Mercurial > hg > svcore
view data/model/EditableDenseThreeDimensionalModel.cpp @ 977:048173126e71
Fix some uninitialised values (from coverity scan)
author | Chris Cannam |
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date | Wed, 03 Sep 2014 13:06:13 +0100 |
parents | 0009b2b066e0 |
children | cc27f35aa75c |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2006 Chris Cannam and QMUL. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #include "EditableDenseThreeDimensionalModel.h" #include "base/LogRange.h" #include <QTextStream> #include <QStringList> #include <QReadLocker> #include <QWriteLocker> #include <iostream> #include <cmath> #include <cassert> #include "system/System.h" EditableDenseThreeDimensionalModel::EditableDenseThreeDimensionalModel(int sampleRate, int resolution, int yBinCount, CompressionType compression, bool notifyOnAdd) : m_startFrame(0), m_sampleRate(sampleRate), m_resolution(resolution), m_yBinCount(yBinCount), m_compression(compression), m_minimum(0.0), m_maximum(0.0), m_haveExtents(false), m_notifyOnAdd(notifyOnAdd), m_sinceLastNotifyMin(-1), m_sinceLastNotifyMax(-1), m_completion(100) { } bool EditableDenseThreeDimensionalModel::isOK() const { return true; } int EditableDenseThreeDimensionalModel::getSampleRate() const { return m_sampleRate; } int EditableDenseThreeDimensionalModel::getStartFrame() const { return m_startFrame; } void EditableDenseThreeDimensionalModel::setStartFrame(int f) { m_startFrame = f; } int EditableDenseThreeDimensionalModel::getEndFrame() const { return m_resolution * m_data.size() + (m_resolution - 1); } Model * EditableDenseThreeDimensionalModel::clone() const { QReadLocker locker(&m_lock); EditableDenseThreeDimensionalModel *model = new EditableDenseThreeDimensionalModel (m_sampleRate, m_resolution, m_yBinCount, m_compression); model->m_minimum = m_minimum; model->m_maximum = m_maximum; model->m_haveExtents = m_haveExtents; for (int i = 0; i < m_data.size(); ++i) { model->setColumn(i, m_data.at(i)); } return model; } int EditableDenseThreeDimensionalModel::getResolution() const { return m_resolution; } void EditableDenseThreeDimensionalModel::setResolution(int sz) { m_resolution = sz; } int EditableDenseThreeDimensionalModel::getWidth() const { return m_data.size(); } int EditableDenseThreeDimensionalModel::getHeight() const { return m_yBinCount; } void EditableDenseThreeDimensionalModel::setHeight(int sz) { m_yBinCount = sz; } float EditableDenseThreeDimensionalModel::getMinimumLevel() const { return m_minimum; } void EditableDenseThreeDimensionalModel::setMinimumLevel(float level) { m_minimum = level; } float EditableDenseThreeDimensionalModel::getMaximumLevel() const { return m_maximum; } void EditableDenseThreeDimensionalModel::setMaximumLevel(float level) { m_maximum = level; } EditableDenseThreeDimensionalModel::Column EditableDenseThreeDimensionalModel::getColumn(int index) const { QReadLocker locker(&m_lock); if (index < 0 || index >= m_data.size()) return Column(); return expandAndRetrieve(index); } float EditableDenseThreeDimensionalModel::getValueAt(int index, int n) const { Column c = getColumn(index); if (int(n) < c.size()) return c.at(n); return m_minimum; } //static int given = 0, stored = 0; void EditableDenseThreeDimensionalModel::truncateAndStore(int index, const Column &values) { assert(int(index) < m_data.size()); //cout << "truncateAndStore(" << index << ", " << values.size() << ")" << endl; // The default case is to store the entire column at m_data[index] // and place 0 at m_trunc[index] to indicate that it has not been // truncated. We only do clever stuff if one of the clever-stuff // tests works out. m_trunc[index] = 0; if (index == 0 || m_compression == NoCompression || values.size() != int(m_yBinCount)) { // given += values.size(); // stored += values.size(); m_data[index] = values; return; } // Maximum distance between a column and the one we refer to as // the source of its truncated values. Limited by having to fit // in a signed char, but in any case small values are usually // better static int maxdist = 6; bool known = false; // do we know whether to truncate at top or bottom? bool top = false; // if we do know, will we truncate at top? // If the previous column is not truncated, then it is the only // candidate for comparison. If it is truncated, then the column // that it refers to is the only candidate. Either way, we only // have one possible column to compare against here, and we are // being careful to ensure it is not a truncated one (to avoid // doing more work recursively when uncompressing). int tdist = 1; int ptrunc = m_trunc[index-1]; if (ptrunc < 0) { top = false; known = true; tdist = -ptrunc + 1; } else if (ptrunc > 0) { top = true; known = true; tdist = ptrunc + 1; } Column p = expandAndRetrieve(index - tdist); int h = m_yBinCount; if (p.size() == h && tdist <= maxdist) { int bcount = 0, tcount = 0; if (!known || !top) { // count how many identical values there are at the bottom for (int i = 0; i < h; ++i) { if (values.at(i) == p.at(i)) ++bcount; else break; } } if (!known || top) { // count how many identical values there are at the top for (int i = h; i > 0; --i) { if (values.at(i-1) == p.at(i-1)) ++tcount; else break; } } if (!known) top = (tcount > bcount); int limit = h / 4; // don't bother unless we have at least this many if ((top ? tcount : bcount) > limit) { if (!top) { // create a new column with h - bcount values from bcount up Column tcol(h - bcount); // given += values.size(); // stored += h - bcount; for (int i = bcount; i < h; ++i) { tcol[i - bcount] = values.at(i); } m_data[index] = tcol; m_trunc[index] = -tdist; return; } else { // create a new column with h - tcount values from 0 up Column tcol(h - tcount); // given += values.size(); // stored += h - tcount; for (int i = 0; i < h - tcount; ++i) { tcol[i] = values.at(i); } m_data[index] = tcol; m_trunc[index] = tdist; return; } } } // given += values.size(); // stored += values.size(); // cout << "given: " << given << ", stored: " << stored << " (" // << ((float(stored) / float(given)) * 100.f) << "%)" << endl; // default case if nothing wacky worked out m_data[index] = values; return; } EditableDenseThreeDimensionalModel::Column EditableDenseThreeDimensionalModel::expandAndRetrieve(int index) const { // See comment above m_trunc declaration in header assert(index >= 0 && index < int(m_data.size())); Column c = m_data.at(index); if (index == 0) { return c; } int trunc = (int)m_trunc[index]; if (trunc == 0) { return c; } bool top = true; int tdist = trunc; if (trunc < 0) { top = false; tdist = -trunc; } Column p = expandAndRetrieve(index - tdist); int psize = p.size(), csize = c.size(); if (psize != m_yBinCount) { cerr << "WARNING: EditableDenseThreeDimensionalModel::expandAndRetrieve: Trying to expand from incorrectly sized column" << endl; } if (top) { for (int i = csize; i < psize; ++i) { c.push_back(p.at(i)); } } else { // push_front is very slow on QVector -- but not enough to // make it desirable to choose a different container, since // QVector has all the other advantages for us. easier to // write the whole array out to a new vector Column cc(psize); for (int i = 0; i < psize - csize; ++i) { cc[i] = p.at(i); } for (int i = 0; i < csize; ++i) { cc[i + (psize - csize)] = c.at(i); } return cc; } return c; } void EditableDenseThreeDimensionalModel::setColumn(int index, const Column &values) { QWriteLocker locker(&m_lock); while (int(index) >= m_data.size()) { m_data.push_back(Column()); m_trunc.push_back(0); } bool allChange = false; // if (values.size() > m_yBinCount) m_yBinCount = values.size(); for (int i = 0; i < values.size(); ++i) { float value = values[i]; if (ISNAN(value) || ISINF(value)) { continue; } if (!m_haveExtents || value < m_minimum) { m_minimum = value; allChange = true; } if (!m_haveExtents || value > m_maximum) { m_maximum = value; allChange = true; } m_haveExtents = true; } truncateAndStore(index, values); // assert(values == expandAndRetrieve(index)); long windowStart = index; windowStart *= m_resolution; if (m_notifyOnAdd) { if (allChange) { emit modelChanged(); } else { emit modelChangedWithin(windowStart, windowStart + m_resolution); } } else { if (allChange) { m_sinceLastNotifyMin = -1; m_sinceLastNotifyMax = -1; emit modelChanged(); } else { if (m_sinceLastNotifyMin == -1 || windowStart < m_sinceLastNotifyMin) { m_sinceLastNotifyMin = windowStart; } if (m_sinceLastNotifyMax == -1 || windowStart > m_sinceLastNotifyMax) { m_sinceLastNotifyMax = windowStart; } } } } QString EditableDenseThreeDimensionalModel::getBinName(int n) const { if (n >= 0 && (int)m_binNames.size() > n) return m_binNames[n]; else return ""; } void EditableDenseThreeDimensionalModel::setBinName(int n, QString name) { while ((int)m_binNames.size() <= n) m_binNames.push_back(""); m_binNames[n] = name; emit modelChanged(); } void EditableDenseThreeDimensionalModel::setBinNames(std::vector<QString> names) { m_binNames = names; emit modelChanged(); } bool EditableDenseThreeDimensionalModel::hasBinValues() const { return !m_binValues.empty(); } float EditableDenseThreeDimensionalModel::getBinValue(int n) const { if (n < (int)m_binValues.size()) return m_binValues[n]; else return 0.f; } void EditableDenseThreeDimensionalModel::setBinValues(std::vector<float> values) { m_binValues = values; } QString EditableDenseThreeDimensionalModel::getBinValueUnit() const { return m_binValueUnit; } void EditableDenseThreeDimensionalModel::setBinValueUnit(QString unit) { m_binValueUnit = unit; } bool EditableDenseThreeDimensionalModel::shouldUseLogValueScale() const { QReadLocker locker(&m_lock); QVector<float> sample; QVector<int> n; for (int i = 0; i < 10; ++i) { int index = i * 10; if (index < m_data.size()) { const Column &c = m_data.at(index); while (c.size() > sample.size()) { sample.push_back(0.f); n.push_back(0); } for (int j = 0; j < c.size(); ++j) { sample[j] += c.at(j); ++n[j]; } } } if (sample.empty()) return false; for (int j = 0; j < sample.size(); ++j) { if (n[j]) sample[j] /= n[j]; } return LogRange::useLogScale(sample.toStdVector()); } void EditableDenseThreeDimensionalModel::setCompletion(int completion, bool update) { if (m_completion != completion) { m_completion = completion; if (completion == 100) { m_notifyOnAdd = true; // henceforth emit modelChanged(); } else if (!m_notifyOnAdd) { if (update && m_sinceLastNotifyMin >= 0 && m_sinceLastNotifyMax >= 0) { emit modelChangedWithin(m_sinceLastNotifyMin, m_sinceLastNotifyMax + m_resolution); m_sinceLastNotifyMin = m_sinceLastNotifyMax = -1; } else { emit completionChanged(); } } else { emit completionChanged(); } } } QString EditableDenseThreeDimensionalModel::toDelimitedDataString(QString delimiter) const { QReadLocker locker(&m_lock); QString s; for (int i = 0; i < m_data.size(); ++i) { QStringList list; for (int j = 0; j < m_data.at(i).size(); ++j) { list << QString("%1").arg(m_data.at(i).at(j)); } s += list.join(delimiter) + "\n"; } return s; } QString EditableDenseThreeDimensionalModel::toDelimitedDataStringSubset(QString delimiter, int f0, int f1) const { QReadLocker locker(&m_lock); QString s; for (int i = 0; i < m_data.size(); ++i) { int fr = m_startFrame + i * m_resolution; if (fr >= int(f0) && fr < int(f1)) { QStringList list; for (int j = 0; j < m_data.at(i).size(); ++j) { list << QString("%1").arg(m_data.at(i).at(j)); } s += list.join(delimiter) + "\n"; } } return s; } void EditableDenseThreeDimensionalModel::toXml(QTextStream &out, QString indent, QString extraAttributes) const { QReadLocker locker(&m_lock); // For historical reasons we read and write "resolution" as "windowSize" SVDEBUG << "EditableDenseThreeDimensionalModel::toXml" << endl; Model::toXml (out, indent, QString("type=\"dense\" dimensions=\"3\" windowSize=\"%1\" yBinCount=\"%2\" minimum=\"%3\" maximum=\"%4\" dataset=\"%5\" startFrame=\"%6\" %7") .arg(m_resolution) .arg(m_yBinCount) .arg(m_minimum) .arg(m_maximum) .arg(getObjectExportId(&m_data)) .arg(m_startFrame) .arg(extraAttributes)); out << indent; out << QString("<dataset id=\"%1\" dimensions=\"3\" separator=\" \">\n") .arg(getObjectExportId(&m_data)); for (int i = 0; i < (int)m_binNames.size(); ++i) { if (m_binNames[i] != "") { out << indent + " "; out << QString("<bin number=\"%1\" name=\"%2\"/>\n") .arg(i).arg(m_binNames[i]); } } for (int i = 0; i < (int)m_data.size(); ++i) { out << indent + " "; out << QString("<row n=\"%1\">").arg(i); for (int j = 0; j < (int)m_data.at(i).size(); ++j) { if (j > 0) out << " "; out << m_data.at(i).at(j); } out << QString("</row>\n"); out.flush(); } out << indent + "</dataset>\n"; }