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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
/*
Sonic Visualiser
An audio file viewer and annotation editor.
Centre for Digital Music, Queen Mary, University of London.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version. See the file
COPYING included with this distribution for more information.
*/
/*
This is a modified version of a source file from the
Rosegarden MIDI and audio sequencer and notation editor.
This file copyright 2000-2006 Chris Cannam.
*/
#ifndef _DSSIPLUGININSTANCE_H_
#define _DSSIPLUGININSTANCE_H_
#define DSSI_API_LEVEL 2
#include <vector>
#include <set>
#include <map>
#include <QString>
#include <QMutex>
#include "api/dssi.h"
#include "base/RingBuffer.h"
#include "base/Thread.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 getPluginIdentifier() const { return m_identifier; }
int getPosition() const { return m_position; }
virtual std::string getIdentifier() const;
virtual std::string getName() const;
virtual std::string getDescription() const;
virtual std::string getMaker() const;
virtual int getPluginVersion() const;
virtual std::string getCopyright() const;
virtual void run(const RealTime &, int count = 0);
virtual int getParameterCount() const;
virtual void setParameterValue(int parameter, float value);
virtual float getParameterValue(int parameter) const;
virtual float getParameterDefault(int parameter) const;
virtual int getParameterDisplayHint(int parameter) const;
virtual ParameterList getParameterDescriptors() const;
virtual float getParameter(std::string) const;
virtual void setParameter(std::string, float);
virtual std::string configure(std::string key, std::string value);
virtual void sendEvent(const RealTime &eventTime,
const void *event);
virtual void clearEvents();
virtual int getBufferSize() const { return m_blockSize; }
virtual int getAudioInputCount() const { return (int)m_audioPortsIn.size(); }
virtual int getAudioOutputCount() const { return m_idealChannelCount; }
virtual sample_t **getAudioInputBuffers() { return m_inputBuffers; }
virtual sample_t **getAudioOutputBuffers() { return m_outputBuffers; }
virtual int getControlOutputCount() const { return (int)m_controlPortsOut.size(); }
virtual float getControlOutputValue(int n) const;
virtual ProgramList getPrograms() const;
virtual std::string getCurrentProgram() const;
virtual std::string getProgram(int bank, int program) const;
virtual int getProgram(std::string name) const;
virtual void selectProgram(std::string program);
virtual bool isBypassed() const { return m_bypassed; }
virtual void setBypassed(bool bypassed) { m_bypassed = bypassed; }
virtual sv_frame_t getLatency();
virtual void silence();
virtual void discardEvents();
virtual void setIdealChannelCount(int channels); // may re-instantiate
virtual bool isInGroup() const { return m_grouped; }
virtual void detachFromGroup();
virtual std::string getType() const { return "DSSI Real-Time Plugin"; }
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,
sv_samplerate_t sampleRate,
int blockSize,
int idealChannelCount,
const DSSI_Descriptor* descriptor);
void init();
void instantiate(sv_samplerate_t sampleRate);
void cleanup();
void activate();
void deactivate();
void connectPorts();
bool handleController(snd_seq_event_t *ev);
void setPortValueFromController(int portNumber, int controlValue);
void selectProgramAux(std::string 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<int, LADSPA_Data*> > m_controlPortsIn;
std::vector<std::pair<int, 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;
std::string name;
};
mutable std::vector<ProgramDescriptor> m_cachedPrograms;
mutable bool m_programCacheValid;
RingBuffer<snd_seq_event_t> m_eventBuffer;
int m_blockSize;
sample_t **m_inputBuffers;
sample_t **m_outputBuffers;
bool m_ownBuffers;
int m_idealChannelCount;
int m_outputBufferCount;
sv_samplerate_t m_sampleRate;
float *m_latencyPort;
bool m_run;
bool m_bypassed;
std::string m_program;
bool m_grouped;
RealTime m_lastRunTime;
RealTime m_lastEventSendTime;
bool m_haveLastEventSendTime;
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 Thread
{
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_
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