1 #include <stdlib.h>
2 #include "utils.h"
3
4 #define WIDTH 32
5 #define HEIGHT 32
6
7 static 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
19 static 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
33 static 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
54 static void
on_destroy(pixman_image_t * image,void * data)55 on_destroy (pixman_image_t *image, void *data)
56 {
57 free (data);
58 }
59
60 static pixman_image_t *
make_image(void)61 make_image (void)
62 {
63 pixman_format_code_t format = RANDOM_FORMAT();
64 uint32_t *bytes, *orig;
65 pixman_image_t *image;
66 int stride;
67
68 orig = bytes = malloc (WIDTH * HEIGHT * 4);
69 prng_randmemset (bytes, WIDTH * HEIGHT * 4, 0);
70
71 stride = WIDTH * 4;
72 if (prng_rand_n (2) == 0)
73 {
74 bytes += (stride / 4) * (HEIGHT - 1);
75 stride = - stride;
76 }
77
78 image = pixman_image_create_bits (
79 format, WIDTH, HEIGHT, bytes, stride);
80
81 pixman_image_set_transform (image, RANDOM_TRANSFORM());
82 pixman_image_set_destroy_function (image, on_destroy, orig);
83 pixman_image_set_repeat (image, PIXMAN_REPEAT_NORMAL);
84
85 image_endian_swap (image);
86
87 return image;
88 }
89
90 static uint32_t
test_transform(int testnum,int verbose)91 test_transform (int testnum, int verbose)
92 {
93 pixman_image_t *src, *dest;
94 uint32_t crc;
95
96 prng_srand (testnum);
97
98 src = make_image ();
99 dest = make_image ();
100
101 pixman_image_composite (RANDOM_OP(),
102 src, NULL, dest,
103 0, 0, 0, 0, WIDTH / 2, HEIGHT / 2,
104 WIDTH, HEIGHT);
105
106 crc = compute_crc32_for_image (0, dest);
107
108 pixman_image_unref (src);
109 pixman_image_unref (dest);
110
111 return crc;
112 }
113
114 int
main(int argc,const char * argv[])115 main (int argc, const char *argv[])
116 {
117 return fuzzer_test_main ("rotate", 15000,
118 0x81E9EC2F,
119 test_transform, argc, argv);
120 }
121