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flowframes/Flowframes/Utilities/ColorDataUtils.cs

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C#
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using Flowframes.Data;
using Flowframes.IO;
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
namespace Flowframes.Utilities
{
class ColorDataUtils
{
public static int GetColorPrimaries(string s) // Defined by the "Color primaries" section of ISO/IEC 23091-4/ITU-T H.273
{
s = s.Trim().Lower();
if (s == "bt709") return 1;
if (s == "bt470m") return 4;
if (s == "bt470bg") return 5;
if (s == "bt601") return 6;
if (s == "smpte240m") return 7;
if (s == "film") return 8;
if (s == "bt2020") return 9;
if (s == "smpte428") return 10;
if (s == "smpte431") return 11;
if (s == "smpte432") return 12;
return 2; // Fallback: 2 = Unspecified
}
public static int GetColorTransfer(string s) // Defined by the "Transfer characteristics" section of ISO/IEC 23091-4/ITU-T H.273
{
s = s.Trim().Lower();
if (s == "bt709") return 1;
if (s == "gamma22" || s == "bt470m") return 4;
if (s == "gamma28" || s == "bt470bg") return 5; // BT.470 System B, G (historical)
if (s == "bt601" || s == "smpte170m") return 6; // BT.601
if (s == "smpte240m") return 7; // SMPTE 240 M
if (s == "linear") return 8; // Linear
//if (s == "?") return 9; // Logarithmic(100 : 1 range)
//if (s == "?") return 10; // Logarithmic (100 * Sqrt(10) : 1 range)
if (s == "iec61966-2-4") return 11; // IEC 61966-2-4
if (s == "bt1361" || s == "bt1361e") return 12; // BT.1361
if (s == "srgb") return 13; // SRGB
if (s == "bt2020-10") return 14; // BT.2020 10-bit systems
if (s == "bt2020-12") return 15; // BT.2020 12-bit systems
if (s == "smpte2084") return 16; // SMPTE ST 2084, ITU BT.2100 PQ
if (s == "smpte428") return 17; // SMPTE ST 428
if (s == "bt2100") return 18; // BT.2100 HLG, ARIB STD-B67
return 2; // Fallback: 2 = Unspecified
}
public static int GetMatrixCoeffs(string s) // Defined by the "Matrix coefficients" section of ISO/IEC 23091-4/ITU-T H.27
{
s = s.Trim().Lower();
if (s == "bt709") return 1;
if (s == "fcc") return 4; // US FCC 73.628
if (s == "bt470bg") return 5; // BT.470 System B, G (historical)
if (s == "bt601" || s == "smpte170m") return 6; // BT.601
if (s == "smpte240m") return 7; // SMPTE 240 M
if (s == "ycgco") return 8; // YCgCo
if (s == "bt2020ncl" || s == "bt2020nc") return 9; // BT.2020 non-constant luminance, BT.2100 YCbCr
if (s == "bt2020") return 10; // BT.2020 constant luminance
if (s == "smpte2085") return 11; // SMPTE ST 2085 YDzDx
// 12: MC_CHROMAT_NCL - Chromaticity-derived non-constant luminance
// 13: MC_CHROMAT_CL - Chromaticity-derived constant luminance
// 14: MC_ICTCP BT.2100 - ICtCp
return 2; // Fallback: 2 = Unspecified
}
public static int GetColorRange(string s) // Defined by the "Matrix coefficients" section of ISO/IEC 23091-4/ITU-T H.27
{
s = s.Trim().Lower();
if (s == "tv") return 1; // TV
if (s == "pc") return 2; // PC/Full
return 0; // Fallback: Unspecified
}
public static string FormatForAom(string colorspace)
{
return colorspace.Replace("bt2020-10", "bt2020-10bit").Replace("bt2020-12", "bt2020-12bit");
}
#region Get string from int
public static string GetColorPrimariesString(int n)
{
switch (n)
{
case 1: return "bt709";
case 4: return "bt470m";
case 5: return "bt470bg";
case 6: return "bt601";
case 7: return "smpte240m";
case 8: return "film";
case 9: return "bt2020";
case 10: return "smpte428";
case 11: return "smpte431";
case 12: return "smpte432";
}
return "";
}
public static string GetColorTransferString(int n)
{
switch (n)
{
case 1: return "bt709";
case 4: return "gamma22"; // "bt470m"
case 5: return "gamma28"; // "bt470bg"
case 6: return "bt601"; // "smpte170m"
case 7: return "smpte240m";
case 8: return "linear";
case 11: return "iec61966-2-4";
case 12: return "bt1361";
case 13: return "srgb";
case 14: return "bt2020-10";
case 15: return "bt2020-12";
case 16: return "smpte2084";
case 17: return "smpte428";
case 18: return "bt2100";
}
return "";
}
public static string GetColorMatrixCoeffsString(int n)
{
switch (n)
{
case 1: return "bt709";
case 4: return "fcc";
case 5: return "bt470bg";
case 6: return "bt601";
case 7: return "smpte240m";
case 8: return "ycgco";
case 9: return "bt2020ncl";
case 10: return "bt2020";
}
return "";
}
public static string GetColorRangeString(int n)
{
switch (n)
{
case 1: return "tv";
case 2: return "pc";
}
return "";
}
#endregion
#region Get friendly name from int
public static string GetColorPrimariesName(int n)
{
switch (n)
{
case 1: return "BT.709";
case 2: return "Unspecified";
case 4: return "BT.470 System B, G (historical)";
case 5: return "BT.470 System M (historical)";
case 6: return "BT.601";
case 7: return "SMPTE 240";
case 8: return "Generic film (color filters using illuminant C)";
case 9: return "BT.2020, BT.2100";
case 10: return "SMPTE 428 (CIE 1921 XYZ)";
case 11: return "SMPTE RP 431-2";
case 12: return "SMPTE EG 432-1";
case 22: return "EBU Tech. 3213-E";
}
return "Unknown";
}
public static string GetColorTransferName(int n)
{
switch (n)
{
case 1: return "BT.709";
case 2: return "Unspecified";
case 4: return "BT.470 System B, G (historical)";
case 5: return "BT.470 System M (historical)";
case 6: return "BT.601";
case 7: return "SMPTE 240 M";
case 8: return "Linear";
case 9: return "Logarithmic (100 : 1 range)";
case 10: return "Logarithmic (100 * Sqrt(10) : 1 range)";
case 11: return "IEC 61966-2-4";
case 12: return "BT.1361";
case 13: return "sRGB or sYCC";
case 14: return "BT.2020 10-bit systems";
case 15: return "BT.2020 12-bit systems";
case 16: return "SMPTE ST 2084, ITU BT.2100 PQ";
case 17: return "SMPTE ST 428";
case 18: return "BT.2100 HLG, ARIB STD-B67";
}
return "Unknown";
}
public static string GetColorMatrixCoeffsName(int n)
{
switch (n)
{
case 1: return "BT.709";
case 2: return "Unspecified";
case 4: return "US FCC 73.628";
case 5: return "BT.470 System B, G (historical)";
case 6: return "BT.601";
case 7: return "SMPTE 240 M";
case 8: return "YCgCo";
case 9: return "BT.2020 non-constant luminance, BT.2100 YCbCr";
case 10: return "BT.2020 constant luminance";
case 11: return "SMPTE ST 2085 YDzDx";
case 12: return "Chromaticity-derived non-constant luminance";
case 13: return "Chromaticity-derived constant luminance";
case 14: return "BT.2100 ICtCp";
}
return "Unknown";
}
public static string GetColorRangeName(int n)
{
switch (n)
{
case 0: return "Unspecified";
case 1: return "TV (Limited)";
case 2: return "PC (Full)";
}
return "Unknown";
}
#endregion
}
}
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