JackIO.h

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//
//  JackIO.h -- Driver IO object for CSL on Jack
//  See the copyright notice and acknowledgment of authors in the file COPYRIGHT
//

#ifndef CSL_JACKIO_H
#define CSL_JACKIO_H

#include "CSL_Core.h"

#include <jack/jack.h>

namespace csl {

//extern "C" int JackCallback (jack_nframes_t nframes, void *arg);

///
/// JackIO is an IO that uses a thread and a timer to call its graph's nextBuffer(); it doesn't do
/// anything with the resulting buffer, but assumes that other objects (observers of the graph)
/// will handle some actual IO. 
///
class JackIO : public IO {
public:             
    JackIO();                       ///< Constructor
    JackIO(unsigned s_rate, unsigned b_size, 
        int in_device = 0, int out_device = 0, 
        unsigned in_chans = 0, unsigned out_chans = 2);
    virtual ~JackIO();
    
    void open() throw(CException);          ///< open/close start/stop methods
    void close() throw(CException);
    void start() throw(CException);         ///< start my timer thread
    void stop() throw(CException);          ///< stop the timer thread

    jack_port_t * mInput_port;
    jack_port_t * mOutput_port;
    jack_client_t * mClient;
};


}   // end of namespace

#endif CSL_JACKIO_H