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 libavcodec/motion-test.c
23 * motion test.
24 */
25
26#include <stdlib.h>
27#include <stdio.h>
28#include <string.h>
29#include <sys/time.h>
30#include <unistd.h>
31
32#include "dsputil.h"
33
34#undef exit
35#undef printf
36#undef random
37
38#define WIDTH 64
39#define HEIGHT 64
40
41uint8_t img1[WIDTH * HEIGHT];
42uint8_t img2[WIDTH * HEIGHT];
43
44void fill_random(uint8_t *tab, int size)
45{
46    int i;
47    for(i=0;i<size;i++) {
48#if 1
49        tab[i] = random() % 256;
50#else
51        tab[i] = i;
52#endif
53    }
54}
55
56void help(void)
57{
58    printf("motion-test [-h]\n"
59           "test motion implementations\n");
60    exit(1);
61}
62
63int64_t gettime(void)
64{
65    struct timeval tv;
66    gettimeofday(&tv,NULL);
67    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
68}
69
70#define NB_ITS 500
71
72int dummy;
73
74void test_motion(const char *name,
75                 me_cmp_func test_func, me_cmp_func ref_func)
76{
77    int x, y, d1, d2, it;
78    uint8_t *ptr;
79    int64_t ti;
80    printf("testing '%s'\n", name);
81
82    /* test correctness */
83    for(it=0;it<20;it++) {
84
85        fill_random(img1, WIDTH * HEIGHT);
86        fill_random(img2, WIDTH * HEIGHT);
87
88        for(y=0;y<HEIGHT-17;y++) {
89            for(x=0;x<WIDTH-17;x++) {
90                ptr = img2 + y * WIDTH + x;
91                d1 = test_func(NULL, img1, ptr, WIDTH, 1);
92                d2 = ref_func(NULL, img1, ptr, WIDTH, 1);
93                if (d1 != d2) {
94                    printf("error: mmx=%d c=%d\n", d1, d2);
95                }
96            }
97        }
98    }
99    emms_c();
100
101    /* speed test */
102    ti = gettime();
103    d1 = 0;
104    for(it=0;it<NB_ITS;it++) {
105        for(y=0;y<HEIGHT-17;y++) {
106            for(x=0;x<WIDTH-17;x++) {
107                ptr = img2 + y * WIDTH + x;
108                d1 += test_func(NULL, img1, ptr, WIDTH, 1);
109            }
110        }
111    }
112    emms_c();
113    dummy = d1; /* avoid optimization */
114    ti = gettime() - ti;
115
116    printf("  %0.0f kop/s\n",
117           (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
118           (double)(ti / 1000.0));
119}
120
121
122int main(int argc, char **argv)
123{
124    AVCodecContext *ctx;
125    int c;
126    DSPContext cctx, mmxctx;
127    int flags[2] = { FF_MM_MMX, FF_MM_MMXEXT };
128
129    for(;;) {
130        c = getopt(argc, argv, "h");
131        if (c == -1)
132            break;
133        switch(c) {
134        case 'h':
135            help();
136            break;
137        }
138    }
139
140    printf("ffmpeg motion test\n");
141
142    ctx = avcodec_alloc_context();
143    ctx->dsp_mask = FF_MM_FORCE;
144    dsputil_init(&cctx, ctx);
145    for (c = 0; c < 2; c++) {
146        int x;
147        ctx->dsp_mask = FF_MM_FORCE | flags[c];
148        dsputil_init(&mmxctx, ctx);
149
150        for (x = 0; x < 2; x++) {
151            printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx",
152                   x ? 8 : 16, x ? 8 : 16);
153            test_motion("mmx",     mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]);
154            test_motion("mmx_x2",  mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]);
155            test_motion("mmx_y2",  mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]);
156            test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]);
157        }
158    }
159    av_free(ctx);
160
161    return 0;
162}
163