comparison plugin/RealTimePluginFactory.h @ 0:da6937383da8

initial import

+/* -*- 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 _REALTIME_PLUGIN_FACTORY_H_
+#define _REALTIME_PLUGIN_FACTORY_H_
+
+#include <QString>
+#include <vector>
+
+class RealTimePluginInstance;
+
+class RealTimePluginFactory
+{
+public:
+    static RealTimePluginFactory *instance(QString pluginType);
+    static RealTimePluginFactory *instanceFor(QString identifier);
+    static std::vector<QString> getAllPluginIdentifiers();
+    static void enumerateAllPlugins(std::vector<QString> &);
+
+    static void setSampleRate(int 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;
+
+    /**
+     * Instantiate a plugin.
+     */
+    virtual RealTimePluginInstance *instantiatePlugin(QString identifier,
+						      int clientId,
+						      int position,
+						      unsigned int sampleRate,
+						      unsigned int blockSize,
+						      unsigned int channels) = 0;
+
+protected:
+    RealTimePluginFactory() { }
+
+    // for call by RealTimePluginInstance dtor
+    virtual void releasePlugin(RealTimePluginInstance *, QString identifier) = 0;
+    friend class RealTimePluginInstance;
+
+    static int m_sampleRate;
+};
+
+#endif