//-------------------------------------------------------------------
// Name: DeliverSample
// Description: Delivers a sample by sending an MEMediaSample event.
//-------------------------------------------------------------------
HRESULT WavStream::DeliverSample(IMFSample *pSample)
{
HRESULT hr = S_OK;
// Send the MEMediaSample event with the new sample.
hr = QueueEventWithIUnknown(this, MEMediaSample, hr, pSample);
// See if we reached the end of the stream.
if (SUCCEEDED(hr))
{
hr = CheckEndOfStream(); // This method sends MEEndOfStream if needed.
}
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;
}
