/Users/ljp/code/gamma/trunk/Gamma/Recorder.h

#ifndef GAMMA_RECORDER_H_INC
#define GAMMA_RECORDER_H_INC

/*  Gamma - Generic processing library
    See COPYRIGHT file for authors and license information */

#include <stdlib.h>
#include <vector>

namespace gam{

class Recorder {
public:

    Recorder(int channels=1, int frames=8192);


    int channels() const { return mChans; }
    
    int frames() const { return size()/channels(); }

    int size() const { return mRing.size(); }

    void overwrite(float v, int chan){
        mRing[mIW+chan] = v;
    }

    void write(float v, int chan=0){
        overwrite(v,chan);
        if((mIW+=channels()) >= (int)mRing.size()) mIW=0;       
    }

    void write(float v1, float v2, int chan=0){
        overwrite(v1,chan);
        overwrite(v2,chan+1);
        if((mIW+=channels()) >= (int)mRing.size()) mIW=0;       
    }
    

    int read(float *& buf);

    
    void resize(int chans, int frames);

protected:
    int mChans; // no. of interleaved channels
    int mIW;    // index of next sample to write
    int mIR;    // start index for reading
    std::vector<float> mRing;
    std::vector<float> mRead;
};

} // gam::
#endif