int CDVDVideoCodecVDA::Decode(BYTE* pData, int iSize, double dts, double pts)
{
CCocoaAutoPool pool;
//
if (pData)
{
OSStatus status;
double sort_time;
uint32_t avc_flags = 0;
CFDataRef avc_demux;
CFDictionaryRef avc_time;
if (m_convert_bytestream)
{
// convert demuxer packet from bytestream (AnnexB) to bitstream
ByteIOContext *pb;
int demuxer_bytes;
uint8_t *demuxer_content;
if(m_dllAvFormat->url_open_dyn_buf(&pb) < 0)
{
return VC_ERROR;
}
demuxer_bytes = avc_parse_nal_units(m_dllAvFormat, pb, pData, iSize);
demuxer_bytes = m_dllAvFormat->url_close_dyn_buf(pb, &demuxer_content);
avc_demux = CFDataCreate(kCFAllocatorDefault, demuxer_content, demuxer_bytes);
m_dllAvUtil->av_free(demuxer_content);
}
else
{
avc_demux = CFDataCreate(kCFAllocatorDefault, pData, iSize);
}
sort_time = (CurrentHostCounter() * 1000.0) / CurrentHostFrequency();
avc_time = CreateDictionaryWithDisplayTime(sort_time - m_sort_time_offset, dts, pts);
if (m_DropPictures)
avc_flags = kVDADecoderDecodeFlags_DontEmitFrame;
status = m_dll->VDADecoderDecode((VDADecoder)m_vda_decoder, avc_flags, avc_demux, avc_time);
CFRelease(avc_time);
CFRelease(avc_demux);
if (status != kVDADecoderNoErr)
{
CLog::Log(LOGNOTICE, "%s - VDADecoderDecode failed, status(%d)", __FUNCTION__, (int)status);
return VC_ERROR;
}
}
// TODO: queue depth is related to the number of reference frames in encoded h.264.
// so we need to buffer until we get N ref frames + 1.
if (m_queue_depth < 4)
{
return VC_BUFFER;
}
return VC_PICTURE | VC_BUFFER;
}
int CDVDVideoCodecVDA::Decode(uint8_t* pData, int iSize, double dts, double pts)
{
CCocoaAutoPool pool;
//
if (pData)
{
m_bitstream->Convert(pData, iSize);
CFDataRef avc_demux = CFDataCreate(kCFAllocatorDefault,
m_bitstream->GetConvertBuffer(), m_bitstream->GetConvertSize());
CFDictionaryRef avc_time = CreateDictionaryWithDisplayTime(m_sort_time++, dts, pts);
uint32_t avc_flags = 0;
if (m_DropPictures)
avc_flags = kVDADecoderDecodeFlags_DontEmitFrame;
OSStatus status = VDADecoderDecode((VDADecoder)m_vda_decoder, avc_flags, avc_demux, avc_time);
CFRelease(avc_time);
CFRelease(avc_demux);
if (status != kVDADecoderNoErr)
{
CLog::Log(LOGNOTICE, "%s - VDADecoderDecode failed, status(%d)", __FUNCTION__, (int)status);
return VC_ERROR;
}
}
if (!m_decode_async)
{
// force synchronous decode to fix issues with ATI GPUs,
// we still have to sort returned frames by pts to handle out-of-order demuxer packets.
VDADecoderFlush((VDADecoder)m_vda_decoder, kVDADecoderFlush_EmitFrames);
}
if (m_queue_depth < m_max_ref_frames)
return VC_BUFFER;
return VC_PICTURE;
}
