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
fill_random(uint8_t *tab, int size)30 static void fill_random(uint8_t *tab, int size)
31 {
32 int i;
33 for (i = 0; i < size; i++) {
34 tab[i] = rnd() % 256;
35 }
36 }
37
test_motion(const char *name, me_cmp_func test_func)38 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, d1, d2;
49 uint8_t *ptr;
50
51 LOCAL_ALIGNED_16(uint8_t, img1, [WIDTH * HEIGHT]);
52 LOCAL_ALIGNED_16(uint8_t, img2, [WIDTH * HEIGHT]);
53
54 declare_func_emms(AV_CPU_FLAG_MMX, int, struct MpegEncContext *c,
55 uint8_t *blk1 /* align width (8 or 16) */,
56 uint8_t *blk2 /* align 1 */, ptrdiff_t stride,
57 int h);
58
59 if (test_func == NULL) {
60 return;
61 }
62
63 /* test correctness */
64 fill_random(img1, WIDTH * HEIGHT);
65 fill_random(img2, WIDTH * HEIGHT);
66
67 if (check_func(test_func, "%s", name)) {
68 for (i = 0; i < ITERATIONS; i++) {
69 x = rnd() % (WIDTH - look_ahead);
70 y = rnd() % (HEIGHT - look_ahead);
71
72 ptr = img2 + y * WIDTH + x;
73 d2 = call_ref(NULL, img1, ptr, WIDTH, 8);
74 d1 = call_new(NULL, img1, ptr, WIDTH, 8);
75
76 if (d1 != d2) {
77 fail();
78 printf("func: %s, x=%d y=%d, error: asm=%d c=%d\n", name, x, y, d1, d2);
79 break;
80 }
81 }
82 // benchmark with the final value of ptr
83 bench_new(NULL, img1, ptr, WIDTH, 8);
84 }
85 }
86
87 #define ME_CMP_1D_ARRAYS(XX) \
88 XX(sad) \
89 XX(sse) \
90 XX(hadamard8_diff) \
91 XX(vsad) \
92 XX(vsse) \
93 XX(nsse) \
94 XX(me_pre_cmp) \
95 XX(me_cmp) \
96 XX(me_sub_cmp) \
97 XX(mb_cmp) \
98 XX(ildct_cmp) \
99 XX(frame_skip_cmp) \
100 XX(median_sad)
101
102 // tests for functions not yet implemented
103 #if 0
104 XX(dct_sad) \
105 XX(quant_psnr) \
106 XX(bit) \
107 XX(rd) \
108 XX(w53) \
109 XX(w97) \
110 XX(dct_max) \
111 XX(dct264_sad) \
112
113 #endif
114
check_motion(void)115 static void check_motion(void)
116 {
117 char buf[64];
118 AVCodecContext *av_ctx;
119 MECmpContext me_ctx;
120
121 memset(&me_ctx, 0, sizeof(me_ctx));
122
123 /* allocate AVCodecContext */
124 av_ctx = avcodec_alloc_context3(NULL);
125 av_ctx->flags |= AV_CODEC_FLAG_BITEXACT;
126
127 ff_me_cmp_init(&me_ctx, av_ctx);
128
129 for (int i = 0; i < FF_ARRAY_ELEMS(me_ctx.pix_abs); i++) {
130 for (int j = 0; j < FF_ARRAY_ELEMS(me_ctx.pix_abs[0]); j++) {
131 snprintf(buf, sizeof(buf), "pix_abs_%d_%d", i, j);
132 test_motion(buf, me_ctx.pix_abs[i][j]);
133 }
134 }
135
136 #define XX(me_cmp_array) \
137 for (int i = 0; i < FF_ARRAY_ELEMS(me_ctx.me_cmp_array); i++) { \
138 snprintf(buf, sizeof(buf), #me_cmp_array "_%d", i); \
139 test_motion(buf, me_ctx.me_cmp_array[i]); \
140 }
141 ME_CMP_1D_ARRAYS(XX)
142 #undef XX
143
144 avcodec_free_context(&av_ctx);
145 }
146
checkasm_check_motion(void)147 void checkasm_check_motion(void)
148 {
149 check_motion();
150 report("motion");
151 }
152