libavcodec/motion-test.c

   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 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 #include "i386/mmx.h"
  35
  36 #undef exit
  37 #undef printf
  38 #undef random
  39
  40 #define WIDTH 64
  41 #define HEIGHT 64
  42
  43 uint8_t img1[WIDTH * HEIGHT];
  44 uint8_t img2[WIDTH * HEIGHT];
  45
  46 void fill_random(uint8_t *tab, int size)
  47 {
  48     int i;
  49     for(i=0;i<size;i++) {
  50 #if 1
  51         tab[i] = random() % 256;
  52 #else
  53         tab[i] = i;
  54 #endif
  55     }
  56 }
  57
  58 void help(void)
  59 {
  60     printf("motion-test [-h]\n"
  61            "test motion implementations\n");
  62     exit(1);
  63 }
  64
  65 int64_t gettime(void)
  66 {
  67     struct timeval tv;
  68     gettimeofday(&tv,NULL);
  69     return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
  70 }
  71
  72 #define NB_ITS 500
  73
  74 int dummy;
  75
  76 void test_motion(const char *name,
  77                  me_cmp_func test_func, me_cmp_func ref_func)
  78 {
  79     int x, y, d1, d2, it;
  80     uint8_t *ptr;
  81     int64_t ti;
  82     printf("testing '%s'\n", name);
  83
  84     /* test correctness */
  85     for(it=0;it<20;it++) {
  86
  87         fill_random(img1, WIDTH * HEIGHT);
  88         fill_random(img2, WIDTH * HEIGHT);
  89
  90         for(y=0;y<HEIGHT-17;y++) {
  91             for(x=0;x<WIDTH-17;x++) {
  92                 ptr = img2 + y * WIDTH + x;
  93                 d1 = test_func(NULL, img1, ptr, WIDTH, 1);
  94                 d2 = ref_func(NULL, img1, ptr, WIDTH, 1);
  95                 if (d1 != d2) {
  96                     printf("error: mmx=%d c=%d\n", d1, d2);
  97                 }
  98             }
  99         }
 100     }
 101     emms_c();
 102
 103     /* speed test */
 104     ti = gettime();
 105     d1 = 0;
 106     for(it=0;it<NB_ITS;it++) {
 107         for(y=0;y<HEIGHT-17;y++) {
 108             for(x=0;x<WIDTH-17;x++) {
 109                 ptr = img2 + y * WIDTH + x;
 110                 d1 += test_func(NULL, img1, ptr, WIDTH, 1);
 111             }
 112         }
 113     }
 114     emms_c();
 115     dummy = d1; /* avoid optimization */
 116     ti = gettime() - ti;
 117
 118     printf("  %0.0f kop/s\n",
 119            (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
 120            (double)(ti / 1000.0));
 121 }
 122
 123
 124 int main(int argc, char **argv)
 125 {
 126     AVCodecContext *ctx;
 127     int c;
 128     DSPContext cctx, mmxctx;
 129     int flags[2] = { FF_MM_MMX, FF_MM_MMXEXT };
 130
 131     for(;;) {
 132         c = getopt(argc, argv, "h");
 133         if (c == -1)
 134             break;
 135         switch(c) {
 136         case 'h':
 137             help();
 138             break;
 139         }
 140     }
 141
 142     printf("ffmpeg motion test\n");
 143
 144     ctx = avcodec_alloc_context();
 145     ctx->dsp_mask = FF_MM_FORCE;
 146     dsputil_init(&cctx, ctx);
 147     for (c = 0; c < 2; c++) {
 148         int x;
 149         ctx->dsp_mask = FF_MM_FORCE | flags[c];
 150         dsputil_init(&mmxctx, ctx);
 151
 152         for (x = 0; x < 2; x++) {
 153             printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx",
 154                    x ? 8 : 16, x ? 8 : 16);
 155             test_motion("mmx",     mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]);
 156             test_motion("mmx_x2",  mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]);
 157             test_motion("mmx_y2",  mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]);
 158             test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]);
 159         }
 160     }
 161     av_free(ctx);
 162
 163     return 0;
 164 }