directshow 之 视频文件AVI格式摄制.doc

directshow 之 视频文件AVI格式摄制 HRESULT CVideoSource:RecoderAVIFrames(char* szFile) HRESULT hr = NULL;OFSTRUCT os;/IBaseFilter *pMux;IFileSinkFilter *pSink;IConfigAviMux * pConfigAviMux;if(OpenFile(szFile, &os, OF_EXIST) = HFILE_ERROR)/ bring up dialog, and set new file size/*CFile f;bool bFile = f.Open(szFile,CFile:modeCreate|CFile:modeWrite);if (!bFile)MessageBox(AfxGetMainWnd()-m_hWnd, TEXT(很抱歉，不能创建文件，请检查该文件夹是否有权限的严格控制),TEXT(Error),MB_OK | MB_ICONEXCLAMATION);*/hr = m_pBuilder-AllocCapFile(LPCOLESTR(szFile),(DWORDLONG)100* 1024 * 1024);if (hr != NOERROR)MessageBox(AfxGetMainWnd()-m_hWnd, TEXT(很抱歉，磁盘空间不够，请调整磁盘空间),TEXT(Error),MB_OK | MB_ICONEXCLAMATION);return FALSE;/hr = m_pBuilder-SetOutputFileName(&MEDIASUBTYPE_Avi,(LPCOLESTR)szFile, &m_pMux, NULL);/hr = m_pBuilder-SetOutputFileName(&MEDIASUBTYPE_Avi,(LPCOLESTR)szFile, &m_pMux, &pSink);hr = m_pBuilder-SetOutputFileName(&MEDIASUBTYPE_Avi,(LPCOLESTR)szFile, &m_pVideoRender, &pSink);if(hr != NOERROR)ErrMsg(TEXT(Cannot set output file);/ Now tell the AVIMUX to write out AVI files that old apps can read properly./ If we dont, most apps wont be able to tell where the keyframes are,/ slowing down editing considerably/ Doing this will cause one seek (over the area the index will go) when/ you capture past 1 Gig, but thats no big deal./ NOTE: This is on by default, so its not necessary to turn it on/ Also, set the proper MASTER STREAMhr = m_pVideoRender-QueryInterface(IID_IConfigAviMux, (void *)&pConfigAviMux);if (hr = NOERROR & pConfigAviMux)hr = pConfigAviMux-SetOutputCompatibilityIndex(TRUE);/ Render the video capture and preview pins - even if the capture filter only/ has a capture pin (and no preview pin) this should work. because the/ capture graph builder will use a smart tee filter to provide both capture/ and preview. We dont have to worry. It will just work./ NOTE that we try to render the interleaved pin before the video pin, because/ if BOTH exist, its a DV filter and the only way to get the audio is to use/ the interleaved pin. Using the Video pin on a DV filter is only useful if/ you dont want the audio./m_pBuilder-GetFiltergraph(&m_pGrapher);/有声音录制，需设置/*if(gcap.fCapAudio)hr = gcap.pConfigAviMux-SetMasterStream(gcap.iMasterStream);if(hr != NOERROR)ErrMsg(TEXT(SetMasterStream failed!);*/hr = m_pBuilder-RenderStream(&PIN_CATEGORY_CAPTURE,&MEDIATYPE_Interleaved,m_pVideoCap, NULL, m_pVideoRender);/hr = m_pBuilder-RenderStream(&PIN_CATEGORY_CAPTURE,&MEDIATYPE_Interleaved,m_pVideoCap, NULL, m_pMux);if(hr != NOERROR)hr = m_pBuilder-RenderStream(&PIN_CATEGORY_CAPTURE, &MEDIATYPE_Video, m_pVideoCap, NULL, m_pVideoRender);/hr = m_pBuilder-RenderStream(&PIN_CATEGORY_CAPTURE, &MEDIATYPE_Video, m_pVideoCap, NULL, m_pMux);if(hr != NOERROR)ErrMsg(TEXT(Cannot render video c