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: /*
Chris@0:    This is a modified version of a source file from the 
Chris@0:    Rosegarden MIDI and audio sequencer and notation editor.
Chris@17:    This file copyright 2000-2006 Chris Cannam and Richard Bown.
Chris@0: */
Chris@0: 
Chris@0: #ifndef _LADSPAPLUGININSTANCE_H_
Chris@0: #define _LADSPAPLUGININSTANCE_H_
Chris@0: 
Chris@0: #include <vector>
Chris@0: #include <set>
Chris@0: #include <QString>
Chris@0: 
Chris@0: #include "api/ladspa.h"
Chris@0: #include "RealTimePluginInstance.h"
Chris@0: 
Chris@0: // LADSPA plugin instance.  LADSPA is a variable block size API, but
Chris@0: // for one reason and another it's more convenient to use a fixed
Chris@0: // block size in this wrapper.
Chris@0: //
Chris@0: class LADSPAPluginInstance : public RealTimePluginInstance
Chris@0: {
Chris@0: public:
Chris@0:     virtual ~LADSPAPluginInstance();
Chris@0: 
Chris@0:     virtual bool isOK() const { return m_instanceHandles.size() != 0; }
Chris@0: 
Chris@0:     int getClientId() const { return m_client; }
Chris@0:     virtual QString getIdentifier() const { return m_identifier; }
Chris@0:     int getPosition() const { return m_position; }
Chris@0: 
Chris@0:     virtual void run(const RealTime &rt);
Chris@0: 
Chris@0:     virtual unsigned int getParameterCount() const;
Chris@0:     virtual void setParameterValue(unsigned int parameter, float value);
Chris@0:     virtual float getParameterValue(unsigned int parameter) const;
Chris@0:     virtual float getParameterDefault(unsigned int parameter) const;
Chris@0: 
Chris@0:     virtual size_t getBufferSize() const { return m_blockSize; }
Chris@0:     virtual size_t getAudioInputCount() const { return m_instanceCount * m_audioPortsIn.size(); }
Chris@0:     virtual size_t getAudioOutputCount() const { return m_instanceCount * m_audioPortsOut.size(); }
Chris@0:     virtual sample_t **getAudioInputBuffers() { return m_inputBuffers; }
Chris@0:     virtual sample_t **getAudioOutputBuffers() { return m_outputBuffers; }
Chris@0: 
Chris@0:     virtual bool isBypassed() const { return m_bypassed; }
Chris@0:     virtual void setBypassed(bool bypassed) { m_bypassed = bypassed; }
Chris@0: 
Chris@0:     virtual size_t getLatency();
Chris@0: 
Chris@0:     virtual void silence();
Chris@0:     virtual void setIdealChannelCount(size_t channels); // may re-instantiate
Chris@0: 
Chris@0: protected:
Chris@0:     // To be constructed only by LADSPAPluginFactory
Chris@0:     friend class LADSPAPluginFactory;
Chris@0: 
Chris@0:     // Constructor that creates the buffers internally
Chris@0:     // 
Chris@0:     LADSPAPluginInstance(RealTimePluginFactory *factory,
Chris@0: 			 int client,
Chris@0: 			 QString identifier,
Chris@0:                          int position,
Chris@0: 			 unsigned long sampleRate,
Chris@0: 			 size_t blockSize,
Chris@0: 			 int idealChannelCount,
Chris@0:                          const LADSPA_Descriptor* descriptor);
Chris@0: 
Chris@0:     // Constructor that uses shared buffers
Chris@0:     // 
Chris@0:     LADSPAPluginInstance(RealTimePluginFactory *factory,
Chris@0: 			 int client,
Chris@0: 			 QString identifier,
Chris@0:                          int position,
Chris@0: 			 unsigned long sampleRate,
Chris@0: 			 size_t blockSize,
Chris@0: 			 sample_t **inputBuffers,
Chris@0: 			 sample_t **outputBuffers,
Chris@0:                          const LADSPA_Descriptor* descriptor);
Chris@0: 
Chris@0:     void init(int idealChannelCount = 0);
Chris@0:     void instantiate(unsigned long sampleRate);
Chris@0:     void cleanup();
Chris@0:     void activate();
Chris@0:     void deactivate();
Chris@0: 
Chris@0:     // Connection of data (and behind the scenes control) ports
Chris@0:     //
Chris@0:     void connectPorts();
Chris@0:     
Chris@0:     int                        m_client;
Chris@0:     int                        m_position;
Chris@0:     std::vector<LADSPA_Handle> m_instanceHandles;
Chris@0:     size_t                     m_instanceCount;
Chris@0:     const LADSPA_Descriptor   *m_descriptor;
Chris@0: 
Chris@0:     std::vector<std::pair<unsigned long, LADSPA_Data*> > m_controlPortsIn;
Chris@0:     std::vector<std::pair<unsigned long, LADSPA_Data*> > m_controlPortsOut;
Chris@0: 
Chris@0:     std::vector<int>          m_audioPortsIn;
Chris@0:     std::vector<int>          m_audioPortsOut;
Chris@0: 
Chris@0:     size_t                    m_blockSize;
Chris@0:     sample_t                **m_inputBuffers;
Chris@0:     sample_t                **m_outputBuffers;
Chris@0:     bool                      m_ownBuffers;
Chris@0:     size_t                    m_sampleRate;
Chris@0:     float                    *m_latencyPort;
Chris@0:     bool                      m_run;
Chris@0:     
Chris@0:     bool                      m_bypassed;
Chris@0: };
Chris@0: 
Chris@0: #endif // _LADSPAPLUGININSTANCE_H_
Chris@0: