本文整理汇总了C++中IAMStreamConfig::QueryInterface方法的典型用法代码示例。如果您正苦于以下问题：C++ IAMStreamConfig::QueryInterface方法的具体用法？C++ IAMStreamConfig::QueryInterface怎么用？C++ IAMStreamConfig::QueryInterface使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类IAMStreamConfig的用法示例。
在下文中一共展示了IAMStreamConfig::QueryInterface方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
int main(int argc, char* argv[])
{
ICaptureGraphBuilder2 *pCaptureGraphBuilder = NULL;
IGraphBuilder *pGraphBuilder = NULL;
IBaseFilter *pSource = NULL;
IBaseFilter *pMux = NULL;
IBaseFilter *pVideoCompressor = NULL;
IBaseFilter *pAudioCompressor = NULL;
IAMStreamConfig *pAMStreamConfig = NULL;
IAMVideoCompression *pAMVideoCompression = NULL;
IMediaControl *pControl = NULL;
IMediaSeeking *pSeek = NULL;
IMediaEvent *pEvent = NULL;
HRESULT hr;
DWORD pdwRegister=0;
CoInitialize(NULL);
// Create the capture graph builder.
CoCreateInstance(CLSID_CaptureGraphBuilder2, NULL, CLSCTX_INPROC,
IID_ICaptureGraphBuilder2, (void **)&pCaptureGraphBuilder);
// Make the rendering section of the graph.
pCaptureGraphBuilder->SetOutputFileName(
&MEDIASUBTYPE_Avi, // File type.
L"C:\\STDIUE1.avi", // File name.
&pMux, // pointer to the multiplexer.
NULL); // pointer to the file writer.
// Load the source file.
pCaptureGraphBuilder->GetFiltergraph(&pGraphBuilder);
pGraphBuilder->AddSourceFilter(L"C:\\Program Files\\Microsoft Money\\Media\\STDIUE1.avi", L"Source Filter", &pSource);
// Add the compressor filter.
CoCreateInstance(CLSID_AVICo, NULL, CLSCTX_INPROC,
IID_IBaseFilter, (void **)&pVideoCompressor);
pGraphBuilder->AddFilter(pVideoCompressor, L"Video Compressor");
// Render the video stream, through the compressor.
pCaptureGraphBuilder->RenderStream(
NULL, // Output pin category
NULL, // Media type
pSource, // Source filter
pVideoCompressor, // Compressor filter
pMux); // Sink filter (the AVI Mux)
/* CoCreateInstance(CLSID_GSM, NULL, CLSCTX_INPROC,
IID_IBaseFilter, (void **)&pAudioCompressor);
pGraphBuilder->AddFilter(pAudioCompressor, L"Audio Compressor");*/
// Render the audio stream.
pCaptureGraphBuilder->RenderStream(
NULL,
NULL,
pSource,
pAudioCompressor,
pMux);
// Compress at 100k/second data rate.
AM_MEDIA_TYPE *pmt;
pCaptureGraphBuilder->FindInterface(NULL, NULL, pVideoCompressor, IID_IAMStreamConfig, (void **)&pAMStreamConfig);
pAMStreamConfig->GetFormat(&pmt);
if (pmt->formattype == FORMAT_VideoInfo)
{
((VIDEOINFOHEADER *)(pmt->pbFormat))->dwBitRate = 100000;
pAMStreamConfig->SetFormat(pmt);
}
// Request key frames every four frames.
pAMStreamConfig->QueryInterface(IID_IAMVideoCompression, (void **)&pAMVideoCompression);
pAMVideoCompression->put_KeyFrameRate(4);
pAMVideoCompression->Release();
pAMStreamConfig->Release();
// Run the graph.
pGraphBuilder->QueryInterface(IID_IMediaControl, (void **)&pControl);
pGraphBuilder->QueryInterface(IID_IMediaEvent, (void **)&pEvent);
hr = pMux->QueryInterface(IID_IMediaSeeking, (void**)&pSeek);
pControl->Run();
printf("Recompressing... \n");
long evCode;
if (SUCCEEDED(hr))
{
REFERENCE_TIME rtTotal, rtNow = 0;
pSeek->GetDuration(&rtTotal);
while ((pEvent->WaitForCompletion(1000, &evCode)) == E_ABORT)
{
//.........这里部分代码省略.........