annotate data/model/WaveFileModel.h @ 384:6f6ab834449d spectrogram-cache-rejig

* Merge from trunk
author Chris Cannam
date Wed, 27 Feb 2008 11:59:42 +0000
parents 1afaf98dbf11
children
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@317 23 #include "data/fileio/FileSource.h"
Chris@316 24
Chris@147 25 #include "RangeSummarisableTimeValueModel.h"
Chris@147 26 #include "PowerOfSqrtTwoZoomConstraint.h"
Chris@147 27
Chris@147 28 #include <stdlib.h>
Chris@147 29
Chris@147 30 class AudioFileReader;
Chris@147 31
Chris@179 32 class WaveFileModel : public RangeSummarisableTimeValueModel
Chris@147 33 {
Chris@147 34 Q_OBJECT
Chris@147 35
Chris@147 36 public:
Chris@317 37 WaveFileModel(FileSource source, size_t targetRate = 0);
Chris@317 38 WaveFileModel(FileSource source, AudioFileReader *reader);
Chris@147 39 ~WaveFileModel();
Chris@147 40
Chris@147 41 bool isOK() const;
Chris@147 42 bool isReady(int *) const;
Chris@147 43
Chris@179 44 const ZoomConstraint *getZoomConstraint() const { return &m_zoomConstraint; }
Chris@179 45
Chris@147 46 size_t getFrameCount() const;
Chris@147 47 size_t getChannelCount() const;
Chris@147 48 size_t getSampleRate() const;
Chris@297 49 size_t getNativeRate() const;
Chris@147 50
Chris@333 51 QString getTitle() const;
Chris@333 52 QString getMaker() const;
Chris@384 53 QString getLocation() const;
Chris@333 54
Chris@147 55 virtual Model *clone() const;
Chris@147 56
Chris@147 57 float getValueMinimum() const { return -1.0f; }
Chris@147 58 float getValueMaximum() const { return 1.0f; }
Chris@147 59
Chris@300 60 virtual size_t getStartFrame() const { return m_startFrame; }
Chris@300 61 virtual size_t getEndFrame() const { return m_startFrame + getFrameCount(); }
Chris@147 62
Chris@300 63 void setStartFrame(size_t startFrame) { m_startFrame = startFrame; }
Chris@147 64
Chris@300 65 virtual size_t getData(int channel, size_t start, size_t count,
Chris@300 66 float *buffer) const;
Chris@147 67
Chris@300 68 virtual size_t getData(int channel, size_t start, size_t count,
Chris@300 69 double *buffer) const;
Chris@147 70
Chris@384 71 virtual size_t getData(size_t fromchannel, size_t tochannel,
Chris@384 72 size_t start, size_t count,
Chris@384 73 float **buffers) const;
Chris@384 74
Chris@384 75 virtual size_t getSummaryBlockSize(size_t desired) const;
Chris@384 76
Chris@300 77 virtual void getSummaries(size_t channel, size_t start, size_t count,
Chris@300 78 RangeBlock &ranges,
Chris@300 79 size_t &blockSize) const;
Chris@300 80
Chris@300 81 virtual Range getSummary(size_t channel, size_t start, size_t count) const;
Chris@147 82
Chris@384 83 QString getTypeName() const { return tr("Wave File"); }
Chris@384 84
Chris@163 85 virtual void toXml(QTextStream &out,
Chris@163 86 QString indent = "",
Chris@163 87 QString extraAttributes = "") const;
Chris@163 88
Chris@239 89 signals:
Chris@239 90 void modelChanged();
Chris@258 91 void modelChanged(size_t, size_t);
Chris@239 92 void completionChanged();
Chris@239 93
Chris@147 94 protected slots:
Chris@147 95 void fillTimerTimedOut();
Chris@147 96 void cacheFilled();
Chris@147 97
Chris@147 98 protected:
Chris@147 99 void initialize();
Chris@147 100
Chris@147 101 class RangeCacheFillThread : public Thread
Chris@147 102 {
Chris@147 103 public:
Chris@147 104 RangeCacheFillThread(WaveFileModel &model) :
Chris@175 105 m_model(model), m_fillExtent(0),
Chris@175 106 m_frameCount(model.getFrameCount()) { }
Chris@147 107
Chris@147 108 size_t getFillExtent() const { return m_fillExtent; }
Chris@147 109 virtual void run();
Chris@147 110
Chris@147 111 protected:
Chris@147 112 WaveFileModel &m_model;
Chris@147 113 size_t m_fillExtent;
Chris@175 114 size_t m_frameCount;
Chris@147 115 };
Chris@147 116
Chris@147 117 void fillCache();
Chris@316 118
Chris@317 119 FileSource m_source;
Chris@147 120 QString m_path;
Chris@147 121 AudioFileReader *m_reader;
Chris@175 122 bool m_myReader;
Chris@147 123
Chris@300 124 size_t m_startFrame;
Chris@300 125
Chris@147 126 RangeBlock m_cache[2]; // interleaved at two base resolutions
Chris@147 127 mutable QMutex m_mutex;
Chris@147 128 RangeCacheFillThread *m_fillThread;
Chris@147 129 QTimer *m_updateTimer;
Chris@147 130 size_t m_lastFillExtent;
Chris@147 131 bool m_exiting;
Chris@179 132 static PowerOfSqrtTwoZoomConstraint m_zoomConstraint;
Chris@384 133
Chris@384 134 mutable SampleBlock m_directRead;
Chris@384 135 mutable size_t m_lastDirectReadStart;
Chris@384 136 mutable size_t m_lastDirectReadCount;
Chris@384 137 mutable QMutex m_directReadMutex;
Chris@147 138 };
Chris@147 139
Chris@147 140 #endif