1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
|
/*
* Test program, which can detect some problems with affine transformations
* in pixman. Testing is done by running lots of random SRC and OVER
* compositing operations a8r8g8b8, x8a8r8g8b8, r5g6b5 and a8 color formats
* with random scaled, rotated and translated transforms.
*
* Script 'fuzzer-find-diff.pl' can be used to narrow down the problem in
* the case of test failure.
*/
#include <assert.h>
#include <stdlib.h>
#include <stdio.h>
#include "utils.h"
#define MAX_SRC_WIDTH 16
#define MAX_SRC_HEIGHT 16
#define MAX_DST_WIDTH 16
#define MAX_DST_HEIGHT 16
#define MAX_STRIDE 4
/*
* Composite operation with pseudorandom images
*/
uint32_t
test_composite (int testnum,
int verbose)
{
int i;
pixman_image_t * src_img;
pixman_image_t * dst_img;
pixman_transform_t transform;
pixman_region16_t clip;
int src_width, src_height;
int dst_width, dst_height;
int src_stride, dst_stride;
int src_x, src_y;
int dst_x, dst_y;
int src_bpp;
int dst_bpp;
int w, h;
pixman_fixed_t scale_x = 65536, scale_y = 65536;
pixman_fixed_t translate_x = 0, translate_y = 0;
pixman_op_t op;
pixman_repeat_t repeat = PIXMAN_REPEAT_NONE;
pixman_format_code_t src_fmt, dst_fmt;
uint32_t * srcbuf;
uint32_t * dstbuf;
uint32_t crc32;
FLOAT_REGS_CORRUPTION_DETECTOR_START ();
prng_srand (testnum);
src_bpp = (prng_rand_n (2) == 0) ? 2 : 4;
dst_bpp = (prng_rand_n (2) == 0) ? 2 : 4;
op = (prng_rand_n (2) == 0) ? PIXMAN_OP_SRC : PIXMAN_OP_OVER;
src_width = prng_rand_n (MAX_SRC_WIDTH) + 1;
src_height = prng_rand_n (MAX_SRC_HEIGHT) + 1;
dst_width = prng_rand_n (MAX_DST_WIDTH) + 1;
dst_height = prng_rand_n (MAX_DST_HEIGHT) + 1;
src_stride = src_width * src_bpp + prng_rand_n (MAX_STRIDE) * src_bpp;
dst_stride = dst_width * dst_bpp + prng_rand_n (MAX_STRIDE) * dst_bpp;
if (src_stride & 3)
src_stride += 2;
if (dst_stride & 3)
dst_stride += 2;
src_x = -(src_width / 4) + prng_rand_n (src_width * 3 / 2);
src_y = -(src_height / 4) + prng_rand_n (src_height * 3 / 2);
dst_x = -(dst_width / 4) + prng_rand_n (dst_width * 3 / 2);
dst_y = -(dst_height / 4) + prng_rand_n (dst_height * 3 / 2);
w = prng_rand_n (dst_width * 3 / 2 - dst_x);
h = prng_rand_n (dst_height * 3 / 2 - dst_y);
srcbuf = (uint32_t *)malloc (src_stride * src_height);
dstbuf = (uint32_t *)malloc (dst_stride * dst_height);
prng_randmemset (srcbuf, src_stride * src_height, 0);
prng_randmemset (dstbuf, dst_stride * dst_height, 0);
src_fmt = src_bpp == 4 ? (prng_rand_n (2) == 0 ?
PIXMAN_a8r8g8b8 : PIXMAN_x8r8g8b8) : PIXMAN_r5g6b5;
dst_fmt = dst_bpp == 4 ? (prng_rand_n (2) == 0 ?
PIXMAN_a8r8g8b8 : PIXMAN_x8r8g8b8) : PIXMAN_r5g6b5;
src_img = pixman_image_create_bits (
src_fmt, src_width, src_height, srcbuf, src_stride);
dst_img = pixman_image_create_bits (
dst_fmt, dst_width, dst_height, dstbuf, dst_stride);
image_endian_swap (src_img);
image_endian_swap (dst_img);
pixman_transform_init_identity (&transform);
if (prng_rand_n (3) > 0)
{
scale_x = -65536 * 3 + prng_rand_n (65536 * 6);
if (prng_rand_n (2))
scale_y = -65536 * 3 + prng_rand_n (65536 * 6);
else
scale_y = scale_x;
pixman_transform_init_scale (&transform, scale_x, scale_y);
}
if (prng_rand_n (3) > 0)
{
translate_x = -65536 * 3 + prng_rand_n (6 * 65536);
if (prng_rand_n (2))
translate_y = -65536 * 3 + prng_rand_n (6 * 65536);
else
translate_y = translate_x;
pixman_transform_translate (&transform, NULL, translate_x, translate_y);
}
if (prng_rand_n (4) > 0)
{
int c, s, tx = 0, ty = 0;
switch (prng_rand_n (4))
{
case 0:
/* 90 degrees */
c = 0;
s = pixman_fixed_1;
tx = pixman_int_to_fixed (MAX_SRC_HEIGHT);
break;
case 1:
/* 180 degrees */
c = -pixman_fixed_1;
s = 0;
tx = pixman_int_to_fixed (MAX_SRC_WIDTH);
ty = pixman_int_to_fixed (MAX_SRC_HEIGHT);
break;
case 2:
/* 270 degrees */
c = 0;
s = -pixman_fixed_1;
ty = pixman_int_to_fixed (MAX_SRC_WIDTH);
break;
default:
/* arbitrary rotation */
c = prng_rand_n (2 * 65536) - 65536;
s = prng_rand_n (2 * 65536) - 65536;
break;
}
pixman_transform_rotate (&transform, NULL, c, s);
pixman_transform_translate (&transform, NULL, tx, ty);
}
if (prng_rand_n (8) == 0)
{
/* Flip random bits */
int maxflipcount = 8;
while (maxflipcount--)
{
int i = prng_rand_n (2);
int j = prng_rand_n (3);
int bitnum = prng_rand_n (32);
transform.matrix[i][j] ^= 1 << bitnum;
if (prng_rand_n (2))
break;
}
}
pixman_image_set_transform (src_img, &transform);
switch (prng_rand_n (4))
{
case 0:
repeat = PIXMAN_REPEAT_NONE;
break;
case 1:
repeat = PIXMAN_REPEAT_NORMAL;
break;
case 2:
repeat = PIXMAN_REPEAT_PAD;
break;
case 3:
repeat = PIXMAN_REPEAT_REFLECT;
break;
default:
break;
}
pixman_image_set_repeat (src_img, repeat);
if (prng_rand_n (2))
pixman_image_set_filter (src_img, PIXMAN_FILTER_NEAREST, NULL, 0);
else
pixman_image_set_filter (src_img, PIXMAN_FILTER_BILINEAR, NULL, 0);
if (verbose)
{
#define M(r,c) \
transform.matrix[r][c]
printf ("src_fmt=%08X, dst_fmt=%08X\n", src_fmt, dst_fmt);
printf ("op=%d, repeat=%d, transform=\n",
op, repeat);
printf (" { { { 0x%08x, 0x%08x, 0x%08x },\n"
" { 0x%08x, 0x%08x, 0x%08x },\n"
" { 0x%08x, 0x%08x, 0x%08x },\n"
" } };\n",
M(0,0), M(0,1), M(0,2),
M(1,0), M(1,1), M(1,2),
M(2,0), M(2,1), M(2,2));
printf ("src_width=%d, src_height=%d, dst_width=%d, dst_height=%d\n",
src_width, src_height, dst_width, dst_height);
printf ("src_x=%d, src_y=%d, dst_x=%d, dst_y=%d\n",
src_x, src_y, dst_x, dst_y);
printf ("w=%d, h=%d\n", w, h);
}
if (prng_rand_n (8) == 0)
{
pixman_box16_t clip_boxes[2];
int n = prng_rand_n (2) + 1;
for (i = 0; i < n; i++)
{
clip_boxes[i].x1 = prng_rand_n (src_width);
clip_boxes[i].y1 = prng_rand_n (src_height);
clip_boxes[i].x2 =
clip_boxes[i].x1 + prng_rand_n (src_width - clip_boxes[i].x1);
clip_boxes[i].y2 =
clip_boxes[i].y1 + prng_rand_n (src_height - clip_boxes[i].y1);
if (verbose)
{
printf ("source clip box: [%d,%d-%d,%d]\n",
clip_boxes[i].x1, clip_boxes[i].y1,
clip_boxes[i].x2, clip_boxes[i].y2);
}
}
pixman_region_init_rects (&clip, clip_boxes, n);
pixman_image_set_clip_region (src_img, &clip);
pixman_image_set_source_clipping (src_img, 1);
pixman_region_fini (&clip);
}
if (prng_rand_n (8) == 0)
{
pixman_box16_t clip_boxes[2];
int n = prng_rand_n (2) + 1;
for (i = 0; i < n; i++)
{
clip_boxes[i].x1 = prng_rand_n (dst_width);
clip_boxes[i].y1 = prng_rand_n (dst_height);
clip_boxes[i].x2 =
clip_boxes[i].x1 + prng_rand_n (dst_width - clip_boxes[i].x1);
clip_boxes[i].y2 =
clip_boxes[i].y1 + prng_rand_n (dst_height - clip_boxes[i].y1);
if (verbose)
{
printf ("destination clip box: [%d,%d-%d,%d]\n",
clip_boxes[i].x1, clip_boxes[i].y1,
clip_boxes[i].x2, clip_boxes[i].y2);
}
}
pixman_region_init_rects (&clip, clip_boxes, n);
pixman_image_set_clip_region (dst_img, &clip);
pixman_region_fini (&clip);
}
pixman_image_composite (op, src_img, NULL, dst_img,
src_x, src_y, 0, 0, dst_x, dst_y, w, h);
if (dst_fmt == PIXMAN_x8r8g8b8)
{
/* ignore unused part */
for (i = 0; i < dst_stride * dst_height / 4; i++)
dstbuf[i] &= 0xFFFFFF;
}
image_endian_swap (dst_img);
if (verbose)
{
int j;
for (i = 0; i < dst_height; i++)
{
for (j = 0; j < dst_stride; j++)
printf ("%02X ", *((uint8_t *)dstbuf + i * dst_stride + j));
printf ("\n");
}
}
pixman_image_unref (src_img);
pixman_image_unref (dst_img);
crc32 = compute_crc32 (0, dstbuf, dst_stride * dst_height);
free (srcbuf);
free (dstbuf);
FLOAT_REGS_CORRUPTION_DETECTOR_FINISH ();
return crc32;
}
#if BILINEAR_INTERPOLATION_BITS == 8
#define CHECKSUM 0x2CDF1F07
#elif BILINEAR_INTERPOLATION_BITS == 7
#define CHECKSUM 0xBC00B1DF
#elif BILINEAR_INTERPOLATION_BITS == 4
#define CHECKSUM 0xA227306B
#else
#define CHECKSUM 0x00000000
#endif
int
main (int argc, const char *argv[])
{
pixman_disable_out_of_bounds_workaround ();
return fuzzer_test_main ("affine", 8000000, CHECKSUM,
test_composite, argc, argv);
}
|
