-// gdcmJpeg2000.cxx
-//-----------------------------------------------------------------------------
-#include <stdio.h>
-#include "gdcmFile.h"
+/*=========================================================================
+
+ Program: gdcm
+ Module: $RCSfile: gdcmJpeg2000.cxx,v $
+ Language: C++
+ Date: $Date: 2005/09/20 09:24:10 $
+ Version: $Revision: 1.28 $
+
+ 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.html 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 "gdcmFileHelper.h"
+#include "gdcmDebug.h"
+
+#include <iostream>
+#include <fstream>
+#include <jasper/jasper.h>
+namespace gdcm
+{
//-----------------------------------------------------------------------------
/**
- * \ingroup gdcmFile
* \brief routine for JPEG decompression
- * @param fp pointer to an already open file descriptor
- * JPEG2000 encoded image
- * @param image_buffer to receive uncompressed pixels
+ * @param raw raw
+ * @param inputdata inputdata
+ * @param inputlength inputlength
* @return 1 on success, 0 on error
- * @warning : not yet made
*/
-bool gdcmFile::gdcm_read_JPEG2000_file (FILE* fp,void* image_buffer) {
- (void)fp; //FIXME
- (void)image_buffer; //FIXME
- printf("Sorry JPEG 2000 File not yet taken into account\n");
- return false;
+bool gdcm_read_JPEG2000_file (void* raw, char *inputdata, size_t inputlength)
+{
+#if 0
+ std::cerr << "Inputlenght=" << inputlength << std::endl;
+ std::ofstream out("/tmp/jpeg2000.jpc", std::ios::binary);
+ out.write((char*)inputdata,inputlength);
+ out.close();
+#endif
+ jas_init(); //important...
+ jas_stream_t *jasStream =
+ jas_stream_memopen((char *)inputdata, inputlength);
+
+ int fmtid;
+ if ((fmtid = jas_image_getfmt(jasStream)) < 0)
+ {
+ gdcmErrorMacro("unknown image format");
+ return false;
+ }
+
+ // Decode the image.
+ jas_image_t *jasImage /* = NULL*/; // Useless assignation
+ if (!(jasImage = jas_image_decode(jasStream, fmtid, 0)))
+ {
+ gdcmErrorMacro("cannot decode image");
+ return false;
+ }
+
+ // close the stream.
+ jas_stream_close(jasStream);
+ int numcmpts = jas_image_numcmpts(jasImage);
+ int width = jas_image_cmptwidth(jasImage, 0);
+ int height = jas_image_cmptheight(jasImage, 0);
+ int prec = jas_image_cmptprec(jasImage, 0);
+ int i, j, k;
+
+ // The following should serioulsy be rewritten I cannot believe we need to
+ // do a per pixel decompression, there should be a way to read a full
+ // scanline...
+ if (prec == 8)
+ {
+ uint8_t *data8 = (uint8_t*)raw;
+ for ( i = 0; i < height; i++)
+ for ( j = 0; j < width; j++)
+ for ( k= 0; k < numcmpts; k++)
+ *data8++ = (uint8_t)(jas_image_readcmptsample(jasImage, k, j ,i ));
+ }
+ else if (prec <= 16)
+ {
+ uint16_t *data16 = (uint16_t*)raw;
+ for ( i = 0; i < height; i++)
+ for ( j = 0; j < width; j++)
+ for ( k= 0; k < numcmpts; k++)
+ *data16++ = (uint16_t)(jas_image_readcmptsample(jasImage, k, j ,i ));
+ }
+ else if (prec <= 32)
+ {
+ uint32_t *data32 = (uint32_t*)raw;
+ for ( i = 0; i < height; i++)
+ for ( j = 0; j < width; j++)
+ for ( k= 0; k < numcmpts; k++)
+ *data32++ = (uint32_t)(jas_image_readcmptsample(jasImage, k, j ,i ));
+ }
+
+ jas_image_destroy(jasImage);
+ jas_image_clearfmts();
+
+ //FIXME
+ //delete the jpeg temp buffer
+#if 0
+ std::ofstream rawout("/tmp/jpeg2000.raw");
+ rawout.write((char*)raw,height*width*numcmpts*((prec+4)/8));
+ rawout.close();
+#endif
+ delete[] inputdata;
+
+ return true;
}
//-----------------------------------------------------------------------------
+} // end namespace gdcm