CAIO.h

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//
//  CAIO.h -- DAC IO using CoreAudio -- Abstract AUIO class and concrete CAIO class
//  See the copyright notice and acknowledgment of authors in the file COPYRIGHT
//

#ifndef CSL_CAIO_H
#define CSL_CAIO_H

#include "CSL_Core.h"

#include <AudioUnit/AudioUnit.h>                // main AU include

using namespace std;

namespace csl {

///
/// General-purpose AudioUnit IO class
///

class AUIO : public IO {
public: 
    AUIO();
    AUIO(unsigned s_rate, unsigned b_size, int in_device, int out_device, unsigned in_chans, unsigned out_chans);
    ~AUIO();

    virtual void open() throw(CException);              ///< open/close start/stop methods
    virtual void close() throw(CException);
    virtual void start() throw(CException);
    virtual void stop() throw(CException);

    void setAudioUnit(AudioUnit au) { mAudioUnit = au; };
    virtual Buffer & getInput() throw(CException);      ///< get the current input buffer
    virtual Buffer & getInput(unsigned numFrames, unsigned numChannels) throw(CException);      ///< get the current input buffer

protected:
    AudioUnit mAudioUnit;                           // The AudioUnit we play out
    void handleError(OSStatus result) throw(CException);
};

///
/// CoreAudio IO class
///

class CAIO : public AUIO {
public:
    CAIO();                                         /// Most verbose constructor -- specify everything
    CAIO(unsigned s_rate, unsigned b_size, int in_device, int out_device, unsigned in_chans, unsigned out_chans);
    ~CAIO();

    void open() throw(CException);              ///< open/close start/stop methods
    void close() throw(CException);
    void start() throw(CException);
    void stop() throw(CException);

protected:
    void handleError(OSStatus result) throw(CException);
    
};

}

#endif