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 { 36 opj_image_t *image = (opj_image_t*)opj_calloc(1, sizeof(opj_image_t)); 37 return image; 38 } 39 40 opj_image_t* OPJ_CALLCONV opj_image_create(OPJ_UINT32 numcmpts, 41 opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc) 42 { 43 OPJ_UINT32 compno; 44 opj_image_t *image = NULL; 45 46 image = (opj_image_t*) opj_calloc(1, sizeof(opj_image_t)); 47 if (image) { 48 image->color_space = clrspc; 49 image->numcomps = numcmpts; 50 /* allocate memory for the per-component information */ 51 image->comps = (opj_image_comp_t*)opj_calloc(1, 52 image->numcomps * sizeof(opj_image_comp_t)); 53 if (!image->comps) { 54 /* TODO replace with event manager, breaks API */ 55 /* fprintf(stderr,"Unable to allocate memory for image.\n"); */ 56 opj_image_destroy(image); 57 return NULL; 58 } 59 /* create the individual image components */ 60 for (compno = 0; compno < numcmpts; compno++) { 61 opj_image_comp_t *comp = &image->comps[compno]; 62 comp->dx = cmptparms[compno].dx; 63 comp->dy = cmptparms[compno].dy; 64 comp->w = cmptparms[compno].w; 65 comp->h = cmptparms[compno].h; 66 comp->x0 = cmptparms[compno].x0; 67 comp->y0 = cmptparms[compno].y0; 68 comp->prec = cmptparms[compno].prec; 69 comp->bpp = cmptparms[compno].bpp; 70 comp->sgnd = cmptparms[compno].sgnd; 71 if (comp->h != 0 && 72 (OPJ_SIZE_T)comp->w > SIZE_MAX / comp->h / sizeof(OPJ_INT32)) { 73 /* TODO event manager */ 74 opj_image_destroy(image); 75 return NULL; 76 } 77 comp->data = (OPJ_INT32*) opj_image_data_alloc( 78 (size_t)comp->w * comp->h * sizeof(OPJ_INT32)); 79 if (!comp->data) { 80 /* TODO replace with event manager, breaks API */ 81 /* fprintf(stderr,"Unable to allocate memory for image.\n"); */ 82 opj_image_destroy(image); 83 return NULL; 84 } 85 memset(comp->data, 0, (size_t)comp->w * comp->h * sizeof(OPJ_INT32)); 86 } 87 } 88 89 return image; 90 } 91 92 void OPJ_CALLCONV opj_image_destroy(opj_image_t *image) 93 { 94 if (image) { 95 if (image->comps) { 96 OPJ_UINT32 compno; 97 98 /* image components */ 99 for (compno = 0; compno < image->numcomps; compno++) { 100 opj_image_comp_t *image_comp = &(image->comps[compno]); 101 if (image_comp->data) { 102 opj_image_data_free(image_comp->data); 103 } 104 } 105 opj_free(image->comps); 106 } 107 108 if (image->icc_profile_buf) { 109 opj_free(image->icc_profile_buf); 110 } 111 112 opj_free(image); 113 } 114 } 115 116 /** 117 * Updates the components characteristics of the image from the coding parameters. 118 * 119 * @param p_image_header the image header to update. 120 * @param p_cp the coding parameters from which to update the image. 121 */ 122 void opj_image_comp_header_update(opj_image_t * p_image_header, 123 const struct opj_cp * p_cp) 124 { 125 OPJ_UINT32 i, l_width, l_height; 126 OPJ_UINT32 l_x0, l_y0, l_x1, l_y1; 127 OPJ_UINT32 l_comp_x0, l_comp_y0, l_comp_x1, l_comp_y1; 128 opj_image_comp_t* l_img_comp = NULL; 129 130 l_x0 = opj_uint_max(p_cp->tx0, p_image_header->x0); 131 l_y0 = opj_uint_max(p_cp->ty0, p_image_header->y0); 132 l_x1 = p_cp->tx0 + (p_cp->tw - 1U) * 133 p_cp->tdx; /* validity of p_cp members used here checked in opj_j2k_read_siz. Can't overflow. */ 134 l_y1 = p_cp->ty0 + (p_cp->th - 1U) * p_cp->tdy; /* can't overflow */ 135 l_x1 = opj_uint_min(opj_uint_adds(l_x1, p_cp->tdx), 136 p_image_header->x1); /* use add saturated to prevent overflow */ 137 l_y1 = opj_uint_min(opj_uint_adds(l_y1, p_cp->tdy), 138 p_image_header->y1); /* use add saturated to prevent overflow */ 139 140 l_img_comp = p_image_header->comps; 141 for (i = 0; i < p_image_header->numcomps; ++i) { 142 l_comp_x0 = opj_uint_ceildiv(l_x0, l_img_comp->dx); 143 l_comp_y0 = opj_uint_ceildiv(l_y0, l_img_comp->dy); 144 l_comp_x1 = opj_uint_ceildiv(l_x1, l_img_comp->dx); 145 l_comp_y1 = opj_uint_ceildiv(l_y1, l_img_comp->dy); 146 l_width = opj_uint_ceildivpow2(l_comp_x1 - l_comp_x0, l_img_comp->factor); 147 l_height = opj_uint_ceildivpow2(l_comp_y1 - l_comp_y0, l_img_comp->factor); 148 l_img_comp->w = l_width; 149 l_img_comp->h = l_height; 150 l_img_comp->x0 = l_comp_x0; 151 l_img_comp->y0 = l_comp_y0; 152 ++l_img_comp; 153 } 154 } 155 156 157 /** 158 * Copy only header of image and its component header (no data are copied) 159 * if dest image have data, they will be freed 160 * 161 * @param p_image_src the src image 162 * @param p_image_dest the dest image 163 * 164 */ 165 void opj_copy_image_header(const opj_image_t* p_image_src, 166 opj_image_t* p_image_dest) 167 { 168 OPJ_UINT32 compno; 169 170 /* preconditions */ 171 assert(p_image_src != 00); 172 assert(p_image_dest != 00); 173 174 p_image_dest->x0 = p_image_src->x0; 175 p_image_dest->y0 = p_image_src->y0; 176 p_image_dest->x1 = p_image_src->x1; 177 p_image_dest->y1 = p_image_src->y1; 178 179 if (p_image_dest->comps) { 180 for (compno = 0; compno < p_image_dest->numcomps; compno++) { 181 opj_image_comp_t *image_comp = &(p_image_dest->comps[compno]); 182 if (image_comp->data) { 183 opj_image_data_free(image_comp->data); 184 } 185 } 186 opj_free(p_image_dest->comps); 187 p_image_dest->comps = NULL; 188 } 189 190 p_image_dest->numcomps = p_image_src->numcomps; 191 192 p_image_dest->comps = (opj_image_comp_t*) opj_malloc(p_image_dest->numcomps * 193 sizeof(opj_image_comp_t)); 194 if (!p_image_dest->comps) { 195 p_image_dest->comps = NULL; 196 p_image_dest->numcomps = 0; 197 return; 198 } 199 200 for (compno = 0; compno < p_image_dest->numcomps; compno++) { 201 memcpy(&(p_image_dest->comps[compno]), 202 &(p_image_src->comps[compno]), 203 sizeof(opj_image_comp_t)); 204 p_image_dest->comps[compno].data = NULL; 205 } 206 207 p_image_dest->color_space = p_image_src->color_space; 208 p_image_dest->icc_profile_len = p_image_src->icc_profile_len; 209 210 if (p_image_dest->icc_profile_len) { 211 p_image_dest->icc_profile_buf = (OPJ_BYTE*)opj_malloc( 212 p_image_dest->icc_profile_len); 213 if (!p_image_dest->icc_profile_buf) { 214 p_image_dest->icc_profile_buf = NULL; 215 p_image_dest->icc_profile_len = 0; 216 return; 217 } 218 memcpy(p_image_dest->icc_profile_buf, 219 p_image_src->icc_profile_buf, 220 p_image_src->icc_profile_len); 221 } else { 222 p_image_dest->icc_profile_buf = NULL; 223 } 224 225 return; 226 } 227 228 opj_image_t* OPJ_CALLCONV opj_image_tile_create(OPJ_UINT32 numcmpts, 229 opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc) 230 { 231 OPJ_UINT32 compno; 232 opj_image_t *image = 00; 233 234 image = (opj_image_t*) opj_calloc(1, sizeof(opj_image_t)); 235 if (image) { 236 237 image->color_space = clrspc; 238 image->numcomps = numcmpts; 239 240 /* allocate memory for the per-component information */ 241 image->comps = (opj_image_comp_t*)opj_calloc(image->numcomps, 242 sizeof(opj_image_comp_t)); 243 if (!image->comps) { 244 opj_image_destroy(image); 245 return 00; 246 } 247 248 /* create the individual image components */ 249 for (compno = 0; compno < numcmpts; compno++) { 250 opj_image_comp_t *comp = &image->comps[compno]; 251 comp->dx = cmptparms[compno].dx; 252 comp->dy = cmptparms[compno].dy; 253 comp->w = cmptparms[compno].w; 254 comp->h = cmptparms[compno].h; 255 comp->x0 = cmptparms[compno].x0; 256 comp->y0 = cmptparms[compno].y0; 257 comp->prec = cmptparms[compno].prec; 258 comp->sgnd = cmptparms[compno].sgnd; 259 comp->data = 0; 260 } 261 } 262 263 return image; 264 } 265
