public Audio(DisposableI parent)
: base(parent)
{
#if OSX
component = AudioComponent.FindComponent(AudioTypeOutput.Default);
#else
component = AudioComponent.FindComponent(AudioTypeOutput.Remote);
#endif
if (component == null) Debug.ThrowError("Audio", "Failed to find AudioComponent");
}
public static AudioComponent FindNextComponent(AudioComponent cmp, AudioComponentDescription cd)
{
// Getting component hanlder
IntPtr handle;
if (cmp == null)
{
handle = AudioComponentFindNext(IntPtr.Zero, cd);
}
else
{
handle = AudioComponentFindNext(cmp.Handle, cd);
}
// creating an instance
if (handle != IntPtr.Zero)
{
return(new AudioComponent(handle));
}
else
{
return(null);
}
}
public AudioUnit(AudioComponent component)
{
if (component == null)
{
throw new ArgumentNullException("component");
}
if (component.Handle == IntPtr.Zero)
{
throw new ObjectDisposedException("component");
}
int err = AudioComponentInstanceNew(component.handle, out handle);
if (err != 0)
{
throw new AudioUnitException(err);
}
gcHandle = GCHandle.Alloc(this);
#pragma warning disable 612
BrokenSetRender();
#pragma warning restore 612
}
public AudioUnit(AudioComponent component)
{
if (component == null)
{
throw new ArgumentNullException("component");
}
if (component.Handle == IntPtr.Zero)
{
throw new ObjectDisposedException("component");
}
int err = AudioComponentInstanceNew(component.handle, out handle);
if (err != 0)
{
throw new AudioUnitException(err);
}
_isPlaying = false;
gcHandle = GCHandle.Alloc(this);
var callbackStruct = new AURenderCallbackStrct();
callbackStruct.inputProc = renderCallback; // setting callback function
callbackStruct.inputProcRefCon = GCHandle.ToIntPtr(gcHandle); // a pointer that passed to the renderCallback (IntPtr inRefCon)
err = AudioUnitSetProperty(handle,
AudioUnitPropertyIDType.SetRenderCallback,
AudioUnitScopeType.Input,
0, // 0 == speaker
callbackStruct,
(uint)Marshal.SizeOf(callbackStruct));
if (err != 0)
{
throw new AudioUnitException(err);
}
}
