annotate data/model/SparseOneDimensionalModel.h @ 410:9c7ebf2cd956

* Halve space requirements for range (waveform peak) caches
author Chris Cannam
date Fri, 16 May 2008 13:27:07 +0000
parents 5858cc462d0a
children 50a956688baa
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@147 7 This file copyright 2006 Chris Cannam.
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 _SPARSE_ONE_DIMENSIONAL_MODEL_H_
Chris@147 17 #define _SPARSE_ONE_DIMENSIONAL_MODEL_H_
Chris@147 18
Chris@147 19 #include "SparseModel.h"
Chris@150 20 #include "base/PlayParameterRepository.h"
Chris@147 21 #include "base/RealTime.h"
Chris@147 22
Chris@387 23 #include <QStringList>
Chris@387 24
Chris@147 25 struct OneDimensionalPoint
Chris@147 26 {
Chris@147 27 public:
Chris@147 28 OneDimensionalPoint(long _frame) : frame(_frame) { }
Chris@147 29 OneDimensionalPoint(long _frame, QString _label) : frame(_frame), label(_label) { }
Chris@147 30
Chris@147 31 int getDimensions() const { return 1; }
Chris@147 32
Chris@147 33 long frame;
Chris@147 34 QString label;
Chris@338 35
Chris@338 36 QString getLabel() const { return label; }
Chris@338 37
Chris@314 38 void toXml(QTextStream &stream,
Chris@314 39 QString indent = "",
Chris@314 40 QString extraAttributes = "") const
Chris@147 41 {
Chris@314 42 stream << QString("%1<point frame=\"%2\" label=\"%3\" %4/>\n")
Chris@147 43 .arg(indent).arg(frame).arg(label).arg(extraAttributes);
Chris@147 44 }
Chris@147 45
Chris@147 46 QString toDelimitedDataString(QString delimiter, size_t sampleRate) const
Chris@147 47 {
Chris@147 48 QStringList list;
Chris@147 49 list << RealTime::frame2RealTime(frame, sampleRate).toString().c_str();
Chris@318 50 if (label != "") list << label;
Chris@147 51 return list.join(delimiter);
Chris@147 52 }
Chris@147 53
Chris@147 54 struct Comparator {
Chris@147 55 bool operator()(const OneDimensionalPoint &p1,
Chris@147 56 const OneDimensionalPoint &p2) const {
Chris@147 57 if (p1.frame != p2.frame) return p1.frame < p2.frame;
Chris@147 58 return p1.label < p2.label;
Chris@147 59 }
Chris@147 60 };
Chris@147 61
Chris@147 62 struct OrderComparator {
Chris@147 63 bool operator()(const OneDimensionalPoint &p1,
Chris@147 64 const OneDimensionalPoint &p2) const {
Chris@147 65 return p1.frame < p2.frame;
Chris@147 66 }
Chris@147 67 };
Chris@147 68 };
Chris@147 69
Chris@147 70
Chris@147 71 class SparseOneDimensionalModel : public SparseModel<OneDimensionalPoint>
Chris@147 72 {
Chris@147 73 public:
Chris@147 74 SparseOneDimensionalModel(size_t sampleRate, size_t resolution,
Chris@147 75 bool notifyOnAdd = true) :
Chris@147 76 SparseModel<OneDimensionalPoint>(sampleRate, resolution, notifyOnAdd)
Chris@147 77 {
Chris@391 78 PlayParameterRepository::getInstance()->addPlayable(this);
Chris@391 79 }
Chris@391 80
Chris@391 81 virtual ~SparseOneDimensionalModel()
Chris@391 82 {
Chris@391 83 PlayParameterRepository::getInstance()->removePlayable(this);
Chris@391 84 }
Chris@391 85
Chris@391 86 virtual bool canPlay() const { return true; }
Chris@391 87
Chris@391 88 virtual QString getDefaultPlayPluginId() const
Chris@391 89 {
Chris@391 90 return "dssi:_builtin:sample_player";
Chris@391 91 }
Chris@391 92
Chris@391 93 virtual QString getDefaultPlayPluginConfiguration() const
Chris@391 94 {
Chris@391 95 return "<plugin program=\"tap\"/>";
Chris@147 96 }
Chris@147 97
Chris@147 98 int getIndexOf(const Point &point) {
Chris@147 99 // slow
Chris@147 100 int i = 0;
Chris@147 101 Point::Comparator comparator;
Chris@147 102 for (PointList::const_iterator j = m_points.begin();
Chris@147 103 j != m_points.end(); ++j, ++i) {
Chris@147 104 if (!comparator(*j, point) && !comparator(point, *j)) return i;
Chris@147 105 }
Chris@147 106 return -1;
Chris@147 107 }
Chris@345 108
Chris@345 109 QString getTypeName() const { return tr("Sparse 1-D"); }
Chris@147 110 };
Chris@147 111
Chris@147 112 #endif
Chris@147 113
Chris@147 114
Chris@147 115