c@49: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
c@49: 
c@49: /*
c@49:     Vampipe
c@49: 
c@49:     Centre for Digital Music, Queen Mary, University of London.
c@49:     Copyright 2006-2016 Chris Cannam and QMUL.
c@49:   
c@49:     Permission is hereby granted, free of charge, to any person
c@49:     obtaining a copy of this software and associated documentation
c@49:     files (the "Software"), to deal in the Software without
c@49:     restriction, including without limitation the rights to use, copy,
c@49:     modify, merge, publish, distribute, sublicense, and/or sell copies
c@49:     of the Software, and to permit persons to whom the Software is
c@49:     furnished to do so, subject to the following conditions:
c@49: 
c@49:     The above copyright notice and this permission notice shall be
c@49:     included in all copies or substantial portions of the Software.
c@49: 
c@49:     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
c@49:     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
c@49:     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
c@49:     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
c@49:     ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
c@49:     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
c@49:     WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
c@49: 
c@49:     Except as contained in this notice, the names of the Centre for
c@49:     Digital Music; Queen Mary, University of London; and Chris Cannam
c@49:     shall not be used in advertising or otherwise to promote the sale,
c@49:     use or other dealings in this Software without prior written
c@49:     authorization.
c@49: */
c@49: 
c@49: #ifndef VAMPIPE_PLUGIN_ID_MAPPER_H
c@49: #define VAMPIPE_PLUGIN_ID_MAPPER_H
c@49: 
c@49: #include <vamp-hostsdk/Plugin.h>
c@49: 
c@49: #include <map>
c@49: #include <string>
c@49: 
c@49: namespace vampipe {
c@49: 
c@49: class PluginOutputIdMapper
c@49: {
c@49: // NB not threadsafe. Does this matter?
c@49: 
c@49: //!!! simplify. A single vector is almost certainly faster.
c@49:     
c@49: public:
c@49:     PluginOutputIdMapper(Vamp::Plugin *p) : m_plugin(p) { }
c@49: 
c@49:     class NotFound : virtual public std::runtime_error {
c@49:     public:
c@49:         NotFound() : runtime_error("output id or index not found in mapper") { }
c@49:     };
c@49: 
c@49:     int idToIndex(std::string outputId) const {
c@49: 	if (m_idIndexMap.empty()) populate();
c@49: 	auto i = m_idIndexMap.find(outputId);
c@49: 	if (i == m_idIndexMap.end()) throw NotFound();
c@49: 	return i->second;
c@49:     }
c@49: 
c@49:     std::string indexToId(int index) const {
c@49: 	if (m_ids.empty()) populate();
c@49: 	if (index < 0 || size_t(index) >= m_ids.size()) throw NotFound();
c@49: 	return m_ids[index];
c@49:     }
c@49: 
c@49: private:
c@49:     Vamp::Plugin *m_plugin;
c@49:     mutable std::vector<std::string> m_ids;
c@49:     mutable std::map<std::string, int> m_idIndexMap;
c@49: 
c@49:     void populate() const {
c@49: 	Vamp::Plugin::OutputList outputs = m_plugin->getOutputDescriptors();
c@49: 	for (const auto &d: outputs) {
c@49: 	    m_idIndexMap[d.identifier] = m_ids.size();
c@49: 	    m_ids.push_back(d.identifier);
c@49: 	}
c@49:     }
c@49: };
c@49: 
c@49: }
c@49: 
c@49: #endif