// Called when the presentation clock stops.
HRESULT STDMETHODCALLTYPE EVRCustomPresenter::OnClockStop(MFTIME hnssSystemTime)
{
Log("EVRCustomPresenter::OnClockStop");
HRESULT hr = S_OK;
CAutoLock lock(this);
// We cannot stop after shutdown
hr = CheckShutdown();
CHECK_HR(hr, "EVRCustomPresenter::OnClockStop cannot stop after shutdown");
// set render state to stop and flush queue
if (m_RenderState != RENDER_STATE_STOPPED)
{
m_RenderState = RENDER_STATE_STOPPED;
Flush();
// If we are in the middle of frame-stepping, cancel it now.
if (m_FrameStep.state != FRAMESTEP_NONE)
{
CancelFrameStep();
}
}
return hr;
}
// Called when the rate changes on the presentation clock.
HRESULT STDMETHODCALLTYPE EVRCustomPresenter::OnClockSetRate(MFTIME hnsSystemTime, float fRate)
{
Log("EVRCustomPresenter::OnClockSetRate (rate=%f)", fRate);
HRESULT hr = S_OK;
CAutoLock lock(this);
// We cannot set the rate after shutdown.
hr = CheckShutdown();
CHECK_HR(hr, "EVRCustomPresenter::OnClockRestart cannot set rate after shutdown");
// If the rate is changing from zero (scrubbing) to non-zero, cancel the frame-step operation.
if ((m_fRate == 0.0f) && (fRate != 0.0f))
{
CancelFrameStep();
m_FrameStep.samples.Clear();
}
m_fRate = fRate;
// Tell the scheduler about the new rate.
m_scheduler.SetClockRate(fRate);
return hr;
}
// Sends a message to the video presenter.
HRESULT STDMETHODCALLTYPE EVRCustomPresenter::ProcessMessage(MFVP_MESSAGE_TYPE eMessage, ULONG_PTR ulParam)
{
// Albert: Don't produce so much log output
//Log("EVRCustomPresenter::ProcessMessage");
HRESULT hr = S_OK;
CAutoLock lock(this);
hr = CheckShutdown();
CHECK_HR(hr, "EVRCustomPresenter::ProcessMessage presenter is shutdown");
switch (eMessage)
{
// Flush all pending samples.
case MFVP_MESSAGE_FLUSH:
Log("ProcessMessage: MFVP_MESSAGE_FLUSH");
hr = Flush();
break;
// Renegotiate the media type with the mixer.
case MFVP_MESSAGE_INVALIDATEMEDIATYPE:
Log("ProcessMessage: MFVP_MESSAGE_INVALIDATEMEDIATYPE");
hr = RenegotiateMediaType();
break;
// The mixer received a new input sample.
case MFVP_MESSAGE_PROCESSINPUTNOTIFY:
// Albert: Don't produce so much log output
//Log("ProcessMessage: MFVP_MESSAGE_PROCESSINPUTNOTIFY");
hr = ProcessInputNotify();
break;
// Streaming is about to start.
case MFVP_MESSAGE_BEGINSTREAMING:
Log("ProcessMessage: MFVP_MESSAGE_BEGINSTREAMING");
hr = BeginStreaming();
break;
// Streaming has ended. (The EVR has stopped.)
case MFVP_MESSAGE_ENDSTREAMING:
Log("ProcessMessage: MFVP_MESSAGE_ENDSTREAMING");
hr = EndStreaming();
break;
// All input streams have ended.
case MFVP_MESSAGE_ENDOFSTREAM:
Log("ProcessMessage: MFVP_MESSAGE_ENDOFSTREAM");
// Set the end of stream flag.
m_bEndStreaming = TRUE;
// Check if it's time to send the EC_COMPLETE event to the EVR.
hr = CheckEndOfStream();
break;
// Frame-stepping is starting.
case MFVP_MESSAGE_STEP:
Log("ProcessMessage: MFVP_MESSAGE_STEP");
hr = PrepareFrameStep(LODWORD(ulParam));
break;
// Cancels frame-stepping.
case MFVP_MESSAGE_CANCELSTEP:
Log("ProcessMessage: MFVP_MESSAGE_CANCELSTEP");
hr = CancelFrameStep();
break;
// Unknown message. (This case should never occur.)
default:
Log("ProcessMessage: Unknown Message");
hr = E_INVALIDARG;
break;
}
return hr;
}
