87 lines
3.1 KiB
C
87 lines
3.1 KiB
C
/*
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* $Id$
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*
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* Copyright (c) 2002-2011, Communications and Remote Sensing Laboratory, Universite catholique de Louvain (UCL), Belgium
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* Copyright (c) 2002-2011, Professor Benoit Macq
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* Copyright (c) 2010-2011, Kaori Hagihara
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include "ext_openjpeg.h"
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#include "j2k_to_idxjp2.h"
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#include "event_mgr_handler.h"
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opj_image_t * decode_j2k( unsigned char *j2kstream, int j2klen, opj_codestream_info_t *cstr_info)
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{
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opj_image_t *image;
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opj_dparameters_t parameters; /* decompression parameters */
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opj_dinfo_t *dinfo; /* handle to a decompressor */
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opj_cio_t *cio;
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opj_event_mgr_t event_mgr; /* event manager */
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/* set decoding parameters to default values */
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opj_set_default_decoder_parameters(¶meters);
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/* decode the code-stream */
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/* ---------------------- */
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/* JPEG-2000 codestream */
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/* get a decoder handle */
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dinfo = opj_create_decompress( CODEC_J2K);
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event_mgr = set_default_event_mgr();
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/* catch events using our callbacks and give a local context */
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opj_set_event_mgr((opj_common_ptr)dinfo, &event_mgr, stderr);
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/* setup the decoder decoding parameters using user parameters */
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opj_setup_decoder(dinfo, ¶meters);
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/* open a byte stream */
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cio = opj_cio_open((opj_common_ptr)dinfo, j2kstream, j2klen);
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/* decode the stream and fill the image structure */
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image = opj_decode_with_info(dinfo, cio, cstr_info);
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if(!image) {
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fprintf(stderr, "ERROR -> jp2_to_image: failed to decode image!\n");
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opj_destroy_decompress(dinfo);
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opj_cio_close(cio);
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return NULL;
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}
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if( cstr_info->marknum == 0)
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add_mainheader_marker_info( cio, cstr_info);
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/* close the byte stream */
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opj_cio_close(cio);
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/* free remaining structures */
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if(dinfo) {
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opj_destroy_decompress(dinfo);
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}
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return image;
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}
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