Chris@133: 
Chris@133: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@133: 
Chris@133: /*
Chris@133:     Sonic Visualiser
Chris@133:     An audio file viewer and annotation editor.
Chris@133:     Centre for Digital Music, Queen Mary, University of London.
Chris@133:     This file copyright 2006 Chris Cannam.
Chris@133:     
Chris@133:     This program is free software; you can redistribute it and/or
Chris@133:     modify it under the terms of the GNU General Public License as
Chris@133:     published by the Free Software Foundation; either version 2 of the
Chris@133:     License, or (at your option) any later version.  See the file
Chris@133:     COPYING included with this distribution for more information.
Chris@133: */
Chris@133: 
Chris@133: #ifndef _SPECTRUM_LAYER_H_
Chris@133: #define _SPECTRUM_LAYER_H_
Chris@133: 
Chris@133: #include "Layer.h"
Chris@133: 
Chris@153: #include "base/Window.h"
Chris@153: 
Chris@133: #include "data/model/DenseTimeValueModel.h"
Chris@133: 
Chris@133: #include <QColor>
Chris@133: 
Chris@133: class FFTModel;
Chris@133: 
Chris@133: class SpectrumLayer : public Layer
Chris@133: {
Chris@133:     Q_OBJECT
Chris@133: 
Chris@133: public:
Chris@133:     SpectrumLayer();
Chris@133:     ~SpectrumLayer();
Chris@133:     
Chris@133:     void setModel(DenseTimeValueModel *model);
Chris@133:     virtual const Model *getModel() const { return m_model; }
Chris@133:     virtual void paint(View *v, QPainter &paint, QRect rect) const;
Chris@133: 
Chris@153:     virtual PropertyList getProperties() const;
Chris@153:     virtual QString getPropertyLabel(const PropertyName &) const;
Chris@153:     virtual PropertyType getPropertyType(const PropertyName &) const;
Chris@153:     virtual QString getPropertyGroupName(const PropertyName &) const;
Chris@153:     virtual int getPropertyRangeAndValue(const PropertyName &,
Chris@153: 					   int *min, int *max) const;
Chris@153:     virtual QString getPropertyValueLabel(const PropertyName &,
Chris@153: 					  int value) const;
Chris@153:     virtual void setProperty(const PropertyName &, int value);
Chris@133:     virtual void setProperties(const QXmlAttributes &);
Chris@133: 
Chris@133:     virtual bool getValueExtents(float &min, float &max,
Chris@133:                                  bool &logarithmic, QString &unit) const;
Chris@133: 
Chris@133:     virtual bool isLayerScrollable(const View *v) const { return false; }
Chris@133: 
Chris@153:     enum ChannelMode { SeparateChannels, MixChannels, OverlayChannels };
Chris@153: 
Chris@153:     void setChannelMode(ChannelMode);
Chris@153:     ChannelMode getChannelCount() const { return m_channelMode; }
Chris@153: 
Chris@153:     void setChannel(int);
Chris@153:     int getChannel() const { return m_channel; }
Chris@153: 
Chris@153:     enum EnergyScale { LinearScale, MeterScale, dBScale };
Chris@153: 
Chris@153:     void setBaseColour(QColor);
Chris@153:     QColor getBaseColour() const { return m_colour; }
Chris@153: 
Chris@153:     void setEnergyScale(EnergyScale);
Chris@153:     EnergyScale getEnergyScale() const { return m_energyScale; }
Chris@153: 
Chris@153:     void setWindowSize(size_t);
Chris@153:     size_t getWindowSize() const { return m_windowSize; }
Chris@153:     
Chris@153:     void setWindowHopLevel(size_t level);
Chris@153:     size_t getWindowHopLevel() const { return m_windowHopLevel; }
Chris@153: 
Chris@153:     void setWindowType(WindowType type);
Chris@153:     WindowType getWindowType() const { return m_windowType; }
Chris@153: 
Chris@153:     void setGain(float gain);
Chris@153:     float getGain() const;
Chris@153: 
Chris@153:     void setNormalize(bool n);
Chris@153:     bool getNormalize() const;
Chris@153: 
Chris@153:     virtual QString toXmlString(QString indent = "",
Chris@153: 				QString extraAttributes = "") const;
Chris@153: 
Chris@153: protected slots:
Chris@153:     void preferenceChanged(PropertyContainer::PropertyName name);
Chris@133: 
Chris@133: protected:
Chris@153:     DenseTimeValueModel    *m_model;
Chris@153:     std::vector<FFTModel *> m_fft;
Chris@153:     ChannelMode             m_channelMode;
Chris@153:     int                     m_channel;
Chris@153:     bool                    m_channelSet;
Chris@153:     QColor                  m_colour;
Chris@153:     EnergyScale             m_energyScale;
Chris@153:     bool                    m_normalize;
Chris@153:     float                   m_gain;
Chris@153:     size_t                  m_windowSize;
Chris@153:     WindowType              m_windowType;
Chris@153:     size_t                  m_windowHopLevel;
Chris@153: 
Chris@153:     void setupFFTs();
Chris@153: 
Chris@153:     size_t getWindowIncrement() const {
Chris@153:         if (m_windowHopLevel == 0) return m_windowSize;
Chris@153:         else if (m_windowHopLevel == 1) return (m_windowSize * 3) / 4;
Chris@153:         else return m_windowSize / (1 << (m_windowHopLevel - 1));
Chris@153:     }
Chris@133: };
Chris@133: 
Chris@133: #endif