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96 lines
2.9 KiB
96 lines
2.9 KiB
/*
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Rosegarden
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A sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <bownie@bownie.com>
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The moral right of the authors to claim authorship of this work
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has been asserted.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#ifndef _PLUGIN_FACTORY_H_
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#define _PLUGIN_FACTORY_H_
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#include <tqstring.h>
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#include <vector>
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#include "MappedCommon.h"
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namespace Rosegarden
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{
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class RunnablePluginInstance;
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class MappedPluginSlot;
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class PluginFactory
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{
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public:
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static PluginFactory *instance(TQString pluginType);
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static PluginFactory *instanceFor(TQString identifier);
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static void enumerateAllPlugins(MappedObjectPropertyList &);
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static void setSampleRate(int sampleRate) { m_sampleRate = sampleRate; }
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/**
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* Look up the plugin path and find the plugins in it. Called
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* automatically after construction of a factory.
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*/
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virtual void discoverPlugins() = 0;
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/**
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* Return a reference to a list of all plugin identifiers that can
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* be created by this factory.
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*/
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virtual const std::vector<TQString> &getPluginIdentifiers() const = 0;
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/**
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* Append to the given list descriptions of all the available
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* plugins and their ports. This is in a standard format, see
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* the LADSPA implementation for details.
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*/
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virtual void enumeratePlugins(MappedObjectPropertyList &list) = 0;
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/**
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* Populate the given plugin slot with information about its
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* plugin. This is called from the plugin slot's set method
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* when it's been asked to set its plugin identifier. This
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* method should also destroy and recreate the plugin slot's
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* port child objects.
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*/
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virtual void populatePluginSlot(TQString identifier,
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MappedPluginSlot &slot) = 0;
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/**
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* Instantiate a plugin.
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*/
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virtual RunnablePluginInstance *instantiatePlugin(TQString identifier,
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int instrumentId,
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int position,
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unsigned int sampleRate,
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unsigned int blockSize,
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unsigned int channels) = 0;
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protected:
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PluginFactory() { }
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// for call by RunnablePluginInstance dtor
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virtual void releasePlugin(RunnablePluginInstance *, TQString identifier) = 0;
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friend class RunnablePluginInstance;
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static int m_sampleRate;
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};
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}
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#endif
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