Traverso/cvs/traverso/src/common/Resampler.h

/*
Copyright (C) 2007 Remon Sijrier 

This file is part of Traverso

Traverso is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.

*/

#ifndef RESAMPLER_H
#define RESAMPLER_H

#include "defines.h"
#include <samplerate.h>


class Resampler : public QObject
{
public :
        Resampler();
        ~Resampler();
        
        void set_output_rate(uint rate);
        void set_input_rate(uint rate);
        
        void set_input_buffer(audio_sample_t* buffer);
        void set_output_buffer(audio_sample_t* buffer);
        
        int set_converter_type(int converter_type);
        int process(nframes_t frames);
        int prepare_process(nframes_t fileCnt);
        
        void reset();
        void clear_buffers();
        
private:

        SRC_STATE*              m_srcState;
        SRC_DATA                m_srcData;
        audio_sample_t*         m_overflowBuffer;
        audio_sample_t*         m_inputBuffer;
        audio_sample_t*         m_outputBuffer;
        long                    m_overflowUsed;
        uint                    m_outputRate;
        uint                    m_inputRate;
        bool                    m_isResampleAvailable;
        nframes_t               m_readExtraFrames;
        nframes_t               bufferUsed;     
        nframes_t framesRead;
};



#endif

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