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#include <stdlib.h>
#include "utils.h"
#define WIDTH 32
#define HEIGHT 32
static const pixman_format_code_t formats[] =
{
PIXMAN_a8r8g8b8,
PIXMAN_a8b8g8r8,
PIXMAN_x8r8g8b8,
PIXMAN_x8b8g8r8,
PIXMAN_r5g6b5,
PIXMAN_b5g6r5,
PIXMAN_a8,
PIXMAN_a1,
};
static const pixman_op_t ops[] =
{
PIXMAN_OP_OVER,
PIXMAN_OP_SRC,
PIXMAN_OP_ADD,
};
#define TRANSFORM(v00, v01, v10, v11) \
{ { { v00, v01, WIDTH * pixman_fixed_1 / 2 }, \
{ v10, v11, HEIGHT * pixman_fixed_1 / 2 }, \
{ 0, 0, pixman_fixed_1 } } }
#define F1 pixman_fixed_1
static const pixman_transform_t transforms[] =
{
TRANSFORM (0, -1, 1, 0), /* wrong 90 degree rotation */
TRANSFORM (0, 1, -1, 0), /* wrong 270 degree rotation */
TRANSFORM (1, 0, 0, 1), /* wrong identity */
TRANSFORM (-1, 0, 0, -1), /* wrong 180 degree rotation */
TRANSFORM (0, -F1, F1, 0), /* correct 90 degree rotation */
TRANSFORM (0, F1, -F1, 0), /* correct 270 degree rotation */
TRANSFORM (F1, 0, 0, F1), /* correct identity */
TRANSFORM (-F1, 0, 0, -F1), /* correct 180 degree rotation */
};
#define RANDOM_FORMAT() \
(formats[prng_rand_n (ARRAY_LENGTH (formats))])
#define RANDOM_OP() \
(ops[prng_rand_n (ARRAY_LENGTH (ops))])
#define RANDOM_TRANSFORM() \
(&(transforms[prng_rand_n (ARRAY_LENGTH (transforms))]))
static void
on_destroy (pixman_image_t *image, void *data)
{
free (data);
}
static pixman_image_t *
make_image (void)
{
pixman_format_code_t format = RANDOM_FORMAT();
uint32_t *bytes, *orig;
pixman_image_t *image;
int stride;
orig = bytes = malloc (WIDTH * HEIGHT * 4);
prng_randmemset (bytes, WIDTH * HEIGHT * 4, 0);
stride = WIDTH * 4;
if (prng_rand_n (2) == 0)
{
bytes += (stride / 4) * (HEIGHT - 1);
stride = - stride;
}
image = pixman_image_create_bits (
format, WIDTH, HEIGHT, bytes, stride);
pixman_image_set_transform (image, RANDOM_TRANSFORM());
pixman_image_set_destroy_function (image, on_destroy, orig);
pixman_image_set_repeat (image, PIXMAN_REPEAT_NORMAL);
image_endian_swap (image);
return image;
}
static uint32_t
test_transform (int testnum, int verbose)
{
pixman_image_t *src, *dest;
uint32_t crc;
prng_srand (testnum);
src = make_image ();
dest = make_image ();
pixman_image_composite (RANDOM_OP(),
src, NULL, dest,
0, 0, 0, 0, WIDTH / 2, HEIGHT / 2,
WIDTH, HEIGHT);
crc = compute_crc32_for_image (0, dest);
pixman_image_unref (src);
pixman_image_unref (dest);
return crc;
}
int
main (int argc, const char *argv[])
{
return fuzzer_test_main ("rotate", 15000,
0x81E9EC2F,
test_transform, argc, argv);
}
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