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265 lines
9.6 KiB
265 lines
9.6 KiB
/*
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* The copyright in this software is being made available under the 2-clauses
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* BSD License, included below. This software may be subject to other third
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* party and contributor rights, including patent rights, and no such rights
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* are granted under this license.
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*
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* Copyright (c) 2005, Herve Drolon, FreeImage Team
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "opj_includes.h"
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opj_image_t* opj_image_create0(void)
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{
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opj_image_t *image = (opj_image_t*)opj_calloc(1, sizeof(opj_image_t));
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return image;
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}
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opj_image_t* OPJ_CALLCONV opj_image_create(OPJ_UINT32 numcmpts,
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opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc)
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{
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OPJ_UINT32 compno;
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opj_image_t *image = NULL;
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image = (opj_image_t*) opj_calloc(1, sizeof(opj_image_t));
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if (image) {
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image->color_space = clrspc;
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image->numcomps = numcmpts;
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/* allocate memory for the per-component information */
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image->comps = (opj_image_comp_t*)opj_calloc(image->numcomps,
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sizeof(opj_image_comp_t));
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if (!image->comps) {
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/* TODO replace with event manager, breaks API */
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/* fprintf(stderr,"Unable to allocate memory for image.\n"); */
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opj_image_destroy(image);
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return NULL;
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}
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/* create the individual image components */
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for (compno = 0; compno < numcmpts; compno++) {
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opj_image_comp_t *comp = &image->comps[compno];
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comp->dx = cmptparms[compno].dx;
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comp->dy = cmptparms[compno].dy;
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comp->w = cmptparms[compno].w;
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comp->h = cmptparms[compno].h;
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comp->x0 = cmptparms[compno].x0;
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comp->y0 = cmptparms[compno].y0;
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comp->prec = cmptparms[compno].prec;
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comp->bpp = cmptparms[compno].bpp;
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comp->sgnd = cmptparms[compno].sgnd;
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if (comp->h != 0 &&
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(OPJ_SIZE_T)comp->w > SIZE_MAX / comp->h / sizeof(OPJ_INT32)) {
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/* TODO event manager */
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opj_image_destroy(image);
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return NULL;
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}
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comp->data = (OPJ_INT32*) opj_image_data_alloc(
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(size_t)comp->w * comp->h * sizeof(OPJ_INT32));
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if (!comp->data) {
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/* TODO replace with event manager, breaks API */
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/* fprintf(stderr,"Unable to allocate memory for image.\n"); */
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opj_image_destroy(image);
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return NULL;
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}
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memset(comp->data, 0, (size_t)comp->w * comp->h * sizeof(OPJ_INT32));
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}
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}
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return image;
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}
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void OPJ_CALLCONV opj_image_destroy(opj_image_t *image)
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{
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if (image) {
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if (image->comps) {
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OPJ_UINT32 compno;
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/* image components */
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for (compno = 0; compno < image->numcomps; compno++) {
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opj_image_comp_t *image_comp = &(image->comps[compno]);
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if (image_comp->data) {
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opj_image_data_free(image_comp->data);
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}
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}
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opj_free(image->comps);
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}
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if (image->icc_profile_buf) {
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opj_free(image->icc_profile_buf);
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}
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opj_free(image);
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}
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}
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/**
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* Updates the components characteristics of the image from the coding parameters.
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*
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* @param p_image_header the image header to update.
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* @param p_cp the coding parameters from which to update the image.
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*/
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void opj_image_comp_header_update(opj_image_t * p_image_header,
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const struct opj_cp * p_cp)
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{
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OPJ_UINT32 i, l_width, l_height;
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OPJ_UINT32 l_x0, l_y0, l_x1, l_y1;
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OPJ_UINT32 l_comp_x0, l_comp_y0, l_comp_x1, l_comp_y1;
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opj_image_comp_t* l_img_comp = NULL;
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l_x0 = opj_uint_max(p_cp->tx0, p_image_header->x0);
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l_y0 = opj_uint_max(p_cp->ty0, p_image_header->y0);
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l_x1 = p_cp->tx0 + (p_cp->tw - 1U) *
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p_cp->tdx; /* validity of p_cp members used here checked in opj_j2k_read_siz. Can't overflow. */
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l_y1 = p_cp->ty0 + (p_cp->th - 1U) * p_cp->tdy; /* can't overflow */
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l_x1 = opj_uint_min(opj_uint_adds(l_x1, p_cp->tdx),
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p_image_header->x1); /* use add saturated to prevent overflow */
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l_y1 = opj_uint_min(opj_uint_adds(l_y1, p_cp->tdy),
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p_image_header->y1); /* use add saturated to prevent overflow */
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l_img_comp = p_image_header->comps;
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for (i = 0; i < p_image_header->numcomps; ++i) {
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l_comp_x0 = opj_uint_ceildiv(l_x0, l_img_comp->dx);
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l_comp_y0 = opj_uint_ceildiv(l_y0, l_img_comp->dy);
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l_comp_x1 = opj_uint_ceildiv(l_x1, l_img_comp->dx);
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l_comp_y1 = opj_uint_ceildiv(l_y1, l_img_comp->dy);
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l_width = opj_uint_ceildivpow2(l_comp_x1 - l_comp_x0, l_img_comp->factor);
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l_height = opj_uint_ceildivpow2(l_comp_y1 - l_comp_y0, l_img_comp->factor);
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l_img_comp->w = l_width;
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l_img_comp->h = l_height;
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l_img_comp->x0 = l_comp_x0;
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l_img_comp->y0 = l_comp_y0;
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++l_img_comp;
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}
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}
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/**
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* Copy only header of image and its component header (no data are copied)
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* if dest image have data, they will be freed
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*
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* @param p_image_src the src image
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* @param p_image_dest the dest image
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*
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*/
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void opj_copy_image_header(const opj_image_t* p_image_src,
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opj_image_t* p_image_dest)
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{
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OPJ_UINT32 compno;
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/* preconditions */
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assert(p_image_src != 00);
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assert(p_image_dest != 00);
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p_image_dest->x0 = p_image_src->x0;
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p_image_dest->y0 = p_image_src->y0;
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p_image_dest->x1 = p_image_src->x1;
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p_image_dest->y1 = p_image_src->y1;
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if (p_image_dest->comps) {
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for (compno = 0; compno < p_image_dest->numcomps; compno++) {
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opj_image_comp_t *image_comp = &(p_image_dest->comps[compno]);
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if (image_comp->data) {
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opj_image_data_free(image_comp->data);
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}
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}
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opj_free(p_image_dest->comps);
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p_image_dest->comps = NULL;
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}
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p_image_dest->numcomps = p_image_src->numcomps;
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p_image_dest->comps = (opj_image_comp_t*) opj_malloc(p_image_dest->numcomps *
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sizeof(opj_image_comp_t));
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if (!p_image_dest->comps) {
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p_image_dest->comps = NULL;
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p_image_dest->numcomps = 0;
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return;
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}
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for (compno = 0; compno < p_image_dest->numcomps; compno++) {
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memcpy(&(p_image_dest->comps[compno]),
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&(p_image_src->comps[compno]),
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sizeof(opj_image_comp_t));
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p_image_dest->comps[compno].data = NULL;
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}
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p_image_dest->color_space = p_image_src->color_space;
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p_image_dest->icc_profile_len = p_image_src->icc_profile_len;
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if (p_image_dest->icc_profile_len) {
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p_image_dest->icc_profile_buf = (OPJ_BYTE*)opj_malloc(
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p_image_dest->icc_profile_len);
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if (!p_image_dest->icc_profile_buf) {
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p_image_dest->icc_profile_buf = NULL;
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p_image_dest->icc_profile_len = 0;
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return;
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}
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memcpy(p_image_dest->icc_profile_buf,
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p_image_src->icc_profile_buf,
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p_image_src->icc_profile_len);
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} else {
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p_image_dest->icc_profile_buf = NULL;
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}
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return;
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}
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opj_image_t* OPJ_CALLCONV opj_image_tile_create(OPJ_UINT32 numcmpts,
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opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc)
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{
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OPJ_UINT32 compno;
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opj_image_t *image = 00;
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image = (opj_image_t*) opj_calloc(1, sizeof(opj_image_t));
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if (image) {
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image->color_space = clrspc;
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image->numcomps = numcmpts;
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/* allocate memory for the per-component information */
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image->comps = (opj_image_comp_t*)opj_calloc(image->numcomps,
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sizeof(opj_image_comp_t));
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if (!image->comps) {
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opj_image_destroy(image);
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return 00;
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}
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/* create the individual image components */
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for (compno = 0; compno < numcmpts; compno++) {
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opj_image_comp_t *comp = &image->comps[compno];
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comp->dx = cmptparms[compno].dx;
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comp->dy = cmptparms[compno].dy;
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comp->w = cmptparms[compno].w;
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comp->h = cmptparms[compno].h;
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comp->x0 = cmptparms[compno].x0;
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comp->y0 = cmptparms[compno].y0;
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comp->prec = cmptparms[compno].prec;
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comp->sgnd = cmptparms[compno].sgnd;
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comp->data = 0;
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}
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}
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return image;
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}
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