public static unsafe String[] SearchDevices()
{
List <String> devices = new List <string>();
IntPtr mHMixer = IntPtr.Zero;
try
{
uint dwDestination;
unchecked
{
dwDestination = (uint)-1;
}
int iNumDevs = MixerNative.mixerGetNumDevs();
for (int i = 0; i < iNumDevs; i++)
{
MixerNative.mixerOpen(out mHMixer, i, IntPtr.Zero /*mCallbackWindow.Handle*/, IntPtr.Zero, MixerNative.CALLBACK_WINDOW);
// Get the line info for the wave in destination line
MIXERLINE mxl = new MIXERLINE();
// find the microphone source line connected to this wave in destination
IntPtr pmc = IntPtr.Zero;
mxl.cbStruct = (uint)Marshal.SizeOf(mxl);
mxl.dwComponentType = MIXERLINE_COMPONENTTYPE.DST_SPEAKERS;
if (MixerNative.mixerGetLineInfo(mHMixer, ref mxl, MIXER_GETLINEINFOF.COMPONENTTYPE) == 0)
{
dwDestination = mxl.dwDestination;
int cConnections = (int)mxl.cConnections;
for (uint j = 0; j < cConnections; j++)
{
mxl.cbStruct = (uint)Marshal.SizeOf(mxl);
mxl.dwDestination = dwDestination;
mxl.dwSource = (uint)j;
mxl.dwComponentType = MIXERLINE_COMPONENTTYPE.SRC_MICROPHONE;
if (MixerNative.mixerGetLineInfo(mHMixer, ref mxl, MIXER_GETLINEINFOF.SOURCE) == 0)
{
if (mxl.dwComponentType == MIXERLINE_COMPONENTTYPE.SRC_MICROPHONE)
{
//it is a microphone
devices.Add(mxl.dwLineID.ToString());
}
}
}
}
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
finally
{
if (mHMixer != IntPtr.Zero)
{
MixerNative.mixerClose(mHMixer);
}
}
return(devices.ToArray());
}
public static unsafe void MuteOrUnMuteAllMics(bool mute)
{
IntPtr mHMixer = IntPtr.Zero;
try
{
uint dwDestination;
unchecked
{
dwDestination = (uint)-1;
}
int iNumDevs = MixerNative.mixerGetNumDevs();
for (int i = 0; i < iNumDevs; i++)
{
MixerNative.mixerOpen(out mHMixer, i, IntPtr.Zero /*mCallbackWindow.Handle*/, IntPtr.Zero, MixerNative.CALLBACK_WINDOW);
// Get the line info for the wave in destination line
MIXERLINE mxl = new MIXERLINE();
// find the microphone source line connected to this wave in destination
IntPtr pmc = IntPtr.Zero;
MMErrors errorCode = 0;
mxl.cbStruct = (uint)Marshal.SizeOf(mxl);
mxl.dwComponentType = MIXERLINE_COMPONENTTYPE.DST_SPEAKERS;
if (MixerNative.mixerGetLineInfo(mHMixer, ref mxl, MIXER_GETLINEINFOF.COMPONENTTYPE) == 0)
{
dwDestination = mxl.dwDestination;
int cConnections = (int)mxl.cConnections;
for (uint j = 0; j < cConnections; j++)
{
mxl.cbStruct = (uint)Marshal.SizeOf(mxl);
mxl.dwDestination = dwDestination;
mxl.dwSource = (uint)j;
mxl.dwComponentType = MIXERLINE_COMPONENTTYPE.SRC_MICROPHONE;
if (MixerNative.mixerGetLineInfo(mHMixer, ref mxl, MIXER_GETLINEINFOF.SOURCE) == 0)
{
if (mxl.dwComponentType == MIXERLINE_COMPONENTTYPE.SRC_MICROPHONE)
{
//it is a microphone
pmc = Marshal.AllocHGlobal((int)(Marshal.SizeOf(typeof(MIXERCONTROL)) * mxl.cControls));
MIXERLINECONTROLS mlc = new MIXERLINECONTROLS();
mlc.cbStruct = (uint)sizeof(MIXERLINECONTROLS);
mlc.dwLineID = mxl.dwLineID;
mlc.cControls = mxl.cControls;
mlc.pamxctrl = pmc;
mlc.cbmxctrl = (uint)(Marshal.SizeOf(typeof(MIXERCONTROL)));
mlc.dwControlType = MIXERCONTROL_CONTROLTYPE.MUTE;
errorCode = (MMErrors)MixerNative.mixerGetLineControls(mHMixer, ref mlc, MIXER_GETLINECONTROLSFLAG.ALL);
for (int k = 0; k < mlc.cControls; k++)
{
MIXERCONTROL mc = (MIXERCONTROL)Marshal.PtrToStructure((IntPtr)(((byte *)pmc) + (Marshal.SizeOf(typeof(MIXERCONTROL)) * k)), typeof(MIXERCONTROL));
if (mc.dwControlType == (uint)MIXERCONTROL_CONTROLTYPE.MUTE)
{
MicInterface.muteOrUnMuteMixerControl(mute, mHMixer, mc.dwControlID);
}
}
}
}
}
}
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
finally
{
if (mHMixer != IntPtr.Zero)
{
MixerNative.mixerClose(mHMixer);
}
}
}
internal static extern int mixerGetLineInfo(IntPtr hmxobj, ref MIXERLINE pmxl, MIXER_GETLINEINFOF fdwInfo);