/*

     File: CAPlayThrough.h 

 Abstract: CAPlayThough Classes. 

  Version: 1.2.2 

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*/

#ifndef __CAPlayThrough_H__

#define __CAPlayThrough_H__

#define checkErr( err) \

if(err) {\

    OSStatus error = static_cast<OSStatus>(err);\

        fprintf(stdout, "CAPlayThrough Error: %ld ->  %s:  %d\n",  (long)error,\

               __FILE__, \

               __LINE__\

               );\

                   fflush(stdout);\

        return err; \

}         

#include <CoreAudio/CoreAudio.h>

#include <AudioToolbox/AudioToolbox.h>

#include <AudioUnit/AudioUnit.h>

#include "CARingBuffer.h"

#include "AudioDevice.h"

#include "CAStreamBasicDescription.h"

class CAPlayThrough;

// This class will manage the lifecycle of the play through objects

class CAPlayThroughHost

{

public:

    CAPlayThroughHost(AudioDeviceID input, AudioDeviceID output);

    ~CAPlayThroughHost();

    void        CreatePlayThrough(AudioDeviceID input, AudioDeviceID output);

    void        DeletePlayThrough();

    bool        PlayThroughExists();

    OSStatus    Start();

    OSStatus    Stop();

    Boolean     IsRunning();    

private:

    CAPlayThrough* GetPlayThrough() { return mPlayThrough; }

    void AddDeviceListeners(AudioDeviceID input);

    void RemoveDeviceListeners(AudioDeviceID input);

    void ResetPlayThrough();

    // this sample now uses AudioObjectAddPropertyListenerBlock instead of AudioObjectAddPropertyListener

    /*static OSStatus StreamListener(AudioObjectID inObjectID,

                                   UInt32 inNumberAddresses,

                                   const AudioObjectPropertyAddress inAddresses[],

                                   void* inClientData);*/

    dispatch_queue_t StreamListenerQueue;

    AudioObjectPropertyListenerBlock StreamListenerBlock;

private:

    CAPlayThrough *mPlayThrough;

};

#endif //__CAPlayThrough_H__