/////////////////////////////////////////////////////////////////////
// Name: SelectVideoStream
//
// Selects the first video stream for parsing with the ASF splitter.
//
// pContentInfo: Pointer to an initialized instance of the ASF
// content information object.
// pSplitter: Pointer to the ASF splitter.
// pbHasVideo: Receives TRUE if there is a video stream, or FALSE
// otherwise.
/////////////////////////////////////////////////////////////////////
void SelectVideoStream(
IMFASFContentInfo pContentInfo,
IMFASFSplitter pSplitter,
out bool pbHasVideo
)
{
int cStreams;
short wStreamID = 33;
short[] wStreamIDs = new short[1];
Guid streamType;
bool bFoundVideo = false;
HResult hr;
IMFASFProfile pProfile;
IMFASFStreamConfig pStream;
// Get the ASF profile from the content information object.
hr = pContentInfo.GetProfile(out pProfile);
MFError.ThrowExceptionForHR(hr);
try
{
// Loop through all of the streams in the profile.
hr = pProfile.GetStreamCount(out cStreams);
MFError.ThrowExceptionForHR(hr);
for (int i = 0; i < cStreams; i++)
{
// Get the stream type and stream identifier.
hr = pProfile.GetStream(i, out wStreamID, out pStream);
MFError.ThrowExceptionForHR(hr);
try
{
hr = pStream.GetStreamType(out streamType);
MFError.ThrowExceptionForHR(hr);
if (streamType == MFMediaType.Video)
{
bFoundVideo = true;
break;
}
}
finally
{
SafeRelease(pStream);
}
}
}
finally
{
SafeRelease(pProfile);
}
// Select the video stream, if found.
if (bFoundVideo)
{
// SelectStreams takes an array of stream identifiers.
wStreamIDs[0] = wStreamID;
hr = pSplitter.SelectStreams(wStreamIDs, 1);
MFError.ThrowExceptionForHR(hr);
}
pbHasVideo = bFoundVideo;
}
/////////////////////////////////////////////////////////////////////
// Name: SelectVideoStream
//
// Selects the first video stream for parsing with the ASF splitter.
//
// pContentInfo: Pointer to an initialized instance of the ASF
// content information object.
// pSplitter: Pointer to the ASF splitter.
// pbHasVideo: Receives TRUE if there is a video stream, or FALSE
// otherwise.
/////////////////////////////////////////////////////////////////////
void SelectVideoStream(
IMFASFContentInfo pContentInfo,
IMFASFSplitter pSplitter,
out bool pbHasVideo
)
{
int cStreams;
short wStreamID = 33;
short[] wStreamIDs = new short[1];
Guid streamType;
bool bFoundVideo = false;
IMFASFProfile pProfile;
IMFASFStreamConfig pStream;
// Get the ASF profile from the content information object.
int hr = pContentInfo.GetProfile(out pProfile);
MFError.ThrowExceptionForHR(hr);
try
{
// Loop through all of the streams in the profile.
hr = pProfile.GetStreamCount(out cStreams);
MFError.ThrowExceptionForHR(hr);
for (int i = 0; i < cStreams; i++)
{
// Get the stream type and stream identifier.
hr = pProfile.GetStream(i, out wStreamID, out pStream);
MFError.ThrowExceptionForHR(hr);
try
{
hr = pStream.GetStreamType(out streamType);
MFError.ThrowExceptionForHR(hr);
if (streamType == MFMediaType.Video)
{
bFoundVideo = true;
break;
}
}
finally
{
SafeRelease(pStream);
}
}
}
finally
{
SafeRelease(pProfile);
}
// Select the video stream, if found.
if (bFoundVideo)
{
// SelectStreams takes an array of stream identifiers.
wStreamIDs[0] = wStreamID;
hr = pSplitter.SelectStreams(wStreamIDs, 1);
MFError.ThrowExceptionForHR(hr);
}
pbHasVideo = bFoundVideo;
}
