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@2:     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: #ifndef _AUDIO_GENERATOR_H_
Chris@0: #define _AUDIO_GENERATOR_H_
Chris@0: 
Chris@0: class Model;
Chris@0: class ViewManager;
Chris@0: class DenseTimeValueModel;
Chris@0: class SparseOneDimensionalModel;
Chris@0: class RealTimePluginInstance;
Chris@0: 
Chris@0: #include <set>
Chris@0: #include <map>
Chris@0: 
Chris@0: class AudioGenerator
Chris@0: {
Chris@0: public:
Chris@0:     AudioGenerator(ViewManager *);
Chris@0:     virtual ~AudioGenerator();
Chris@0: 
Chris@0:     /**
Chris@0:      * Add a data model to be played from and initialise any
Chris@0:      * necessary audio generation code.
Chris@0:      */
Chris@0:     virtual void addModel(Model *model);
Chris@0: 
Chris@0:     /**
Chris@0:      * Remove a model.
Chris@0:      */
Chris@0:     virtual void removeModel(Model *model);
Chris@0: 
Chris@0:     /**
Chris@0:      * Remove all models.
Chris@0:      */
Chris@0:     virtual void clearModels();
Chris@0: 
Chris@0:     /**
Chris@0:      * Reset playback, clearing plugins and the like.
Chris@0:      */
Chris@0:     virtual void reset();
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the target channel count.  The buffer parameter to mixModel
Chris@0:      * must always point to at least this number of arrays.
Chris@0:      */
Chris@0:     virtual void setTargetChannelCount(size_t channelCount);
Chris@0: 
Chris@0:     /**
Chris@0:      * Return the internal processing block size.  The frameCount
Chris@0:      * argument to all mixModel calls must be a multiple of this
Chris@0:      * value.
Chris@0:      */
Chris@0:     virtual size_t getBlockSize() const;
Chris@0: 
Chris@0:     /**
Chris@0:      * Mix a single model into an output buffer.
Chris@0:      */
Chris@0:     virtual size_t mixModel(Model *model, size_t startFrame, size_t frameCount,
Chris@0: 			    float **buffer);
Chris@0: 
Chris@0: protected:
Chris@0:     ViewManager *m_viewManager;
Chris@0:     size_t       m_sourceSampleRate;
Chris@0:     size_t       m_targetChannelCount;
Chris@0: 
Chris@0:     struct NoteOff {
Chris@0: 
Chris@0: 	int pitch;
Chris@0: 	size_t frame;
Chris@0: 
Chris@0: 	struct Comparator {
Chris@0: 	    bool operator()(const NoteOff &n1, const NoteOff &n2) const {
Chris@0: 		return n1.frame < n2.frame;
Chris@0: 	    }
Chris@0: 	};
Chris@0:     };
Chris@0: 
Chris@0:     typedef std::map<SparseOneDimensionalModel *,
Chris@0: 		     RealTimePluginInstance *> PluginMap;
Chris@0: 
Chris@0:     typedef std::set<NoteOff, NoteOff::Comparator> NoteOffSet;
Chris@0:     typedef std::map<SparseOneDimensionalModel *, NoteOffSet> NoteOffMap;
Chris@0: 
Chris@0:     PluginMap m_synthMap;
Chris@0:     NoteOffMap m_noteOffs;
Chris@0: 
Chris@0:     virtual size_t mixDenseTimeValueModel
Chris@0:     (DenseTimeValueModel *model, size_t startFrame, size_t frameCount,
Chris@0:      float **buffer, float gain, float pan);
Chris@0: 
Chris@0:     virtual size_t mixSparseOneDimensionalModel
Chris@0:     (SparseOneDimensionalModel *model, size_t startFrame, size_t frameCount,
Chris@0:      float **buffer, float gain, float pan);
Chris@0: 
Chris@0:     static const size_t m_pluginBlockSize;
Chris@0: };
Chris@0: 
Chris@0: #endif
Chris@0: