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WAVAudioFile.h

// -*- c-basic-offset: 4 -*-

/*
    Rosegarden
    A sequencer and musical notation editor.
    Copyright 2000-2009 the Rosegarden development team.
    See the AUTHORS file for more details.

    This program 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.  See the file
    COPYING included with this distribution for more information.
*/


// Specialisation of a RIFF file - the WAV defines a format chunk
// holding audio file meta data and a data chunk with interleaved
// sample bytes.
//

#include "RIFFAudioFile.h"


#ifndef _WAVAUDIOFILE_H_
#define _WAVAUDIOFILE_H_

namespace Rosegarden
{

class WAVAudioFile : public RIFFAudioFile
{
public:
    WAVAudioFile(const unsigned int &id,
                 const std::string &name,
                 const std::string &fileName);

    WAVAudioFile(const std::string &fileName,
                  unsigned int channels,
                  unsigned int sampleRate,
                  unsigned int bytesPerSecond,
                  unsigned int bytesPerSample,
                  unsigned int bitsPerSample);

    ~WAVAudioFile();

    // Override these methods for the WAV
    //
    virtual bool open();
    virtual bool write();
    virtual void close();

    // Decode and de-interleave the given samples that were retrieved
    // from this file or another with the same format as it.  Place
    // the results in the given float buffer.  Return true for
    // success.  This function does crappy resampling if necessary.
    // 
    virtual bool decode(const unsigned char *sourceData,
                        size_t sourceBytes,
                        size_t targetSampleRate,
                        size_t targetChannels,
                        size_t targetFrames,
                        std::vector<float *> &targetData,
                        bool addToResultBuffers = false);

    // Get all header information
    //
    void parseHeader();

    // Offset to start of sample data
    //
    virtual std::streampos getDataOffset();

    // Peak file name
    //
    virtual std::string getPeakFilename()
        { return (m_fileName + std::string(".pk")); }


protected:

};

}


#endif // _WAVAUDIOFILE_H_

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