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 static void SetMute(this LibMWCapture.MWCAP_AUDIO_VOLUME audioStatus, IntPtr videoChannel, bool mute)
{
for (int i = 0; i < audioStatus.abMute.Length; i++)
{
audioStatus.abMute[i] = mute;
}
PInvokeTools.WriteStruct(audioStatus, ptr =>
LibMWCapture.MWSetAudioVolume(videoChannel, LibMWCapture.MWCAP_AUDIO_NODE.MWCAP_AUDIO_EMBEDDED_CAPTURE, ptr));
}
public static void SetAudioVolume(this LibMWCapture.MWCAP_AUDIO_VOLUME audioStatus, IntPtr videoChannel, int percent)
{
var volumeIndex = (int)(AudioVolumes.Length / 100.0 * percent);
volumeIndex = Math.Min(Math.Max(volumeIndex, 0), AudioVolumes.Length - 1);
var volume = AudioVolumes[volumeIndex];
for (int i = 0; i < audioStatus.asVolume.Length; i++)
{
audioStatus.asVolume[i] = volume;
}
PInvokeTools.WriteStruct(audioStatus, ptr =>
LibMWCapture.MWSetAudioVolume(videoChannel, LibMWCapture.MWCAP_AUDIO_NODE.MWCAP_AUDIO_EMBEDDED_CAPTURE, ptr));
}
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)));
}
public LibMWCapture.MWCAP_VIDEO_SIGNAL_STATUS GetVideoSignalStatus()
{
return(PInvokeTools.ReadStruct <LibMWCapture.MWCAP_VIDEO_SIGNAL_STATUS>(ptr =>
LibMWCapture.MWGetVideoSignalStatus(VideoChannel, ptr)));
}
public static void GetChannelInfobyIndex(int nChannelIndex, ref LibMWCapture.MWCAP_CHANNEL_INFO channelInfo)
{
channelInfo = PInvokeTools.ReadStruct <LibMWCapture.MWCAP_CHANNEL_INFO>(ptr =>
LibMWCapture.MWGetChannelInfoByIndex(nChannelIndex, ptr));
}
