#pragma once
#ifdef __APPLE__

#include <Availability.h>

#if __MAC_OS_X_VERSION_MAX_ALLOWED >= 101100
#define AMUSE_HAS_AUDIO_UNIT 1

#include <AudioUnit/AudioUnit.h>

#include "optional.hpp"

#include "amuse/BooBackend.hpp"
#include "amuse/Engine.hpp"
#include "amuse/IBackendVoice.hpp"
#include "amuse/IBackendSubmix.hpp"
#include "amuse/IBackendVoiceAllocator.hpp"
#import "AudioGroupFilePresenter.hpp"

@class AudioUnitViewController;

namespace amuse {

/** Backend voice allocator implementation for AudioUnit mixer */
class AudioUnitBackendVoiceAllocator : public BooBackendVoiceAllocator {
public:
  AudioUnitBackendVoiceAllocator(boo::IAudioVoiceEngine& booEngine) : BooBackendVoiceAllocator(booEngine) {}
};

void RegisterAudioUnit();
} // namespace amuse

@interface AmuseAudioUnit : AUAudioUnit <AudioGroupClient> {
@public
  AudioUnitViewController* m_viewController;
  std::unique_ptr<boo::IAudioVoiceEngine> m_booBackend;
  std::experimental::optional<amuse::AudioUnitBackendVoiceAllocator> m_voxAlloc;
  std::experimental::optional<amuse::Engine> m_engine;
  AudioGroupFilePresenter* m_filePresenter;
  AUAudioUnitBus* m_outBus;
  AUAudioUnitBusArray* m_outs;
}
- (nullable id)initWithComponentDescription:(AudioComponentDescription)componentDescription
                                      error:(NSError* __nullable* __nonnull)outError
                             viewController:(AudioUnitViewController* __nonnull)vc;
- (void)requestAudioGroup:(AudioGroupToken* _Nonnull)group;
@end

#endif
#endif