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Context.h

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00001 /* ========================================================================
00002  * Copyright (c) 2006,
00003  * Institute for Computer Graphics and Vision
00004  * Graz University of Technology
00005  * All rights reserved.
00006  *
00007  * Redistribution and use in source and binary forms, with or without
00008  * modification, are permitted provided that the following conditions are
00009  * met:
00010  *
00011  * Redistributions of source code must retain the above copyright notice,
00012  * this list of conditions and the following disclaimer.
00013  *
00014  * Redistributions in binary form must reproduce the above copyright
00015  * notice, this list of conditions and the following disclaimer in the
00016  * documentation and/or other materials provided with the distribution.
00017  *
00018  * Neither the name of the Graz University of Technology nor the names of
00019  * its contributors may be used to endorse or promote products derived from
00020  * this software without specific prior written permission.
00021  *
00022  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
00023  * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
00024  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
00025  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
00026  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
00027  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
00028  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
00029  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
00030  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00031  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00032  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00033  * ========================================================================
00034  * PROJECT: OpenTracker
00035  * ======================================================================== */
00042 /* ======================================================================= */
00043 
00044 #ifndef _CONTEXT_H
00045 #define _CONTEXT_H
00046 
00047 #include "../dllinclude.h"
00048 
00049 #include "Node.h"
00050 #include "Module.h"
00051 #include "NodeFactoryContainer.h"
00052 #include "VideoUser.h"
00053 
00054 
00055 namespace ot {
00056 
00058     typedef std::map<std::string, Module *> ModuleMap;
00059 
00092     class OPENTRACKER_API Context
00093     {
00094 
00095     protected:
00097         ModuleMap modules;
00099         Node* rootNode;
00101         NodeFactoryContainer factory;
00103         bool cleanUp;
00105         std::string file;
00107         std::vector<std::string> directories;
00109         std::string rootNamespace;
00110 
00111     VideoUserVector videoUsers;
00112 
00113         // Methods
00114     public:
00115 
00120         Context( int init = 0 );
00123         virtual ~Context();
00124 
00127         void addFactory(NodeFactory& newfactory);
00130         void removeFactory(NodeFactory & factory);
00131 
00135         void addModule(const std::string & name, Module & module);
00136 
00140         Module * getModule(const std::string & name);
00141 
00144         void removeModule(Module & module);
00145 
00156         Node * createNode(const std::string & name, StringTable & attributes);
00157 
00162         Node * getRootNode();
00163 
00169         Node * findNode(const std::string & id);
00170 
00174         void parseConfiguration(const std::string& filename);
00175 
00177         void start();
00178 
00181         void pushEvents();
00182 
00184         void pullEvents();
00185 
00188         void run();
00189 
00190         void runAtRate(double rate);
00191 
00194         int stop();
00195 
00197         void close();
00198 
00202         void addDirectoryFirst( const std::string & dir );
00203 
00207         void addDirectoryLast( const std::string & dir );
00208 
00212         void removeDirectory( const std::string & dir );
00213 
00222         bool findFile( const std::string & filename, std::string & fullname );
00223 
00228         const std::string & getRootNamespace();
00229 
00230 
00232     void newVideoFrame(const unsigned char* image, int width, int height, PIXEL_FORMAT format);
00233 
00234 
00236     void registerVideoUser(VideoUser* videoUser);
00237 
00238 
00240     void unregisterVideoUser(VideoUser* videoUser);
00241 
00242 
00243         friend class ConfigurationParser;
00244     };
00245 
00246     // returns the namespace of the root node
00247     inline const std::string & Context::getRootNamespace()
00248     {
00249         return rootNamespace;
00250     }
00251 
00252 } // namespace ot
00253 
00254 #endif
00255 
00256 /*
00257  * ------------------------------------------------------------
00258  *   End of Context.cxx
00259  * ------------------------------------------------------------
00260  *   Automatic Emacs configuration follows.
00261  *   Local Variables:
00262  *   mode:c++
00263  *   c-basic-offset: 4
00264  *   eval: (c-set-offset 'substatement-open 0)
00265  *   eval: (c-set-offset 'case-label '+)
00266  *   eval: (c-set-offset 'statement 'c-lineup-runin-statements)
00267  *   eval: (setq indent-tabs-mode nil)
00268  *   End:
00269  * ------------------------------------------------------------
00270  */

copyright (c) 2006 Graz University of Technology