annotate data/model/Dense3DModelPeakCache.cpp @ 1213:8dc7ab20e847 piper

Restore plugin categories
author Chris Cannam
date Mon, 17 Oct 2016 14:55:05 +0100
parents 9884efa1f88a
children f5f83fb49852
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@1191 20 Dense3DModelPeakCache::Dense3DModelPeakCache(const DenseThreeDimensionalModel *source,
Chris@929 21 int columnsPerPeak) :
Chris@545 22 m_source(source),
Chris@1190 23 m_columnsPerPeak(columnsPerPeak)
Chris@545 24 {
Chris@545 25 m_cache = new EditableDenseThreeDimensionalModel
Chris@545 26 (source->getSampleRate(),
Chris@545 27 getResolution(),
Chris@545 28 source->getHeight(),
Chris@545 29 EditableDenseThreeDimensionalModel::NoCompression,
Chris@545 30 false);
Chris@545 31
Chris@545 32 connect(source, SIGNAL(modelChanged()),
Chris@545 33 this, SLOT(sourceModelChanged()));
Chris@546 34 connect(source, SIGNAL(aboutToBeDeleted()),
Chris@545 35 this, SLOT(sourceModelAboutToBeDeleted()));
Chris@545 36
Chris@545 37 }
Chris@545 38
Chris@545 39 Dense3DModelPeakCache::~Dense3DModelPeakCache()
Chris@545 40 {
Chris@545 41 delete m_cache;
Chris@545 42 }
Chris@545 43
Chris@545 44 Dense3DModelPeakCache::Column
Chris@929 45 Dense3DModelPeakCache::getColumn(int column) const
Chris@545 46 {
Chris@551 47 Profiler profiler("Dense3DModelPeakCache::getColumn");
Chris@545 48 if (!m_source) return Column();
Chris@545 49 if (!haveColumn(column)) fillColumn(column);
Chris@545 50 return m_cache->getColumn(column);
Chris@545 51 }
Chris@545 52
Chris@545 53 float
Chris@929 54 Dense3DModelPeakCache::getValueAt(int column, int n) const
Chris@545 55 {
Chris@545 56 if (!m_source) return 0.f;
Chris@545 57 if (!haveColumn(column)) fillColumn(column);
Chris@545 58 return m_cache->getValueAt(column, n);
Chris@545 59 }
Chris@545 60
Chris@545 61 void
Chris@545 62 Dense3DModelPeakCache::sourceModelChanged()
Chris@545 63 {
Chris@545 64 if (!m_source) return;
Chris@546 65 if (m_coverage.size() > 0) {
Chris@546 66 // The last peak may have come from an incomplete read, which
Chris@546 67 // may since have been filled, so reset it
Chris@1153 68 m_coverage[m_coverage.size()-1] = false;
Chris@546 69 }
Chris@1153 70 m_coverage.resize(getWidth(), false); // retaining data
Chris@545 71 }
Chris@545 72
Chris@545 73 void
Chris@545 74 Dense3DModelPeakCache::sourceModelAboutToBeDeleted()
Chris@545 75 {
Chris@545 76 m_source = 0;
Chris@545 77 }
Chris@545 78
Chris@545 79 bool
Chris@929 80 Dense3DModelPeakCache::haveColumn(int column) const
Chris@545 81 {
Chris@1153 82 return in_range_for(m_coverage, column) && m_coverage[column];
Chris@545 83 }
Chris@545 84
Chris@545 85 void
Chris@929 86 Dense3DModelPeakCache::fillColumn(int column) const
Chris@545 87 {
Chris@551 88 Profiler profiler("Dense3DModelPeakCache::fillColumn");
Chris@551 89
Chris@1153 90 if (!in_range_for(m_coverage, column)) {
Chris@1192 91 if (m_coverage.size() > 0) {
Chris@1192 92 // The last peak may have come from an incomplete read, which
Chris@1192 93 // may since have been filled, so reset it
Chris@1192 94 m_coverage[m_coverage.size()-1] = false;
Chris@1192 95 }
Chris@1153 96 m_coverage.resize(column + 1, false);
Chris@551 97 }
Chris@546 98
Chris@1192 99 int sourceWidth = m_source->getWidth();
Chris@1192 100
Chris@545 101 Column peak;
Chris@1156 102 int n = 0;
Chris@1190 103 for (int i = 0; i < m_columnsPerPeak; ++i) {
Chris@1192 104
Chris@1192 105 int sourceColumn = column * m_columnsPerPeak + i;
Chris@1192 106 if (sourceColumn >= sourceWidth) break;
Chris@1192 107
Chris@1192 108 Column here = m_source->getColumn(sourceColumn);
Chris@1192 109
Chris@1192 110 // cerr << "Dense3DModelPeakCache::fillColumn(" << column << "): source col "
Chris@1192 111 // << sourceColumn << " of " << sourceWidth
Chris@1192 112 // << " returned " << here.size() << " elts" << endl;
Chris@1192 113
Chris@545 114 if (i == 0) {
Chris@545 115 peak = here;
Chris@1156 116 n = int(peak.size());
Chris@545 117 } else {
Chris@1156 118 int m = std::min(n, int(here.size()));
Chris@1156 119 for (int j = 0; j < m; ++j) {
Chris@1156 120 peak[j] = std::max(here[j], peak[j]);
Chris@545 121 }
Chris@545 122 }
Chris@545 123 }
Chris@546 124
Chris@545 125 m_cache->setColumn(column, peak);
Chris@1153 126 m_coverage[column] = true;
Chris@545 127 }
Chris@545 128
Chris@545 129