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// Copyright (C) 2016 The Qt Company Ltd and/or its subsidiary(-ies).
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "avfvideobuffer_p.h"
#include <rhi/qrhi.h>
#include <CoreVideo/CVMetalTexture.h>
#include <CoreVideo/CVMetalTextureCache.h>
#include <QtGui/qopenglcontext.h>
#include <private/qvideotexturehelper_p.h>
#include "qavfhelpers_p.h"
#import <AVFoundation/AVFoundation.h>
#import <Metal/Metal.h>
QT_USE_NAMESPACE
AVFVideoBuffer::AVFVideoBuffer(AVFVideoSinkInterface *sink, CVImageBufferRef buffer)
: QAbstractVideoBuffer(sink->rhi() ? QVideoFrame::RhiTextureHandle : QVideoFrame::NoHandle, sink->rhi()),
sink(sink),
m_buffer(buffer)
{
// m_type = QVideoFrame::NoHandle;
// qDebug() << "RHI" << m_rhi;
CVPixelBufferRetain(m_buffer);
const bool rhiIsOpenGL = sink && sink->rhi() && sink->rhi()->backend() == QRhi::OpenGLES2;
m_format = QAVFHelpers::videoFormatForImageBuffer(m_buffer, rhiIsOpenGL);
}
AVFVideoBuffer::~AVFVideoBuffer()
{
AVFVideoBuffer::unmap();
for (int i = 0; i < 3; ++i)
if (cvMetalTexture[i])
CFRelease(cvMetalTexture[i]);
#if defined(Q_OS_MACOS)
if (cvOpenGLTexture)
CVOpenGLTextureRelease(cvOpenGLTexture);
#elif defined(Q_OS_IOS)
if (cvOpenGLESTexture)
CFRelease(cvOpenGLESTexture);
#endif
CVPixelBufferRelease(m_buffer);
}
AVFVideoBuffer::MapData AVFVideoBuffer::map(QVideoFrame::MapMode mode)
{
MapData mapData;
if (m_mode == QVideoFrame::NotMapped) {
CVPixelBufferLockBaseAddress(m_buffer, mode == QVideoFrame::ReadOnly
? kCVPixelBufferLock_ReadOnly
: 0);
m_mode = mode;
}
mapData.nPlanes = CVPixelBufferGetPlaneCount(m_buffer);
Q_ASSERT(mapData.nPlanes <= 3);
if (!mapData.nPlanes) {
// single plane
mapData.bytesPerLine[0] = CVPixelBufferGetBytesPerRow(m_buffer);
mapData.data[0] = static_cast<uchar*>(CVPixelBufferGetBaseAddress(m_buffer));
mapData.size[0] = CVPixelBufferGetDataSize(m_buffer);
mapData.nPlanes = mapData.data[0] ? 1 : 0;
return mapData;
}
// For a bi-planar or tri-planar format we have to set the parameters correctly:
for (int i = 0; i < mapData.nPlanes; ++i) {
mapData.bytesPerLine[i] = CVPixelBufferGetBytesPerRowOfPlane(m_buffer, i);
mapData.size[i] = mapData.bytesPerLine[i]*CVPixelBufferGetHeightOfPlane(m_buffer, i);
mapData.data[i] = static_cast<uchar*>(CVPixelBufferGetBaseAddressOfPlane(m_buffer, i));
}
return mapData;
}
void AVFVideoBuffer::unmap()
{
if (m_mode != QVideoFrame::NotMapped) {
CVPixelBufferUnlockBaseAddress(m_buffer, m_mode == QVideoFrame::ReadOnly
? kCVPixelBufferLock_ReadOnly
: 0);
m_mode = QVideoFrame::NotMapped;
}
}
static MTLPixelFormat rhiTextureFormatToMetalFormat(QRhiTexture::Format f)
{
switch (f) {
default:
case QRhiTexture::UnknownFormat:
return MTLPixelFormatInvalid;
case QRhiTexture::RGBA8:
return MTLPixelFormatRGBA8Unorm;
case QRhiTexture::BGRA8:
return MTLPixelFormatBGRA8Unorm;
case QRhiTexture::R8:
return MTLPixelFormatR8Unorm;
case QRhiTexture::RG8:
return MTLPixelFormatRG8Unorm;
case QRhiTexture::R16:
return MTLPixelFormatR16Unorm;
case QRhiTexture::RG16:
return MTLPixelFormatRG16Unorm;
case QRhiTexture::RGBA16F:
return MTLPixelFormatRGBA16Float;
case QRhiTexture::RGBA32F:
return MTLPixelFormatRGBA32Float;
case QRhiTexture::R16F:
return MTLPixelFormatR16Float;
case QRhiTexture::R32F:
return MTLPixelFormatR32Float;
}
}
quint64 AVFVideoBuffer::textureHandle(QRhi *, int plane) const
{
auto *textureDescription = QVideoTextureHelper::textureDescription(m_format.pixelFormat());
int bufferPlanes = CVPixelBufferGetPlaneCount(m_buffer);
// qDebug() << "texture handle" << plane << m_rhi << (m_rhi->backend() == QRhi::Metal) << bufferPlanes;
if (plane > 0 && plane >= bufferPlanes)
return 0;
if (!m_rhi)
return 0;
if (m_rhi->backend() == QRhi::Metal) {
if (!cvMetalTexture[plane]) {
size_t width = CVPixelBufferGetWidth(m_buffer);
size_t height = CVPixelBufferGetHeight(m_buffer);
width = textureDescription->widthForPlane(width, plane);
height = textureDescription->heightForPlane(height, plane);
// Create a CoreVideo pixel buffer backed Metal texture image from the texture cache.
QMutexLocker locker(sink->textureCacheMutex());
if (!metalCache && sink->cvMetalTextureCache)
metalCache = CVMetalTextureCacheRef(CFRetain(sink->cvMetalTextureCache));
if (!metalCache) {
qWarning("cannot create texture, Metal texture cache was released?");
return {};
}
auto ret = CVMetalTextureCacheCreateTextureFromImage(
kCFAllocatorDefault,
metalCache,
m_buffer, nil,
rhiTextureFormatToMetalFormat(textureDescription->textureFormat[plane]),
width, height,
plane,
&cvMetalTexture[plane]);
if (ret != kCVReturnSuccess)
qWarning() << "texture creation failed" << ret;
// auto t = CVMetalTextureGetTexture(cvMetalTexture[plane]);
// qDebug() << " metal texture is" << quint64(cvMetalTexture[plane]) << width << height;
// qDebug() << " " << t.iosurfacePlane << t.pixelFormat << t.width << t.height;
}
// Get a Metal texture using the CoreVideo Metal texture reference.
// qDebug() << " -> " << quint64(CVMetalTextureGetTexture(cvMetalTexture[plane]));
return cvMetalTexture[plane] ? quint64(CVMetalTextureGetTexture(cvMetalTexture[plane])) : 0;
} else if (m_rhi->backend() == QRhi::OpenGLES2) {
#if QT_CONFIG(opengl)
#ifdef Q_OS_MACOS
CVOpenGLTextureCacheFlush(sink->cvOpenGLTextureCache, 0);
// Create a CVPixelBuffer-backed OpenGL texture image from the texture cache.
const CVReturn cvret = CVOpenGLTextureCacheCreateTextureFromImage(
kCFAllocatorDefault,
sink->cvOpenGLTextureCache,
m_buffer,
nil,
&cvOpenGLTexture);
if (cvret != kCVReturnSuccess)
qWarning() << "OpenGL texture creation failed" << cvret;
Q_ASSERT(CVOpenGLTextureGetTarget(cvOpenGLTexture) == GL_TEXTURE_RECTANGLE);
// Get an OpenGL texture name from the CVPixelBuffer-backed OpenGL texture image.
return CVOpenGLTextureGetName(cvOpenGLTexture);
#endif
#ifdef Q_OS_IOS
CVOpenGLESTextureCacheFlush(sink->cvOpenGLESTextureCache, 0);
// Create a CVPixelBuffer-backed OpenGL texture image from the texture cache.
const CVReturn cvret = CVOpenGLESTextureCacheCreateTextureFromImage(
kCFAllocatorDefault,
sink->cvOpenGLESTextureCache,
m_buffer,
nil,
GL_TEXTURE_2D,
GL_RGBA,
CVPixelBufferGetWidth(m_buffer),
CVPixelBufferGetHeight(m_buffer),
GL_RGBA,
GL_UNSIGNED_BYTE,
0,
&cvOpenGLESTexture);
if (cvret != kCVReturnSuccess)
qWarning() << "OpenGL ES texture creation failed" << cvret;
// Get an OpenGL texture name from the CVPixelBuffer-backed OpenGL texture image.
return CVOpenGLESTextureGetName(cvOpenGLESTexture);
#endif
#endif
}
return 0;
}
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