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