Chris@152: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@152: 
Chris@152: /*
Chris@152:     Sonic Visualiser
Chris@152:     An audio file viewer and annotation editor.
Chris@152:     Centre for Digital Music, Queen Mary, University of London.
Chris@202:     This file copyright 2006 Chris Cannam and QMUL.
Chris@152:     
Chris@152:     This program is free software; you can redistribute it and/or
Chris@152:     modify it under the terms of the GNU General Public License as
Chris@152:     published by the Free Software Foundation; either version 2 of the
Chris@152:     License, or (at your option) any later version.  See the file
Chris@152:     COPYING included with this distribution for more information.
Chris@152: */
Chris@152: 
Chris@152: #include "EditableDenseThreeDimensionalModel.h"
Chris@152: 
Chris@478: #include "base/LogRange.h"
Chris@478: 
Chris@152: #include <QTextStream>
Chris@387: #include <QStringList>
Chris@536: #include <QReadLocker>
Chris@536: #include <QWriteLocker>
Chris@387: 
Chris@181: #include <iostream>
Chris@181: 
Chris@256: #include <cmath>
Chris@534: #include <cassert>
Chris@256: 
Chris@1044: using std::vector;
Chris@1044: 
Chris@607: #include "system/System.h"
Chris@607: 
Chris@1040: EditableDenseThreeDimensionalModel::EditableDenseThreeDimensionalModel(sv_samplerate_t sampleRate,
Chris@929:                                                                        int resolution,
Chris@929:                                                                        int yBinCount,
Chris@535:                                                                        CompressionType compression,
Chris@152:                                                                        bool notifyOnAdd) :
Chris@611:     m_startFrame(0),
Chris@152:     m_sampleRate(sampleRate),
Chris@152:     m_resolution(resolution),
Chris@152:     m_yBinCount(yBinCount),
Chris@535:     m_compression(compression),
Chris@152:     m_minimum(0.0),
Chris@152:     m_maximum(0.0),
Chris@256:     m_haveExtents(false),
Chris@152:     m_notifyOnAdd(notifyOnAdd),
Chris@152:     m_sinceLastNotifyMin(-1),
Chris@152:     m_sinceLastNotifyMax(-1),
Chris@152:     m_completion(100)
Chris@152: {
Chris@152: }    
Chris@152: 
Chris@152: bool
Chris@152: EditableDenseThreeDimensionalModel::isOK() const
Chris@152: {
Chris@152:     return true;
Chris@152: }
Chris@152: 
Chris@1040: sv_samplerate_t
Chris@152: EditableDenseThreeDimensionalModel::getSampleRate() const
Chris@152: {
Chris@152:     return m_sampleRate;
Chris@152: }
Chris@152: 
Chris@1038: sv_frame_t
Chris@152: EditableDenseThreeDimensionalModel::getStartFrame() const
Chris@152: {
Chris@611:     return m_startFrame;
Chris@611: }
Chris@611: 
Chris@611: void
Chris@1038: EditableDenseThreeDimensionalModel::setStartFrame(sv_frame_t f)
Chris@611: {
Chris@611:     m_startFrame = f; 
Chris@152: }
Chris@152: 
Chris@1038: sv_frame_t
Chris@152: EditableDenseThreeDimensionalModel::getEndFrame() const
Chris@152: {
Chris@152:     return m_resolution * m_data.size() + (m_resolution - 1);
Chris@152: }
Chris@152: 
Chris@152: Model *
Chris@152: EditableDenseThreeDimensionalModel::clone() const
Chris@152: {
Chris@536:     QReadLocker locker(&m_lock);
Chris@534: 
Chris@152:     EditableDenseThreeDimensionalModel *model =
Chris@152:         new EditableDenseThreeDimensionalModel
Chris@535: 	(m_sampleRate, m_resolution, m_yBinCount, m_compression);
Chris@152: 
Chris@152:     model->m_minimum = m_minimum;
Chris@152:     model->m_maximum = m_maximum;
Chris@256:     model->m_haveExtents = m_haveExtents;
Chris@152: 
Chris@929:     for (int i = 0; i < m_data.size(); ++i) {
Chris@533: 	model->setColumn(i, m_data.at(i));
Chris@152:     }
Chris@152: 
Chris@152:     return model;
Chris@152: }
Chris@152: 
Chris@929: int
Chris@152: EditableDenseThreeDimensionalModel::getResolution() const
Chris@152: {
Chris@152:     return m_resolution;
Chris@152: }
Chris@152: 
Chris@152: void
Chris@929: EditableDenseThreeDimensionalModel::setResolution(int sz)
Chris@152: {
Chris@152:     m_resolution = sz;
Chris@152: }
Chris@152: 
Chris@929: int
Chris@182: EditableDenseThreeDimensionalModel::getWidth() const
Chris@182: {
Chris@182:     return m_data.size();
Chris@182: }
Chris@182: 
Chris@929: int
Chris@182: EditableDenseThreeDimensionalModel::getHeight() const
Chris@152: {
Chris@152:     return m_yBinCount;
Chris@152: }
Chris@152: 
Chris@152: void
Chris@929: EditableDenseThreeDimensionalModel::setHeight(int sz)
Chris@152: {
Chris@152:     m_yBinCount = sz;
Chris@152: }
Chris@152: 
Chris@152: float
Chris@152: EditableDenseThreeDimensionalModel::getMinimumLevel() const
Chris@152: {
Chris@152:     return m_minimum;
Chris@152: }
Chris@152: 
Chris@152: void
Chris@152: EditableDenseThreeDimensionalModel::setMinimumLevel(float level)
Chris@152: {
Chris@152:     m_minimum = level;
Chris@152: }
Chris@152: 
Chris@152: float
Chris@152: EditableDenseThreeDimensionalModel::getMaximumLevel() const
Chris@152: {
Chris@152:     return m_maximum;
Chris@152: }
Chris@152: 
Chris@152: void
Chris@152: EditableDenseThreeDimensionalModel::setMaximumLevel(float level)
Chris@152: {
Chris@152:     m_maximum = level;
Chris@152: }
Chris@152: 
Chris@533: EditableDenseThreeDimensionalModel::Column
Chris@929: EditableDenseThreeDimensionalModel::getColumn(int index) const
Chris@152: {
Chris@536:     QReadLocker locker(&m_lock);
Chris@937:     if (index < 0 || index >= m_data.size()) return Column();
Chris@534:     return expandAndRetrieve(index);
Chris@152: }
Chris@152: 
Chris@152: float
Chris@929: EditableDenseThreeDimensionalModel::getValueAt(int index, int n) const
Chris@152: {
Chris@534:     Column c = getColumn(index);
Chris@929:     if (int(n) < c.size()) return c.at(n);
Chris@534:     return m_minimum;
Chris@534: }
Chris@152: 
Chris@535: //static int given = 0, stored = 0;
Chris@534: 
Chris@534: void
Chris@929: EditableDenseThreeDimensionalModel::truncateAndStore(int index,
Chris@534:                                                      const Column &values)
Chris@534: {
Chris@929:     assert(int(index) < m_data.size());
Chris@534: 
Chris@843:     //cout << "truncateAndStore(" << index << ", " << values.size() << ")" << endl;
Chris@534: 
Chris@535:     // The default case is to store the entire column at m_data[index]
Chris@535:     // and place 0 at m_trunc[index] to indicate that it has not been
Chris@535:     // truncated.  We only do clever stuff if one of the clever-stuff
Chris@535:     // tests works out.
Chris@535: 
Chris@534:     m_trunc[index] = 0;
Chris@535:     if (index == 0 ||
Chris@535:         m_compression == NoCompression ||
Chris@929:         values.size() != int(m_yBinCount)) {
Chris@535: //        given += values.size();
Chris@535: //        stored += values.size();
Chris@534:         m_data[index] = values;
Chris@534:         return;
Chris@152:     }
Chris@152: 
Chris@535:     // Maximum distance between a column and the one we refer to as
Chris@535:     // the source of its truncated values.  Limited by having to fit
Chris@535:     // in a signed char, but in any case small values are usually
Chris@535:     // better
Chris@535:     static int maxdist = 6;
Chris@534: 
Chris@535:     bool known = false; // do we know whether to truncate at top or bottom?
Chris@535:     bool top = false;   // if we do know, will we truncate at top?
Chris@534: 
Chris@535:     // If the previous column is not truncated, then it is the only
Chris@535:     // candidate for comparison.  If it is truncated, then the column
Chris@535:     // that it refers to is the only candidate.  Either way, we only
Chris@535:     // have one possible column to compare against here, and we are
Chris@535:     // being careful to ensure it is not a truncated one (to avoid
Chris@535:     // doing more work recursively when uncompressing).
Chris@534:     int tdist = 1;
Chris@534:     int ptrunc = m_trunc[index-1];
Chris@534:     if (ptrunc < 0) {
Chris@534:         top = false;
Chris@534:         known = true;
Chris@534:         tdist = -ptrunc + 1;
Chris@534:     } else if (ptrunc > 0) {
Chris@534:         top = true;
Chris@534:         known = true;
Chris@534:         tdist = ptrunc + 1;
Chris@534:     }
Chris@534: 
Chris@534:     Column p = expandAndRetrieve(index - tdist);
Chris@534:     int h = m_yBinCount;
Chris@534: 
Chris@534:     if (p.size() == h && tdist <= maxdist) {
Chris@534: 
Chris@534:         int bcount = 0, tcount = 0;
Chris@534:         if (!known || !top) {
Chris@535:             // count how many identical values there are at the bottom
Chris@534:             for (int i = 0; i < h; ++i) {
Chris@534:                 if (values.at(i) == p.at(i)) ++bcount;
Chris@534:                 else break;
Chris@534:             }
Chris@534:         }
Chris@534:         if (!known || top) {
Chris@535:             // count how many identical values there are at the top
Chris@534:             for (int i = h; i > 0; --i) {
Chris@534:                 if (values.at(i-1) == p.at(i-1)) ++tcount;
Chris@534:                 else break;
Chris@534:             }
Chris@534:         }
Chris@534:         if (!known) top = (tcount > bcount);
Chris@534: 
Chris@535:         int limit = h / 4; // don't bother unless we have at least this many
Chris@534:         if ((top ? tcount : bcount) > limit) {
Chris@534:         
Chris@534:             if (!top) {
Chris@535:                 // create a new column with h - bcount values from bcount up
Chris@534:                 Column tcol(h - bcount);
Chris@535: //                given += values.size();
Chris@535: //                stored += h - bcount;
Chris@534:                 for (int i = bcount; i < h; ++i) {
Chris@534:                     tcol[i - bcount] = values.at(i);
Chris@534:                 }
Chris@534:                 m_data[index] = tcol;
Chris@1038:                 m_trunc[index] = (signed char)(-tdist);
Chris@534:                 return;
Chris@534:             } else {
Chris@535:                 // create a new column with h - tcount values from 0 up
Chris@534:                 Column tcol(h - tcount);
Chris@535: //                given += values.size();
Chris@535: //                stored += h - tcount;
Chris@534:                 for (int i = 0; i < h - tcount; ++i) {
Chris@534:                     tcol[i] = values.at(i);
Chris@534:                 }
Chris@534:                 m_data[index] = tcol;
Chris@1038:                 m_trunc[index] = (signed char)(tdist);
Chris@534:                 return;
Chris@534:             }
Chris@534:         }
Chris@534:     }                
Chris@534: 
Chris@535: //    given += values.size();
Chris@535: //    stored += values.size();
Chris@843: //    cout << "given: " << given << ", stored: " << stored << " (" 
Chris@843: //              << ((float(stored) / float(given)) * 100.f) << "%)" << endl;
Chris@534: 
Chris@535:     // default case if nothing wacky worked out
Chris@534:     m_data[index] = values;
Chris@534:     return;
Chris@534: }
Chris@534: 
Chris@534: EditableDenseThreeDimensionalModel::Column
Chris@929: EditableDenseThreeDimensionalModel::expandAndRetrieve(int index) const
Chris@534: {
Chris@535:     // See comment above m_trunc declaration in header
Chris@535: 
Chris@941:     assert(index >= 0 && index < int(m_data.size()));
Chris@534:     Column c = m_data.at(index);
Chris@534:     if (index == 0) {
Chris@534:         return c;
Chris@534:     }
Chris@534:     int trunc = (int)m_trunc[index];
Chris@534:     if (trunc == 0) {
Chris@534:         return c;
Chris@534:     }
Chris@534:     bool top = true;
Chris@534:     int tdist = trunc;
Chris@534:     if (trunc < 0) { top = false; tdist = -trunc; }
Chris@534:     Column p = expandAndRetrieve(index - tdist);
Chris@537:     int psize = p.size(), csize = c.size();
Chris@941:     if (psize != m_yBinCount) {
Chris@843:         cerr << "WARNING: EditableDenseThreeDimensionalModel::expandAndRetrieve: Trying to expand from incorrectly sized column" << endl;
Chris@534:     }
Chris@534:     if (top) {
Chris@537:         for (int i = csize; i < psize; ++i) {
Chris@534:             c.push_back(p.at(i));
Chris@534:         }
Chris@534:     } else {
Chris@593:         // push_front is very slow on QVector -- but not enough to
Chris@593:         // make it desirable to choose a different container, since
Chris@593:         // QVector has all the other advantages for us.  easier to
Chris@593:         // write the whole array out to a new vector
Chris@593:         Column cc(psize);
Chris@593:         for (int i = 0; i < psize - csize; ++i) {
Chris@593:             cc[i] = p.at(i);
Chris@534:         }
Chris@593:         for (int i = 0; i < csize; ++i) {
Chris@593:             cc[i + (psize - csize)] = c.at(i);
Chris@593:         }
Chris@593:         return cc;
Chris@534:     }
Chris@534:     return c;
Chris@152: }
Chris@152: 
Chris@152: void
Chris@929: EditableDenseThreeDimensionalModel::setColumn(int index,
Chris@182:                                               const Column &values)
Chris@152: {
Chris@536:     QWriteLocker locker(&m_lock);
Chris@152: 
Chris@929:     while (int(index) >= m_data.size()) {
Chris@182: 	m_data.push_back(Column());
Chris@534:         m_trunc.push_back(0);
Chris@152:     }
Chris@152: 
Chris@152:     bool allChange = false;
Chris@152: 
Chris@534: //    if (values.size() > m_yBinCount) m_yBinCount = values.size();
Chris@439: 
Chris@929:     for (int i = 0; i < values.size(); ++i) {
Chris@256:         float value = values[i];
Chris@606:         if (ISNAN(value) || ISINF(value)) {
Chris@256:             continue;
Chris@256:         }
Chris@256: 	if (!m_haveExtents || value < m_minimum) {
Chris@256: 	    m_minimum = value;
Chris@152: 	    allChange = true;
Chris@152: 	}
Chris@256: 	if (!m_haveExtents || value > m_maximum) {
Chris@256: 	    m_maximum = value;
Chris@152: 	    allChange = true;
Chris@152: 	}
Chris@256:         m_haveExtents = true;
Chris@152:     }
Chris@152: 
Chris@534:     truncateAndStore(index, values);
Chris@534: 
Chris@593: //    assert(values == expandAndRetrieve(index));
Chris@152: 
Chris@182:     long windowStart = index;
Chris@182:     windowStart *= m_resolution;
Chris@182: 
Chris@152:     if (m_notifyOnAdd) {
Chris@152: 	if (allChange) {
Chris@152: 	    emit modelChanged();
Chris@152: 	} else {
Chris@931: 	    emit modelChangedWithin(windowStart, windowStart + m_resolution);
Chris@152: 	}
Chris@152:     } else {
Chris@152: 	if (allChange) {
Chris@152: 	    m_sinceLastNotifyMin = -1;
Chris@152: 	    m_sinceLastNotifyMax = -1;
Chris@152: 	    emit modelChanged();
Chris@152: 	} else {
Chris@152: 	    if (m_sinceLastNotifyMin == -1 ||
Chris@152: 		windowStart < m_sinceLastNotifyMin) {
Chris@152: 		m_sinceLastNotifyMin = windowStart;
Chris@152: 	    }
Chris@152: 	    if (m_sinceLastNotifyMax == -1 ||
Chris@152: 		windowStart > m_sinceLastNotifyMax) {
Chris@152: 		m_sinceLastNotifyMax = windowStart;
Chris@152: 	    }
Chris@152: 	}
Chris@152:     }
Chris@152: }
Chris@152: 
Chris@152: QString
Chris@929: EditableDenseThreeDimensionalModel::getBinName(int n) const
Chris@152: {
Chris@939:     if (n >= 0 && (int)m_binNames.size() > n) return m_binNames[n];
Chris@152:     else return "";
Chris@152: }
Chris@152: 
Chris@152: void
Chris@929: EditableDenseThreeDimensionalModel::setBinName(int n, QString name)
Chris@152: {
Chris@929:     while ((int)m_binNames.size() <= n) m_binNames.push_back("");
Chris@152:     m_binNames[n] = name;
Chris@152:     emit modelChanged();
Chris@152: }
Chris@152: 
Chris@152: void
Chris@152: EditableDenseThreeDimensionalModel::setBinNames(std::vector<QString> names)
Chris@152: {
Chris@152:     m_binNames = names;
Chris@152:     emit modelChanged();
Chris@152: }
Chris@152: 
Chris@478: bool
Chris@886: EditableDenseThreeDimensionalModel::hasBinValues() const
Chris@886: {
Chris@886:     return !m_binValues.empty();
Chris@886: }
Chris@886: 
Chris@886: float
Chris@929: EditableDenseThreeDimensionalModel::getBinValue(int n) const
Chris@886: {
Chris@929:     if (n < (int)m_binValues.size()) return m_binValues[n];
Chris@886:     else return 0.f;
Chris@886: }
Chris@886: 
Chris@886: void
Chris@886: EditableDenseThreeDimensionalModel::setBinValues(std::vector<float> values)
Chris@886: {
Chris@886:     m_binValues = values;
Chris@886: }
Chris@886: 
Chris@886: QString
Chris@886: EditableDenseThreeDimensionalModel::getBinValueUnit() const
Chris@886: {
Chris@886:     return m_binValueUnit;
Chris@886: }
Chris@886: 
Chris@886: void
Chris@886: EditableDenseThreeDimensionalModel::setBinValueUnit(QString unit)
Chris@886: {
Chris@886:     m_binValueUnit = unit;
Chris@886: }
Chris@886: 
Chris@886: bool
Chris@478: EditableDenseThreeDimensionalModel::shouldUseLogValueScale() const
Chris@478: {
Chris@536:     QReadLocker locker(&m_lock);
Chris@534: 
Chris@1044:     vector<double> sample;
Chris@1044:     vector<int> n;
Chris@478:     
Chris@478:     for (int i = 0; i < 10; ++i) {
Chris@929:         int index = i * 10;
Chris@478:         if (index < m_data.size()) {
Chris@533:             const Column &c = m_data.at(index);
Chris@1044:             while (c.size() > int(sample.size())) {
Chris@1044:                 sample.push_back(0.0);
Chris@478:                 n.push_back(0);
Chris@478:             }
Chris@478:             for (int j = 0; j < c.size(); ++j) {
Chris@533:                 sample[j] += c.at(j);
Chris@478:                 ++n[j];
Chris@478:             }
Chris@478:         }
Chris@478:     }
Chris@478: 
Chris@478:     if (sample.empty()) return false;
Chris@1044:     for (decltype(sample)::size_type j = 0; j < sample.size(); ++j) {
Chris@1044:         if (n[j]) sample[j] /= n[j];
Chris@478:     }
Chris@478:     
Chris@1044:     return LogRange::useLogScale(sample);
Chris@478: }
Chris@478: 
Chris@152: void
Chris@333: EditableDenseThreeDimensionalModel::setCompletion(int completion, bool update)
Chris@152: {
Chris@152:     if (m_completion != completion) {
Chris@152: 	m_completion = completion;
Chris@152: 
Chris@152: 	if (completion == 100) {
Chris@152: 
Chris@152: 	    m_notifyOnAdd = true; // henceforth
Chris@152: 	    emit modelChanged();
Chris@152: 
Chris@152: 	} else if (!m_notifyOnAdd) {
Chris@152: 
Chris@333: 	    if (update &&
Chris@333:                 m_sinceLastNotifyMin >= 0 &&
Chris@152: 		m_sinceLastNotifyMax >= 0) {
Chris@931: 		emit modelChangedWithin(m_sinceLastNotifyMin,
Chris@931:                                         m_sinceLastNotifyMax + m_resolution);
Chris@152: 		m_sinceLastNotifyMin = m_sinceLastNotifyMax = -1;
Chris@152: 	    } else {
Chris@152: 		emit completionChanged();
Chris@152: 	    }
Chris@152: 	} else {
Chris@152: 	    emit completionChanged();
Chris@152: 	}	    
Chris@152:     }
Chris@152: }
Chris@152: 
Chris@318: QString
Chris@318: EditableDenseThreeDimensionalModel::toDelimitedDataString(QString delimiter) const
Chris@318: {
Chris@536:     QReadLocker locker(&m_lock);
Chris@318:     QString s;
Chris@929:     for (int i = 0; i < m_data.size(); ++i) {
Chris@318:         QStringList list;
Chris@929: 	for (int j = 0; j < m_data.at(i).size(); ++j) {
Chris@533:             list << QString("%1").arg(m_data.at(i).at(j));
Chris@318:         }
Chris@318:         s += list.join(delimiter) + "\n";
Chris@318:     }
Chris@318:     return s;
Chris@318: }
Chris@318: 
Chris@838: QString
Chris@1038: EditableDenseThreeDimensionalModel::toDelimitedDataStringSubset(QString delimiter, sv_frame_t f0, sv_frame_t f1) const
Chris@838: {
Chris@838:     QReadLocker locker(&m_lock);
Chris@838:     QString s;
Chris@929:     for (int i = 0; i < m_data.size(); ++i) {
Chris@1038:         sv_frame_t fr = m_startFrame + i * m_resolution;
Chris@1038:         if (fr >= f0 && fr < f1) {
Chris@838:             QStringList list;
Chris@929:             for (int j = 0; j < m_data.at(i).size(); ++j) {
Chris@838:                 list << QString("%1").arg(m_data.at(i).at(j));
Chris@838:             }
Chris@838:             s += list.join(delimiter) + "\n";
Chris@838:         }
Chris@838:     }
Chris@838:     return s;
Chris@838: }
Chris@838: 
Chris@152: void
Chris@152: EditableDenseThreeDimensionalModel::toXml(QTextStream &out,
Chris@314:                                           QString indent,
Chris@314:                                           QString extraAttributes) const
Chris@152: {
Chris@536:     QReadLocker locker(&m_lock);
Chris@534: 
Chris@152:     // For historical reasons we read and write "resolution" as "windowSize"
Chris@152: 
Chris@690:     SVDEBUG << "EditableDenseThreeDimensionalModel::toXml" << endl;
Chris@318: 
Chris@314:     Model::toXml
Chris@314: 	(out, indent,
Chris@611:          QString("type=\"dense\" dimensions=\"3\" windowSize=\"%1\" yBinCount=\"%2\" minimum=\"%3\" maximum=\"%4\" dataset=\"%5\" startFrame=\"%6\" %7")
Chris@152: 	 .arg(m_resolution)
Chris@152: 	 .arg(m_yBinCount)
Chris@152: 	 .arg(m_minimum)
Chris@152: 	 .arg(m_maximum)
Chris@152: 	 .arg(getObjectExportId(&m_data))
Chris@611:          .arg(m_startFrame)
Chris@152: 	 .arg(extraAttributes));
Chris@152: 
Chris@152:     out << indent;
Chris@152:     out << QString("<dataset id=\"%1\" dimensions=\"3\" separator=\" \">\n")
Chris@152: 	.arg(getObjectExportId(&m_data));
Chris@152: 
Chris@929:     for (int i = 0; i < (int)m_binNames.size(); ++i) {
Chris@152: 	if (m_binNames[i] != "") {
Chris@152: 	    out << indent + "  ";
Chris@152: 	    out << QString("<bin number=\"%1\" name=\"%2\"/>\n")
Chris@152: 		.arg(i).arg(m_binNames[i]);
Chris@152: 	}
Chris@152:     }
Chris@152: 
Chris@929:     for (int i = 0; i < (int)m_data.size(); ++i) {
Chris@152: 	out << indent + "  ";
Chris@152: 	out << QString("<row n=\"%1\">").arg(i);
Chris@929: 	for (int j = 0; j < (int)m_data.at(i).size(); ++j) {
Chris@152: 	    if (j > 0) out << " ";
Chris@533: 	    out << m_data.at(i).at(j);
Chris@152: 	}
Chris@152: 	out << QString("</row>\n");
Chris@318:         out.flush();
Chris@152:     }
Chris@152: 
Chris@152:     out << indent + "</dataset>\n";
Chris@152: }
Chris@152: 
Chris@152: