Chris@49: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@52:     Sonic Visualiser
Chris@52:     An audio file viewer and annotation editor.
Chris@52:     Centre for Digital Music, Queen Mary, University of London.
Chris@0:     
Chris@52:     This program is free software; you can redistribute it and/or
Chris@52:     modify it under the terms of the GNU General Public License as
Chris@52:     published by the Free Software Foundation; either version 2 of the
Chris@52:     License, or (at your option) any later version.  See the file
Chris@52:     COPYING included with this distribution for more information.
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.
Chris@0: */
Chris@0: 
Chris@1581: #ifndef SV_REALTIME_PLUGIN_INSTANCE_H
Chris@1581: #define SV_REALTIME_PLUGIN_INSTANCE_H
Chris@0: 
Chris@475: #include <vamp-hostsdk/PluginBase.h>
Chris@1040: 
Chris@1040: #include "base/RealTime.h"
Chris@1040: #include "base/AudioPlaySource.h"
Chris@51: 
Chris@0: #include <QString>
Chris@0: #include <QStringList>
Chris@0: #include <vector>
Chris@51: #include <string>
Chris@75: #include <map>
Chris@0: 
Chris@0: class RealTimePluginFactory;
Chris@1429:         
Chris@0: /**
Chris@60:  * RealTimePluginInstance is an interface that an audio process can
Chris@60:  * use to refer to an instance of a plugin without needing to know
Chris@60:  * what type of plugin it is.
Chris@0:  *
Chris@0:  * The audio code calls run() on an instance that has been passed to
Chris@0:  * it, and assumes that the passing code has already initialised the
Chris@0:  * plugin, connected its inputs and outputs and so on, and that there
Chris@0:  * is an understanding in place about the sizes of the buffers in use
Chris@0:  * by the plugin.  All of this depends on the subclass implementation.
Chris@51:  *
Chris@51:  * The PluginInstance base class includes additional abstract methods
Chris@51:  * which the subclass of RealTimePluginInstance must implement.
Chris@0:  */
Chris@0: 
Chris@60: /*
Chris@60:  * N.B. RealTimePluginInstance, RealTimePluginFactory and their
Chris@60:  * subclasses are terrible code.  They've been reused, cut and pasted
Chris@60:  * and mangled too many times to fit too many different uses, and
Chris@60:  * could do with a good tidy.
Chris@60:  */
Chris@60: 
Chris@0: // These names are taken from LADSPA, but the values are not
Chris@0: // guaranteed to match
Chris@0: 
Chris@0: namespace PortType { // ORable
Chris@0:     static const int Input   = 1;
Chris@0:     static const int Output  = 2;
Chris@0:     static const int Control = 4;
Chris@0:     static const int Audio   = 8;
Chris@0: }
Chris@0: 
Chris@0: namespace PortHint { // ORable
Chris@0:     static const int NoHint  = 0;
Chris@0:     static const int Toggled = 1;
Chris@0:     static const int Integer = 2;
Chris@0:     static const int Logarithmic = 4;
Chris@0:     static const int SampleRate = 8;
Chris@0: }
Chris@0: 
Chris@389: class RealTimePluginInstance : public Vamp::PluginBase, public Auditionable
Chris@0: {
Chris@0: public:
Chris@0:     typedef float sample_t;
Chris@0: 
Chris@0:     virtual ~RealTimePluginInstance();
Chris@0: 
Chris@0:     virtual bool isOK() const = 0;
Chris@0: 
Chris@237:     virtual QString getPluginIdentifier() const = 0;
Chris@0: 
Chris@0:     /**
Chris@0:      * Run for one block, starting at the given time.  The start time
Chris@0:      * may be of interest to synths etc that may have queued events
Chris@385:      * waiting.  Other plugins can ignore it.  The count, if zero,
Chris@385:      * defaults to our fixed buffer size.
Chris@0:      */
Chris@1040:     virtual void run(const RealTime &blockStartTime,
Chris@1040:                      int count = 0) = 0;
Chris@0:     
Chris@1040:     virtual int getBufferSize() const = 0;
Chris@0: 
Chris@1040:     virtual int getAudioInputCount() const = 0;
Chris@1040:     virtual int getAudioOutputCount() const = 0;
Chris@0: 
Chris@0:     virtual sample_t **getAudioInputBuffers() = 0;
Chris@0:     virtual sample_t **getAudioOutputBuffers() = 0;
Chris@0: 
Chris@60:     // Control inputs are known as parameters here
Chris@1040:     virtual int getControlOutputCount() const = 0;
Chris@1040:     virtual float getControlOutputValue(int n) const = 0;
Chris@60: 
Chris@51: //     virtual QStringList getPrograms() const { return QStringList(); }
Chris@51: //     virtual QString getCurrentProgram() const { return QString(); }
Chris@51:     virtual std::string getProgram(int /* bank */, int /* program */) const { return std::string(); }
Chris@1038: //     virtual int getProgram(QString /* name */) const { return 0; } // bank << 16 + program
Chris@51: //     virtual void selectProgram(QString) { }
Chris@0: 
Chris@1038:     virtual int getParameterCount() const = 0;
Chris@1038:     virtual void setParameterValue(int parameter, float value) = 0;
Chris@1038:     virtual float getParameterValue(int parameter) const = 0;
Chris@1038:     virtual float getParameterDefault(int parameter) const = 0;
Chris@1038:     virtual int getParameterDisplayHint(int parameter) const = 0;
Chris@0: 
Chris@51:     virtual std::string configure(std::string /* key */, std::string /* value */) { return std::string(); }
Chris@0: 
Chris@1040:     virtual void sendEvent(const RealTime & /* eventTime */,
Chris@1429:                            const void * /* event */) { }
Chris@10:     virtual void clearEvents() { }
Chris@0: 
Chris@0:     virtual bool isBypassed() const = 0;
Chris@0:     virtual void setBypassed(bool value) = 0;
Chris@0: 
Chris@0:     // This should be called after setup, but while not actually playing.
Chris@1040:     virtual sv_frame_t getLatency() = 0;
Chris@0: 
Chris@0:     virtual void silence() = 0;
Chris@0:     virtual void discardEvents() { }
Chris@1040:     virtual void setIdealChannelCount(int channels) = 0; // must also silence(); may also re-instantiate
Chris@0: 
Chris@1580:     std::string getType() const override { return "Real-Time Plugin"; }
Chris@57: 
Chris@332:     typedef std::map<std::string, std::string> ConfigurationPairMap;
Chris@332:     virtual ConfigurationPairMap getConfigurePairs() {
Chris@75:         return m_configurationData;
Chris@75:     }
Chris@75: 
Chris@0: protected:
Chris@0:     RealTimePluginInstance(RealTimePluginFactory *factory, QString identifier) :
Chris@1429:         m_factory(factory), m_identifier(identifier) { }
Chris@0: 
Chris@0:     RealTimePluginFactory *m_factory;
Chris@0:     QString m_identifier;
Chris@0: 
Chris@332:     ConfigurationPairMap m_configurationData;
Chris@0: };
Chris@0: 
Chris@0: 
Chris@0: #endif