private static MixerControl GetControl(Mixer mx, MixerLine ml, MIXERCONTROL mc)
{
MixerControl result = new MixerControl(mx, ml, mc);
if (result.Class == MixerControlClass.FADER && ((uint)result.ControlType & MIXERCONTROL_CT_UNITS_MASK) == (uint)MixerControlType.MIXERCONTROL_CT_UNITS_UNSIGNED)
{
result = new FaderMixerControl(mx, ml, mc);
}
else if (result.Class == MixerControlClass.SWITCH && ((uint)result.ControlType & MIXERCONTROL_CT_SUBCLASS_MASK) == (uint)MixerControlType.MIXERCONTROL_CT_SC_SWITCH_BOOLEAN && ((uint)result.ControlType & MIXERCONTROL_CT_UNITS_MASK) == (uint)MixerControlType.MIXERCONTROL_CT_UNITS_BOOLEAN)
{
result = new BooleanMixerControl(mx, ml, mc);
}
return result;
}
internal FaderMixerControl(Mixer mx, MixerLine ml, MixerControl.MIXERCONTROL mc) : base(mx, ml, mc) { }
/// <summary>
/// Initializes a new instance of the
/// <see cref="MixerEventArgs">MixerEventArgs</see> class.
/// </summary>
/// <param name="mixer">The affected mixer</param>
/// <param name="line">The affected line</param>
/// <param name="control">The affected control, or <code>null</code>
/// if this is a LineChanged event.</param>
public MixerEventArgs(Mixer mixer, MixerLine line, MixerControl control)
{
this.mixer = mixer;
this.line = line;
this.control = control;
}
internal static MixerControl[] GetControls(Mixer mx, MixerLine line, int controlCount)
{
if (controlCount == 0) return new MixerControl[0];
MIXERCONTROL[] mc = new MIXERCONTROL[controlCount];
int mxsize = Marshal.SizeOf(mc[0]);
if (mxsize != 148) throw new Exception("" + mxsize);
//mxsize = 148;
MIXERLINECONTROLS mlc = new MIXERLINECONTROLS();
mlc.cbStruct = Marshal.SizeOf(mlc);
mlc.cControls = controlCount;
mlc.dwLineID = line.Id;
mlc.pamxctrl = Marshal.AllocCoTaskMem(mxsize * controlCount);
mlc.cbmxctrl = mxsize;
int err;
if ((err = mixerGetLineControlsA(mx.Handle, ref mlc, MIXER_GETLINECONTROLSF_ALL)) != 0)
{
throw new Win32Exception("Error #" + err + " calling mixerGetLineControls()\n");
}
for (int i = 0; i < controlCount; i++)
{
mc[i] = (MIXERCONTROL)Marshal.PtrToStructure(new IntPtr(mlc.pamxctrl.ToInt64() + mxsize * i), typeof(MIXERCONTROL));
}
Marshal.FreeCoTaskMem(mlc.pamxctrl);
MixerControl[] result = new MixerControl[controlCount];
for (int i = 0; i < controlCount; i++)
{
result[i] = GetControl(mx, line, mc[i]);
}
return result;
}
private SourceLine(Mixer m, MIXERLINE l)
: base(m, l)
{
}
internal static SourceLine GetLine(Mixer mixer, int destIndex, int srcIndex)
{
MIXERLINE m = new MIXERLINE();
m.cbStruct = Marshal.SizeOf(m);
m.dwDestination = destIndex;
m.dwSource = srcIndex;
mixerGetLineInfoA(mixer.Handle, ref m, MIXER_GETLINEINFOF_SOURCE);
return new SourceLine(mixer, m);
}
internal static DestinationLine GetLine(Mixer mixer, int index)
{
MIXERLINE m = new MIXERLINE();
m.cbStruct = Marshal.SizeOf(m);
m.dwDestination = index;
mixerGetLineInfoA(mixer.Handle, ref m, MIXER_GETLINEINFOF_DESTINATION);
return new DestinationLine(mixer, m);
}
private SourceLine(Mixer m, MIXERLINE l) : base(m, l)
{
}
/// <summary>
/// Initializes a new instance of the
/// <see cref="MixerEventArgs">MixerEventArgs</see> class.
/// </summary>
/// <param name="mixer">The affected mixer</param>
/// <param name="line">The affected line</param>
/// <param name="control">The affected control, or <code>null</code>
/// if this is a LineChanged event.</param>
public MixerEventArgs(Mixer mixer, MixerLine line, MixerControl control)
{
this.mixer = mixer;
this.line = line;
this.control = control;
}
private DestinationLine(Mixer mixer, MIXERLINE line)
: base(mixer, line)
{
}
internal BooleanMixerControl(Mixer mx, MixerLine ml, MixerControl.MIXERCONTROL mc) : base(mx, ml, mc)
{
}
internal FaderMixerControl(Mixer mx, MixerLine ml, MixerControl.MIXERCONTROL mc) : base(mx, ml, mc)
{
}
internal MixerControl(Mixer mx, MixerLine ml, MIXERCONTROL ctrl)
{
this.mx = mx;
this.ml = ml;
this.ctrl = ctrl;
}
internal BooleanMixerControl(Mixer mx, MixerLine ml, MixerControl.MIXERCONTROL mc) : base(mx, ml, mc) { }
internal MixerLine(Mixer mixer, MIXERLINE line)
{
this.mixer = mixer;
this.line = line;
}
internal MixerControl(Mixer mx, MixerLine ml, MIXERCONTROL ctrl)
{
this.mx = mx;
this.ml = ml;
this.ctrl = ctrl;
}
private void mixers_SelectedIndexChanged(object sender, EventArgs e)
{
if (mixers.SelectedIndex == -1) return;
if (mix != null) mix.Dispose();
mix = Mixer.OpenMixer((uint)mixers.SelectedIndex);
mix.CreateEvents = true;
destLines.Items.Clear();
foreach (DestinationLine dl in mix.DestinationLines)
{
destLines.Items.Add(dl.Name);
}
destLines_SelectedIndexChanged(this, e);
}
