rotate-test.c revision 1176bdada62cabc6ec4b0308a930e83b679d5d36 
1#include <stdlib.h>
2#include "utils.h"
3
4#define WIDTH	32
5#define HEIGHT	32
6
7static const pixman_format_code_t formats[] =
8{
9    PIXMAN_a8r8g8b8,
10    PIXMAN_a8b8g8r8,
11    PIXMAN_x8r8g8b8,
12    PIXMAN_x8b8g8r8,
13    PIXMAN_r5g6b5,
14    PIXMAN_b5g6r5,
15    PIXMAN_a8,
16    PIXMAN_a1,
17};
18
19static const pixman_op_t ops[] =
20{
21    PIXMAN_OP_OVER,
22    PIXMAN_OP_SRC,
23    PIXMAN_OP_ADD,
24};
25
26#define TRANSFORM(v00, v01, v10, v11)					\
27    { { { v00, v01, WIDTH * pixman_fixed_1 / 2 },			\
28        { v10, v11, HEIGHT * pixman_fixed_1 / 2 },			\
29	{ 0, 0, pixman_fixed_1 } } }
30
31#define F1 pixman_fixed_1
32
33static const pixman_transform_t transforms[] =
34{
35    TRANSFORM (0, -1, 1, 0),		/* wrong 90 degree rotation */
36    TRANSFORM (0, 1, -1, 0),		/* wrong 270 degree rotation */
37    TRANSFORM (1, 0, 0, 1),		/* wrong identity */
38    TRANSFORM (-1, 0, 0, -1),		/* wrong 180 degree rotation */
39    TRANSFORM (0, -F1, F1, 0),		/* correct 90 degree rotation */
40    TRANSFORM (0, F1, -F1, 0),		/* correct 270 degree rotation */
41    TRANSFORM (F1, 0, 0, F1),		/* correct identity */
42    TRANSFORM (-F1, 0, 0, -F1),		/* correct 180 degree rotation */
43};
44
45#define RANDOM_FORMAT()							\
46    (formats[prng_rand_n (ARRAY_LENGTH (formats))])
47
48#define RANDOM_OP()							\
49    (ops[prng_rand_n (ARRAY_LENGTH (ops))])
50
51#define RANDOM_TRANSFORM()						\
52    (&(transforms[prng_rand_n (ARRAY_LENGTH (transforms))]))
53
54static void
55on_destroy (pixman_image_t *image, void *data)
56{
57    free (data);
58}
59
60static pixman_image_t *
61make_image (void)
62{
63    pixman_format_code_t format = RANDOM_FORMAT();
64    uint32_t *bytes = malloc (WIDTH * HEIGHT * 4);
65    pixman_image_t *image;
66
67    prng_randmemset (bytes, WIDTH * HEIGHT * 4, 0);
68
69    image = pixman_image_create_bits (
70	format, WIDTH, HEIGHT, bytes, WIDTH * 4);
71
72    pixman_image_set_transform (image, RANDOM_TRANSFORM());
73    pixman_image_set_destroy_function (image, on_destroy, bytes);
74    pixman_image_set_repeat (image, PIXMAN_REPEAT_NORMAL);
75
76    image_endian_swap (image);
77
78    return image;
79}
80
81static uint32_t
82test_transform (int testnum, int verbose)
83{
84    pixman_image_t *src, *dest;
85    uint32_t crc;
86
87    prng_srand (testnum);
88
89    src = make_image ();
90    dest = make_image ();
91
92    pixman_image_composite (RANDOM_OP(),
93			    src, NULL, dest,
94			    0, 0, 0, 0, WIDTH / 2, HEIGHT / 2,
95			    WIDTH, HEIGHT);
96
97    crc = compute_crc32_for_image (0, dest);
98
99    pixman_image_unref (src);
100    pixman_image_unref (dest);
101
102    return crc;
103}
104
105int
106main (int argc, const char *argv[])
107{
108    return fuzzer_test_main ("rotate", 15000,
109			     0xECF5E426,
110			     test_transform, argc, argv);
111}
112