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
#include <string>
#include <vector>       // we use the STL vector, map, and string classes

using namespace std;

namespace csl {

class PADevice {
public:                 
    PADevice(string name, unsigned index, unsigned maxIn, unsigned maxOut, bool isIn, bool isOut) :
        mName(name), mIndex(index), mMaxInputChannels(maxIn), mMaxOutputChannels(maxOut), 
        mIsDefaultIn(isIn), mIsDefaultOut(isOut) { /* no-op */ };

    string mName;                   
    unsigned mIndex;                
    unsigned mMaxInputChannels;     
    unsigned mMaxOutputChannels;    
    vector<float> mFrameRates;      
    bool mIsDefaultIn;              
    bool mIsDefaultOut;             
};

// IOs hold onto device vectors

typedef vector<PADevice *> PADeviceVector;

class PAIO : public IO {

public:
    PAIO();         

    PAIO(unsigned s_rate, unsigned b_size);
    PAIO(int in_stream, int out_stream, unsigned in_chans, unsigned out_chans);
    PAIO(unsigned s_rate, unsigned b_size, PaDeviceIndex in_device, PaDeviceIndex out_device, unsigned in_chans, unsigned out_chans);
    ~PAIO();                    

    void open() throw(CException);          
    void start() throw(CException);         
    void stop() throw(CException);          
    void close() throw(CException);         
    void test() throw(CException);          
    
    Buffer & getInput() throw(CException);  
    Buffer & getInput(unsigned numFrames, unsigned numChannels) throw(CException);      

    PaStream * mStream;                 
    sample * mInputPointer;             
    unsigned *mChannelMap;

protected:
    PaStreamParameters *mInputParameters;   
    PaStreamParameters *mOutputParameters;
    
    PaDeviceIndex mInDev, mOutDev;          
    PADeviceVector mDevices;
    void handleError(PaError result) throw(CException);
    void initialize(unsigned sr, unsigned bs, int is, int os, unsigned ic, unsigned oc);
};

}

#endif

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