openjpeg-sys 1.0.11

OpenJPEG (JPEG 2000) FFI bindings
Documentation 
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/*
 * $Id: tpix_manager.c 897 2011-08-28 21:43:57Z Kaori.Hagihara@gmail.com $
 *
 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2014, Professor Benoit Macq
 * Copyright (c) 2003-2004, Yannick Verschueren
 * Copyright (c) 2010-2011, Kaori Hagihara
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*! \file
 *  \brief Modification of jpip.c from 2KAN indexer
 */

#include "opj_includes.h"

#define MAX(a,b) ((a)>(b)?(a):(b))

/*
 * Get number of maximum tile parts per tile
 *
 * @param[in] cstr_info codestream information
 * @return              number of maximum tile parts per tile
 */
int get_num_max_tile_parts(opj_codestream_info_t cstr_info);


/*
 * Write faix box of tpix
 *
 * @param[in] coff offset of j2k codestream
 * @param[in] compno    component number
 * @param[in] cstr_info codestream information
 * @param[in] j2klen    length of j2k codestream
 * @param[in] cio       file output handle
 * @return              length of faix box
 */

int opj_write_tpix(int coff,
                   opj_codestream_info_t cstr_info,
                   int j2klen, opj_stream_private_t *cio,
                   opj_event_mgr_t * p_manager)
{
    OPJ_BYTE l_data_header [4];
    OPJ_UINT32 len;
    OPJ_OFF_T lenp;

    lenp = opj_stream_tell(cio);
    opj_stream_skip(cio, 4, p_manager);
    opj_write_bytes(l_data_header, JPIP_TPIX, 4); /* TPIX */
    opj_stream_write_data(cio, l_data_header, 4, p_manager);

    opj_write_tpixfaix(coff, 0, cstr_info, j2klen, cio, p_manager);

    len = (OPJ_UINT32)(opj_stream_tell(cio) - lenp);

    opj_stream_skip(cio, lenp, p_manager);
    opj_write_bytes(l_data_header, len, 4); /* L              */
    opj_stream_write_data(cio, l_data_header, 4, p_manager);
    opj_stream_seek(cio, lenp + len, p_manager);

    return (int)len;
}

int opj_write_tpixfaix(int coff,
                       int compno,
                       opj_codestream_info_t cstr_info,
                       int j2klen,
                       opj_stream_private_t *cio,
                       opj_event_mgr_t * p_manager)
{
    OPJ_UINT32 len;
    OPJ_OFF_T lenp;
    OPJ_UINT32 i, j;
    OPJ_UINT32 Aux;
    OPJ_UINT32 num_max_tile_parts;
    OPJ_UINT32 size_of_coding; /* 4 or 8 */
    opj_tp_info_t tp;
    OPJ_BYTE l_data_header [8];
    OPJ_UINT32 version;

    num_max_tile_parts = (OPJ_UINT32)get_num_max_tile_parts(cstr_info);

    if (j2klen > pow(2, 32)) {
        size_of_coding =  8;
        version = num_max_tile_parts == 1 ? 1 : 3;
    } else {
        size_of_coding = 4;
        version = num_max_tile_parts == 1 ? 0 : 2;
    }

    lenp = opj_stream_tell(cio);
    opj_stream_skip(cio, 4, p_manager);         /* L [at the end]      */
    opj_write_bytes(l_data_header, JPIP_FAIX, 4); /* FAIX */
    opj_stream_write_data(cio, l_data_header, 4, p_manager);
    opj_write_bytes(l_data_header, version, 1); /* Version 0 = 4 bytes */
    opj_stream_write_data(cio, l_data_header, 1, p_manager);

    opj_write_bytes(l_data_header, num_max_tile_parts,
                    size_of_coding);       /* NMAX           */
    opj_stream_write_data(cio, l_data_header, size_of_coding, p_manager);
    opj_write_bytes(l_data_header, (OPJ_UINT32)(cstr_info.tw * cstr_info.th),
                    size_of_coding);  /* M              */
    opj_stream_write_data(cio, l_data_header, size_of_coding, p_manager);

    for (i = 0; i < (OPJ_UINT32)(cstr_info.tw * cstr_info.th); i++) {
        for (j = 0; j < (OPJ_UINT32)cstr_info.tile[i].num_tps; j++) {
            tp = cstr_info.tile[i].tp[j];

            opj_write_bytes(l_data_header, (OPJ_UINT32)(tp.tp_start_pos - coff),
                            size_of_coding);            /* start position */
            opj_stream_write_data(cio, l_data_header, size_of_coding, p_manager);
            opj_write_bytes(l_data_header,
                            (OPJ_UINT32)(tp.tp_end_pos - tp.tp_start_pos + 1),
                            size_of_coding); /* length         */
            opj_stream_write_data(cio, l_data_header, size_of_coding, p_manager);

            if (version & 0x02) {
                if (cstr_info.tile[i].num_tps == 1 && cstr_info.numdecompos[compno] > 1) {
                    Aux = (OPJ_UINT32)(cstr_info.numdecompos[compno] + 1);
                } else {
                    Aux = j + 1;
                }

                opj_write_bytes(l_data_header, Aux, 4);
                opj_stream_write_data(cio, l_data_header, 4, p_manager);

                /*cio_write(img.tile[i].tile_parts[j].num_reso_AUX,4);*/ /* Aux_i,j : Auxiliary value */
                /* fprintf(stderr,"AUX value %d\n",Aux);*/
            }
            /*cio_write(0,4);*/
        }
        /* PADDING */
        while (j < num_max_tile_parts) {

            opj_write_bytes(l_data_header, 0,
                            size_of_coding); /* start position            */
            opj_stream_write_data(cio, l_data_header, size_of_coding, p_manager);
            opj_write_bytes(l_data_header, 0,
                            size_of_coding); /* length                    */
            opj_stream_write_data(cio, l_data_header, size_of_coding, p_manager);

            if (version & 0x02) {
                opj_write_bytes(l_data_header, 0, 4);    /* Aux_i,j : Auxiliary value */
            }
            opj_stream_write_data(cio, l_data_header, 4, p_manager);
            j++;
        }
    }

    len = (OPJ_UINT32)(opj_stream_tell(cio) - lenp);
    opj_stream_seek(cio, lenp, p_manager);
    opj_write_bytes(l_data_header, len, 4); /* L  */
    opj_stream_write_data(cio, l_data_header, 4, p_manager);
    opj_stream_seek(cio, lenp + len, p_manager);

    return (int)len;
}

int get_num_max_tile_parts(opj_codestream_info_t cstr_info)
{
    int num_max_tp = 0, i;

    for (i = 0; i < cstr_info.tw * cstr_info.th; i++) {
        num_max_tp = MAX(cstr_info.tile[i].num_tps, num_max_tp);
    }

    return num_max_tp;
}