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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 2007 QMUL.
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_DECODING_WAV_FILE_READER_H
#define SV_DECODING_WAV_FILE_READER_H
// We build DecodingWavFileReader only with libsndfile enabled. That's
// because (a) it's only used (by AudioFileReaderFactory) when
// libsndfile is enabled, and (b) it uses a [libsndfile] WavFileReader
// as its source and we don't want to switch that to a generic
// AudioFileReader because we'd need further logic to make sure
// AudioFileReaderFactory never implemented it using a
// DecodingWavFileReader, giving us infinite recursion
#ifndef WITHOUT_LIBSNDFILE
#include "CodedAudioFileReader.h"
#include "base/Thread.h"
#include <set>
#include <atomic>
namespace sv {
class WavFileReader;
class ProgressReporter;
class DecodingWavFileReader : public CodedAudioFileReader
{
Q_OBJECT
public:
DecodingWavFileReader(FileSource source,
DecodeMode decodeMode, // determines when to resample
CacheMode cacheMode,
sv_samplerate_t targetRate = 0,
bool normalised = false,
ProgressReporter *reporter = 0);
virtual ~DecodingWavFileReader();
QString getTitle() const override { return m_title; }
QString getMaker() const override { return m_maker; }
QString getError() const override { return m_error; }
QString getLocation() const override { return m_source.getLocation(); }
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 m_completion; }
bool isUpdating() const override {
return m_decodeThread && m_decodeThread->isRunning();
}
public slots:
void cancelled();
protected:
FileSource m_source;
QString m_title;
QString m_maker;
QString m_path;
QString m_error;
std::atomic<bool> m_cancelled;
sv_frame_t m_processed;
int m_completion;
WavFileReader *m_original;
ProgressReporter *m_reporter;
void addBlock(const floatvec_t &frames);
class DecodeThread : public Thread
{
public:
DecodeThread(DecodingWavFileReader *reader) : m_reader(reader) { }
void run() override;
protected:
DecodingWavFileReader *m_reader;
};
DecodeThread *m_decodeThread;
};
} // end namespace sv
#endif // !WITHOUT_LIBSNDFILE
#endif
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