change avi source files in real-time
- From: john <john@xxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 6 Feb 2007 21:05:01 -0800
this is just texture3d9 sample.
this sample loads "wFileName" and play it.
I guess
" hr = g_pGB->AddSourceFilter (wFileName, L"SOURCE", &pFSrc); "
this is loading part.
I have a question now.
I want to stop current AVI and want to load new AVI file.
and play it.
where should I modifty in this source code ?
and another question is
if I want to play 7 avi files sequently ,
if I make 7 g_pGB instances and play it, it have problem ?
HRESULT InitDShowTextureRenderer()
{
HRESULT hr = S_OK;
CComPtr<IBaseFilter> pFSrc; // Source Filter
CComPtr<IPin> pFSrcPinOut; // Source Filter Output Pin
CTextureRenderer *pCTR=0; // DirectShow Texture renderer
// Create the filter graph
if (FAILED(g_pGB.CoCreateInstance(CLSID_FilterGraph, NULL,
CLSCTX_INPROC)))
return E_FAIL;
#ifdef REGISTER_FILTERGRAPH
// Register the graph in the Running Object Table (for debug purposes)
AddToROT(g_pGB);
#endif
// Create the Texture Renderer object
pCTR = new CTextureRenderer(NULL, &hr);
if (FAILED(hr) || !pCTR)
{
Msg(TEXT("Could not create texture renderer object! hr=0x%x"), hr);
return E_FAIL;
}
// Get a pointer to the IBaseFilter on the TextureRenderer, add it to
graph
g_pRenderer = pCTR;
if (FAILED(hr = g_pGB->AddFilter(g_pRenderer, L"TEXTURERENDERER")))
{
Msg(TEXT("Could not add renderer filter to graph! hr=0x%x"), hr);
return hr;
}
// Determine the file to load based on DirectX Media path (from SDK)
// Use a helper function included in DXUtils.cpp
TCHAR strFileName[MAX_PATH] = {NULL,};
WCHAR wFileName[MAX_PATH] = {NULL,};
//lstrcpyn( strFileName, DXUtil_GetDXSDKMediaPath(), MAX_PATH-1 );
//lstrcat( strFileName, SOURCE_FILE );
lstrcpy( strFileName, SOURCE_FILE );
strFileName[MAX_PATH-1] = 0; // NULL-terminate
wFileName[MAX_PATH-1] = 0; // NULL-terminate
USES_CONVERSION;
wcsncpy(wFileName, T2W(strFileName), NUMELMS(wFileName));
// Add the source filter to the graph.
hr = g_pGB->AddSourceFilter (wFileName, L"SOURCE", &pFSrc);
// If the media file was not found, inform the user.
if (hr == VFW_E_NOT_FOUND)
{
Msg(TEXT("Could not add source filter to graph!
(hr==VFW_E_NOT_FOUND)\r\n\r\n")
TEXT("This sample reads a media file from the DirectX SDK's
media path.\r\n")
TEXT("Please install the DirectX 9 SDK on this machine."));
return hr;
}
else if(FAILED(hr))
{
Msg(TEXT("Could not add source filter to graph! hr=0x%x"), hr);
return hr;
}
if (FAILED(hr = pFSrc->FindPin(L"Output", &pFSrcPinOut)))
{
Msg(TEXT("Could not find output pin! hr=0x%x"), hr);
return hr;
}
#ifdef NO_AUDIO_RENDERER
// If no audio component is desired, directly connect the two video pins
// instead of allowing the Filter Graph Manager to render all pins.
CComPtr<IPin> pFTRPinIn; // Texture Renderer Input Pin
// Find the source's output pin and the renderer's input pin
if (FAILED(hr = pFTR->FindPin(L"In", &pFTRPinIn)))
{
Msg(TEXT("Could not find input pin! hr=0x%x"), hr);
return hr;
}
// Connect these two filters
if (FAILED(hr = g_pGB->Connect(pFSrcPinOut, pFTRPinIn)))
{
Msg(TEXT("Could not connect pins! hr=0x%x"), hr);
return hr;
}
#else
// Render the source filter's output pin. The Filter Graph Manager
// will connect the video stream to the loaded CTextureRenderer
// and will load and connect an audio renderer (if needed).
if (FAILED(hr = g_pGB->Render(pFSrcPinOut)))
{
Msg(TEXT("Could not render source output pin! hr=0x%x"), hr);
return hr;
}
#endif
// Get the graph's media control, event & position interfaces
g_pGB.QueryInterface(&g_pMC);
g_pGB.QueryInterface(&g_pMP);
g_pGB.QueryInterface(&g_pME);
// Start the graph running;
if (FAILED(hr = g_pMC->Run()))
{
Msg(TEXT("Could not run the DirectShow graph! hr=0x%x"), hr);
return hr;
}
return S_OK;
}
.
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