DirectShowと戦うスレ Part 4

DirectShowと戦うスレ Part 4 at TECH

189:デフォルトの名無しさん
09/01/07 10:50:36
>>188
あ、エスパー的な質問でしたか。
とりあえずファイルをオープンするところをうｐります

bool Open( const char *chrFileName )
{
　if( FAILED(CoCreateInstance( CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER, IID_IGraphBuilder, (void **)&GraphBuilder )) ) return false;
　if( FAILED(GraphBuilder->QueryInterface( IID_IMediaControl, (void **)&MediaControl )) ) return false;
　if( FAILED(GraphBuilder->QueryInterface( IID_IMediaEventEx, (void **)&MediaEventEx )) ) return false;
　if( FAILED(GraphBuilder->QueryInterface( IID_IMediaSeeking, (void **)&MediaSeeking )) ) return false;
　if( FAILED(GraphBuilder->QueryInterface( IID_IVideoWindow, (void **)&VideoWindow )) ) return false;
　if( FAILED(GraphBuilder->QueryInterface( IID_IBasicAudio, (void **)&BasicAudio )) ) return false;
　if( FAILED(CoCreateInstance( CLSID_SampleGrabber, NULL, CLSCTX_INPROC_SERVER, IID_IBaseFilter, (void **)&BaseFilter )) ) return false;
　if( FAILED(BaseFilter->QueryInterface( IID_ISampleGrabber, (void **)&SampleGrabber )) ) return false;
　GraphBuilder->AddFilter( BaseFilter, L"Grabber" );
　AM_MEDIA_TYPE mt;
　ZeroMemory( &mt, sizeof( AM_MEDIA_TYPE ) );
　mt.majortype = MEDIATYPE_Video;
　mt.subtype = MEDIASUBTYPE_RGB24;
　mt.formattype = FORMAT_VideoInfo;
　if( SampleGrabber->SetMediaType( &mt ) != S_OK ) return false;
　WCHAR buff[512];
　::ZeroMemory( buff, sizeof( buff ) );
　::MultiByteToWideChar( CP_ACP, 0, chrFileName, strlen(chrFileName), buff, sizeof(buff) );
　if( FAILED(GraphBuilder->RenderFile( buff, NULL )) ) return false;
　if( PlayWnd != NULL ){
　　VideoWindow->put_Owner( (OAHWND)PlayWnd );
　　VideoWindow->put_WindowStyle( WS_CHILD|WS_CLIPSIBLINGS );
　　if( FormWnd && MediaEventEx->SetNotifyWindow( (OAHWND)FormWnd, WM_GRAPHNOTIFY, 0 ) != S_OK ) return false;
　}

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