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#include <stdlib.h>
#include <stdio.h>
#include "utils.h"
static void
make_random_region (pixman_region32_t *region)
{
int n_boxes;
pixman_region32_init (region);
n_boxes = lcg_rand_n (64);
while (n_boxes--)
{
int32_t x, y;
uint32_t w, h;
x = (int32_t)lcg_rand_u32() >> 2;
y = (int32_t)lcg_rand_u32() >> 2;
w = lcg_rand_u32() >> 2;
h = lcg_rand_u32() >> 2;
pixman_region32_union_rect (region, region, x, y, w, h);
}
}
static void
print_box (pixman_box32_t *box)
{
printf (" %d %d %d %d\n", box->x1, box->y1, box->x2, box->y2);
}
static int32_t
random_coord (pixman_region32_t *region, pixman_bool_t x)
{
pixman_box32_t *b, *bb;
int n_boxes;
int begin, end;
if (lcg_rand_n (14))
{
bb = pixman_region32_rectangles (region, &n_boxes);
if (n_boxes == 0)
goto use_extent;
b = bb + lcg_rand_n (n_boxes);
}
else
{
use_extent:
b = pixman_region32_extents (region);
n_boxes = 1;
}
if (x)
{
begin = b->x1;
end = b->x2;
}
else
{
begin = b->y1;
end = b->y2;
}
switch (lcg_rand_n (5))
{
case 0:
return begin - lcg_rand_u32();
case 1:
return end + lcg_rand_u32 ();
case 2:
return end;
case 3:
return begin;
default:
return (end - begin) / 2 + begin;
}
return 0;
}
static uint32_t
compute_crc32_u32 (uint32_t crc32, uint32_t v)
{
if (!is_little_endian())
{
v = ((v & 0xff000000) >> 24) |
((v & 0x00ff0000) >> 8) |
((v & 0x0000ff00) << 8) |
((v & 0x000000ff) << 24);
}
return compute_crc32 (crc32, &v, sizeof (int32_t));
}
static uint32_t
crc32_box32 (uint32_t crc32, pixman_box32_t *box)
{
crc32 = compute_crc32_u32 (crc32, box->x1);
crc32 = compute_crc32_u32 (crc32, box->y1);
crc32 = compute_crc32_u32 (crc32, box->x2);
crc32 = compute_crc32_u32 (crc32, box->y2);
return crc32;
}
static uint32_t
test_region_contains_rectangle (int i, int verbose)
{
pixman_box32_t box;
pixman_box32_t rbox = { 0, 0, 0, 0 };
pixman_region32_t region;
uint32_t r, r1, r2, r3, r4, crc32;
lcg_srand (i);
make_random_region (®ion);
box.x1 = random_coord (®ion, TRUE);
box.x2 = box.x1 + lcg_rand_u32 ();
box.y1 = random_coord (®ion, FALSE);
box.y2 = box.y1 + lcg_rand_u32 ();
if (verbose)
{
int n_rects;
pixman_box32_t *boxes;
boxes = pixman_region32_rectangles (®ion, &n_rects);
printf ("region:\n");
while (n_rects--)
print_box (boxes++);
printf ("box:\n");
print_box (&box);
}
crc32 = 0;
r1 = pixman_region32_contains_point (®ion, box.x1, box.y1, &rbox);
crc32 = crc32_box32 (crc32, &rbox);
r2 = pixman_region32_contains_point (®ion, box.x1, box.y2, &rbox);
crc32 = crc32_box32 (crc32, &rbox);
r3 = pixman_region32_contains_point (®ion, box.x2, box.y1, &rbox);
crc32 = crc32_box32 (crc32, &rbox);
r4 = pixman_region32_contains_point (®ion, box.x2, box.y2, &rbox);
crc32 = crc32_box32 (crc32, &rbox);
r = pixman_region32_contains_rectangle (®ion, &box);
r = (i << 8) | (r << 4) | (r1 << 3) | (r2 << 2) | (r3 << 1) | (r4 << 0);
crc32 = compute_crc32_u32 (crc32, r);
if (verbose)
printf ("results: %d %d %d %d %d\n", (r & 0xf0) >> 4, r1, r2, r3, r4);
pixman_region32_fini (®ion);
return crc32;
}
int
main (int argc, const char *argv[])
{
return fuzzer_test_main ("region_contains",
1000000,
0xD2BF8C73,
test_region_contains_rectangle,
argc, argv);
}
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