private void SetValue(MixerComponentType componentType, MixerControlType controlType, int controlValue)
{
MixerNativeMethods.MixerLine mixerLine = new MixerNativeMethods.MixerLine(componentType);
if (MixerNativeMethods.mixerGetLineInfoA(_handle, ref mixerLine, MixerLineFlags.ComponentType) != MixerError.None)
{
throw new InvalidOperationException("Mixer.SetValue.1");
}
using (
MixerNativeMethods.MixerLineControls mixerLineControls =
new MixerNativeMethods.MixerLineControls(mixerLine.LineId, controlType))
{
if (MixerNativeMethods.mixerGetLineControlsA(_handle, mixerLineControls, MixerLineControlFlags.OneByType) !=
MixerError.None)
{
throw new InvalidOperationException("Mixer.SetValue.2");
}
MixerNativeMethods.MixerControl mixerControl =
(MixerNativeMethods.MixerControl)
Marshal.PtrToStructure(mixerLineControls.Data, typeof(MixerNativeMethods.MixerControl));
using (
MixerNativeMethods.MixerControlDetails mixerControlDetails =
new MixerNativeMethods.MixerControlDetails(mixerControl.ControlId))
{
Marshal.WriteInt32(mixerControlDetails.Data, controlValue);
MixerNativeMethods.mixerSetControlDetails(_handle, mixerControlDetails, 0);
}
}
}
private MixerNativeMethods.MixerControlDetails GetControl(MixerComponentType componentType,
MixerControlType controlType)
{
MixerNativeMethods.MixerLine mixerLine = new MixerNativeMethods.MixerLine(componentType);
if (MixerNativeMethods.mixerGetLineInfoA(_handle, ref mixerLine, MixerLineFlags.ComponentType) != MixerError.None)
{
throw new InvalidOperationException("Mixer.GetControl.1");
}
using (
MixerNativeMethods.MixerLineControls mixerLineControls =
new MixerNativeMethods.MixerLineControls(mixerLine.LineId, controlType))
{
if (MixerNativeMethods.mixerGetLineControlsA(_handle, mixerLineControls, MixerLineControlFlags.OneByType) !=
MixerError.None)
{
throw new InvalidOperationException("Mixer.GetControl.2");
}
MixerNativeMethods.MixerControl mixerControl =
(MixerNativeMethods.MixerControl)
Marshal.PtrToStructure(mixerLineControls.Data, typeof(MixerNativeMethods.MixerControl));
return(new MixerNativeMethods.MixerControlDetails(mixerControl.ControlId));
}
}
private object GetValue(MixerComponentType componentType, MixerControlType controlType)
{
try
{
MixerNativeMethods.MixerLine mixerLine = new MixerNativeMethods.MixerLine(componentType);
if (MixerNativeMethods.mixerGetLineInfoA(_handle, ref mixerLine, MixerLineFlags.ComponentType) !=
MixerError.None)
{
throw new InvalidOperationException("Mixer.OpenControl.1");
}
using (
MixerNativeMethods.MixerLineControls mixerLineControls =
new MixerNativeMethods.MixerLineControls(mixerLine.LineId, controlType))
{
MixerNativeMethods.mixerGetLineControlsA(_handle, mixerLineControls, MixerLineControlFlags.OneByType);
MixerNativeMethods.MixerControl mixerControl =
(MixerNativeMethods.MixerControl)
Marshal.PtrToStructure(mixerLineControls.Data, typeof(MixerNativeMethods.MixerControl));
using (
MixerNativeMethods.MixerControlDetails mixerControlDetails =
new MixerNativeMethods.MixerControlDetails(mixerControl.ControlId))
{
MixerNativeMethods.mixerGetControlDetailsA(_handle, mixerControlDetails, 0);
return(Marshal.ReadInt32(mixerControlDetails.Data));
}
}
}
catch (Exception ex)
{
// Catch exception when audio device is disconnected
Log.Error("Mixer: GetValue {0}", ex.Message);
}
// Set Volume to 30000 when audio recover
return(30000);
}
private MixerNativeMethods.MixerControlDetails GetControl(MixerComponentType componentType,
MixerControlType controlType)
{
try
{
MixerNativeMethods.MixerLine mixerLine = new MixerNativeMethods.MixerLine(componentType);
if (MixerNativeMethods.mixerGetLineInfoA(_handle, ref mixerLine, MixerLineFlags.ComponentType) !=
MixerError.None)
{
throw new InvalidOperationException("Mixer.GetControl.1");
}
using (
MixerNativeMethods.MixerLineControls mixerLineControls =
new MixerNativeMethods.MixerLineControls(mixerLine.LineId, controlType))
{
if (MixerNativeMethods.mixerGetLineControlsA(_handle, mixerLineControls, MixerLineControlFlags.OneByType) !=
MixerError.None)
{
throw new InvalidOperationException("Mixer.GetControl.2");
}
MixerNativeMethods.MixerControl mixerControl =
(MixerNativeMethods.MixerControl)
Marshal.PtrToStructure(mixerLineControls.Data, typeof(MixerNativeMethods.MixerControl));
return(new MixerNativeMethods.MixerControlDetails(mixerControl.ControlId));
}
}
catch (Exception ex)
{
// Catch exception when audio device is disconnected
Log.Error("Mixer: GetControl {0}", ex.Message);
}
return(null);
}
