private void ReloadLines()
{
MMErrors errorCode = 0;
_audioLines.Clear();
MIXERLINE mxl = new MIXERLINE();
uint dwDestination;
unchecked
{
dwDestination = (uint)-1;
}
mxl.cbStruct = (uint)Marshal.SizeOf(mxl);
mxl.dwComponentType = _componentType;
errorCode = (MMErrors)MixerNative.mixerGetLineInfo(_hMixer, ref mxl, MIXER_GETLINEINFOF.COMPONENTTYPE);
if (errorCode != MMErrors.MMSYSERR_NOERROR)
{
throw new MixerException(errorCode, WMME.Audio.GetErrorDescription(FuncName.fnMixerGetLineInfo, errorCode));
}
dwDestination = mxl.dwDestination;
var mixLine = new AudioLine(this, mxl);
if (mixLine.CControls != 0 && !(mixLine.CControls == 1 && mixLine.Controls[0].ControlType == MIXERCONTROL_CONTROLTYPE.MUX))
{
_audioLines.Add(mixLine);
}
int cConnections = (int)mxl.cConnections;
for (int i = 0; i < cConnections; i++)
{
mxl.cbStruct = (uint)Marshal.SizeOf(mxl);
mxl.dwDestination = dwDestination;
mxl.dwSource = (uint)i;
errorCode = (MMErrors)MixerNative.mixerGetLineInfo(Handle, ref mxl, MIXER_GETLINEINFOF.SOURCE);
if (errorCode != MMErrors.MMSYSERR_NOERROR)
{
throw new MixerException(errorCode, WMME.Audio.GetErrorDescription(FuncName.fnMixerGetLineInfo, errorCode));
}
var mixLineNew = new AudioLine(this, mxl);
if (mixLineNew.CControls != 0)
{
_audioLines.Add(mixLineNew);
}
}
}
private void ReloadAudioDevices()
{
if (_reloadDevicesInProgress)
{
return;
}
MMErrors errorCode = 0;
IntPtr hMixer = IntPtr.Zero;
try
{
_reloadDevicesInProgress = true;
var newAudioDevices = new List <AudioDeviceDescriptor>();
MIXERCAPS wic = new MIXERCAPS();
int iNumDevs = MixerNative.mixerGetNumDevs();
for (int i = 0; i < iNumDevs; i++)
{
// Get info about the next device
errorCode = (MMErrors)MixerNative.mixerGetDevCaps(i, ref wic, Marshal.SizeOf(wic));
if (errorCode != MMErrors.MMSYSERR_NOERROR)
{
throw new MixerException(errorCode, GetErrorDescription(FuncName.fnMixerGetDevCaps, errorCode));
}
errorCode = (MMErrors)MixerNative.mixerOpen(out hMixer, i, IntPtr.Zero, IntPtr.Zero, 0);
if (errorCode != MMErrors.MMSYSERR_NOERROR)
{
throw new MixerException(errorCode, GetErrorDescription(FuncName.fnMixerOpen, errorCode));
}
MIXERLINE mxl = new MIXERLINE();
mxl.cbStruct = (uint)Marshal.SizeOf(mxl);
var deviceDescriptor = new AudioDeviceDescriptor()
{
DeviceId = i,
Name = wic.szPname
};
foreach (var mixerlineComponenttype in AudioDevice.RecordingLineTypes)
{
mxl.dwComponentType = mixerlineComponenttype;
if (MixerNative.mixerGetLineInfo(hMixer, ref mxl, MIXER_GETLINEINFOF.COMPONENTTYPE) == 0)
{
deviceDescriptor.RecordingSupport = true;
deviceDescriptor.RecordingComponentType = mixerlineComponenttype;
break;
}
}
foreach (var mixerlineComponenttype in AudioDevice.PlaybackLineTypes)
{
mxl.dwComponentType = mixerlineComponenttype;
if (MixerNative.mixerGetLineInfo(hMixer, ref mxl, MIXER_GETLINEINFOF.COMPONENTTYPE) == 0)
{
deviceDescriptor.PlaybackSupport = true;
deviceDescriptor.PlaybackComponentType = mixerlineComponenttype;
break;
}
}
if (deviceDescriptor.PlaybackSupport || deviceDescriptor.RecordingSupport)
{
if (deviceDescriptor.PlaybackSupport && deviceDescriptor.RecordingSupport)
{
var playbackDeviceDescriptor = new AudioDeviceDescriptor()
{
DeviceId = deviceDescriptor.DeviceId,
Name = deviceDescriptor.Name,
PlaybackSupport = true,
RecordingSupport = false,
PlaybackComponentType = deviceDescriptor.PlaybackComponentType
};
var recordingDeviceDescriptor = new AudioDeviceDescriptor()
{
DeviceId = deviceDescriptor.DeviceId,
Name = deviceDescriptor.Name,
PlaybackSupport = false,
RecordingSupport = true,
RecordingComponentType = deviceDescriptor.RecordingComponentType
};
newAudioDevices.Add(playbackDeviceDescriptor);
newAudioDevices.Add(recordingDeviceDescriptor);
}
else
{
newAudioDevices.Add(deviceDescriptor);
}
}
}
if (newAudioDevices.Count > 0 || (_audioDevices.Count > 0 && iNumDevs == 0))
{
UpdateAudioDevicesLists(newAudioDevices);
}
}
finally
{
if (hMixer != IntPtr.Zero)
{
MixerNative.mixerClose(hMixer);
}
_reloadDevicesInProgress = false;
}
}