2 * Copyright (c) 2005, Herve Drolon, FreeImage Team
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
18 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24 * POSSIBILITY OF SUCH DAMAGE.
27 #include "opj_includes.h"
29 opj_image_t* opj_image_create0(void) {
30 opj_image_t *image = (opj_image_t*)opj_calloc(1, sizeof(opj_image_t));
34 opj_image_header_t* opj_image_header_create0(void) {
35 opj_image_header_t *image_header = (opj_image_header_t*)opj_calloc(1, sizeof(opj_image_header_t));
39 opj_image_t* OPJ_CALLCONV opj_image_create(int numcmpts, opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc) {
41 opj_image_t *image = NULL;
43 image = (opj_image_t*) opj_calloc(1, sizeof(opj_image_t));
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));
50 fprintf(stderr,"Unable to allocate memory for image.\n");
51 opj_image_destroy(image);
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));
68 fprintf(stderr,"Unable to allocate memory for image.\n");
69 opj_image_destroy(image);
78 // TODO remove this one
79 void OPJ_CALLCONV opj_image_destroy(opj_image_t *image) {
83 /* image components */
84 for(i = 0; i < image->numcomps; i++) {
85 opj_image_comp_t *image_comp = &image->comps[i];
86 if(image_comp->data) {
87 opj_free(image_comp->data);
90 opj_free(image->comps);
97 void OPJ_CALLCONV opj_image_header_destroy(opj_image_header_t *image_header) {
99 if(image_header->comps) {
100 /* image components */
101 opj_free(image_header->comps);
103 if(image_header->icc_profile_buf) {
104 opj_free(image_header->icc_profile_buf);
106 opj_free(image_header);
111 * Updates the components characteristics of the image from the coding parameters.
113 * @param p_image_header the image header to update.
114 * @param p_cp the coding parameters from which to update the image.
116 void opj_image_comp_header_update(opj_image_header_t * p_image_header, const opj_cp_v2_t * p_cp)
118 OPJ_UINT32 i, l_width, l_height;
119 OPJ_INT32 l_x0, l_y0, l_x1, l_y1;
120 OPJ_INT32 l_comp_x0, l_comp_y0, l_comp_x1, l_comp_y1;
121 opj_image_comp_header_t* l_img_comp = NULL;
123 l_x0 = int_max(p_cp->tx0 , p_image_header->x0);
124 l_y0 = int_max(p_cp->ty0 , p_image_header->y0);
125 l_x1 = int_min(p_cp->tx0 + p_cp->tw * p_cp->tdx, p_image_header->x1);
126 l_y1 = int_min(p_cp->ty0 + p_cp->th * p_cp->tdy, p_image_header->y1);
128 l_img_comp = p_image_header->comps;
129 for (i = 0; i < p_image_header->numcomps; ++i) {
130 l_comp_x0 = int_ceildiv(l_x0, l_img_comp->dx);
131 l_comp_y0 = int_ceildiv(l_y0, l_img_comp->dy);
132 l_comp_x1 = int_ceildiv(l_x1, l_img_comp->dx);
133 l_comp_y1 = int_ceildiv(l_y1, l_img_comp->dy);
134 l_width = int_ceildivpow2(l_comp_x1 - l_comp_x0, l_img_comp->factor);
135 l_height = int_ceildivpow2(l_comp_y1 - l_comp_y0, l_img_comp->factor);
136 l_img_comp->w = l_width;
137 l_img_comp->h = l_height;
138 l_img_comp->x0 = l_x0;
139 l_img_comp->y0 = l_y0;