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/*
* (c) 2001 Fabrice Bellard
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* motion test.
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "config.h"
#include "libavcodec/me_cmp.h"
#include "libavutil/cpu.h"
#include "libavutil/internal.h"
#include "libavutil/lfg.h"
#include "libavutil/mem.h"
#include "libavutil/time.h"
#undef printf
#define WIDTH 64
#define HEIGHT 64
static uint8_t img1[WIDTH * HEIGHT];
static uint8_t img2[WIDTH * HEIGHT];
static void fill_random(uint8_t *tab, int size)
{
int i;
AVLFG prng;
av_lfg_init(&prng, 1);
for(i=0;i<size;i++) {
tab[i] = av_lfg_get(&prng) % 256;
}
}
static void help(void)
{
printf("motion-test [-h]\n"
"test motion implementations\n");
}
#define NB_ITS 500
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)
{
AVCodecContext *ctx;
int c;
MECmpContext cctx, mmxctx;
int flags[2] = { AV_CPU_FLAG_MMX, AV_CPU_FLAG_MMXEXT };
int flags_size = HAVE_MMXEXT ? 2 : 1;
if (argc > 1) {
help();
return 1;
}
printf("ffmpeg motion test\n");
ctx = avcodec_alloc_context3(NULL);
ctx->flags |= AV_CODEC_FLAG_BITEXACT;
av_force_cpu_flags(0);
memset(&cctx, 0, sizeof(cctx));
ff_me_cmp_init(&cctx, ctx);
for (c = 0; c < flags_size; c++) {
int x;
av_force_cpu_flags(flags[c]);
memset(&mmxctx, 0, sizeof(mmxctx));
ff_me_cmp_init(&mmxctx, ctx);
for (x = 0; x < 2; x++) {
printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx",
x ? 8 : 16, x ? 8 : 16);
test_motion("mmx", mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]);
test_motion("mmx_x2", mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]);
test_motion("mmx_y2", mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]);
test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]);
}
}
av_free(ctx);
return 0;
}
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