annotate data/fileio/WavFileWriter.h @ 1310:aa1b1fc2d018 mp3-gapless

Stop reporting sync errors only when we really are at eof, i.e. after the input callback has been called again (previously we just tested whether we'd buffered up all the input, which of course we do in one go at the start)

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    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.
*/

#ifndef _WAV_FILE_WRITER_H_
#define _WAV_FILE_WRITER_H_

#include <QString>

#include <sndfile.h>

#include "base/BaseTypes.h"

class DenseTimeValueModel;
class MultiSelection;
class TempWriteFile;

class WavFileWriter
{
public:
    /**
     * Specify the method used to open the destination file.
     * 
     * If WriteToTemporary, the destination will be opened as a
     * temporary file which is moved to the target location when the
     * WavFileWriter is closed or deleted (to avoid clobbering an
     * existing file with a partially written replacement).
     * 
     * If WriteToTarget, the target file will be opened directly
     * (necessary when e.g. doing a series of incremental writes to a
     * file while keeping it open for reading).
     */
    enum FileWriteMode {
        WriteToTemporary,
        WriteToTarget
    };

    WavFileWriter(QString path, sv_samplerate_t sampleRate, int channels,
                  FileWriteMode mode);
    virtual ~WavFileWriter();

    bool isOK() const;

    virtual QString getError() const;

    QString getPath() const { return m_path; }

    bool writeModel(DenseTimeValueModel *source,
                    MultiSelection *selection = 0);

    bool writeSamples(float **samples, sv_frame_t count); // count per channel

    bool close();

protected:
    QString m_path;
    sv_samplerate_t m_sampleRate;
    int m_channels;
    TempWriteFile *m_temp;
    SNDFILE *m_file;
    QString m_error;

    QString getWriteFilename() const;
};


#endif