X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2FgdcmRLE.cxx;h=72cf33403d244acd98670b8c02ad26fb964c259b;hb=d71e2e62b38383d9b960760f6d81c4d545d59fba;hp=ae9149c3a5ca643c186ab09fdfe2b71cdca04e12;hpb=29bdd1e88a28b6267618f633f304e1154537ce7b;p=gdcm.git diff --git a/src/gdcmRLE.cxx b/src/gdcmRLE.cxx index ae9149c3..72cf3340 100644 --- a/src/gdcmRLE.cxx +++ b/src/gdcmRLE.cxx @@ -1,131 +1,113 @@ +/*========================================================================= + + Program: gdcm + Module: $RCSfile: gdcmRLE.cxx,v $ + Language: C++ + Date: $Date: 2004/06/23 03:36:24 $ + Version: $Revision: 1.19 $ + + Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de + l'Image). All rights reserved. See Doc/License.txt or + http://www.creatis.insa-lyon.fr/Public/Gdcm/License.htm for details. + + This software is distributed WITHOUT ANY WARRANTY; without even + the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + PURPOSE. See the above copyright notices for more information. + +=========================================================================*/ #include #include "gdcmFile.h" -#include /* to declare isprint() */ +#include // For isprint() #define str2num(str, typeNum) *((typeNum *)(str)) -static int _gdcm_read_RLE_fragment (char ** image_buffer, - long lengthToDecode, - long uncompressedSegmentSize, - FILE* fp); -// static because nothing but gdcm_read_RLE_file may call it - -#define DEBUG 0 -// Will be removed - -// ---------------------------------------------------------------------------- +//----------------------------------------------------------------------------- /** * \ingroup gdcmFile * \brief Reads a 'Run Length Encoded' Dicom encapsulated file + * @param fp already open File Pointer * @param image_buffer destination Address (in caller's memory space) - * at which the - * pixel data should be copied - * @return int acts as a Boolean + * at which the pixel data should be copied + * @return Boolean */ - -// This is a debug version. -// Forget the printf as they will be removed -// as soon as the last Heuristics are checked - -int -gdcmFile::gdcm_read_RLE_file (void * image_buffer) { +bool gdcmFile::gdcm_read_RLE_file (FILE *fp,void * image_buffer) { long fragmentBegining; // for ftell, fseek char * im = (char *)image_buffer; - if (DEBUG)std::cout << "RLE image" << std::endl; long RleSegmentLength[15],fragmentLength,uncompressedSegmentSize;; long ftellRes, ln; guint32 nbRleSegments; guint32 RleSegmentOffsetTable[15]; guint16 ItemTagGr,ItemTagEl; - uncompressedSegmentSize=GetXSize()*GetYSize(); - if (DEBUG)printf("uncompressedSegmentSize %d\n",uncompressedSegmentSize); + uncompressedSegmentSize=Header->GetXSize()*Header->GetYSize(); ftellRes=ftell(fp); // Basic Offset Table with Item Value // Item Tag fread(&ItemTagGr,2,1,fp); // Reading (fffe):Basic Offset Table Item Tag Gr fread(&ItemTagEl,2,1,fp); // Reading (e000):Basic Offset Table Item Tag El - if(GetSwapCode()) { - ItemTagGr=SwapShort(ItemTagGr); - ItemTagEl=SwapShort(ItemTagEl); + if(Header->GetSwapCode()) { + ItemTagGr=Header->SwapShort(ItemTagGr); + ItemTagEl=Header->SwapShort(ItemTagEl); } - if (DEBUG)printf ("at %x : ItemTag (should be fffe,e000): %04x,%04x\n", - ftellRes,ItemTagGr,ItemTagEl ); // Item Length ftellRes=ftell(fp); fread(&ln,4,1,fp); - if(GetSwapCode()) - ln=SwapLong(ln); // Basic Offset Table Item Lentgh - if (DEBUG)printf("at %x : Basic Offset Table Item Lentgh (??) %d x(%08x)\n", - ftellRes,ln,ln); + if(Header->GetSwapCode()) + ln=Header->SwapLong(ln); // Basic Offset Table Item Lentgh if (ln != 0) { // What is it used for ?? - char * BasicOffsetTableItemValue= (char *)malloc(ln+1); + char * BasicOffsetTableItemValue= new char[ln+1]; fread(BasicOffsetTableItemValue,ln,1,fp); guint32 a; for (int i=0;iGetSwapCode()) { + ItemTagGr=Header->SwapShort(ItemTagGr); + ItemTagEl=Header->SwapShort(ItemTagEl); } - if (DEBUG)printf ("at %x : ItemTag (should be fffe,e000 or e0dd): %04x,%04x\n", - ftellRes,ItemTagGr,ItemTagEl ); // while 'Sequence Delimiter Item' (fffe,e0dd) not found while ( ( ItemTagGr == 0xfffe) && (ItemTagEl != 0xe0dd) ) { // Parse fragments of the current Fragment (Frame) ftellRes=ftell(fp); fread(&fragmentLength,4,1,fp); - if(GetSwapCode()) - fragmentLength=SwapLong(fragmentLength); // length - if (DEBUG)printf(" at %x : fragment length %d x(%08x)\n", - ftellRes, fragmentLength,fragmentLength); + if(Header->GetSwapCode()) + fragmentLength=Header->SwapLong(fragmentLength); // length //------------------ scanning (not reading) fragment pixels fread(&nbRleSegments,4,1,fp); // Reading : Number of RLE Segments - if(GetSwapCode()) - nbRleSegments=SwapLong(nbRleSegments); - if (DEBUG)printf(" Nb of RLE Segments : %d\n",nbRleSegments); + if(Header->GetSwapCode()) + nbRleSegments=Header->SwapLong(nbRleSegments); for(int k=1; k<=15; k++) { // Reading RLE Segments Offset Table ftellRes=ftell(fp); fread(&RleSegmentOffsetTable[k],4,1,fp); - if(GetSwapCode()) - RleSegmentOffsetTable[k]=SwapLong(RleSegmentOffsetTable[k]); - if (DEBUG)printf(" at : %x Offset Segment %d : %d (%x)\n", - ftellRes,k,RleSegmentOffsetTable[k],RleSegmentOffsetTable[k]); + if(Header->GetSwapCode()) + RleSegmentOffsetTable[k]=Header->SwapLong(RleSegmentOffsetTable[k]); } if (nbRleSegments>1) { - for(int k=1; k<=nbRleSegments-1; k++) { // reading RLE Segments + for(unsigned int k=1; k<=nbRleSegments-1; k++) { // reading RLE Segments RleSegmentLength[k]=RleSegmentOffsetTable[k+1]-RleSegmentOffsetTable[k]; ftellRes=ftell(fp); - if (DEBUG)printf (" (in) Segment %d : Length = %d x(%x) Start at %x\n", - k,RleSegmentLength[k],RleSegmentLength[k], ftellRes); fragmentBegining=ftell(fp); - _gdcm_read_RLE_fragment (&im, RleSegmentLength[k],uncompressedSegmentSize,fp); + gdcm_read_RLE_fragment (&im, RleSegmentLength[k],uncompressedSegmentSize,fp); fseek(fp,fragmentBegining,SEEK_SET); fseek(fp,RleSegmentLength[k],SEEK_CUR); } } RleSegmentLength[nbRleSegments] = fragmentLength - RleSegmentOffsetTable[nbRleSegments]; ftellRes=ftell(fp); - if (DEBUG)printf (" (out)Segment %d : Length = %d x(%x) Start at %x\n", - nbRleSegments, - RleSegmentLength[nbRleSegments],RleSegmentLength[nbRleSegments], - ftellRes); fragmentBegining=ftell(fp); - _gdcm_read_RLE_fragment (&im, RleSegmentLength[nbRleSegments],uncompressedSegmentSize, fp); + gdcm_read_RLE_fragment (&im, RleSegmentLength[nbRleSegments],uncompressedSegmentSize, fp); fseek(fp,fragmentBegining,SEEK_SET); fseek(fp,RleSegmentLength[nbRleSegments],SEEK_CUR); @@ -134,31 +116,44 @@ gdcmFile::gdcm_read_RLE_file (void * image_buffer) { ftellRes=ftell(fp); fread(&ItemTagGr,2,1,fp); // Reading (fffe) : Item Tag Gr fread(&ItemTagEl,2,1,fp); // Reading (e000) : Item Tag El - if(GetSwapCode()) { - ItemTagGr=SwapShort(ItemTagGr); - ItemTagEl=SwapShort(ItemTagEl); + if(Header->GetSwapCode()) { + ItemTagGr=Header->SwapShort(ItemTagGr); + ItemTagEl=Header->SwapShort(ItemTagEl); } - if (DEBUG)printf ("at %x : ItemTag (should be fffe,e000 or e0dd): %04x,%04x\n", - ftellRes,ItemTagGr,ItemTagEl ); } - return (1); -} + + if (Header->GetBitsAllocated()==16) { // try to deal with RLE 16 Bits + + im = (char *)image_buffer; + // need to make 16 Bits Pixels from Low Byte and Hight Byte 'Planes' + + int l = Header->GetXSize()*Header->GetYSize(); + int nbFrames = Header->GetZSize(); + char * newDest = new char[l*nbFrames*2]; + char *x = newDest; + char * a = (char *)image_buffer; + char * b = a + l; - /* -------------------------------------------------------------------- */ - // - // RLE LossLess Fragment - // - /* -------------------------------------------------------------------- */ + for (int i=0;i