//todo: put the process work to background thread to speed up.
public HResult ProcessSample(IMFSample videoSample)
{
HResult hr = HResult.S_OK;
MFTOutputStatusFlags mftOutFlags;
MFTOutputStreamInfo StreamInfo;
if (videoSample == null)
{
return(hr);
}
pDecoderTransform.ProcessInput(0, videoSample, 0);
pDecoderTransform.GetOutputStatus(out mftOutFlags);
pDecoderTransform.GetOutputStreamInfo(0, out StreamInfo);
while (true)
{
IMFMediaBuffer resultBuffer;
//reset the cache buffer.
MFExtern.MFCreateMemoryBuffer(StreamInfo.cbSize, out resultBuffer);
_mftOutSample.RemoveAllBuffers();
_mftOutSample.AddBuffer(resultBuffer);
ProcessOutputStatus outputStatus;
var mftProcessOutput = pDecoderTransform.ProcessOutput(0, 1, _mftOutBufferContainer, out outputStatus);
if (mftProcessOutput == HResult.MF_E_TRANSFORM_NEED_MORE_INPUT)
{
//continue provice input data.
break;
}
else if (_mftOutBufferContainer[0].dwStatus == MFTOutputDataBufferFlags.Incomplete)
{
//todo: the decoded data include more than one samples,we need to receive all data items.
}
else
{
IMFMediaBuffer buffer;
_mftOutSample.ConvertToContiguousBuffer(out buffer);
invokeDecodeComplete(buffer, StreamInfo.cbSize);
}
}
return(hr);
}