annotate data/model/Dense3DModelPeakCache.cpp @ 1406:09751743647e

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author Chris Cannam
date Tue, 07 Mar 2017 13:52:37 +0000
parents 368449629a30
children 48e9f538e6e9
rev   line source
Chris@545 1 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
Chris@545 2
Chris@545 3 /*
Chris@545 4 Sonic Visualiser
Chris@545 5 An audio file viewer and annotation editor.
Chris@545 6 Centre for Digital Music, Queen Mary, University of London.
Chris@545 7 This file copyright 2009 QMUL.
Chris@545 8
Chris@545 9 This program is free software; you can redistribute it and/or
Chris@545 10 modify it under the terms of the GNU General Public License as
Chris@545 11 published by the Free Software Foundation; either version 2 of the
Chris@545 12 License, or (at your option) any later version. See the file
Chris@545 13 COPYING included with this distribution for more information.
Chris@545 14 */
Chris@545 15
Chris@545 16 #include "Dense3DModelPeakCache.h"
Chris@545 17
Chris@551 18 #include "base/Profiler.h"
Chris@551 19
Chris@1340 20 #include "base/HitCount.h"
Chris@1340 21
Chris@1191 22 Dense3DModelPeakCache::Dense3DModelPeakCache(const DenseThreeDimensionalModel *source,
Chris@929 23 int columnsPerPeak) :
Chris@545 24 m_source(source),
Chris@1190 25 m_columnsPerPeak(columnsPerPeak)
Chris@545 26 {
Chris@545 27 m_cache = new EditableDenseThreeDimensionalModel
Chris@545 28 (source->getSampleRate(),
Chris@545 29 getResolution(),
Chris@545 30 source->getHeight(),
Chris@545 31 EditableDenseThreeDimensionalModel::NoCompression,
Chris@545 32 false);
Chris@545 33
Chris@545 34 connect(source, SIGNAL(modelChanged()),
Chris@545 35 this, SLOT(sourceModelChanged()));
Chris@546 36 connect(source, SIGNAL(aboutToBeDeleted()),
Chris@545 37 this, SLOT(sourceModelAboutToBeDeleted()));
Chris@545 38 }
Chris@545 39
Chris@545 40 Dense3DModelPeakCache::~Dense3DModelPeakCache()
Chris@545 41 {
Chris@1384 42 if (m_cache) m_cache->aboutToDelete();
Chris@545 43 delete m_cache;
Chris@545 44 }
Chris@545 45
Chris@545 46 Dense3DModelPeakCache::Column
Chris@929 47 Dense3DModelPeakCache::getColumn(int column) const
Chris@545 48 {
Chris@545 49 if (!m_source) return Column();
Chris@545 50 if (!haveColumn(column)) fillColumn(column);
Chris@545 51 return m_cache->getColumn(column);
Chris@545 52 }
Chris@545 53
Chris@545 54 float
Chris@929 55 Dense3DModelPeakCache::getValueAt(int column, int n) const
Chris@545 56 {
Chris@545 57 if (!m_source) return 0.f;
Chris@545 58 if (!haveColumn(column)) fillColumn(column);
Chris@545 59 return m_cache->getValueAt(column, n);
Chris@545 60 }
Chris@545 61
Chris@545 62 void
Chris@545 63 Dense3DModelPeakCache::sourceModelChanged()
Chris@545 64 {
Chris@545 65 if (!m_source) return;
Chris@546 66 if (m_coverage.size() > 0) {
Chris@546 67 // The last peak may have come from an incomplete read, which
Chris@546 68 // may since have been filled, so reset it
Chris@1153 69 m_coverage[m_coverage.size()-1] = false;
Chris@546 70 }
Chris@1153 71 m_coverage.resize(getWidth(), false); // retaining data
Chris@545 72 }
Chris@545 73
Chris@545 74 void
Chris@545 75 Dense3DModelPeakCache::sourceModelAboutToBeDeleted()
Chris@545 76 {
Chris@545 77 m_source = 0;
Chris@545 78 }
Chris@545 79
Chris@545 80 bool
Chris@929 81 Dense3DModelPeakCache::haveColumn(int column) const
Chris@545 82 {
Chris@1340 83 static HitCount count("Dense3DModelPeakCache");
Chris@1340 84 if (in_range_for(m_coverage, column) && m_coverage[column]) {
Chris@1340 85 count.hit();
Chris@1340 86 return true;
Chris@1340 87 } else {
Chris@1340 88 count.miss();
Chris@1340 89 return false;
Chris@1340 90 }
Chris@545 91 }
Chris@545 92
Chris@545 93 void
Chris@929 94 Dense3DModelPeakCache::fillColumn(int column) const
Chris@545 95 {
Chris@551 96 Profiler profiler("Dense3DModelPeakCache::fillColumn");
Chris@551 97
Chris@1153 98 if (!in_range_for(m_coverage, column)) {
Chris@1192 99 if (m_coverage.size() > 0) {
Chris@1192 100 // The last peak may have come from an incomplete read, which
Chris@1192 101 // may since have been filled, so reset it
Chris@1192 102 m_coverage[m_coverage.size()-1] = false;
Chris@1192 103 }
Chris@1153 104 m_coverage.resize(column + 1, false);
Chris@551 105 }
Chris@546 106
Chris@1192 107 int sourceWidth = m_source->getWidth();
Chris@1192 108
Chris@545 109 Column peak;
Chris@1156 110 int n = 0;
Chris@1190 111 for (int i = 0; i < m_columnsPerPeak; ++i) {
Chris@1192 112
Chris@1192 113 int sourceColumn = column * m_columnsPerPeak + i;
Chris@1192 114 if (sourceColumn >= sourceWidth) break;
Chris@1192 115
Chris@1192 116 Column here = m_source->getColumn(sourceColumn);
Chris@1192 117
Chris@1192 118 // cerr << "Dense3DModelPeakCache::fillColumn(" << column << "): source col "
Chris@1192 119 // << sourceColumn << " of " << sourceWidth
Chris@1192 120 // << " returned " << here.size() << " elts" << endl;
Chris@1192 121
Chris@545 122 if (i == 0) {
Chris@545 123 peak = here;
Chris@1156 124 n = int(peak.size());
Chris@545 125 } else {
Chris@1156 126 int m = std::min(n, int(here.size()));
Chris@1156 127 for (int j = 0; j < m; ++j) {
Chris@1156 128 peak[j] = std::max(here[j], peak[j]);
Chris@545 129 }
Chris@545 130 }
Chris@545 131 }
Chris@546 132
Chris@545 133 m_cache->setColumn(column, peak);
Chris@1153 134 m_coverage[column] = true;
Chris@545 135 }
Chris@545 136
Chris@545 137