internal AudioDevice(IMFActivate dev)
{
Device = dev;
int cItems;
HResult hr = dev.GetCount(out cItems);
NativeHelpers.CheckHr(hr, "IMFActivate.GetCount");
for (int j = 0; j < cItems; j++)
{
Guid key;
using (PropVariant value = new PropVariant())
{
hr = dev.GetItemByIndex(j, out key, value);
Debug.WriteLine("{0}={1}", key.ToString(), value.ToString());
if (key == MFAttributesClsid.MF_DEVSOURCE_ATTRIBUTE_FRIENDLY_NAME)
{
Name = value.ToString();
}
else if (key == MFAttributesClsid.MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_AUDCAP_SYMBOLIC_LINK)
{
SymbolicLink = value.ToString();
}
else if (key == MFAttributesClsid.MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_AUDCAP_ENDPOINT_ID)
{
EndPointId = value.ToString();
}
}
}
}
public AudioRecording StartRecording(string wavFileName, EventHandler <AudioSample> pcmHandler)
{
if (this.recording == null)
{
Guid iid = typeof(IMFMediaSource).GUID;
object ppv;
HResult hr = this.Device.ActivateObject(iid, out ppv);
NativeHelpers.CheckHr(hr, "Activating audio device");
this.source = (IMFMediaSource)ppv;
this.recording = new AudioRecording(this.source);
}
this.recording.Start(wavFileName, pcmHandler);
return(this.recording);
}
