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 "dsputil.h"
32#include "libavutil/internal.h"
33#include "libavutil/lfg.h"
34#include "libavutil/mem.h"
35#include "libavutil/time.h"
36
37#undef printf
38
39#define WIDTH 64
40#define HEIGHT 64
41
42static uint8_t img1[WIDTH * HEIGHT];
43static uint8_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        tab[i] = av_lfg_get(&prng) % 256;
53    }
54}
55
56static void help(void)
57{
58    printf("motion-test [-h]\n"
59           "test motion implementations\n");
60}
61
62#define NB_ITS 500
63
64int dummy;
65
66static void test_motion(const char *name,
67                 me_cmp_func test_func, me_cmp_func ref_func)
68{
69    int x, y, d1, d2, it;
70    uint8_t *ptr;
71    int64_t ti;
72    printf("testing '%s'\n", name);
73
74    /* test correctness */
75    for(it=0;it<20;it++) {
76
77        fill_random(img1, WIDTH * HEIGHT);
78        fill_random(img2, WIDTH * HEIGHT);
79
80        for(y=0;y<HEIGHT-17;y++) {
81            for(x=0;x<WIDTH-17;x++) {
82                ptr = img2 + y * WIDTH + x;
83                d1 = test_func(NULL, img1, ptr, WIDTH, 8);
84                d2 = ref_func(NULL, img1, ptr, WIDTH, 8);
85                if (d1 != d2) {
86                    printf("error: mmx=%d c=%d\n", d1, d2);
87                }
88            }
89        }
90    }
91    emms_c();
92
93    /* speed test */
94    ti = av_gettime_relative();
95    d1 = 0;
96    for(it=0;it<NB_ITS;it++) {
97        for(y=0;y<HEIGHT-17;y++) {
98            for(x=0;x<WIDTH-17;x++) {
99                ptr = img2 + y * WIDTH + x;
100                d1 += test_func(NULL, img1, ptr, WIDTH, 8);
101            }
102        }
103    }
104    emms_c();
105    dummy = d1; /* avoid optimization */
106    ti = av_gettime_relative() - ti;
107
108    printf("  %0.0f kop/s\n",
109           (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
110           (double)(ti / 1000.0));
111}
112
113
114int main(int argc, char **argv)
115{
116    AVCodecContext *ctx;
117    int c;
118    DSPContext cctx, mmxctx;
119    int flags[2] = { AV_CPU_FLAG_MMX, AV_CPU_FLAG_MMXEXT };
120    int flags_size = HAVE_MMXEXT ? 2 : 1;
121
122    if (argc > 1) {
123        help();
124        return 1;
125    }
126
127    printf("ffmpeg motion test\n");
128
129    ctx = avcodec_alloc_context3(NULL);
130    ctx->flags |= CODEC_FLAG_BITEXACT;
131    av_force_cpu_flags(0);
132    memset(&cctx, 0, sizeof(cctx));
133    ff_dsputil_init(&cctx, ctx);
134    for (c = 0; c < flags_size; c++) {
135        int x;
136        av_force_cpu_flags(flags[c]);
137        memset(&mmxctx, 0, sizeof(mmxctx));
138        ff_dsputil_init(&mmxctx, ctx);
139
140        for (x = 0; x < 2; x++) {
141            printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx",
142                   x ? 8 : 16, x ? 8 : 16);
143            test_motion("mmx",     mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]);
144            test_motion("mmx_x2",  mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]);
145            test_motion("mmx_y2",  mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]);
146            test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]);
147        }
148    }
149    av_free(ctx);
150
151    return 0;
152}
153