96 lines
3.0 KiB
C
96 lines
3.0 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 <stdlib.h>
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#include "ext_openjpeg.h"
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#include "cio.h"
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#include "j2k.h"
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/*
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* Get main headr marker size
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*
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* @param[in] type marker type
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* @param[in] cstr_info codestream information
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* @param[in] cio file input handle
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* @return marker size
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*/
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unsigned short get_mh_markersize( unsigned short type, opj_codestream_info_t cstr_info, opj_cio_t *cio);
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void add_mainheader_marker_info( opj_cio_t *cio, opj_codestream_info_t *cstr_info)
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{
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opj_marker_info_t marker;
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int pos;
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cstr_info->marker = (opj_marker_info_t *)malloc( 100*sizeof(opj_marker_info_t)); // max 100
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pos = cstr_info->main_head_start;
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cio_seek( cio, pos);
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while( pos <= cstr_info->main_head_end){
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marker.type = cio_read( cio, 2);
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marker.pos = cio_tell( cio);
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marker.len = get_mh_markersize( marker.type, *cstr_info, cio);
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cio_skip( cio, marker.len);
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cstr_info->marker[ cstr_info->marknum] = marker;
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cstr_info->marknum++;
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pos = cio_tell( cio);
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}
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}
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unsigned short get_mh_markersize( unsigned short type, opj_codestream_info_t cstr_info, opj_cio_t *cio)
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{
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unsigned short siz;
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int pos;
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siz = 0;
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switch( type){
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case J2K_MS_SOC:
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siz = 0;
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break;
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case J2K_MS_SIZ:
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siz = 38+3*cstr_info.numcomps;
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break;
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case J2K_MS_COD:
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case J2K_MS_QCD:
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case J2K_MS_COM:
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pos = cio_tell( cio);
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siz = cio_read( cio, 2);
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cio_seek( cio, pos);
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break;
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default:
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fprintf( stderr, "marker %x length not defined yet!\n", type);
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}
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return siz;
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}
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