X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2FgdcmJPEGFragment.cxx;h=9b5733b5fc65b3b3f0affddaf5ea3459fe67c205;hb=8a69df0f4018beae8c78a35bef30590e318128e5;hp=03cc0bc03f5e7979f62d50a60b90196d3fa5f203;hpb=d5e16925a7d3c8dbd0e71b1989629ca0f619b119;p=gdcm.git

diff --git a/src/gdcmJPEGFragment.cxx b/src/gdcmJPEGFragment.cxx
index 03cc0bc0..9b5733b5 100644
--- a/src/gdcmJPEGFragment.cxx
+++ b/src/gdcmJPEGFragment.cxx
@@ -3,8 +3,8 @@
   Program:   gdcm
   Module:    $RCSfile: gdcmJPEGFragment.cxx,v $
   Language:  C++
-  Date:      $Date: 2005/01/17 01:14:32 $
-  Version:   $Revision: 1.3 $
+  Date:      $Date: 2005/01/18 14:28:32 $
+  Version:   $Revision: 1.5 $
                                                                                 
   Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
   l'Image). All rights reserved. See Doc/License.txt or
@@ -69,42 +69,46 @@ void JPEGFragment::Print( std::ostream &os, std::string indent )
 
 /**
  * \brief Decompress 8bits JPEG Fragment
+ * @param fp ifstream to write to
  * @param buffer     output (data decompress)
  * @param nBits      8/12 or 16 bits jpeg
  */
 void JPEGFragment::DecompressJPEGFramesFromFile(std::ifstream *fp, uint8_t *buffer, int nBits)
 {
-      if ( nBits == 8)
-      {
-         // JPEG Lossy : call to IJG 6b
-         if ( ! gdcm_read_JPEG_file8( fp, buffer) )
-         {
-            //return false;
-         }
-      }
-      else if ( nBits <= 12)
+   // First thing need to reset file to proper position:
+   fp->seekg( Offset, std::ios::beg);
+
+   if ( nBits == 8 )
+   {
+      // JPEG Lossy : call to IJG 6b
+      if ( ! gdcm_read_JPEG_file8( fp, buffer) )
       {
-         // Reading Fragment pixels
-         if ( ! gdcm_read_JPEG_file12 ( fp, buffer) )
-         {
-            //return false;
-         }
+         //return false;
       }
-      else if ( nBits <= 16)
+   }
+   else if ( nBits <= 12 )
+   {
+      // Reading Fragment pixels
+      if ( ! gdcm_read_JPEG_file12 ( fp, buffer) )
       {
-         // Reading Fragment pixels
-         if ( ! gdcm_read_JPEG_file16 ( fp, buffer) )
-         {
-            //return false;
-         }
-         //gdcmAssertMacro( IsJPEGLossless );
+         //return false;
       }
-      else
+   }
+   else if ( nBits <= 16 )
+   {
+      // Reading Fragment pixels
+      if ( ! gdcm_read_JPEG_file16 ( fp, buffer) )
       {
-         // other JPEG lossy not supported
-         gdcmErrorMacro( "Unknown jpeg lossy compression ");
          //return false;
       }
+      //gdcmAssertMacro( IsJPEGLossless );
+   }
+   else
+   {
+      // other JPEG lossy not supported
+      gdcmErrorMacro( "Unknown jpeg lossy compression ");
+      //return false;
+   }
 
 }
 
@@ -156,49 +160,48 @@ void JPEGFragment::DecompressJPEGSingleFrameFragmentsFromFile(JOCTET *buffer, si
 
 void JPEGFragment::DecompressJPEGFragmentedFramesFromFile(JOCTET *buffer, uint8_t* raw, int nBits, size_t &howManyRead, size_t &howManyWritten, size_t totalLength)
 {
-     if ( nBits == 8)
-      {
-        if ( ! gdcm_read_JPEG_memory8( buffer+howManyRead, totalLength-howManyRead,
-                                     raw+howManyWritten,
-                                     &howManyRead, &howManyWritten ) ) 
-          {
-            gdcmErrorMacro( "Failed to read jpeg8");
-            //delete [] buffer;
-            //return false;
-          }
-      }
-      else if ( nBits <= 12)
-      {
-      
-        if ( ! gdcm_read_JPEG_memory12( buffer+howManyRead, totalLength-howManyRead,
-                                      raw+howManyWritten,
-                                      &howManyRead, &howManyWritten ) ) 
-          {
-            gdcmErrorMacro( "Failed to read jpeg12");
-            //delete [] buffer;
-            //return false;
-         }
-      }
-      else if ( nBits <= 16)
-      {
-      
-        if ( ! gdcm_read_JPEG_memory16( buffer+howManyRead, totalLength-howManyRead,
-                                      raw+howManyWritten,
-                                      &howManyRead, &howManyWritten ) ) 
-          {
-            gdcmErrorMacro( "Failed to read jpeg16 ");
-            //delete [] buffer;
-            //return false;
-          }
-      }
-      else
-      {
-         // other JPEG lossy not supported
-         gdcmErrorMacro( "Unsupported jpeg lossy compression ");
+   if ( nBits == 8 )
+   {
+     if ( ! gdcm_read_JPEG_memory8( buffer+howManyRead, totalLength-howManyRead,
+                                  raw+howManyWritten,
+                                  &howManyRead, &howManyWritten ) ) 
+       {
+         gdcmErrorMacro( "Failed to read jpeg8");
+         //delete [] buffer;
+         //return false;
+       }
+   }
+   else if ( nBits <= 12 )
+   {
+   
+     if ( ! gdcm_read_JPEG_memory12( buffer+howManyRead, totalLength-howManyRead,
+                                   raw+howManyWritten,
+                                   &howManyRead, &howManyWritten ) ) 
+       {
+         gdcmErrorMacro( "Failed to read jpeg12");
          //delete [] buffer;
          //return false;
       }
-
+   }
+   else if ( nBits <= 16 )
+   {
+   
+     if ( ! gdcm_read_JPEG_memory16( buffer+howManyRead, totalLength-howManyRead,
+                                   raw+howManyWritten,
+                                   &howManyRead, &howManyWritten ) ) 
+       {
+         gdcmErrorMacro( "Failed to read jpeg16 ");
+         //delete [] buffer;
+         //return false;
+       }
+   }
+   else
+   {
+      // other JPEG lossy not supported
+      gdcmErrorMacro( "Unsupported jpeg lossy compression ");
+      //delete [] buffer;
+      //return false;
+   }
 }
 
 } // end namespace gdcm