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GraphicsContextGLCVCocoa.cpp
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GraphicsContextGLCVCocoa.cpp
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/*
* Copyright (C) 2016 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 "config.h"
#include "GraphicsContextGLCVCocoa.h"
#if ENABLE(WEBGL) && ENABLE(VIDEO) && USE(AVFOUNDATION)
#include "ANGLEHeaders.h"
#include "ANGLEUtilitiesCocoa.h"
#include "FourCC.h"
#include "GraphicsContextGLCocoa.h"
#include "Logging.h"
#include "VideoFrameCV.h"
#include <pal/spi/cf/CoreVideoSPI.h>
#include <pal/spi/cocoa/IOSurfaceSPI.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/Scope.h>
#include <wtf/StdMap.h>
#include <wtf/cf/TypeCastsCF.h>
#include <wtf/text/StringBuilder.h>
#include "CoreVideoSoftLink.h"
namespace WebCore {
static constexpr auto s_yuvVertexShaderTexture2D {
"attribute vec2 a_position;"
"uniform vec2 u_yTextureSize;"
"uniform vec2 u_uvTextureSize;"
"uniform int u_flipY;"
"uniform int u_flipX;"
"uniform int u_swapXY;"
"varying vec2 v_yTextureCoordinate;"
"varying vec2 v_uvTextureCoordinate;"
"void main()"
"{"
" gl_Position = vec4(a_position, 0, 1.0);"
" vec2 normalizedPosition = a_position * .5 + .5;"
" if (u_flipY == 1)"
" normalizedPosition.y = 1.0 - normalizedPosition.y;"
" if (u_flipX == 1)"
" normalizedPosition.x = 1.0 - normalizedPosition.x;"
" if (u_swapXY == 1)"
" normalizedPosition.xy = normalizedPosition.yx;"
" v_yTextureCoordinate = normalizedPosition;"
" v_uvTextureCoordinate = normalizedPosition;"
"}"_s
};
static constexpr auto s_yuvVertexShaderTextureRectangle {
"attribute vec2 a_position;"
"uniform vec2 u_yTextureSize;"
"uniform vec2 u_uvTextureSize;"
"uniform int u_flipY;"
"uniform int u_flipX;"
"uniform int u_swapXY;"
"varying vec2 v_yTextureCoordinate;"
"varying vec2 v_uvTextureCoordinate;"
"void main()"
"{"
" gl_Position = vec4(a_position, 0, 1.0);"
" vec2 normalizedPosition = a_position * .5 + .5;"
" if (u_flipY == 1)"
" normalizedPosition.y = 1.0 - normalizedPosition.y;"
" if (u_flipX == 1)"
" normalizedPosition.x = 1.0 - normalizedPosition.x;"
" if (u_swapXY == 1)"
" normalizedPosition.xy = normalizedPosition.yx;"
" v_yTextureCoordinate = normalizedPosition * u_yTextureSize;"
" v_uvTextureCoordinate = normalizedPosition * u_uvTextureSize;"
"}"_s
};
constexpr auto s_yuvFragmentShaderTexture2D {
"precision mediump float;"
"uniform sampler2D u_yTexture;"
"uniform sampler2D u_uvTexture;"
"uniform mat4 u_colorMatrix;"
"varying vec2 v_yTextureCoordinate;"
"varying vec2 v_uvTextureCoordinate;"
"void main()"
"{"
" vec4 yuv;"
" yuv.r = texture2D(u_yTexture, v_yTextureCoordinate).r;"
" yuv.gb = texture2D(u_uvTexture, v_uvTextureCoordinate).rg;"
" yuv.a = 1.0;"
" gl_FragColor = yuv * u_colorMatrix;"
"}"_s
};
static constexpr auto s_yuvFragmentShaderTextureRectangle {
"precision mediump float;"
"uniform sampler2DRect u_yTexture;"
"uniform sampler2DRect u_uvTexture;"
"uniform mat4 u_colorMatrix;"
"varying vec2 v_yTextureCoordinate;"
"varying vec2 v_uvTextureCoordinate;"
"void main()"
"{"
" vec4 yuv;"
" yuv.r = texture2DRect(u_yTexture, v_yTextureCoordinate).r;"
" yuv.gb = texture2DRect(u_uvTexture, v_uvTextureCoordinate).rg;"
" yuv.a = 1.0;"
" gl_FragColor = yuv * u_colorMatrix;"
"}"_s
};
enum class PixelRange {
Unknown,
Video,
Full,
};
enum class TransferFunctionCV {
Unknown,
kITU_R_709_2,
kITU_R_601_4,
kSMPTE_240M_1995,
kDCI_P3,
kP3_D65,
kITU_R_2020,
};
static PixelRange pixelRangeFromPixelFormat(OSType pixelFormat)
{
switch (pixelFormat) {
case kCVPixelFormatType_4444AYpCbCr8:
case kCVPixelFormatType_4444AYpCbCr16:
case kCVPixelFormatType_422YpCbCr_4A_8BiPlanar:
case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
case kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange:
case kCVPixelFormatType_422YpCbCr10BiPlanarVideoRange:
case kCVPixelFormatType_444YpCbCr10BiPlanarVideoRange:
#if HAVE(COREVIDEO_COMPRESSED_PIXEL_FORMAT_TYPES)
case kCVPixelFormatType_AGX_420YpCbCr8BiPlanarVideoRange:
#endif
return PixelRange::Video;
case kCVPixelFormatType_420YpCbCr8PlanarFullRange:
case kCVPixelFormatType_420YpCbCr8BiPlanarFullRange:
case kCVPixelFormatType_422YpCbCr8FullRange:
case kCVPixelFormatType_ARGB2101010LEPacked:
case kCVPixelFormatType_420YpCbCr10BiPlanarFullRange:
case kCVPixelFormatType_422YpCbCr10BiPlanarFullRange:
case kCVPixelFormatType_444YpCbCr10BiPlanarFullRange:
#if HAVE(COREVIDEO_COMPRESSED_PIXEL_FORMAT_TYPES)
case kCVPixelFormatType_AGX_420YpCbCr8BiPlanarFullRange:
#endif
return PixelRange::Full;
default:
return PixelRange::Unknown;
}
}
static TransferFunctionCV transferFunctionFromString(CFStringRef string)
{
if (!string)
return TransferFunctionCV::Unknown;
if (CFEqual(string, kCVImageBufferYCbCrMatrix_ITU_R_709_2))
return TransferFunctionCV::kITU_R_709_2;
if (CFEqual(string, kCVImageBufferYCbCrMatrix_ITU_R_601_4))
return TransferFunctionCV::kITU_R_601_4;
if (CFEqual(string, kCVImageBufferYCbCrMatrix_SMPTE_240M_1995))
return TransferFunctionCV::kSMPTE_240M_1995;
if (canLoad_CoreVideo_kCVImageBufferYCbCrMatrix_DCI_P3() && CFEqual(string, kCVImageBufferYCbCrMatrix_DCI_P3))
return TransferFunctionCV::kDCI_P3;
if (canLoad_CoreVideo_kCVImageBufferYCbCrMatrix_P3_D65() && CFEqual(string, kCVImageBufferYCbCrMatrix_P3_D65))
return TransferFunctionCV::kP3_D65;
if (canLoad_CoreVideo_kCVImageBufferYCbCrMatrix_ITU_R_2020() && CFEqual(string, kCVImageBufferYCbCrMatrix_ITU_R_2020))
return TransferFunctionCV::kITU_R_2020;
return TransferFunctionCV::Unknown;
}
struct GLfloatColor {
union {
struct {
GLfloat r;
GLfloat g;
GLfloat b;
} rgb;
struct {
GLfloat y;
GLfloat cb;
GLfloat cr;
} ycbcr;
};
constexpr GLfloatColor(GLfloat r, GLfloat g, GLfloat b)
: rgb { r, g, b }
{
}
constexpr GLfloatColor(int r, int g, int b, GLfloat scale)
: rgb { r / scale, g / scale, b / scale }
{
}
static constexpr GLfloat abs(GLfloat value)
{
return value >= 0 ? value : -value;
}
constexpr bool isApproximatelyEqualTo(const GLfloatColor& color, GLfloat maxDelta) const
{
return abs(rgb.r - color.rgb.r) < abs(maxDelta)
&& abs(rgb.g - color.rgb.g) < abs(maxDelta)
&& abs(rgb.b - color.rgb.b) < abs(maxDelta);
}
};
struct GLfloatColors {
static constexpr GLfloatColor black { 0, 0, 0 };
static constexpr GLfloatColor white { 1, 1, 1 };
static constexpr GLfloatColor red { 1, 0, 0 };
static constexpr GLfloatColor green { 0, 1, 0 };
static constexpr GLfloatColor blue { 0, 0, 1 };
static constexpr GLfloatColor cyan { 0, 1, 1 };
static constexpr GLfloatColor magenta { 1, 0, 1 };
static constexpr GLfloatColor yellow { 1, 1, 0 };
};
struct YCbCrMatrix {
GLfloat rows[4][4];
constexpr YCbCrMatrix(PixelRange, GLfloat cbCoefficient, GLfloat crCoefficient);
operator const GLfloat*() const
{
return &rows[0][0];
}
constexpr GLfloatColor operator*(const GLfloatColor&) const;
};
constexpr YCbCrMatrix::YCbCrMatrix(PixelRange range, GLfloat cbCoefficient, GLfloat crCoefficient)
: rows { }
{
// The conversion from YCbCr -> RGB generally takes the form:
// Y = Kr * R + Kg * G + Kb * B
// Cb = (B - Y) / (2 * (1 - Kb))
// Cr = (R - Y) / (2 * (1 - Kr))
// Where the values of Kb and Kr are defined in a specification and Kg is derived from: Kr + Kg + Kb = 1
//
// Solving the above equations for R, B, and G derives the following:
// R = Y + (2 * (1 - Kr)) * Cr
// B = Y + (2 * (1 - Kb)) * Cb
// G = Y - (2 * (1 - Kb)) * (Kb / Kg) * Cb - ((1 - Kr) * 2) * (Kr / Kg) * Cr
//
// When the color values are Video range, Y has a range of [16, 235] with a width of 219, and Cb & Cr have
// a range of [16, 240] with a width of 224. When the color values are Full range, Y, Cb, and Cr all have
// a range of [0, 255] with a width of 256.
GLfloat cgCoefficient = 1 - cbCoefficient - crCoefficient;
GLfloat yScalingFactor = range == PixelRange::Full ? 1.f : 255.f / 219.f;
GLfloat cbcrScalingFactor = range == PixelRange::Full ? 1.f : 255.f / 224.f;
rows[0][0] = yScalingFactor;
rows[0][1] = 0;
rows[0][2] = cbcrScalingFactor * 2 * (1 - crCoefficient);
rows[0][3] = 0;
rows[1][0] = yScalingFactor;
rows[1][1] = -cbcrScalingFactor * 2 * (1 - cbCoefficient) * (cbCoefficient / cgCoefficient);
rows[1][2] = -cbcrScalingFactor * 2 * (1 - crCoefficient) * (crCoefficient / cgCoefficient);
rows[1][3] = 0;
rows[2][0] = yScalingFactor;
rows[2][1] = cbcrScalingFactor * 2 * (1 - cbCoefficient);
rows[2][2] = 0;
rows[2][3] = 0;
rows[3][0] = 0;
rows[3][1] = 0;
rows[3][2] = 0;
rows[3][3] = 1;
// Configure the final column of the matrix to convert Cb and Cr to [-128, 128]
// and, in the case of video-range, to convert Y to [16, 240]:
for (auto rowNumber = 0; rowNumber < 3; ++rowNumber) {
auto& row = rows[rowNumber];
auto& x = row[0];
auto& y = row[1];
auto& z = row[2];
auto& w = row[3];
w -= (y + z) * 128 / 255;
if (range == PixelRange::Video)
w -= x * 16 / 255;
}
}
constexpr GLfloatColor YCbCrMatrix::operator*(const GLfloatColor& color) const
{
return GLfloatColor(
rows[0][0] * color.rgb.r + rows[0][1] * color.rgb.g + rows[0][2] * color.rgb.b + rows[0][3],
rows[1][0] * color.rgb.r + rows[1][1] * color.rgb.g + rows[1][2] * color.rgb.b + rows[1][3],
rows[2][0] * color.rgb.r + rows[2][1] * color.rgb.g + rows[2][2] * color.rgb.b + rows[2][3]
);
}
static const GLfloat* YCbCrToRGBMatrixForRangeAndTransferFunction(PixelRange range, TransferFunctionCV transferFunction)
{
using MapKey = std::pair<PixelRange, TransferFunctionCV>;
using MatrixMap = StdMap<MapKey, const YCbCrMatrix&>;
static NeverDestroyed<MatrixMap> matrices;
static dispatch_once_t onceToken;
// Matrices are derived from the components in the ITU R.601 rev 4 specification
// https://www.itu.int/rec/R-REC-BT.601
constexpr static YCbCrMatrix r601VideoMatrix { PixelRange::Video, 0.114f, 0.299f };
constexpr static YCbCrMatrix r601FullMatrix { PixelRange::Full, 0.114f, 0.299f };
static_assert((r601VideoMatrix * GLfloatColor(16, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::black, 1.5f / 255.f), "r.610 video matrix does not produce black color");
static_assert((r601VideoMatrix * GLfloatColor(235, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::white, 1.5f / 255.f), "r.610 video matrix does not produce white color");
static_assert((r601VideoMatrix * GLfloatColor(81, 90, 240, 255)).isApproximatelyEqualTo(GLfloatColors::red, 1.5f / 255.f), "r.610 video matrix does not produce red color");
static_assert((r601VideoMatrix * GLfloatColor(145, 54, 34, 255)).isApproximatelyEqualTo(GLfloatColors::green, 1.5f / 255.f), "r.610 video matrix does not produce green color");
static_assert((r601VideoMatrix * GLfloatColor(41, 240, 110, 255)).isApproximatelyEqualTo(GLfloatColors::blue, 1.5f / 255.f), "r.610 video matrix does not produce blue color");
static_assert((r601VideoMatrix * GLfloatColor(210, 16, 146, 255)).isApproximatelyEqualTo(GLfloatColors::yellow, 1.5f / 255.f), "r.610 video matrix does not produce yellow color");
static_assert((r601VideoMatrix * GLfloatColor(106, 202, 222, 255)).isApproximatelyEqualTo(GLfloatColors::magenta, 1.5f / 255.f), "r.610 video matrix does not produce magenta color");
static_assert((r601VideoMatrix * GLfloatColor(170, 166, 16, 255)).isApproximatelyEqualTo(GLfloatColors::cyan, 1.5f / 255.f), "r.610 video matrix does not produce cyan color");
static_assert((r601FullMatrix * GLfloatColor(0, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::black, 1.5f / 255.f), "r.610 full matrix does not produce black color");
static_assert((r601FullMatrix * GLfloatColor(255, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::white, 1.5f / 255.f), "r.610 full matrix does not produce white color");
static_assert((r601FullMatrix * GLfloatColor(76, 85, 255, 255)).isApproximatelyEqualTo(GLfloatColors::red, 1.5f / 255.f), "r.610 full matrix does not produce red color");
static_assert((r601FullMatrix * GLfloatColor(150, 44, 21, 255)).isApproximatelyEqualTo(GLfloatColors::green, 1.5f / 255.f), "r.610 full matrix does not produce green color");
static_assert((r601FullMatrix * GLfloatColor(29, 255, 107, 255)).isApproximatelyEqualTo(GLfloatColors::blue, 1.5f / 255.f), "r.610 full matrix does not produce blue color");
static_assert((r601FullMatrix * GLfloatColor(226, 0, 149, 255)).isApproximatelyEqualTo(GLfloatColors::yellow, 1.5f / 255.f), "r.610 full matrix does not produce yellow color");
static_assert((r601FullMatrix * GLfloatColor(105, 212, 235, 255)).isApproximatelyEqualTo(GLfloatColors::magenta, 1.5f / 255.f), "r.610 full matrix does not produce magenta color");
static_assert((r601FullMatrix * GLfloatColor(179, 171, 1, 255)).isApproximatelyEqualTo(GLfloatColors::cyan, 1.5f / 255.f), "r.610 full matrix does not produce cyan color");
// Matrices are derived from the components in the ITU R.709 rev 2 specification
// https://www.itu.int/rec/R-REC-BT.709-2-199510-S
constexpr static YCbCrMatrix r709VideoMatrix { PixelRange::Video, 0.0722, 0.2126 };
constexpr static YCbCrMatrix r709FullMatrix { PixelRange::Full, 0.0722, 0.2126 };
static_assert((r709VideoMatrix * GLfloatColor(16, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::black, 1.5f / 255.f), "r.709 video matrix does not produce black color");
static_assert((r709VideoMatrix * GLfloatColor(235, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::white, 1.5f / 255.f), "r.709 video matrix does not produce white color");
static_assert((r709VideoMatrix * GLfloatColor(63, 102, 240, 255)).isApproximatelyEqualTo(GLfloatColors::red, 1.5f / 255.f), "r.709 video matrix does not produce red color");
static_assert((r709VideoMatrix * GLfloatColor(173, 42, 26, 255)).isApproximatelyEqualTo(GLfloatColors::green, 1.5f / 255.f), "r.709 video matrix does not produce green color");
static_assert((r709VideoMatrix * GLfloatColor(32, 240, 118, 255)).isApproximatelyEqualTo(GLfloatColors::blue, 1.5f / 255.f), "r.709 video matrix does not produce blue color");
static_assert((r709VideoMatrix * GLfloatColor(219, 16, 138, 255)).isApproximatelyEqualTo(GLfloatColors::yellow, 1.5f / 255.f), "r.709 video matrix does not produce yellow color");
static_assert((r709VideoMatrix * GLfloatColor(78, 214, 230, 255)).isApproximatelyEqualTo(GLfloatColors::magenta, 1.5f / 255.f), "r.709 video matrix does not produce magenta color");
static_assert((r709VideoMatrix * GLfloatColor(188, 154, 16, 255)).isApproximatelyEqualTo(GLfloatColors::cyan, 1.5f / 255.f), "r.709 video matrix does not produce cyan color");
static_assert((r709FullMatrix * GLfloatColor(0, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::black, 1.5f / 255.f), "r.709 full matrix does not produce black color");
static_assert((r709FullMatrix * GLfloatColor(255, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::white, 1.5f / 255.f), "r.709 full matrix does not produce white color");
static_assert((r709FullMatrix * GLfloatColor(54, 99, 256, 255)).isApproximatelyEqualTo(GLfloatColors::red, 1.5f / 255.f), "r.709 full matrix does not produce red color");
static_assert((r709FullMatrix * GLfloatColor(182, 30, 12, 255)).isApproximatelyEqualTo(GLfloatColors::green, 1.5f / 255.f), "r.709 full matrix does not produce green color");
static_assert((r709FullMatrix * GLfloatColor(18, 256, 116, 255)).isApproximatelyEqualTo(GLfloatColors::blue, 1.5f / 255.f), "r.709 full matrix does not produce blue color");
static_assert((r709FullMatrix * GLfloatColor(237, 1, 140, 255)).isApproximatelyEqualTo(GLfloatColors::yellow, 1.5f / 255.f), "r.709 full matrix does not produce yellow color");
static_assert((r709FullMatrix * GLfloatColor(73, 226, 244, 255)).isApproximatelyEqualTo(GLfloatColors::magenta, 1.5f / 255.f), "r.709 full matrix does not produce magenta color");
static_assert((r709FullMatrix * GLfloatColor(201, 157, 1, 255)).isApproximatelyEqualTo(GLfloatColors::cyan, 1.5f / 255.f), "r.709 full matrix does not produce cyan color");
// Matrices are derived from the components in the ITU-R BT.2020-2 specification
// https://www.itu.int/rec/R-REC-BT.2020
constexpr static YCbCrMatrix bt2020VideoMatrix { PixelRange::Video, 0.0593, 0.2627 };
constexpr static YCbCrMatrix bt2020FullMatrix { PixelRange::Full, 0.0593, 0.2627 };
static_assert((bt2020VideoMatrix * GLfloatColor(16, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::black, 1.5f / 255.f), "bt.2020 video matrix does not produce black color");
static_assert((bt2020VideoMatrix * GLfloatColor(235, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::white, 1.5f / 255.f), "bt.2020 video matrix does not produce white color");
static_assert((bt2020VideoMatrix * GLfloatColor(74, 97, 240, 255)).isApproximatelyEqualTo(GLfloatColors::red, 1.5f / 255.f), "bt.2020 video matrix does not produce red color");
static_assert((bt2020VideoMatrix * GLfloatColor(164, 47, 25, 255)).isApproximatelyEqualTo(GLfloatColors::green, 1.5f / 255.f), "bt.2020 video matrix does not produce green color");
static_assert((bt2020VideoMatrix * GLfloatColor(29, 240, 119, 255)).isApproximatelyEqualTo(GLfloatColors::blue, 1.5f / 255.f), "bt.2020 video matrix does not produce blue color");
static_assert((bt2020VideoMatrix * GLfloatColor(222, 16, 137, 255)).isApproximatelyEqualTo(GLfloatColors::yellow, 1.5f / 255.f), "bt.2020 video matrix does not produce yellow color");
static_assert((bt2020VideoMatrix * GLfloatColor(87, 209, 231, 255)).isApproximatelyEqualTo(GLfloatColors::magenta, 1.5f / 255.f), "bt.2020 video matrix does not produce magenta color");
static_assert((bt2020VideoMatrix * GLfloatColor(177, 159, 16, 255)).isApproximatelyEqualTo(GLfloatColors::cyan, 1.5f / 255.f), "bt.2020 video matrix does not produce cyan color");
static_assert((bt2020FullMatrix * GLfloatColor(0, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::black, 1.5f / 255.f), "bt.2020 full matrix does not produce black color");
static_assert((bt2020FullMatrix * GLfloatColor(255, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::white, 1.5f / 255.f), "bt.2020 full matrix does not produce white color");
static_assert((bt2020FullMatrix * GLfloatColor(67, 92, 256, 255)).isApproximatelyEqualTo(GLfloatColors::red, 1.5f / 255.f), "bt.2020 full matrix does not produce red color");
static_assert((bt2020FullMatrix * GLfloatColor(173, 36, 11, 255)).isApproximatelyEqualTo(GLfloatColors::green, 1.5f / 255.f), "bt.2020 full matrix does not produce green color");
static_assert((bt2020FullMatrix * GLfloatColor(15, 256, 118, 255)).isApproximatelyEqualTo(GLfloatColors::blue, 1.5f / 255.f), "bt.2020 full matrix does not produce blue color");
static_assert((bt2020FullMatrix * GLfloatColor(240, 0, 138, 255)).isApproximatelyEqualTo(GLfloatColors::yellow, 1.5f / 255.f), "bt.2020 full matrix does not produce yellow color");
static_assert((bt2020FullMatrix * GLfloatColor(82, 220, 245, 255)).isApproximatelyEqualTo(GLfloatColors::magenta, 1.5f / 255.f), "bt.2020 full matrix does not produce magenta color");
static_assert((bt2020FullMatrix * GLfloatColor(188, 164, 1, 255)).isApproximatelyEqualTo(GLfloatColors::cyan, 1.5f / 255.f), "bt.2020 full matrix does not produce cyan color");
// Matrices are derived from the components in the SMPTE 240M-1999 specification
// http://ieeexplore.ieee.org/document/7291461/
constexpr static YCbCrMatrix smpte240MVideoMatrix { PixelRange::Video, 0.087, 0.212 };
constexpr static YCbCrMatrix smpte240MFullMatrix { PixelRange::Full, 0.087, 0.212 };
static_assert((smpte240MVideoMatrix * GLfloatColor(16, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::black, 1.5f / 255.f), "SMPTE 240M video matrix does not produce black color");
static_assert((smpte240MVideoMatrix * GLfloatColor(235, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::white, 1.5f / 255.f), "SMPTE 240M video matrix does not produce white color");
static_assert((smpte240MVideoMatrix * GLfloatColor(62, 102, 240, 255)).isApproximatelyEqualTo(GLfloatColors::red, 1.5f / 255.f), "SMPTE 240M video matrix does not produce red color");
static_assert((smpte240MVideoMatrix * GLfloatColor(170, 42, 28, 255)).isApproximatelyEqualTo(GLfloatColors::green, 1.5f / 255.f), "SMPTE 240M video matrix does not produce green color");
static_assert((smpte240MVideoMatrix * GLfloatColor(35, 240, 116, 255)).isApproximatelyEqualTo(GLfloatColors::blue, 1.5f / 255.f), "SMPTE 240M video matrix does not produce blue color");
static_assert((smpte240MVideoMatrix * GLfloatColor(216, 16, 140, 255)).isApproximatelyEqualTo(GLfloatColors::yellow, 1.5f / 255.f), "SMPTE 240M video matrix does not produce yellow color");
static_assert((smpte240MVideoMatrix * GLfloatColor(81, 214, 228, 255)).isApproximatelyEqualTo(GLfloatColors::magenta, 1.5f / 255.f), "SMPTE 240M video matrix does not produce magenta color");
static_assert((smpte240MVideoMatrix * GLfloatColor(189, 154, 16, 255)).isApproximatelyEqualTo(GLfloatColors::cyan, 1.5f / 255.f), "SMPTE 240M video matrix does not produce cyan color");
static_assert((smpte240MFullMatrix * GLfloatColor(0, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::black, 1.5f / 255.f), "SMPTE 240M full matrix does not produce black color");
static_assert((smpte240MFullMatrix * GLfloatColor(255, 128, 128, 255)).isApproximatelyEqualTo(GLfloatColors::white, 1.5f / 255.f), "SMPTE 240M full matrix does not produce white color");
static_assert((smpte240MFullMatrix * GLfloatColor(54, 98, 256, 255)).isApproximatelyEqualTo(GLfloatColors::red, 1.5f / 255.f), "SMPTE 240M full matrix does not produce red color");
static_assert((smpte240MFullMatrix * GLfloatColor(179, 30, 15, 255)).isApproximatelyEqualTo(GLfloatColors::green, 1.5f / 255.f), "SMPTE 240M full matrix does not produce green color");
static_assert((smpte240MFullMatrix * GLfloatColor(22, 256, 114, 255)).isApproximatelyEqualTo(GLfloatColors::blue, 1.5f / 255.f), "SMPTE 240M full matrix does not produce blue color");
static_assert((smpte240MFullMatrix * GLfloatColor(233, 1, 142, 255)).isApproximatelyEqualTo(GLfloatColors::yellow, 1.5f / 255.f), "SMPTE 240M full matrix does not produce yellow color");
static_assert((smpte240MFullMatrix * GLfloatColor(76, 226, 241, 255)).isApproximatelyEqualTo(GLfloatColors::magenta, 1.5f / 255.f), "SMPTE 240M full matrix does not produce magenta color");
static_assert((smpte240MFullMatrix * GLfloatColor(201, 158, 1, 255)).isApproximatelyEqualTo(GLfloatColors::cyan, 1.5f / 255.f), "SMPTE 240M full matrix does not produce cyan color");
dispatch_once(&onceToken, ^{
matrices.get().emplace(MapKey(PixelRange::Video, TransferFunctionCV::kITU_R_601_4), r601VideoMatrix);
matrices.get().emplace(MapKey(PixelRange::Full, TransferFunctionCV::kITU_R_601_4), r601FullMatrix);
matrices.get().emplace(MapKey(PixelRange::Video, TransferFunctionCV::kITU_R_709_2), r709VideoMatrix);
matrices.get().emplace(MapKey(PixelRange::Full, TransferFunctionCV::kITU_R_709_2), r709FullMatrix);
matrices.get().emplace(MapKey(PixelRange::Video, TransferFunctionCV::kITU_R_2020), bt2020VideoMatrix);
matrices.get().emplace(MapKey(PixelRange::Full, TransferFunctionCV::kITU_R_2020), bt2020FullMatrix);
matrices.get().emplace(MapKey(PixelRange::Video, TransferFunctionCV::kSMPTE_240M_1995), smpte240MVideoMatrix);
matrices.get().emplace(MapKey(PixelRange::Full, TransferFunctionCV::kSMPTE_240M_1995), smpte240MFullMatrix);
});
// We should never be asked to handle a Pixel Format whose range value is unknown.
ASSERT(range != PixelRange::Unknown);
if (range == PixelRange::Unknown)
range = PixelRange::Full;
auto iterator = matrices.get().find({ range, transferFunction });
// Assume unknown transfer functions are r.601:
if (iterator == matrices.get().end())
iterator = matrices.get().find({ range, TransferFunctionCV::kITU_R_601_4 });
ASSERT(iterator != matrices.get().end());
return iterator->second;
}
inline bool GraphicsContextGLCVCocoa::TextureContent::operator==(const TextureContent& other) const
{
return surface == other.surface
&& surfaceSeed == other.surfaceSeed
&& level == other.level
&& internalFormat == other.internalFormat
&& format == other.format
&& type == other.type
&& unpackFlipY == other.unpackFlipY
&& ImageOrientation::Orientation(orientation) == ImageOrientation::Orientation(other.orientation);
}
std::unique_ptr<GraphicsContextGLCVCocoa> GraphicsContextGLCVCocoa::create(GraphicsContextGLCocoa& context)
{
std::unique_ptr<GraphicsContextGLCVCocoa> cv { new GraphicsContextGLCVCocoa(context) };
if (!cv->m_context)
return nullptr;
return cv;
}
GraphicsContextGLCVCocoa::~GraphicsContextGLCVCocoa()
{
if (!m_context || !GraphicsContextGLCocoa::makeCurrent(m_display, m_context))
return;
GL_DeleteBuffers(1, &m_yuvVertexBuffer);
GL_DeleteFramebuffers(1, &m_framebuffer);
EGL_DestroyContext(m_display, m_context);
}
GraphicsContextGLCVCocoa::GraphicsContextGLCVCocoa(GraphicsContextGLCocoa& owner)
: m_owner(owner)
{
// Create compatible context that shares state with owner, but one that does not
// have robustness or WebGL compatibility.
const EGLint contextAttributes[] = {
EGL_CONTEXT_CLIENT_VERSION,
owner.m_isForWebGL2 ? 3 : 2,
EGL_CONTEXT_OPENGL_BACKWARDS_COMPATIBLE_ANGLE,
EGL_FALSE,
EGL_CONTEXT_CLIENT_ARRAYS_ENABLED_ANGLE,
EGL_FALSE,
EGL_CONTEXT_BIND_GENERATES_RESOURCE_CHROMIUM,
EGL_FALSE,
EGL_NONE
};
EGLDisplay display = owner.platformDisplay();
EGLConfig config = owner.platformConfig();
EGLContext context = EGL_CreateContext(display, config, owner.m_contextObj, contextAttributes);
if (context == EGL_NO_CONTEXT)
return;
GraphicsContextGLCocoa::makeCurrent(display, context);
auto contextCleanup = makeScopeExit([display, context] {
GraphicsContextGLCocoa::makeCurrent(display, EGL_NO_CONTEXT);
EGL_DestroyContext(display, context);
});
const bool useTexture2D = m_owner.drawingBufferTextureTarget() == GL_TEXTURE_2D;
#if PLATFORM(MAC) || PLATFORM(MACCATALYST)
if (!useTexture2D) {
GL_RequestExtensionANGLE("GL_ANGLE_texture_rectangle");
GL_RequestExtensionANGLE("GL_EXT_texture_format_BGRA8888");
if (GL_GetError() != GL_NO_ERROR)
return;
}
#endif
GLint vertexShader = GL_CreateShader(GL_VERTEX_SHADER);
GLint fragmentShader = GL_CreateShader(GL_FRAGMENT_SHADER);
GLuint yuvProgram = GL_CreateProgram();
auto programCleanup = makeScopeExit([vertexShader, fragmentShader, yuvProgram] {
GL_DeleteShader(vertexShader);
GL_DeleteShader(fragmentShader);
GL_DeleteProgram(yuvProgram);
});
// These are written so strlen might be compile-time.
GLint vsLength = useTexture2D ? s_yuvVertexShaderTexture2D.length() : s_yuvVertexShaderTextureRectangle.length();
GLint fsLength = useTexture2D ? s_yuvFragmentShaderTexture2D.length() : s_yuvFragmentShaderTextureRectangle.length();
const char* vertexShaderSource = useTexture2D ? s_yuvVertexShaderTexture2D : s_yuvVertexShaderTextureRectangle;
const char* fragmentShaderSource = useTexture2D ? s_yuvFragmentShaderTexture2D : s_yuvFragmentShaderTextureRectangle;
GL_ShaderSource(vertexShader, 1, &vertexShaderSource, &vsLength);
GL_ShaderSource(fragmentShader, 1, &fragmentShaderSource, &fsLength);
GL_CompileShader(vertexShader);
GL_CompileShader(fragmentShader);
GL_AttachShader(yuvProgram, vertexShader);
GL_AttachShader(yuvProgram, fragmentShader);
GL_LinkProgram(yuvProgram);
// Link status is checked afterwards for theoretical parallel compilation benefit.
GLuint yuvVertexBuffer = 0;
GL_GenBuffers(1, &yuvVertexBuffer);
auto yuvVertexBufferCleanup = makeScopeExit([yuvVertexBuffer] {
GL_DeleteBuffers(1, &yuvVertexBuffer);
});
float vertices[12] = { -1, -1, 1, -1, 1, 1, 1, 1, -1, 1, -1, -1 };
GL_BindBuffer(GL_ARRAY_BUFFER, yuvVertexBuffer);
GL_BufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
GLuint framebuffer = 0;
GL_GenFramebuffers(1, &framebuffer);
auto framebufferCleanup = makeScopeExit([framebuffer] {
GL_DeleteFramebuffers(1, &framebuffer);
});
GLint status = 0;
GL_GetProgramivRobustANGLE(yuvProgram, GL_LINK_STATUS, 1, nullptr, &status);
if (!status) {
GLint vsStatus = 0;
GL_GetShaderivRobustANGLE(vertexShader, GL_COMPILE_STATUS, 1, nullptr, &vsStatus);
GLint fsStatus = 0;
GL_GetShaderivRobustANGLE(fragmentShader, GL_COMPILE_STATUS, 1, nullptr, &fsStatus);
LOG(WebGL, "GraphicsContextGLCVCocoa(%p) - YUV program failed to link: %d, %d, %d.", this, status, vsStatus, fsStatus);
return;
}
contextCleanup.release();
yuvVertexBufferCleanup.release();
framebufferCleanup.release();
m_display = display;
m_context = context;
m_config = config;
m_yuvVertexBuffer = yuvVertexBuffer;
m_framebuffer = framebuffer;
m_yTextureUniformLocation = GL_GetUniformLocation(yuvProgram, "u_yTexture");
m_uvTextureUniformLocation = GL_GetUniformLocation(yuvProgram, "u_uvTexture");
m_colorMatrixUniformLocation = GL_GetUniformLocation(yuvProgram, "u_colorMatrix");
m_yuvFlipYUniformLocation = GL_GetUniformLocation(yuvProgram, "u_flipY");
m_yuvFlipXUniformLocation = GL_GetUniformLocation(yuvProgram, "u_flipX");
m_yuvSwapXYUniformLocation = GL_GetUniformLocation(yuvProgram, "u_swapXY");
m_yTextureSizeUniformLocation = GL_GetUniformLocation(yuvProgram, "u_yTextureSize");
m_uvTextureSizeUniformLocation = GL_GetUniformLocation(yuvProgram, "u_uvTextureSize");
m_yuvPositionAttributeLocation = GL_GetAttribLocation(yuvProgram, "a_position");
// Program is deleted by the cleanup while the program binary stays in use.
GL_UseProgram(yuvProgram);
GL_EnableVertexAttribArray(m_yuvPositionAttributeLocation);
GL_VertexAttribPointer(m_yuvPositionAttributeLocation, 2, GL_FLOAT, false, 0, 0);
GL_ClearColor(0, 0, 0, 0);
GL_BindFramebuffer(GL_FRAMEBUFFER, m_framebuffer);
}
bool GraphicsContextGLCVCocoa::copyVideoSampleToTexture(const VideoFrameCV& videoFrame, PlatformGLObject outputTexture, GLint level, GLenum internalFormat, GLenum format, GLenum type, FlipY unpackFlipY)
{
auto image = videoFrame.pixelBuffer();
// FIXME: This currently only supports '420v' and '420f' pixel formats. Investigate supporting more pixel formats.
OSType pixelFormat = CVPixelBufferGetPixelFormatType(image);
if (pixelFormat != kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange // NOLINT
&& pixelFormat != kCVPixelFormatType_420YpCbCr8BiPlanarFullRange
#if HAVE(COREVIDEO_COMPRESSED_PIXEL_FORMAT_TYPES)
&& pixelFormat != kCVPixelFormatType_AGX_420YpCbCr8BiPlanarVideoRange
&& pixelFormat != kCVPixelFormatType_AGX_420YpCbCr8BiPlanarFullRange
#endif
) {
LOG(WebGL, "GraphicsContextGLCVCocoa::copyVideoTextureToPlatformTexture(%p) - Asked to copy an unsupported pixel format ('%s').", this, FourCC(pixelFormat).string().data());
return false;
}
IOSurfaceRef surface = CVPixelBufferGetIOSurface(image);
if (!surface)
return false;
auto orientation = videoFrame.orientation();
TextureContent content { reinterpret_cast<intptr_t>(surface), IOSurfaceGetSeed(surface), level, internalFormat, format, type, unpackFlipY, orientation };
auto it = m_knownContent.find(outputTexture);
if (it != m_knownContent.end() && it->value == content) {
// If the texture hasn't been modified since the last time we copied to it, and the
// image hasn't been modified since the last time it was copied, this is a no-op.
return true;
}
if (!m_context || !GraphicsContextGLCocoa::makeCurrent(m_display, m_context))
return false;
// Compute transform that undoes the `orientation`, e.g. moves the origin to top left.
// Even number of operations (flipX, flipY, swapXY) means a rotation.
// Odd number of operations means a rotation and a flip.
// `flipX` switches between Left and Right. `flipY` switches between Top and Bottom.
// `swapXY`switches LeftTop to TopLeft.
// Goal is to get to OriginTopLeft.
bool flipY = false; // Flip y coordinate, i.e. mirrored along the x-axis.
bool flipX = false; // Flip x coordinate, i.e. mirrored along the y-axis.
bool swapXY = false;
switch (videoFrame.orientation()) {
case ImageOrientation::FromImage:
case ImageOrientation::OriginTopLeft:
break;
case ImageOrientation::OriginTopRight:
flipX = true;
break;
case ImageOrientation::OriginBottomRight:
// Rotated 180 degrees.
flipY = true;
flipX = true;
break;
case ImageOrientation::OriginBottomLeft:
// Mirrored along the x-axis.
flipY = true;
break;
case ImageOrientation::OriginLeftTop:
// Mirrored along x-axis and rotated 270 degrees clock-wise.
swapXY = true;
break;
case ImageOrientation::OriginRightTop:
// Rotated 90 degrees clock-wise.
flipX = true;
swapXY = true;
break;
case ImageOrientation::OriginRightBottom:
// Mirror along x-axis and rotated 90 degrees clockwise.
flipY = true;
flipX = true;
swapXY = true;
break;
case ImageOrientation::OriginLeftBottom:
// Rotated 270 degrees clock-wise.
flipY = true;
swapXY = true;
break;
}
if (unpackFlipY == FlipY::Yes)
flipY = !flipY;
size_t sourceWidth = CVPixelBufferGetWidth(image);
size_t sourceHeight = CVPixelBufferGetHeight(image);
size_t width = swapXY ? sourceHeight : sourceWidth;
size_t height = swapXY ? sourceWidth : sourceHeight;
GL_Viewport(0, 0, width, height);
// The outputTexture might contain uninitialized content on early-outs. Clear it in cases
// autoClearTextureOnError is not reset.
auto autoClearTextureOnError = makeScopeExit([outputTexture, level, internalFormat, format, type] {
GL_BindTexture(GL_TEXTURE_2D, outputTexture);
GL_TexImage2D(GL_TEXTURE_2D, level, internalFormat, 0, 0, 0, format, type, nullptr);
GL_BindTexture(GL_TEXTURE_2D, 0);
});
// Allocate memory for the output texture.
GL_BindTexture(GL_TEXTURE_2D, outputTexture);
GL_TexImage2D(GL_TEXTURE_2D, level, internalFormat, width, height, 0, format, type, nullptr);
GL_FramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, outputTexture, level);
GLenum status = GL_CheckFramebufferStatus(GL_FRAMEBUFFER);
if (status != GL_FRAMEBUFFER_COMPLETE) {
LOG(WebGL, "GraphicsContextGLCVCocoa::copyVideoTextureToPlatformTexture(%p) - Unable to create framebuffer for outputTexture.", this);
return false;
}
GL_BindTexture(GL_TEXTURE_2D, 0);
// Bind and set up the textures for the video source.
auto yPlaneWidth = IOSurfaceGetWidthOfPlane(surface, 0);
auto yPlaneHeight = IOSurfaceGetHeightOfPlane(surface, 0);
auto uvPlaneWidth = IOSurfaceGetWidthOfPlane(surface, 1);
auto uvPlaneHeight = IOSurfaceGetHeightOfPlane(surface, 1);
GLenum videoTextureTarget = m_owner.drawingBufferTextureTarget();
GLuint uvTexture = 0;
GL_GenTextures(1, &uvTexture);
auto uvTextureCleanup = makeScopeExit([uvTexture] {
GL_DeleteTextures(1, &uvTexture);
});
GL_ActiveTexture(GL_TEXTURE1);
GL_BindTexture(videoTextureTarget, uvTexture);
GL_TexParameteri(videoTextureTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
GL_TexParameteri(videoTextureTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
GL_TexParameteri(videoTextureTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
GL_TexParameteri(videoTextureTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
auto uvHandle = WebCore::createPbufferAndAttachIOSurface(m_display, m_config, videoTextureTarget, EGL_IOSURFACE_READ_HINT_ANGLE, GL_RG, uvPlaneWidth, uvPlaneHeight, GL_UNSIGNED_BYTE, surface, 1);
if (!uvHandle)
return false;
auto uvHandleCleanup = makeScopeExit([display = m_display, uvHandle] {
WebCore::destroyPbufferAndDetachIOSurface(display, uvHandle);
});
GLuint yTexture = 0;
GL_GenTextures(1, &yTexture);
auto yTextureCleanup = makeScopeExit([yTexture] {
GL_DeleteTextures(1, &yTexture);
});
GL_ActiveTexture(GL_TEXTURE0);
GL_BindTexture(videoTextureTarget, yTexture);
GL_TexParameteri(videoTextureTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
GL_TexParameteri(videoTextureTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
GL_TexParameteri(videoTextureTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
GL_TexParameteri(videoTextureTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
auto yHandle = WebCore::createPbufferAndAttachIOSurface(m_display, m_config, videoTextureTarget, EGL_IOSURFACE_READ_HINT_ANGLE, GL_RED, yPlaneWidth, yPlaneHeight, GL_UNSIGNED_BYTE, surface, 0);
if (!yHandle)
return false;
auto yHandleCleanup = makeScopeExit([display = m_display, yHandle] {
destroyPbufferAndDetachIOSurface(display, yHandle);
});
// Configure the drawing parameters.
GL_Uniform1i(m_yTextureUniformLocation, 0);
GL_Uniform1i(m_uvTextureUniformLocation, 1);
GL_Uniform1i(m_yuvFlipYUniformLocation, flipY ? 1 : 0);
GL_Uniform1i(m_yuvFlipXUniformLocation, flipX ? 1 : 0);
GL_Uniform1i(m_yuvSwapXYUniformLocation, swapXY ? 1 : 0);
GL_Uniform2f(m_yTextureSizeUniformLocation, yPlaneWidth, yPlaneHeight);
GL_Uniform2f(m_uvTextureSizeUniformLocation, uvPlaneWidth, uvPlaneHeight);
auto range = pixelRangeFromPixelFormat(pixelFormat);
auto transferFunction = transferFunctionFromString(dynamic_cf_cast<CFStringRef>(CVBufferGetAttachment(image, kCVImageBufferYCbCrMatrixKey, nil)));
auto colorMatrix = YCbCrToRGBMatrixForRangeAndTransferFunction(range, transferFunction);
GL_UniformMatrix4fv(m_colorMatrixUniformLocation, 1, GL_FALSE, colorMatrix);
// Do the actual drawing.
GL_DrawArrays(GL_TRIANGLES, 0, 6);
m_knownContent.set(outputTexture, content);
autoClearTextureOnError.release();
return true;
}
void GraphicsContextGLCVCocoa::invalidateKnownTextureContent(GCGLuint texture)
{
m_knownContent.remove(texture);
}
}
#endif