public void SetMute(MixerInfo mi, bool mute)
{
MIXERCONTROLDETAILS mcd = new MIXERCONTROLDETAILS();
mcd.cbStruct = (uint)Marshal.SizeOf(typeof(MIXERCONTROLDETAILS));
mcd.dwControlID = mi.muteCtl;
mcd.cMultipleItems = 0;
mcd.cChannels = 1;
mcd.cbDetails = 4;
mcd.paDetails = Marshal.AllocHGlobal((int)mcd.cbDetails);
Marshal.WriteInt32(mcd.paDetails, mute ? 1 : 0);
WinMNWarpConstants.mixerSetControlDetails(IntPtr.Zero, ref mcd, MIXER.GETCONTROLDETAILSF_VALUE | MIXER.OBJECTF_MIXER);
Marshal.FreeHGlobal(mcd.paDetails);
}
public void SetVolume(MixerInfo mi, VOLUME volume)
{
MIXERCONTROLDETAILS mcd = new MIXERCONTROLDETAILS();
mcd.cbStruct = (uint)Marshal.SizeOf(typeof(MIXERCONTROLDETAILS));
mcd.dwControlID = mi.volumeCtl;
mcd.cMultipleItems = 0;
mcd.cChannels = 2;
mcd.cbDetails = (uint)Marshal.SizeOf(typeof(int));
mcd.paDetails = Marshal.AllocHGlobal((int)mcd.cbDetails);
Marshal.StructureToPtr(volume, mcd.paDetails, false);
WinMNWarpConstants.mixerSetControlDetails(IntPtr.Zero, ref mcd, MIXER.GETCONTROLDETAILSF_VALUE | MIXER.OBJECTF_MIXER);
Marshal.FreeHGlobal(mcd.paDetails);
}
public void AdjustVolume(MixerInfo mi, int delta)
{
VOLUME volume = GetVolume(mi);
if (delta > 0)
{
volume.left = Math.Min(mi.maxVolume, volume.left + delta);
volume.right = Math.Min(mi.maxVolume, volume.right + delta);
}
else
{
volume.left = Math.Max(mi.minVolume, volume.left + delta);
volume.right = Math.Max(mi.minVolume, volume.right + delta);
}
SetVolume(mi, volume);
}
public bool IsMuted(MixerInfo mi)
{
MIXERCONTROLDETAILS mcd = new MIXERCONTROLDETAILS();
mcd.cbStruct = (uint)Marshal.SizeOf(typeof(MIXERCONTROLDETAILS));
mcd.dwControlID = mi.muteCtl;
mcd.cMultipleItems = 0;
mcd.cChannels = 1;
mcd.cbDetails = 4;
mcd.paDetails = Marshal.AllocHGlobal((int)mcd.cbDetails);
WinMNWarpConstants.mixerGetControlDetails(IntPtr.Zero, ref mcd, MIXER.GETCONTROLDETAILSF_VALUE | MIXER.OBJECTF_MIXER);
int rtn = Marshal.ReadInt32(mcd.paDetails);
Marshal.FreeHGlobal(mcd.paDetails);
return(rtn != 0);
}
public VOLUME GetVolume(MixerInfo mi)
{
MIXERCONTROLDETAILS mcd = new MIXERCONTROLDETAILS();
mcd.cbStruct = (uint)Marshal.SizeOf(typeof(MIXERCONTROLDETAILS));
mcd.dwControlID = mi.volumeCtl;
mcd.cMultipleItems = 0;
mcd.cChannels = 2;
mcd.cbDetails = (uint)Marshal.SizeOf(typeof(int));
mcd.paDetails = Marshal.AllocHGlobal((int)mcd.cbDetails);
WinMNWarpConstants.mixerGetControlDetails(IntPtr.Zero, ref mcd, MIXER.GETCONTROLDETAILSF_VALUE | MIXER.OBJECTF_MIXER);
VOLUME rtn = (VOLUME)Marshal.PtrToStructure(mcd.paDetails, typeof(VOLUME));
Marshal.FreeHGlobal(mcd.paDetails);
return(rtn);
}
public bool GetMixerControls(out MixerInfo data)
{
MIXERLINE mxl = new MIXERLINE();
MIXERLINECONTROLS mlc = new MIXERLINECONTROLS();
mxl.cbStruct = (uint)Marshal.SizeOf(typeof(MIXERLINE));
mlc.cbStruct = (uint)Marshal.SizeOf(typeof(MIXERLINECONTROLS));
var errCode = WinMNWarpConstants.mixerGetLineInfo(IntPtr.Zero, ref mxl, MIXER.OBJECTF_MIXER | MIXER.GETLINEINFOF_DESTINATION);
mlc.dwLineID = mxl.dwLineID;
mlc.cControls = mxl.cControls;
//mlc.cbmxctrl = (uint)Marshal.SizeOf(typeof(MIXERCONTROL));
//mlc.pamxctrl = Marshal.AllocHGlobal((int)(mlc.cbmxctrl * mlc.cControls));
//WinMNWarpConstants.mixerGetLineControls(IntPtr.Zero, ref mlc, MIXER.OBJECTF_MIXER | MIXER.GETLINECONTROLSF_ALL);
//MyMixerInfo rtn = new MyMixerInfo();
data = new MixerInfo();
//for (int i = 0; i < mlc.cControls; i++)
//{
// MIXERCONTROL mxc = (MIXERCONTROL)Marshal.PtrToStructure((IntPtr)((int)mlc.pamxctrl + (int)mlc.cbmxctrl * i), typeof(MIXERCONTROL));
// switch (mxc.dwControlType)
// {
// case MIXERCONTROL_CONTROLTYPE.VOLUME:
// data.volumeCtl = mxc.dwControlID;
// data.minVolume = mxc.Bounds.lMinimum;
// data.maxVolume = mxc.Bounds.lMaximum;
// break;
// case MIXERCONTROL_CONTROLTYPE.MUTE:
// data.muteCtl = mxc.dwControlID;
// break;
// }
//}
//Marshal.FreeHGlobal(mlc.pamxctrl);
return(true);
}
