annotate plugin/RealTimePluginFactory.h @ 1520:954d0cf29ca7 import-audio-data

Switch the normalisation option in WritableWaveFileModel from normalising on read to normalising on write, so that the saved file is already normalised and therefore can be read again without having to remember to normalise it

/* -*- 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 file copyright 2006 Chris Cannam.
    
    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 _REALTIME_PLUGIN_FACTORY_H_
#define _REALTIME_PLUGIN_FACTORY_H_

#include <QString>
#include <vector>

#include "base/Debug.h"
#include "base/BaseTypes.h"

class RealTimePluginInstance;

class RealTimePluginDescriptor
{
public:
    std::string name;
    std::string label;
    std::string maker;
    std::string copyright;
    std::string category;
    bool isSynth;
    unsigned int parameterCount;
    unsigned int audioInputPortCount;
    unsigned int audioOutputPortCount;
    unsigned int controlOutputPortCount;
    std::vector<std::string> controlOutputPortNames;
};

class RealTimePluginFactory
{
public:
    virtual ~RealTimePluginFactory();

    static RealTimePluginFactory *instance(QString pluginType);
    static RealTimePluginFactory *instanceFor(QString identifier);
    static std::vector<QString> getAllPluginIdentifiers();
    static void enumerateAllPlugins(std::vector<QString> &);

    static void setSampleRate(sv_samplerate_t sampleRate) { m_sampleRate = sampleRate; }

    /**
     * Look up the plugin path and find the plugins in it.  Called 
     * automatically after construction of a factory.
     */
    virtual void discoverPlugins() = 0;

    /**
     * Return a reference to a list of all plugin identifiers that can
     * be created by this factory.
     */
    virtual const std::vector<QString> &getPluginIdentifiers() const = 0;

    /**
     * Append to the given list descriptions of all the available
     * plugins and their ports.  This is in a standard format, see
     * the LADSPA implementation for details.
     */
    virtual void enumeratePlugins(std::vector<QString> &list) = 0;

    /**
     * Get some basic information about a plugin (rapidly).
     */
    virtual const RealTimePluginDescriptor *getPluginDescriptor(QString identifier) const = 0;

    /**
     * Instantiate a plugin.
     */
    virtual RealTimePluginInstance *instantiatePlugin(QString identifier,
                                                      int clientId,
                                                      int position,
                                                      sv_samplerate_t sampleRate,
                                                      int blockSize,
                                                      int channels) = 0;

    /**
     * Get category metadata about a plugin (without instantiating it).
     */
    virtual QString getPluginCategory(QString identifier) = 0;

    /**
     * Get the full file path (including both directory and filename)
     * of the library file that provides a given plugin
     * identifier. Note getPluginIdentifiers() must have been called
     * before this has access to the necessary information.
     */
    virtual QString getPluginLibraryPath(QString identifier) = 0;
    
protected:
    RealTimePluginFactory() { }

    // for call by RealTimePluginInstance dtor
    virtual void releasePlugin(RealTimePluginInstance *, QString identifier) = 0;
    friend class RealTimePluginInstance;

    static sv_samplerate_t m_sampleRate;
};

#endif