PAIO.h

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//
//  PAIO.h -- DAC IO using PortAudio
//  See the copyright notice and acknowledgment of authors in the file COPYRIGHT
//

#ifndef CSL_PAIO_H
#define CSL_PAIO_H

#include "CSL_Core.h"

#include "portaudio.h"  // the portaudio header file in /usr/local/include

using namespace std;

namespace csl {

///
/// The PortAudio IO class
///

class PAIO : public IO {

public:
    PAIO(unsigned s_rate = CSL_mFrameRate, unsigned b_size = CSL_mBlockSize, 
            int in_device = -1, int out_device = -1, 
            unsigned in_chans = 0, unsigned out_chans = 2);
    ~PAIO();                    ///< Destructor

    void open() throw(CException);          ///< open the IO
    void start() throw(CException);         ///< start the callbacks
    void stop() throw(CException);          ///< stop the callbacks
    void close() throw(CException);         ///< close the IO
    void test() throw(CException);          ///< test the IO's graph

    PaStream * mStream;                 ///< the PortAudio stream we play out/get data from

protected:
    PaStreamParameters * mInputParameters;  ///< PA IO stream parameters
    PaStreamParameters * mOutputParameters;
    
    PaDeviceIndex mInDev, mOutDev;          ///< IO device numbers
    IODeviceVector mDevices;
                                            /// print the error message
    void handleError(PaError result) throw(CException);
                                            /// Actually initialize PortAudio driver
    void initialize(unsigned sr, unsigned bs, int is, int os, unsigned ic, unsigned oc);
};

}

#endif