/*

 * The copyright in this software is being made available under the 2-clauses

 * BSD License, included below. This software may be subject to other third

 * party and contributor rights, including patent rights, and no such rights

 * are granted under this license.

 *

 * Copyright (c) 2005, Herve Drolon, FreeImage Team

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS `AS IS'

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE

 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#include "opj_includes.h"

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_CALLCONV opj_image_create(OPJ_UINT32 numcmpts,

        opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc)

{

    OPJ_UINT32 compno;

    opj_image_t *image = 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_calloc(image->numcomps,

                       sizeof(opj_image_comp_t));

        if (!image->comps) {

            /* TODO replace with event manager, breaks API */

            /* 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->sgnd = cmptparms[compno].sgnd;

            if (comp->h != 0 &&

                    (OPJ_SIZE_T)comp->w > SIZE_MAX / comp->h / sizeof(OPJ_INT32)) {

                /* TODO event manager */

                opj_image_destroy(image);

                return NULL;

            }

            comp->data = (OPJ_INT32*) opj_image_data_alloc(

                             (size_t)comp->w * comp->h * sizeof(OPJ_INT32));

            if (!comp->data) {

                /* TODO replace with event manager, breaks API */

                /* fprintf(stderr,"Unable to allocate memory for image.\n"); */

                opj_image_destroy(image);

                return NULL;

            }

            memset(comp->data, 0, (size_t)comp->w * comp->h * sizeof(OPJ_INT32));

        }

    }

    return 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_image_data_free(image_comp->data);

                }

            }

            opj_free(image->comps);

        }

        if (image->icc_profile_buf) {

            opj_free(image->icc_profile_buf);

        }

        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 * p_cp)

{

    OPJ_UINT32 i, l_width, l_height;

    OPJ_UINT32 l_x0, l_y0, l_x1, l_y1;

    OPJ_UINT32 l_comp_x0, l_comp_y0, l_comp_x1, l_comp_y1;

    opj_image_comp_t* l_img_comp = NULL;

    l_x0 = opj_uint_max(p_cp->tx0, p_image_header->x0);

    l_y0 = opj_uint_max(p_cp->ty0, p_image_header->y0);

    l_x1 = p_cp->tx0 + (p_cp->tw - 1U) *

           p_cp->tdx; /* validity of p_cp members used here checked in opj_j2k_read_siz. Can't overflow. */

    l_y1 = p_cp->ty0 + (p_cp->th - 1U) * p_cp->tdy; /* can't overflow */

    l_x1 = opj_uint_min(opj_uint_adds(l_x1, p_cp->tdx),

                        p_image_header->x1); /* use add saturated to prevent overflow */

    l_y1 = opj_uint_min(opj_uint_adds(l_y1, p_cp->tdy),

                        p_image_header->y1); /* use add saturated to prevent overflow */

    l_img_comp = p_image_header->comps;

    for (i = 0; i < p_image_header->numcomps; ++i) {

        l_comp_x0 = opj_uint_ceildiv(l_x0, l_img_comp->dx);

        l_comp_y0 = opj_uint_ceildiv(l_y0, l_img_comp->dy);

        l_comp_x1 = opj_uint_ceildiv(l_x1, l_img_comp->dx);

        l_comp_y1 = opj_uint_ceildiv(l_y1, l_img_comp->dy);

        l_width   = opj_uint_ceildivpow2(l_comp_x1 - l_comp_x0, l_img_comp->factor);

        l_height  = opj_uint_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_img_comp->y0 = l_comp_y0;

        ++l_img_comp;

    }

}

/**

 * Copy only header of image and its component header (no data are copied)

 * if dest image have data, they will be freed

 *

 * @param   p_image_src     the src image

 * @param   p_image_dest    the dest image

 *

 */

void opj_copy_image_header(const opj_image_t* p_image_src,

                           opj_image_t* p_image_dest)

{

    OPJ_UINT32 compno;

    /* preconditions */

    assert(p_image_src != 00);

    assert(p_image_dest != 00);

    p_image_dest->x0 = p_image_src->x0;

    p_image_dest->y0 = p_image_src->y0;

    p_image_dest->x1 = p_image_src->x1;

    p_image_dest->y1 = p_image_src->y1;

    if (p_image_dest->comps) {

        for (compno = 0; compno < p_image_dest->numcomps; compno++) {

            opj_image_comp_t *image_comp = &(p_image_dest->comps[compno]);

            if (image_comp->data) {

                opj_image_data_free(image_comp->data);

            }

        }

        opj_free(p_image_dest->comps);

        p_image_dest->comps = NULL;

    }

    p_image_dest->numcomps = p_image_src->numcomps;

    p_image_dest->comps = (opj_image_comp_t*) opj_malloc(p_image_dest->numcomps *

                          sizeof(opj_image_comp_t));

    if (!p_image_dest->comps) {

        p_image_dest->comps = NULL;

        p_image_dest->numcomps = 0;

        return;

    }

    for (compno = 0; compno < p_image_dest->numcomps; compno++) {

        memcpy(&(p_image_dest->comps[compno]),

               &(p_image_src->comps[compno]),

               sizeof(opj_image_comp_t));

        p_image_dest->comps[compno].data = NULL;

    }

    p_image_dest->color_space = p_image_src->color_space;

    p_image_dest->icc_profile_len = p_image_src->icc_profile_len;

    if (p_image_dest->icc_profile_len) {

        p_image_dest->icc_profile_buf = (OPJ_BYTE*)opj_malloc(

                                            p_image_dest->icc_profile_len);

        if (!p_image_dest->icc_profile_buf) {

            p_image_dest->icc_profile_buf = NULL;

            p_image_dest->icc_profile_len = 0;

            return;

        }

        memcpy(p_image_dest->icc_profile_buf,

               p_image_src->icc_profile_buf,

               p_image_src->icc_profile_len);

    } else {

        p_image_dest->icc_profile_buf = NULL;

    }

    return;

}

opj_image_t* OPJ_CALLCONV opj_image_tile_create(OPJ_UINT32 numcmpts,

        opj_image_cmptparm_t *cmptparms, OPJ_COLOR_SPACE clrspc)

{

    OPJ_UINT32 compno;

    opj_image_t *image = 00;

    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_calloc(image->numcomps,

                       sizeof(opj_image_comp_t));

        if (!image->comps) {

            opj_image_destroy(image);

            return 00;

        }

        /* 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->sgnd = cmptparms[compno].sgnd;

            comp->data = 0;

        }

    }

    return image;

}