PluginLoader.h

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

/*
    Vamp

    An API for audio analysis and feature extraction plugins.

    Centre for Digital Music, Queen Mary, University of London.
    Copyright 2006-2009 Chris Cannam and QMUL.
  
    Permission is hereby granted, free of charge, to any person
    obtaining a copy of this software and associated documentation
    files (the "Software"), to deal in the Software without
    restriction, including without limitation the rights to use, copy,
    modify, merge, publish, distribute, sublicense, and/or sell copies
    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
    included in all copies or substantial portions of the Software.

    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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    Except as contained in this notice, the names of the Centre for
    Digital Music; Queen Mary, University of London; and Chris Cannam
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*/

#ifndef _VAMP_PLUGIN_LOADER_H_
#define _VAMP_PLUGIN_LOADER_H_

#include <vector>
#include <string>
#include <map>

#include "hostguard.h"
#include "PluginWrapper.h"

_VAMP_SDK_HOSTSPACE_BEGIN(PluginLoader.h)

namespace Vamp {

class Plugin;

namespace HostExt {

class PluginLoader
{
public:
    static PluginLoader *getInstance();

    typedef std::string PluginKey;

    typedef std::vector<PluginKey> PluginKeyList;

    typedef std::vector<std::string> PluginCategoryHierarchy;

    PluginKeyList listPlugins();

    PluginKeyList listPluginsIn(std::vector<std::string> libraryNames);

    PluginKeyList listPluginsNotIn(std::vector<std::string> libraryNames);

    enum AdapterFlags {

        ADAPT_INPUT_DOMAIN  = 0x01,
        ADAPT_CHANNEL_COUNT = 0x02,
        ADAPT_BUFFER_SIZE   = 0x04,

        ADAPT_ALL_SAFE      = 0x03,

        ADAPT_ALL           = 0xff
    };

    Plugin *loadPlugin(PluginKey key,
                       float inputSampleRate,
                       int adapterFlags = 0);
    
    PluginKey composePluginKey(std::string libraryName,
                               std::string identifier);

    PluginCategoryHierarchy getPluginCategory(PluginKey plugin);

    std::string getLibraryPathForPlugin(PluginKey plugin);

protected:
    PluginLoader();
    virtual ~PluginLoader();

    class Impl;
    Impl *m_impl;

    static PluginLoader *m_instance;
};

}

}

_VAMP_SDK_HOSTSPACE_END(PluginLoader.h)

#endif