;
             MaxCompatibilityMode = false;
+            LinkedLevelsActive = false;
+            ExcludedFromSyncMonitorIds = new List<string>();
             CustomVcpMappings = new List<CustomVcpValueMapping>();
 
             // Note: saved_monitor_settings has been moved to monitor_state.json
@@ -79,6 +81,26 @@ namespace Microsoft.PowerToys.Settings.UI.Library
         [JsonPropertyName("show_identify_monitors_button")]
         public bool ShowIdentifyMonitorsButton { get; set; }
 
+        /// <summary>
+        /// Gets or sets a value indicating whether brightness slider changes are broadcast
+        /// to all connected monitors as a single linked level. When false (default), each
+        /// monitor's slider operates independently. The toggle is only meaningful when two
+        /// or more monitors are connected; the UI hides the entry point otherwise.
+        /// </summary>
+        [JsonPropertyName("linked_levels_active")]
+        public bool LinkedLevelsActive { get; set; }
+
+        /// <summary>
+        /// Gets or sets the set of monitor <c>Id</c> values excluded from linked brightness.
+        /// Keyed by <c>Monitor.Id</c> (the DevicePath-based identifier, unique per physical
+        /// device × port — the same key profiles use), so three identical monitors of the same
+        /// model are distinguished. An excluded monitor keeps its own independent brightness
+        /// slider while link mode is on. Monitors not present here are linked by default,
+        /// including newly connected ones.
+        /// </summary>
+        [JsonPropertyName("excluded_from_sync_monitor_ids")]
+        public List<string> ExcludedFromSyncMonitorIds { get; set; }
+
         /// <summary>
         /// Gets or sets custom VCP value name mappings shared across all monitors.
         /// Allows users to define custom names for color temperature presets and input sources.

src/settings-ui/Settings.UI.Library/ZoomItProperties.cs

@@ -103,6 +103,8 @@ namespace Microsoft.PowerToys.Settings.UI.Library
 
         public BoolProperty CaptureAudio { get; set; }
 
+        public BoolProperty NoiseCancellation { get; set; }
+
         public BoolProperty MicMonoMix { get; set; }
 
         public StringProperty MicrophoneDeviceId { get; set; }
@@ -117,6 +119,12 @@ namespace Microsoft.PowerToys.Settings.UI.Library
 
         public IntProperty WebcamShape { get; set; }
 
+        public IntProperty WebcamBackgroundMode { get; set; }
+
+        public StringProperty WebcamBackgroundImage { get; set; }
+
+        public IntProperty WebcamBrightness { get; set; }
+
         public BoolProperty RecordAspectRatio { get; set; }
 
         public BoolProperty BreakLockWorkstation { get; set; }

src/settings-ui/Settings.UI/SettingsXAML/Views/ZoomItPage.xaml

@@ -287,6 +287,12 @@
                             <tkcontrols:SettingsCard Name="ZoomItRecordCaptureAudio" ContentAlignment="Left">
                                 <CheckBox x:Uid="ZoomIt_Record_CaptureAudio" IsChecked="{x:Bind ViewModel.RecordCaptureAudio, Mode=TwoWay}" />
                             </tkcontrols:SettingsCard>
+                            <tkcontrols:SettingsCard
+                                Name="ZoomItRecordNoiseCancellation"
+                                ContentAlignment="Left"
+                                Visibility="{x:Bind ViewModel.RecordCaptureAudio, Mode=OneWay}">
+                                <CheckBox x:Uid="ZoomIt_Record_NoiseCancellation" IsChecked="{x:Bind ViewModel.RecordNoiseCancellation, Mode=TwoWay}" />
+                            </tkcontrols:SettingsCard>
                             <tkcontrols:SettingsCard
                                 Name="ZoomItRecordMicMonoMix"
                                 ContentAlignment="Left"
@@ -352,6 +358,35 @@
                                     <ComboBoxItem x:Uid="ZoomIt_Record_WebcamShape_Circle" />
                                 </ComboBox>
                             </tkcontrols:SettingsCard>
+                            <tkcontrols:SettingsCard
+                                Name="ZoomItRecordWebcamBackground"
+                                x:Uid="ZoomIt_Record_WebcamBackground"
+                                Visibility="{x:Bind ViewModel.WebcamOverlay, Mode=OneWay}">
+                                <ComboBox MinWidth="{StaticResource SettingActionControlMinWidth}" SelectedIndex="{x:Bind ViewModel.WebcamBackgroundMode, Mode=TwoWay}">
+                                    <ComboBoxItem x:Uid="ZoomIt_Record_WebcamBackground_None" />
+                                    <ComboBoxItem x:Uid="ZoomIt_Record_WebcamBackground_Blur" />
+                                    <ComboBoxItem x:Uid="ZoomIt_Record_WebcamBackground_Image" />
+                                </ComboBox>
+                            </tkcontrols:SettingsCard>
+                            <tkcontrols:SettingsCard
+                                Name="ZoomItRecordWebcamBrightness"
+                                x:Uid="ZoomIt_Record_WebcamBrightness"
+                                Visibility="{x:Bind ViewModel.WebcamOverlay, Mode=OneWay}">
+                                <Slider
+                                    MinWidth="{StaticResource SettingActionControlMinWidth}"
+                                    Maximum="100"
+                                    Minimum="0"
+                                    TickFrequency="10"
+                                    TickPlacement="Outside"
+                                    Value="{x:Bind ViewModel.WebcamBrightness, Mode=TwoWay}" />
+                            </tkcontrols:SettingsCard>
+                            <tkcontrols:SettingsCard
+                                Name="ZoomItRecordWebcamBackgroundImage"
+                                x:Uid="ZoomIt_Record_WebcamBackgroundImage"
+                                Description="{x:Bind ViewModel.WebcamBackgroundImage, Mode=OneWay}"
+                                Visibility="{x:Bind ViewModel.WebcamBackgroundIsImage, Mode=OneWay}">
+                                <Button x:Uid="ZoomIt_Record_WebcamBackgroundImage_BrowseButton" Command="{x:Bind ViewModel.SelectWebcamBackgroundImageCommand, Mode=OneWay}" />
+                            </tkcontrols:SettingsCard>
                             <tkcontrols:SettingsCard>
                                 <tkcontrols:SettingsCard.Description>
                                     <StackPanel Orientation="Vertical" Spacing="4">