openjpeg/src/lib/openmj2/image.c

/*
 * The copyright in this software is being made available under the 2-clauses
 * BSD License, included below. This software may be subject to other third
 * party and contributor rights, including patent rights, and no such rights
 * are granted under this license.
 *
 * Copyright (c) 2005, Herve Drolon, FreeImage Team
 * 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 "opj_includes.h"

opj_image_t* opj_image_create0(void)
{
    opj_image_t *image = (opj_image_t*)opj_calloc(1, sizeof(opj_image_t));
    return image;
}

opj_image_t* OPJ_CALLCONV opj_image_create(int numcmpts,
        opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc)
{
    int compno;
    opj_image_t *image = NULL;

    image = (opj_image_t*) opj_calloc(1, sizeof(opj_image_t));
    if (image) {
        image->color_space = clrspc;
        image->numcomps = numcmpts;
        /* allocate memory for the per-component information */
        image->comps = (opj_image_comp_t*)opj_malloc(image->numcomps * sizeof(
                           opj_image_comp_t));
        if (!image->comps) {
            fprintf(stderr, "Unable to allocate memory for image.\n");
            opj_image_destroy(image);
            return NULL;
        }
        /* create the individual image components */
        for (compno = 0; compno < numcmpts; compno++) {
            opj_image_comp_t *comp = &image->comps[compno];
            comp->dx = cmptparms[compno].dx;
            comp->dy = cmptparms[compno].dy;
            comp->w = cmptparms[compno].w;
            comp->h = cmptparms[compno].h;
            comp->x0 = cmptparms[compno].x0;
            comp->y0 = cmptparms[compno].y0;
            comp->prec = cmptparms[compno].prec;
            comp->bpp = cmptparms[compno].bpp;
            comp->sgnd = cmptparms[compno].sgnd;
            comp->data = (int*) opj_calloc(comp->w * comp->h, sizeof(int));
            if (!comp->data) {
                fprintf(stderr, "Unable to allocate memory for image.\n");
                opj_image_destroy(image);
                return NULL;
            }
        }
    }

    return image;
}

void OPJ_CALLCONV opj_image_destroy(opj_image_t *image)
{
    int i;
    if (image) {
        if (image->comps) {
            /* image components */
            for (i = 0; i < image->numcomps; i++) {
                opj_image_comp_t *image_comp = &image->comps[i];
                if (image_comp->data) {
                    opj_free(image_comp->data);
                }
            }
            opj_free(image->comps);
        }
        opj_free(image);
    }
}