openjpeg/src/lib/openjpip/ihdrbox_manager.c

/*
 * $Id$
 *
 * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
 * Copyright (c) 2002-2014, Professor Benoit Macq
 * 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.
 */

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include "ihdrbox_manager.h"

ihdrbox_param_t * gene_ihdrbox(metadatalist_param_t *metadatalist,
                               Byte_t *jpipstream)
{
    ihdrbox_param_t *ihdrbox;
    metadata_param_t *meta;
    box_param_t *jp2h, *ihdr;
    int bpc_val;

    jp2h = NULL;
    meta = metadatalist->first;
    while (meta) {
        if (meta->boxlist) {
            jp2h = search_box("jp2h", meta->boxlist);
            if (jp2h) {
                break;
            }
        }
        meta = meta->next;
    }
    if (!jp2h) {
        fprintf(stderr, "jp2h box not found\n");
        return NULL;
    }

    ihdr = gene_boxbyTypeinStream(jpipstream, get_DBoxoff(jp2h), get_DBoxlen(jp2h),
                                  "ihdr");

    if (!ihdr) {
        fprintf(stderr, "ihdr box not found\n");
        return NULL;
    }

    ihdrbox = (ihdrbox_param_t *)malloc(sizeof(ihdrbox_param_t));

    ihdrbox->height = big4(jpipstream + get_DBoxoff(ihdr));
    ihdrbox->width  = big4(jpipstream + get_DBoxoff(ihdr) + 4);
    ihdrbox->nc     = big2(jpipstream + get_DBoxoff(ihdr) + 8);
    bpc_val = *(jpipstream + get_DBoxoff(ihdr) + 10) + 1;
    assert(bpc_val >= 0 && bpc_val <= 255);
    ihdrbox->bpc    = (Byte_t)bpc_val;

    free(ihdr);

    return ihdrbox;
}