| /* |
| * 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_TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| GL_TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| GL_TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| GL_TexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| 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 |
