C++ IVideoWindow::put_MessageDrain方法代码示例

/*
 * Class:     sage_DShowMediaPlayer
 * Method:    setVideoHWND0
 * Signature: (JJ)V
 */
JNIEXPORT void JNICALL Java_sage_DShowMediaPlayer_setVideoHWND0
  (JNIEnv *env, jobject jo, jlong dataPtr, jlong vhwnd)
{
	CPlayerData* playData = (CPlayerData*) dataPtr;
	IGraphBuilder* pGraph = playData->GetGraph();
	IVideoWindow* pVW = NULL;
	HRESULT hr = pGraph->QueryInterface(IID_IVideoWindow, (void**)&pVW);
	if (SUCCEEDED(hr))
	{
		slog((env, "DShowPlayer setVideoHWND(%d)\r\n", (int) vhwnd));
		pVW->put_AutoShow(OAFALSE);
		pVW->put_Owner((OAHWND)vhwnd);
		pVW->put_MessageDrain((OAHWND)vhwnd);
		pVW->put_WindowStyle(WS_CHILD | WS_CLIPSIBLINGS | WS_CLIPCHILDREN);
		pVW->put_Visible(OATRUE);

		// We do all of our own aspect ratio control, so don't let DShow do any for us
		// by setting the aspect ratio mode on the video rendering filter's pin
		IEnumFilters *pEnum = NULL;
		hr = pGraph->EnumFilters(&pEnum);
		if (SUCCEEDED(hr))
		{
			IBaseFilter *currFilt = NULL;
			while (pEnum->Next(1, &currFilt, NULL) == S_OK)
			{
				IPin *overlayPin = NULL;
				hr = currFilt->FindPin(L"Input0", &overlayPin);
				if (SUCCEEDED(hr))
				{
					// Right pin name, let's see if it's overlay
					IMixerPinConfig *pOverlayMix = NULL;
					hr = overlayPin->QueryInterface(IID_IMixerPinConfig, (void**)&pOverlayMix);
					if (SUCCEEDED(hr))
					{
						pOverlayMix->SetAspectRatioMode(AM_ARMODE_STRETCHED);
						SAFE_RELEASE(pOverlayMix);
					}
					SAFE_RELEASE(overlayPin);
				}
				SAFE_RELEASE(currFilt);
			}
			SAFE_RELEASE(pEnum);
			hr = S_OK;
		}
		SAFE_RELEASE(pVW);
	}
	HTESTPRINT(hr);
}

void Video::play( char *fileName, DWORD )
{
	WCHAR wPath[100];
	HRESULT hr;
	IMediaControl *pMC;

	if(!init_success)
		return;

	MultiByteToWideChar( CP_ACP, 0, fileName, -1, wPath, 100 );

	if( (hr = pGraph->RenderFile(wPath, NULL)) == 0)
	{

		// use full screen video interface
		// try to change display mode
		IVideoWindow *iVideoWindow = NULL;
		if( (hr = pGraph->QueryInterface(IID_IVideoWindow, (void **) &iVideoWindow)) == 0)
		{
#ifdef CREATE_DUMMY_WINDOW
			if(hwnd)
			{
				HRESULT hr2 = iVideoWindow->put_MessageDrain((OAHWND) hwnd);
				hr2 = 0;
			}
#endif

#ifdef FULL_SCREEN_VIDEO
			IFilter *iFilter;
			if( pGraph->FindFilterByName(L"Video Renderer", &iFilter) == 0)
			{
				IBasicVideo *iBasicVideo;
				if( iFilter->QueryInterface(IID_IBasicVideo, (void **)&iBasicVideo) == 0)
				{
					IFullScreenVideo *iFullScreenVideo;
					IDirectDrawVideo *iDirectDrawVideo;
					if( iFilter->QueryInterface(IID_IFullScreenVideo, (void **)&iFullScreenVideo) == 0)
					{
						iFullScreenVideo->Release();
					}
					else if( iFilter->QueryInterface(IID_IDirectDrawVideo, (void **)&iDirectDrawVideo) == 0)
					{
						HRESULT hr2;
						hr2 = iDirectDrawVideo->UseWhenFullScreen(OATRUE);
						iDirectDrawVideo->Release();
					}

					iBasicVideo->Release();
				}
				iFilter->Release();
			}
			hr=iVideoWindow->put_FullScreenMode(OATRUE);
#endif

			/* // code to find all filter in the filter graph
			{
				IEnumFilters *iEnumFilters;
				pGraph->EnumFilters(&iEnumFilters);

				ULONG filterCount = 16;
				IFilter *iFilters[16];
				iEnumFilters->Next(filterCount, iFilters, &filterCount);

				for( ULONG j = 0; j < filterCount; ++j )
				{
					FILTER_INFO filterInfo;
					iFilters[j]->QueryFilterInfo(&filterInfo);
					filterInfo.pGraph->Release();
					iFilters[j]->Release();
				}

				iEnumFilters->Release();
			}*/

			iVideoWindow->HideCursor(OATRUE);
			iVideoWindow->put_Visible( OAFALSE );
			iVideoWindow->put_AutoShow( OAFALSE );
			LONG windowStyle;
			iVideoWindow->get_WindowStyle( &windowStyle);
			windowStyle &= ~WS_BORDER & ~WS_CAPTION & ~WS_SIZEBOX & ~WS_THICKFRAME &
				~WS_HSCROLL & ~WS_VSCROLL & ~WS_VISIBLE;
			iVideoWindow->put_WindowStyle( windowStyle);
		}
		else
			iVideoWindow = NULL;
		
		if( (hr = pGraph->QueryInterface(IID_IMediaControl, (void **) &pMC)) == 0)
		{
			pMC->Run();					// sometimes it returns 1, but still ok
			state = PLAYING;
			pMC->Release();
		}

		if( iVideoWindow )
		{
			iVideoWindow->put_Visible( OAFALSE );
			LONG windowStyle;
			iVideoWindow->get_WindowStyle( &windowStyle);
			windowStyle &= ~WS_BORDER & ~WS_CAPTION & ~WS_SIZEBOX & ~WS_THICKFRAME &
				~WS_HSCROLL & ~WS_VSCROLL & ~WS_VISIBLE;
//.........这里部分代码省略.........