Chris@58: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@59:     Sonic Visualiser
Chris@59:     An audio file viewer and annotation editor.
Chris@59:     Centre for Digital Music, Queen Mary, University of London.
Chris@182:     This file copyright 2006 Chris Cannam and QMUL.
Chris@0:    
Chris@59:     This program is free software; you can redistribute it and/or
Chris@59:     modify it under the terms of the GNU General Public License as
Chris@59:     published by the Free Software Foundation; either version 2 of the
Chris@59:     License, or (at your option) any later version.  See the file
Chris@59:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "WaveformLayer.h"
Chris@0: 
Chris@0: #include "base/AudioLevel.h"
Chris@128: #include "view/View.h"
Chris@0: #include "base/Profiler.h"
Chris@167: #include "base/RangeMapper.h"
Chris@1147: #include "base/Strings.h"
Chris@1078: 
Chris@376: #include "ColourDatabase.h"
Chris@1078: #include "PaintAssistant.h"
Chris@1340: 
Chris@1340: #include "data/model/WaveformOversampler.h"
Chris@0: 
Chris@0: #include <QPainter>
Chris@0: #include <QPixmap>
Chris@316: #include <QTextStream>
Chris@0: 
Chris@0: #include <iostream>
Chris@0: #include <cmath>
Chris@0: 
Chris@1352: //#define DEBUG_WAVEFORM_PAINT 1
Chris@1338: //#define DEBUG_WAVEFORM_PAINT_BY_PIXEL 1
Chris@4: 
Chris@1333: using std::vector;
Chris@682: 
Chris@0: 
Chris@44: WaveformLayer::WaveformLayer() :
Chris@287:     SingleColourLayer(),
Chris@0:     m_gain(1.0f),
Chris@67:     m_autoNormalize(false),
Chris@0:     m_showMeans(true),
Chris@0:     m_channelMode(SeparateChannels),
Chris@0:     m_channel(-1),
Chris@0:     m_scale(LinearScale),
Chris@709:     m_middleLineHeight(0.5),
Chris@0:     m_aggressive(false),
Chris@1408:     m_cache(nullptr),
Chris@1325:     m_cacheValid(false)
Chris@0: {
Chris@0: }
Chris@0: 
Chris@0: WaveformLayer::~WaveformLayer()
Chris@0: {
Chris@0:     delete m_cache;
Chris@0: }
Chris@0: 
Chris@1470: const ZoomConstraint *
Chris@1470: WaveformLayer::getZoomConstraint() const
Chris@1470: {
Chris@1470:     auto model = ModelById::get(m_model);
Chris@1474:     if (model) return model->getZoomConstraint();
Chris@1470:     else return nullptr;
Chris@1470: }
Chris@1470: 
Chris@0: void
Chris@1470: WaveformLayer::setModel(ModelId modelId)
Chris@0: {
Chris@1470:     auto oldModel = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1470:     auto newModel = ModelById::getAs<RangeSummarisableTimeValueModel>(modelId);
Chris@1470: 
Chris@1471:     if (!modelId.isNone() && !newModel) {
Chris@1471:         throw std::logic_error("Not a RangeSummarisableTimeValueModel");
Chris@1470:     }
Chris@1470:     
Chris@1471:     if (m_model == modelId) return;
Chris@1471:     m_model = modelId;
Chris@1471: 
Chris@1471:     m_cacheValid = false;
Chris@1471:     
Chris@69:     bool channelsChanged = false;
Chris@69:     if (m_channel == -1) {
Chris@1470:         if (!oldModel) {
Chris@1470:             if (newModel) {
Chris@69:                 channelsChanged = true;
Chris@69:             }
Chris@69:         } else {
Chris@1470:             if (newModel &&
Chris@1470:                 oldModel->getChannelCount() != newModel->getChannelCount()) {
Chris@69:                 channelsChanged = true;
Chris@69:             }
Chris@69:         }
Chris@69:     }
Chris@69: 
Chris@1471:     if (newModel) {
Chris@1471:         connectSignals(m_model);
Chris@1471:     }
Chris@1471:         
Chris@0:     emit modelReplaced();
Chris@69: 
Chris@69:     if (channelsChanged) emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: Layer::PropertyList
Chris@0: WaveformLayer::getProperties() const
Chris@0: {
Chris@287:     PropertyList list = SingleColourLayer::getProperties();
Chris@87:     list.push_back("Scale");
Chris@87:     list.push_back("Gain");
Chris@87:     list.push_back("Normalize Visible Area");
Chris@68: 
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (model && model->getChannelCount() > 1 && m_channel == -1) {
Chris@87:         list.push_back("Channels");
Chris@68:     }
Chris@68: 
Chris@0:     return list;
Chris@0: }
Chris@0: 
Chris@87: QString
Chris@87: WaveformLayer::getPropertyLabel(const PropertyName &name) const
Chris@87: {
Chris@87:     if (name == "Scale") return tr("Scale");
Chris@87:     if (name == "Gain") return tr("Gain");
Chris@87:     if (name == "Normalize Visible Area") return tr("Normalize Visible Area");
Chris@87:     if (name == "Channels") return tr("Channels");
Chris@287:     return SingleColourLayer::getPropertyLabel(name);
Chris@87: }
Chris@87: 
Chris@335: QString
Chris@335: WaveformLayer::getPropertyIconName(const PropertyName &name) const
Chris@335: {
Chris@335:     if (name == "Normalize Visible Area") return "normalise";
Chris@335:     return "";
Chris@335: }
Chris@335: 
Chris@0: Layer::PropertyType
Chris@0: WaveformLayer::getPropertyType(const PropertyName &name) const
Chris@0: {
Chris@87:     if (name == "Gain") return RangeProperty;
Chris@87:     if (name == "Normalize Visible Area") return ToggleProperty;
Chris@87:     if (name == "Channels") return ValueProperty;
Chris@87:     if (name == "Scale") return ValueProperty;
Chris@287:     return SingleColourLayer::getPropertyType(name);
Chris@0: }
Chris@0: 
Chris@0: QString
Chris@0: WaveformLayer::getPropertyGroupName(const PropertyName &name) const
Chris@0: {
Chris@87:     if (name == "Gain" ||
Chris@87:         name == "Normalize Visible Area" ||
Chris@1266:         name == "Scale") return tr("Scale");
Chris@0:     return QString();
Chris@0: }
Chris@0: 
Chris@0: int
Chris@0: WaveformLayer::getPropertyRangeAndValue(const PropertyName &name,
Chris@216:                                         int *min, int *max, int *deflt) const
Chris@0: {
Chris@216:     int val = 0;
Chris@0: 
Chris@216:     int garbage0, garbage1, garbage2;
Chris@56:     if (!min) min = &garbage0;
Chris@56:     if (!max) max = &garbage1;
Chris@216:     if (!deflt) deflt = &garbage2;
Chris@10: 
Chris@87:     if (name == "Gain") {
Chris@0: 
Chris@1266:         *min = -50;
Chris@1266:         *max = 50;
Chris@216:         *deflt = 0;
Chris@0: 
Chris@1266:         val = int(lrint(log10(m_gain) * 20.0));
Chris@1266:         if (val < *min) val = *min;
Chris@1266:         if (val > *max) val = *max;
Chris@0: 
Chris@87:     } else if (name == "Normalize Visible Area") {
Chris@67: 
Chris@216:         val = (m_autoNormalize ? 1 : 0);
Chris@216:         *deflt = 0;
Chris@67: 
Chris@87:     } else if (name == "Channels") {
Chris@0: 
Chris@67:         *min = 0;
Chris@67:         *max = 2;
Chris@216:         *deflt = 0;
Chris@216:         if (m_channelMode == MixChannels) val = 1;
Chris@216:         else if (m_channelMode == MergeChannels) val = 2;
Chris@216:         else val = 0;
Chris@0: 
Chris@87:     } else if (name == "Scale") {
Chris@0: 
Chris@1266:         *min = 0;
Chris@1266:         *max = 2;
Chris@216:         *deflt = 0;
Chris@0: 
Chris@1266:         val = (int)m_scale;
Chris@0: 
Chris@0:     } else {
Chris@1266:         val = SingleColourLayer::getPropertyRangeAndValue(name, min, max, deflt);
Chris@0:     }
Chris@0: 
Chris@216:     return val;
Chris@0: }
Chris@0: 
Chris@0: QString
Chris@0: WaveformLayer::getPropertyValueLabel(const PropertyName &name,
Chris@1266:                                     int value) const
Chris@0: {
Chris@87:     if (name == "Scale") {
Chris@1266:         switch (value) {
Chris@1266:         default:
Chris@1266:         case 0: return tr("Linear");
Chris@1266:         case 1: return tr("Meter");
Chris@1266:         case 2: return tr("dB");
Chris@1266:         }
Chris@0:     }
Chris@87:     if (name == "Channels") {
Chris@67:         switch (value) {
Chris@67:         default:
Chris@67:         case 0: return tr("Separate");
Chris@67:         case 1: return tr("Mean");
Chris@67:         case 2: return tr("Butterfly");
Chris@67:         }
Chris@67:     }
Chris@287:     return SingleColourLayer::getPropertyValueLabel(name, value);
Chris@0: }
Chris@0: 
Chris@167: RangeMapper *
Chris@167: WaveformLayer::getNewPropertyRangeMapper(const PropertyName &name) const
Chris@167: {
Chris@167:     if (name == "Gain") {
Chris@167:         return new LinearRangeMapper(-50, 50, -25, 25, tr("dB"));
Chris@167:     }
Chris@1408:     return nullptr;
Chris@167: }
Chris@167: 
Chris@0: void
Chris@0: WaveformLayer::setProperty(const PropertyName &name, int value)
Chris@0: {
Chris@87:     if (name == "Gain") {
Chris@1266:         setGain(float(pow(10, float(value)/20.0)));
Chris@87:     } else if (name == "Normalize Visible Area") {
Chris@67:         setAutoNormalize(value ? true : false);
Chris@87:     } else if (name == "Channels") {
Chris@67:         if (value == 1) setChannelMode(MixChannels);
Chris@67:         else if (value == 2) setChannelMode(MergeChannels);
Chris@67:         else setChannelMode(SeparateChannels);
Chris@87:     } else if (name == "Scale") {
Chris@1266:         switch (value) {
Chris@1266:         default:
Chris@1266:         case 0: setScale(LinearScale); break;
Chris@1266:         case 1: setScale(MeterScale); break;
Chris@1266:         case 2: setScale(dBScale); break;
Chris@1266:         }
Chris@287:     } else {
Chris@287:         SingleColourLayer::setProperty(name, value);
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@67: WaveformLayer::setGain(float gain)
Chris@0: {
Chris@0:     if (m_gain == gain) return;
Chris@0:     m_gain = gain;
Chris@0:     m_cacheValid = false;
Chris@0:     emit layerParametersChanged();
Chris@133:     emit verticalZoomChanged();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@67: WaveformLayer::setAutoNormalize(bool autoNormalize)
Chris@67: {
Chris@67:     if (m_autoNormalize == autoNormalize) return;
Chris@67:     m_autoNormalize = autoNormalize;
Chris@67:     m_cacheValid = false;
Chris@67:     emit layerParametersChanged();
Chris@67: }
Chris@67: 
Chris@67: void
Chris@0: WaveformLayer::setShowMeans(bool showMeans)
Chris@0: {
Chris@0:     if (m_showMeans == showMeans) return;
Chris@0:     m_showMeans = showMeans;
Chris@0:     m_cacheValid = false;
Chris@0:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: WaveformLayer::setChannelMode(ChannelMode channelMode)
Chris@0: {
Chris@0:     if (m_channelMode == channelMode) return;
Chris@0:     m_channelMode = channelMode;
Chris@0:     m_cacheValid = false;
Chris@0:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: WaveformLayer::setChannel(int channel)
Chris@0: {
Chris@587: //    SVDEBUG << "WaveformLayer::setChannel(" << channel << ")" << endl;
Chris@0: 
Chris@0:     if (m_channel == channel) return;
Chris@0:     m_channel = channel;
Chris@0:     m_cacheValid = false;
Chris@0:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: WaveformLayer::setScale(Scale scale)
Chris@0: {
Chris@0:     if (m_scale == scale) return;
Chris@0:     m_scale = scale;
Chris@0:     m_cacheValid = false;
Chris@0:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@908: WaveformLayer::setMiddleLineHeight(double height)
Chris@709: {
Chris@709:     if (m_middleLineHeight == height) return;
Chris@709:     m_middleLineHeight = height;
Chris@709:     m_cacheValid = false;
Chris@709:     emit layerParametersChanged();
Chris@709: }
Chris@709: 
Chris@709: void
Chris@0: WaveformLayer::setAggressiveCacheing(bool aggressive)
Chris@0: {
Chris@0:     if (m_aggressive == aggressive) return;
Chris@0:     m_aggressive = aggressive;
Chris@0:     m_cacheValid = false;
Chris@0:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: int
Chris@918: WaveformLayer::getCompletion(LayerGeometryProvider *) const
Chris@0: {
Chris@0:     int completion = 100;
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model || !model->isOK()) return completion;
Chris@1474:     if (model->isReady(&completion)) return 100;
Chris@0:     return completion;
Chris@0: }
Chris@0: 
Chris@79: bool
Chris@908: WaveformLayer::getValueExtents(double &min, double &max,
Chris@248:                                bool &, QString &unit) const
Chris@79: {
Chris@79:     if (m_scale == LinearScale) {
Chris@79:         min = 0.0;
Chris@79:         max = 1.0;
Chris@79:         unit = "V";
Chris@79:     } else if (m_scale == MeterScale) {
Chris@79:         return false; //!!!
Chris@79:     } else {
Chris@79:         min = AudioLevel::multiplier_to_dB(0.0);
Chris@79:         max = AudioLevel::multiplier_to_dB(1.0);
Chris@79:         unit = "dB";
Chris@79:     }
Chris@79:     return true;
Chris@79: }
Chris@79: 
Chris@1367: double
Chris@908: WaveformLayer::dBscale(double sample, int m) const
Chris@0: {
Chris@67:     if (sample < 0.0) return dBscale(-sample, m);
Chris@908:     double dB = AudioLevel::multiplier_to_dB(sample);
Chris@0:     if (dB < -50.0) return 0;
Chris@0:     if (dB > 0.0) return m;
Chris@1367:     return ((dB + 50.0) * m) / 50.0;
Chris@0: }
Chris@0: 
Chris@805: int
Chris@805: WaveformLayer::getChannelArrangement(int &min, int &max,
Chris@67:                                      bool &merging, bool &mixing)
Chris@0:     const
Chris@0: {
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model || !model->isOK()) return 0;
Chris@0: 
Chris@1474:     int channels = model->getChannelCount();
Chris@0:     if (channels == 0) return 0;
Chris@0: 
Chris@805:     int rawChannels = channels;
Chris@0: 
Chris@0:     if (m_channel == -1) {
Chris@1266:         min = 0;
Chris@1266:         if (m_channelMode == MergeChannels ||
Chris@67:             m_channelMode == MixChannels) {
Chris@1266:             max = 0;
Chris@1266:             channels = 1;
Chris@1266:         } else {
Chris@1266:             max = channels - 1;
Chris@1266:         }
Chris@0:     } else {
Chris@1266:         min = m_channel;
Chris@1266:         max = m_channel;
Chris@1266:         rawChannels = 1;
Chris@1266:         channels = 1;
Chris@0:     }
Chris@0: 
Chris@1523:     // "Merging" -> "butterfly mode" - use +ve side of "waveform" for
Chris@1523:     // channel 0 and -ve side for channel 1. If we only have one
Chris@1523:     // channel, we still do this but just duplicate channel 0 onto
Chris@1523:     // channel 1 - this is the only way to get a classic-looking
Chris@1523:     // waveform with meter or db scale from a single-channel file,
Chris@1523:     // although it isn't currently exposed in the SV UI
Chris@1523:     merging = (m_channelMode == MergeChannels);
Chris@1523: 
Chris@1523:     // "Mixing" -> produce a single waveform from the mean of the
Chris@1523:     // channels. Unlike merging, this really does only make sense if
Chris@1523:     // we have >1 channel.
Chris@67:     mixing = (m_channelMode == MixChannels && rawChannels > 1);
Chris@0: 
Chris@587: //    SVDEBUG << "WaveformLayer::getChannelArrangement: min " << min << ", max " << max << ", merging " << merging << ", channels " << channels << endl;
Chris@0: 
Chris@0:     return channels;
Chris@0: }    
Chris@0: 
Chris@67: bool
Chris@918: WaveformLayer::isLayerScrollable(const LayerGeometryProvider *) const
Chris@67: {
Chris@67:     return !m_autoNormalize;
Chris@67: }
Chris@67: 
Chris@68: static float meterdbs[] = { -40, -30, -20, -15, -10,
Chris@68:                             -5, -3, -2, -1, -0.5, 0 };
Chris@68: 
Chris@365: bool
Chris@1336: WaveformLayer::getSourceFramesForX(LayerGeometryProvider *v,
Chris@1336:                                    int x, int modelZoomLevel,
Chris@908:                                    sv_frame_t &f0, sv_frame_t &f1) const
Chris@365: {
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model) return false;
Chris@1474:     
Chris@908:     sv_frame_t viewFrame = v->getFrameForX(x);
Chris@365:     if (viewFrame < 0) {
Chris@365:         f0 = 0;
Chris@365:         f1 = 0;
Chris@365:         return false;
Chris@365:     }
Chris@365: 
Chris@365:     f0 = viewFrame;
Chris@365:     f0 = f0 / modelZoomLevel;
Chris@365:     f0 = f0 * modelZoomLevel;
Chris@365: 
Chris@1341:     if (v->getZoomLevel().zone == ZoomLevel::PixelsPerFrame) {
Chris@1341:         f1 = f0 + 1;
Chris@1341:     } else {
Chris@1341:         viewFrame = v->getFrameForX(x + 1);
Chris@1341:         f1 = viewFrame;
Chris@1341:         f1 = f1 / modelZoomLevel;
Chris@1341:         f1 = f1 * modelZoomLevel;
Chris@1341:     }
Chris@365:     
Chris@1474:     return (f0 < model->getEndFrame());
Chris@365: }
Chris@365: 
Chris@365: float
Chris@918: WaveformLayer::getNormalizeGain(LayerGeometryProvider *v, int channel) const
Chris@365: {
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model) return 0.f;
Chris@1474:     
Chris@908:     sv_frame_t startFrame = v->getStartFrame();
Chris@908:     sv_frame_t endFrame = v->getEndFrame();
Chris@365: 
Chris@1474:     sv_frame_t modelStart = model->getStartFrame();
Chris@1474:     sv_frame_t modelEnd = model->getEndFrame();
Chris@365:     
Chris@908:     sv_frame_t rangeStart, rangeEnd;
Chris@365:             
Chris@365:     if (startFrame < modelStart) rangeStart = modelStart;
Chris@365:     else rangeStart = startFrame;
Chris@365: 
Chris@365:     if (endFrame < 0) rangeEnd = 0;
Chris@365:     else if (endFrame > modelEnd) rangeEnd = modelEnd;
Chris@365:     else rangeEnd = endFrame;
Chris@365: 
Chris@365:     if (rangeEnd < rangeStart) rangeEnd = rangeStart;
Chris@365: 
Chris@365:     RangeSummarisableTimeValueModel::Range range =
Chris@1474:         model->getSummary(channel, rangeStart, rangeEnd - rangeStart);
Chris@365: 
Chris@805:     int minChannel = 0, maxChannel = 0;
Chris@365:     bool mergingChannels = false, mixingChannels = false;
Chris@365: 
Chris@859:     (void)getChannelArrangement(minChannel, maxChannel,
Chris@859:                                 mergingChannels, mixingChannels);
Chris@365: 
Chris@365:     if (mergingChannels || mixingChannels) {
Chris@1523:         if (model->getChannelCount() > 1) {
Chris@1523:             RangeSummarisableTimeValueModel::Range otherRange =
Chris@1523:                 model->getSummary(1, rangeStart, rangeEnd - rangeStart);
Chris@1523:             range.setMax(std::max(range.max(), otherRange.max()));
Chris@1523:             range.setMin(std::min(range.min(), otherRange.min()));
Chris@1523:             range.setAbsmean(std::min(range.absmean(), otherRange.absmean()));
Chris@1523:         }
Chris@365:     }
Chris@365: 
Chris@908:     return float(1.0 / std::max(fabs(range.max()), fabs(range.min())));
Chris@365: }
Chris@365: 
Chris@0: void
Chris@916: WaveformLayer::paint(LayerGeometryProvider *v, QPainter &viewPainter, QRect rect) const
Chris@0: {
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model || !model->isOK()) {
Chris@1266:         return;
Chris@0:     }
Chris@0:   
Chris@1325:     ZoomLevel zoomLevel = v->getZoomLevel();
Chris@0: 
Chris@2: #ifdef DEBUG_WAVEFORM_PAINT
Chris@0:     Profiler profiler("WaveformLayer::paint", true);
Chris@1338:     SVCERR << "WaveformLayer::paint (" << rect.x() << "," << rect.y()
Chris@1266:               << ") [" << rect.width() << "x" << rect.height() << "]: zoom " << zoomLevel << endl;
Chris@2: #endif
Chris@0: 
Chris@805:     int channels = 0, minChannel = 0, maxChannel = 0;
Chris@67:     bool mergingChannels = false, mixingChannels = false;
Chris@0: 
Chris@67:     channels = getChannelArrangement(minChannel, maxChannel,
Chris@67:                                      mergingChannels, mixingChannels);
Chris@0:     if (channels == 0) return;
Chris@0: 
Chris@915:     int w = v->getPaintWidth();
Chris@915:     int h = v->getPaintHeight();
Chris@0: 
Chris@0:     QPainter *paint;
Chris@0: 
Chris@0:     if (m_aggressive) {
Chris@0: 
Chris@214: #ifdef DEBUG_WAVEFORM_PAINT
Chris@1338:         SVCERR << "WaveformLayer::paint: aggressive is true" << endl;
Chris@214: #endif
Chris@214: 
Chris@1325:         using namespace std::rel_ops;
Chris@1325:         
Chris@1266:         if (m_cacheValid && (zoomLevel != m_cacheZoomLevel)) {
Chris@1266:             m_cacheValid = false;
Chris@1266:         }
Chris@0: 
Chris@1266:         if (!m_cache || m_cache->width() != w || m_cache->height() != h) {
Chris@214: #ifdef DEBUG_WAVEFORM_PAINT
Chris@214:             if (m_cache) {
Chris@1338:                 SVCERR << "WaveformLayer::paint: cache size " << m_cache->width() << "x" << m_cache->height() << " differs from view size " << w << "x" << h << ": regenerating aggressive cache" << endl;
Chris@214:             }
Chris@214: #endif
Chris@1266:             delete m_cache;
Chris@1266:             m_cache = new QPixmap(w, h);
Chris@214:             m_cacheValid = false;
Chris@1266:         }
Chris@214: 
Chris@1266:         if (m_cacheValid) {
Chris@1266:             viewPainter.drawPixmap(rect, *m_cache, rect);
Chris@1266:             return;
Chris@1266:         }
Chris@0: 
Chris@1266:         paint = new QPainter(m_cache);
Chris@0: 
Chris@1266:         paint->setPen(Qt::NoPen);
Chris@1266:         paint->setBrush(getBackgroundQColor(v));
Chris@1266:         paint->drawRect(rect);
Chris@0: 
Chris@1266:         paint->setPen(getForegroundQColor(v));
Chris@1266:         paint->setBrush(Qt::NoBrush);
Chris@0: 
Chris@0:     } else {
Chris@1266:         paint = &viewPainter;
Chris@0:     }
Chris@0: 
Chris@1367:     paint->setRenderHint(QPainter::Antialiasing, true);
Chris@28: 
Chris@709:     if (m_middleLineHeight != 0.5) {
Chris@709:         paint->save();
Chris@908:         double space = m_middleLineHeight * 2;
Chris@709:         if (space > 1.0) space = 2.0 - space;
Chris@908:         double yt = h * (m_middleLineHeight - space/2);
Chris@709:         paint->translate(QPointF(0, yt));
Chris@709:         paint->scale(1.0, space);
Chris@709:     }
Chris@709: 
Chris@0:     int x0 = 0, x1 = w - 1;
Chris@0: 
Chris@0:     x0 = rect.left();
Chris@0:     x1 = rect.right();
Chris@0: 
Chris@1334:     if (x0 > 0) {
Chris@1334:         rect.adjust(-1, 0, 0, 0);
Chris@1334:         x0 = rect.left();
Chris@1334:     }
Chris@1334: 
Chris@1334:     if (x1 < w) {
Chris@1334:         rect.adjust(0, 0, 1, 0);
Chris@1334:         x1 = rect.right();
Chris@1334:     }
Chris@28: 
Chris@365:     // Our zoom level may differ from that at which the underlying
Chris@365:     // model has its blocks.
Chris@302: 
Chris@365:     // Each pixel within our visible range must always draw from
Chris@365:     // exactly the same set of underlying audio frames, no matter what
Chris@365:     // the range being drawn is.  And that set of underlying frames
Chris@365:     // must remain the same when we scroll one or more pixels left or
Chris@365:     // right.
Chris@1325: 
Chris@1325:     int desiredBlockSize = 1;
Chris@1325:     if (zoomLevel.zone == ZoomLevel::FramesPerPixel) {
Chris@1325:         desiredBlockSize = zoomLevel.level;
Chris@1325:     }
Chris@1474:     int blockSize = model->getSummaryBlockSize(desiredBlockSize);
Chris@365: 
Chris@908:     sv_frame_t frame0;
Chris@908:     sv_frame_t frame1;
Chris@908:     sv_frame_t spare;
Chris@365: 
Chris@1325:     getSourceFramesForX(v, x0, blockSize, frame0, spare);
Chris@1325:     getSourceFramesForX(v, x1, blockSize, spare, frame1);
Chris@365:     
Chris@4: #ifdef DEBUG_WAVEFORM_PAINT
Chris@1338:     SVCERR << "Painting waveform from " << frame0 << " to " << frame1 << " (" << (x1-x0+1) << " pixels at zoom " << zoomLevel << " and model zoom " << blockSize << ")" <<  endl;
Chris@4: #endif
Chris@0: 
Chris@1338:     m_effectiveGains.clear();
Chris@805:     while ((int)m_effectiveGains.size() <= maxChannel) {
Chris@67:         m_effectiveGains.push_back(m_gain);
Chris@67:     }
Chris@1337:     if (m_autoNormalize) {
Chris@1337:         for (int ch = minChannel; ch <= maxChannel; ++ch) {
Chris@1337:             m_effectiveGains[ch] = getNormalizeGain(v, ch);
Chris@1337:         }
Chris@1336:     }
Chris@67: 
Chris@1338:     RangeVec ranges;
Chris@1338: 
Chris@1336:     if (v->getZoomLevel().zone == ZoomLevel::FramesPerPixel) {
Chris@1338:         getSummaryRanges(minChannel, maxChannel,
Chris@1338:                          mixingChannels || mergingChannels,
Chris@1338:                          frame0, frame1,
Chris@1338:                          blockSize, ranges);
Chris@1338:     } else {
Chris@1338:         getOversampledRanges(minChannel, maxChannel,
Chris@1338:                              mixingChannels || mergingChannels,
Chris@1338:                              frame0, frame1,
Chris@1338:                              v->getZoomLevel().level, ranges);
Chris@1338:     }
Chris@1333: 
Chris@1343:     if (!ranges.empty()) {
Chris@1343:         for (int ch = minChannel; ch <= maxChannel; ++ch) {
Chris@1343:             paintChannel(v, paint, rect, ch, ranges, blockSize,
Chris@1343:                          frame0, frame1);
Chris@1343:         }
Chris@1333:     }
Chris@1333:     
Chris@709:     if (m_middleLineHeight != 0.5) {
Chris@709:         paint->restore();
Chris@709:     }
Chris@709: 
Chris@0:     if (m_aggressive) {
Chris@1474:         if (model->isReady() && rect == v->getPaintRect()) {
Chris@1266:             m_cacheValid = true;
Chris@1266:             m_cacheZoomLevel = zoomLevel;
Chris@1266:         }
Chris@1266:         paint->end();
Chris@1266:         delete paint;
Chris@1266:         viewPainter.drawPixmap(rect, *m_cache, rect);
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@1332: void
Chris@1338: WaveformLayer::getSummaryRanges(int minChannel, int maxChannel,
Chris@1338:                                 bool mixingOrMerging,
Chris@1338:                                 sv_frame_t frame0, sv_frame_t frame1,
Chris@1338:                                 int blockSize, RangeVec &ranges)
Chris@1338:     const
Chris@1338: {
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model) return;
Chris@1474:     
Chris@1338:     for (int ch = minChannel; ch <= maxChannel; ++ch) {
Chris@1338:         ranges.push_back({});
Chris@1474:         model->getSummaries(ch, frame0, frame1 - frame0,
Chris@1338:                               ranges[ch - minChannel], blockSize);
Chris@1338: #ifdef DEBUG_WAVEFORM_PAINT
Chris@1338:             SVCERR << "channel " << ch << ": " << ranges[ch - minChannel].size() << " ranges from " << frame0 << " to " << frame1 << " at zoom level " << blockSize << endl;
Chris@1338: #endif
Chris@1338:     }
Chris@1338:     
Chris@1338:     if (mixingOrMerging) {
Chris@1338:         if (minChannel != 0 || maxChannel != 0) {
Chris@1366:             throw std::logic_error("Internal error: min & max channels should be 0 when merging or mixing all channels");
Chris@1474:         } else if (model->getChannelCount() > 1) {
Chris@1338:             ranges.push_back({});
Chris@1474:             model->getSummaries
Chris@1338:                 (1, frame0, frame1 - frame0, ranges[1], blockSize);
Chris@1523:         } else {
Chris@1523:             ranges.push_back(ranges[0]);
Chris@1338:         }
Chris@1338:     }
Chris@1338: }
Chris@1338: 
Chris@1338: void
Chris@1338: WaveformLayer::getOversampledRanges(int minChannel, int maxChannel,
Chris@1366:                                     bool mixingOrMerging,
Chris@1338:                                     sv_frame_t frame0, sv_frame_t frame1,
Chris@1338:                                     int oversampleBy, RangeVec &ranges)
Chris@1338:     const
Chris@1338: {
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model) return;
Chris@1474:     
Chris@1366:     if (mixingOrMerging) {
Chris@1366:         if (minChannel != 0 || maxChannel != 0) {
Chris@1366:             throw std::logic_error("Internal error: min & max channels should be 0 when merging or mixing all channels");
Chris@1366:         }
Chris@1474:         if (model->getChannelCount() > 1) {
Chris@1366:             // call back on self for the individual channels with
Chris@1366:             // mixingOrMerging false
Chris@1366:             getOversampledRanges
Chris@1366:                 (0, 1, false, frame0, frame1, oversampleBy, ranges);
Chris@1366:             return;
Chris@1523:         } else {
Chris@1523:             // call back on self for a single channel, then duplicate
Chris@1523:             getOversampledRanges
Chris@1523:                 (0, 0, false, frame0, frame1, oversampleBy, ranges);
Chris@1523:             ranges.push_back(ranges[0]);
Chris@1523:             return;
Chris@1366:         }
Chris@1366:     }
Chris@1366:     
Chris@1338:     // These frame values, tail length, etc variables are at the model
Chris@1338:     // sample rate, not the oversampled rate
Chris@1338: 
Chris@1338:     sv_frame_t tail = 16;
Chris@1474:     sv_frame_t startFrame = model->getStartFrame();
Chris@1474:     sv_frame_t endFrame = model->getEndFrame();
Chris@1338: 
Chris@1338:     sv_frame_t rf0 = frame0 - tail;
Chris@1338:     if (rf0 < startFrame) {
Chris@1338:         rf0 = 0;
Chris@1338:     }
Chris@1338: 
Chris@1338:     sv_frame_t rf1 = frame1 + tail;
Chris@1338:     if (rf1 >= endFrame) {
Chris@1338:         rf1 = endFrame - 1;
Chris@1338:     }
Chris@1338:     if (rf1 <= rf0) {
Chris@1338:         SVCERR << "WARNING: getOversampledRanges: rf1 (" << rf1 << ") <= rf0 ("
Chris@1338:                << rf0 << ")" << endl;
Chris@1338:         return;
Chris@1338:     }
Chris@1338:     
Chris@1338:     for (int ch = minChannel; ch <= maxChannel; ++ch) {
Chris@1339:         floatvec_t oversampled = WaveformOversampler::getOversampledData
Chris@1474:             (*model, ch, frame0, frame1 - frame0, oversampleBy);
Chris@1338:         RangeSummarisableTimeValueModel::RangeBlock rr;
Chris@1339:         for (float v: oversampled) {
Chris@1338:             RangeSummarisableTimeValueModel::Range r;
Chris@1339:             r.sample(v);
Chris@1338:             rr.push_back(r);
Chris@1338:         }
Chris@1338:         ranges.push_back(rr);
Chris@1338: 
Chris@1338: #ifdef DEBUG_WAVEFORM_PAINT
Chris@1338:         SVCERR << "getOversampledRanges: " << frame0 << " -> " << frame1
Chris@1338:                << " (" << frame1 - frame0 << "-frame range) at ratio "
Chris@1338:                << oversampleBy << " with tail " << tail
Chris@1338:                << " -> got " << oversampled.size()
Chris@1338:                << " oversampled values for channel " << ch
Chris@1338:                << ", from which returning " << rr.size() << " ranges" << endl;
Chris@1338: #endif    
Chris@1338:     }
Chris@1338:     
Chris@1338:     return;
Chris@1338: }
Chris@1338: 
Chris@1338: void
Chris@1338: WaveformLayer::paintChannel(LayerGeometryProvider *v,
Chris@1338:                             QPainter *paint,
Chris@1338:                             QRect rect, int ch,
Chris@1338:                             const RangeVec &ranges,
Chris@1338:                             int blockSize,
Chris@1352:                             sv_frame_t frame0,
Chris@1352:                             sv_frame_t frame1)
Chris@1332:     const
Chris@1332: {
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model) return;
Chris@1474:     
Chris@1334:     int x0 = rect.left();
Chris@1334:     int y0 = rect.top();
Chris@1334: 
Chris@1334:     int x1 = rect.right();
Chris@1334:     int y1 = rect.bottom();
Chris@1334: 
Chris@1332:     int h = v->getPaintHeight();
Chris@1332: 
Chris@1332:     int channels = 0, minChannel = 0, maxChannel = 0;
Chris@1332:     bool mergingChannels = false, mixingChannels = false;
Chris@1332: 
Chris@1332:     channels = getChannelArrangement(minChannel, maxChannel,
Chris@1332:                                      mergingChannels, mixingChannels);
Chris@1332:     if (channels == 0) return;
Chris@1332: 
Chris@1332:     QColor baseColour = getBaseQColor();
Chris@1332:     QColor midColour = baseColour;
Chris@1367:     
Chris@1332:     if (midColour == Qt::black) {
Chris@1332:         midColour = Qt::gray;
Chris@1332:     } else if (v->hasLightBackground()) {
Chris@1474:         midColour = midColour.lighter(150);
Chris@1332:     } else {
Chris@1474:         midColour = midColour.lighter(50);
Chris@1332:     }
Chris@1332: 
Chris@1332:     double gain = m_effectiveGains[ch];
Chris@1332: 
Chris@1332:     int m = (h / channels) / 2;
Chris@1332:     int my = m + (((ch - minChannel) * h) / channels);
Chris@1332: 
Chris@1332: #ifdef DEBUG_WAVEFORM_PAINT        
Chris@1338:     SVCERR << "ch = " << ch << ", channels = " << channels << ", m = " << m << ", my = " << my << ", h = " << h << endl;
Chris@1332: #endif
Chris@1332: 
Chris@1332:     if (my - m > y1 || my + m < y0) return;
Chris@1332: 
Chris@1332:     if ((m_scale == dBScale || m_scale == MeterScale) &&
Chris@1332:         m_channelMode != MergeChannels) {
Chris@1332:         m = (h / channels);
Chris@1332:         my = m + (((ch - minChannel) * h) / channels);
Chris@1332:     }
Chris@1332: 
Chris@1367:     // Horizontal axis along middle
Chris@1367:     paint->setPen(QPen(midColour, 0));
Chris@1393:     paint->drawLine(QPointF(x0, my + 0.5), QPointF(x1, my + 0.5));
Chris@1332: 
Chris@1335:     paintChannelScaleGuides(v, paint, rect, ch);
Chris@1332:   
Chris@1333:     int rangeix = ch - minChannel;
Chris@1338: 
Chris@1338: #ifdef DEBUG_WAVEFORM_PAINT
Chris@1338:     SVCERR << "paint channel " << ch << ": frame0 = " << frame0 << ", frame1 = " << frame1 << ", blockSize = " << blockSize << ", have " << ranges.size() << " range blocks of which ours is index " << rangeix << " with " << ranges[rangeix].size() << " ranges in it" << endl;
Chris@1352: #else
Chris@1352:     (void)frame1; // not actually used
Chris@1338: #endif
Chris@1338: 
Chris@1367:     QPainterPath waveformPath;
Chris@1367:     QPainterPath meanPath;
Chris@1367:     QPainterPath clipPath;
Chris@1367:     vector<QPointF> individualSamplePoints;
Chris@1367: 
Chris@1367:     bool firstPoint = true;
Chris@1372:     double prevRangeBottom = 0, prevRangeTop = 0;
Chris@1367:     
Chris@1332:     for (int x = x0; x <= x1; ++x) {
Chris@1332: 
Chris@1332:         sv_frame_t f0, f1;
Chris@1338:         sv_frame_t i0, i1;
Chris@1338: 
Chris@1338:         bool showIndividualSample = false;
Chris@1338:         
Chris@1338:         if (v->getZoomLevel().zone == ZoomLevel::FramesPerPixel) {
Chris@1338:             if (!getSourceFramesForX(v, x, blockSize, f0, f1)) {
Chris@1338:                 continue;
Chris@1338:             }
Chris@1338:             f1 = f1 - 1;
Chris@1338:             i0 = (f0 - frame0) / blockSize;
Chris@1338:             i1 = (f1 - frame0) / blockSize;
Chris@1338:         } else {
Chris@1338:             int oversampleBy = v->getZoomLevel().level;
Chris@1338:             f0 = f1 = v->getFrameForX(x);
Chris@1338:             int xf0 = v->getXForFrame(f0);
Chris@1338:             showIndividualSample = (x == xf0);
Chris@1338:             i0 = i1 = (f0 - frame0) * oversampleBy + (x - xf0);
Chris@1338:         }
Chris@1332: 
Chris@1332:         if (f0 < frame0) {
Chris@1375:             // Not an error, this simply occurs when painting the
Chris@1375:             // start of a signal in PixelsPerFrame zone
Chris@1332:             continue;
Chris@1332:         }
Chris@1332: 
Chris@1338: #ifdef DEBUG_WAVEFORM_PAINT_BY_PIXEL
Chris@1338:         SVCERR << "WaveformLayer::paint: pixel " << x << ": i0 " << i0 << " (f " << f0 << "), i1 " << i1 << " (f " << f1 << ")" << endl;
Chris@1332: #endif
Chris@1332: 
Chris@1332:         if (i1 > i0 + 1) {
Chris@1338:             SVCERR << "WaveformLayer::paint: ERROR: i1 " << i1 << " > i0 " << i0 << " plus one (zoom = " << v->getZoomLevel() << ", model zoom = " << blockSize << ")" << endl;
Chris@1332:         }
Chris@1332: 
Chris@1333:         const auto &r = ranges[rangeix];
Chris@1333:         RangeSummarisableTimeValueModel::Range range;
Chris@1333:             
Chris@1333:         if (in_range_for(r, i0)) {
Chris@1332: 
Chris@1333:             range = r[i0];
Chris@1332: 
Chris@1333:             if (i1 > i0 && in_range_for(r, i1)) {
Chris@1333:                 range.setMax(std::max(range.max(), r[i1].max()));
Chris@1333:                 range.setMin(std::min(range.min(), r[i1].min()));
Chris@1333:                 range.setAbsmean((range.absmean() + r[i1].absmean()) / 2);
Chris@1332:             }
Chris@1332: 
Chris@1332:         } else {
Chris@1332: #ifdef DEBUG_WAVEFORM_PAINT
Chris@1338:             SVCERR << "No (or not enough) ranges for index i0 = " << i0 << " (there are " << r.size() << " range(s))" << endl;
Chris@1332: #endif
Chris@1332:             continue;
Chris@1332:         }
Chris@1332: 
Chris@1367:         double rangeBottom = 0, rangeTop = 0, meanBottom = 0, meanTop = 0;
Chris@1332: 
Chris@1333:         if (mergingChannels && ranges.size() > 1) {
Chris@1332: 
Chris@1333:             const auto &other = ranges[1];
Chris@1333:             
Chris@1333:             if (in_range_for(other, i0)) {
Chris@1332: 
Chris@1332:                 range.setMax(fabsf(range.max()));
Chris@1333:                 range.setMin(-fabsf(other[i0].max()));
Chris@1332:                 range.setAbsmean
Chris@1333:                     ((range.absmean() + other[i0].absmean()) / 2);
Chris@1332: 
Chris@1333:                 if (i1 > i0 && in_range_for(other, i1)) {
Chris@1332:                     // let's not concern ourselves about the mean
Chris@1333:                     range.setMin(std::min(range.min(),
Chris@1333:                                           -fabsf(other[i1].max())));
Chris@1332:                 }
Chris@1332:             }
Chris@1332: 
Chris@1333:         } else if (mixingChannels && ranges.size() > 1) {
Chris@1332: 
Chris@1333:             const auto &other = ranges[1];
Chris@1333:             
Chris@1333:             if (in_range_for(other, i0)) {
Chris@1332: 
Chris@1333:                 range.setMax((range.max() + other[i0].max()) / 2);
Chris@1333:                 range.setMin((range.min() + other[i0].min()) / 2);
Chris@1333:                 range.setAbsmean((range.absmean() + other[i0].absmean()) / 2);
Chris@1332:             }
Chris@1332:         }
Chris@1332: 
Chris@1332:         switch (m_scale) {
Chris@1332: 
Chris@1332:         case LinearScale:
Chris@1367:             rangeBottom = range.min() * gain * m;
Chris@1367:             rangeTop    = range.max() * gain * m;
Chris@1367:             meanBottom  = range.absmean() * gain * (-m);
Chris@1367:             meanTop     = range.absmean() * gain * m;
Chris@1332:             break;
Chris@1332: 
Chris@1332:         case dBScale:
Chris@1332:             if (!mergingChannels) {
Chris@1367:                 double db0 = dBscale(range.min() * gain, m);
Chris@1367:                 double db1 = dBscale(range.max() * gain, m);
Chris@1367:                 rangeTop = std::max(db0, db1);
Chris@1367:                 meanTop = std::min(db0, db1);
Chris@1332:                 if (mixingChannels) rangeBottom = meanTop;
Chris@1332:                 else rangeBottom = dBscale(range.absmean() * gain, m);
Chris@1367:                 meanBottom = rangeBottom;
Chris@1332:             } else {
Chris@1367:                 rangeBottom = -dBscale(range.min() * gain, m);
Chris@1367:                 rangeTop = dBscale(range.max() * gain, m);
Chris@1367:                 meanBottom = -dBscale(range.absmean() * gain, m);
Chris@1367:                 meanTop = dBscale(range.absmean() * gain, m);
Chris@1332:             }
Chris@1332:             break;
Chris@1332: 
Chris@1332:         case MeterScale:
Chris@1332:             if (!mergingChannels) {
Chris@1405:                 double r0 = std::abs(AudioLevel::multiplier_to_preview
Chris@1367:                                  (range.min() * gain, m));
Chris@1405:                 double r1 = std::abs(AudioLevel::multiplier_to_preview
Chris@1367:                                  (range.max() * gain, m));
Chris@1367:                 rangeTop = std::max(r0, r1);
Chris@1367:                 meanTop = std::min(r0, r1);
Chris@1332:                 if (mixingChannels) rangeBottom = meanTop;
Chris@1367:                 else rangeBottom = AudioLevel::multiplier_to_preview
Chris@1367:                          (range.absmean() * gain, m);
Chris@1332:                 meanBottom  = rangeBottom;
Chris@1332:             } else {
Chris@1367:                 rangeBottom = -AudioLevel::multiplier_to_preview
Chris@1367:                     (range.min() * gain, m);
Chris@1367:                 rangeTop = AudioLevel::multiplier_to_preview
Chris@1367:                     (range.max() * gain, m);
Chris@1367:                 meanBottom = -AudioLevel::multiplier_to_preview
Chris@1367:                     (range.absmean() * gain, m);
Chris@1367:                 meanTop = AudioLevel::multiplier_to_preview
Chris@1367:                     (range.absmean() * gain, m);
Chris@1332:             }
Chris@1332:             break;
Chris@1332:         }
Chris@1332: 
Chris@1367:         rangeBottom = my - rangeBottom;
Chris@1367:         rangeTop = my - rangeTop;
Chris@1367:         meanBottom = my - meanBottom;
Chris@1367:         meanTop = my - meanTop;
Chris@1332: 
Chris@1332:         bool clipped = false;
Chris@1332: 
Chris@1332:         if (rangeTop < my - m) { rangeTop = my - m; }
Chris@1332:         if (rangeTop > my + m) { rangeTop = my + m; }
Chris@1332:         if (rangeBottom < my - m) { rangeBottom = my - m; }
Chris@1332:         if (rangeBottom > my + m) { rangeBottom = my + m; }
Chris@1332: 
Chris@1367:         if (range.max() <= -1.0 || range.max() >= 1.0) {
Chris@1367:             clipped = true;
Chris@1367:         }
Chris@1332:             
Chris@1367:         bool drawMean = m_showMeans;
Chris@1332: 
Chris@1367:         meanTop = meanTop - 0.5;
Chris@1367:         meanBottom = meanBottom + 0.5;
Chris@1367:         
Chris@1367:         if (meanTop <= rangeTop + 1.0) {
Chris@1367:             meanTop = rangeTop + 1.0;
Chris@1332:         }
Chris@1367:         if (meanBottom >= rangeBottom - 1.0 && m_scale == LinearScale) {
Chris@1367:             meanBottom = rangeBottom - 1.0;
Chris@1332:         }
Chris@1367:         if (meanTop > meanBottom - 1.0) {
Chris@1367:             drawMean = false;
Chris@1332:         }
Chris@1332: 
Chris@1338: #ifdef DEBUG_WAVEFORM_PAINT_BY_PIXEL
Chris@1338:         SVCERR << "range " << rangeBottom << " -> " << rangeTop << ", means " << meanBottom << " -> " << meanTop << ", raw range " << range.min() << " -> " << range.max() << endl;
Chris@1332: #endif
Chris@1332: 
Chris@1367:         double rangeMiddle = (rangeTop + rangeBottom) / 2.0;
Chris@1367:         bool trivialRange = (fabs(rangeTop - rangeBottom) < 1.0);
Chris@1367:         double px = x + 0.5;
Chris@1367:         
Chris@1367:         if (showIndividualSample) {
Chris@1367:             individualSamplePoints.push_back(QPointF(px, rangeTop));
Chris@1367:             if (!trivialRange) {
Chris@1367:                 // common e.g. in "butterfly" merging mode
Chris@1367:                 individualSamplePoints.push_back(QPointF(px, rangeBottom));
Chris@1332:             }
Chris@1332:         }
Chris@1372: 
Chris@1372:         bool contiguous = true;
Chris@1372:         if (rangeTop > prevRangeBottom + 0.5 ||
Chris@1372:             rangeBottom < prevRangeTop - 0.5) {
Chris@1372:             contiguous = false;
Chris@1372:         }
Chris@1332:         
Chris@1372:         if (firstPoint || (contiguous && !trivialRange)) {
Chris@1372:             waveformPath.moveTo(QPointF(px, rangeTop));
Chris@1372:             waveformPath.lineTo(QPointF(px, rangeBottom));
Chris@1372:             waveformPath.moveTo(QPointF(px, rangeMiddle));
Chris@1367:         } else {
Chris@1367:             waveformPath.lineTo(QPointF(px, rangeMiddle));
Chris@1372:             if (!trivialRange) {
Chris@1372:                 waveformPath.lineTo(QPointF(px, rangeTop));
Chris@1372:                 waveformPath.lineTo(QPointF(px, rangeBottom));
Chris@1372:                 waveformPath.lineTo(QPointF(px, rangeMiddle));
Chris@1372:             }
Chris@1367:         }
Chris@1367: 
Chris@1372:         firstPoint = false;
Chris@1372:         prevRangeTop = rangeTop;
Chris@1372:         prevRangeBottom = rangeBottom;
Chris@1372:         
Chris@1332:         if (drawMean) {
Chris@1367:             meanPath.moveTo(QPointF(px, meanBottom));
Chris@1367:             meanPath.lineTo(QPointF(px, meanTop));
Chris@1332:         }
Chris@1367: 
Chris@1367:         if (clipped) {
Chris@1367:             if (trivialRange) {
Chris@1367:                 clipPath.moveTo(QPointF(px, rangeMiddle));
Chris@1367:                 clipPath.lineTo(QPointF(px+1, rangeMiddle));
Chris@1367:             } else {
Chris@1367:                 clipPath.moveTo(QPointF(px, rangeBottom));
Chris@1367:                 clipPath.lineTo(QPointF(px, rangeTop));
Chris@1367:             }
Chris@1367:         }
Chris@1367:     }
Chris@1367: 
Chris@1367:     double penWidth = 1.0;
Chris@1418:     if (v->getZoomLevel().zone == ZoomLevel::FramesPerPixel) {
Chris@1418:         penWidth = 0.0;
Chris@1418:     }
Chris@1367:     
Chris@1474:     if (model->isReady()) {
Chris@1367:         paint->setPen(QPen(baseColour, penWidth));
Chris@1367:     } else {
Chris@1367:         paint->setPen(QPen(midColour, penWidth));
Chris@1367:     }
Chris@1367:     paint->drawPath(waveformPath);
Chris@1367: 
Chris@1367:     if (!clipPath.isEmpty()) {
Chris@1367:         paint->save();
Chris@1367:         paint->setPen(QPen(ColourDatabase::getInstance()->
Chris@1367:                            getContrastingColour(m_colour), penWidth));
Chris@1367:         paint->drawPath(clipPath);
Chris@1367:         paint->restore();
Chris@1367:     }
Chris@1367: 
Chris@1367:     if (!meanPath.isEmpty()) {
Chris@1367:         paint->save();
Chris@1367:         paint->setPen(QPen(midColour, penWidth));
Chris@1367:         paint->drawPath(meanPath);
Chris@1367:         paint->restore();
Chris@1367:     }
Chris@1367:     
Chris@1367:     if (!individualSamplePoints.empty()) {
Chris@1401:         double sz = v->scaleSize(2.0);
Chris@1371:         if (v->getZoomLevel().zone == ZoomLevel::PixelsPerFrame) {
Chris@1371:             if (v->getZoomLevel().level < 10) {
Chris@1401:                 sz = v->scaleSize(1.2);
Chris@1371:             }
Chris@1371:         }
Chris@1367:         paint->save();
Chris@1367:         paint->setPen(QPen(baseColour, penWidth));
Chris@1367:         for (QPointF p: individualSamplePoints) {
Chris@1367:             paint->drawRect(QRectF(p.x() - sz/2, p.y() - sz/2, sz, sz));
Chris@1367:         }
Chris@1367:         paint->restore();
Chris@1332:     }
Chris@1332: }
Chris@1332: 
Chris@1335: void
Chris@1335: WaveformLayer::paintChannelScaleGuides(LayerGeometryProvider *v,
Chris@1335:                                        QPainter *paint,
Chris@1335:                                        QRect rect,
Chris@1335:                                        int ch) const
Chris@1335: {
Chris@1335:     int x0 = rect.left();
Chris@1335:     int x1 = rect.right();
Chris@1335: 
Chris@1335:     int n = 10;
Chris@1335:     int py = -1;
Chris@1335: 
Chris@1335:     double gain = m_effectiveGains[ch];
Chris@1335:         
Chris@1335:     if (v->hasLightBackground() &&
Chris@1335:         v->getViewManager() &&
Chris@1335:         v->getViewManager()->shouldShowScaleGuides()) {
Chris@1335: 
Chris@1335:         paint->setPen(QColor(240, 240, 240));
Chris@1335: 
Chris@1335:         for (int i = 1; i < n; ++i) {
Chris@1335:                 
Chris@1335:             double val = 0.0, nval = 0.0;
Chris@1335: 
Chris@1335:             switch (m_scale) {
Chris@1335: 
Chris@1335:             case LinearScale:
Chris@1335:                 val = (i * gain) / n;
Chris@1335:                 if (i > 0) nval = -val;
Chris@1335:                 break;
Chris@1335: 
Chris@1335:             case MeterScale:
Chris@1335:                 val = AudioLevel::dB_to_multiplier(meterdbs[i]) * gain;
Chris@1335:                 break;
Chris@1335: 
Chris@1335:             case dBScale:
Chris@1335:                 val = AudioLevel::dB_to_multiplier(-(10*n) + i * 10) * gain;
Chris@1335:                 break;
Chris@1335:             }
Chris@1335: 
Chris@1335:             if (val < -1.0 || val > 1.0) continue;
Chris@1335: 
Chris@1335:             int y = getYForValue(v, val, ch);
Chris@1335: 
Chris@1335:             if (py >= 0 && abs(y - py) < 10) continue;
Chris@1335:             else py = y;
Chris@1335: 
Chris@1335:             int ny = y;
Chris@1335:             if (nval != 0.0) {
Chris@1335:                 ny = getYForValue(v, nval, ch);
Chris@1335:             }
Chris@1335: 
Chris@1335:             paint->drawLine(x0, y, x1, y);
Chris@1335:             if (ny != y) {
Chris@1335:                 paint->drawLine(x0, ny, x1, ny);
Chris@1335:             }
Chris@1335:         }
Chris@1335:     }
Chris@1335: }
Chris@1335: 
Chris@25: QString
Chris@918: WaveformLayer::getFeatureDescription(LayerGeometryProvider *v, QPoint &pos) const
Chris@25: {
Chris@25:     int x = pos.x();
Chris@25: 
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model || !model->isOK()) return "";
Chris@25: 
Chris@1325:     ZoomLevel zoomLevel = v->getZoomLevel();
Chris@25: 
Chris@1325:     int desiredBlockSize = 1;
Chris@1325:     if (zoomLevel.zone == ZoomLevel::FramesPerPixel) {
Chris@1325:         desiredBlockSize = zoomLevel.level;
Chris@1325:     }
Chris@1325: 
Chris@1474:     int blockSize = model->getSummaryBlockSize(desiredBlockSize);
Chris@365: 
Chris@908:     sv_frame_t f0, f1;
Chris@1325:     if (!getSourceFramesForX(v, x, blockSize, f0, f1)) return "";
Chris@25:     
Chris@25:     QString text;
Chris@25: 
Chris@1474:     RealTime rt0 = RealTime::frame2RealTime(f0, model->getSampleRate());
Chris@1474:     RealTime rt1 = RealTime::frame2RealTime(f1, model->getSampleRate());
Chris@25: 
Chris@25:     if (f1 != f0 + 1 && (rt0.sec != rt1.sec || rt0.msec() != rt1.msec())) {
Chris@1266:         text += tr("Time:\t%1 - %2")
Chris@1266:             .arg(rt0.toText(true).c_str())
Chris@1266:             .arg(rt1.toText(true).c_str());
Chris@25:     } else {
Chris@1266:         text += tr("Time:\t%1")
Chris@1266:             .arg(rt0.toText(true).c_str());
Chris@25:     }
Chris@25: 
Chris@805:     int channels = 0, minChannel = 0, maxChannel = 0;
Chris@67:     bool mergingChannels = false, mixingChannels = false;
Chris@25: 
Chris@67:     channels = getChannelArrangement(minChannel, maxChannel,
Chris@67:                                      mergingChannels, mixingChannels);
Chris@25:     if (channels == 0) return "";
Chris@25: 
Chris@805:     for (int ch = minChannel; ch <= maxChannel; ++ch) {
Chris@25: 
Chris@1266:         RangeSummarisableTimeValueModel::RangeBlock ranges;
Chris@1474:         model->getSummaries(ch, f0, f1 - f0, ranges, blockSize);
Chris@25: 
Chris@1266:         if (ranges.empty()) continue;
Chris@1266:         
Chris@1266:         RangeSummarisableTimeValueModel::Range range = ranges[0];
Chris@1266:         
Chris@1266:         QString label = tr("Level:");
Chris@1266:         if (minChannel != maxChannel) {
Chris@1266:             if (ch == 0) label = tr("Left:");
Chris@1266:             else if (ch == 1) label = tr("Right:");
Chris@1266:             else label = tr("Channel %1").arg(ch + 1);
Chris@1266:         }
Chris@25: 
Chris@76:         bool singleValue = false;
Chris@908:         double min, max;
Chris@76: 
Chris@386:         if (fabs(range.min()) < 0.01) {
Chris@386:             min = range.min();
Chris@386:             max = range.max();
Chris@76:             singleValue = (min == max);
Chris@76:         } else {
Chris@908:             int imin = int(lrint(range.min() * 10000));
Chris@908:             int imax = int(lrint(range.max() * 10000));
Chris@76:             singleValue = (imin == imax);
Chris@908:             min = double(imin)/10000;
Chris@908:             max = double(imax)/10000;
Chris@76:         }
Chris@76: 
Chris@1266:         int db = int(AudioLevel::multiplier_to_dB(std::max(fabsf(range.min()),
Chris@1266:                                                            fabsf(range.max())))
Chris@1266:                      * 100);
Chris@25: 
Chris@1266:         if (!singleValue) {
Chris@1266:             text += tr("\n%1\t%2 - %3 (%4 dB peak)")
Chris@1266:                 .arg(label).arg(min).arg(max).arg(double(db)/100);
Chris@1266:         } else {
Chris@1266:             text += tr("\n%1\t%2 (%3 dB peak)")
Chris@1266:                 .arg(label).arg(min).arg(double(db)/100);
Chris@1266:         }
Chris@25:     }
Chris@25: 
Chris@25:     return text;
Chris@25: }
Chris@25: 
Chris@0: int
Chris@918: WaveformLayer::getYForValue(const LayerGeometryProvider *v, double value, int channel) const
Chris@68: {
Chris@805:     int channels = 0, minChannel = 0, maxChannel = 0;
Chris@274:     bool mergingChannels = false, mixingChannels = false;
Chris@274: 
Chris@274:     channels = getChannelArrangement(minChannel, maxChannel,
Chris@274:                                      mergingChannels, mixingChannels);
Chris@853:     if (channels == 0) return 0;
Chris@68:     if (maxChannel < minChannel || channel < minChannel) return 0;
Chris@68: 
Chris@918:     int h = v->getPaintHeight();
Chris@68:     int m = (h / channels) / 2;
Chris@1266:         
Chris@68:     if ((m_scale == dBScale || m_scale == MeterScale) &&
Chris@68:         m_channelMode != MergeChannels) {
Chris@68:         m = (h / channels);
Chris@68:     }
Chris@68: 
Chris@274:     int my = m + (((channel - minChannel) * h) / channels);
Chris@274: 
Chris@68:     int vy = 0;
Chris@68: 
Chris@274:     switch (m_scale) {
Chris@68: 
Chris@68:     case LinearScale:
Chris@68:         vy = int(m * value);
Chris@68:         break;
Chris@68: 
Chris@68:     case MeterScale:
Chris@68:         vy = AudioLevel::multiplier_to_preview(value, m);
Chris@68:         break;
Chris@68: 
Chris@68:     case dBScale:
Chris@1367:         vy = int(dBscale(value, m));
Chris@68:         break;
Chris@68:     }
Chris@68: 
Chris@1338: //    SVCERR << "mergingChannels= " << mergingChannels << ", channel  = " << channel << ", value = " << value << ", vy = " << vy << endl;
Chris@324: 
Chris@68:     return my - vy;
Chris@68: }
Chris@68: 
Chris@908: double
Chris@918: WaveformLayer::getValueForY(const LayerGeometryProvider *v, int y, int &channel) const
Chris@261: {
Chris@805:     int channels = 0, minChannel = 0, maxChannel = 0;
Chris@274:     bool mergingChannels = false, mixingChannels = false;
Chris@274: 
Chris@274:     channels = getChannelArrangement(minChannel, maxChannel,
Chris@274:                                      mergingChannels, mixingChannels);
Chris@853:     if (channels == 0) return 0;
Chris@261:     if (maxChannel < minChannel) return 0;
Chris@261: 
Chris@918:     int h = v->getPaintHeight();
Chris@261:     int m = (h / channels) / 2;
Chris@261: 
Chris@261:     if ((m_scale == dBScale || m_scale == MeterScale) &&
Chris@261:         m_channelMode != MergeChannels) {
Chris@261:         m = (h / channels);
Chris@261:     }
Chris@274:   
Chris@274:     channel = (y * channels) / h + minChannel;
Chris@261: 
Chris@261:     int my = m + (((channel - minChannel) * h) / channels);
Chris@261: 
Chris@262:     int vy = my - y;
Chris@908:     double value = 0;
Chris@908:     double thresh = -50.f;
Chris@261: 
Chris@274:     switch (m_scale) {
Chris@261: 
Chris@261:     case LinearScale:
Chris@908:         value = double(vy) / m;
Chris@261:         break;
Chris@261: 
Chris@261:     case MeterScale:
Chris@261:         value = AudioLevel::preview_to_multiplier(vy, m);
Chris@261:         break;
Chris@261: 
Chris@261:     case dBScale:
Chris@908:         value = (-thresh * double(vy)) / m + thresh;
Chris@274:         value = AudioLevel::dB_to_multiplier(value);
Chris@261:         break;
Chris@261:     }
Chris@261: 
Chris@274:     return value / m_gain;
Chris@261: }
Chris@261: 
Chris@261: bool
Chris@918: WaveformLayer::getYScaleValue(const LayerGeometryProvider *v, int y,
Chris@908:                               double &value, QString &unit) const
Chris@261: {
Chris@805:     int channel;
Chris@261: 
Chris@274:     value = getValueForY(v, y, channel);
Chris@261: 
Chris@274:     if (m_scale == dBScale || m_scale == MeterScale) {
Chris@261: 
Chris@908:         double thresh = -50.f;
Chris@274:         
Chris@908:         if (value > 0.0) {
Chris@908:             value = 10.0 * log10(value);
Chris@274:             if (value < thresh) value = thresh;
Chris@274:         } else value = thresh;
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: WaveformLayer::getYScaleDifference(const LayerGeometryProvider *v, int y0, int y1,
Chris@908:                                    double &diff, QString &unit) const
Chris@274: {
Chris@805:     int c0, c1;
Chris@908:     double v0 = getValueForY(v, y0, c0);
Chris@908:     double v1 = getValueForY(v, y1, c1);
Chris@274: 
Chris@274:     if (c0 != c1) {
Chris@274:         // different channels, not comparable
Chris@908:         diff = 0.0;
Chris@274:         unit = "";
Chris@274:         return false;
Chris@274:     }
Chris@274: 
Chris@274:     if (m_scale == dBScale || m_scale == MeterScale) {
Chris@274: 
Chris@908:         double thresh = -50.0;
Chris@274: 
Chris@274:         if (v1 == v0) diff = thresh;
Chris@274:         else {
Chris@274:             if (v1 > v0) diff = v0 / v1;
Chris@274:             else diff = v1 / v0;
Chris@274: 
Chris@908:             diff = 10.0 * log10(diff);
Chris@274:             if (diff < thresh) diff = thresh;
Chris@274:         }
Chris@274: 
Chris@274:         unit = "dBV";
Chris@274: 
Chris@274:     } else {
Chris@908:         diff = fabs(v1 - v0);
Chris@274:         unit = "V";
Chris@274:     }
Chris@274: 
Chris@261:     return true;
Chris@261: }
Chris@261: 
Chris@68: int
Chris@918: WaveformLayer::getVerticalScaleWidth(LayerGeometryProvider *, bool, QPainter &paint) const
Chris@0: {
Chris@1474:     // Qt 5.13 deprecates QFontMetrics::width(), but its suggested
Chris@1474:     // replacement (horizontalAdvance) was only added in Qt 5.11
Chris@1474:     // which is too new for us
Chris@1474: #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
Chris@1474: 
Chris@0:     if (m_scale == LinearScale) {
Chris@1266:         return paint.fontMetrics().width("0.0") + 13;
Chris@0:     } else {
Chris@1266:         return std::max(paint.fontMetrics().width(tr("0dB")),
Chris@1266:                         paint.fontMetrics().width(Strings::minus_infinity)) + 13;
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@918: WaveformLayer::paintVerticalScale(LayerGeometryProvider *v, bool, QPainter &paint, QRect rect) const
Chris@0: {
Chris@1474:     auto model = ModelById::getAs<RangeSummarisableTimeValueModel>(m_model);
Chris@1474:     if (!model || !model->isOK()) {
Chris@1266:         return;
Chris@0:     }
Chris@0: 
Chris@805:     int channels = 0, minChannel = 0, maxChannel = 0;
Chris@67:     bool mergingChannels = false, mixingChannels = false;
Chris@0: 
Chris@67:     channels = getChannelArrangement(minChannel, maxChannel,
Chris@67:                                      mergingChannels, mixingChannels);
Chris@0:     if (channels == 0) return;
Chris@0: 
Chris@0:     int h = rect.height(), w = rect.width();
Chris@0:     int textHeight = paint.fontMetrics().height();
Chris@0:     int toff = -textHeight/2 + paint.fontMetrics().ascent() + 1;
Chris@0: 
Chris@908:     double gain = m_gain;
Chris@67: 
Chris@805:     for (int ch = minChannel; ch <= maxChannel; ++ch) {
Chris@0: 
Chris@1266:         int lastLabelledY = -1;
Chris@0: 
Chris@805:         if (ch < (int)m_effectiveGains.size()) gain = m_effectiveGains[ch];
Chris@67: 
Chris@68:         int n = 10;
Chris@0: 
Chris@1266:         for (int i = 0; i <= n; ++i) {
Chris@68: 
Chris@908:             double val = 0.0, nval = 0.0;
Chris@1266:             QString text = "";
Chris@0: 
Chris@68:             switch (m_scale) {
Chris@68:                 
Chris@68:             case LinearScale:
Chris@68:                 val = (i * gain) / n;
Chris@1266:                 text = QString("%1").arg(double(i) / n);
Chris@1266:                 if (i == 0) text = "0.0";
Chris@68:                 else {
Chris@68:                     nval = -val;
Chris@68:                     if (i == n) text = "1.0";
Chris@68:                 }
Chris@68:                 break;
Chris@0: 
Chris@68:             case MeterScale:
Chris@68:                 val = AudioLevel::dB_to_multiplier(meterdbs[i]) * gain;
Chris@1266:                 text = QString("%1").arg(meterdbs[i]);
Chris@1266:                 if (i == n) text = tr("0dB");
Chris@1266:                 if (i == 0) {
Chris@1147:                     text = Strings::minus_infinity;
Chris@68:                     val = 0.0;
Chris@1266:                 }
Chris@68:                 break;
Chris@0: 
Chris@68:             case dBScale:
Chris@68:                 val = AudioLevel::dB_to_multiplier(-(10*n) + i * 10) * gain;
Chris@1266:                 text = QString("%1").arg(-(10*n) + i * 10);
Chris@1266:                 if (i == n) text = tr("0dB");
Chris@1266:                 if (i == 0) {
Chris@1147:                     text = Strings::minus_infinity;
Chris@68:                     val = 0.0;
Chris@1266:                 }
Chris@68:                 break;
Chris@68:             }
Chris@0: 
Chris@68:             if (val < -1.0 || val > 1.0) continue;
Chris@0: 
Chris@274:             int y = getYForValue(v, val, ch);
Chris@0: 
Chris@68:             int ny = y;
Chris@68:             if (nval != 0.0) {
Chris@274:                 ny = getYForValue(v, nval, ch);
Chris@68:             }
Chris@0: 
Chris@68:             bool spaceForLabel = (i == 0 ||
Chris@68:                                   abs(y - lastLabelledY) >= textHeight - 1);
Chris@0: 
Chris@68:             if (spaceForLabel) {
Chris@0: 
Chris@68:                 int tx = 3;
Chris@68:                 if (m_scale != LinearScale) {
Chris@68:                     tx = w - 10 - paint.fontMetrics().width(text);
Chris@68:                 }
Chris@68:                   
Chris@68:                 int ty = y;
Chris@68:                 if (ty < paint.fontMetrics().ascent()) {
Chris@68:                     ty = paint.fontMetrics().ascent();
Chris@68:                 } else if (ty > h - paint.fontMetrics().descent()) {
Chris@68:                     ty = h - paint.fontMetrics().descent();
Chris@68:                 } else {
Chris@68:                     ty += toff;
Chris@68:                 }
Chris@68:                 paint.drawText(tx, ty, text);
Chris@0: 
Chris@68:                 lastLabelledY = ty - toff;
Chris@67: 
Chris@68:                 if (ny != y) {
Chris@68:                     ty = ny;
Chris@68:                     if (ty < paint.fontMetrics().ascent()) {
Chris@68:                         ty = paint.fontMetrics().ascent();
Chris@68:                     } else if (ty > h - paint.fontMetrics().descent()) {
Chris@68:                         ty = h - paint.fontMetrics().descent();
Chris@68:                     } else {
Chris@68:                         ty += toff;
Chris@68:                     }
Chris@68:                     paint.drawText(tx, ty, text);
Chris@68:                 }
Chris@68: 
Chris@68:                 paint.drawLine(w - 7, y, w, y);
Chris@68:                 if (ny != y) paint.drawLine(w - 7, ny, w, ny);
Chris@68: 
Chris@68:             } else {
Chris@68: 
Chris@68:                 paint.drawLine(w - 4, y, w, y);
Chris@68:                 if (ny != y) paint.drawLine(w - 4, ny, w, ny);
Chris@68:             }
Chris@1266:         }
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@316: void
Chris@316: WaveformLayer::toXml(QTextStream &stream,
Chris@316:                      QString indent, QString extraAttributes) const
Chris@6: {
Chris@6:     QString s;
Chris@6:     
Chris@285:     QString colourName, colourSpec, darkbg;
Chris@285:     ColourDatabase::getInstance()->getStringValues
Chris@285:         (m_colour, colourName, colourSpec, darkbg);
Chris@285: 
Chris@6:     s += QString("gain=\"%1\" "
Chris@1266:                  "showMeans=\"%2\" "
Chris@1266:                  "greyscale=\"%3\" "
Chris@1266:                  "channelMode=\"%4\" "
Chris@1266:                  "channel=\"%5\" "
Chris@287:                  "scale=\"%6\" "
Chris@709:                  "middleLineHeight=\"%7\" "
Chris@1266:                  "aggressive=\"%8\" "
Chris@709:                  "autoNormalize=\"%9\"")
Chris@1266:         .arg(m_gain)
Chris@1266:         .arg(m_showMeans)
Chris@1367:         .arg(true) // Option removed, but effectively always on, so
Chris@1367:                    // retained in the session file for compatibility
Chris@1266:         .arg(m_channelMode)
Chris@1266:         .arg(m_channel)
Chris@1266:         .arg(m_scale)
Chris@709:         .arg(m_middleLineHeight)
Chris@1266:         .arg(m_aggressive)
Chris@67:         .arg(m_autoNormalize);
Chris@6: 
Chris@316:     SingleColourLayer::toXml(stream, indent, extraAttributes + " " + s);
Chris@6: }
Chris@6: 
Chris@11: void
Chris@11: WaveformLayer::setProperties(const QXmlAttributes &attributes)
Chris@11: {
Chris@11:     bool ok = false;
Chris@11: 
Chris@287:     SingleColourLayer::setProperties(attributes);
Chris@287: 
Chris@11:     float gain = attributes.value("gain").toFloat(&ok);
Chris@11:     if (ok) setGain(gain);
Chris@11: 
Chris@11:     bool showMeans = (attributes.value("showMeans") == "1" ||
Chris@1266:                       attributes.value("showMeans") == "true");
Chris@11:     setShowMeans(showMeans);
Chris@11: 
Chris@11:     ChannelMode channelMode = (ChannelMode)
Chris@1266:         attributes.value("channelMode").toInt(&ok);
Chris@11:     if (ok) setChannelMode(channelMode);
Chris@11: 
Chris@11:     int channel = attributes.value("channel").toInt(&ok);
Chris@11:     if (ok) setChannel(channel);
Chris@11: 
Chris@709:     Scale scale = (Scale)attributes.value("scale").toInt(&ok);
Chris@11:     if (ok) setScale(scale);
Chris@11: 
Chris@709:     float middleLineHeight = attributes.value("middleLineHeight").toFloat(&ok);
Chris@709:     if (ok) setMiddleLineHeight(middleLineHeight);
Chris@709: 
Chris@11:     bool aggressive = (attributes.value("aggressive") == "1" ||
Chris@1266:                        attributes.value("aggressive") == "true");
Chris@1367:     setAggressiveCacheing(aggressive);
Chris@67: 
Chris@67:     bool autoNormalize = (attributes.value("autoNormalize") == "1" ||
Chris@67:                           attributes.value("autoNormalize") == "true");
Chris@67:     setAutoNormalize(autoNormalize);
Chris@11: }
Chris@11: 
Chris@133: int
Chris@133: WaveformLayer::getVerticalZoomSteps(int &defaultStep) const
Chris@133: {
Chris@133:     defaultStep = 50;
Chris@133:     return 100;
Chris@133: }
Chris@0: 
Chris@133: int
Chris@133: WaveformLayer::getCurrentVerticalZoomStep() const
Chris@133: {
Chris@908:     int val = int(lrint(log10(m_gain) * 20.0) + 50);
Chris@133:     if (val < 0) val = 0;
Chris@133:     if (val > 100) val = 100;
Chris@133:     return val;
Chris@133: }
Chris@133: 
Chris@133: void
Chris@133: WaveformLayer::setVerticalZoomStep(int step)
Chris@133: {
Chris@908:     setGain(powf(10, float(step - 50) / 20.f));
Chris@133: }
Chris@133: