CopyResult copyFrame(const VideoFrame &videoFrame, Field field) override
{
Q_UNUSED(field)
{
QMutexLocker locker(&m_buffersMutex);
const int idx = m_buffers.indexOf(videoFrame.surfaceId);
if (idx < 0)
return CopyNotReady;
m_buffers.removeAt(idx);
while (m_buffers.size() > 5)
CVPixelBufferRelease((CVPixelBufferRef)m_buffers.takeFirst());
}
CVPixelBufferRef pixelBuffer = (CVPixelBufferRef)videoFrame.surfaceId;
CGLContextObj glCtx = CGLGetCurrentContext();
IOSurfaceRef surface = CVPixelBufferGetIOSurface(pixelBuffer);
const OSType pixelFormat = IOSurfaceGetPixelFormat(surface);
if (pixelFormat != kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange)
{
CVPixelBufferRelease(pixelBuffer);
return CopyError;
}
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, m_glTextures[0]);
if (CGLTexImageIOSurface2D(glCtx, GL_TEXTURE_RECTANGLE_ARB, GL_R8, videoFrame.size.getWidth(0), videoFrame.size.getHeight(0), GL_RED, GL_UNSIGNED_BYTE, surface, 0) != kCGLNoError)
{
CVPixelBufferRelease(pixelBuffer);
return CopyError;
}
glBindTexture(GL_TEXTURE_RECTANGLE_ARB, m_glTextures[1]);
if (CGLTexImageIOSurface2D(glCtx, GL_TEXTURE_RECTANGLE_ARB, GL_RG8, videoFrame.size.getWidth(1), videoFrame.size.getHeight(1), GL_RG, GL_UNSIGNED_BYTE, surface, 1) != kCGLNoError)
{
CVPixelBufferRelease(pixelBuffer);
return CopyError;
}
CVPixelBufferRelease(m_pixelBufferToRelease);
m_pixelBufferToRelease = pixelBuffer;
return CopyOk;
}
bool CRendererVTB::UploadTexture(int index)
{
YUVBUFFER &buf = m_buffers[index];
YUVPLANE (&planes)[YuvImage::MAX_PLANES] = m_buffers[index].fields[0];
VTB::CVideoBufferVTB *vb = dynamic_cast<VTB::CVideoBufferVTB*>(buf.videoBuffer);
if (!vb)
{
return false;
}
CVImageBufferRef cvBufferRef = vb->GetPB();
glEnable(m_textureTarget);
// It is the fastest way to render a CVPixelBuffer backed
// with an IOSurface as there is no CPU -> GPU upload.
CGLContextObj cgl_ctx = (CGLContextObj)g_Windowing.GetCGLContextObj();
IOSurfaceRef surface = CVPixelBufferGetIOSurface(cvBufferRef);
OSType format_type = IOSurfaceGetPixelFormat(surface);
if (format_type != kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange)
{
return false;
}
GLsizei surfplanes = IOSurfaceGetPlaneCount(surface);
if (surfplanes != 2)
{
return false;
}
GLsizei widthY = IOSurfaceGetWidthOfPlane(surface, 0);
GLsizei widthUV = IOSurfaceGetWidthOfPlane(surface, 1);
GLsizei heightY = IOSurfaceGetHeightOfPlane(surface, 0);
GLsizei heightUV = IOSurfaceGetHeightOfPlane(surface, 1);
glBindTexture(m_textureTarget, planes[0].id);
CGLTexImageIOSurface2D(cgl_ctx, m_textureTarget, GL_LUMINANCE,
widthY, heightY, GL_LUMINANCE, GL_UNSIGNED_BYTE, surface, 0);
glTexParameteri(m_textureTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(m_textureTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(m_textureTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(m_textureTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glBindTexture(m_textureTarget, planes[1].id);
CGLTexImageIOSurface2D(cgl_ctx, m_textureTarget, GL_LUMINANCE_ALPHA,
widthUV, heightUV, GL_LUMINANCE_ALPHA, GL_UNSIGNED_BYTE, surface, 1);
glTexParameteri(m_textureTarget, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(m_textureTarget, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(m_textureTarget, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(m_textureTarget, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glBindTexture(m_textureTarget, 0);
glDisable(m_textureTarget);
CalculateTextureSourceRects(index, 3);
return true;
}
