src/lib/openmj2/image.c

   1 /*
   2  * The copyright in this software is being made available under the 2-clauses
   3  * BSD License, included below. This software may be subject to other third
   4  * party and contributor rights, including patent rights, and no such rights
   5  * are granted under this license.
   6  *
   7  * Copyright (c) 2005, Herve Drolon, FreeImage Team
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted provided that the following conditions
  12  * are met:
  13  * 1. Redistributions of source code must retain the above copyright
  14  *    notice, this list of conditions and the following disclaimer.
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
  20  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
  23  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  29  * POSSIBILITY OF SUCH DAMAGE.
  30  */
  31
  32 #include "opj_includes.h"
  33
  34 opj_image_t* opj_image_create0(void) {
  35         opj_image_t *image = (opj_image_t*)opj_calloc(1, sizeof(opj_image_t));
  36         return image;
  37 }
  38
  39 opj_image_t* OPJ_CALLCONV opj_image_create(int numcmpts, opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc) {
  40         int compno;
  41         opj_image_t *image = NULL;
  42
  43         image = (opj_image_t*) opj_calloc(1, sizeof(opj_image_t));
  44         if(image) {
  45                 image->color_space = clrspc;
  46                 image->numcomps = numcmpts;
  47                 /* allocate memory for the per-component information */
  48                 image->comps = (opj_image_comp_t*)opj_malloc(image->numcomps * sizeof(opj_image_comp_t));
  49                 if(!image->comps) {
  50                         fprintf(stderr,"Unable to allocate memory for image.\n");
  51                         opj_image_destroy(image);
  52                         return NULL;
  53                 }
  54                 /* create the individual image components */
  55                 for(compno = 0; compno < numcmpts; compno++) {
  56                         opj_image_comp_t *comp = &image->comps[compno];
  57                         comp->dx = cmptparms[compno].dx;
  58                         comp->dy = cmptparms[compno].dy;
  59                         comp->w = cmptparms[compno].w;
  60                         comp->h = cmptparms[compno].h;
  61                         comp->x0 = cmptparms[compno].x0;
  62                         comp->y0 = cmptparms[compno].y0;
  63                         comp->prec = cmptparms[compno].prec;
  64                         comp->bpp = cmptparms[compno].bpp;
  65                         comp->sgnd = cmptparms[compno].sgnd;
  66                         comp->data = (int*) opj_calloc(comp->w * comp->h, sizeof(int));
  67                         if(!comp->data) {
  68                                 fprintf(stderr,"Unable to allocate memory for image.\n");
  69                                 opj_image_destroy(image);
  70                                 return NULL;
  71                         }
  72                 }
  73         }
  74
  75         return image;
  76 }
  77
  78 void OPJ_CALLCONV opj_image_destroy(opj_image_t *image) {
  79         int i;
  80         if(image) {
  81                 if(image->comps) {
  82                         /* image components */
  83                         for(i = 0; i < image->numcomps; i++) {
  84                                 opj_image_comp_t *image_comp = &image->comps[i];
  85                                 if(image_comp->data) {
  86                                         opj_free(image_comp->data);
  87                                 }
  88                         }
  89                         opj_free(image->comps);
  90                 }
  91                 opj_free(image);
  92         }
  93 }
  94