c@19: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
c@19: 
c@19: /*
c@19:     Vampipe
c@19: 
c@19:     Centre for Digital Music, Queen Mary, University of London.
c@19:     Copyright 2006-2016 Chris Cannam and QMUL.
c@19:   
c@19:     Permission is hereby granted, free of charge, to any person
c@19:     obtaining a copy of this software and associated documentation
c@19:     files (the "Software"), to deal in the Software without
c@19:     restriction, including without limitation the rights to use, copy,
c@19:     modify, merge, publish, distribute, sublicense, and/or sell copies
c@19:     of the Software, and to permit persons to whom the Software is
c@19:     furnished to do so, subject to the following conditions:
c@19: 
c@19:     The above copyright notice and this permission notice shall be
c@19:     included in all copies or substantial portions of the Software.
c@19: 
c@19:     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
c@19:     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
c@19:     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
c@19:     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
c@19:     ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
c@19:     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
c@19:     WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
c@19: 
c@19:     Except as contained in this notice, the names of the Centre for
c@19:     Digital Music; Queen Mary, University of London; and Chris Cannam
c@19:     shall not be used in advertising or otherwise to promote the sale,
c@19:     use or other dealings in this Software without prior written
c@19:     authorization.
c@19: */
c@19: 
c@19: #ifndef VAMPIPE_CONSTANT_PLUGIN_HANDLE_MAPPER_H
c@19: #define VAMPIPE_CONSTANT_PLUGIN_HANDLE_MAPPER_H
c@19: 
c@19: #include "PluginHandleMapper.h"
c@19: 
c@19: namespace vampipe {
c@19: 
c@19: /**
c@19:  * A trivial PluginHandleMapper, to be used for tests and for
c@19:  * translating between protocols that contain handles without actually
c@19:  * loading any plugins.
c@19:  *
c@19:  * This mapper only knows about one handle, and if it is asked for
c@19:  * that one, it returns a fixed plugin pointer (which might never be
c@19:  * dereferenced, depending on the context in which this class is
c@19:  * used). The idea would be to create one of these on the fly each
c@19:  * time a new handle needs to be translated.
c@19:  */
c@19: class ConstantPluginHandleMapper : public PluginHandleMapper
c@19: {
c@19: public:
c@19:     ConstantPluginHandleMapper(Vamp::Plugin *plugin, int32_t handle) :
c@19: 	m_plugin(plugin), m_handle(handle) { }
c@19:     
c@19:     virtual int32_t pluginToHandle(Vamp::Plugin *p) {
c@19: 	if (p == m_plugin) return m_handle;
c@19: 	else throw NotFound();
c@19:     }
c@19: 	
c@19:     virtual Vamp::Plugin *handleToPlugin(int32_t h) {
c@19: 	if (h == m_handle) return m_plugin;
c@19: 	else throw NotFound();
c@19:     }
c@19: 
c@19: private:
c@19:     Vamp::Plugin *m_plugin;
c@19:     int32_t m_handle;
c@19: };
c@19: 
c@19: }
c@19: 
c@19: #endif