Function test_motion

libavcodec/tests/motion.c:66–111

int dummy;

static void test_motion(const char *name,
                 me_cmp_func test_func, me_cmp_func ref_func)
{
    int x, y, d1, d2, it;
    uint8_t *ptr;
    int64_t ti;
    printf("testing '%s'\n", name);

    /* test correctness */
    for(it=0;it<20;it++) {

        fill_random(img1, WIDTH * HEIGHT);
        fill_random(img2, WIDTH * HEIGHT);

        for(y=0;y<HEIGHT-17;y++) {
            for(x=0;x<WIDTH-17;x++) {
                ptr = img2 + y * WIDTH + x;
                d1 = test_func(NULL, img1, ptr, WIDTH, 8);
                d2 = ref_func(NULL, img1, ptr, WIDTH, 8);
                if (d1 != d2) {
                    printf("error: mmx=%d c=%d\n", d1, d2);
                }
            }
        }
    }
    emms_c();

    /* speed test */
    ti = av_gettime_relative();
    d1 = 0;
    for(it=0;it<NB_ITS;it++) {
        for(y=0;y<HEIGHT-17;y++) {
            for(x=0;x<WIDTH-17;x++) {
                ptr = img2 + y * WIDTH + x;
                d1 += test_func(NULL, img1, ptr, WIDTH, 8);
            }
        }
    }
    emms_c();
    dummy = d1; /* avoid optimization */
    ti = av_gettime_relative() - ti;

    printf("  %0.0f kop/s\n",
           (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
           (double)(ti / 1000.0));
}


int main(int argc, char **argv)