public int StartCapture(string pwszFileName, Guid subType)
{
var hr = 0;
lock (LockSync)
{
if (PReader == null)
{
return(hr);
}
// Create the sink writer
if (Succeeded(hr))
{
hr = MFExtern.MFCreateSinkWriterFromURL(pwszFileName, null, null, out PWriter);
}
// Set up the encoding parameters.
if (Succeeded(hr))
{
var param = new EncodingParameters {
Subtype = subType
};
hr = ConfigureCapture(param);
}
if (Succeeded(hr))
{
BFirstSample = true;
LlBaseTime = 0;
}
}
return(hr);
}
private static int ConfigureEncoder(EncodingParameters eparams, IMFMediaType pType, IMFSinkWriter pWriter,
out int pdwStreamIndex)
{
IMFMediaType pType2;
var hr = MFExtern.MFCreateMediaType(out pType2);
if (Succeeded(hr))
{
hr = pType2.SetGUID(MFAttributesClsid.MF_MT_MAJOR_TYPE, MFMediaType.Video);
}
if (Succeeded(hr))
{
hr = pType2.SetGUID(MFAttributesClsid.MF_MT_SUBTYPE, eparams.Subtype);
}
if (Succeeded(hr))
{
hr = pType2.SetUINT32(MFAttributesClsid.MF_MT_AVG_BITRATE, eparams.Bitrate);
}
if (Succeeded(hr))
{
hr = CopyAttribute(pType, pType2, MFAttributesClsid.MF_MT_FRAME_SIZE);
}
if (Succeeded(hr))
{
hr = CopyAttribute(pType, pType2, MFAttributesClsid.MF_MT_FRAME_RATE);
}
if (Succeeded(hr))
{
hr = CopyAttribute(pType, pType2, MFAttributesClsid.MF_MT_PIXEL_ASPECT_RATIO);
}
if (Succeeded(hr))
{
hr = CopyAttribute(pType, pType2, MFAttributesClsid.MF_MT_INTERLACE_MODE);
}
pdwStreamIndex = 0;
if (Succeeded(hr))
{
hr = pWriter.AddStream(pType2, out pdwStreamIndex);
}
SafeRelease(pType2);
return(hr);
}
private int ConfigureCapture(EncodingParameters eparam)
{
IMFMediaType pType = null;
//var hr = ConfigureSourceReader(PReader);
var hr = PReader.GetCurrentMediaType((int)MF_SOURCE_READER.FirstVideoStream, out pType);
int w, h;
MfGetAttributeSize(pType, out w, out h);
eparam.Bitrate = w * h * 20;
var sinkStream = 0;
if (Succeeded(hr))
{
hr = ConfigureEncoder(eparam, pType, PWriter, out sinkStream);
}
if (Succeeded(hr))
{
// Register the color converter DSP for this process, in the video
// processor category. This will enable the sink writer to enumerate
// the color converter when the sink writer attempts to match the
// media types.
hr = MFExtern.MFTRegisterLocalByCLSID(
typeof(CColorConvertDMO).GUID,
MFTransformCategory.MFT_CATEGORY_VIDEO_PROCESSOR,
"",
MFT_EnumFlag.SyncMFT,
0,
null,
0,
null
);
}
if (Succeeded(hr))
{
hr = PWriter.SetInputMediaType(sinkStream, pType, null);
}
if (Succeeded(hr))
{
hr = PWriter.BeginWriting();
}
SafeRelease(pType);
return(hr);
}
