annotate bits/PluginHandleMapper.h @ 40:55d69b26d4db

Pull out CountingPluginHandleMapper; consts

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Vampipe

    Centre for Digital Music, Queen Mary, University of London.
    Copyright 2006-2016 Chris Cannam and QMUL.
  
    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation
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    restriction, including without limitation the rights to use, copy,
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    of the Software, and to permit persons to whom the Software is
    furnished to do so, subject to the following conditions:

    The above copyright notice and this permission notice shall be
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    Except as contained in this notice, the names of the Centre for
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*/

#ifndef VAMPIPE_PLUGIN_HANDLE_MAPPER_H
#define VAMPIPE_PLUGIN_HANDLE_MAPPER_H

#include <vamp-hostsdk/Plugin.h>

namespace vampipe {

class PluginHandleMapper
{
    // NB the handle type must fit in a JSON number
    
public:
    class NotFound : virtual public std::runtime_error {
    public:
        NotFound() : runtime_error("plugin or handle not found in mapper") { }
    };
    
    virtual int32_t pluginToHandle(Vamp::Plugin *) const = 0; // may throw NotFound
    virtual Vamp::Plugin *handleToPlugin(int32_t)  const = 0; // may throw NotFound
};

}

#endif