double MediaPlayerPrivateMediaFoundation::durationDouble() const
{
const double tenMegahertz = 10000000;
if (!m_mediaSource)
return 0;
IMFPresentationDescriptor* descriptor;
if (!SUCCEEDED(m_mediaSource->CreatePresentationDescriptor(&descriptor)))
return 0;
UINT64 duration;
if (!SUCCEEDED(descriptor->GetUINT64(MF_PD_DURATION, &duration)))
duration = 0;
descriptor->Release();
return static_cast<double>(duration) / tenMegahertz;
}
/** Set playback topology */
FIntPoint FImfVideoPlayer::SetPlaybackTopology( FImfSampleGrabberCallback* SampleGrabberCallback )
{
FIntPoint OutDimensions = FIntPoint( ForceInit );
HRESULT HResult = S_OK;
IMFPresentationDescriptor* PresentationDesc = NULL;
HResult = MediaSource->CreatePresentationDescriptor( &PresentationDesc );
check( SUCCEEDED( HResult ) );
IMFTopology* Topology = NULL;
HResult = MFCreateTopology( &Topology );
check( SUCCEEDED( HResult ) );
DWORD StreamCount = 0;
HResult = PresentationDesc->GetStreamDescriptorCount( &StreamCount );
check( SUCCEEDED( HResult ) );
for( uint32 i = 0; i < StreamCount; i++ )
{
BOOL bSelected = 0;
IMFStreamDescriptor* StreamDesc = NULL;
HResult = PresentationDesc->GetStreamDescriptorByIndex( i, &bSelected, &StreamDesc );
check( SUCCEEDED( HResult ) );
if( bSelected )
{
FIntPoint VideoDimensions = AddStreamToTopology( Topology, PresentationDesc, StreamDesc, SampleGrabberCallback );
if( VideoDimensions != FIntPoint( ForceInit ) )
OutDimensions = VideoDimensions;
}
StreamDesc->Release( );
}
HResult = MediaSession->SetTopology( 0, Topology );
check( SUCCEEDED( HResult ) );
Topology->Release( );
PresentationDesc->Release( );
return OutDimensions;
}
HRESULT CTedPlayer::GetDuration(MFTIME& hnsTime)
{
HRESULT hr = S_OK;
IMFPresentationDescriptor *pPD = NULL;
if(NULL != m_spSource.p)
{
IFC( m_spSource->CreatePresentationDescriptor( &pPD ) );
IFC( pPD->GetUINT64( MF_PD_DURATION, (UINT64*) &hnsTime ) );
}
else
{
hr = E_POINTER;
}
Cleanup:
if(pPD) pPD->Release();
return( hr );
}
