PluginAdapter.h

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00001 /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
00002 
00003 /*
00004     Vamp
00005 
00006     An API for audio analysis and feature extraction plugins.
00007 
00008     Centre for Digital Music, Queen Mary, University of London.
00009     Copyright 2006 Chris Cannam.
00010   
00011     Permission is hereby granted, free of charge, to any person
00012     obtaining a copy of this software and associated documentation
00013     files (the "Software"), to deal in the Software without
00014     restriction, including without limitation the rights to use, copy,
00015     modify, merge, publish, distribute, sublicense, and/or sell copies
00016     of the Software, and to permit persons to whom the Software is
00017     furnished to do so, subject to the following conditions:
00018 
00019     The above copyright notice and this permission notice shall be
00020     included in all copies or substantial portions of the Software.
00021 
00022     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00023     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00024     MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00025     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
00026     ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
00027     CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00028     WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00029 
00030     Except as contained in this notice, the names of the Centre for
00031     Digital Music; Queen Mary, University of London; and Chris Cannam
00032     shall not be used in advertising or otherwise to promote the sale,
00033     use or other dealings in this Software without prior written
00034     authorization.
00035 */
00036 
00037 #ifndef _VAMP_PLUGIN_ADAPTER_H_
00038 #define _VAMP_PLUGIN_ADAPTER_H_
00039 
00040 #include <vamp/vamp.h>
00041 
00042 #include "Plugin.h"
00043 
00044 #include <map>
00045 
00046 namespace Vamp {
00047 
00063 class PluginAdapterBase
00064 {
00065 public:
00066     virtual ~PluginAdapterBase();
00067 
00072     const VampPluginDescriptor *getDescriptor();
00073 
00074 protected:
00075     PluginAdapterBase();
00076 
00077     virtual Plugin *createPlugin(float inputSampleRate) = 0;
00078 
00079     class Impl;
00080     Impl *m_impl;
00081 };
00082 
00092 template <typename P>
00093 class PluginAdapter : public PluginAdapterBase
00094 {
00095 public:
00096     PluginAdapter() : PluginAdapterBase() { }
00097     virtual ~PluginAdapter() { }
00098 
00099 protected:
00100     Plugin *createPlugin(float inputSampleRate) {
00101         P *p = new P(inputSampleRate);
00102         Plugin *plugin = dynamic_cast<Plugin *>(p);
00103         if (!plugin) {
00104             std::cerr << "ERROR: PluginAdapter::createPlugin: "
00105                       << "Template type is not a plugin!"
00106                       << std::endl;
00107             delete p;
00108             return 0;
00109         }
00110         return plugin;
00111     }
00112 };
00113     
00114 }
00115 
00116 #endif
00117 

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