Chris@148: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@148: 
Chris@148: /*
Chris@148:     Sonic Visualiser
Chris@148:     An audio file viewer and annotation editor.
Chris@148:     Centre for Digital Music, Queen Mary, University of London.
Chris@148:     This file copyright 2006 Chris Cannam.
Chris@148:     
Chris@148:     This program is free software; you can redistribute it and/or
Chris@148:     modify it under the terms of the GNU General Public License as
Chris@148:     published by the Free Software Foundation; either version 2 of the
Chris@148:     License, or (at your option) any later version.  See the file
Chris@148:     COPYING included with this distribution for more information.
Chris@148: */
Chris@148: 
Chris@1348: #ifndef SV_WAV_FILE_READER_H
Chris@1348: #define SV_WAV_FILE_READER_H
Chris@148: 
Chris@148: #include "AudioFileReader.h"
Chris@148: 
Chris@1350: #ifdef Q_OS_WIN
Chris@1350: #include <windows.h>
Chris@1349: #define ENABLE_SNDFILE_WINDOWS_PROTOTYPES 1
Chris@1350: #endif
Chris@1349: 
Chris@148: #include <sndfile.h>
Chris@148: #include <QMutex>
Chris@148: 
Chris@157: #include <set>
Chris@157: 
Chris@823: /**
Chris@823:  * Reader for audio files using libsndfile.
Chris@823:  *
Chris@823:  * This is typically intended for seekable file types that can be read
Chris@823:  * directly (e.g. WAV, AIFF etc).
Chris@823:  *
Chris@823:  * Compressed files supported by libsndfile (e.g. Ogg, FLAC) should
Chris@823:  * normally be read using DecodingWavFileReader instead (which decodes
Chris@823:  * to an intermediate cached file).
Chris@823:  */
Chris@148: class WavFileReader : public AudioFileReader
Chris@148: {
Chris@148: public:
Chris@1520:     enum class Normalisation { None, Peak };
Chris@1520: 
Chris@1513:     WavFileReader(FileSource source,
Chris@1513:                   bool fileUpdating = false,
Chris@1520:                   Normalisation normalise = Normalisation::None);
Chris@148:     virtual ~WavFileReader();
Chris@148: 
Chris@345:     virtual QString getLocation() const { return m_source.getLocation(); }
Chris@290:     virtual QString getError() const { return m_error; }
Chris@290: 
Chris@1010:     virtual QString getLocalFilename() const { return m_path; }
Chris@1010:     
Chris@823:     virtual bool isQuicklySeekable() const { return m_seekable; }
Chris@823:     
Chris@148:     /** 
Chris@148:      * Must be safe to call from multiple threads with different
Chris@148:      * arguments on the same object at the same time.
Chris@148:      */
Chris@1513:     virtual floatvec_t getInterleavedFrames(sv_frame_t start, sv_frame_t count)
Chris@1513:         const;
Chris@148:     
Chris@290:     static void getSupportedExtensions(std::set<QString> &extensions);
Chris@316:     static bool supportsExtension(QString ext);
Chris@316:     static bool supportsContentType(QString type);
Chris@317:     static bool supports(FileSource &source);
Chris@157: 
Chris@265:     virtual int getDecodeCompletion() const { return 100; }
Chris@265: 
Chris@176:     bool isUpdating() const { return m_updating; }
Chris@176: 
Chris@175:     void updateFrameCount();
Chris@176:     void updateDone();
Chris@175: 
Chris@148: protected:
Chris@148:     SF_INFO m_fileInfo;
Chris@1349:     SNDFILE *m_file;
Chris@148: 
Chris@317:     FileSource m_source;
Chris@290:     QString m_path;
Chris@290:     QString m_error;
Chris@148: 
Chris@823:     bool m_seekable;
Chris@823: 
Chris@148:     mutable QMutex m_mutex;
Chris@1326:     mutable floatvec_t m_buffer;
Chris@1038:     mutable sv_frame_t m_lastStart;
Chris@1038:     mutable sv_frame_t m_lastCount;
Chris@176: 
Chris@1520:     Normalisation m_normalisation;
Chris@1513:     float m_max;
Chris@1513: 
Chris@176:     bool m_updating;
Chris@1513: 
Chris@1513:     floatvec_t getInterleavedFramesUnnormalised(sv_frame_t start,
Chris@1513:                                                 sv_frame_t count) const;
Chris@1513:     float getMax() const;
Chris@148: };
Chris@148: 
Chris@148: #endif