svcore  1.9
WavFileWriter.h
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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
00002 
00003 /*
00004     Sonic Visualiser
00005     An audio file viewer and annotation editor.
00006     Centre for Digital Music, Queen Mary, University of London.
00007     This file copyright 2006 Chris Cannam.
00008     
00009     This program is free software; you can redistribute it and/or
00010     modify it under the terms of the GNU General Public License as
00011     published by the Free Software Foundation; either version 2 of the
00012     License, or (at your option) any later version.  See the file
00013     COPYING included with this distribution for more information.
00014 */
00015 
00016 #ifndef _WAV_FILE_WRITER_H_
00017 #define _WAV_FILE_WRITER_H_
00018 
00019 #include <QString>
00020 
00021 #include <sndfile.h>
00022 
00023 class DenseTimeValueModel;
00024 class MultiSelection;
00025 class TempWriteFile;
00026 
00027 class WavFileWriter
00028 {
00029 public:
00042     enum FileWriteMode {
00043         WriteToTemporary,
00044         WriteToTarget
00045     };
00046 
00047     WavFileWriter(QString path, int sampleRate, int channels,
00048                   FileWriteMode mode);
00049     virtual ~WavFileWriter();
00050 
00051     bool isOK() const;
00052 
00053     virtual QString getError() const;
00054 
00055     QString getPath() const { return m_path; }
00056 
00057     bool writeModel(DenseTimeValueModel *source,
00058                     MultiSelection *selection = 0);
00059 
00060     bool writeSamples(float **samples, int count); // count per channel
00061 
00062     bool close();
00063 
00064 protected:
00065     QString m_path;
00066     int m_sampleRate;
00067     int m_channels;
00068     TempWriteFile *m_temp;
00069     SNDFILE *m_file;
00070     QString m_error;
00071 
00072     QString getWriteFilename() const;
00073 };
00074 
00075 
00076 #endif