public SimplePlayEngine (Action componentsFoundCallback = null)
{
PresetList = new AUAudioUnitPreset [0];
this.componentsFoundCallback = componentsFoundCallback;
engine.AttachNode (player);
var fileUrl = NSBundle.MainBundle.GetUrlForResource ("drumLoop", "caf");
if (fileUrl == null)
throw new NullReferenceException ("drumploop.caf file not found");
SetPlayerFile (fileUrl);
if (componentsFoundCallback != null) {
UpdateEffectsList ();
AUAudioUnit.Notifications.ObserveAudioComponentRegistrationsChanged ((sender, e) => UpdateEffectsList ());
}
var error = AVAudioSession.SharedInstance ().SetCategory (AVAudioSessionCategory.Playback);
if (error != null)
throw new NSErrorException(error);
AUAudioUnit.Notifications.ObserveAudioComponentInstanceInvalidation ((sender, e) => {
var crashedAU = e.Notification.Object as AUAudioUnit;
if (AudioUnit == crashedAU)
SelectEffectWithComponentDescription (null, null);
});
}
public void SelectEffectWithComponentDescription(AudioComponentDescription?componentDescription, Action completionHandler)
{
if (isPlaying)
{
player.Pause();
}
if (effect != null)
{
engine.DisconnectNodeInput(effect);
engine.DisconnectNodeInput(engine.MainMixerNode);
engine.Connect(player, engine.MainMixerNode, file.ProcessingFormat);
engine.DetachNode(effect);
effect = null;
AudioUnit = null;
PresetList = new AUAudioUnitPreset[0];
}
if (componentDescription.HasValue)
{
AVAudioUnit.FromComponentDescription(componentDescription.Value, AudioComponentInstantiationOptions.OutOfProcess, (avAudioUnitEffect, AVError) => {
if (AVError != null || avAudioUnitEffect == null)
{
Console.WriteLine("SelectEffectWithComponentDescription error!");
return;
}
effect = avAudioUnitEffect;
engine.AttachNode(avAudioUnitEffect);
engine.DisconnectNodeInput(engine.MainMixerNode);
engine.Connect(player, avAudioUnitEffect, file.ProcessingFormat);
engine.Connect(avAudioUnitEffect, engine.MainMixerNode, file.ProcessingFormat);
AudioUnit = avAudioUnitEffect.AUAudioUnit;
PresetList = avAudioUnitEffect.AUAudioUnit.FactoryPresets ?? new AUAudioUnitPreset[0];
Done(completionHandler);
});
}
else
{
Done(completionHandler);
}
}
public SimplePlayEngine(Action componentsFoundCallback = null)
{
PresetList = new AUAudioUnitPreset [0];
this.componentsFoundCallback = componentsFoundCallback;
engine.AttachNode(player);
var fileUrl = NSBundle.MainBundle.GetUrlForResource("drumLoop", "caf");
if (fileUrl == null)
{
throw new NullReferenceException("drumploop.caf file not found");
}
SetPlayerFile(fileUrl);
if (componentsFoundCallback != null)
{
UpdateEffectsList();
AUAudioUnit.Notifications.ObserveAudioComponentRegistrationsChanged((sender, e) => UpdateEffectsList());
}
#if __IOS__
var error = AVAudioSession.SharedInstance().SetCategory(AVAudioSessionCategory.Playback);
if (error != null)
{
throw new NSErrorException(error);
}
#endif
AUAudioUnit.Notifications.ObserveAudioComponentInstanceInvalidation((sender, e) => {
var crashedAU = e.Notification.Object as AUAudioUnit;
if (AudioUnit == crashedAU)
{
SelectEffectWithComponentDescription(null, null);
}
});
}
public void SelectEffectWithComponentDescription (AudioComponentDescription? componentDescription, Action completionHandler)
{
if (isPlaying)
player.Pause ();
if (effect != null) {
engine.DisconnectNodeInput (effect);
engine.DisconnectNodeInput (engine.MainMixerNode);
engine.Connect (player, engine.MainMixerNode, file.ProcessingFormat);
engine.DetachNode (effect);
effect = null;
AudioUnit = null;
PresetList = new AUAudioUnitPreset[0];
}
if (componentDescription.HasValue) {
AVAudioUnit.FromComponentDescription (componentDescription.Value, AudioComponentInstantiationOptions.OutOfProcess, (avAudioUnitEffect, AVError) => {
if (AVError != null || avAudioUnitEffect == null) {
Console.WriteLine ("SelectEffectWithComponentDescription error!");
return;
}
effect = avAudioUnitEffect;
engine.AttachNode (avAudioUnitEffect);
engine.DisconnectNodeInput (engine.MainMixerNode);
engine.Connect (player, avAudioUnitEffect, file.ProcessingFormat);
engine.Connect (avAudioUnitEffect, engine.MainMixerNode, file.ProcessingFormat);
AudioUnit = avAudioUnitEffect.AUAudioUnit;
PresetList = avAudioUnitEffect.AUAudioUnit.FactoryPresets ?? new AUAudioUnitPreset[0];
Done (completionHandler);
});
} else {
Done (completionHandler);
}
}
