void __stdcall tTVPMFPlayer::GetNumberOfFrame( int *f ) {
UINT64 avgTime;
HRESULT hr = MFFrameRateToAverageTimePerFrame( FPSNumerator, FPSDenominator, &avgTime );
if( SUCCEEDED(hr) ) {
*f = (int)( HnsDuration / avgTime );
}
}
void Scheduler::SetFrameRate(const MFRatio& fps)
{
UINT64 AvgTimePerFrame = 0;
// Convert to a duration.
MFFrameRateToAverageTimePerFrame(fps.Numerator, fps.Denominator, &AvgTimePerFrame);
m_PerFrameInterval = (MFTIME)AvgTimePerFrame;
// Calculate 1/4th of this value, because we use it frequently.
m_PerFrame_1_4th = m_PerFrameInterval / 4;
}
void __stdcall tTVPMFPlayer::GetFrame( int *f ) {
UINT64 avgTime;
*f = 0;
HRESULT hr = MFFrameRateToAverageTimePerFrame( FPSNumerator, FPSDenominator, &avgTime );
if( SUCCEEDED(hr) ) {
if( PresentationClock.p ) {
MFTIME mftime;
if( SUCCEEDED(hr = PresentationClock->GetTime(&mftime)) ) {
*f = (int)( mftime / avgTime );
}
}
}
}
void __stdcall tTVPMFPlayer::SetFrame( int f ) {
UINT64 avgTime;
HRESULT hr = MFFrameRateToAverageTimePerFrame( FPSNumerator, FPSDenominator, &avgTime );
if( SUCCEEDED(hr) ) {
LONGLONG requestTime = avgTime * (LONGLONG)f;
if( MediaSession.p && GetClockState() == MFCLOCK_STATE_RUNNING ) {
PROPVARIANT var;
PropVariantInit(&var);
var.vt = VT_I8;
var.hVal.QuadPart = requestTime;
MediaSession->Start( &GUID_NULL, &var );
PropVariantClear(&var);
}
}
}
void Scheduler::SetFrameRate(const MFRatio& fps)
{
AutoLock lock(m_schedCritSec);
if (m_bUseMfTimeCalc || fps.Numerator == 0 || fps.Denominator == 0)
{
UINT64 AvgTimePerFrame = 0;
// Convert to a duration.
MFFrameRateToAverageTimePerFrame(fps.Numerator, fps.Denominator, &AvgTimePerFrame);
m_PerFrameInterval = (MFTIME)AvgTimePerFrame;
}
else
m_PerFrameInterval = (MFTIME)10000000.0 / ((double)fps.Numerator / fps.Denominator);
// Calculate 1/4th of this value, because we use it frequently.
m_PerFrame_1_4th = m_PerFrameInterval / 4;
}
