FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/tests/checkasm/motion.c
Date: 2026-04-22 18:56:46
Exec Total Coverage
Lines: 36 39 92.3%
Functions: 4 4 100.0%
Branches: 30 38 78.9%
Line Branch Exec Source
1 /*
2 *
3 * This file is part of FFmpeg.
4 *
5 * FFmpeg is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * FFmpeg is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with FFmpeg; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18 */
19
20 #include <string.h>
21
22 #include "libavutil/common.h"
23 #include "libavutil/intreadwrite.h"
24 #include "libavutil/mem_internal.h"
25
26 #include "libavcodec/me_cmp.h"
27
28 #include "checkasm.h"
29
30 812 static void fill_random(uint8_t *tab, int size)
31 {
32 int i;
33
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 3326764 for (i = 0; i < size; i++) {
34 3325952 tab[i] = rnd() % 256;
35 }
36 812 }
37
38 700 static void test_motion(const char *name, me_cmp_func test_func)
39 {
40 /* test configurarion */
41 #define ITERATIONS 16
42 #define WIDTH 64
43 #define HEIGHT 64
44
45 /* motion estimation can look up to 17 bytes ahead */
46 static const int look_ahead = 17;
47
48 int i, x, y, h, d1, d2;
49 uint8_t *ptr;
50
51 700 LOCAL_ALIGNED_16(uint8_t, img1, [WIDTH * HEIGHT]);
52 700 LOCAL_ALIGNED_16(uint8_t, img2, [WIDTH * HEIGHT]);
53
54
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 700 declare_func_emms(AV_CPU_FLAG_MMX, int, MPVEncContext *c,
55 const uint8_t *blk1 /* align width (8 or 16) */,
56 const uint8_t *blk2 /* align 1 */, ptrdiff_t stride,
57 int h);
58
59
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 700 if (test_func == NULL) {
60 294 return;
61 }
62
63 /* test correctness */
64 406 fill_random(img1, WIDTH * HEIGHT);
65 406 fill_random(img2, WIDTH * HEIGHT);
66
67
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 406 if (check_func(test_func, "%s", name)) {
68
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 833 for (i = 0; i < ITERATIONS; i++) {
69 784 x = rnd() % (WIDTH - look_ahead);
70 784 y = rnd() % (HEIGHT - look_ahead);
71 // Pick a random h between 4 and 16; pick an even value.
72 784 h = 4 + ((rnd() % (16 + 1 - 4)) & ~1);
73
74 784 ptr = img2 + y * WIDTH + x;
75 784 d2 = call_ref(NULL, img1, ptr, WIDTH, h);
76 784 d1 = call_new(NULL, img1, ptr, WIDTH, h);
77
78
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 784 if (d1 != d2) {
79 ✗ fail();
80 ✗ printf("func: %s, x=%d y=%d h=%d, error: asm=%d c=%d\n", name, x, y, h, d1, d2);
81 ✗ break;
82 }
83 }
84 // Test with a fixed offset, for benchmark stability
85 49 ptr = img2 + 3 * WIDTH + 3;
86
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 49 bench_new(NULL, img1, ptr, WIDTH, 8);
87 }
88 }
89
90 #define ME_CMP_1D_ARRAYS(XX) \
91 XX(sad) \
92 XX(sse) \
93 XX(hadamard8_diff) \
94 XX(vsad) \
95 XX(vsse) \
96 XX(nsse) \
97 XX(median_sad)
98
99 // tests for functions not yet implemented
100 #if 0
101 XX(dct_sad) \
102 XX(quant_psnr) \
103 XX(bit) \
104 XX(rd) \
105 XX(w53) \
106 XX(w97) \
107 XX(dct_max) \
108 XX(dct264_sad) \
109
110 #endif
111
112 14 static void check_motion(void)
113 {
114 char buf[64];
115 /* Setup AVCodecContext in a way that does not pull in all of libavcodec */
116 14 AVCodecContext av_ctx = { .codec_id = AV_CODEC_ID_NONE, .flags = AV_CODEC_FLAG_BITEXACT };
117 MECmpContext me_ctx;
118
119 14 ff_me_cmp_init(&me_ctx, &av_ctx);
120
121
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 42 for (int i = 0; i < FF_ARRAY_ELEMS(me_ctx.pix_abs); i++) {
122
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 140 for (int j = 0; j < FF_ARRAY_ELEMS(me_ctx.pix_abs[0]); j++) {
123 112 snprintf(buf, sizeof(buf), "pix_abs_%d_%d", i, j);
124 112 test_motion(buf, me_ctx.pix_abs[i][j]);
125 }
126 }
127
128 #define XX(me_cmp_array) \
129 for (int i = 0; i < FF_ARRAY_ELEMS(me_ctx.me_cmp_array); i++) { \
130 snprintf(buf, sizeof(buf), #me_cmp_array "_%d", i); \
131 test_motion(buf, me_ctx.me_cmp_array[i]); \
132 }
133
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 602 ME_CMP_1D_ARRAYS(XX)
134 #undef XX
135 14 }
136
137 14 void checkasm_check_motion(void)
138 {
139 14 check_motion();
140 14 report("motion");
141 14 }
142