//
// OnReceiveFirstSample
//
// Use the image just delivered to display a poster frame
//
void CVideoRenderer::OnReceiveFirstSample(IMediaSample *pMediaSample)
{
ASSERT(pMediaSample);
DoRenderSample(pMediaSample);
} // OnReceiveFirstSample
void CTextureRenderer::OnReceiveFirstSample( IMediaSample * pSample )
{
/* If the main thread is in MovieTexture_DShow::Create, kick: */
if( m_OneFrameDecoded.GetValue() == 0 )
m_OneFrameDecoded.Post();
DoRenderSample( pSample );
}
BOOL CMpcAudioRenderer::ScheduleSample(IMediaSample *pMediaSample)
{
REFERENCE_TIME StartSample;
REFERENCE_TIME EndSample;
// Is someone pulling our leg
if (pMediaSample == NULL) {
return FALSE;
}
// Get the next sample due up for rendering. If there aren't any ready
// then GetNextSampleTimes returns an error. If there is one to be done
// then it succeeds and yields the sample times. If it is due now then
// it returns S_OK other if it's to be done when due it returns S_FALSE
HRESULT hr = GetSampleTimes(pMediaSample, &StartSample, &EndSample);
if (FAILED(hr)) {
return FALSE;
}
// If we don't have a reference clock then we cannot set up the advise
// time so we simply set the event indicating an image to render. This
// will cause us to run flat out without any timing or synchronisation
if (hr == S_OK) {
EXECUTE_ASSERT(SetEvent((HANDLE) m_RenderEvent));
return TRUE;
}
if (m_dRate <= 1.1) {
ASSERT(m_dwAdvise == 0);
ASSERT(m_pClock);
WaitForSingleObject((HANDLE)m_RenderEvent,0);
hr = m_pClock->AdviseTime( (REFERENCE_TIME) m_tStart, StartSample, (HEVENT)(HANDLE) m_RenderEvent, &m_dwAdvise);
if (SUCCEEDED(hr)) {
return TRUE;
}
} else {
hr = DoRenderSample (pMediaSample);
}
// We could not schedule the next sample for rendering despite the fact
// we have a valid sample here. This is a fair indication that either
// the system clock is wrong or the time stamp for the sample is duff
ASSERT(m_dwAdvise == 0);
return FALSE;
}
