1 /*
2 * (c) 2001 Fabrice Bellard
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 /**
22 * @file
23 * motion test.
24 */
25
26 #include <stdlib.h>
27 #include <stdio.h>
28 #include <string.h>
29
30 #include "config.h"
31 #include "libavcodec/me_cmp.h"
32 #include "libavutil/cpu.h"
33 #include "libavutil/internal.h"
34 #include "libavutil/lfg.h"
35 #include "libavutil/mem.h"
36 #include "libavutil/time.h"
37
38 #undef printf
39
40 #define WIDTH 64
41 #define HEIGHT 64
42
43 static uint8_t img1[WIDTH * HEIGHT];
44 static uint8_t img2[WIDTH * HEIGHT];
45
fill_random(uint8_t *tab, int size)46 static void fill_random(uint8_t *tab, int size)
47 {
48 int i;
49 AVLFG prng;
50
51 av_lfg_init(&prng, 1);
52 for(i=0;i<size;i++) {
53 tab[i] = av_lfg_get(&prng) % 256;
54 }
55 }
56
help(void)57 static void help(void)
58 {
59 printf("motion-test [-h]\n"
60 "test motion implementations\n");
61 }
62
63 #define NB_ITS 500
64
65 int dummy;
66
test_motion(const char *name, me_cmp_func test_func, me_cmp_func ref_func)67 static void test_motion(const char *name,
68 me_cmp_func test_func, me_cmp_func ref_func)
69 {
70 int x, y, d1, d2, it;
71 uint8_t *ptr;
72 int64_t ti;
73 printf("testing '%s'\n", name);
74
75 /* test correctness */
76 for(it=0;it<20;it++) {
77
78 fill_random(img1, WIDTH * HEIGHT);
79 fill_random(img2, WIDTH * HEIGHT);
80
81 for(y=0;y<HEIGHT-17;y++) {
82 for(x=0;x<WIDTH-17;x++) {
83 ptr = img2 + y * WIDTH + x;
84 d1 = test_func(NULL, img1, ptr, WIDTH, 8);
85 d2 = ref_func(NULL, img1, ptr, WIDTH, 8);
86 if (d1 != d2) {
87 printf("error: mmx=%d c=%d\n", d1, d2);
88 }
89 }
90 }
91 }
92 emms_c();
93
94 /* speed test */
95 ti = av_gettime_relative();
96 d1 = 0;
97 for(it=0;it<NB_ITS;it++) {
98 for(y=0;y<HEIGHT-17;y++) {
99 for(x=0;x<WIDTH-17;x++) {
100 ptr = img2 + y * WIDTH + x;
101 d1 += test_func(NULL, img1, ptr, WIDTH, 8);
102 }
103 }
104 }
105 emms_c();
106 dummy = d1; /* avoid optimization */
107 ti = av_gettime_relative() - ti;
108
109 printf(" %0.0f kop/s\n",
110 (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
111 (double)(ti / 1000.0));
112 }
113
114
main(int argc, char **argv)115 int main(int argc, char **argv)
116 {
117 AVCodecContext *ctx;
118 int c;
119 MECmpContext cctx, mmxctx;
120 int flags[2] = { AV_CPU_FLAG_MMX, AV_CPU_FLAG_MMXEXT };
121 int flags_size = HAVE_MMXEXT ? 2 : 1;
122
123 if (argc > 1) {
124 help();
125 return 1;
126 }
127
128 printf("ffmpeg motion test\n");
129
130 ctx = avcodec_alloc_context3(NULL);
131 ctx->flags |= AV_CODEC_FLAG_BITEXACT;
132 av_force_cpu_flags(0);
133 memset(&cctx, 0, sizeof(cctx));
134 ff_me_cmp_init(&cctx, ctx);
135 for (c = 0; c < flags_size; c++) {
136 int x;
137 av_force_cpu_flags(flags[c]);
138 memset(&mmxctx, 0, sizeof(mmxctx));
139 ff_me_cmp_init(&mmxctx, ctx);
140
141 for (x = 0; x < 2; x++) {
142 printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx",
143 x ? 8 : 16, x ? 8 : 16);
144 test_motion("mmx", mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]);
145 test_motion("mmx_x2", mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]);
146 test_motion("mmx_y2", mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]);
147 test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]);
148 }
149 }
150 av_free(ctx);
151
152 return 0;
153 }
154