Statistics
| Branch: | Revision:

ffmpeg / libavcodec / motion-test.c @ 2912e87a

History | View | Annotate | Download (3.94 KB)

1
/*
2
 * (c) 2001 Fabrice Bellard
3
 *
4
 * This file is part of Libav.
5
 *
6
 * Libav 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
 * Libav 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 Libav; 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

    
42
uint8_t img1[WIDTH * HEIGHT];
43
uint8_t img2[WIDTH * HEIGHT];
44

    
45
static 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

    
60
static void help(void)
61
{
62
    printf("motion-test [-h]\n"
63
           "test motion implementations\n");
64
    exit(1);
65
}
66

    
67
static 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

    
76
int dummy;
77

    
78
static 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

    
126
int main(int argc, char **argv)
127
{
128
    AVCodecContext *ctx;
129
    int c;
130
    DSPContext cctx, mmxctx;
131
    int flags[2] = { AV_CPU_FLAG_MMX, AV_CPU_FLAG_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 = AV_CPU_FLAG_FORCE;
149
    dsputil_init(&cctx, ctx);
150
    for (c = 0; c < flags_size; c++) {
151
        int x;
152
        ctx->dsp_mask = AV_CPU_FLAG_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
}