gdcmJPEGFragmentsInfo.cxx

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00001 /*=========================================================================
00002                                                                                 
00003   Program:   gdcm
00004   Module:    $RCSfile: gdcmJPEGFragmentsInfo.cxx,v $
00005   Language:  C++
00006   Date:      $Date: 2007/05/23 14:18:10 $
00007   Version:   $Revision: 1.21 $
00008                                                                                 
00009   Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
00010   l'Image). All rights reserved. See Doc/License.txt or
00011   http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
00012                                                                                 
00013      This software is distributed WITHOUT ANY WARRANTY; without even
00014      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00015      PURPOSE.  See the above copyright notices for more information.
00016                                                                                 
00017 =========================================================================*/
00018 
00019 #include "gdcmJPEGFragmentsInfo.h"
00020 #include "gdcmDebug.h"
00021 
00022 #include <fstream>
00023 
00024 namespace GDCM_NAME_SPACE 
00025 {
00026 //-------------------------------------------------------------------------
00027 // Constructor / Destructor
00028 JPEGFragmentsInfo::JPEGFragmentsInfo()
00029 {
00030    StateSuspension = 0;
00031 }
00032 
00036 JPEGFragmentsInfo::~JPEGFragmentsInfo()
00037 {
00038    for(JPEGFragmentsList::iterator it  = Fragments.begin();
00039                                    it != Fragments.end();
00040                                  ++it )
00041    {
00042       delete *it;
00043    }
00044    Fragments.clear();
00045 }
00046 
00047 //-----------------------------------------------------------------------------
00048 // Public
00049 void JPEGFragmentsInfo::DecompressFromFile(std::ifstream *fp, uint8_t *buffer, int nBits, int , int )
00050 {
00051    // Pointer to the Raw image
00052    uint8_t *localRaw = buffer;
00053 
00054   // Loop on the fragment[s]
00055    JPEGFragmentsList::const_iterator it;
00056    for( it  = Fragments.begin();
00057         it != Fragments.end();
00058         ++it )
00059    {
00060      (*it)->DecompressJPEGFramesFromFile(fp, localRaw, nBits, StateSuspension);
00061      // update pointer to image after some scanlines read:
00062      localRaw = (*it)->GetImage();
00063    }
00064 }
00065 
00066 void JPEGFragmentsInfo::AddFragment(JPEGFragment *fragment)
00067 {
00068    Fragments.push_back(fragment);
00069 }
00070 
00071 JPEGFragment *JPEGFragmentsInfo::GetFirstFragment()
00072 {
00073    ItFragments = Fragments.begin();
00074    if (ItFragments != Fragments.end())
00075       return  *ItFragments;
00076    return NULL;
00077 }
00078 
00079 JPEGFragment *JPEGFragmentsInfo::GetNextFragment()
00080 {
00081    gdcmAssertMacro (ItFragments != Fragments.end());
00082 
00083    ++ItFragments;
00084    if (ItFragments != Fragments.end())
00085       return  *ItFragments;
00086    return NULL;
00087 }
00088 
00089 unsigned int JPEGFragmentsInfo::GetFragmentCount()
00090 {
00091    return Fragments.size();
00092 }
00093 
00094 //-----------------------------------------------------------------------------
00095 // Protected
00096 
00097 //-----------------------------------------------------------------------------
00098 // Private
00099 
00100 //-----------------------------------------------------------------------------
00101 // Print
00107 void JPEGFragmentsInfo::Print( std::ostream &os, std::string const &indent )
00108 {
00109    os << std::endl;
00110    os << indent
00111       << "----------------- JPEG fragments --------------------------------"
00112       << std::endl << std::endl;
00113    os << indent
00114       << "Total number of fragments : " << Fragments.size()
00115       << std::endl;
00116    int fragmentNumber = 0;
00117    for(JPEGFragmentsList::iterator it  = Fragments.begin();
00118                                    it != Fragments.end();
00119                                  ++it)
00120    {
00121       os << indent
00122          << "   fragment number :" << fragmentNumber++;
00123       (*it)->Print( os, indent + "   ");
00124    }
00125    os << std::endl;
00126 }
00127 
00128 //-----------------------------------------------------------------------------
00129 } // end namespace gdcm

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