1 /*=========================================================================
4 Module: $RCSfile: gdcmJpeg2000.cxx,v $
6 Date: $Date: 2005/09/20 09:24:10 $
7 Version: $Revision: 1.28 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
18 #include "gdcmFileHelper.h"
19 #include "gdcmDebug.h"
23 #include <jasper/jasper.h>
27 //-----------------------------------------------------------------------------
29 * \brief routine for JPEG decompression
31 * @param inputdata inputdata
32 * @param inputlength inputlength
33 * @return 1 on success, 0 on error
36 bool gdcm_read_JPEG2000_file (void* raw, char *inputdata, size_t inputlength)
39 std::cerr << "Inputlenght=" << inputlength << std::endl;
40 std::ofstream out("/tmp/jpeg2000.jpc", std::ios::binary);
41 out.write((char*)inputdata,inputlength);
44 jas_init(); //important...
45 jas_stream_t *jasStream =
46 jas_stream_memopen((char *)inputdata, inputlength);
49 if ((fmtid = jas_image_getfmt(jasStream)) < 0)
51 gdcmErrorMacro("unknown image format");
56 jas_image_t *jasImage /* = NULL*/; // Useless assignation
57 if (!(jasImage = jas_image_decode(jasStream, fmtid, 0)))
59 gdcmErrorMacro("cannot decode image");
64 jas_stream_close(jasStream);
65 int numcmpts = jas_image_numcmpts(jasImage);
66 int width = jas_image_cmptwidth(jasImage, 0);
67 int height = jas_image_cmptheight(jasImage, 0);
68 int prec = jas_image_cmptprec(jasImage, 0);
71 // The following should serioulsy be rewritten I cannot believe we need to
72 // do a per pixel decompression, there should be a way to read a full
76 uint8_t *data8 = (uint8_t*)raw;
77 for ( i = 0; i < height; i++)
78 for ( j = 0; j < width; j++)
79 for ( k= 0; k < numcmpts; k++)
80 *data8++ = (uint8_t)(jas_image_readcmptsample(jasImage, k, j ,i ));
84 uint16_t *data16 = (uint16_t*)raw;
85 for ( i = 0; i < height; i++)
86 for ( j = 0; j < width; j++)
87 for ( k= 0; k < numcmpts; k++)
88 *data16++ = (uint16_t)(jas_image_readcmptsample(jasImage, k, j ,i ));
92 uint32_t *data32 = (uint32_t*)raw;
93 for ( i = 0; i < height; i++)
94 for ( j = 0; j < width; j++)
95 for ( k= 0; k < numcmpts; k++)
96 *data32++ = (uint32_t)(jas_image_readcmptsample(jasImage, k, j ,i ));
99 jas_image_destroy(jasImage);
100 jas_image_clearfmts();
103 //delete the jpeg temp buffer
105 std::ofstream rawout("/tmp/jpeg2000.raw");
106 rawout.write((char*)raw,height*width*numcmpts*((prec+4)/8));
114 //-----------------------------------------------------------------------------
115 } // end namespace gdcm