/*
- * Copyright (c) 2005, Herv� Drolon, FreeImage Team
+ * Copyright (c) 2005, Herve Drolon, FreeImage Team
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* POSSIBILITY OF SUCH DAMAGE.
*/
-
#include "opj_includes.h"
-opj_image_t* opj_image_create0() {
- opj_image_t *image = (opj_image_t*)opj_malloc(sizeof(opj_image_t));
- return image;
+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_image_create(int numcmpts, opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc) {
- int compno;
- opj_image_t *image = NULL;
+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_malloc(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) {
- 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_malloc(comp->w * comp->h * sizeof(int));
- if(!comp->data) {
- opj_image_destroy(image);
- return 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;
+ return image;
}
-void 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);
- }
+void OPJ_CALLCONV opj_image_destroy(opj_image_t *image) {
+ if(image) {
+ if(image->comps) {
+ OPJ_UINT32 compno;
+ /* image components */
+ for(compno = 0; compno < image->numcomps; compno++) {
+ opj_image_comp_t *image_comp = &(image->comps[compno]);
+ if(image_comp->data) {
+ opj_free(image_comp->data);
+ }
+ }
+ opj_free(image->comps);
+ }
+
+ if(image->icc_profile_buf) {
+ opj_free(image->icc_profile_buf);
+ }
+ //FIXME opj_free(image);
+ }
}
+/**
+ * Updates the components characteristics of the image from the coding parameters.
+ *
+ * @param p_image_header the image header to update.
+ * @param p_cp the coding parameters from which to update the image.
+ */
+void opj_image_comp_header_update(opj_image_t * p_image_header, const struct opj_cp_v2 * p_cp)
+{
+ OPJ_UINT32 i, l_width, l_height;
+ OPJ_INT32 l_x0, l_y0, l_x1, l_y1;
+ OPJ_INT32 l_comp_x0, l_comp_y0, l_comp_x1, l_comp_y1;
+ opj_image_comp_t* l_img_comp = NULL;
+
+ l_x0 = int_max(p_cp->tx0 , p_image_header->x0);
+ l_y0 = int_max(p_cp->ty0 , p_image_header->y0);
+ l_x1 = int_min(p_cp->tx0 + p_cp->tw * p_cp->tdx, p_image_header->x1);
+ l_y1 = int_min(p_cp->ty0 + p_cp->th * p_cp->tdy, p_image_header->y1);
+
+ l_img_comp = p_image_header->comps;
+ for (i = 0; i < p_image_header->numcomps; ++i) {
+ l_comp_x0 = int_ceildiv(l_x0, l_img_comp->dx);
+ l_comp_y0 = int_ceildiv(l_y0, l_img_comp->dy);
+ l_comp_x1 = int_ceildiv(l_x1, l_img_comp->dx);
+ l_comp_y1 = int_ceildiv(l_y1, l_img_comp->dy);
+ l_width = int_ceildivpow2(l_comp_x1 - l_comp_x0, l_img_comp->factor);
+ l_height = int_ceildivpow2(l_comp_y1 - l_comp_y0, l_img_comp->factor);
+ l_img_comp->w = l_width;
+ l_img_comp->h = l_height;
+ l_img_comp->x0 = l_comp_x0/*l_x0*/;
+ l_img_comp->y0 = l_comp_y0/*l_y0*/;
+ ++l_img_comp;
+ }
+}
projects / openjpeg.git / blobdiff