annotate data/model/WaveFileModel.h @ 1091:bdebff3265ae simple-fft-model

Simplest naive FFTModel implementation (+ fill in tests)
author Chris Cannam
date Fri, 12 Jun 2015 18:08:57 +0100
parents 9f4505ac9072
children 4d9816ba0ebe b9faee02afa5
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@1040 37 WaveFileModel(FileSource source, sv_samplerate_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@1038 46 sv_frame_t getFrameCount() const;
Chris@929 47 int getChannelCount() const;
Chris@1040 48 sv_samplerate_t getSampleRate() const;
Chris@1040 49 sv_samplerate_t getNativeRate() const;
Chris@147 50
Chris@333 51 QString getTitle() const;
Chris@333 52 QString getMaker() const;
Chris@345 53 QString getLocation() const;
Chris@333 54
Chris@1010 55 QString getLocalFilename() const;
Chris@1010 56
Chris@147 57 float getValueMinimum() const { return -1.0f; }
Chris@147 58 float getValueMaximum() const { return 1.0f; }
Chris@147 59
Chris@1038 60 virtual sv_frame_t getStartFrame() const { return m_startFrame; }
Chris@1038 61 virtual sv_frame_t getEndFrame() const { return m_startFrame + getFrameCount(); }
Chris@147 62
Chris@1038 63 void setStartFrame(sv_frame_t startFrame) { m_startFrame = startFrame; }
Chris@147 64
Chris@1038 65 virtual sv_frame_t getData(int channel, sv_frame_t start, sv_frame_t count,
Chris@1086 66 float *buffer) const;
Chris@147 67
Chris@1086 68 virtual sv_frame_t getMultiChannelData(int fromchannel, int tochannel,
Chris@1086 69 sv_frame_t start, sv_frame_t count,
Chris@1086 70 float **buffers) const;
Chris@363 71
Chris@929 72 virtual int getSummaryBlockSize(int desired) const;
Chris@377 73
Chris@1038 74 virtual void getSummaries(int channel, sv_frame_t start, sv_frame_t count,
Chris@300 75 RangeBlock &ranges,
Chris@929 76 int &blockSize) const;
Chris@300 77
Chris@1038 78 virtual Range getSummary(int channel, sv_frame_t start, sv_frame_t count) const;
Chris@147 79
Chris@345 80 QString getTypeName() const { return tr("Wave File"); }
Chris@345 81
Chris@163 82 virtual void toXml(QTextStream &out,
Chris@163 83 QString indent = "",
Chris@163 84 QString extraAttributes = "") const;
Chris@163 85
Chris@147 86 protected slots:
Chris@147 87 void fillTimerTimedOut();
Chris@147 88 void cacheFilled();
Chris@147 89
Chris@147 90 protected:
Chris@147 91 void initialize();
Chris@147 92
Chris@147 93 class RangeCacheFillThread : public Thread
Chris@147 94 {
Chris@147 95 public:
Chris@147 96 RangeCacheFillThread(WaveFileModel &model) :
Chris@175 97 m_model(model), m_fillExtent(0),
Chris@175 98 m_frameCount(model.getFrameCount()) { }
Chris@147 99
Chris@1038 100 sv_frame_t getFillExtent() const { return m_fillExtent; }
Chris@147 101 virtual void run();
Chris@147 102
Chris@147 103 protected:
Chris@147 104 WaveFileModel &m_model;
Chris@1038 105 sv_frame_t m_fillExtent;
Chris@1038 106 sv_frame_t m_frameCount;
Chris@147 107 };
Chris@147 108
Chris@147 109 void fillCache();
Chris@316 110
Chris@317 111 FileSource m_source;
Chris@147 112 QString m_path;
Chris@147 113 AudioFileReader *m_reader;
Chris@175 114 bool m_myReader;
Chris@147 115
Chris@1038 116 sv_frame_t m_startFrame;
Chris@300 117
Chris@147 118 RangeBlock m_cache[2]; // interleaved at two base resolutions
Chris@147 119 mutable QMutex m_mutex;
Chris@147 120 RangeCacheFillThread *m_fillThread;
Chris@147 121 QTimer *m_updateTimer;
Chris@1038 122 sv_frame_t m_lastFillExtent;
Chris@147 123 bool m_exiting;
Chris@179 124 static PowerOfSqrtTwoZoomConstraint m_zoomConstraint;
Chris@377 125
Chris@377 126 mutable SampleBlock m_directRead;
Chris@1038 127 mutable sv_frame_t m_lastDirectReadStart;
Chris@1038 128 mutable sv_frame_t m_lastDirectReadCount;
Chris@377 129 mutable QMutex m_directReadMutex;
Chris@147 130 };
Chris@147 131
Chris@147 132 #endif