1 #include <assert.h>
2 #include <stdlib.h>
3 #include <stdio.h>
4 #include <string.h>
5 #include "utils.h"
6
7 /*
8 * We have a source image filled with solid color, set NORMAL or PAD repeat,
9 * and some transform which results in nearest neighbour scaling.
10 *
11 * The expected result is either that the destination image filled with this solid
12 * color or, if the transformation is such that we can't composite anything at
13 * all, that nothing has changed in the destination.
14 *
15 * The surrounding memory of the source image is a different solid color so that
16 * we are sure to get failures if we access it.
17 */
18 static int
run_test(int32_t dst_width,int32_t dst_height,int32_t src_width,int32_t src_height,int32_t src_x,int32_t src_y,int32_t scale_x,int32_t scale_y,pixman_filter_t filter,pixman_repeat_t repeat)19 run_test (int32_t dst_width,
20 int32_t dst_height,
21 int32_t src_width,
22 int32_t src_height,
23 int32_t src_x,
24 int32_t src_y,
25 int32_t scale_x,
26 int32_t scale_y,
27 pixman_filter_t filter,
28 pixman_repeat_t repeat)
29 {
30 pixman_image_t * src_img;
31 pixman_image_t * dst_img;
32 pixman_transform_t transform;
33 uint32_t * srcbuf;
34 uint32_t * dstbuf;
35 pixman_color_t color_cc = { 0xcccc, 0xcccc, 0xcccc, 0xcccc };
36 pixman_image_t * solid;
37 int result;
38 int i;
39
40 static const pixman_fixed_t kernel[] =
41 {
42 #define D(f) (pixman_double_to_fixed (f) + 0x0001)
43
44 pixman_int_to_fixed (5),
45 pixman_int_to_fixed (5),
46 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
47 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
48 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
49 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0),
50 D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0), D(1/25.0)
51 };
52
53 result = 0;
54
55 srcbuf = (uint32_t *)malloc ((src_width + 10) * (src_height + 10) * 4);
56 dstbuf = (uint32_t *)malloc (dst_width * dst_height * 4);
57
58 memset (srcbuf, 0x88, src_width * src_height * 4);
59 memset (dstbuf, 0x33, dst_width * dst_height * 4);
60
61 src_img = pixman_image_create_bits (
62 PIXMAN_a8r8g8b8, src_width, src_height,
63 srcbuf + (src_width + 10) * 5 + 5, (src_width + 10) * 4);
64
65 solid = pixman_image_create_solid_fill (&color_cc);
66 pixman_image_composite32 (PIXMAN_OP_SRC, solid, NULL, src_img,
67 0, 0, 0, 0, 0, 0, src_width, src_height);
68 pixman_image_unref (solid);
69
70 dst_img = pixman_image_create_bits (
71 PIXMAN_a8r8g8b8, dst_width, dst_height, dstbuf, dst_width * 4);
72
73 pixman_transform_init_scale (&transform, scale_x, scale_y);
74 pixman_image_set_transform (src_img, &transform);
75 pixman_image_set_repeat (src_img, repeat);
76 if (filter == PIXMAN_FILTER_CONVOLUTION)
77 pixman_image_set_filter (src_img, filter, kernel, 27);
78 else
79 pixman_image_set_filter (src_img, filter, NULL, 0);
80
81 pixman_image_composite (PIXMAN_OP_SRC, src_img, NULL, dst_img,
82 src_x, src_y, 0, 0, 0, 0, dst_width, dst_height);
83
84 pixman_image_unref (src_img);
85 pixman_image_unref (dst_img);
86
87 for (i = 0; i < dst_width * dst_height; i++)
88 {
89 if (dstbuf[i] != 0xCCCCCCCC && dstbuf[i] != 0x33333333)
90 {
91 result = 1;
92 break;
93 }
94 }
95
96 free (srcbuf);
97 free (dstbuf);
98 return result;
99 }
100
101 typedef struct filter_info_t filter_info_t;
102 struct filter_info_t
103 {
104 pixman_filter_t value;
105 char name[28];
106 };
107
108 static const filter_info_t filters[] =
109 {
110 { PIXMAN_FILTER_NEAREST, "NEAREST" },
111 { PIXMAN_FILTER_BILINEAR, "BILINEAR" },
112 { PIXMAN_FILTER_CONVOLUTION, "CONVOLUTION" },
113 };
114
115 typedef struct repeat_info_t repeat_info_t;
116 struct repeat_info_t
117 {
118 pixman_repeat_t value;
119 char name[28];
120 };
121
122
123 static const repeat_info_t repeats[] =
124 {
125 { PIXMAN_REPEAT_PAD, "PAD" },
126 { PIXMAN_REPEAT_REFLECT, "REFLECT" },
127 { PIXMAN_REPEAT_NORMAL, "NORMAL" }
128 };
129
130 static int
do_test(int32_t dst_size,int32_t src_size,int32_t src_offs,int32_t scale_factor)131 do_test (int32_t dst_size,
132 int32_t src_size,
133 int32_t src_offs,
134 int32_t scale_factor)
135 {
136 int i, j;
137
138 for (i = 0; i < ARRAY_LENGTH (filters); ++i)
139 {
140 for (j = 0; j < ARRAY_LENGTH (repeats); ++j)
141 {
142 /* horizontal test */
143 if (run_test (dst_size, 1,
144 src_size, 1,
145 src_offs, 0,
146 scale_factor, 65536,
147 filters[i].value,
148 repeats[j].value) != 0)
149 {
150 printf ("Vertical test failed with %s filter and repeat mode %s\n",
151 filters[i].name, repeats[j].name);
152
153 return 1;
154 }
155
156 /* vertical test */
157 if (run_test (1, dst_size,
158 1, src_size,
159 0, src_offs,
160 65536, scale_factor,
161 filters[i].value,
162 repeats[j].value) != 0)
163 {
164 printf ("Vertical test failed with %s filter and repeat mode %s\n",
165 filters[i].name, repeats[j].name);
166
167 return 1;
168 }
169 }
170 }
171
172 return 0;
173 }
174
175 int
main(int argc,char * argv[])176 main (int argc, char *argv[])
177 {
178 int i;
179
180 pixman_disable_out_of_bounds_workaround ();
181
182 /* can potentially crash */
183 assert (do_test (
184 48000, 32767, 1, 65536 * 128) == 0);
185
186 /* can potentially get into a deadloop */
187 assert (do_test (
188 16384, 65536, 32, 32768) == 0);
189
190 /* can potentially access memory outside source image buffer */
191 assert (do_test (
192 10, 10, 0, 1) == 0);
193 assert (do_test (
194 10, 10, 0, 0) == 0);
195
196 for (i = 0; i < 100; ++i)
197 {
198 pixman_fixed_t one_seventh =
199 (((pixman_fixed_48_16_t)pixman_fixed_1) << 16) / (7 << 16);
200
201 assert (do_test (
202 1, 7, 3, one_seventh + i - 50) == 0);
203 }
204
205 for (i = 0; i < 100; ++i)
206 {
207 pixman_fixed_t scale =
208 (((pixman_fixed_48_16_t)pixman_fixed_1) << 16) / (32767 << 16);
209
210 assert (do_test (
211 1, 32767, 16383, scale + i - 50) == 0);
212 }
213
214 /* can potentially provide invalid results (out of range matrix stuff) */
215 assert (do_test (
216 48000, 32767, 16384, 65536 * 128) == 0);
217
218 return 0;
219 }
220