Add new VideoConference module for muting mic/cam (#11798)

* add new VideoConference module for muting mic/cam

Co-authored-by: PrzemyslawTusinski <61138537+PrzemyslawTusinski@users.noreply.github.com>
Co-authored-by: Niels Laute <niels.laute@live.nl>

src/common/SettingsAPI/FileWatcher.cpp

@@ -0,0 +1,68 @@
+#include "pch.h"
+#include "FileWatcher.h"
+
+std::optional<FILETIME> FileWatcher::MyFileTime()
+{
+    HANDLE hFile = CreateFileW(m_path.c_str(), FILE_READ_ATTRIBUTES, FILE_SHARE_DELETE | FILE_SHARE_READ | FILE_SHARE_WRITE, nullptr, OPEN_EXISTING, 0, nullptr);
+    std::optional<FILETIME> result;
+    if (hFile != INVALID_HANDLE_VALUE)
+    {
+        FILETIME lastWrite;
+        if (GetFileTime(hFile, nullptr, nullptr, &lastWrite))
+        {
+            result = lastWrite;
+        }
+
+        CloseHandle(hFile);
+    }
+
+    return result;
+}
+
+void FileWatcher::Run()
+{
+    while (1)
+    {
+        auto lastWrite = MyFileTime();
+        if (!m_lastWrite.has_value())
+        {
+            m_lastWrite = lastWrite;
+        }
+        else if (lastWrite.has_value())
+        {
+            if (m_lastWrite->dwHighDateTime != lastWrite->dwHighDateTime ||
+                m_lastWrite->dwLowDateTime != lastWrite->dwLowDateTime)
+            {
+                m_lastWrite = lastWrite;
+                m_callback();
+            }
+        }
+
+        if (WaitForSingleObject(m_abortEvent, m_refreshPeriod) == WAIT_OBJECT_0)
+        {
+            return;
+        }
+    }
+}
+
+FileWatcher::FileWatcher(const std::wstring& path, std::function<void()> callback, DWORD refreshPeriod) :
+    m_refreshPeriod(refreshPeriod),
+    m_path(path),
+    m_callback(callback)
+{
+    m_abortEvent = CreateEventW(nullptr, TRUE, FALSE, nullptr);
+    if (m_abortEvent)
+    {
+        m_thread = std::thread([this]() { Run(); });
+    }
+}
+
+FileWatcher::~FileWatcher()
+{
+    if (m_abortEvent)
+    {
+        SetEvent(m_abortEvent);
+        m_thread.join();
+        CloseHandle(m_abortEvent);
+    }
+}

src/common/SettingsAPI/FileWatcher.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#define WIN32_LEAN_AND_MEAN
+#define NOMINMAX
+#include <Windows.h>
+
+#include <thread>
+#include <optional>
+#include <string>
+#include <functional>
+
+class FileWatcher
+{
+    DWORD m_refreshPeriod;
+    std::wstring m_path;
+    std::optional<FILETIME> m_lastWrite;
+    std::function<void()> m_callback;
+    HANDLE m_abortEvent;
+    std::thread m_thread;
+    
+    std::optional<FILETIME> MyFileTime();
+    void Run();
+public:
+    FileWatcher(const std::wstring& path, std::function<void()> callback, DWORD refreshPeriod = 1000);
+    ~FileWatcher();
+};

src/common/SettingsAPI/SetttingsAPI.vcxproj

@@ -28,10 +28,12 @@
     <ClInclude Include="pch.h" />
     <ClInclude Include="settings_helpers.h" />
     <ClInclude Include="settings_objects.h" />
+    <ClInclude Include="FileWatcher.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="settings_helpers.cpp" />
     <ClCompile Include="settings_objects.cpp" />
+    <ClCompile Include="FileWatcher.cpp" />
     <ClCompile Include="pch.cpp">
       <PrecompiledHeader Condition="'$(CIBuild)'!='true'">Create</PrecompiledHeader>
     </ClCompile>

src/common/SettingsAPI/settings_helpers.h

@@ -8,6 +8,7 @@ namespace PTSettingsHelper
 {
     constexpr inline const wchar_t* log_settings_filename = L"log_settings.json";
 
+    std::wstring get_powertoys_general_save_file_location();
     std::wstring get_module_save_file_location(std::wstring_view powertoy_key);
     std::wstring get_module_save_folder_location(std::wstring_view powertoy_name);
     std::wstring get_root_save_folder_location();

src/common/Telemetry/ProjectTelemetry.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include <TraceLoggingProvider.h>
-#include <TraceLoggingDefines.h>
+#include "TraceLoggingProvider.h"
+#include "TraceLoggingDefines.h"
 
 TRACELOGGING_DECLARE_PROVIDER(g_hProvider);

src/common/interop/PowerToysInterop.vcxproj

@@ -47,6 +47,7 @@
   </ItemDefinitionGroup>
   <ItemDefinitionGroup>
     <ClCompile>
+      <PreprocessorDefinitions>PowerToysInterop;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
       <AdditionalIncludeDirectories>$(SolutionDir)src\common\interop;../../;../;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
       <OmitDefaultLibName>false</OmitDefaultLibName>
@@ -54,7 +55,7 @@
       <LanguageStandard>stdcpp17</LanguageStandard>
     </ClCompile>
     <Link>
-      <AdditionalDependencies>WindowsApp.lib;%(AdditionalDependencies)</AdditionalDependencies>
+      <AdditionalDependencies>Mf.lib;WindowsApp.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
@@ -83,6 +84,8 @@
     <WriteLinesToFile File="Generated Files\AssemblyInfo.cpp" Lines="@(HeaderLines)" Overwrite="true" Encoding="Unicode" WriteOnlyWhenDifferent="true" />
   </Target>
   <ItemGroup>
+    <ClInclude Include="..\..\modules\videoconference\VideoConferenceShared\MicrophoneDevice.h" />
+    <ClInclude Include="..\..\modules\videoconference\VideoConferenceShared\VideoCaptureDeviceList.h" />
     <ClInclude Include="HotkeyManager.h" />
     <ClInclude Include="KeyboardHook.h" />
     <ClInclude Include="pch.h" />
@@ -90,6 +93,12 @@
     <ClInclude Include="shared_constants.h" />
   </ItemGroup>
   <ItemGroup>
+    <ClCompile Include="..\..\modules\videoconference\VideoConferenceShared\MicrophoneDevice.cpp">
+      <CompileAsManaged>false</CompileAsManaged>
+    </ClCompile>    
+    <ClCompile Include="..\..\modules\videoconference\VideoConferenceShared\VideoCaptureDeviceList.cpp">
+      <CompileAsManaged>false</CompileAsManaged>
+    </ClCompile>    
     <ClCompile Include="Generated Files\AssemblyInfo.cpp" />
     <ClCompile Include="HotkeyManager.cpp" />
     <ClCompile Include="interop.cpp" />
@@ -109,6 +118,12 @@
     <Reference Include="System.Data" />
     <Reference Include="System.Xml" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
+  <ImportGroup Label="ExtensionTargets">
+    <Import Project="..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.200902.2\build\native\Microsoft.Windows.ImplementationLibrary.targets" Condition="Exists('..\..\..\packages\Microsoft.Windows.ImplementationLibrary.1.0.200902.2\build\native\Microsoft.Windows.ImplementationLibrary.targets')" />
+  </ImportGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
   </ImportGroup>

src/common/interop/PowerToysInterop.vcxproj.filters

@@ -27,7 +27,13 @@
     <ClInclude Include="resource.h">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="shared_constants.h">
+    <ClInclude Include="..\..\modules\videoconference\VideoConferenceShared\MicrophoneDevice.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="..\..\modules\videoconference\VideoConferenceShared\VideoCaptureDeviceList.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>    
+    <ClInclude Include="shared_constants.h">   
       <Filter>Header Files</Filter>
     </ClInclude>
   </ItemGroup>
@@ -50,10 +56,16 @@
     <ClCompile Include="keyboard_layout.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\modules\videoconference\VideoConferenceShared\MicrophoneDevice.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="..\..\modules\videoconference\VideoConferenceShared\VideoCaptureDeviceList.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="interop.rc">
       <Filter>Resource Files</Filter>
     </ResourceCompile>
   </ItemGroup>
-</Project>
+</Project>

src/common/interop/interop.cpp

@@ -13,12 +13,17 @@
 // Therefore the simplest way is to compile these functions as native using the pragmas below.
 #pragma managed(push, off)
 #include "../utils/os-detect.h"
+// TODO: move to a separate library in common
+#include "../../modules/videoconference/VideoConferenceShared/MicrophoneDevice.h"
+#include "../../modules/videoconference/VideoConferenceShared/VideoCaptureDeviceList.h"
 #pragma managed(pop)
 
 #include <common/version/version.h>
 
+
 using namespace System;
 using namespace System::Runtime::InteropServices;
+using System::Collections::Generic::List;
 
 // https://docs.microsoft.com/en-us/cpp/dotnet/how-to-wrap-native-class-for-use-by-csharp?view=vs-2019
 namespace interop
@@ -122,6 +127,32 @@ public
         static String ^ GetProductVersion() {
             return gcnew String(get_product_version().c_str());
         }
+
+        static List<String ^> ^ GetAllActiveMicrophoneDeviceNames() {
+            auto names = gcnew List<String ^>();
+            for (const auto& device : MicrophoneDevice::getAllActive())
+            {
+                names->Add(gcnew String(device.name().data()));
+            }
+            return names;
+        }
+
+            static List<String ^> ^
+            GetAllVideoCaptureDeviceNames() {
+                auto names = gcnew List<String ^>();
+                VideoCaptureDeviceList vcdl;
+                vcdl.EnumerateDevices();
+
+                for (UINT32 i = 0; i < vcdl.Count(); ++i)
+                {
+                    auto name = gcnew String(vcdl.GetDeviceName(i).data());
+                    if (name != L"PowerToys VideoConference Mute")
+                    {
+                        names->Add(name);
+                    }
+                }
+                return names;
+            }
     };
 
 public

src/common/interop/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.ImplementationLibrary" version="1.0.200902.2" targetFramework="native" />
+</packages>