X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2FgdcmRLEFramesInfo.cxx;h=189596db1740804240f9f442c0305f4640a07416;hb=56ad78cdf3b5de32f0a94a38cd32ddc9f403ffc3;hp=2c184116f5f6909ef38d62de1afd6008cc3ba207;hpb=b7e5f2772866e8cca5941e2daf611cc96a0e2d11;p=gdcm.git

diff --git a/src/gdcmRLEFramesInfo.cxx b/src/gdcmRLEFramesInfo.cxx
index 2c184116..189596db 100644
--- a/src/gdcmRLEFramesInfo.cxx
+++ b/src/gdcmRLEFramesInfo.cxx
@@ -3,8 +3,8 @@
   Program:   gdcm
   Module:    $RCSfile: gdcmRLEFramesInfo.cxx,v $
   Language:  C++
-  Date:      $Date: 2005/02/11 17:01:46 $
-  Version:   $Revision: 1.15 $
+  Date:      $Date: 2007/05/23 14:18:11 $
+  Version:   $Revision: 1.22 $
                                                                                 
   Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
   l'Image). All rights reserved. See Doc/License.txt or
@@ -18,8 +18,13 @@
 
 #include "gdcmRLEFramesInfo.h"
 #include "gdcmDebug.h"
+#include "gdcmUtil.h"
 
-namespace gdcm 
+#if defined(__BORLANDC__)
+   #include <mem.h> // for memset
+#endif 
+
+namespace GDCM_NAME_SPACE 
 {
 //-------------------------------------------------------------------------
 // Constructor / Destructor
@@ -61,20 +66,21 @@ RLEFrame *RLEFramesInfo::GetNextFrame()
  * \brief     Reads from disk the Pixel Data of 'Run Length Encoded'
  *            Dicom encapsulated file and decompress it.
  * @param     fp already open File Pointer
- *            at which the pixel data should be copied
+ *            from which the pixel data should be read
  * @param raw raw
  * @param xSize x Size
  * @param ySize y Size
  * @param zSize z Size
+ * @param tSize t Size 
  * @param bitsAllocated Bits allocated
  * @return    Boolean
  */
 bool RLEFramesInfo::DecompressRLEFile( std::ifstream *fp , uint8_t *raw, 
                                        int xSize, int ySize, int zSize, 
-                                       int bitsAllocated )
+                                       int tSize, int bitsAllocated )
 {
    uint8_t *subRaw = raw;
-   long rawSegmentSize = xSize * ySize;
+   long rawSegmentSize = xSize * ySize * tSize;
 
    // Loop on the frame[s]
    for(RLEFrameList::iterator it = Frames.begin(); it != Frames.end(); ++it)
@@ -85,7 +91,7 @@ bool RLEFramesInfo::DecompressRLEFile( std::ifstream *fp , uint8_t *raw,
    if ( bitsAllocated == 16 )
    {
       // Try to deal with RLE 16 Bits
-      ConvertRLE16BitsFromRLE8Bits( raw, xSize, ySize, zSize );
+      ConvertRLE16BitsFromRLE8Bits( raw, xSize, ySize, zSize, tSize );
    }
 
    return true;
@@ -98,27 +104,43 @@ bool RLEFramesInfo::DecompressRLEFile( std::ifstream *fp , uint8_t *raw,
  * @param raw raw 
  * @param xSize x Size
  * @param ySize y Size
+ * @param tSize t Size 
  * @param numberOfFrames number of frames 
  * @return    Boolean always true
  */
 bool RLEFramesInfo::ConvertRLE16BitsFromRLE8Bits(uint8_t *raw, int xSize, 
-                                                 int ySize, int numberOfFrames)
+                                                 int ySize, int tSize,
+                                                 int numberOfFrames)
 {
-   size_t pixelNumber = xSize * ySize;
-   size_t rawSize = xSize * ySize * numberOfFrames;
+   size_t pixelNumber = xSize * ySize * tSize;
+   size_t rawSize     = pixelNumber * numberOfFrames * 2;
 
    // We assumed Raw contains the decoded RLE pixels but as
    // 8 bits per pixel. In order to convert those pixels to 16 bits
    // per pixel we cannot work in place within Raw and hence
    // we copy it in a safe place, say copyRaw.
 
-   uint8_t *copyRaw = new uint8_t[rawSize * 2];
-   memmove( copyRaw, raw, rawSize * 2 );
+   uint8_t *copyRaw = new uint8_t[rawSize];
+   memmove( copyRaw, raw, rawSize );
 
    uint8_t *x = raw;
-   uint8_t *a = copyRaw;
-   uint8_t *b = a + pixelNumber;
+   uint8_t *a;
+   uint8_t *b;
+
+   // Warning : unckecked patch to see the behaviour on Big Endian Processors
+
+   if ( !Util::IsCurrentProcessorBigEndian() )
+   { 
+      a = copyRaw;         // beginning of 'low bytes'
+      b = a + pixelNumber; // beginning of 'hight bytes'
+   }
+   else
+   {
+      b = copyRaw;         // beginning of 'low bytes'
+      a = b + pixelNumber; // beginning of 'hight bytes'
+   } 
 
+   // Re order bytes
    for ( int i = 0; i < numberOfFrames; i++ )
    {
       for ( unsigned int j = 0; j < pixelNumber; j++ )
@@ -127,6 +149,7 @@ bool RLEFramesInfo::ConvertRLE16BitsFromRLE8Bits(uint8_t *raw, int xSize,
          *(x++) = *(a++);
       }
    }
+
    delete[] copyRaw;
 
    return true;
@@ -155,6 +178,8 @@ void RLEFramesInfo::Print( std::ostream &os, std::string indent )
       << "Total number of Frames : " << Frames.size()
       << std::endl;
    int frameNumber = 0;
+   /// \todo : find an example, to know haow 3rd and 4th dimension
+   ///         works together
    for(RLEFrameList::iterator it = Frames.begin(); it != Frames.end(); ++it)
    {
       os << indent