HRESULT CWASAPIRenderFilter::PutSample(IMediaSample* pSample)
{
HRESULT hr = CQueuedAudioSink::PutSample(pSample);
if (m_filterState != State_Running)
Log("Buffering...%6.3f", BufferredDataDuration() / 10000000.0);
return hr;
}
HRESULT CWASAPIRenderFilter::PutSample(IMediaSample* pSample)
{
HRESULT hr = CQueuedAudioSink::PutSample(pSample);
if (m_filterState != State_Running)
{
CheckBufferStatus();
Log("Buffering...%5d ms", BufferredDataDuration() / 10000);
}
return hr;
}
void CWASAPIRenderFilter::CheckBufferStatus()
{
CAutoLock lock(&m_csResources);
if (m_hNeedMoreSamples)
{
REFERENCE_TIME bufferedAmount = BufferredDataDuration();
if (m_hNeedMoreSamples && bufferedAmount < m_dOutputBufferSize)
{
//Log("CWASAPIRenderFilter::Render - need more data - buffer: %6.3f", bufferedAmount / 10000000.0);
SetEvent(*m_hNeedMoreSamples);
}
else
{
//Log("CWASAPIRenderFilter::Render - dont need more data - buffer: %6.3f", bufferedAmount / 10000000.0);
ResetEvent(*m_hNeedMoreSamples);
}
}
}
HRESULT CWASAPIRenderFilter::CheckStreamTimeline(IMediaSample* pSample, REFERENCE_TIME* pDueTime, UINT32 sampleOffset)
{
*pDueTime = 0;
if (!pSample)
return S_FALSE;
REFERENCE_TIME rtHWTime = 0;
REFERENCE_TIME rtRefClock = 0;
REFERENCE_TIME rtStop = 0;
REFERENCE_TIME rtStart = 0;
REFERENCE_TIME rtDuration = 0;
bool resync = false;
HRESULT hr = pSample->GetTime(&rtStart, &rtStop);
if (FAILED(hr))
{
// Render all samples flat that dont have presentation time
m_nSampleNum++;
return MPAR_S_RENDER_SAMPLE;
}
if (m_nSampleNum == 0)
m_rtNextSampleTime = rtStart;
long sampleLength = pSample->GetActualDataLength();
UINT nFrames = sampleLength / m_pInputFormat->Format.nBlockAlign;
rtDuration = nFrames * UNITS / m_pInputFormat->Format.nSamplesPerSec;
if (SUCCEEDED(m_pClock->GetHWTime(&rtRefClock, &rtHWTime)))
{
rtRefClock -= m_rtStart;
rtHWTime -= m_rtHwStart;
}
else
{
m_nSampleNum++;
return MPAR_S_RENDER_SAMPLE;
}
if (m_pSettings->m_bLogSampleTimes)
Log(" sample start: %6.3f stop: %6.3f dur: %6.3f diff: %6.3f rtHWTime: %6.3f rtRefClock: %6.3f early: %6.3f queue: %d %6.3f",
rtStart / 10000000.0, rtStop / 10000000.0, rtDuration / 10000000.0, (rtStart - m_rtNextSampleTime) / 10000000.0,
rtHWTime / 10000000.0, rtRefClock / 10000000.0, (rtStart - rtHWTime) / 10000000.0, m_inputQueue.size(), BufferredDataDuration() / 10000000.0);
// Try to keep the A/V sync when data has been dropped
if (abs(rtStart - m_rtNextSampleTime) > MAX_SAMPLE_TIME_ERROR)
{
resync = true;
Log(" Discontinuity detected: diff: %7.3f ms MAX_SAMPLE_TIME_ERROR: %7.3f ms resync: %d", ((double)rtStart - (double)m_rtNextSampleTime) / 10000.0, (double)MAX_SAMPLE_TIME_ERROR / 10000.0, resync);
}
m_rtNextSampleTime = rtStart + rtDuration;
REFERENCE_TIME offsetDelay = 0;
if (sampleOffset > 0)
offsetDelay = sampleOffset / m_pInputFormat->Format.nBlockAlign * UNITS / m_pInputFormat->Format.nSamplesPerSec;
*pDueTime = rtStart + offsetDelay;
if (*pDueTime < rtHWTime - Latency())
{
// TODO implement partial sample dropping
Log(" dropping late sample - pDueTime: %6.3f rtHWTime: %6.3f", *pDueTime / 10000000.0, rtHWTime / 10000000.0);
m_nSampleNum = 0;
return MPAR_S_DROP_SAMPLE;
}
else if ((m_nSampleNum == 0 && *pDueTime > rtHWTime) || resync)
{
m_nSampleNum++;
if (m_pSettings->m_bLogSampleTimes)
Log(" MPAR_S_WAIT_RENDER_TIME - %6.3f", *pDueTime / 10000000.0);
return MPAR_S_WAIT_RENDER_TIME;
}
m_nSampleNum++;
return MPAR_S_RENDER_SAMPLE;
}
