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#include <sys/time.h>
30#include <unistd.h>
31
32#include "config.h"
33#include "dsputil.h"
34#include "libavutil/lfg.h"
35
36#undef exit
37#undef printf
38
39#define WIDTH 64
40#define HEIGHT 64
41
42uint8_t img1[WIDTH * HEIGHT];
43uint8_t img2[WIDTH * HEIGHT];
44
45static void fill_random(uint8_t *tab, int size)
46{
47    int i;
48    AVLFG prng;
49
50    av_lfg_init(&prng, 1);
51    for(i=0;i<size;i++) {
52#if 1
53        tab[i] = av_lfg_get(&prng) % 256;
54#else
55        tab[i] = i;
56#endif
57    }
58}
59
60static void help(void)
61{
62    printf("motion-test [-h]\n"
63           "test motion implementations\n");
64    exit(1);
65}
66
67static int64_t gettime(void)
68{
69    struct timeval tv;
70    gettimeofday(&tv,NULL);
71    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
72}
73
74#define NB_ITS 500
75
76int dummy;
77
78static void test_motion(const char *name,
79                 me_cmp_func test_func, me_cmp_func ref_func)
80{
81    int x, y, d1, d2, it;
82    uint8_t *ptr;
83    int64_t ti;
84    printf("testing '%s'\n", name);
85
86    /* test correctness */
87    for(it=0;it<20;it++) {
88
89        fill_random(img1, WIDTH * HEIGHT);
90        fill_random(img2, WIDTH * HEIGHT);
91
92        for(y=0;y<HEIGHT-17;y++) {
93            for(x=0;x<WIDTH-17;x++) {
94                ptr = img2 + y * WIDTH + x;
95                d1 = test_func(NULL, img1, ptr, WIDTH, 1);
96                d2 = ref_func(NULL, img1, ptr, WIDTH, 1);
97                if (d1 != d2) {
98                    printf("error: mmx=%d c=%d\n", d1, d2);
99                }
100            }
101        }
102    }
103    emms_c();
104
105    /* speed test */
106    ti = gettime();
107    d1 = 0;
108    for(it=0;it<NB_ITS;it++) {
109        for(y=0;y<HEIGHT-17;y++) {
110            for(x=0;x<WIDTH-17;x++) {
111                ptr = img2 + y * WIDTH + x;
112                d1 += test_func(NULL, img1, ptr, WIDTH, 1);
113            }
114        }
115    }
116    emms_c();
117    dummy = d1; /* avoid optimization */
118    ti = gettime() - ti;
119
120    printf("  %0.0f kop/s\n",
121           (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
122           (double)(ti / 1000.0));
123}
124
125
126int main(int argc, char **argv)
127{
128    AVCodecContext *ctx;
129    int c;
130    DSPContext cctx, mmxctx;
131    int flags[2] = { FF_MM_MMX, FF_MM_MMX2 };
132    int flags_size = HAVE_MMX2 ? 2 : 1;
133
134    for(;;) {
135        c = getopt(argc, argv, "h");
136        if (c == -1)
137            break;
138        switch(c) {
139        case 'h':
140            help();
141            break;
142        }
143    }
144
145    printf("ffmpeg motion test\n");
146
147    ctx = avcodec_alloc_context();
148    ctx->dsp_mask = FF_MM_FORCE;
149    dsputil_init(&cctx, ctx);
150    for (c = 0; c < flags_size; c++) {
151        int x;
152        ctx->dsp_mask = FF_MM_FORCE | flags[c];
153        dsputil_init(&mmxctx, ctx);
154
155        for (x = 0; x < 2; x++) {
156            printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx",
157                   x ? 8 : 16, x ? 8 : 16);
158            test_motion("mmx",     mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]);
159            test_motion("mmx_x2",  mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]);
160            test_motion("mmx_y2",  mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]);
161            test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]);
162        }
163    }
164    av_free(ctx);
165
166    return 0;
167}
168