annotate data/fileio/WavFileReader.h @ 1517:925d205c39b4 import-audio-data

Handle sample range specification for CSV import
author Chris Cannam
date Sat, 08 Sep 2018 20:43:14 +0100
parents 75d92155fa20
children 954d0cf29ca7
rev   line source
Chris@148 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@148 2
Chris@148 3 /*
Chris@148 4 Sonic Visualiser
Chris@148 5 An audio file viewer and annotation editor.
Chris@148 6 Centre for Digital Music, Queen Mary, University of London.
Chris@148 7 This file copyright 2006 Chris Cannam.
Chris@148 8
Chris@148 9 This program is free software; you can redistribute it and/or
Chris@148 10 modify it under the terms of the GNU General Public License as
Chris@148 11 published by the Free Software Foundation; either version 2 of the
Chris@148 12 License, or (at your option) any later version. See the file
Chris@148 13 COPYING included with this distribution for more information.
Chris@148 14 */
Chris@148 15
Chris@1348 16 #ifndef SV_WAV_FILE_READER_H
Chris@1348 17 #define SV_WAV_FILE_READER_H
Chris@148 18
Chris@148 19 #include "AudioFileReader.h"
Chris@148 20
Chris@1350 21 #ifdef Q_OS_WIN
Chris@1350 22 #include <windows.h>
Chris@1349 23 #define ENABLE_SNDFILE_WINDOWS_PROTOTYPES 1
Chris@1350 24 #endif
Chris@1349 25
Chris@148 26 #include <sndfile.h>
Chris@148 27 #include <QMutex>
Chris@148 28
Chris@157 29 #include <set>
Chris@157 30
Chris@823 31 /**
Chris@823 32 * Reader for audio files using libsndfile.
Chris@823 33 *
Chris@823 34 * This is typically intended for seekable file types that can be read
Chris@823 35 * directly (e.g. WAV, AIFF etc).
Chris@823 36 *
Chris@823 37 * Compressed files supported by libsndfile (e.g. Ogg, FLAC) should
Chris@823 38 * normally be read using DecodingWavFileReader instead (which decodes
Chris@823 39 * to an intermediate cached file).
Chris@823 40 */
Chris@148 41 class WavFileReader : public AudioFileReader
Chris@148 42 {
Chris@148 43 public:
Chris@1513 44 WavFileReader(FileSource source,
Chris@1513 45 bool fileUpdating = false,
Chris@1513 46 bool normalise = false);
Chris@148 47 virtual ~WavFileReader();
Chris@148 48
Chris@345 49 virtual QString getLocation() const { return m_source.getLocation(); }
Chris@290 50 virtual QString getError() const { return m_error; }
Chris@290 51
Chris@1010 52 virtual QString getLocalFilename() const { return m_path; }
Chris@1010 53
Chris@823 54 virtual bool isQuicklySeekable() const { return m_seekable; }
Chris@823 55
Chris@148 56 /**
Chris@148 57 * Must be safe to call from multiple threads with different
Chris@148 58 * arguments on the same object at the same time.
Chris@148 59 */
Chris@1513 60 virtual floatvec_t getInterleavedFrames(sv_frame_t start, sv_frame_t count)
Chris@1513 61 const;
Chris@148 62
Chris@290 63 static void getSupportedExtensions(std::set<QString> &extensions);
Chris@316 64 static bool supportsExtension(QString ext);
Chris@316 65 static bool supportsContentType(QString type);
Chris@317 66 static bool supports(FileSource &source);
Chris@157 67
Chris@265 68 virtual int getDecodeCompletion() const { return 100; }
Chris@265 69
Chris@176 70 bool isUpdating() const { return m_updating; }
Chris@176 71
Chris@175 72 void updateFrameCount();
Chris@176 73 void updateDone();
Chris@175 74
Chris@148 75 protected:
Chris@148 76 SF_INFO m_fileInfo;
Chris@1349 77 SNDFILE *m_file;
Chris@148 78
Chris@317 79 FileSource m_source;
Chris@290 80 QString m_path;
Chris@290 81 QString m_error;
Chris@148 82
Chris@823 83 bool m_seekable;
Chris@823 84
Chris@148 85 mutable QMutex m_mutex;
Chris@1326 86 mutable floatvec_t m_buffer;
Chris@1038 87 mutable sv_frame_t m_lastStart;
Chris@1038 88 mutable sv_frame_t m_lastCount;
Chris@176 89
Chris@1513 90 bool m_normalise;
Chris@1513 91 float m_max;
Chris@1513 92
Chris@176 93 bool m_updating;
Chris@1513 94
Chris@1513 95 floatvec_t getInterleavedFramesUnnormalised(sv_frame_t start,
Chris@1513 96 sv_frame_t count) const;
Chris@1513 97 float getMax() const;
Chris@148 98 };
Chris@148 99
Chris@148 100 #endif