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[trunk] WIP: manage output image with area correponding to the set decoded area

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This commit is contained in:
Mickael Savinaud
2011-10-21 16:38:08 +00:00
parent 028088f5f0
commit 2808de6084
11 changed files with 501 additions and 210 deletions
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69
libopenjpeg/image.c
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@@ -126,3 +126,72 @@ void opj_image_comp_header_update(opj_image_t * p_image_header, const struct opj
++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_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;
}