// Create a renderer for the media type on the given stream descriptor
HRESULT CTedMediaFileRenderer::CreateRendererForStream(IMFStreamDescriptor* pSD, IMFTopologyNode** ppRendererNode)
{
HRESULT hr;
CComPtr<IMFMediaTypeHandler> spMediaTypeHandler;
CComPtr<IMFActivate> spRendererActivate;
CComPtr<IMFMediaSink> spRendererSink;
CComPtr<IMFStreamSink> spRendererStreamSink;
IMFTopologyNode* pRendererNode;
GUID gidMajorType;
IFC( MFCreateTopologyNode(MF_TOPOLOGY_OUTPUT_NODE, &pRendererNode) );
IFC( pSD->GetMediaTypeHandler( &spMediaTypeHandler ) );
IFC( spMediaTypeHandler->GetMajorType( &gidMajorType ) );
if(MFMediaType_Audio == gidMajorType)
{
IFC( MFCreateAudioRendererActivate(&spRendererActivate) );
IFC( spRendererActivate->ActivateObject(IID_IMFMediaSink, (void**) &spRendererSink) );
IFC( spRendererSink->GetStreamSinkById(0, &spRendererStreamSink) );
IFC( pRendererNode->SetObject(spRendererStreamSink) );
}
else if(MFMediaType_Video == gidMajorType)
{
HWND hVideoWindow;
IFC( m_spVideoWindowHandler->GetVideoWindow((LONG_PTR*) &hVideoWindow) );
IFC( MFCreateVideoRendererActivate(hVideoWindow, &spRendererActivate) );
IFC( spRendererActivate->ActivateObject(IID_IMFMediaSink, (void**) &spRendererSink) );
IFC( spRendererSink->GetStreamSinkById(0, &spRendererStreamSink) );
IFC( pRendererNode->SetObject(spRendererStreamSink) );
}
else
{
// Do not have renderers for any other major types
}
*ppRendererNode = pRendererNode;
Cleanup:
return hr;
}
