FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/tests/checkasm/pixelutils.c
Date: 2026-04-22 18:56:46
Exec Total Coverage
Lines: 36 37 97.3%
Functions: 2 2 100.0%
Branches: 26 34 76.5%
Line Branch Exec Source
1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17 */
18
19 #include <stddef.h>
20 #include <stdint.h>
21
22 #include "checkasm.h"
23
24 #include "libavutil/intreadwrite.h"
25 #include "libavutil/mem_internal.h"
26 #include "libavutil/pixelutils.h"
27
28 enum {
29 LOG2_MIN_DIMENSION = 1,
30 LOG2_MAX_DIMENSION = 5,
31 BUF_SIZE = 4096, ///< arbitrary
32 };
33
34 #define randomize_buffer(buf) \
35 do { \
36 for (size_t k = 0; k < sizeof(buf); k += 4) { \
37 uint32_t r = rnd(); \
38 AV_WN32A(buf + k, r); \
39 } \
40 } while (0)
41
42 14 static void checkasm_check_sad(void)
43 {
44 DECLARE_ALIGNED(32, uint8_t, buf1)[BUF_SIZE];
45 DECLARE_ALIGNED(32, uint8_t, buf2)[BUF_SIZE];
46 14 int inited = 0;
47
48 14 declare_func(int, const uint8_t *src1, ptrdiff_t stride1,
49 const uint8_t *src2, ptrdiff_t stride2);
50
51
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 84 for (int i = LOG2_MIN_DIMENSION; i <= LOG2_MAX_DIMENSION; ++i) {
52 70 const size_t width = 1 << i, height = 1 << i;
53
54
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 280 for (int aligned = 0; aligned <= 2; ++aligned) {
55 210 av_pixelutils_sad_fn fn = av_pixelutils_get_sad_fn(i, i, aligned, NULL);
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 210 if (check_func(fn, "sad_%zux%zu_%d", width, width, aligned)) {
57
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 27 const uint8_t *src1 = buf1 + ((aligned != 0) ? 0 : rnd() % width);
58
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 27 const uint8_t *src2 = buf2 + ((aligned == 2) ? 0 : rnd() % width);
59 // stride * (height - 1) needs to be so small that the alignment offset
60 // and the last line fit into the remaining buffer.
61 27 size_t max_stride = (BUF_SIZE - 2 * width) / (height - 1);
62 27 ptrdiff_t stride1 = 1 + rnd() % max_stride;
63 27 ptrdiff_t stride2 = 1 + rnd() % max_stride;
64
65
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 27 if (aligned != 0)
66 18 stride1 &= ~(width - 1);
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 27 if (aligned == 2)
68 9 stride2 &= ~(width - 1);
69
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 27 if (rnd() & 1) { // negate stride
71 14 src1 += (height - 1) * stride1;
72 14 stride1 = -stride1;
73 }
74
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 27 if (rnd() & 1) { // negate stride
75 11 src2 += (height - 1) * stride2;
76 11 stride2 = -stride2;
77 }
78
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 27 if (!inited) {
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 3075 randomize_buffer(buf1);
81
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 3075 randomize_buffer(buf2);
82 3 inited = 1;
83 }
84 27 int res_ref = call_ref(src1, stride1, src2, stride2);
85 27 int ref_new = call_new(src1, stride1, src2, stride2);
86
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 27 if (res_ref != ref_new)
87 ✗ fail();
88
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 27 bench_new(src1, stride1, src2, stride2);
90 }
91 }
92 }
93 14 }
94
95 14 void checkasm_check_pixelutils(void)
96 {
97 14 checkasm_check_sad();
98 14 report("sad");
99 14 }
100