VideoFormatCoercion.H

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00001 /*!@file Video/VideoFormatCoercion.H */
00002 
00003 // //////////////////////////////////////////////////////////////////// //
00004 // The iLab Neuromorphic Vision C++ Toolkit - Copyright (C) 2000-2005   //
00005 // by the University of Southern California (USC) and the iLab at USC.  //
00006 // See http://iLab.usc.edu for information about this project.          //
00007 // //////////////////////////////////////////////////////////////////// //
00008 // Major portions of the iLab Neuromorphic Vision Toolkit are protected //
00009 // under the U.S. patent ``Computation of Intrinsic Perceptual Saliency //
00010 // in Visual Environments, and Applications'' by Christof Koch and      //
00011 // Laurent Itti, California Institute of Technology, 2001 (patent       //
00012 // pending; application number 09/912,225 filed July 23, 2001; see      //
00013 // http://pair.uspto.gov/cgi-bin/final/home.pl for current status).     //
00014 // //////////////////////////////////////////////////////////////////// //
00015 // This file is part of the iLab Neuromorphic Vision C++ Toolkit.       //
00016 //                                                                      //
00017 // The iLab Neuromorphic Vision C++ Toolkit is free software; you can   //
00018 // redistribute it and/or modify it under the terms of the GNU General  //
00019 // Public License as published by the Free Software Foundation; either  //
00020 // version 2 of the License, or (at your option) any later version.     //
00021 //                                                                      //
00022 // The iLab Neuromorphic Vision C++ Toolkit is distributed in the hope  //
00023 // that it will be useful, but WITHOUT ANY WARRANTY; without even the   //
00024 // implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      //
00025 // PURPOSE.  See the GNU General Public License for more details.       //
00026 //                                                                      //
00027 // You should have received a copy of the GNU General Public License    //
00028 // along with the iLab Neuromorphic Vision C++ Toolkit; if not, write   //
00029 // to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,   //
00030 // Boston, MA 02111-1307 USA.                                           //
00031 // //////////////////////////////////////////////////////////////////// //
00032 //
00033 // Primary maintainer for this file: Rob Peters <rjpeters at usc dot edu>
00034 // $HeadURL: svn://isvn.usc.edu/software/invt/trunk/saliency/src/Video/VideoFormatCoercion.H $
00035 // $Id: VideoFormatCoercion.H 9248 2008-02-09 00:29:28Z rjpeters $
00036 //
00037 
00038 #ifndef VIDEO_VIDEOFORMATCOERCION_H_DEFINED
00039 #define VIDEO_VIDEOFORMATCOERCION_H_DEFINED
00040 
00041 #include "Util/Types.H"
00042 #include "Video/VideoFormat.H"
00043 
00044 #include <deque>
00045 
00046 class Dims;
00047 class VideoFrame;
00048 
00049 struct VideoFormatConverter
00050 {
00051   typedef VideoFrame Func(const byte* data, const size_t length,
00052                           const Dims& dims, const bool byteswap);
00053 
00054   VideoFormatConverter(Func* f, unsigned int w,
00055                        VideoFormat s, VideoFormat d,
00056                        const char* fn);
00057 
00058   VideoFrame apply(const VideoFrame& in) const;
00059 
00060   Func* func;
00061   unsigned int weight;
00062   VideoFormat src;
00063   VideoFormat dst;
00064   std::string fname;
00065 };
00066 
00067 class VideoFormatCoercion
00068 {
00069 public:
00070   VideoFormatCoercion();
00071 
00072   VideoFormatCoercion(unsigned int w, VideoFormat s, VideoFormat d,
00073                       VideoFormatConverter::Func* f, const char* fname);
00074 
00075   std::string describe() const;
00076 
00077   VideoFrame apply(const VideoFrame& src) const;
00078 
00079   bool isDirect() const { return nodes.size() == 1; }
00080 
00081   std::deque<VideoFormatConverter> nodes;
00082 };
00083 
00084 /// Find a direct or indirect converter for a pair of VideoFormat values
00085 const VideoFormatCoercion& findConverter(const VideoFormat srcformat,
00086                                          const VideoFormat dstformat);
00087 
00088 /// Coerce a VideoFrame into a different VideoFormat
00089 VideoFrame coerceVideoFormat(const VideoFrame& src,
00090                              const VideoFormat dstformat);
00091 
00092 /// Print a quick summary table of available coercions and their path-lengths to stderr
00093 void printCoercionTable();
00094 
00095 // ######################################################################
00096 /* So things look consistent in everyone's emacs... */
00097 /* Local Variables: */
00098 /* mode: c++ */
00099 /* indent-tabs-mode: nil */
00100 /* End: */
00101 
00102 #endif // VIDEO_VIDEOFORMATCOERCION_H_DEFINED
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