Mercurial > hg > svcore
view plugin/DSSIPluginInstance.h @ 0:da6937383da8
initial import
author | Chris Cannam |
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date | Tue, 10 Jan 2006 16:33:16 +0000 |
parents | |
children | d86891498eef |
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/* -*- c-basic-offset: 4 -*- vi:set ts=8 sts=4 sw=4: */ /* A waveform viewer and audio annotation editor. Chris Cannam, Queen Mary University of London, 2005 This is experimental software. Not for distribution. */ /* This is a modified version of a source file from the Rosegarden MIDI and audio sequencer and notation editor. This file copyright 2000-2005 Chris Cannam. */ #ifndef _DSSIPLUGININSTANCE_H_ #define _DSSIPLUGININSTANCE_H_ #define DSSI_API_LEVEL 2 #include <vector> #include <set> #include <map> #include <QString> #include <QMutex> #include <QThread> #include "api/dssi.h" #include "base/RingBuffer.h" #include "RealTimePluginInstance.h" #include "base/Scavenger.h" class DSSIPluginInstance : public RealTimePluginInstance { public: virtual ~DSSIPluginInstance(); virtual bool isOK() const { return m_instanceHandle != 0; } int getClientId() const { return m_client; } virtual QString getIdentifier() const { return m_identifier; } int getPosition() const { return m_position; } virtual void run(const RealTime &); virtual unsigned int getParameterCount() const; virtual void setParameterValue(unsigned int parameter, float value); virtual float getParameterValue(unsigned int parameter) const; virtual float getParameterDefault(unsigned int parameter) const; virtual QString configure(QString key, QString value); virtual void sendEvent(const RealTime &eventTime, const void *event); virtual size_t getBufferSize() const { return m_blockSize; } virtual size_t getAudioInputCount() const { return m_audioPortsIn.size(); } virtual size_t getAudioOutputCount() const { return m_idealChannelCount; } virtual sample_t **getAudioInputBuffers() { return m_inputBuffers; } virtual sample_t **getAudioOutputBuffers() { return m_outputBuffers; } virtual QStringList getPrograms() const; virtual QString getCurrentProgram() const; virtual QString getProgram(int bank, int program) const; virtual unsigned long getProgram(QString name) const; virtual void selectProgram(QString program); virtual bool isBypassed() const { return m_bypassed; } virtual void setBypassed(bool bypassed) { m_bypassed = bypassed; } virtual size_t getLatency(); virtual void silence(); virtual void discardEvents(); virtual void setIdealChannelCount(size_t channels); // may re-instantiate virtual bool isInGroup() const { return m_grouped; } virtual void detachFromGroup(); protected: // To be constructed only by DSSIPluginFactory friend class DSSIPluginFactory; // Constructor that creates the buffers internally // DSSIPluginInstance(RealTimePluginFactory *factory, int client, QString identifier, int position, unsigned long sampleRate, size_t blockSize, int idealChannelCount, const DSSI_Descriptor* descriptor); // Constructor that uses shared buffers // DSSIPluginInstance(RealTimePluginFactory *factory, int client, QString identifier, int position, unsigned long sampleRate, size_t blockSize, sample_t **inputBuffers, sample_t **outputBuffers, const DSSI_Descriptor* descriptor); void init(); void instantiate(unsigned long sampleRate); void cleanup(); void activate(); void deactivate(); void connectPorts(); bool handleController(snd_seq_event_t *ev); void setPortValueFromController(unsigned int portNumber, int controlValue); void selectProgramAux(QString program, bool backupPortValues); void checkProgramCache() const; void initialiseGroupMembership(); void runGrouped(const RealTime &); // For use in DSSIPluginFactory (set in the DSSI_Host_Descriptor): static int requestMidiSend(LADSPA_Handle instance, unsigned char ports, unsigned char channels); static void midiSend(LADSPA_Handle instance, snd_seq_event_t *events, unsigned long eventCount); static int requestNonRTThread(LADSPA_Handle instance, void (*runFunction)(LADSPA_Handle)); int m_client; int m_position; LADSPA_Handle m_instanceHandle; const DSSI_Descriptor *m_descriptor; std::vector<std::pair<unsigned long, LADSPA_Data*> > m_controlPortsIn; std::vector<std::pair<unsigned long, LADSPA_Data*> > m_controlPortsOut; std::vector<LADSPA_Data> m_backupControlPortsIn; std::map<int, int> m_controllerMap; std::vector<int> m_audioPortsIn; std::vector<int> m_audioPortsOut; struct ProgramControl { int msb; int lsb; int program; }; ProgramControl m_pending; struct ProgramDescriptor { int bank; int program; QString name; }; mutable std::vector<ProgramDescriptor> m_cachedPrograms; mutable bool m_programCacheValid; RingBuffer<snd_seq_event_t> m_eventBuffer; size_t m_blockSize; sample_t **m_inputBuffers; sample_t **m_outputBuffers; bool m_ownBuffers; size_t m_idealChannelCount; size_t m_outputBufferCount; size_t m_sampleRate; float *m_latencyPort; bool m_run; bool m_bypassed; QString m_program; bool m_grouped; RealTime m_lastRunTime; QMutex m_processLock; typedef std::set<DSSIPluginInstance *> PluginSet; typedef std::map<QString, PluginSet> GroupMap; static GroupMap m_groupMap; static snd_seq_event_t **m_groupLocalEventBuffers; static size_t m_groupLocalEventBufferCount; static Scavenger<ScavengerArrayWrapper<snd_seq_event_t *> > m_bufferScavenger; class NonRTPluginThread : public QThread { public: NonRTPluginThread(LADSPA_Handle handle, void (*runFunction)(LADSPA_Handle)) : m_handle(handle), m_runFunction(runFunction), m_exiting(false) { } virtual void run(); void setExiting() { m_exiting = true; } protected: LADSPA_Handle m_handle; void (*m_runFunction)(LADSPA_Handle); bool m_exiting; }; static std::map<LADSPA_Handle, std::set<NonRTPluginThread *> > m_threads; }; #endif // _DSSIPLUGININSTANCE_H_