private void ednw_EventHandler(ref Message m, ref bool handled)
{
if (!CreateEvents)
{
return;
}
if (m.Msg == MM_MIXM_CONTROL_CHANGE && m.WParam == hMixer)
{
int ctrlID = m.LParam.ToInt32();
MixerControl c = FindControl(ctrlID);
if (c != null)
{
ControlChanged?.Invoke(this, new MixerEventArgs(this, c.Line, c));
c.OnChanged();
}
}
else if (m.Msg == MM_MIXM_LINE_CHANGE && m.WParam == hMixer)
{
int lineID = m.LParam.ToInt32();
MixerLine l = FindLine(lineID);
if (l != null)
{
if (ControlChanged != null)
{
LineChanged(this, new MixerEventArgs(this, l, null));
}
l.OnChanged();
}
}
}
/// <summary>
/// Find a control of this mixer by ID.
/// </summary>
/// <param name="ctrlId">ID of the control to find.</param>
/// <returns>The control, or <code>null</code> if no control was found.</returns>
public MixerControl FindControl(int ctrlId)
{
foreach (DestinationLine dl in DestinationLines)
{
MixerControl found = dl.findControl(ctrlId);
if (found != null)
{
return(found);
}
}
return(null);
}
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 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);
}
internal MixerControl findControl(int ctrlId)
{
foreach (MixerControl c in Controls)
{
if (c.Id == ctrlId)
{
return(c);
}
}
foreach (MixerLine l in ChildLines)
{
MixerControl found = l.findControl(ctrlId);
if (found != null)
{
return(found);
}
}
return(null);
}
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) { }
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 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;
}
/// <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;
}
/// <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)
{
Mixer = mixer;
Line = line;
Control = control;
}
/// <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;
}
