annotate data/fileio/CodedAudioFileReader.h @ 1119:e22bfe8ca248 tonioni

fixes the problem that the last note was not exported to csv
author Matthias Mauch <mail@matthiasmauch.net>
date Fri, 14 Aug 2015 18:16:14 +0100
parents 843f67be0ed9
children 4d9816ba0ebe
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@148 16 #ifndef _CODED_AUDIO_FILE_READER_H_
Chris@148 17 #define _CODED_AUDIO_FILE_READER_H_
Chris@148 18
Chris@148 19 #include "AudioFileReader.h"
Chris@148 20
Chris@148 21 #include <sndfile.h>
Chris@263 22 #include <QMutex>
Chris@543 23 #include <QReadWriteLock>
Chris@148 24
Chris@148 25 class WavFileReader;
Chris@297 26 class Serialiser;
Chris@297 27 class Resampler;
Chris@148 28
Chris@148 29 class CodedAudioFileReader : public AudioFileReader
Chris@148 30 {
Chris@357 31 Q_OBJECT
Chris@357 32
Chris@148 33 public:
Chris@148 34 virtual ~CodedAudioFileReader();
Chris@148 35
Chris@148 36 enum CacheMode {
Chris@148 37 CacheInTemporaryFile,
Chris@148 38 CacheInMemory
Chris@148 39 };
Chris@148 40
Chris@1041 41 virtual SampleBlock getInterleavedFrames(sv_frame_t start, sv_frame_t count) const;
Chris@148 42
Chris@1040 43 virtual sv_samplerate_t getNativeRate() const { return m_fileRate; }
Chris@297 44
Chris@1010 45 virtual QString getLocalFilename() const { return m_cacheFileName; }
Chris@1010 46
Chris@823 47 /// Intermediate cache means all CodedAudioFileReaders are quickly seekable
Chris@823 48 virtual bool isQuicklySeekable() const { return true; }
Chris@823 49
Chris@357 50 signals:
Chris@357 51 void progress(int);
Chris@357 52
Chris@148 53 protected:
Chris@933 54 CodedAudioFileReader(CacheMode cacheMode,
Chris@1040 55 sv_samplerate_t targetRate,
Chris@920 56 bool normalised);
Chris@148 57
Chris@148 58 void initialiseDecodeCache(); // samplerate, channels must have been set
Chris@544 59
Chris@544 60 // may throw InsufficientDiscSpace:
Chris@1038 61 void addSamplesToDecodeCache(float **samples, sv_frame_t nframes);
Chris@1038 62 void addSamplesToDecodeCache(float *samplesInterleaved, sv_frame_t nframes);
Chris@297 63 void addSamplesToDecodeCache(const SampleBlock &interleaved);
Chris@544 64
Chris@544 65 // may throw InsufficientDiscSpace:
Chris@148 66 void finishDecodeCache();
Chris@544 67
Chris@148 68 bool isDecodeCacheInitialised() const { return m_initialised; }
Chris@148 69
Chris@297 70 void startSerialised(QString id);
Chris@297 71 void endSerialised();
Chris@297 72
Chris@297 73 private:
Chris@1038 74 void pushBuffer(float *interleaved, sv_frame_t sz, bool final);
Chris@1038 75 void pushBufferResampling(float *interleaved, sv_frame_t sz, double ratio, bool final);
Chris@1038 76 void pushBufferNonResampling(float *interleaved, sv_frame_t sz);
Chris@297 77
Chris@297 78 protected:
Chris@263 79 QMutex m_cacheMutex;
Chris@148 80 CacheMode m_cacheMode;
Chris@148 81 SampleBlock m_data;
Chris@543 82 mutable QReadWriteLock m_dataLock;
Chris@148 83 bool m_initialised;
Chris@297 84 Serialiser *m_serialiser;
Chris@1040 85 sv_samplerate_t m_fileRate;
Chris@148 86
Chris@290 87 QString m_cacheFileName;
Chris@148 88 SNDFILE *m_cacheFileWritePtr;
Chris@148 89 WavFileReader *m_cacheFileReader;
Chris@148 90 float *m_cacheWriteBuffer;
Chris@1038 91 sv_frame_t m_cacheWriteBufferIndex;
Chris@1038 92 sv_frame_t m_cacheWriteBufferSize; // frames
Chris@297 93
Chris@297 94 Resampler *m_resampler;
Chris@297 95 float *m_resampleBuffer;
Chris@1038 96 sv_frame_t m_fileFrameCount;
Chris@920 97
Chris@920 98 bool m_normalised;
Chris@920 99 float m_max;
Chris@920 100 float m_gain;
Chris@148 101 };
Chris@148 102
Chris@148 103 #endif