extern/ffmpeg/libavcodec/motion_test.c

   1 /* motion test. (c) 2001 Fabrice Bellard. */
   2
   3 /**
   4  * @file motion_test.c
   5  * motion test.
   6  */
   7
   8 #include <stdlib.h>
   9 #include <stdio.h>
  10 #include <string.h>
  11 #include <sys/time.h>
  12 #include <unistd.h>
  13
  14 #include "dsputil.h"
  15
  16 #include "i386/mmx.h"
  17
  18 int pix_abs16x16_mmx(uint8_t *blk1, uint8_t *blk2, int lx);
  19 int pix_abs16x16_mmx1(uint8_t *blk1, uint8_t *blk2, int lx);
  20 int pix_abs16x16_x2_mmx(uint8_t *blk1, uint8_t *blk2, int lx);
  21 int pix_abs16x16_x2_mmx1(uint8_t *blk1, uint8_t *blk2, int lx);
  22 int pix_abs16x16_x2_c(uint8_t *blk1, uint8_t *blk2, int lx);
  23 int pix_abs16x16_y2_mmx(uint8_t *blk1, uint8_t *blk2, int lx);
  24 int pix_abs16x16_y2_mmx1(uint8_t *blk1, uint8_t *blk2, int lx);
  25 int pix_abs16x16_y2_c(uint8_t *blk1, uint8_t *blk2, int lx);
  26 int pix_abs16x16_xy2_mmx(uint8_t *blk1, uint8_t *blk2, int lx);
  27 int pix_abs16x16_xy2_mmx1(uint8_t *blk1, uint8_t *blk2, int lx);
  28 int pix_abs16x16_xy2_c(uint8_t *blk1, uint8_t *blk2, int lx);
  29
  30 typedef int motion_func(uint8_t *blk1, uint8_t *blk2, int lx);
  31
  32 #define WIDTH 64
  33 #define HEIGHT 64
  34
  35 uint8_t img1[WIDTH * HEIGHT];
  36 uint8_t img2[WIDTH * HEIGHT];
  37
  38 void fill_random(uint8_t *tab, int size)
  39 {
  40     int i;
  41     for(i=0;i<size;i++) {
  42 #if 1
  43         tab[i] = random() % 256;
  44 #else
  45         tab[i] = i;
  46 #endif
  47     }
  48 }
  49
  50 void help(void)
  51 {
  52     printf("motion-test [-h]\n"
  53            "test motion implementations\n");
  54     exit(1);
  55 }
  56
  57 int64_t gettime(void)
  58 {
  59     struct timeval tv;
  60     gettimeofday(&tv,NULL);
  61     return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
  62 }
  63
  64 #define NB_ITS 500
  65
  66 int dummy;
  67
  68 void test_motion(const char *name,
  69                  motion_func *test_func, motion_func *ref_func)
  70 {
  71     int x, y, d1, d2, it;
  72     uint8_t *ptr;
  73     int64_t ti;
  74     printf("testing '%s'\n", name);
  75
  76     /* test correctness */
  77     for(it=0;it<20;it++) {
  78
  79         fill_random(img1, WIDTH * HEIGHT);
  80         fill_random(img2, WIDTH * HEIGHT);
  81
  82         for(y=0;y<HEIGHT-17;y++) {
  83             for(x=0;x<WIDTH-17;x++) {
  84                 ptr = img2 + y * WIDTH + x;
  85                 d1 = test_func(img1, ptr, WIDTH);
  86                 d2 = ref_func(img1, ptr, WIDTH);
  87                 if (d1 != d2) {
  88                     printf("error: mmx=%d c=%d\n", d1, d2);
  89                 }
  90             }
  91         }
  92     }
  93     emms();
  94
  95     /* speed test */
  96     ti = gettime();
  97     d1 = 0;
  98     for(it=0;it<NB_ITS;it++) {
  99         for(y=0;y<HEIGHT-17;y++) {
 100             for(x=0;x<WIDTH-17;x++) {
 101                 ptr = img2 + y * WIDTH + x;
 102                 d1 += test_func(img1, ptr, WIDTH);
 103             }
 104         }
 105     }
 106     emms();
 107     dummy = d1; /* avoid optimisation */
 108     ti = gettime() - ti;
 109
 110     printf("  %0.0f kop/s\n",
 111            (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
 112            (double)(ti / 1000.0));
 113 }
 114
 115
 116 int main(int argc, char **argv)
 117 {
 118     int c;
 119
 120     for(;;) {
 121         c = getopt(argc, argv, "h");
 122         if (c == -1)
 123             break;
 124         switch(c) {
 125         case 'h':
 126             help();
 127             break;
 128         }
 129     }
 130
 131     printf("ffmpeg motion test\n");
 132
 133     test_motion("mmx", pix_abs16x16_mmx, pix_abs16x16_c);
 134     test_motion("mmx_x2", pix_abs16x16_x2_mmx, pix_abs16x16_x2_c);
 135     test_motion("mmx_y2", pix_abs16x16_y2_mmx, pix_abs16x16_y2_c);
 136     test_motion("mmx_xy2", pix_abs16x16_xy2_mmx, pix_abs16x16_xy2_c);
 137     return 0;
 138 }