/*

*/

struct S_AudioFileManager;

typedef struct S_AudioFilePlayer

//public:

    int             (*SetDestination)(struct S_AudioFilePlayer *afp, AudioUnit *inDestUnit);

    void            (*SetNotifier)(struct S_AudioFilePlayer *afp, AudioFilePlayNotifier inNotifier, void *inRefCon);

    void            (*SetStartFrame)(struct S_AudioFilePlayer *afp, int frame); // seek in the file

    int             (*GetCurrentFrame)(struct S_AudioFilePlayer *afp); // get the current frame position

    void            (*SetStopFrame)(struct S_AudioFilePlayer *afp, int frame);   // set limit in the file

    int             (*Connect)(struct S_AudioFilePlayer *afp);

    void            (*Disconnect)(struct S_AudioFilePlayer *afp);

    void            (*DoNotification)(struct S_AudioFilePlayer *afp, OSStatus inError);

    int             (*IsConnected)(struct S_AudioFilePlayer *afp);

    AudioUnit       (*GetDestUnit)(struct S_AudioFilePlayer *afp);

    void            (*Print)(struct S_AudioFilePlayer *afp);

//private:

    int                             mConnected;

    struct S_AudioFileManager*      mAudioFileManager;

    int          (*OpenFile)(struct S_AudioFilePlayer *afp, const FSRef *inRef, SInt64 *outFileSize);

} AudioFilePlayer;

AudioFilePlayer *new_AudioFilePlayer(const FSRef    *inFileRef);

void delete_AudioFilePlayer(AudioFilePlayer *afp);

typedef struct S_AudioFileManager

//public:

    void                (*Disconnect)(struct S_AudioFileManager *afm);

    int                 (*DoConnect)(struct S_AudioFileManager *afm);

    OSStatus            (*Read)(struct S_AudioFileManager *afm, char *buffer, UInt32 *len);

    const char*         (*GetFileBuffer)(struct S_AudioFileManager *afm);

    const AudioFilePlayer *(*GetParent)(struct S_AudioFileManager *afm);

    void                (*SetPosition)(struct S_AudioFileManager *afm, SInt64 pos);  // seek/rewind in the file

    int                 (*GetByteCounter)(struct S_AudioFileManager *afm);  // return actual bytes streamed to audio hardware

    void                (*SetEndOfFile)(struct S_AudioFileManager *afm, SInt64 pos);  // set the "EOF" (will behave just like it reached eof)

//protected:

    AudioFilePlayer*    mParent;

    int                mReadFromFirstBuffer;

    int                mLockUnsuccessful;

    int                mIsEngaged;

//public:

    UInt32              mChunkSize;

    int                 mWriteToFirstBuffer;

    int                 mFinishedReadingData;

//protected:

    OSStatus            (*Render)(struct S_AudioFileManager *afm, AudioBuffer *ioData);

    OSStatus            (*GetFileData)(struct S_AudioFileManager *afm, void** inOutData, UInt32 *inOutDataSize);

    void                (*AfterRender)(struct S_AudioFileManager *afm);

//public:

    //static

    OSStatus            (*FileInputProc)(void                             *inRefCon,

                                         AudioUnitRenderActionFlags      inActionFlags,

                                         const AudioTimeStamp            *inTimeStamp,

                                         UInt32                          inBusNumber,

                                         AudioBuffer                     *ioData);

} AudioFileManager;

AudioFileManager *new_AudioFileManager (AudioFilePlayer *inParent,

                      SInt16          inForkRefNum, 

                      SInt64          inFileLength,

                      UInt32          inChunkSize);

void delete_AudioFileManager(AudioFileManager *afm);