Chris@0: /* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     A waveform viewer and audio annotation editor.
Chris@5:     Chris Cannam, Queen Mary University of London, 2005-2006
Chris@0:     
Chris@0:     This is experimental software.  Not for distribution.
Chris@0: */
Chris@0: 
Chris@0: #include "SpectrogramLayer.h"
Chris@0: 
Chris@0: #include "base/View.h"
Chris@0: #include "base/Profiler.h"
Chris@0: #include "base/AudioLevel.h"
Chris@0: #include "base/Window.h"
Chris@24: #include "base/Pitch.h"
Chris@0: 
Chris@0: #include <QPainter>
Chris@0: #include <QImage>
Chris@0: #include <QPixmap>
Chris@0: #include <QRect>
Chris@0: #include <QTimer>
Chris@0: 
Chris@0: #include <iostream>
Chris@0: 
Chris@0: #include <cassert>
Chris@0: #include <cmath>
Chris@0: 
Chris@0: //#define DEBUG_SPECTROGRAM_REPAINT 1
Chris@0: 
Chris@0: 
Chris@0: SpectrogramLayer::SpectrogramLayer(View *w, Configuration config) :
Chris@0:     Layer(w),
Chris@0:     m_model(0),
Chris@0:     m_channel(0),
Chris@0:     m_windowSize(1024),
Chris@0:     m_windowType(HanningWindow),
Chris@0:     m_windowOverlap(50),
Chris@0:     m_gain(1.0),
Chris@9:     m_colourRotation(0),
Chris@0:     m_maxFrequency(8000),
Chris@0:     m_colourScale(dBColourScale),
Chris@0:     m_colourScheme(DefaultColours),
Chris@0:     m_frequencyScale(LinearFrequencyScale),
Chris@0:     m_cache(0),
Chris@0:     m_cacheInvalid(true),
Chris@0:     m_pixmapCache(0),
Chris@0:     m_pixmapCacheInvalid(true),
Chris@0:     m_fillThread(0),
Chris@0:     m_updateTimer(0),
Chris@0:     m_lastFillExtent(0),
Chris@0:     m_exiting(false)
Chris@0: {
Chris@0:     if (config == MelodicRange) {
Chris@0: 	setWindowSize(8192);
Chris@0: 	setWindowOverlap(90);
Chris@0: 	setWindowType(ParzenWindow);
Chris@0: 	setMaxFrequency(1000);
Chris@0: 	setColourScale(LinearColourScale);
Chris@0:     }
Chris@0: 
Chris@0:     if (m_view) m_view->setLightBackground(false);
Chris@0:     m_view->addLayer(this);
Chris@0: }
Chris@0: 
Chris@0: SpectrogramLayer::~SpectrogramLayer()
Chris@0: {
Chris@0:     delete m_updateTimer;
Chris@0:     m_updateTimer = 0;
Chris@0: 
Chris@0:     m_exiting = true;
Chris@0:     m_condition.wakeAll();
Chris@0:     if (m_fillThread) m_fillThread->wait();
Chris@0:     delete m_fillThread;
Chris@0:     
Chris@0:     delete m_cache;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setModel(const DenseTimeValueModel *model)
Chris@0: {
Chris@0:     m_mutex.lock();
Chris@0:     m_model = model;
Chris@0:     m_mutex.unlock();
Chris@0: 
Chris@0:     if (!m_model || !m_model->isOK()) return;
Chris@0: 
Chris@0:     connect(m_model, SIGNAL(modelChanged()), this, SIGNAL(modelChanged()));
Chris@0:     connect(m_model, SIGNAL(modelChanged(size_t, size_t)),
Chris@0: 	    this, SIGNAL(modelChanged(size_t, size_t)));
Chris@0: 
Chris@0:     connect(m_model, SIGNAL(completionChanged()),
Chris@0: 	    this, SIGNAL(modelCompletionChanged()));
Chris@0: 
Chris@0:     connect(m_model, SIGNAL(modelChanged()), this, SLOT(cacheInvalid()));
Chris@0:     connect(m_model, SIGNAL(modelChanged(size_t, size_t)),
Chris@0: 	    this, SLOT(cacheInvalid(size_t, size_t)));
Chris@0: 
Chris@0:     emit modelReplaced();
Chris@0:     fillCache();
Chris@0: }
Chris@0: 
Chris@0: Layer::PropertyList
Chris@0: SpectrogramLayer::getProperties() const
Chris@0: {
Chris@0:     PropertyList list;
Chris@0:     list.push_back(tr("Colour"));
Chris@0:     list.push_back(tr("Colour Scale"));
Chris@0:     list.push_back(tr("Window Type"));
Chris@0:     list.push_back(tr("Window Size"));
Chris@0:     list.push_back(tr("Window Overlap"));
Chris@0:     list.push_back(tr("Gain"));
Chris@9:     list.push_back(tr("Colour Rotation"));
Chris@0:     list.push_back(tr("Max Frequency"));
Chris@0:     list.push_back(tr("Frequency Scale"));
Chris@0:     return list;
Chris@0: }
Chris@0: 
Chris@0: Layer::PropertyType
Chris@0: SpectrogramLayer::getPropertyType(const PropertyName &name) const
Chris@0: {
Chris@0:     if (name == tr("Gain")) return RangeProperty;
Chris@9:     if (name == tr("Colour Rotation")) return RangeProperty;
Chris@0:     return ValueProperty;
Chris@0: }
Chris@0: 
Chris@0: QString
Chris@0: SpectrogramLayer::getPropertyGroupName(const PropertyName &name) const
Chris@0: {
Chris@0:     if (name == tr("Window Size") ||
Chris@0: 	name == tr("Window Overlap")) return tr("Window");
Chris@0:     if (name == tr("Gain") ||
Chris@9: 	name == tr("Colour Rotation") ||
Chris@0: 	name == tr("Colour Scale")) return tr("Scale");
Chris@0:     if (name == tr("Max Frequency") ||
Chris@0: 	name == tr("Frequency Scale")) return tr("Frequency");
Chris@0:     return QString();
Chris@0: }
Chris@0: 
Chris@0: int
Chris@0: SpectrogramLayer::getPropertyRangeAndValue(const PropertyName &name,
Chris@0: 					    int *min, int *max) const
Chris@0: {
Chris@0:     int deft = 0;
Chris@0: 
Chris@10:     int throwaway;
Chris@10:     if (!min) min = &throwaway;
Chris@10:     if (!max) max = &throwaway;
Chris@10: 
Chris@0:     if (name == tr("Gain")) {
Chris@0: 
Chris@0: 	*min = -50;
Chris@0: 	*max = 50;
Chris@0: 
Chris@0: 	deft = lrint(log10(m_gain) * 20.0);
Chris@0: 	if (deft < *min) deft = *min;
Chris@0: 	if (deft > *max) deft = *max;
Chris@0: 
Chris@9:     } else if (name == tr("Colour Rotation")) {
Chris@9: 
Chris@9: 	*min = 0;
Chris@9: 	*max = 256;
Chris@9: 
Chris@9: 	deft = m_colourRotation;
Chris@9: 
Chris@0:     } else if (name == tr("Colour Scale")) {
Chris@0: 
Chris@0: 	*min = 0;
Chris@0: 	*max = 3;
Chris@0: 
Chris@0: 	deft = (int)m_colourScale;
Chris@0: 
Chris@0:     } else if (name == tr("Colour")) {
Chris@0: 
Chris@0: 	*min = 0;
Chris@0: 	*max = 5;
Chris@0: 
Chris@0: 	deft = (int)m_colourScheme;
Chris@0: 
Chris@0:     } else if (name == tr("Window Type")) {
Chris@0: 
Chris@0: 	*min = 0;
Chris@0: 	*max = 6;
Chris@0: 
Chris@0: 	deft = (int)m_windowType;
Chris@0: 
Chris@0:     } else if (name == tr("Window Size")) {
Chris@0: 
Chris@0: 	*min = 0;
Chris@0: 	*max = 10;
Chris@0: 	
Chris@0: 	deft = 0;
Chris@0: 	int ws = m_windowSize;
Chris@0: 	while (ws > 32) { ws >>= 1; deft ++; }
Chris@0: 
Chris@0:     } else if (name == tr("Window Overlap")) {
Chris@0: 	
Chris@0: 	*min = 0;
Chris@0: 	*max = 4;
Chris@0: 	
Chris@0: 	deft = m_windowOverlap / 25;
Chris@0: 	if (m_windowOverlap == 90) deft = 4;
Chris@0:     
Chris@0:     } else if (name == tr("Max Frequency")) {
Chris@0: 
Chris@0: 	*min = 0;
Chris@0: 	*max = 9;
Chris@0: 
Chris@0: 	switch (m_maxFrequency) {
Chris@0: 	case 500: deft = 0; break;
Chris@0: 	case 1000: deft = 1; break;
Chris@0: 	case 1500: deft = 2; break;
Chris@0: 	case 2000: deft = 3; break;
Chris@0: 	case 4000: deft = 4; break;
Chris@0: 	case 6000: deft = 5; break;
Chris@0: 	case 8000: deft = 6; break;
Chris@0: 	case 12000: deft = 7; break;
Chris@0: 	case 16000: deft = 8; break;
Chris@0: 	default: deft = 9; break;
Chris@0: 	}
Chris@0: 
Chris@0:     } else if (name == tr("Frequency Scale")) {
Chris@0: 
Chris@0: 	*min = 0;
Chris@0: 	*max = 1;
Chris@0: 	deft = (int)m_frequencyScale;
Chris@0: 
Chris@0:     } else {
Chris@0: 	deft = Layer::getPropertyRangeAndValue(name, min, max);
Chris@0:     }
Chris@0: 
Chris@0:     return deft;
Chris@0: }
Chris@0: 
Chris@0: QString
Chris@0: SpectrogramLayer::getPropertyValueLabel(const PropertyName &name,
Chris@9: 					int value) const
Chris@0: {
Chris@0:     if (name == tr("Colour")) {
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0: return tr("Default");
Chris@0: 	case 1: return tr("White on Black");
Chris@0: 	case 2: return tr("Black on White");
Chris@0: 	case 3: return tr("Red on Blue");
Chris@0: 	case 4: return tr("Yellow on Black");
Chris@0: 	case 5: return tr("Red on Black");
Chris@0: 	}
Chris@0:     }
Chris@0:     if (name == tr("Colour Scale")) {
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0: return tr("Level Linear");
Chris@0: 	case 1: return tr("Level Meter");
Chris@0: 	case 2: return tr("Level dB");
Chris@0: 	case 3: return tr("Phase");
Chris@0: 	}
Chris@0:     }
Chris@0:     if (name == tr("Window Type")) {
Chris@0: 	switch ((WindowType)value) {
Chris@0: 	default:
Chris@0: 	case RectangularWindow: return tr("Rectangular");
Chris@0: 	case BartlettWindow: return tr("Bartlett");
Chris@0: 	case HammingWindow: return tr("Hamming");
Chris@0: 	case HanningWindow: return tr("Hanning");
Chris@0: 	case BlackmanWindow: return tr("Blackman");
Chris@0: 	case GaussianWindow: return tr("Gaussian");
Chris@0: 	case ParzenWindow: return tr("Parzen");
Chris@0: 	}
Chris@0:     }
Chris@0:     if (name == tr("Window Size")) {
Chris@0: 	return QString("%1").arg(32 << value);
Chris@0:     }
Chris@0:     if (name == tr("Window Overlap")) {
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0: return tr("None");
Chris@0: 	case 1: return tr("25 %");
Chris@0: 	case 2: return tr("50 %");
Chris@0: 	case 3: return tr("75 %");
Chris@0: 	case 4: return tr("90 %");
Chris@0: 	}
Chris@0:     }
Chris@0:     if (name == tr("Max Frequency")) {
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0: return tr("500 Hz");
Chris@0: 	case 1: return tr("1 KHz");
Chris@0: 	case 2: return tr("1.5 KHz");
Chris@0: 	case 3: return tr("2 KHz");
Chris@0: 	case 4: return tr("4 KHz");
Chris@0: 	case 5: return tr("6 KHz");
Chris@0: 	case 6: return tr("8 KHz");
Chris@0: 	case 7: return tr("12 KHz");
Chris@0: 	case 8: return tr("16 KHz");
Chris@0: 	case 9: return tr("All");
Chris@0: 	}
Chris@0:     }
Chris@0:     if (name == tr("Frequency Scale")) {
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0: return tr("Linear");
Chris@0: 	case 1: return tr("Log");
Chris@0: 	}
Chris@0:     }
Chris@0:     return tr("<unknown>");
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setProperty(const PropertyName &name, int value)
Chris@0: {
Chris@0:     if (name == tr("Gain")) {
Chris@0: 	setGain(pow(10, float(value)/20.0));
Chris@9:     } else if (name == tr("Colour Rotation")) {
Chris@9: 	setColourRotation(value);
Chris@0:     } else if (name == tr("Colour")) {
Chris@0: 	if (m_view) m_view->setLightBackground(value == 2);
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0:	setColourScheme(DefaultColours); break;
Chris@0: 	case 1: setColourScheme(WhiteOnBlack); break;
Chris@0: 	case 2: setColourScheme(BlackOnWhite); break;
Chris@0: 	case 3: setColourScheme(RedOnBlue); break;
Chris@0: 	case 4: setColourScheme(YellowOnBlack); break;
Chris@0: 	case 5: setColourScheme(RedOnBlack); break;
Chris@0: 	}
Chris@0:     } else if (name == tr("Window Type")) {
Chris@0: 	setWindowType(WindowType(value));
Chris@0:     } else if (name == tr("Window Size")) {
Chris@0: 	setWindowSize(32 << value);
Chris@0:     } else if (name == tr("Window Overlap")) {
Chris@0: 	if (value == 4) setWindowOverlap(90);
Chris@0: 	else setWindowOverlap(25 * value);
Chris@0:     } else if (name == tr("Max Frequency")) {
Chris@0: 	switch (value) {
Chris@0: 	case 0: setMaxFrequency(500); break;
Chris@0: 	case 1: setMaxFrequency(1000); break;
Chris@0: 	case 2: setMaxFrequency(1500); break;
Chris@0: 	case 3: setMaxFrequency(2000); break;
Chris@0: 	case 4: setMaxFrequency(4000); break;
Chris@0: 	case 5: setMaxFrequency(6000); break;
Chris@0: 	case 6: setMaxFrequency(8000); break;
Chris@0: 	case 7: setMaxFrequency(12000); break;
Chris@0: 	case 8: setMaxFrequency(16000); break;
Chris@0: 	default:
Chris@0: 	case 9: setMaxFrequency(0); break;
Chris@0: 	}
Chris@0:     } else if (name == tr("Colour Scale")) {
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0: setColourScale(LinearColourScale); break;
Chris@0: 	case 1: setColourScale(MeterColourScale); break;
Chris@0: 	case 2: setColourScale(dBColourScale); break;
Chris@0: 	case 3: setColourScale(PhaseColourScale); break;
Chris@0: 	}
Chris@0:     } else if (name == tr("Frequency Scale")) {
Chris@0: 	switch (value) {
Chris@0: 	default:
Chris@0: 	case 0: setFrequencyScale(LinearFrequencyScale); break;
Chris@0: 	case 1: setFrequencyScale(LogFrequencyScale); break;
Chris@0: 	}
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setChannel(int ch)
Chris@0: {
Chris@0:     if (m_channel == ch) return;
Chris@0: 
Chris@0:     m_mutex.lock();
Chris@0:     m_cacheInvalid = true;
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     
Chris@0:     m_channel = ch;
Chris@9: 
Chris@9:     m_mutex.unlock();
Chris@9: 
Chris@0:     emit layerParametersChanged();
Chris@9: 
Chris@0:     fillCache();
Chris@0: }
Chris@0: 
Chris@0: int
Chris@0: SpectrogramLayer::getChannel() const
Chris@0: {
Chris@0:     return m_channel;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setWindowSize(size_t ws)
Chris@0: {
Chris@0:     if (m_windowSize == ws) return;
Chris@0: 
Chris@0:     m_mutex.lock();
Chris@0:     m_cacheInvalid = true;
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     
Chris@0:     m_windowSize = ws;
Chris@0:     
Chris@0:     m_mutex.unlock();
Chris@9: 
Chris@9:     emit layerParametersChanged();
Chris@9: 
Chris@0:     fillCache();
Chris@0: }
Chris@0: 
Chris@0: size_t
Chris@0: SpectrogramLayer::getWindowSize() const
Chris@0: {
Chris@0:     return m_windowSize;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setWindowOverlap(size_t wi)
Chris@0: {
Chris@0:     if (m_windowOverlap == wi) return;
Chris@0: 
Chris@0:     m_mutex.lock();
Chris@0:     m_cacheInvalid = true;
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     
Chris@0:     m_windowOverlap = wi;
Chris@0:     
Chris@0:     m_mutex.unlock();
Chris@9: 
Chris@9:     emit layerParametersChanged();
Chris@9: 
Chris@0:     fillCache();
Chris@0: }
Chris@0: 
Chris@0: size_t
Chris@0: SpectrogramLayer::getWindowOverlap() const
Chris@0: {
Chris@0:     return m_windowOverlap;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setWindowType(WindowType w)
Chris@0: {
Chris@0:     if (m_windowType == w) return;
Chris@0: 
Chris@0:     m_mutex.lock();
Chris@0:     m_cacheInvalid = true;
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     
Chris@0:     m_windowType = w;
Chris@0:     
Chris@0:     m_mutex.unlock();
Chris@9: 
Chris@9:     emit layerParametersChanged();
Chris@9: 
Chris@0:     fillCache();
Chris@0: }
Chris@0: 
Chris@0: WindowType
Chris@0: SpectrogramLayer::getWindowType() const
Chris@0: {
Chris@0:     return m_windowType;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setGain(float gain)
Chris@0: {
Chris@0:     if (m_gain == gain) return; //!!! inadequate for floats!
Chris@0: 
Chris@0:     m_mutex.lock();
Chris@0:     m_cacheInvalid = true;
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     
Chris@0:     m_gain = gain;
Chris@0:     
Chris@0:     m_mutex.unlock();
Chris@9: 
Chris@9:     emit layerParametersChanged();
Chris@9: 
Chris@0:     fillCache();
Chris@0: }
Chris@0: 
Chris@0: float
Chris@0: SpectrogramLayer::getGain() const
Chris@0: {
Chris@0:     return m_gain;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setMaxFrequency(size_t mf)
Chris@0: {
Chris@0:     if (m_maxFrequency == mf) return;
Chris@0: 
Chris@0:     m_mutex.lock();
Chris@1:     // don't need to invalidate main cache here
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     
Chris@0:     m_maxFrequency = mf;
Chris@0:     
Chris@0:     m_mutex.unlock();
Chris@9: 
Chris@9:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: size_t
Chris@0: SpectrogramLayer::getMaxFrequency() const
Chris@0: {
Chris@0:     return m_maxFrequency;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@9: SpectrogramLayer::setColourRotation(int r)
Chris@9: {
Chris@9:     m_mutex.lock();
Chris@9:     // don't need to invalidate main cache here
Chris@9:     m_pixmapCacheInvalid = true;
Chris@9: 
Chris@9:     if (r < 0) r = 0;
Chris@9:     if (r > 256) r = 256;
Chris@9:     int distance = r - m_colourRotation;
Chris@9: 
Chris@9:     if (distance != 0) {
Chris@9: 	rotateCacheColourmap(-distance);
Chris@9: 	m_colourRotation = r;
Chris@9:     }
Chris@9:     
Chris@9:     m_mutex.unlock();
Chris@9: 
Chris@9:     emit layerParametersChanged();
Chris@9: }
Chris@9: 
Chris@9: void
Chris@0: SpectrogramLayer::setColourScale(ColourScale colourScale)
Chris@0: {
Chris@0:     if (m_colourScale == colourScale) return;
Chris@0: 
Chris@0:     m_mutex.lock();
Chris@0:     m_cacheInvalid = true;
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     
Chris@0:     m_colourScale = colourScale;
Chris@0:     
Chris@0:     m_mutex.unlock();
Chris@0:     fillCache();
Chris@9: 
Chris@9:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: SpectrogramLayer::ColourScale
Chris@0: SpectrogramLayer::getColourScale() const
Chris@0: {
Chris@0:     return m_colourScale;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setColourScheme(ColourScheme scheme)
Chris@0: {
Chris@0:     if (m_colourScheme == scheme) return;
Chris@0: 
Chris@0:     m_mutex.lock();
Chris@0:     // don't need to invalidate main cache here
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     
Chris@0:     m_colourScheme = scheme;
Chris@0:     setCacheColourmap();
Chris@9: 
Chris@9:     m_mutex.unlock();
Chris@9: 
Chris@0:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: SpectrogramLayer::ColourScheme
Chris@0: SpectrogramLayer::getColourScheme() const
Chris@0: {
Chris@0:     return m_colourScheme;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setFrequencyScale(FrequencyScale frequencyScale)
Chris@0: {
Chris@0:     if (m_frequencyScale == frequencyScale) return;
Chris@0: 
Chris@0:     m_mutex.lock();
Chris@0:     // don't need to invalidate main cache here
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     
Chris@0:     m_frequencyScale = frequencyScale;
Chris@0:     
Chris@0:     m_mutex.unlock();
Chris@9: 
Chris@9:     emit layerParametersChanged();
Chris@0: }
Chris@0: 
Chris@0: SpectrogramLayer::FrequencyScale
Chris@0: SpectrogramLayer::getFrequencyScale() const
Chris@0: {
Chris@0:     return m_frequencyScale;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::cacheInvalid()
Chris@0: {
Chris@0:     m_cacheInvalid = true;
Chris@0:     m_pixmapCacheInvalid = true;
Chris@0:     m_cachedInitialVisibleArea = false;
Chris@0:     fillCache();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::cacheInvalid(size_t, size_t)
Chris@0: {
Chris@0:     // for now (or forever?)
Chris@0:     cacheInvalid();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::fillCache()
Chris@0: {
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0:     std::cerr << "SpectrogramLayer::fillCache" << std::endl;
Chris@0: #endif
Chris@0:     QMutexLocker locker(&m_mutex);
Chris@0: 
Chris@0:     m_lastFillExtent = 0;
Chris@0: 
Chris@0:     delete m_updateTimer;
Chris@0:     m_updateTimer = new QTimer(this);
Chris@0:     connect(m_updateTimer, SIGNAL(timeout()), this, SLOT(fillTimerTimedOut()));
Chris@0:     m_updateTimer->start(200);
Chris@0: 
Chris@0:     if (!m_fillThread) {
Chris@0: 	std::cerr << "SpectrogramLayer::fillCache creating thread" << std::endl;
Chris@0: 	m_fillThread = new CacheFillThread(*this);
Chris@0: 	m_fillThread->start();
Chris@0:     }
Chris@0: 
Chris@0:     m_condition.wakeAll();
Chris@0: }   
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::fillTimerTimedOut()
Chris@0: {
Chris@0:     if (m_fillThread && m_model) {
Chris@0: 	size_t fillExtent = m_fillThread->getFillExtent();
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0: 	std::cerr << "SpectrogramLayer::fillTimerTimedOut: extent " << fillExtent << ", last " << m_lastFillExtent << ", total " << m_model->getEndFrame() << std::endl;
Chris@0: #endif
Chris@0: 	if (fillExtent >= m_lastFillExtent) {
Chris@0: 	    if (fillExtent >= m_model->getEndFrame() && m_lastFillExtent > 0) {
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0: 		std::cerr << "complete!" << std::endl;
Chris@0: #endif
Chris@0: 		emit modelChanged();
Chris@0: 		m_pixmapCacheInvalid = true;
Chris@0: 		delete m_updateTimer;
Chris@0: 		m_updateTimer = 0;
Chris@0: 		m_lastFillExtent = 0;
Chris@0: 	    } else if (fillExtent > m_lastFillExtent) {
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0: 		std::cerr << "SpectrogramLayer: emitting modelChanged("
Chris@0: 			  << m_lastFillExtent << "," << fillExtent << ")" << std::endl;
Chris@0: #endif
Chris@0: 		emit modelChanged(m_lastFillExtent, fillExtent);
Chris@0: 		m_pixmapCacheInvalid = true;
Chris@0: 		m_lastFillExtent = fillExtent;
Chris@0: 	    }
Chris@0: 	} else {
Chris@0: 	    if (m_view) {
Chris@0: 		size_t sf = 0;
Chris@0: 		if (m_view->getStartFrame() > 0) sf = m_view->getStartFrame();
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0: 		std::cerr << "SpectrogramLayer: going backwards, emitting modelChanged("
Chris@0: 			  << sf << "," << m_view->getEndFrame() << ")" << std::endl;
Chris@0: #endif
Chris@0: 		emit modelChanged(sf, m_view->getEndFrame());
Chris@0: 		m_pixmapCacheInvalid = true;
Chris@0: 	    }
Chris@0: 	    m_lastFillExtent = fillExtent;
Chris@0: 	}
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::setCacheColourmap()
Chris@0: {
Chris@0:     if (m_cacheInvalid || !m_cache) return;
Chris@0: 
Chris@10:     int formerRotation = m_colourRotation;
Chris@10: 
Chris@0:     m_cache->setNumColors(256);
Chris@0:     
Chris@0:     m_cache->setColor(0, qRgb(255, 255, 255));
Chris@0: 
Chris@0:     for (int pixel = 1; pixel < 256; ++pixel) {
Chris@0: 
Chris@0: 	QColor colour;
Chris@0: 	int hue, px;
Chris@0: 
Chris@0: 	switch (m_colourScheme) {
Chris@0: 
Chris@0: 	default:
Chris@0: 	case DefaultColours:
Chris@0: 	    hue = 256 - pixel;
Chris@0: 	    colour = QColor::fromHsv(hue, pixel/2 + 128, pixel);
Chris@0: 	    break;
Chris@0: 
Chris@0: 	case WhiteOnBlack:
Chris@0: 	    colour = QColor(pixel, pixel, pixel);
Chris@0: 	    break;
Chris@0: 
Chris@0: 	case BlackOnWhite:
Chris@0: 	    colour = QColor(256-pixel, 256-pixel, 256-pixel);
Chris@0: 	    break;
Chris@0: 
Chris@0: 	case RedOnBlue:
Chris@0: 	    colour = QColor(pixel > 128 ? (pixel - 128) * 2 : 0, 0,
Chris@0: 			    pixel < 128 ? pixel : (256 - pixel));
Chris@0: 	    break;
Chris@0: 
Chris@0: 	case YellowOnBlack:
Chris@0: 	    px = 256 - pixel;
Chris@0: 	    colour = QColor(px < 64 ? 255 - px/2 :
Chris@0: 			    px < 128 ? 224 - (px - 64) :
Chris@0: 			    px < 192 ? 160 - (px - 128) * 3 / 2 :
Chris@0: 			    256 - px,
Chris@0: 			    pixel,
Chris@0: 			    pixel / 4);
Chris@0: 	    break;
Chris@0: 
Chris@0: 	case RedOnBlack:
Chris@0: 	    colour = QColor::fromHsv(10, pixel, pixel);
Chris@0: 	    break;
Chris@0: 	}
Chris@0: 
Chris@0: 	m_cache->setColor
Chris@0: 	    (pixel, qRgb(colour.red(), colour.green(), colour.blue()));
Chris@0:     }
Chris@9: 
Chris@9:     m_colourRotation = 0;
Chris@10:     rotateCacheColourmap(m_colourRotation - formerRotation);
Chris@10:     m_colourRotation = formerRotation;
Chris@9: }
Chris@9: 
Chris@9: void
Chris@9: SpectrogramLayer::rotateCacheColourmap(int distance)
Chris@9: {
Chris@10:     if (!m_cache) return;
Chris@10: 
Chris@9:     QRgb newPixels[256];
Chris@9: 
Chris@9:     newPixels[0] = m_cache->color(0);
Chris@9: 
Chris@9:     for (int pixel = 1; pixel < 256; ++pixel) {
Chris@9: 	int target = pixel + distance;
Chris@9: 	while (target < 1) target += 255;
Chris@9: 	while (target > 255) target -= 255;
Chris@9: 	newPixels[target] = m_cache->color(pixel);
Chris@9:     }
Chris@9: 
Chris@9:     for (int pixel = 0; pixel < 256; ++pixel) {
Chris@9: 	m_cache->setColor(pixel, newPixels[pixel]);
Chris@9:     }
Chris@0: }
Chris@0: 
Chris@0: bool
Chris@0: SpectrogramLayer::fillCacheColumn(int column, double *input,
Chris@0: 				  fftw_complex *output,
Chris@0: 				  fftw_plan plan, 
Chris@9: 				  size_t windowSize,
Chris@9: 				  size_t increment,
Chris@0: 				  const Window<double> &windower,
Chris@0: 				  bool lock) const
Chris@0: {
Chris@0:     int startFrame = increment * column;
Chris@9:     int endFrame = startFrame + windowSize;
Chris@0: 
Chris@9:     startFrame -= int(windowSize - increment) / 2;
Chris@9:     endFrame   -= int(windowSize - increment) / 2;
Chris@0:     size_t pfx = 0;
Chris@0: 
Chris@0:     if (startFrame < 0) {
Chris@0: 	pfx = size_t(-startFrame);
Chris@0: 	for (size_t i = 0; i < pfx; ++i) {
Chris@0: 	    input[i] = 0.0;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     size_t got = m_model->getValues(m_channel, startFrame + pfx,
Chris@0: 				    endFrame, input + pfx);
Chris@9:     while (got + pfx < windowSize) {
Chris@0: 	input[got + pfx] = 0.0;
Chris@0: 	++got;
Chris@0:     }
Chris@0: 
Chris@0:     if (m_gain != 1.0) {
Chris@9: 	for (size_t i = 0; i < windowSize; ++i) {
Chris@0: 	    input[i] *= m_gain;
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     windower.cut(input);
Chris@0: 
Chris@0:     fftw_execute(plan);
Chris@0: 
Chris@0:     if (lock) m_mutex.lock();
Chris@0:     bool interrupted = false;
Chris@0: 
Chris@9:     for (size_t i = 0; i < windowSize / 2; ++i) {
Chris@0: 
Chris@0: 	int value = 0;
Chris@0: 
Chris@0: 	if (m_colourScale == PhaseColourScale) {
Chris@0: 
Chris@0: 	    double phase = atan2(-output[i][1], output[i][0]);
Chris@0: 	    value = int((phase * 128 / M_PI) + 128);
Chris@0: 
Chris@0: 	} else {
Chris@1: 
Chris@0: 	    double mag = sqrt(output[i][0] * output[i][0] +
Chris@0: 			      output[i][1] * output[i][1]);
Chris@9: 	    mag /= windowSize / 2;
Chris@0: 
Chris@0: 	    switch (m_colourScale) {
Chris@0: 		
Chris@0: 	    default:
Chris@0: 	    case LinearColourScale:
Chris@0: 		value = int(mag * 50 * 256);
Chris@0: 		break;
Chris@0: 		
Chris@0: 	    case MeterColourScale:
Chris@0: 		value = AudioLevel::multiplier_to_preview(mag * 50, 256);
Chris@0: 	    break;
Chris@0: 
Chris@0: 	    case dBColourScale:
Chris@0: 		mag = 20.0 * log10(mag);
Chris@0: 		mag = (mag + 80.0) / 80.0;
Chris@0: 		if (mag < 0.0) mag = 0.0;
Chris@0: 		if (mag > 1.0) mag = 1.0;
Chris@0: 		value = int(mag * 256);
Chris@0: 	    }
Chris@0: 	}
Chris@0: 
Chris@0: 	if (value > 254) value = 254;
Chris@0: 	if (value < 0) value = 0;
Chris@0: 
Chris@0: 	if (m_cacheInvalid || m_exiting) {
Chris@0: 	    interrupted = true;
Chris@0: 	    break;
Chris@0: 	}
Chris@0: 
Chris@1: 	if (column < m_cache->width() && (int)i < m_cache->height()) {
Chris@0: 	    m_cache->setPixel(column, i, value + 1); // 0 is "unset"
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     if (lock) m_mutex.unlock();
Chris@0:     return !interrupted;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::CacheFillThread::run()
Chris@0: {
Chris@0: //    std::cerr << "SpectrogramLayer::CacheFillThread::run" << std::endl;
Chris@0: 
Chris@0:     m_layer.m_mutex.lock();
Chris@0: 
Chris@0:     while (!m_layer.m_exiting) {
Chris@0: 
Chris@0: 	bool interrupted = false;
Chris@0: 
Chris@0: //	std::cerr << "SpectrogramLayer::CacheFillThread::run in loop" << std::endl;
Chris@0: 
Chris@1: 	if (m_layer.m_model && m_layer.m_cacheInvalid) {
Chris@0: 
Chris@0: //	    std::cerr << "SpectrogramLayer::CacheFillThread::run: something to do" << std::endl;
Chris@0: 
Chris@0: 	    while (!m_layer.m_model->isReady()) {
Chris@0: 		m_layer.m_condition.wait(&m_layer.m_mutex, 100);
Chris@0: 	    }
Chris@0: 
Chris@0: 	    m_layer.m_cachedInitialVisibleArea = false;
Chris@0: 	    m_layer.m_cacheInvalid = false;
Chris@0: 	    m_fillExtent = 0;
Chris@0: 	    m_fillCompletion = 0;
Chris@0: 
Chris@0: 	    std::cerr << "SpectrogramLayer::CacheFillThread::run: model is ready" << std::endl;
Chris@0: 
Chris@0: 	    size_t start = m_layer.m_model->getStartFrame();
Chris@0: 	    size_t end = m_layer.m_model->getEndFrame();
Chris@9: 
Chris@9: 	    WindowType windowType = m_layer.m_windowType;
Chris@0: 	    size_t windowSize = m_layer.m_windowSize;
Chris@0: 	    size_t windowIncrement = m_layer.getWindowIncrement();
Chris@0: 
Chris@0: 	    size_t visibleStart = start;
Chris@0: 	    size_t visibleEnd = end;
Chris@0: 
Chris@0: 	    if (m_layer.m_view) {
Chris@0: 		if (m_layer.m_view->getStartFrame() < 0) {
Chris@0: 		    visibleStart = 0;
Chris@0: 		} else {
Chris@0: 		    visibleStart = m_layer.m_view->getStartFrame();
Chris@0: 		    visibleStart = (visibleStart / windowIncrement) *
Chris@0: 			windowIncrement;
Chris@0: 		}
Chris@0: 		visibleEnd = m_layer.m_view->getEndFrame();
Chris@0: 	    }
Chris@0: 
Chris@0: 	    delete m_layer.m_cache;
Chris@9: 	    size_t width = (end - start) / windowIncrement + 1;
Chris@9: 	    size_t height = windowSize / 2;
Chris@9: 	    m_layer.m_cache = new QImage(width, height,
Chris@9: 					 QImage::Format_Indexed8);
Chris@9: 
Chris@9: 	    // If we're using JACK in mlock mode, this will be locked
Chris@9: 	    // and we ought to unlock to avoid memory exhaustion.
Chris@9: 	    // Shame it doesn't appear to be possible to allocate
Chris@9: 	    // unlocked in the first place.
Chris@9: 	    //!!! hm, I don't think this is working.
Chris@9: 	    MUNLOCK((void *)m_layer.m_cache, width * height);
Chris@0:     
Chris@0: 	    m_layer.setCacheColourmap();
Chris@10: 
Chris@0: 	    m_layer.m_cache->fill(0);
Chris@0: 	    m_layer.m_mutex.unlock();
Chris@0: 
Chris@0: 	    double *input = (double *)
Chris@0: 		fftw_malloc(windowSize * sizeof(double));
Chris@0: 
Chris@0: 	    fftw_complex *output = (fftw_complex *)
Chris@0: 		fftw_malloc(windowSize * sizeof(fftw_complex));
Chris@0: 
Chris@0: 	    fftw_plan plan = fftw_plan_dft_r2c_1d(windowSize, input,
Chris@1: 						  output, FFTW_ESTIMATE);
Chris@0: 
Chris@9: 	    Window<double> windower(windowType, windowSize);
Chris@0: 
Chris@0: 	    if (!plan) {
Chris@1: 		std::cerr << "WARNING: fftw_plan_dft_r2c_1d(" << windowSize << ") failed!" << std::endl;
Chris@0: 		fftw_free(input);
Chris@0: 		fftw_free(output);
Chris@0: 		m_layer.m_mutex.lock();
Chris@0: 		continue;
Chris@0: 	    }
Chris@0: 
Chris@0: 	    int counter = 0;
Chris@0: 	    int updateAt = (end / windowIncrement) / 20;
Chris@0: 	    if (updateAt < 100) updateAt = 100;
Chris@0: 
Chris@0: 	    bool doVisibleFirst = (visibleStart != start && visibleEnd != end);
Chris@0: 
Chris@0: 	    if (doVisibleFirst) {
Chris@0: 
Chris@0: 		m_layer.m_mutex.lock();
Chris@0: 
Chris@0: 		for (size_t f = visibleStart; f < visibleEnd; f += windowIncrement) {
Chris@0: 	    
Chris@0: 		    m_layer.fillCacheColumn(int((f - start) / windowIncrement),
Chris@9: 					    input, output, plan,
Chris@9: 					    windowSize, windowIncrement,
Chris@9: 					    windower, false);
Chris@0: 
Chris@0: 		    m_layer.m_mutex.unlock();
Chris@0: 		    m_layer.m_mutex.lock();
Chris@0: 
Chris@0: 		    if (m_layer.m_cacheInvalid || m_layer.m_exiting) {
Chris@0: 			interrupted = true;
Chris@0: 			m_fillExtent = 0;
Chris@0: 			break;
Chris@0: 		    }
Chris@0: 
Chris@0: 		    if (++counter == updateAt) {
Chris@0: 			if (f < end) m_fillExtent = f;
Chris@0: 			m_fillCompletion = size_t(100 * fabsf(float(f - visibleStart) /
Chris@0: 							      float(end - start)));
Chris@0: 			counter = 0;
Chris@0: 		    }
Chris@0: 		}
Chris@0: 
Chris@0: 		m_layer.m_mutex.unlock();
Chris@0: 	    }
Chris@0: 
Chris@0: 	    m_layer.m_cachedInitialVisibleArea = true;
Chris@0: 
Chris@0: 	    if (!interrupted && doVisibleFirst) {
Chris@0: 		
Chris@0: 		for (size_t f = visibleEnd; f < end; f += windowIncrement) {
Chris@0: 	    
Chris@0: 		    if (!m_layer.fillCacheColumn(int((f - start) / windowIncrement),
Chris@9: 						 input, output, plan,
Chris@9: 						 windowSize, windowIncrement,
Chris@9: 						 windower, true)) {
Chris@0: 			interrupted = true;
Chris@0: 			m_fillExtent = 0;
Chris@0: 			break;
Chris@0: 		    }
Chris@0: 
Chris@0: 
Chris@0: 		    if (++counter == updateAt) {
Chris@0: 			if (f < end) m_fillExtent = f;
Chris@0: 			m_fillCompletion = size_t(100 * fabsf(float(f - visibleStart) /
Chris@0: 							      float(end - start)));
Chris@0: 			counter = 0;
Chris@0: 		    }
Chris@0: 		}
Chris@0: 	    }
Chris@0: 
Chris@0: 	    if (!interrupted) {
Chris@0: 
Chris@0: 		size_t remainingEnd = end;
Chris@0: 		if (doVisibleFirst) {
Chris@0: 		    remainingEnd = visibleStart;
Chris@0: 		    if (remainingEnd > start) --remainingEnd;
Chris@0: 		    else remainingEnd = start;
Chris@0: 		}
Chris@0: 		size_t baseCompletion = m_fillCompletion;
Chris@0: 
Chris@0: 		for (size_t f = start; f < remainingEnd; f += windowIncrement) {
Chris@0: 
Chris@0: 		    if (!m_layer.fillCacheColumn(int((f - start) / windowIncrement),
Chris@9: 						 input, output, plan,
Chris@9: 						 windowSize, windowIncrement,
Chris@9: 						 windower, true)) {
Chris@0: 			interrupted = true;
Chris@0: 			m_fillExtent = 0;
Chris@0: 			break;
Chris@0: 		    }
Chris@0: 		    
Chris@0: 		    if (++counter == updateAt) {
Chris@0: 			m_fillExtent = f;
Chris@0: 			m_fillCompletion = baseCompletion +
Chris@0: 			    size_t(100 * fabsf(float(f - start) /
Chris@0: 					       float(end - start)));
Chris@0: 			counter = 0;
Chris@0: 		    }
Chris@0: 		}
Chris@0: 	    }
Chris@0: 
Chris@0: 	    fftw_destroy_plan(plan);
Chris@0: 	    fftw_free(output);
Chris@0: 	    fftw_free(input);
Chris@0: 
Chris@0: 	    if (!interrupted) {
Chris@0: 		m_fillExtent = end;
Chris@0: 		m_fillCompletion = 100;
Chris@0: 	    }
Chris@0: 
Chris@0: 	    m_layer.m_mutex.lock();
Chris@0: 	}
Chris@0: 
Chris@0: 	if (!interrupted) m_layer.m_condition.wait(&m_layer.m_mutex, 2000);
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: bool
Chris@0: SpectrogramLayer::getYBinRange(int y, float &q0, float &q1) const
Chris@0: {
Chris@0:     int h = m_view->height();
Chris@0:     if (y < 0 || y >= h) return false;
Chris@0: 
Chris@0:     // Each pixel in a column is drawn from a possibly non-
Chris@0:     // integral set of frequency bins.
Chris@0: 
Chris@0:     if (m_frequencyScale == LinearFrequencyScale) {
Chris@0: 
Chris@0: 	size_t bins = m_windowSize / 2;
Chris@0:     
Chris@0: 	if (m_maxFrequency > 0) {
Chris@0: 	    int sr = m_model->getSampleRate();
Chris@0: 	    bins = int((double(m_maxFrequency) * m_windowSize) / sr + 0.1);
Chris@0: 	    if (bins > m_windowSize / 2) bins = m_windowSize / 2;
Chris@0: 	}
Chris@0: 	
Chris@0: 	q0 = float(h - y - 1) * bins / h;
Chris@0: 	q1 = float(h - y) * bins / h;
Chris@0: 
Chris@0:     } else {
Chris@0: 
Chris@0: 	// This is all most ad-hoc.  I'm not at my brightest.
Chris@0: 
Chris@0: 	int sr = m_model->getSampleRate();
Chris@0: 
Chris@0: 	float maxf = m_maxFrequency;
Chris@0: 	if (maxf == 0.0) maxf = float(sr) / 2;
Chris@0: 
Chris@0: 	float minf = float(sr) / m_windowSize;
Chris@0: 	
Chris@0: 	float maxlogf = log10f(maxf);
Chris@0: 	float minlogf = log10f(minf);
Chris@0: 
Chris@0: 	float logf0 = minlogf + ((maxlogf - minlogf) * (h - y - 1)) / h;
Chris@0: 	float logf1 = minlogf + ((maxlogf - minlogf) * (h - y)) / h;
Chris@0: 	
Chris@0: 	float f0 = pow(10.f, logf0);
Chris@0: 	float f1 = pow(10.f, logf1);
Chris@0: 
Chris@0: 	q0 = ((f0 * m_windowSize) / sr) - 1;
Chris@0: 	q1 = ((f1 * m_windowSize) / sr) - 1;
Chris@0: 
Chris@0: //	std::cout << "y=" << y << " h=" << h << " maxf=" << maxf << " maxlogf="
Chris@0: //		  << maxlogf << " logf0=" << logf0 << " f0=" << f0 << " q0="
Chris@0: //		  << q0 << std::endl;
Chris@0:     }	
Chris@0: 
Chris@0:     return true;
Chris@0: }
Chris@0: 
Chris@0: bool
Chris@20: SpectrogramLayer::getXBinRange(int x, float &s0, float &s1) const
Chris@0: {
Chris@21:     size_t modelStart = m_model->getStartFrame();
Chris@21:     size_t modelEnd = m_model->getEndFrame();
Chris@0: 
Chris@0:     // Each pixel column covers an exact range of sample frames:
Chris@20:     int f0 = getFrameForX(x) - modelStart;
Chris@20:     int f1 = getFrameForX(x + 1) - modelStart - 1;
Chris@20: 
Chris@0:     if (f1 < int(modelStart) || f0 > int(modelEnd)) return false;
Chris@20:       
Chris@0:     // And that range may be drawn from a possibly non-integral
Chris@0:     // range of spectrogram windows:
Chris@0: 
Chris@0:     size_t windowIncrement = getWindowIncrement();
Chris@0:     s0 = float(f0) / windowIncrement;
Chris@0:     s1 = float(f1) / windowIncrement;
Chris@0: 
Chris@0:     return true;
Chris@0: }
Chris@0:  
Chris@0: bool
Chris@0: SpectrogramLayer::getXBinSourceRange(int x, RealTime &min, RealTime &max) const
Chris@0: {
Chris@0:     float s0 = 0, s1 = 0;
Chris@0:     if (!getXBinRange(x, s0, s1)) return false;
Chris@0:     
Chris@0:     int s0i = int(s0 + 0.001);
Chris@0:     int s1i = int(s1);
Chris@0: 
Chris@0:     int windowIncrement = getWindowIncrement();
Chris@0:     int w0 = s0i * windowIncrement - (m_windowSize - windowIncrement)/2;
Chris@0:     int w1 = s1i * windowIncrement + windowIncrement +
Chris@0: 	(m_windowSize - windowIncrement)/2 - 1;
Chris@0:     
Chris@0:     min = RealTime::frame2RealTime(w0, m_model->getSampleRate());
Chris@0:     max = RealTime::frame2RealTime(w1, m_model->getSampleRate());
Chris@0:     return true;
Chris@0: }
Chris@0: 
Chris@0: bool
Chris@0: SpectrogramLayer::getYBinSourceRange(int y, float &freqMin, float &freqMax)
Chris@0: const
Chris@0: {
Chris@0:     float q0 = 0, q1 = 0;
Chris@0:     if (!getYBinRange(y, q0, q1)) return false;
Chris@0: 
Chris@0:     int q0i = int(q0 + 0.001);
Chris@0:     int q1i = int(q1);
Chris@0: 
Chris@0:     int sr = m_model->getSampleRate();
Chris@0: 
Chris@0:     for (int q = q0i; q <= q1i; ++q) {
Chris@0: 	int binfreq = (sr * (q + 1)) / m_windowSize;
Chris@0: 	if (q == q0i) freqMin = binfreq;
Chris@0: 	if (q == q1i) freqMax = binfreq;
Chris@0:     }
Chris@0:     return true;
Chris@0: }
Chris@0:     
Chris@0: bool
Chris@0: SpectrogramLayer::getXYBinSourceRange(int x, int y, float &dbMin, float &dbMax) const
Chris@0: {
Chris@0:     float q0 = 0, q1 = 0;
Chris@0:     if (!getYBinRange(y, q0, q1)) return false;
Chris@0: 
Chris@0:     float s0 = 0, s1 = 0;
Chris@0:     if (!getXBinRange(x, s0, s1)) return false;
Chris@0:     
Chris@0:     int q0i = int(q0 + 0.001);
Chris@0:     int q1i = int(q1);
Chris@0: 
Chris@0:     int s0i = int(s0 + 0.001);
Chris@0:     int s1i = int(s1);
Chris@0: 
Chris@0:     if (m_mutex.tryLock()) {
Chris@0: 	if (m_cache && !m_cacheInvalid) {
Chris@0: 
Chris@0: 	    int cw = m_cache->width();
Chris@0: 	    int ch = m_cache->height();
Chris@0: 
Chris@0: 	    int min = -1, max = -1;
Chris@0: 
Chris@0: 	    for (int q = q0i; q <= q1i; ++q) {
Chris@0: 		for (int s = s0i; s <= s1i; ++s) {
Chris@0: 		    if (s >= 0 && q >= 0 && s < cw && q < ch) {
Chris@0: 			int value = m_cache->scanLine(q)[s];
Chris@0: 			if (min == -1 || value < min) min = value;
Chris@0: 			if (max == -1 || value > max) max = value;
Chris@0: 		    }	
Chris@0: 		}
Chris@0: 	    }
Chris@0: 
Chris@0: 	    if (min < 0) return false;
Chris@0: 
Chris@0: 	    dbMin = (float(min) / 256.0) * 80.0 - 80.0;
Chris@0: 	    dbMax = (float(max + 1) / 256.0) * 80.0 - 80.1;
Chris@0: 
Chris@0: 	    m_mutex.unlock();
Chris@0: 	    return true;
Chris@0: 	}
Chris@0: 
Chris@0: 	m_mutex.unlock();
Chris@0:     }
Chris@0: 
Chris@0:     return false;
Chris@0: }
Chris@0:    
Chris@0: void
Chris@0: SpectrogramLayer::paint(QPainter &paint, QRect rect) const
Chris@0: {
Chris@0: //    Profiler profiler("SpectrogramLayer::paint", true);
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0:     std::cerr << "SpectrogramLayer::paint(): m_model is " << m_model << ", zoom level is " << m_view->getZoomLevel() << ", m_updateTimer " << m_updateTimer << ", pixmap cache invalid " << m_pixmapCacheInvalid << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0:     if (!m_model || !m_model->isOK() || !m_model->isReady()) {
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0:     std::cerr << "SpectrogramLayer::paint(): About to lock" << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: /*
Chris@0:     if (m_cachedInitialVisibleArea) {
Chris@0: 	if (!m_mutex.tryLock()) {
Chris@0: 	    m_view->update();
Chris@0: 	    return;
Chris@0: 	}
Chris@0:     } else {
Chris@0: */
Chris@0: 	m_mutex.lock();
Chris@0: //    }
Chris@0: 
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0:     std::cerr << "SpectrogramLayer::paint(): locked" << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0:     if (m_cacheInvalid) { // lock the mutex before checking this
Chris@0: 	m_mutex.unlock();
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0: 	std::cerr << "SpectrogramLayer::paint(): Cache invalid, returning" << std::endl;
Chris@0: #endif
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     bool stillCacheing = (m_updateTimer != 0);
Chris@0: 
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0:     std::cerr << "SpectrogramLayer::paint(): Still cacheing = " << stillCacheing << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0:     long startFrame = m_view->getStartFrame();
Chris@0:     int zoomLevel = m_view->getZoomLevel();
Chris@0: 
Chris@0:     int x0 = 0;
Chris@0:     int x1 = m_view->width();
Chris@0:     int y0 = 0;
Chris@0:     int y1 = m_view->height();
Chris@0: 
Chris@0:     bool recreateWholePixmapCache = true;
Chris@0: 
Chris@0:     if (!m_pixmapCacheInvalid) {
Chris@0: 
Chris@0: 	//!!! This cache may have been obsoleted entirely by the
Chris@0: 	//scrolling cache in View.  Perhaps experiment with
Chris@0: 	//removing it and see if it makes things even quicker (or else
Chris@0: 	//make it optional)
Chris@0: 
Chris@0: 	if (int(m_pixmapCacheZoomLevel) == zoomLevel &&
Chris@0: 	    m_pixmapCache->width() == m_view->width() &&
Chris@0: 	    m_pixmapCache->height() == m_view->height()) {
Chris@0: 
Chris@20: 	    if (getXForFrame(m_pixmapCacheStartFrame) ==
Chris@20: 		getXForFrame(startFrame)) {
Chris@0: 	    
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0: 		std::cerr << "SpectrogramLayer: pixmap cache good" << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: 		m_mutex.unlock();
Chris@0: 		paint.drawPixmap(rect, *m_pixmapCache, rect);
Chris@0: 		return;
Chris@0: 
Chris@0: 	    } else {
Chris@0: 
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0: 		std::cerr << "SpectrogramLayer: pixmap cache partially OK" << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: 		recreateWholePixmapCache = false;
Chris@0: 
Chris@20: 		int dx = getXForFrame(m_pixmapCacheStartFrame) -
Chris@20: 		         getXForFrame(startFrame);
Chris@0: 
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0: 		std::cerr << "SpectrogramLayer: dx = " << dx << " (pixmap cache " << m_pixmapCache->width() << "x" << m_pixmapCache->height() << ")" << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0: 		if (dx > -m_pixmapCache->width() && dx < m_pixmapCache->width()) {
Chris@0: 
Chris@0: #if defined(Q_WS_WIN32) || defined(Q_WS_MAC)
Chris@0: 		    // Copying a pixmap to itself doesn't work
Chris@0: 		    // properly on Windows or Mac (it only works when
Chris@0: 		    // moving in one direction).
Chris@0: 
Chris@0: 		    //!!! Need a utility function for this
Chris@0: 
Chris@0: 		    static QPixmap *tmpPixmap = 0;
Chris@0: 		    if (!tmpPixmap ||
Chris@0: 			tmpPixmap->width() != m_pixmapCache->width() ||
Chris@0: 			tmpPixmap->height() != m_pixmapCache->height()) {
Chris@0: 			delete tmpPixmap;
Chris@0: 			tmpPixmap = new QPixmap(m_pixmapCache->width(),
Chris@0: 						m_pixmapCache->height());
Chris@0: 		    }
Chris@0: 		    QPainter cachePainter;
Chris@0: 		    cachePainter.begin(tmpPixmap);
Chris@0: 		    cachePainter.drawPixmap(0, 0, *m_pixmapCache);
Chris@0: 		    cachePainter.end();
Chris@0: 		    cachePainter.begin(m_pixmapCache);
Chris@0: 		    cachePainter.drawPixmap(dx, 0, *tmpPixmap);
Chris@0: 		    cachePainter.end();
Chris@0: #else
Chris@0: 		    QPainter cachePainter(m_pixmapCache);
Chris@0: 		    cachePainter.drawPixmap(dx, 0, *m_pixmapCache);
Chris@0: 		    cachePainter.end();
Chris@0: #endif
Chris@0: 
Chris@0: 		    paint.drawPixmap(rect, *m_pixmapCache, rect);
Chris@0: 
Chris@0: 		    if (dx < 0) {
Chris@0: 			x0 = m_pixmapCache->width() + dx;
Chris@0: 			x1 = m_pixmapCache->width();
Chris@0: 		    } else {
Chris@0: 			x0 = 0;
Chris@0: 			x1 = dx;
Chris@0: 		    }
Chris@0: 		}
Chris@0: 	    }
Chris@0: 	} else {
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0: 	    std::cerr << "SpectrogramLayer: pixmap cache useless" << std::endl;
Chris@0: #endif
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     if (stillCacheing) {
Chris@0: 	x0 = rect.left();
Chris@0: 	x1 = rect.right() + 1;
Chris@0: 	y0 = rect.top();
Chris@0: 	y1 = rect.bottom() + 1;
Chris@0:     }
Chris@0: 
Chris@0:     int w = x1 - x0;
Chris@0:     int h = y1 - y0;
Chris@0: 
Chris@0: //    std::cerr << "x0 " << x0 << ", x1 " << x1 << ", w " << w << ", h " << h << std::endl;
Chris@0: 
Chris@0:     QImage scaled(w, h, QImage::Format_RGB32);
Chris@0: 
Chris@0:     m_mutex.unlock();
Chris@0: 
Chris@0:     for (int y = 0; y < h; ++y) {
Chris@0: 
Chris@0: 	m_mutex.lock();
Chris@0: 	if (m_cacheInvalid) {
Chris@0: 	    m_mutex.unlock();
Chris@0: 	    break;
Chris@0: 	}
Chris@0: 
Chris@0: 	int cw = m_cache->width();
Chris@0: 	int ch = m_cache->height();
Chris@0: 
Chris@0: 	float q0 = 0, q1 = 0;
Chris@0: 
Chris@0: 	if (!getYBinRange(y0 + y, q0, q1)) {
Chris@0: 	    for (int x = 0; x < w; ++x) {
Chris@0: 		assert(x <= scaled.width());
Chris@0: 		scaled.setPixel(x, y, qRgb(0, 0, 0));
Chris@0: 	    }
Chris@0: 	    m_mutex.unlock();
Chris@0: 	    continue;
Chris@0: 	}
Chris@0: 
Chris@0: 	int q0i = int(q0 + 0.001);
Chris@0: 	int q1i = int(q1);
Chris@0: 
Chris@0: 	for (int x = 0; x < w; ++x) {
Chris@0: 
Chris@0: 	    float s0 = 0, s1 = 0;
Chris@0: 
Chris@20: 	    if (!getXBinRange(x0 + x, s0, s1)) {
Chris@0: 		assert(x <= scaled.width());
Chris@0: 		scaled.setPixel(x, y, qRgb(0, 0, 0));
Chris@0: 		continue;
Chris@0: 	    }
Chris@0: 
Chris@0: 	    int s0i = int(s0 + 0.001);
Chris@0: 	    int s1i = int(s1);
Chris@0: 
Chris@0: 	    float total = 0, divisor = 0;
Chris@0: 
Chris@0: 	    for (int s = s0i; s <= s1i; ++s) {
Chris@0: 
Chris@0: 		float sprop = 1.0;
Chris@0: 		if (s == s0i) sprop *= (s + 1) - s0;
Chris@0: 		if (s == s1i) sprop *= s1 - s;
Chris@0: 
Chris@0: 		for (int q = q0i; q <= q1i; ++q) {
Chris@0: 
Chris@0: 		    float qprop = sprop;
Chris@0: 		    if (q == q0i) qprop *= (q + 1) - q0;
Chris@0: 		    if (q == q1i) qprop *= q1 - q;
Chris@0: 
Chris@0: 		    if (s >= 0 && q >= 0 && s < cw && q < ch) {
Chris@0: 			total += qprop * m_cache->scanLine(q)[s];
Chris@0: 			divisor += qprop;
Chris@0: 		    }
Chris@0: 		}
Chris@0: 	    }
Chris@0: 		    
Chris@0: 	    if (divisor > 0.0) {
Chris@10: /*
Chris@0: 		int pixel = int(total / divisor);
Chris@0: 		if (pixel > 255) pixel = 255;
Chris@0: 		if (pixel < 1) pixel = 1;
Chris@0: 		assert(x <= scaled.width());
Chris@0: 		scaled.setPixel(x, y, m_cache->color(pixel));
Chris@10: */
Chris@9: 		float pixel = total / divisor;
Chris@9: 		float lq = pixel - int(pixel);
Chris@9: 		float hq = int(pixel) + 1 - pixel;
Chris@9: 		int pixNum = int(pixel);
Chris@9: 		QRgb low = m_cache->color(pixNum > 255 ? 255 : pixNum);
Chris@9: 		QRgb high = m_cache->color(pixNum > 254 ? 255 : pixNum + 1);
Chris@9: 		QRgb mixed = qRgb
Chris@9: 		    (qRed(low) * lq + qRed(high) * hq + 0.01,
Chris@9: 		     qGreen(low) * lq + qGreen(high) * hq + 0.01,
Chris@9: 		     qBlue(low) * lq + qBlue(high) * hq + 0.01);
Chris@9: 		scaled.setPixel(x, y, mixed);
Chris@10: 
Chris@0: 	    } else {
Chris@0: 		assert(x <= scaled.width());
Chris@0: 		scaled.setPixel(x, y, qRgb(0, 0, 0));
Chris@0: 	    }
Chris@0: 	}
Chris@0: 
Chris@0: 	m_mutex.unlock();
Chris@0:     }
Chris@0: 
Chris@0:     paint.drawImage(x0, y0, scaled);
Chris@0: 
Chris@0:     if (recreateWholePixmapCache) {
Chris@0: 	delete m_pixmapCache;
Chris@0: 	m_pixmapCache = new QPixmap(w, h);
Chris@0:     }
Chris@0: 
Chris@0:     QPainter cachePainter(m_pixmapCache);
Chris@0:     cachePainter.drawImage(x0, y0, scaled);
Chris@0:     cachePainter.end();
Chris@0:     
Chris@0:     m_pixmapCacheInvalid = false;
Chris@0:     m_pixmapCacheStartFrame = startFrame;
Chris@0:     m_pixmapCacheZoomLevel = zoomLevel;
Chris@0: 
Chris@0: #ifdef DEBUG_SPECTROGRAM_REPAINT
Chris@0:     std::cerr << "SpectrogramLayer::paint() returning" << std::endl;
Chris@0: #endif
Chris@0: }
Chris@0: 
Chris@0: int
Chris@0: SpectrogramLayer::getCompletion() const
Chris@0: {
Chris@0:     if (m_updateTimer == 0) return 100;
Chris@0:     size_t completion = m_fillThread->getFillCompletion();
Chris@0: //    std::cerr << "SpectrogramLayer::getCompletion: completion = " << completion << std::endl;
Chris@0:     return completion;
Chris@0: }
Chris@0: 
Chris@28: bool
Chris@28: SpectrogramLayer::snapToFeatureFrame(int &frame,
Chris@28: 				     size_t &resolution,
Chris@28: 				     SnapType snap) const
Chris@13: {
Chris@13:     resolution = getWindowIncrement();
Chris@28:     int left = (frame / resolution) * resolution;
Chris@28:     int right = left + resolution;
Chris@28: 
Chris@28:     switch (snap) {
Chris@28:     case SnapLeft:  frame = left;  break;
Chris@28:     case SnapRight: frame = right; break;
Chris@28:     case SnapNearest:
Chris@28:     case SnapNeighbouring:
Chris@28: 	if (frame - left > right - frame) frame = right;
Chris@28: 	else frame = left;
Chris@28: 	break;
Chris@28:     }
Chris@28:     
Chris@28:     return true;
Chris@28: } 
Chris@13: 
Chris@25: QString
Chris@25: SpectrogramLayer::getFeatureDescription(QPoint &pos) const
Chris@25: {
Chris@25:     int x = pos.x();
Chris@25:     int y = pos.y();
Chris@0: 
Chris@25:     if (!m_model || !m_model->isOK()) return "";
Chris@0: 
Chris@0:     float dbMin = 0, dbMax = 0;
Chris@0:     float freqMin = 0, freqMax = 0;
Chris@25:     QString pitchMin, pitchMax;
Chris@0:     RealTime rtMin, rtMax;
Chris@0: 
Chris@25:     bool haveDb = false;
Chris@0: 
Chris@25:     if (!getXBinSourceRange(x, rtMin, rtMax)) return "";
Chris@25:     if (!getYBinSourceRange(y, freqMin, freqMax)) return "";
Chris@25:     if (getXYBinSourceRange(x, y, dbMin, dbMax)) haveDb = true;
Chris@0: 
Chris@25:     //!!! want to actually do a one-off FFT to recalculate the dB value!
Chris@25: 
Chris@25:     QString text;
Chris@25: 
Chris@25:     if (rtMin != rtMax) {
Chris@25: 	text += tr("Time:\t%1 - %2\n")
Chris@25: 	    .arg(rtMin.toText(true).c_str())
Chris@25: 	    .arg(rtMax.toText(true).c_str());
Chris@25:     } else {
Chris@25: 	text += tr("Time:\t%1\n")
Chris@25: 	    .arg(rtMin.toText(true).c_str());
Chris@0:     }
Chris@0: 
Chris@25:     if (freqMin != freqMax) {
Chris@25: 	text += tr("Frequency:\t%1 - %2 Hz\nPitch:\t%3 - %4\n")
Chris@25: 	    .arg(freqMin)
Chris@25: 	    .arg(freqMax)
Chris@25: 	    .arg(Pitch::getPitchLabelForFrequency(freqMin))
Chris@25: 	    .arg(Pitch::getPitchLabelForFrequency(freqMax));
Chris@25:     } else {
Chris@25: 	text += tr("Frequency:\t%1 Hz\nPitch:\t%2\n")
Chris@25: 	    .arg(freqMin)
Chris@25: 	    .arg(Pitch::getPitchLabelForFrequency(freqMin));
Chris@25:     }	
Chris@25: 
Chris@25:     if (haveDb) {
Chris@25: 	if (lrintf(dbMin) != lrintf(dbMax)) {
Chris@25: 	    text += tr("dB:\t%1 - %2").arg(lrintf(dbMin)).arg(lrintf(dbMax));
Chris@25: 	} else {
Chris@25: 	    text += tr("dB:\t%1").arg(lrintf(dbMin));
Chris@25: 	}
Chris@25:     }
Chris@25: 
Chris@25:     return text;
Chris@0: }
Chris@25: 
Chris@0: int
Chris@0: SpectrogramLayer::getVerticalScaleWidth(QPainter &paint) const
Chris@0: {
Chris@0:     if (!m_model || !m_model->isOK()) return 0;
Chris@0: 
Chris@0:     int tw = paint.fontMetrics().width(QString("%1")
Chris@0: 				     .arg(m_maxFrequency > 0 ?
Chris@0: 					  m_maxFrequency - 1 :
Chris@0: 					  m_model->getSampleRate() / 2));
Chris@0: 
Chris@0:     int fw = paint.fontMetrics().width(QString("43Hz"));
Chris@0:     if (tw < fw) tw = fw;
Chris@0:     
Chris@0:     return tw + 13;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: SpectrogramLayer::paintVerticalScale(QPainter &paint, QRect rect) const
Chris@0: {
Chris@0:     if (!m_model || !m_model->isOK()) {
Chris@0: 	return;
Chris@0:     }
Chris@0: 
Chris@0:     int h = rect.height(), w = rect.width();
Chris@0: 
Chris@0:     size_t bins = m_windowSize / 2;
Chris@0:     int sr = m_model->getSampleRate();
Chris@0: 
Chris@0:     if (m_maxFrequency > 0) {
Chris@0: 	bins = int((double(m_maxFrequency) * m_windowSize) / sr + 0.1);
Chris@0: 	if (bins > m_windowSize / 2) bins = m_windowSize / 2;
Chris@0:     }
Chris@0: 
Chris@0:     int py = -1;
Chris@0:     int textHeight = paint.fontMetrics().height();
Chris@0:     int toff = -textHeight + paint.fontMetrics().ascent() + 2;
Chris@0: 
Chris@0:     int bin = -1;
Chris@0: 
Chris@0:     for (int y = 0; y < m_view->height(); ++y) {
Chris@0: 
Chris@0: 	float q0, q1;
Chris@0: 	if (!getYBinRange(m_view->height() - y, q0, q1)) continue;
Chris@0: 
Chris@0: 	int vy;
Chris@0: 
Chris@0: 	if (int(q0) > bin) {
Chris@0: 	    vy = y;
Chris@0: 	    bin = int(q0);
Chris@0: 	} else {
Chris@0: 	    continue;
Chris@0: 	}
Chris@0: 
Chris@0: 	int freq = (sr * (bin + 1)) / m_windowSize;
Chris@0: 
Chris@0: 	if (py >= 0 && (vy - py) < textHeight - 1) {
Chris@0: 	    paint.drawLine(w - 4, h - vy, w, h - vy);
Chris@0: 	    continue;
Chris@0: 	}
Chris@0: 
Chris@0: 	QString text = QString("%1").arg(freq);
Chris@0: 	if (bin == 0) text = QString("%1Hz").arg(freq);
Chris@0: 	paint.drawLine(0, h - vy, w, h - vy);
Chris@0: 
Chris@0: 	if (h - vy - textHeight >= -2) {
Chris@0: 	    int tx = w - 10 - paint.fontMetrics().width(text);
Chris@0: 	    paint.drawText(tx, h - vy + toff, text);
Chris@0: 	}
Chris@0: 
Chris@0: 	py = vy;
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@6: QString
Chris@6: SpectrogramLayer::toXmlString(QString indent, QString extraAttributes) const
Chris@6: {
Chris@6:     QString s;
Chris@6:     
Chris@6:     s += QString("channel=\"%1\" "
Chris@6: 		 "windowSize=\"%2\" "
Chris@6: 		 "windowType=\"%3\" "
Chris@6: 		 "windowOverlap=\"%4\" "
Chris@6: 		 "gain=\"%5\" "
Chris@6: 		 "maxFrequency=\"%6\" "
Chris@6: 		 "colourScale=\"%7\" "
Chris@6: 		 "colourScheme=\"%8\" "
Chris@6: 		 "frequencyScale=\"%9\"")
Chris@6: 	.arg(m_channel)
Chris@6: 	.arg(m_windowSize)
Chris@6: 	.arg(m_windowType)
Chris@6: 	.arg(m_windowOverlap)
Chris@6: 	.arg(m_gain)
Chris@6: 	.arg(m_maxFrequency)
Chris@6: 	.arg(m_colourScale)
Chris@6: 	.arg(m_colourScheme)
Chris@6: 	.arg(m_frequencyScale);
Chris@6: 
Chris@6:     return Layer::toXmlString(indent, extraAttributes + " " + s);
Chris@6: }
Chris@6: 
Chris@11: void
Chris@11: SpectrogramLayer::setProperties(const QXmlAttributes &attributes)
Chris@11: {
Chris@11:     bool ok = false;
Chris@11: 
Chris@11:     int channel = attributes.value("channel").toInt(&ok);
Chris@11:     if (ok) setChannel(channel);
Chris@11: 
Chris@11:     size_t windowSize = attributes.value("windowSize").toUInt(&ok);
Chris@11:     if (ok) setWindowSize(windowSize);
Chris@11: 
Chris@11:     WindowType windowType = (WindowType)
Chris@11: 	attributes.value("windowType").toInt(&ok);
Chris@11:     if (ok) setWindowType(windowType);
Chris@11: 
Chris@11:     size_t windowOverlap = attributes.value("windowOverlap").toUInt(&ok);
Chris@11:     if (ok) setWindowOverlap(windowOverlap);
Chris@11: 
Chris@11:     float gain = attributes.value("gain").toFloat(&ok);
Chris@11:     if (ok) setGain(gain);
Chris@11: 
Chris@11:     size_t maxFrequency = attributes.value("maxFrequency").toUInt(&ok);
Chris@11:     if (ok) setMaxFrequency(maxFrequency);
Chris@11: 
Chris@11:     ColourScale colourScale = (ColourScale)
Chris@11: 	attributes.value("colourScale").toInt(&ok);
Chris@11:     if (ok) setColourScale(colourScale);
Chris@11: 
Chris@11:     ColourScheme colourScheme = (ColourScheme)
Chris@11: 	attributes.value("colourScheme").toInt(&ok);
Chris@11:     if (ok) setColourScheme(colourScheme);
Chris@11: 
Chris@11:     FrequencyScale frequencyScale = (FrequencyScale)
Chris@11: 	attributes.value("frequencyScale").toInt(&ok);
Chris@11:     if (ok) setFrequencyScale(frequencyScale);
Chris@11: }
Chris@11:     
Chris@11: 
Chris@0: #ifdef INCLUDE_MOCFILES
Chris@0: #include "SpectrogramLayer.moc.cpp"
Chris@0: #endif
Chris@0: