X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2FgdcmPixelReadConvert.cxx;h=66d41820237be7a95129a27023d397562e14ffb4;hb=f2892379e89dd5236abb60ea3c84c3fe9d5ef45f;hp=66bcbfdeaad67b93616528281824a9b9730fbe7a;hpb=9b08ef2e93023e33dad3326a0c7d6b5db7b72cd4;p=gdcm.git

diff --git a/src/gdcmPixelReadConvert.cxx b/src/gdcmPixelReadConvert.cxx
index 66bcbfde..66d41820 100644
--- a/src/gdcmPixelReadConvert.cxx
+++ b/src/gdcmPixelReadConvert.cxx
@@ -3,8 +3,8 @@
   Program:   gdcm
   Module:    $RCSfile: gdcmPixelReadConvert.cxx,v $
   Language:  C++
-  Date:      $Date: 2005/05/21 18:43:53 $
-  Version:   $Revision: 1.56 $
+  Date:      $Date: 2005/05/30 00:24:10 $
+  Version:   $Revision: 1.62 $
                                                                                 
   Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
   l'Image). All rights reserved. See Doc/License.txt or
@@ -31,7 +31,8 @@
 namespace gdcm
 {
 
-extern bool ReadMPEGFile (std::ifstream *fp, void *image_buffer);
+//bool ReadMPEGFile (std::ifstream *fp, void *image_buffer, size_t lenght);
+bool gdcm_read_JPEG2000_file (std::ifstream* fp, void* raw, size_t inputlength);
 //-----------------------------------------------------------------------------
 #define str2num(str, typeNum) *((typeNum *)(str))
 
@@ -257,7 +258,7 @@ bool PixelReadConvert::ReadAndDecompressPixelData( std::ifstream *fp )
    {
       //gdcmWarningMacro( "Sorry, MPEG not yet taken into account" );
       //return false;
-      ReadMPEGFile(fp, Raw); // fp has already been seek to start of mpeg
+//      ReadMPEGFile(fp, Raw, PixelDataLength); // fp has already been seek to start of mpeg
       return true;
    }
    else
@@ -396,27 +397,41 @@ bool PixelReadConvert::ReadAndDecompressJPEGFile( std::ifstream *fp )
 {
    if ( IsJPEG2000 )
    {
-      gdcmWarningMacro( "Sorry, JPEG2000 not yet taken into account" );
+      // I don't think we'll ever be able to deal with multiple fragments
+      assert( JPEGInfo->GetFragmentCount() == 1 );
       fp->seekg( JPEGInfo->GetFirstFragment()->GetOffset(), std::ios::beg);
-//    if ( ! gdcm_read_JPEG2000_file( fp,Raw ) )
-          return false;
+      if ( ! gdcm_read_JPEG2000_file( fp,Raw, 
+          JPEGInfo->GetFirstFragment()->GetLength() ) )
+      {
+         return true;
+      }
    }
 
    if ( IsJPEGLS )
    {
+   // WARNING : JPEG-LS is NOT the 'classical' Jpeg Lossless : 
+   // [JPEG-LS is the basis for new lossless/near-lossless compression
+   // standard for continuous-tone images intended for JPEG2000. The standard
+   // is based on the LOCO-I algorithm (LOw COmplexity LOssless COmpression
+   // for Images) developed at Hewlett-Packard Laboratories]
+   //
+   // see http://datacompression.info/JPEGLS.shtml
+   //
+
       gdcmWarningMacro( "Sorry, JPEG-LS not yet taken into account" );
       fp->seekg( JPEGInfo->GetFirstFragment()->GetOffset(), std::ios::beg);
 //    if ( ! gdcm_read_JPEGLS_file( fp,Raw ) )
          return false;
    }
-
-   // else ??
-   // Precompute the offset localRaw will be shifted with
-   int length = XSize * YSize * SamplesPerPixel;
-   int numberBytes = BitsAllocated / 8;
-
-   JPEGInfo->DecompressFromFile(fp, Raw, BitsStored, numberBytes, length );
-   return true;
+   else
+     {
+     // Precompute the offset localRaw will be shifted with
+     int length = XSize * YSize * SamplesPerPixel;
+     int numberBytes = BitsAllocated / 8;
+
+     JPEGInfo->DecompressFromFile(fp, Raw, BitsStored, numberBytes, length );
+     return true;
+     }
 }
 
 /**