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[image] Add function to get image memory size

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This commit is contained in:
Bill Currie 2021-04-25 08:38:13 +09:00
parent 785be9d340
commit 40aa629ef8
2 changed files with 30 additions and 0 deletions
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2
include/QF/image.h
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@ -53,6 +53,8 @@ typedef struct tex_s {
tex_t *LoadImage (const char *imageFile, int load);
size_t ImageSize (const tex_t *tex, int incl_struct) __attribute__((pure));
typedef struct colcache_s colcache_t;
colcache_t *ColorCache_New (void);

28
libs/image/image.c
View file

@ -106,3 +106,31 @@ LoadImage (const char *imageFile, int load)
dstring_delete (tmpFile);
return (tex);
}
size_t
ImageSize (const tex_t *tex, int incl_struct)
{
size_t w =tex->width;
size_t h =tex->height;
size_t bpp = 1;
switch (tex->format) {
case tex_palette:
case tex_rgb:
bpp = 3;
break;
case tex_l:
case tex_a:
bpp = 1;
break;
case tex_la:
bpp = 2;
break;
case tex_rgba:
bpp = 4;
break;
case tex_frgba:
bpp = 16;
break;
}
return bpp * w * h + (incl_struct ? sizeof (tex_t) : 0);
}