annotate data/model/WaveFileModel.h @ 266:2268963dabd1

* FFT: fix invalid write of normalisation factor in compact mode of disc cache * FFT: fix range problem for normalisation factor in compact mode (it was stored as an unsigned scaled from an assumed float range of 0->1, which is not very plausible and not accurate enough even if true -- use a float instead) * Spectrogram: fix vertical zoom behaviour for log frequency spectrograms: make the thing in the middle of the display remain in the middle after zoom * Overview widget: don't update the detailed waveform if still decoding the audio file (too expensive to do all those redraws)
author Chris Cannam
date Fri, 08 Jun 2007 15:19:50 +0000
parents 96a6dd889c68
children 7b96b3bd4bae
rev   line source
Chris@147 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@147 2
Chris@147 3 /*
Chris@147 4 Sonic Visualiser
Chris@147 5 An audio file viewer and annotation editor.
Chris@147 6 Centre for Digital Music, Queen Mary, University of London.
Chris@202 7 This file copyright 2006 Chris Cannam and QMUL.
Chris@147 8
Chris@147 9 This program is free software; you can redistribute it and/or
Chris@147 10 modify it under the terms of the GNU General Public License as
Chris@147 11 published by the Free Software Foundation; either version 2 of the
Chris@147 12 License, or (at your option) any later version. See the file
Chris@147 13 COPYING included with this distribution for more information.
Chris@147 14 */
Chris@147 15
Chris@147 16 #ifndef _WAVE_FILE_MODEL_H_
Chris@147 17 #define _WAVE_FILE_MODEL_H_
Chris@147 18
Chris@150 19 #include "base/Thread.h"
Chris@147 20 #include <QMutex>
Chris@147 21 #include <QTimer>
Chris@147 22
Chris@147 23 #include "RangeSummarisableTimeValueModel.h"
Chris@147 24 #include "PowerOfSqrtTwoZoomConstraint.h"
Chris@147 25
Chris@147 26 #include <stdlib.h>
Chris@147 27
Chris@147 28 class AudioFileReader;
Chris@147 29
Chris@179 30 class WaveFileModel : public RangeSummarisableTimeValueModel
Chris@147 31 {
Chris@147 32 Q_OBJECT
Chris@147 33
Chris@147 34 public:
Chris@147 35 WaveFileModel(QString path);
Chris@211 36 WaveFileModel(QString path, QString originalLocation);
Chris@211 37 WaveFileModel(QString originalLocation, AudioFileReader *reader);
Chris@147 38 ~WaveFileModel();
Chris@147 39
Chris@147 40 bool isOK() const;
Chris@147 41 bool isReady(int *) const;
Chris@147 42
Chris@179 43 const ZoomConstraint *getZoomConstraint() const { return &m_zoomConstraint; }
Chris@179 44
Chris@147 45 size_t getFrameCount() const;
Chris@147 46 size_t getChannelCount() const;
Chris@147 47 size_t getSampleRate() const;
Chris@147 48
Chris@147 49 virtual Model *clone() const;
Chris@147 50
Chris@147 51 float getValueMinimum() const { return -1.0f; }
Chris@147 52 float getValueMaximum() const { return 1.0f; }
Chris@147 53
Chris@147 54 virtual size_t getStartFrame() const { return 0; }
Chris@147 55 virtual size_t getEndFrame() const { return getFrameCount(); }
Chris@147 56
Chris@147 57 virtual size_t getValues(int channel, size_t start, size_t end,
Chris@147 58 float *buffer) const;
Chris@147 59
Chris@147 60 virtual size_t getValues(int channel, size_t start, size_t end,
Chris@147 61 double *buffer) const;
Chris@147 62
Chris@225 63 virtual void getRanges(size_t channel, size_t start, size_t end,
Chris@225 64 RangeBlock &ranges,
Chris@225 65 size_t &blockSize) const;
Chris@147 66
Chris@147 67 virtual Range getRange(size_t channel, size_t start, size_t end) const;
Chris@147 68
Chris@163 69 virtual void toXml(QTextStream &out,
Chris@163 70 QString indent = "",
Chris@163 71 QString extraAttributes = "") const;
Chris@163 72
Chris@147 73 virtual QString toXmlString(QString indent = "",
Chris@147 74 QString extraAttributes = "") const;
Chris@147 75
Chris@239 76 signals:
Chris@239 77 void modelChanged();
Chris@258 78 void modelChanged(size_t, size_t);
Chris@239 79 void completionChanged();
Chris@239 80
Chris@147 81 protected slots:
Chris@147 82 void fillTimerTimedOut();
Chris@147 83 void cacheFilled();
Chris@147 84
Chris@147 85 protected:
Chris@147 86 void initialize();
Chris@147 87
Chris@147 88 class RangeCacheFillThread : public Thread
Chris@147 89 {
Chris@147 90 public:
Chris@147 91 RangeCacheFillThread(WaveFileModel &model) :
Chris@175 92 m_model(model), m_fillExtent(0),
Chris@175 93 m_frameCount(model.getFrameCount()) { }
Chris@147 94
Chris@147 95 size_t getFillExtent() const { return m_fillExtent; }
Chris@147 96 virtual void run();
Chris@147 97
Chris@147 98 protected:
Chris@147 99 WaveFileModel &m_model;
Chris@147 100 size_t m_fillExtent;
Chris@175 101 size_t m_frameCount;
Chris@147 102 };
Chris@147 103
Chris@147 104 void fillCache();
Chris@147 105
Chris@147 106 QString m_path;
Chris@147 107 AudioFileReader *m_reader;
Chris@175 108 bool m_myReader;
Chris@147 109
Chris@147 110 RangeBlock m_cache[2]; // interleaved at two base resolutions
Chris@147 111 mutable QMutex m_mutex;
Chris@147 112 RangeCacheFillThread *m_fillThread;
Chris@147 113 QTimer *m_updateTimer;
Chris@147 114 size_t m_lastFillExtent;
Chris@147 115 bool m_exiting;
Chris@179 116 static PowerOfSqrtTwoZoomConstraint m_zoomConstraint;
Chris@147 117 };
Chris@147 118
Chris@147 119 #endif