HRESULT FMPlayerDShow::BuildTheGraph()
{
CComQIPtr<IGraphBuilder> pGraphBuilder = m_FilterGraph;
HRESULT hr = E_FAIL;
if (pGraphBuilder)
{
CComPtr<IPin> Pin1 = GetOutPin(m_AviSplitter, 0);
CComPtr<IPin> Pin2 = GetOutPin(m_AviSplitter, 1);
CComPtr<IPin> PinXV = GetInPin(m_xVid, 0);
if (Pin1 && Pin2 && PinXV)
{
hr = m_FilterGraph->ConnectDirect(Pin1, PinXV, NULL);
if (FAILED(hr))
{
hr = m_FilterGraph->ConnectDirect(Pin2, PinXV, NULL);
}
if (SUCCEEDED(hr))
{
CComPtr<IPin> PinOutXV = GetOutPin(m_xVid, 0);
CComPtr<IPin> PinInRenderer = GetInPin(m_VideoRenderer, 0);
if (PinOutXV && PinInRenderer)
{
CComPtr<IPin> PinConnected;
if (PinOutXV->ConnectedTo(&PinConnected) & VFW_E_NOT_CONNECTED)
{
//Disconnect renderer from any filters;
PinInRenderer->Disconnect();
hr = m_FilterGraph->ConnectDirect(PinOutXV, PinInRenderer, NULL);
}
if (SUCCEEDED(hr))
{
hr = RenderOutputPins(pGraphBuilder, m_AviSplitter);
if (FAILED(hr))
_DBGAlertM("FMediaMgr: **RenderOutputPins: %s\n", GetErrorDescription(hr));
m_GraphBuilt = TRUE;
}
else
_DBGAlertM("FMediaMgr: **Connect PinOutXV to PinInRenderer: %s\n", GetErrorDescription(hr));
}
else
_DBGAlertM("FMediaMgr: **PinOutXV or PinInRenderer is NULL\n");
}
else
_DBGAlertM("FMediaMgr: **Connect Splitter to xvid: %s\n", GetErrorDescription(hr));
}
else
_DBGAlertM("FMediaMgr: **Pin1 or Pin2 or PinXV is NULL.\n");
}
return hr;
}
HRESULT FMPlayerDShow::LoadMedia(const tchar* pFileName, IMediaOptions* pOptions)
{
USES_CONVERSION;
HRESULT hr = E_FAIL;
if (m_FourCC == "divx" && m_StreamFormat == "divx")
{
Init(m_hWndParent, m_pNotify);
}
if (m_FilterGraph == NULL)
return E_FAIL;
m_MediaControl->Stop();
if (m_FileSource)
{
m_FilterGraph->RemoveFilter(m_FileSource);
m_FileSource.Release();
}
else
{
/* CComQIPtr<IGraphBuilder> pGraphBuilder = m_FilterGraph;
if (SUCCEEDED(pGraphBuilder->RenderFile(T2OLE(pFileName), NULL)))
{
hr = Start();
return hr;
}
*/
if (SUCCEEDED(DetermineVideoType(pFileName)))
{
InitFilters(pFileName);
}
else
{
_DBGAlertM("FMPlayerDShow: PlayVideo: **Unable to determine file format.\n");
return E_FAIL;
}
}
_DBGAlertM("FMPlayerDShow: Starting playback: %s; offset = %I64d\n", pFileName, pOptions->rtOffset);
CComQIPtr<IGraphBuilder> pGraphBuilder = m_FilterGraph;
hr = pGraphBuilder->AddSourceFilter(T2OLE(pFileName), T2OLE(pFileName), &m_FileSource);
if (SUCCEEDED(hr))
{
CComPtr<IPin> PinSourceOut = GetOutPin(m_FileSource, 0);
CComPtr<IPin> PinSplitterIn = GetInPin(m_AviSplitter, 0);
if (PinSourceOut && PinSplitterIn)
{
PinSplitterIn->Disconnect();
hr = m_FilterGraph->ConnectDirect(PinSourceOut, PinSplitterIn, NULL);
if (FAILED(hr))
_DBGAlertM("FMediaMgr: **Connect SourceOut to SplitterIn: %s\n", GetErrorDescription(hr));
}
else
_DBGAlertM("FMediaMgr: **PinSourceOut or PinSourceIn is NULL\n");
hr = BuildTheGraph();
if (SUCCEEDED(hr))
{
m_FileName = pFileName;
m_Offset = pOptions->rtOffset;
hr = Start();
if (FAILED(hr))
_DBGAlertM("FMPlayerDShow: **Start() failed: %s\n", GetErrorDescription(hr));
else
{
SetVideoRect(m_VideoRect);
}
}
else
_DBGAlertM("FMPlayerDShow: **Cannot Start(): %s\n", GetErrorDescription(hr));
}
else
_DBGAlertM("FMPlayerDShow: **AddSourceFilter() failed: %s\n", GetErrorDescription(hr));
_DBGAlertM("FMPlayerDShow: StartPlayback() exiting: %s\n", GetErrorDescription(hr));
return hr;
}
bool VideoCapture::InitCamera(int iDevice, int iResolution)
{
if (cameraInitialized) return false;
HRESULT hr;
bool ans;
int iWidth = devices_resolutions[iDevice].x[iResolution];
int iHeight = devices_resolutions[iDevice].y[iResolution];
USES_CONVERSION;
CoCreateInstance(CLSID_SampleGrabber, NULL, CLSCTX_INPROC_SERVER,
IID_ISampleGrabber, (void**)&pGrabber);
if( !pGrabber ) return false;
hr = pNull.CoCreateInstance(CLSID_NullRenderer);
CComQIPtr< IBaseFilter, &IID_IBaseFilter > pGrabberBase( pGrabber );
ans = BindFilter(iDevice, &pSource);
if( !pSource ) return false;
hr = pGraph.CoCreateInstance( CLSID_FilterGraph );
if (hr!=S_OK) return false;
hr = pGraph->AddFilter( pSource, L"Source" );
if (hr!=S_OK) return false;
hr = pGraph->AddFilter( pGrabberBase, L"Grabber" );
if (hr!=S_OK) return false;
hr = pGraph->AddFilter( pNull, L"NullRenderer" );
if (hr!=S_OK) return false;
// Tell the grabber to grab 24-bit video. Must do this
// before connecting it
CMediaType GrabType;
GrabType.SetType( &MEDIATYPE_Video );
GrabType.SetSubtype( &MEDIASUBTYPE_RGB24 );
hr = pGrabber->SetMediaType( &GrabType );
if (hr!=S_OK) return false;
CComPtr< IPin > pGrabPinIn;
CComPtr< IPin > pGrabPinOut;
CComPtr< IPin > pNullPinIn;
pSourcePin = GetOutPin( pSource, 0 );
pGrabPinIn = GetInPin( pGrabberBase, 0 );
pGrabPinOut = GetOutPin( pGrabberBase, 0 );
pNullPinIn = GetInPin( pNull, 0 );
CComPtr <ICaptureGraphBuilder2> pCaptB;
pCaptB.CoCreateInstance(CLSID_CaptureGraphBuilder2);
pCaptB->SetFiltergraph(pGraph);
hr = pCaptB->FindInterface(&PIN_CATEGORY_CAPTURE,
&MEDIATYPE_Video,pSource,
IID_IAMStreamConfig, (void**)&pConfig);
if (hr!=S_OK) return false;
SetResolution(iDevice, iResolution);
// ... and connect them
//
hr = pGraph->Connect( pSourcePin, pGrabPinIn);
if (hr!=S_OK) return false;
hr = pGraph->Connect( pGrabPinOut, pNullPinIn );
if (hr!=S_OK) return false;
// Ask for the connection media type so we know its size
//
AM_MEDIA_TYPE mt;
hr = pGrabber->GetConnectedMediaType( &mt );
if (hr!=S_OK) return false;
VIDEOINFOHEADER * vih = (VIDEOINFOHEADER*) mt.pbFormat;
callback.im_width = iWidth;
callback.im_height = iHeight;
FreeMediaType( mt );
// Write the bitmap format
//
memset( &(callback.cbInfo.bih), 0, sizeof( callback.cbInfo.bih ) );
callback.cbInfo.bih.biSize = iWidth*iHeight*3;
callback.cbInfo.bih.biWidth = iWidth;
callback.cbInfo.bih.biHeight = iHeight;
callback.cbInfo.bih.biPlanes = 1;
callback.cbInfo.bih.biBitCount = 24;
callback.cbInfo.pBuffer = new byte[callback.cbInfo.bih.biSize];
hr = pGrabber->SetBufferSamples( FALSE );
hr = pGrabber->SetOneShot( FALSE );
hr = pGrabber->SetCallback( &callback, 1);
hr = pGraph->QueryInterface(IID_IMediaControl,(LPVOID *) &pControl);
hr = pControl->Run( );
cameraInitialized = true;
return true;
}
