public static LibMWCapture.MWCAP_VIDEO_SIGNAL_STATUS?GetSignalStatus(int channelIndex, out LibMWCapture.MWCAP_AUDIO_VOLUME? audioStatus)
{
audioStatus = null;
ushort[] wpath = new ushort[512];
IntPtr pwpath = GCHandle.Alloc(wpath, GCHandleType.Pinned).AddrOfPinnedObject();
LibMWCapture.MWGetDevicePath(channelIndex, pwpath);
var videoChannel = LibMWCapture.MWOpenChannelByPath(pwpath);
if (videoChannel == IntPtr.Zero)
{
return(null);
}
try
{
audioStatus = PInvokeTools.ReadStruct <LibMWCapture.MWCAP_AUDIO_VOLUME>(ptr =>
LibMWCapture.MWGetAudioVolume(videoChannel, LibMWCapture.MWCAP_AUDIO_NODE.MWCAP_AUDIO_EMBEDDED_CAPTURE, ptr));
return(PInvokeTools.ReadStruct <LibMWCapture.MWCAP_VIDEO_SIGNAL_STATUS>(
ptr =>
LibMWCapture.MWGetVideoSignalStatus(videoChannel, ptr)));
}
finally
{
LibMWCapture.MWCloseChannel(videoChannel);
}
}
public LibMWCapture.MWCAP_AUDIO_VOLUME GetMWAudioVolume()
{
return(PInvokeTools.ReadStruct <LibMWCapture.MWCAP_AUDIO_VOLUME>(ptr =>
LibMWCapture.MWGetAudioVolume(VideoChannel, LibMWCapture.MWCAP_AUDIO_NODE.MWCAP_AUDIO_EMBEDDED_CAPTURE, ptr)));
}