示例#1
0
static void
VDADecoderCallback (void *decompressionOutputRefCon, CFDictionaryRef frameInfo, OSStatus status, uint32_t infoFlags, CVImageBufferRef imageBuffer)
{
	MoonVDADecoder *decoder = (MoonVDADecoder *) decompressionOutputRefCon;
	VideoStream *vs = (VideoStream *) decoder->GetStream ();

	// FIXME: Is this always 1 thread?  Can we optimize this
	decoder->GetDeployment ()->RegisterThread ();

	Deployment::SetCurrent (decoder->GetDeployment ());

	if (imageBuffer == NULL) {
		return;
	}

	OSType format_type = CVPixelBufferGetPixelFormatType (imageBuffer);
	if (format_type != kCVPixelFormatType_422YpCbCr8) {
		g_warning ("Mismatched format in VDA");
		return;
	}

	MediaFrame *mf = (MediaFrame *) CFDictionaryGetValue (frameInfo, CFSTR ("MoonMediaFrame"));

	mf->AddState (MediaFrameVUY2);
	mf->FreeBuffer ();
	mf->SetBufLen (0);

	mf->srcSlideY = 0;
	mf->srcSlideH = vs->GetHeight ();

	mf->width = vs->GetWidth ();
	mf->height = vs->GetHeight ();

	CVPixelBufferLockBaseAddress (imageBuffer, 0);

	mf->data_stride [0] = (uint8_t *) CVPixelBufferGetBaseAddress (imageBuffer);
	mf->srcStride [0] = CVPixelBufferGetBytesPerRow (imageBuffer);

	mf->AddState (MediaFrameDecoded);

	mf->decoder_specific_data = imageBuffer;
	CVPixelBufferRetain (imageBuffer);

	decoder->ReportDecodeFrameCompleted (mf);

	mf->unref ();
}