lbajardsilogic@0: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
lbajardsilogic@0: 
lbajardsilogic@0: /*
lbajardsilogic@0:     Sonic Visualiser
lbajardsilogic@0:     An audio file viewer and annotation editor.
lbajardsilogic@0:     Centre for Digital Music, Queen Mary, University of London.
lbajardsilogic@0:     This file copyright 2006 Chris Cannam and QMUL.
lbajardsilogic@0:     
lbajardsilogic@0:     This program is free software; you can redistribute it and/or
lbajardsilogic@0:     modify it under the terms of the GNU General Public License as
lbajardsilogic@0:     published by the Free Software Foundation; either version 2 of the
lbajardsilogic@0:     License, or (at your option) any later version.  See the file
lbajardsilogic@0:     COPYING included with this distribution for more information.
lbajardsilogic@0: */
lbajardsilogic@0: 
lbajardsilogic@0: #ifndef _WAVE_FILE_MODEL_H_
lbajardsilogic@0: #define _WAVE_FILE_MODEL_H_
lbajardsilogic@0: 
lbajardsilogic@0: #include "base/Thread.h"
lbajardsilogic@0: #include <QMutex>
lbajardsilogic@0: #include <QTimer>
lbajardsilogic@0: 
lbajardsilogic@0: #include "RangeSummarisableTimeValueModel.h"
lbajardsilogic@0: #include "PowerOfSqrtTwoZoomConstraint.h"
lbajardsilogic@0: 
lbajardsilogic@0: #include <stdlib.h>
lbajardsilogic@0: 
lbajardsilogic@0: class AudioFileReader;
lbajardsilogic@0: 
lbajardsilogic@0: class WaveFileModel : public RangeSummarisableTimeValueModel
lbajardsilogic@0: {
lbajardsilogic@0:     Q_OBJECT
lbajardsilogic@0: 
lbajardsilogic@0: public:
lbajardsilogic@0:     WaveFileModel(QString path);
lbajardsilogic@0:     WaveFileModel(QString path, QString originalLocation);
lbajardsilogic@0:     WaveFileModel(QString originalLocation, AudioFileReader *reader);
lbajardsilogic@0:     ~WaveFileModel();
lbajardsilogic@0: 
lbajardsilogic@0:     bool isOK() const;
lbajardsilogic@0:     bool isReady(int *) const;
lbajardsilogic@0: 
lbajardsilogic@0:     const ZoomConstraint *getZoomConstraint() const { return &m_zoomConstraint; }
lbajardsilogic@0: 
lbajardsilogic@0:     size_t getFrameCount() const;
lbajardsilogic@0:     size_t getChannelCount() const;
lbajardsilogic@0:     size_t getSampleRate() const;
lbajardsilogic@0: 
lbajardsilogic@0:     virtual Model *clone() const;
lbajardsilogic@0: 
lbajardsilogic@0:     float getValueMinimum() const { return -1.0f; }
lbajardsilogic@0:     float getValueMaximum() const { return  1.0f; }
lbajardsilogic@0: 
lbajardsilogic@0:     virtual size_t getStartFrame() const { return 0; }
lbajardsilogic@0:     virtual size_t getEndFrame() const { return getFrameCount(); }
lbajardsilogic@0: 
lbajardsilogic@0:     virtual size_t getValues(int channel, size_t start, size_t end,
lbajardsilogic@0: 			     float *buffer) const;
lbajardsilogic@0: 
lbajardsilogic@0:     virtual size_t getValues(int channel, size_t start, size_t end,
lbajardsilogic@0: 			     double *buffer) const;
lbajardsilogic@0: 
lbajardsilogic@0:     virtual void getRanges(size_t channel, size_t start, size_t end,
lbajardsilogic@0:                            RangeBlock &ranges,
lbajardsilogic@0:                            size_t &blockSize) const;
lbajardsilogic@0: 
lbajardsilogic@0:     virtual Range getRange(size_t channel, size_t start, size_t end) const;
lbajardsilogic@0: 
lbajardsilogic@0:     virtual void toXml(QTextStream &out,
lbajardsilogic@0:                        QString indent = "",
lbajardsilogic@0:                        QString extraAttributes = "") const;
lbajardsilogic@0: 
lbajardsilogic@0:     virtual QString toXmlString(QString indent = "",
lbajardsilogic@0: 				QString extraAttributes = "") const;
lbajardsilogic@0: 
lbajardsilogic@0: signals:
lbajardsilogic@0:     void modelChanged();
lbajardsilogic@0:     void modelChanged(size_t, size_t);
lbajardsilogic@0:     void completionChanged();
lbajardsilogic@0: 
lbajardsilogic@0: protected slots:
lbajardsilogic@0:     void fillTimerTimedOut();
lbajardsilogic@0:     void cacheFilled();
lbajardsilogic@0:     
lbajardsilogic@0: protected:
lbajardsilogic@0:     void initialize();
lbajardsilogic@0: 
lbajardsilogic@0:     class RangeCacheFillThread : public Thread
lbajardsilogic@0:     {
lbajardsilogic@0:     public:
lbajardsilogic@0:         RangeCacheFillThread(WaveFileModel &model) :
lbajardsilogic@0: 	    m_model(model), m_fillExtent(0),
lbajardsilogic@0:             m_frameCount(model.getFrameCount()) { }
lbajardsilogic@0:     
lbajardsilogic@0: 	size_t getFillExtent() const { return m_fillExtent; }
lbajardsilogic@0:         virtual void run();
lbajardsilogic@0: 
lbajardsilogic@0:     protected:
lbajardsilogic@0:         WaveFileModel &m_model;
lbajardsilogic@0: 	size_t m_fillExtent;
lbajardsilogic@0:         size_t m_frameCount;
lbajardsilogic@0:     };
lbajardsilogic@0:          
lbajardsilogic@0:     void fillCache();
lbajardsilogic@0:     
lbajardsilogic@0:     QString m_path;
lbajardsilogic@0:     AudioFileReader *m_reader;
lbajardsilogic@0:     bool m_myReader;
lbajardsilogic@0: 
lbajardsilogic@0:     RangeBlock m_cache[2]; // interleaved at two base resolutions
lbajardsilogic@0:     mutable QMutex m_mutex;
lbajardsilogic@0:     RangeCacheFillThread *m_fillThread;
lbajardsilogic@0:     QTimer *m_updateTimer;
lbajardsilogic@0:     size_t m_lastFillExtent;
lbajardsilogic@0:     bool m_exiting;
lbajardsilogic@0:     static PowerOfSqrtTwoZoomConstraint m_zoomConstraint;
lbajardsilogic@0: };    
lbajardsilogic@0: 
lbajardsilogic@0: #endif