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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 SV_WAV_FILE_READER_H
#define SV_WAV_FILE_READER_H
// Most library support is included only with a HAVE_ flag, but this
// reader which uses libsndfile directly is different: we won't skip
// it without a more explicit direction. That's because in some places
// we rely on capabilities it has (e.g. peak chunks, w64 float
// support) that another wav file reader might not, and it's the only
// reader we support for direct seeking, so we don't want to lose it
// by accident. But we do want to allow builds without libsndfile,
// e.g. for embedded scenarios where we usually aren't reading the
// audio ourselves.
//
#ifndef WITHOUT_LIBSNDFILE
#include "AudioFileReader.h"
#ifdef Q_OS_WIN
#include <windows.h>
#define ENABLE_SNDFILE_WINDOWS_PROTOTYPES 1
#endif
#include <sndfile.h>
#include <QMutex>
#include <set>
namespace sv {
/**
* 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:
enum class Normalisation { None, Peak };
WavFileReader(FileSource source,
bool fileUpdating = false,
Normalisation normalise = Normalisation::None);
virtual ~WavFileReader();
QString getLocation() const override { return m_source.getLocation(); }
QString getError() const override { return m_error; }
QString getTitle() const override { return m_title; }
QString getMaker() const override { return m_maker; }
QString getLocalFilename() const override { return m_path; }
bool isQuicklySeekable() const override { return m_seekable; }
/**
* Must be safe to call from multiple threads with different
* arguments on the same object at the same time.
*/
floatvec_t getInterleavedFrames(sv_frame_t start, sv_frame_t count) const override;
static void getSupportedExtensions(std::set<QString> &extensions);
static bool supportsExtension(QString ext);
static bool supportsContentType(QString type);
static bool supports(FileSource &source);
int getDecodeCompletion() const override { return 100; }
bool isUpdating() const override { return m_updating; }
void updateFrameCount() override;
void updateDone() override;
protected:
SF_INFO m_fileInfo;
SNDFILE *m_file;
FileSource m_source;
QString m_path;
QString m_error;
QString m_title;
QString m_maker;
bool m_seekable;
mutable QMutex m_mutex;
mutable floatvec_t m_buffer;
mutable sv_frame_t m_lastStart;
mutable sv_frame_t m_lastCount;
Normalisation m_normalisation;
float m_max;
bool m_updating;
floatvec_t getInterleavedFramesUnnormalised(sv_frame_t start,
sv_frame_t count) const;
float getMax() const;
};
} // end namespace sv
#endif // !WITHOUT_LIBSNDFILE
#endif
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