Mercurial > hg > svcore
view data/fileio/WavFileReader.h @ 1602:08a389e96582 bqaudiostream
Merge
author | Chris Cannam |
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date | Wed, 30 Jan 2019 11:00:54 +0000 |
parents | ce185d4dd408 |
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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 #include "AudioFileReader.h" #ifdef Q_OS_WIN #include <windows.h> #define ENABLE_SNDFILE_WINDOWS_PROTOTYPES 1 #endif #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: 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(); void updateDone(); 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; }; #endif