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/* -*- 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_READER_H_
#define _WAV_FILE_READER_H_
#include "AudioFileReader.h"
#include <sndfile.h>
#include <QMutex>
#include <set>
/**
* Reader for audio files using libsndfile.
*
* This is typically intended for seekable file types that can be read
* directly (e.g. WAV, AIFF etc).
*
* Compressed files supported by libsndfile (e.g. Ogg, FLAC) should
* normally be read using DecodingWavFileReader instead (which decodes
* to an intermediate cached file).
*/
class WavFileReader : public AudioFileReader
{
public:
WavFileReader(FileSource source, bool fileUpdating = false);
virtual ~WavFileReader();
virtual QString getLocation() const { return m_source.getLocation(); }
virtual QString getError() const { return m_error; }
virtual QString getLocalFilename() const { return m_path; }
virtual bool isQuicklySeekable() const { return m_seekable; }
/**
* Must be safe to call from multiple threads with different
* arguments on the same object at the same time.
*/
virtual SampleBlock getInterleavedFrames(sv_frame_t start, sv_frame_t count) const;
static void getSupportedExtensions(std::set<QString> &extensions);
static bool supportsExtension(QString ext);
static bool supportsContentType(QString type);
static bool supports(FileSource &source);
virtual int getDecodeCompletion() const { return 100; }
bool isUpdating() const { return m_updating; }
void updateFrameCount();
void updateDone();
protected:
SF_INFO m_fileInfo;
SNDFILE *m_file;
FileSource m_source;
QString m_path;
QString m_error;
bool m_seekable;
mutable QMutex m_mutex;
mutable SampleBlock m_buffer;
mutable sv_frame_t m_bufsiz;
mutable sv_frame_t m_lastStart;
mutable sv_frame_t m_lastCount;
bool m_updating;
};
#endif
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