212 lines
6.7 KiB
C
212 lines
6.7 KiB
C
/*
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* $Id: cidx_manager.c 897 2011-08-28 21:43:57Z Kaori.Hagihara@gmail.com $
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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) 2003-2004, Yannick Verschueren
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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 "opj_includes.h"
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/*
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* Write CPTR Codestream finder box
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*
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* @param[in] coff offset of j2k codestream
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* @param[in] clen length of j2k codestream
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* @param[in] cio file output handle
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*/
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void write_cptr(int coff, int clen, opj_cio_t *cio);
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/*
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* Write main header index table (box)
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*
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* @param[in] coff offset of j2k codestream
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* @param[in] cstr_info codestream information
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* @param[in] cio file output handle
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* @return length of mainmhix box
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*/
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int write_mainmhix( int coff, opj_codestream_info_t cstr_info, opj_cio_t *cio);
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/*
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* Check if EPH option is used
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*
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* @param[in] coff offset of j2k codestream
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* @param[in] markers marker information
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* @param[in] marknum number of markers
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* @param[in] cio file output handle
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* @return true if EPH is used
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*/
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opj_bool check_EPHuse( int coff, opj_marker_info_t *markers, int marknum, opj_cio_t *cio);
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int write_cidx( int offset, opj_cio_t *cio, opj_image_t *image, opj_codestream_info_t cstr_info, int j2klen)
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{
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int len, i, lenp;
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opj_jp2_box_t *box;
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int num_box = 0;
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opj_bool EPHused;
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(void)image; /* unused ? */
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lenp = -1;
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box = (opj_jp2_box_t *)opj_calloc( 32, sizeof(opj_jp2_box_t));
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for (i=0;i<2;i++){
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if(i)
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cio_seek( cio, lenp);
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lenp = cio_tell( cio);
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cio_skip( cio, 4); /* L [at the end] */
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cio_write( cio, JPIP_CIDX, 4); /* CIDX */
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write_cptr( offset, cstr_info.codestream_size, cio);
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write_manf( i, num_box, box, cio);
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num_box = 0;
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box[num_box].length = write_mainmhix( offset, cstr_info, cio);
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box[num_box].type = JPIP_MHIX;
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num_box++;
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box[num_box].length = write_tpix( offset, cstr_info, j2klen, cio);
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box[num_box].type = JPIP_TPIX;
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num_box++;
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box[num_box].length = write_thix( offset, cstr_info, cio);
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box[num_box].type = JPIP_THIX;
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num_box++;
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EPHused = check_EPHuse( offset, cstr_info.marker, cstr_info.marknum, cio);
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box[num_box].length = write_ppix( offset, cstr_info, EPHused, j2klen, cio);
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box[num_box].type = JPIP_PPIX;
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num_box++;
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box[num_box].length = write_phix( offset, cstr_info, EPHused, j2klen, cio);
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box[num_box].type = JPIP_PHIX;
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num_box++;
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len = cio_tell( cio)-lenp;
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cio_seek( cio, lenp);
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cio_write( cio, len, 4); /* L */
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cio_seek( cio, lenp+len);
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}
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opj_free( box);
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return len;
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}
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void write_cptr(int coff, int clen, opj_cio_t *cio)
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{
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int len, lenp;
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lenp = cio_tell( cio);
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cio_skip( cio, 4); /* L [at the end] */
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cio_write( cio, JPIP_CPTR, 4); /* T */
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cio_write( cio, 0, 2); /* DR A PRECISER !! */
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cio_write( cio, 0, 2); /* CONT */
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cio_write( cio, coff, 8); /* COFF A PRECISER !! */
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cio_write( cio, clen, 8); /* CLEN */
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len = cio_tell( cio) - lenp;
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cio_seek( cio, lenp);
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cio_write( cio, len, 4); /* L */
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cio_seek( cio, lenp+len);
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}
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void write_manf(int second, int v, opj_jp2_box_t *box, opj_cio_t *cio)
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{
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int len, lenp, i;
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lenp = cio_tell( cio);
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cio_skip( cio, 4); /* L [at the end] */
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cio_write( cio, JPIP_MANF,4); /* T */
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if (second){ /* Write only during the second pass */
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for( i=0; i<v; i++){
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cio_write( cio, box[i].length, 4); /* Box length */
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cio_write( cio, box[i].type, 4); /* Box type */
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}
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}
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len = cio_tell( cio) - lenp;
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cio_seek( cio, lenp);
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cio_write( cio, len, 4); /* L */
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cio_seek( cio, lenp+len);
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}
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int write_mainmhix( int coff, opj_codestream_info_t cstr_info, opj_cio_t *cio)
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{
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int i;
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int len, lenp;
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lenp = cio_tell( cio);
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cio_skip( cio, 4); /* L [at the end] */
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cio_write( cio, JPIP_MHIX, 4); /* MHIX */
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cio_write( cio, cstr_info.main_head_end-cstr_info.main_head_start+1, 8); /* TLEN */
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for(i = 1; i < cstr_info.marknum; i++){ /* Marker restricted to 1 apparition, skip SOC marker */
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cio_write( cio, cstr_info.marker[i].type, 2);
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cio_write( cio, 0, 2);
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cio_write( cio, cstr_info.marker[i].pos-coff, 8);
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cio_write( cio, cstr_info.marker[i].len, 2);
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}
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len = cio_tell( cio) - lenp;
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cio_seek( cio, lenp);
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cio_write( cio, len, 4); /* L */
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cio_seek( cio, lenp+len);
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return len;
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}
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opj_bool check_EPHuse( int coff, opj_marker_info_t *markers, int marknum, opj_cio_t *cio)
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{
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opj_bool EPHused = OPJ_FALSE;
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int i=0;
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int org_pos;
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unsigned int Scod;
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for(i = 0; i < marknum; i++){
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if( markers[i].type == J2K_MS_COD){
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org_pos = cio_tell( cio);
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cio_seek( cio, coff+markers[i].pos+2);
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Scod = cio_read( cio, 1);
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if( ((Scod >> 2) & 1))
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EPHused = OPJ_TRUE;
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cio_seek( cio, org_pos);
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break;
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}
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}
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return EPHused;
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}
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