00001 /*!@file Media/MgzJDecoder.H Low-level class to decode mgzj files */ 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: Randolph Voorhies <voories at usc dot edu> 00034 00035 #ifndef MEDIA_MGZJDECODER_H_DEFINED 00036 #define MEDIA_MGZJDECODER_H_DEFINED 00037 #include "Util/Types.H" // for byte 00038 #include "Raster/GenericFrame.H" 00039 #include "Media/MgzJEncoder.H" 00040 #include <zlib.h> 00041 #include <iostream> 00042 #include <fstream> 00043 00044 /// Low-level decoder for multi-frame "mgzJ" file format 00045 class MgzJDecoder 00046 { 00047 public: 00048 //! Constructor 00049 MgzJDecoder(const std::string& fname); 00050 00051 //! Defualt Constructor 00052 MgzJDecoder() {}; 00053 00054 //! Virtual destructor for safe inheritance 00055 virtual ~MgzJDecoder(); 00056 00057 //! Read an RGB image from the stream 00058 virtual GenericFrame readFrame(); 00059 00060 //! Open the filename and init the structure 00061 void init(); 00062 void shutdown(); 00063 void setFilename(const std::string& fname) { itsFileName = fname; } 00064 00065 //! Get the total number of frames in the journal 00066 int getNumFrames(); 00067 00068 //! Get the current frame num 00069 int getFrameNum() { return itsFrameNum; } 00070 00071 //! Set the current frame number 00072 bool setFrameNumber(unsigned int n); 00073 00074 private: 00075 std::string itsFileName; 00076 std::ifstream itsFile; 00077 std::vector<MgzJEncoder::journalEntry> itsJournal; 00078 int itsFrameNum; 00079 }; 00080 00081 #endif //MEDIA_MGZJDECODER_H_DEFINED
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