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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include <qavfhelpers_p.h>
#include <CoreMedia/CMFormatDescription.h>
#include <CoreVideo/CoreVideo.h>
#include <qdebug.h>
#import <CoreVideo/CoreVideo.h>
static QVideoFrameFormat::ColorRange colorRangeForPixelFormat(unsigned avPixelFormat)
{
switch (avPixelFormat) {
case kCVPixelFormatType_420YpCbCr8PlanarFullRange:
case kCVPixelFormatType_420YpCbCr8BiPlanarFullRange:
case kCVPixelFormatType_420YpCbCr10BiPlanarFullRange:
return QVideoFrameFormat::ColorRange_Full;
case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
case kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange:
case kCVPixelFormatType_422YpCbCr8:
case kCVPixelFormatType_422YpCbCr8_yuvs:
return QVideoFrameFormat::ColorRange_Video;
default:
return QVideoFrameFormat::ColorRange_Unknown;
}
}
QVideoFrameFormat::PixelFormat QAVFHelpers::fromCVPixelFormat(unsigned avPixelFormat)
{
switch (avPixelFormat) {
case kCVPixelFormatType_32ARGB:
return QVideoFrameFormat::Format_ARGB8888;
case kCVPixelFormatType_32BGRA:
return QVideoFrameFormat::Format_BGRA8888;
case kCVPixelFormatType_420YpCbCr8Planar:
case kCVPixelFormatType_420YpCbCr8PlanarFullRange:
return QVideoFrameFormat::Format_YUV420P;
case kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange:
case kCVPixelFormatType_420YpCbCr8BiPlanarFullRange:
return QVideoFrameFormat::Format_NV12;
case kCVPixelFormatType_420YpCbCr10BiPlanarVideoRange:
case kCVPixelFormatType_420YpCbCr10BiPlanarFullRange:
return QVideoFrameFormat::Format_P010;
case kCVPixelFormatType_422YpCbCr8:
return QVideoFrameFormat::Format_UYVY;
case kCVPixelFormatType_422YpCbCr8_yuvs:
return QVideoFrameFormat::Format_YUYV;
case kCVPixelFormatType_OneComponent8:
return QVideoFrameFormat::Format_Y8;
case q_kCVPixelFormatType_OneComponent16:
return QVideoFrameFormat::Format_Y16;
case kCMVideoCodecType_JPEG:
case kCMVideoCodecType_JPEG_OpenDML:
return QVideoFrameFormat::Format_Jpeg;
default:
return QVideoFrameFormat::Format_Invalid;
}
}
bool QAVFHelpers::toCVPixelFormat(QVideoFrameFormat::PixelFormat qtFormat, unsigned &conv)
{
switch (qtFormat) {
case QVideoFrameFormat::Format_ARGB8888:
conv = kCVPixelFormatType_32ARGB;
break;
case QVideoFrameFormat::Format_BGRA8888:
conv = kCVPixelFormatType_32BGRA;
break;
case QVideoFrameFormat::Format_YUV420P:
conv = kCVPixelFormatType_420YpCbCr8PlanarFullRange;
break;
case QVideoFrameFormat::Format_NV12:
conv = kCVPixelFormatType_420YpCbCr8BiPlanarFullRange;
break;
case QVideoFrameFormat::Format_P010:
conv = kCVPixelFormatType_420YpCbCr10BiPlanarFullRange;
break;
case QVideoFrameFormat::Format_UYVY:
conv = kCVPixelFormatType_422YpCbCr8;
break;
case QVideoFrameFormat::Format_YUYV:
conv = kCVPixelFormatType_422YpCbCr8_yuvs;
break;
case QVideoFrameFormat::Format_Y8:
conv = kCVPixelFormatType_OneComponent8;
break;
case QVideoFrameFormat::Format_Y16:
conv = q_kCVPixelFormatType_OneComponent16;
break;
default:
return false;
}
return true;
}
QVideoFrameFormat QAVFHelpers::videoFormatForImageBuffer(CVImageBufferRef buffer, bool openGL)
{
auto avPixelFormat = CVPixelBufferGetPixelFormatType(buffer);
auto pixelFormat = fromCVPixelFormat(avPixelFormat);
if (openGL) {
if (avPixelFormat == kCVPixelFormatType_32BGRA)
pixelFormat = QVideoFrameFormat::Format_SamplerRect;
else
qWarning() << "Accelerated macOS OpenGL video supports BGRA only, got CV pixel format" << avPixelFormat;
}
size_t width = CVPixelBufferGetWidth(buffer);
size_t height = CVPixelBufferGetHeight(buffer);
QVideoFrameFormat format(QSize(width, height), pixelFormat);
auto colorSpace = QVideoFrameFormat::ColorSpace_Undefined;
auto colorTransfer = QVideoFrameFormat::ColorTransfer_Unknown;
if (CFStringRef cSpace = reinterpret_cast<CFStringRef>(
CVBufferGetAttachment(buffer, kCVImageBufferYCbCrMatrixKey, nullptr))) {
if (CFEqual(cSpace, kCVImageBufferYCbCrMatrix_ITU_R_709_2)) {
colorSpace = QVideoFrameFormat::ColorSpace_BT709;
} else if (CFEqual(cSpace, kCVImageBufferYCbCrMatrix_ITU_R_601_4)
|| CFEqual(cSpace, kCVImageBufferYCbCrMatrix_SMPTE_240M_1995)) {
colorSpace = QVideoFrameFormat::ColorSpace_BT601;
} else if (@available(macOS 10.11, iOS 9.0, *)) {
if (CFEqual(cSpace, kCVImageBufferYCbCrMatrix_ITU_R_2020)) {
colorSpace = QVideoFrameFormat::ColorSpace_BT2020;
}
}
}
if (CFStringRef cTransfer = reinterpret_cast<CFStringRef>(
CVBufferGetAttachment(buffer, kCVImageBufferTransferFunctionKey, nullptr))) {
if (CFEqual(cTransfer, kCVImageBufferTransferFunction_ITU_R_709_2)) {
colorTransfer = QVideoFrameFormat::ColorTransfer_BT709;
} else if (CFEqual(cTransfer, kCVImageBufferTransferFunction_SMPTE_240M_1995)) {
colorTransfer = QVideoFrameFormat::ColorTransfer_BT601;
} else if (CFEqual(cTransfer, kCVImageBufferTransferFunction_sRGB)) {
colorTransfer = QVideoFrameFormat::ColorTransfer_Gamma22;
} else if (CFEqual(cTransfer, kCVImageBufferTransferFunction_UseGamma)) {
auto gamma = reinterpret_cast<CFNumberRef>(
CVBufferGetAttachment(buffer, kCVImageBufferGammaLevelKey, nullptr));
double g;
CFNumberGetValue(gamma, kCFNumberFloat32Type, &g);
// These are best fit values given what we have in our enum
if (g < 0.8)
; // unknown
else if (g < 1.5)
colorTransfer = QVideoFrameFormat::ColorTransfer_Linear;
else if (g < 2.1)
colorTransfer = QVideoFrameFormat::ColorTransfer_BT709;
else if (g < 2.5)
colorTransfer = QVideoFrameFormat::ColorTransfer_Gamma22;
else if (g < 3.2)
colorTransfer = QVideoFrameFormat::ColorTransfer_Gamma28;
}
if (@available(macOS 10.12, iOS 11.0, *)) {
if (CFEqual(cTransfer, kCVImageBufferTransferFunction_ITU_R_2020))
colorTransfer = QVideoFrameFormat::ColorTransfer_BT709;
}
if (@available(macOS 10.12, iOS 11.0, *)) {
if (CFEqual(cTransfer, kCVImageBufferTransferFunction_ITU_R_2100_HLG)) {
colorTransfer = QVideoFrameFormat::ColorTransfer_STD_B67;
} else if (CFEqual(cTransfer, kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ)) {
colorTransfer = QVideoFrameFormat::ColorTransfer_ST2084;
}
}
}
format.setColorRange(colorRangeForPixelFormat(avPixelFormat));
format.setColorSpace(colorSpace);
format.setColorTransfer(colorTransfer);
return format;
}
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