Chris@43: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@43: 
Chris@43: /*
Chris@43:     Sonic Visualiser
Chris@43:     An audio file viewer and annotation editor.
Chris@43:     Centre for Digital Music, Queen Mary, University of London.
Chris@43:     This file copyright 2006 Chris Cannam.
Chris@43:     
Chris@43:     This program is free software; you can redistribute it and/or
Chris@43:     modify it under the terms of the GNU General Public License as
Chris@43:     published by the Free Software Foundation; either version 2 of the
Chris@43:     License, or (at your option) any later version.  See the file
Chris@43:     COPYING included with this distribution for more information.
Chris@43: */
Chris@43: 
Chris@43: #ifndef _AUDIO_GENERATOR_H_
Chris@43: #define _AUDIO_GENERATOR_H_
Chris@43: 
Chris@43: class Model;
Chris@43: class NoteModel;
matthiasm@281: class FlexiNoteModel;
Chris@43: class DenseTimeValueModel;
Chris@43: class SparseOneDimensionalModel;
Chris@108: class Playable;
Chris@307: class ClipMixer;
Chris@313: class ContinuousSynth;
Chris@43: 
Chris@43: #include <QObject>
Chris@43: #include <QMutex>
Chris@43: 
Chris@43: #include <set>
Chris@43: #include <map>
Chris@275: #include <vector>
Chris@43: 
Chris@43: class AudioGenerator : public QObject
Chris@43: {
Chris@43:     Q_OBJECT
Chris@43: 
Chris@43: public:
Chris@43:     AudioGenerator();
Chris@43:     virtual ~AudioGenerator();
Chris@43: 
Chris@43:     /**
Chris@43:      * Add a data model to be played from and initialise any necessary
Chris@43:      * audio generation code.  Returns true if the model will be
Chris@108:      * played.  The model will be added regardless of the return
Chris@108:      * value.
Chris@43:      */
Chris@43:     virtual bool addModel(Model *model);
Chris@43: 
Chris@43:     /**
Chris@43:      * Remove a model.
Chris@43:      */
Chris@43:     virtual void removeModel(Model *model);
Chris@43: 
Chris@43:     /**
Chris@43:      * Remove all models.
Chris@43:      */
Chris@43:     virtual void clearModels();
Chris@43: 
Chris@43:     /**
Chris@305:      * Reset playback, clearing buffers and the like.
Chris@43:      */
Chris@43:     virtual void reset();
Chris@43: 
Chris@43:     /**
Chris@43:      * Set the target channel count.  The buffer parameter to mixModel
Chris@43:      * must always point to at least this number of arrays.
Chris@43:      */
Chris@43:     virtual void setTargetChannelCount(size_t channelCount);
Chris@43: 
Chris@43:     /**
Chris@43:      * Return the internal processing block size.  The frameCount
Chris@43:      * argument to all mixModel calls must be a multiple of this
Chris@43:      * value.
Chris@43:      */
Chris@43:     virtual size_t getBlockSize() const;
Chris@43: 
Chris@43:     /**
Chris@43:      * Mix a single model into an output buffer.
Chris@43:      */
Chris@43:     virtual size_t mixModel(Model *model, size_t startFrame, size_t frameCount,
Chris@43: 			    float **buffer, size_t fadeIn = 0, size_t fadeOut = 0);
Chris@43: 
Chris@43:     /**
Chris@43:      * Specify that only the given set of models should be played.
Chris@43:      */
Chris@43:     virtual void setSoloModelSet(std::set<Model *>s);
Chris@43: 
Chris@43:     /**
Chris@43:      * Specify that all models should be played as normal (if not
Chris@43:      * muted).
Chris@43:      */
Chris@43:     virtual void clearSoloModelSet();
Chris@43: 
Chris@43: protected slots:
Chris@309:     void playClipIdChanged(const Playable *, QString);
Chris@43: 
Chris@43: protected:
Chris@305:     size_t m_sourceSampleRate;
Chris@305:     size_t m_targetChannelCount;
Chris@43: 
Chris@43:     bool m_soloing;
Chris@43:     std::set<Model *> m_soloModelSet;
Chris@43: 
Chris@43:     struct NoteOff {
Chris@43: 
Chris@308:         NoteOff(float _freq, size_t _frame) : frequency(_freq), frame(_frame) { }
Chris@275: 
Chris@308:         float frequency;
Chris@43: 	size_t frame;
Chris@43: 
Chris@43: 	struct Comparator {
Chris@43: 	    bool operator()(const NoteOff &n1, const NoteOff &n2) const {
Chris@43: 		return n1.frame < n2.frame;
Chris@43: 	    }
Chris@43: 	};
Chris@43:     };
Chris@43: 
Chris@307: 
Chris@307:     typedef std::map<const Model *, ClipMixer *> ClipMixerMap;
Chris@43: 
Chris@178:     typedef std::multiset<NoteOff, NoteOff::Comparator> NoteOffSet;
Chris@43:     typedef std::map<const Model *, NoteOffSet> NoteOffMap;
Chris@43: 
Chris@313:     typedef std::map<const Model *, ContinuousSynth *> ContinuousSynthMap;
Chris@313: 
Chris@43:     QMutex m_mutex;
Chris@313: 
Chris@307:     ClipMixerMap m_clipMixerMap;
Chris@43:     NoteOffMap m_noteOffs;
Chris@43:     static QString m_sampleDir;
Chris@43: 
Chris@313:     ContinuousSynthMap m_continuousSynthMap;
Chris@313: 
Chris@313:     bool usesClipMixer(const Model *);
Chris@313:     bool usesContinuousSynth(const Model *);
Chris@313: 
Chris@307:     ClipMixer *makeClipMixerFor(const Model *model);
Chris@313:     ContinuousSynth *makeSynthFor(const Model *model);
Chris@307: 
Chris@108:     static void initialiseSampleDir();
Chris@43: 
Chris@43:     virtual size_t mixDenseTimeValueModel
Chris@43:     (DenseTimeValueModel *model, size_t startFrame, size_t frameCount,
Chris@43:      float **buffer, float gain, float pan, size_t fadeIn, size_t fadeOut);
Chris@43: 
Chris@313:     virtual size_t mixClipModel
Chris@275:     (Model *model, size_t startFrame, size_t frameCount,
Chris@313:      float **buffer, float gain, float pan);
Chris@313: 
Chris@313:     virtual size_t mixContinuousSynthModel
Chris@313:     (Model *model, size_t startFrame, size_t frameCount,
Chris@313:      float **buffer, float gain, float pan);
Chris@275:     
Chris@305:     static const size_t m_processingBlockSize;
Chris@43: };
Chris@43: 
Chris@43: #endif
Chris@43: