/*

    File: CaptureSessionController.h

Abstract: Class that sets up a AVCaptureSession that outputs to a

 AVCaptureAudioDataOutput. The output audio samples are passed through

 an effect audio unit and are then written to a file.

 Version: 1.0

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*/

#import <AudioUnit/AudioUnit.h>

#import <AudioToolbox/AudioToolbox.h>

#import <AVFoundation/AVFoundation.h>

// CoreAudio Public Utility

#include "CAStreamBasicDescription.h"

#include "CAComponentDescription.h"

#include "CAAudioBufferList.h"

#include "AUOutputBL.h"

@interface CaptureSessionController : NSObject <AVCaptureAudioDataOutputSampleBufferDelegate> {

@private

    AVCaptureSession            *captureSession;

    AVCaptureDeviceInput        *captureAudioDeviceInput;

    AVCaptureAudioDataOutput    *captureAudioDataOutput;

    AUGraph                     auGraph;

    AudioUnit                   converterAudioUnit;

    AudioUnit                   delayAudioUnit;

    AudioChannelLayout          *currentRecordingChannelLayout;

    ExtAudioFileRef             extAudioFile;

    AudioStreamBasicDescription currentInputASBD;

    AudioStreamBasicDescription graphOutputASBD;

    AudioBufferList             *currentInputAudioBufferList;

    AUOutputBL                  *outputBufferList;

    double                      currentSampleTime;

    BOOL                        didSetUpAudioUnits;

}

@property(atomic, getter=isRecording) BOOL recording;

@property                             CFURLRef outputFile;

- (BOOL)setupCaptureSession;

- (void)startCaptureSession;

- (void)stopCaptureSession;

- (void)startRecording;

- (void)stopRecording;

@end