Chris@133: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@133: 
Chris@133: /*
Chris@133:     Sonic Visualiser
Chris@133:     An audio file viewer and annotation editor.
Chris@133:     Centre for Digital Music, Queen Mary, University of London.
Chris@195:     This file copyright 2006-2007 QMUL.
Chris@133:     
Chris@133:     This program is free software; you can redistribute it and/or
Chris@133:     modify it under the terms of the GNU General Public License as
Chris@133:     published by the Free Software Foundation; either version 2 of the
Chris@133:     License, or (at your option) any later version.  See the file
Chris@133:     COPYING included with this distribution for more information.
Chris@133: */
Chris@133: 
Chris@133: #include "SpectrumLayer.h"
Chris@133: 
Chris@133: #include "data/model/FFTModel.h"
Chris@133: #include "view/View.h"
Chris@153: #include "base/AudioLevel.h"
Chris@153: #include "base/Preferences.h"
Chris@167: #include "base/RangeMapper.h"
Chris@277: #include "base/Pitch.h"
Chris@1147: #include "base/Strings.h"
Chris@1078: 
Chris@376: #include "ColourMapper.h"
Chris@1078: #include "PaintAssistant.h"
Chris@1276: #include "PianoScale.h"
Chris@1281: #include "HorizontalFrequencyScale.h"
Chris@254: 
Chris@254: #include <QPainter>
Chris@316: #include <QTextStream>
Chris@316: 
Chris@133: 
Chris@133: SpectrumLayer::SpectrumLayer() :
Chris@193:     m_originModel(0),
Chris@153:     m_channel(-1),
Chris@153:     m_channelSet(false),
Chris@290:     m_windowSize(4096),
Chris@153:     m_windowType(HanningWindow),
Chris@290:     m_windowHopLevel(3),
Chris@284:     m_showPeaks(false),
Chris@275:     m_newFFTNeeded(true)
Chris@133: {
Chris@153:     Preferences *prefs = Preferences::getInstance();
Chris@153:     connect(prefs, SIGNAL(propertyChanged(PropertyContainer::PropertyName)),
Chris@153:             this, SLOT(preferenceChanged(PropertyContainer::PropertyName)));
Chris@153:     setWindowType(prefs->getWindowType());
Chris@195: 
Chris@195:     setBinScale(LogBins);
Chris@133: }
Chris@133: 
Chris@133: SpectrumLayer::~SpectrumLayer()
Chris@133: {
Chris@349:     Model *m = const_cast<Model *>
Chris@349:         (static_cast<const Model *>(m_sliceableModel));
Chris@458:     if (m) m->aboutToDelete();
Chris@349:     m_sliceableModel = 0;
Chris@349:     delete m;
Chris@133: }
Chris@133: 
Chris@133: void
Chris@133: SpectrumLayer::setModel(DenseTimeValueModel *model)
Chris@133: {
Chris@587:     SVDEBUG << "SpectrumLayer::setModel(" << model << ") from " << m_originModel << endl;
Chris@345:     
Chris@193:     if (m_originModel == model) return;
Chris@349: 
Chris@193:     m_originModel = model;
Chris@277: 
Chris@350:     if (m_sliceableModel) {
Chris@350:         Model *m = const_cast<Model *>
Chris@350:             (static_cast<const Model *>(m_sliceableModel));
Chris@350:         m->aboutToDelete();
Chris@350:         setSliceableModel(0);
Chris@350:         delete m;
Chris@350:     }
Chris@350: 
Chris@349:     m_newFFTNeeded = true;
Chris@349: 
Chris@349:     emit layerParametersChanged();
Chris@349: }
Chris@349: 
Chris@349: void
Chris@349: SpectrumLayer::setChannel(int channel)
Chris@349: {
Chris@587:     SVDEBUG << "SpectrumLayer::setChannel(" << channel << ") from " << m_channel << endl;
Chris@349:     
Chris@349:     m_channelSet = true;
Chris@349:     
Chris@349:     if (m_channel == channel) return;
Chris@349: 
Chris@349:     m_channel = channel;
Chris@349: 
Chris@349:     m_newFFTNeeded = true;
Chris@349: 
Chris@349:     emit layerParametersChanged();
Chris@153: }
Chris@153: 
Chris@153: void
Chris@193: SpectrumLayer::setupFFT()
Chris@153: {
Chris@349:     if (m_sliceableModel) {
Chris@349:         Model *m = const_cast<Model *>
Chris@349:             (static_cast<const Model *>(m_sliceableModel));
Chris@349:         m->aboutToDelete();
Chris@193:         setSliceableModel(0);
Chris@349:         delete m;
Chris@349:     }
Chris@349: 
Chris@349:     if (!m_originModel) {
Chris@349:         return;
Chris@153:     }
Chris@153: 
Chris@193:     FFTModel *newFFT = new FFTModel(m_originModel,
Chris@193:                                     m_channel,
Chris@193:                                     m_windowType,
Chris@193:                                     m_windowSize,
Chris@193:                                     getWindowIncrement(),
Chris@975:                                     m_windowSize);
Chris@153: 
Chris@193:     setSliceableModel(newFFT);
Chris@193: 
Chris@254:     m_biasCurve.clear();
Chris@805:     for (int i = 0; i < m_windowSize; ++i) {
Chris@254:         m_biasCurve.push_back(1.f / (float(m_windowSize)/2.f));
Chris@254:     }
Chris@254: 
Chris@349:     m_newFFTNeeded = false;
Chris@133: }
Chris@133: 
Chris@153: Layer::PropertyList
Chris@153: SpectrumLayer::getProperties() const
Chris@153: {
Chris@193:     PropertyList list = SliceLayer::getProperties();
Chris@153:     list.push_back("Window Size");
Chris@153:     list.push_back("Window Increment");
Chris@284:     list.push_back("Show Peak Frequencies");
Chris@153:     return list;
Chris@153: }
Chris@153: 
Chris@153: QString
Chris@153: SpectrumLayer::getPropertyLabel(const PropertyName &name) const
Chris@153: {
Chris@153:     if (name == "Window Size") return tr("Window Size");
Chris@153:     if (name == "Window Increment") return tr("Window Overlap");
Chris@284:     if (name == "Show Peak Frequencies") return tr("Show Peak Frequencies");
Chris@193:     return SliceLayer::getPropertyLabel(name);
Chris@153: }
Chris@153: 
Chris@335: QString
Chris@335: SpectrumLayer::getPropertyIconName(const PropertyName &name) const
Chris@335: {
Chris@335:     if (name == "Show Peak Frequencies") return "show-peaks";
Chris@335:     return SliceLayer::getPropertyIconName(name);
Chris@335: }
Chris@335: 
Chris@153: Layer::PropertyType
Chris@153: SpectrumLayer::getPropertyType(const PropertyName &name) const
Chris@153: {
Chris@193:     if (name == "Window Size") return ValueProperty;
Chris@193:     if (name == "Window Increment") return ValueProperty;
Chris@284:     if (name == "Show Peak Frequencies") return ToggleProperty;
Chris@193:     return SliceLayer::getPropertyType(name);
Chris@153: }
Chris@153: 
Chris@153: QString
Chris@153: SpectrumLayer::getPropertyGroupName(const PropertyName &name) const
Chris@153: {
Chris@153:     if (name == "Window Size" ||
Chris@1266:         name == "Window Increment") return tr("Window");
Chris@557:     if (name == "Show Peak Frequencies") return tr("Bins");
Chris@193:     return SliceLayer::getPropertyGroupName(name);
Chris@153: }
Chris@153: 
Chris@153: int
Chris@153: SpectrumLayer::getPropertyRangeAndValue(const PropertyName &name,
Chris@216:                                         int *min, int *max, int *deflt) const
Chris@153: {
Chris@216:     int val = 0;
Chris@153: 
Chris@216:     int garbage0, garbage1, garbage2;
Chris@153:     if (!min) min = &garbage0;
Chris@153:     if (!max) max = &garbage1;
Chris@216:     if (!deflt) deflt = &garbage2;
Chris@153: 
Chris@193:     if (name == "Window Size") {
Chris@153: 
Chris@1266:         *min = 0;
Chris@1266:         *max = 15;
Chris@216:         *deflt = 5;
Chris@1266:         
Chris@1266:         val = 0;
Chris@1266:         int ws = m_windowSize;
Chris@1266:         while (ws > 32) { ws >>= 1; val ++; }
Chris@153: 
Chris@153:     } else if (name == "Window Increment") {
Chris@1266:         
Chris@1266:         *min = 0;
Chris@1266:         *max = 5;
Chris@216:         *deflt = 2;
Chris@1266:         
Chris@216:         val = m_windowHopLevel;
Chris@153:     
Chris@284:     } else if (name == "Show Peak Frequencies") {
Chris@284: 
Chris@284:         return m_showPeaks ? 1 : 0;
Chris@284: 
Chris@153:     } else {
Chris@193: 
Chris@216:         val = SliceLayer::getPropertyRangeAndValue(name, min, max, deflt);
Chris@153:     }
Chris@153: 
Chris@216:     return val;
Chris@153: }
Chris@153: 
Chris@153: QString
Chris@153: SpectrumLayer::getPropertyValueLabel(const PropertyName &name,
Chris@1266:                                     int value) const
Chris@153: {
Chris@153:     if (name == "Window Size") {
Chris@1266:         return QString("%1").arg(32 << value);
Chris@153:     }
Chris@153:     if (name == "Window Increment") {
Chris@1266:         switch (value) {
Chris@1266:         default:
Chris@1266:         case 0: return tr("None");
Chris@1266:         case 1: return tr("25 %");
Chris@1266:         case 2: return tr("50 %");
Chris@1266:         case 3: return tr("75 %");
Chris@1266:         case 4: return tr("87.5 %");
Chris@1266:         case 5: return tr("93.75 %");
Chris@1266:         }
Chris@153:     }
Chris@193:     return SliceLayer::getPropertyValueLabel(name, value);
Chris@153: }
Chris@153: 
Chris@167: RangeMapper *
Chris@167: SpectrumLayer::getNewPropertyRangeMapper(const PropertyName &name) const
Chris@167: {
Chris@193:     return SliceLayer::getNewPropertyRangeMapper(name);
Chris@167: }
Chris@167: 
Chris@133: void
Chris@153: SpectrumLayer::setProperty(const PropertyName &name, int value)
Chris@133: {
Chris@193:     if (name == "Window Size") {
Chris@1266:         setWindowSize(32 << value);
Chris@153:     } else if (name == "Window Increment") {
Chris@153:         setWindowHopLevel(value);
Chris@284:     } else if (name == "Show Peak Frequencies") {
Chris@284:         setShowPeaks(value ? true : false);
Chris@193:     } else {
Chris@193:         SliceLayer::setProperty(name, value);
Chris@153:     }
Chris@153: }
Chris@153: 
Chris@153: void
Chris@805: SpectrumLayer::setWindowSize(int ws)
Chris@153: {
Chris@153:     if (m_windowSize == ws) return;
Chris@153:     m_windowSize = ws;
Chris@275:     m_newFFTNeeded = true;
Chris@153:     emit layerParametersChanged();
Chris@153: }
Chris@153: 
Chris@153: void
Chris@805: SpectrumLayer::setWindowHopLevel(int v)
Chris@153: {
Chris@153:     if (m_windowHopLevel == v) return;
Chris@153:     m_windowHopLevel = v;
Chris@275:     m_newFFTNeeded = true;
Chris@153:     emit layerParametersChanged();
Chris@153: }
Chris@153: 
Chris@153: void
Chris@153: SpectrumLayer::setWindowType(WindowType w)
Chris@153: {
Chris@153:     if (m_windowType == w) return;
Chris@153:     m_windowType = w;
Chris@275:     m_newFFTNeeded = true;
Chris@153:     emit layerParametersChanged();
Chris@153: }
Chris@153: 
Chris@153: void
Chris@284: SpectrumLayer::setShowPeaks(bool show)
Chris@284: {
Chris@284:     if (m_showPeaks == show) return;
Chris@284:     m_showPeaks = show;
Chris@284:     emit layerParametersChanged();
Chris@284: }
Chris@284: 
Chris@284: void
Chris@153: SpectrumLayer::preferenceChanged(PropertyContainer::PropertyName name)
Chris@153: {
Chris@153:     if (name == "Window Type") {
Chris@153:         setWindowType(Preferences::getInstance()->getWindowType());
Chris@153:         return;
Chris@153:     }
Chris@153: }
Chris@153: 
Chris@1238: double
Chris@1238: SpectrumLayer::getFrequencyForX(const LayerGeometryProvider *v, double x) const
Chris@133: {
Chris@1238:     if (!m_sliceableModel) return 0;
Chris@1238:     double bin = getBinForX(v, x);
Chris@1281:     // we assume the frequency of a bin corresponds to the centre of
Chris@1281:     // its visual range
Chris@1281:     bin -= 0.5;
Chris@1238:     return (m_sliceableModel->getSampleRate() * bin) /
Chris@1238:         (m_sliceableModel->getHeight() * 2);
Chris@133: }
Chris@133: 
Chris@908: double
Chris@1238: SpectrumLayer::getXForFrequency(const LayerGeometryProvider *v, double freq) const
Chris@265: {
Chris@280:     if (!m_sliceableModel) return 0;
Chris@1238:     double bin = (freq * m_sliceableModel->getHeight() * 2) /
Chris@1238:         m_sliceableModel->getSampleRate();
Chris@1281:     // we want the centre of the bin range
Chris@1281:     bin += 0.5;
Chris@1238:     return getXForBin(v, bin);
Chris@254: }
Chris@254: 
Chris@260: bool
Chris@918: SpectrumLayer::getXScaleValue(const LayerGeometryProvider *v, int x, 
Chris@908:                               double &value, QString &unit) const
Chris@260: {
Chris@1238:     value = getFrequencyForX(v, x);
Chris@260:     unit = "Hz";
Chris@260:     return true;
Chris@260: }
Chris@260: 
Chris@264: bool
Chris@918: SpectrumLayer::getYScaleValue(const LayerGeometryProvider *v, int y,
Chris@908:                               double &value, QString &unit) const
Chris@274: {
Chris@1238:     value = getValueForY(v, y);
Chris@274: 
Chris@274:     if (m_energyScale == dBScale || m_energyScale == MeterScale) {
Chris@274: 
Chris@908:         if (value > 0.0) {
Chris@908:             value = 10.0 * log10(value);
Chris@284:             if (value < m_threshold) value = m_threshold;
Chris@284:         } else value = m_threshold;
Chris@274: 
Chris@274:         unit = "dBV";
Chris@274: 
Chris@274:     } else {
Chris@274:         unit = "V";
Chris@274:     }
Chris@274: 
Chris@274:     return true;
Chris@274: }
Chris@274: 
Chris@274: bool
Chris@918: SpectrumLayer::getYScaleDifference(const LayerGeometryProvider *v, int y0, int y1,
Chris@908:                                    double &diff, QString &unit) const
Chris@274: {
Chris@274:     bool rv = SliceLayer::getYScaleDifference(v, y0, y1, diff, unit);
Chris@274:     if (rv && (unit == "dBV")) unit = "dB";
Chris@274:     return rv;
Chris@274: }
Chris@274: 
Chris@274: 
Chris@274: bool
Chris@918: SpectrumLayer::getCrosshairExtents(LayerGeometryProvider *v, QPainter &paint,
Chris@264:                                    QPoint cursorPos,
Chris@264:                                    std::vector<QRect> &extents) const
Chris@264: {
Chris@918:     QRect vertical(cursorPos.x(), cursorPos.y(), 1, v->getPaintHeight() - cursorPos.y());
Chris@264:     extents.push_back(vertical);
Chris@264: 
Chris@918:     QRect horizontal(0, cursorPos.y(), v->getPaintWidth(), 12);
Chris@264:     extents.push_back(horizontal);
Chris@264: 
Chris@280:     int hoffset = 2;
Chris@280:     if (m_binScale == LogBins) hoffset = 13;
Chris@278: 
Chris@607:     int sw = getVerticalScaleWidth(v, false, paint);
Chris@280: 
Chris@280:     QRect value(sw, cursorPos.y() - paint.fontMetrics().ascent() - 2,
Chris@280:                 paint.fontMetrics().width("0.0000001 V") + 2,
Chris@264:                 paint.fontMetrics().height());
Chris@280:     extents.push_back(value);
Chris@280: 
Chris@280:     QRect log(sw, cursorPos.y() + 2,
Chris@280:               paint.fontMetrics().width("-80.000 dBV") + 2,
Chris@280:               paint.fontMetrics().height());
Chris@280:     extents.push_back(log);
Chris@280: 
Chris@280:     QRect freq(cursorPos.x(),
Chris@918:                v->getPaintHeight() - paint.fontMetrics().height() - hoffset,
Chris@280:                paint.fontMetrics().width("123456 Hz") + 2,
Chris@280:                paint.fontMetrics().height());
Chris@280:     extents.push_back(freq);
Chris@264: 
Chris@278:     int w(paint.fontMetrics().width("C#10+50c") + 2);
Chris@278:     QRect pitch(cursorPos.x() - w,
Chris@918:                 v->getPaintHeight() - paint.fontMetrics().height() - hoffset,
Chris@278:                 w,
Chris@278:                 paint.fontMetrics().height());
Chris@278:     extents.push_back(pitch);
Chris@278: 
Chris@264:     return true;
Chris@264: }
Chris@264: 
Chris@254: void
Chris@918: SpectrumLayer::paintCrosshairs(LayerGeometryProvider *v, QPainter &paint,
Chris@254:                                QPoint cursorPos) const
Chris@254: {
Chris@280:     if (!m_sliceableModel) return;
Chris@280: 
Chris@254:     paint.save();
Chris@282:     QFont fn = paint.font();
Chris@282:     if (fn.pointSize() > 8) {
Chris@282:         fn.setPointSize(fn.pointSize() - 1);
Chris@282:         paint.setFont(fn);
Chris@282:     }
Chris@254: 
Chris@254:     ColourMapper mapper(m_colourMap, 0, 1);
Chris@254:     paint.setPen(mapper.getContrastingColour());
Chris@254: 
Chris@1238:     int xorigin = m_xorigins[v->getId()];
Chris@918:     paint.drawLine(xorigin, cursorPos.y(), v->getPaintWidth(), cursorPos.y());
Chris@918:     paint.drawLine(cursorPos.x(), cursorPos.y(), cursorPos.x(), v->getPaintHeight());
Chris@254:     
Chris@1238:     double fundamental = getFrequencyForX(v, cursorPos.x());
Chris@254: 
Chris@280:     int hoffset = 2;
Chris@280:     if (m_binScale == LogBins) hoffset = 13;
Chris@278: 
Chris@1078:     PaintAssistant::drawVisibleText(v, paint,
Chris@1238:                                     cursorPos.x() + 2,
Chris@1238:                                     v->getPaintHeight() - 2 - hoffset,
Chris@1238:                                     QString("%1 Hz").arg(fundamental),
Chris@1238:                                     PaintAssistant::OutlinedText);
Chris@278: 
Chris@278:     if (Pitch::isFrequencyInMidiRange(fundamental)) {
Chris@278:         QString pitchLabel = Pitch::getPitchLabelForFrequency(fundamental);
Chris@1078:         PaintAssistant::drawVisibleText(v, paint,
Chris@1238:                                         cursorPos.x() -
Chris@1238:                                         paint.fontMetrics().width(pitchLabel) - 2,
Chris@1238:                                         v->getPaintHeight() - 2 - hoffset,
Chris@1238:                                         pitchLabel,
Chris@1238:                                         PaintAssistant::OutlinedText);
Chris@278:     }
Chris@264: 
Chris@1238:     double value = getValueForY(v, cursorPos.y());
Chris@908:     double thresh = m_threshold;
Chris@908:     double db = thresh;
Chris@908:     if (value > 0.0) db = 10.0 * log10(value);
Chris@280:     if (db < thresh) db = thresh;
Chris@280: 
Chris@1078:     PaintAssistant::drawVisibleText(v, paint,
Chris@280:                        xorigin + 2,
Chris@280:                        cursorPos.y() - 2,
Chris@280:                        QString("%1 V").arg(value),
Chris@1078:                        PaintAssistant::OutlinedText);
Chris@280: 
Chris@1078:     PaintAssistant::drawVisibleText(v, paint,
Chris@280:                        xorigin + 2,
Chris@280:                        cursorPos.y() + 2 + paint.fontMetrics().ascent(),
Chris@280:                        QString("%1 dBV").arg(db),
Chris@1078:                        PaintAssistant::OutlinedText);
Chris@280:     
Chris@254:     int harmonic = 2;
Chris@254: 
Chris@254:     while (harmonic < 100) {
Chris@254: 
Chris@1238:         int hx = int(lrint(getXForFrequency(v, fundamental * harmonic)));
Chris@254: 
Chris@918:         if (hx < xorigin || hx > v->getPaintWidth()) break;
Chris@254:         
Chris@254:         int len = 7;
Chris@254: 
Chris@254:         if (harmonic % 2 == 0) {
Chris@254:             if (harmonic % 4 == 0) {
Chris@254:                 len = 12;
Chris@254:             } else {
Chris@254:                 len = 10;
Chris@254:             }
Chris@254:         }
Chris@254: 
Chris@908:         paint.drawLine(hx,
Chris@254:                        cursorPos.y(),
Chris@908:                        hx,
Chris@254:                        cursorPos.y() + len);
Chris@254: 
Chris@254:         ++harmonic;
Chris@254:     }
Chris@254: 
Chris@254:     paint.restore();
Chris@254: }
Chris@254: 
Chris@199: QString
Chris@918: SpectrumLayer::getFeatureDescription(LayerGeometryProvider *v, QPoint &p) const
Chris@199: {
Chris@199:     if (!m_sliceableModel) return "";
Chris@199: 
Chris@199:     int minbin = 0, maxbin = 0, range = 0;
Chris@805:     QString genericDesc = SliceLayer::getFeatureDescriptionAux
Chris@199:         (v, p, false, minbin, maxbin, range);
Chris@199: 
Chris@199:     if (genericDesc == "") return "";
Chris@199: 
Chris@1238:     int i0 = minbin - m_minbin;
Chris@1238:     int i1 = maxbin - m_minbin;
Chris@1238:         
Chris@1238:     float minvalue = 0.0;
Chris@1238:     if (in_range_for(m_values, i0)) minvalue = m_values[i0];
Chris@199: 
Chris@1238:     float maxvalue = minvalue;
Chris@1238:     if (in_range_for(m_values, i1)) maxvalue = m_values[i1];
Chris@1238:     
Chris@199:     if (minvalue > maxvalue) std::swap(minvalue, maxvalue);
Chris@199:     
Chris@199:     QString binstr;
Chris@199:     QString hzstr;
Chris@908:     int minfreq = int(lrint((minbin * m_sliceableModel->getSampleRate()) /
Chris@908:                             m_windowSize));
Chris@1256:     int maxfreq = int(lrint((std::max(maxbin, minbin)
Chris@908:                              * m_sliceableModel->getSampleRate()) /
Chris@908:                             m_windowSize));
Chris@199: 
Chris@199:     if (maxbin != minbin) {
Chris@199:         binstr = tr("%1 - %2").arg(minbin+1).arg(maxbin+1);
Chris@199:     } else {
Chris@199:         binstr = QString("%1").arg(minbin+1);
Chris@199:     }
Chris@199:     if (minfreq != maxfreq) {
Chris@199:         hzstr = tr("%1 - %2 Hz").arg(minfreq).arg(maxfreq);
Chris@199:     } else {
Chris@199:         hzstr = tr("%1 Hz").arg(minfreq);
Chris@199:     }
Chris@199:     
Chris@199:     QString valuestr;
Chris@199:     if (maxvalue != minvalue) {
Chris@199:         valuestr = tr("%1 - %2").arg(minvalue).arg(maxvalue);
Chris@199:     } else {
Chris@199:         valuestr = QString("%1").arg(minvalue);
Chris@199:     }
Chris@199:     
Chris@199:     QString dbstr;
Chris@908:     double mindb = AudioLevel::multiplier_to_dB(minvalue);
Chris@908:     double maxdb = AudioLevel::multiplier_to_dB(maxvalue);
Chris@199:     QString mindbstr;
Chris@199:     QString maxdbstr;
Chris@199:     if (mindb == AudioLevel::DB_FLOOR) {
Chris@1147:         mindbstr = Strings::minus_infinity;
Chris@199:     } else {
Chris@908:         mindbstr = QString("%1").arg(lrint(mindb));
Chris@199:     }
Chris@199:     if (maxdb == AudioLevel::DB_FLOOR) {
Chris@1147:         maxdbstr = Strings::minus_infinity;
Chris@199:     } else {
Chris@908:         maxdbstr = QString("%1").arg(lrint(maxdb));
Chris@199:     }
Chris@908:     if (lrint(mindb) != lrint(maxdb)) {
Chris@199:         dbstr = tr("%1 - %2").arg(mindbstr).arg(maxdbstr);
Chris@199:     } else {
Chris@199:         dbstr = tr("%1").arg(mindbstr);
Chris@199:     }
Chris@199: 
Chris@199:     QString description;
Chris@199: 
Chris@248:     if (range > int(m_sliceableModel->getResolution())) {
Chris@199:         description = tr("%1\nBin:\t%2 (%3)\n%4 value:\t%5\ndB:\t%6")
Chris@199:             .arg(genericDesc)
Chris@199:             .arg(binstr)
Chris@199:             .arg(hzstr)
Chris@199:             .arg(m_samplingMode == NearestSample ? tr("First") :
Chris@199:                  m_samplingMode == SampleMean ? tr("Mean") : tr("Peak"))
Chris@199:             .arg(valuestr)
Chris@199:             .arg(dbstr);
Chris@199:     } else {
Chris@199:         description = tr("%1\nBin:\t%2 (%3)\nValue:\t%4\ndB:\t%5")
Chris@199:             .arg(genericDesc)
Chris@199:             .arg(binstr)
Chris@199:             .arg(hzstr)
Chris@199:             .arg(valuestr)
Chris@199:             .arg(dbstr);
Chris@199:     }
Chris@199:     
Chris@199:     return description;
Chris@199: }
Chris@199: 
Chris@254: void
Chris@916: SpectrumLayer::paint(LayerGeometryProvider *v, QPainter &paint, QRect rect) const
Chris@275: {
Chris@275:     if (!m_originModel || !m_originModel->isOK() ||
Chris@349:         !m_originModel->isReady()) {
Chris@587:         SVDEBUG << "SpectrumLayer::paint: no origin model, or origin model not OK or not ready" << endl;
Chris@349:         return;
Chris@349:     }
Chris@275: 
Chris@275:     if (m_newFFTNeeded) {
Chris@587:         SVDEBUG << "SpectrumLayer::paint: new FFT needed, calling setupFFT" << endl;
Chris@275:         const_cast<SpectrumLayer *>(this)->setupFFT(); //ugh
Chris@275:     }
Chris@277: 
Chris@277:     FFTModel *fft = dynamic_cast<FFTModel *>
Chris@277:         (const_cast<DenseThreeDimensionalModel *>(m_sliceableModel));
Chris@277: 
Chris@908:     double thresh = (pow(10, -6) / m_gain) * (m_windowSize / 2.0); // -60dB adj
Chris@277: 
Chris@607:     int xorigin = getVerticalScaleWidth(v, false, paint) + 1;
Chris@1281:     int scaleHeight = getHorizontalScaleHeight(v, paint);
Chris@345: 
Chris@284:     if (fft && m_showPeaks) {
Chris@277: 
Chris@277:         // draw peak lines
Chris@277: 
Chris@908:         int col = int(v->getCentreFrame() / fft->getResolution());
Chris@277: 
Chris@277:         paint.save();
Chris@277:         paint.setRenderHint(QPainter::Antialiasing, false);
Chris@277: 
Chris@1281:         ColourMapper mapper =
Chris@1281:             hasLightBackground() ?
Chris@1281:             ColourMapper(ColourMapper::BlackOnWhite, 0, 1) :
Chris@1281:             ColourMapper(ColourMapper::WhiteOnBlack, 0, 1);
Chris@1281:         
Chris@290:         int peakminbin = 0;
Chris@290:         int peakmaxbin = fft->getHeight() - 1;
Chris@908:         double peakmaxfreq = Pitch::getFrequencyForPitch(128);
Chris@908:         peakmaxbin = int(((peakmaxfreq * fft->getHeight() * 2) / fft->getSampleRate()));
Chris@290:         
Chris@280:         FFTModel::PeakSet peaks = fft->getPeakFrequencies
Chris@290:             (FFTModel::MajorPitchAdaptivePeaks, col, peakminbin, peakmaxbin);
Chris@280: 
Chris@277:         BiasCurve curve;
Chris@277:         getBiasCurve(curve);
Chris@908:         int cs = int(curve.size());
Chris@280: 
Chris@908:         std::vector<double> values;
Chris@277:         
Chris@805:         for (int bin = 0; bin < fft->getHeight(); ++bin) {
Chris@908:             double value = m_sliceableModel->getValueAt(col, bin);
Chris@280:             if (bin < cs) value *= curve[bin];
Chris@280:             values.push_back(value);
Chris@280:         }
Chris@280: 
Chris@280:         for (FFTModel::PeakSet::iterator i = peaks.begin();
Chris@280:              i != peaks.end(); ++i) {
Chris@280: 
Chris@805:             int bin = i->first;
Chris@277:             
Chris@682: //            cerr << "bin = " << bin << ", thresh = " << thresh << ", value = " << fft->getMagnitudeAt(col, bin) << endl;
Chris@280: 
Chris@908:             if (!fft->isOverThreshold(col, bin, float(thresh))) continue;
Chris@277:             
Chris@908:             double freq = i->second;
Chris@280:           
Chris@1238:             int x = int(lrint(getXForFrequency(v, freq)));
Chris@277: 
Chris@908:             double norm = 0.f;
Chris@1238:             (void)getYForValue(v, values[bin], norm); // don't need return value, need norm
Chris@277: 
Chris@277:             paint.setPen(mapper.map(norm));
Chris@1281:             paint.drawLine(x, 0, x, v->getPaintHeight() - scaleHeight - 1);
Chris@277:         }
Chris@277: 
Chris@277:         paint.restore();
Chris@277:     }
Chris@275:     
Chris@1281:     paint.save();
Chris@1281:     
Chris@275:     SliceLayer::paint(v, paint, rect);
Chris@1281:     
Chris@1281:     paintHorizontalScale(v, paint, xorigin);
Chris@277: 
Chris@1281:     paint.restore();
Chris@1281: }
Chris@1281: 
Chris@1281: int
Chris@1281: SpectrumLayer::getHorizontalScaleHeight(LayerGeometryProvider *v,
Chris@1281:                                         QPainter &paint) const
Chris@1281: {
Chris@1281:     int pkh = int(paint.fontMetrics().height() * 0.7 + 0.5);
Chris@1281:     if (pkh < 10) pkh = 10;
Chris@1281: 
Chris@1281:     int scaleh = HorizontalFrequencyScale().getHeight(v, paint);
Chris@1281: 
Chris@1281:     return pkh + scaleh;
Chris@1281: }
Chris@1281: 
Chris@1281: void
Chris@1281: SpectrumLayer::paintHorizontalScale(LayerGeometryProvider *v,
Chris@1281:                                     QPainter &paint,
Chris@1281:                                     int xorigin) const
Chris@1281: {
Chris@278:     //!!! All of this stuff relating to depicting frequencies
Chris@1238:     // (keyboard, crosshairs etc) should be applicable to any slice
Chris@1238:     // layer whose model has a vertical scale unit of Hz.  However,
Chris@1238:     // the dense 3d model at the moment doesn't record its vertical
Chris@1238:     // scale unit -- we need to fix that and hoist this code as
Chris@1238:     // appropriate.  Same really goes for any code in SpectrogramLayer
Chris@1238:     // that could be relevant to Colour3DPlotLayer with unit Hz, but
Chris@1238:     // that's a bigger proposition.
Chris@278: 
Chris@1281:     if (!v->getViewManager()->shouldShowHorizontalValueScale()) {
Chris@1281:         return;
Chris@1281:     }
Chris@1281:     
Chris@1281:     int totalScaleHeight = getHorizontalScaleHeight(v, paint); // inc piano
Chris@1281:     int freqScaleHeight = HorizontalFrequencyScale().getHeight(v, paint);
Chris@1281:     int paintHeight = v->getPaintHeight();
Chris@1281:     int paintWidth = v->getPaintWidth();
Chris@277: 
Chris@1238:     PianoScale().paintPianoHorizontal
Chris@1276:         (v, this, paint,
Chris@1281:          QRect(xorigin, paintHeight - totalScaleHeight - 1,
Chris@1281:                paintWidth - 1, totalScaleHeight - freqScaleHeight));
Chris@345: 
Chris@1281:     int scaleLeft = int(getXForBin(v, 1));
Chris@1281:     
Chris@1281:     paint.drawLine(int(getXForBin(v, 0)), paintHeight - freqScaleHeight,
Chris@1281:                    scaleLeft, paintHeight - freqScaleHeight);
Chris@1281: 
Chris@1281:     QString hz = tr("Hz");
Chris@1281:     int hzw = paint.fontMetrics().width(hz);
Chris@1281:     if (scaleLeft > hzw + 5) {
Chris@1281:         paint.drawText
Chris@1281:             (scaleLeft - hzw - 5,
Chris@1281:              paintHeight - freqScaleHeight + paint.fontMetrics().ascent() + 5,
Chris@1281:              hz);
Chris@1281:     }
Chris@1281: 
Chris@1281:     HorizontalFrequencyScale().paintScale
Chris@1276:         (v, this, paint,
Chris@1281:          QRect(scaleLeft, paintHeight - freqScaleHeight,
Chris@1281:                paintWidth, totalScaleHeight),
Chris@1281:          m_binScale == LogBins);
Chris@275: }
Chris@275: 
Chris@275: void
Chris@254: SpectrumLayer::getBiasCurve(BiasCurve &curve) const
Chris@254: {
Chris@254:     curve = m_biasCurve;
Chris@254: }
Chris@199: 
Chris@316: void
Chris@316: SpectrumLayer::toXml(QTextStream &stream,
Chris@316:                      QString indent, QString extraAttributes) const
Chris@220: {
Chris@316:     QString s = QString("windowSize=\"%1\" "
Chris@456:                         "windowHopLevel=\"%2\" "
Chris@456:                         "showPeaks=\"%3\" ")
Chris@220:         .arg(m_windowSize)
Chris@456:         .arg(m_windowHopLevel)
Chris@456:         .arg(m_showPeaks ? "true" : "false");
Chris@220: 
Chris@316:     SliceLayer::toXml(stream, indent, extraAttributes + " " + s);
Chris@220: }
Chris@220: 
Chris@220: void
Chris@220: SpectrumLayer::setProperties(const QXmlAttributes &attributes)
Chris@220: {
Chris@220:     SliceLayer::setProperties(attributes);
Chris@220: 
Chris@220:     bool ok = false;
Chris@220: 
Chris@805:     int windowSize = attributes.value("windowSize").toUInt(&ok);
Chris@220:     if (ok) setWindowSize(windowSize);
Chris@220: 
Chris@805:     int windowHopLevel = attributes.value("windowHopLevel").toUInt(&ok);
Chris@220:     if (ok) setWindowHopLevel(windowHopLevel);
Chris@456: 
Chris@456:     bool showPeaks = (attributes.value("showPeaks").trimmed() == "true");
Chris@456:     setShowPeaks(showPeaks);
Chris@220: }
Chris@220: 
Chris@220: