mirror of https://git.ffmpeg.org/ffmpeg.git
156 lines
3.8 KiB
C
156 lines
3.8 KiB
C
/*
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* (c) 2001 Fabrice Bellard
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* motion test.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/time.h>
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#include <unistd.h>
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#include "config.h"
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#include "dsputil.h"
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#include "libavutil/lfg.h"
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#include "libavutil/time.h"
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#undef printf
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#define WIDTH 64
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#define HEIGHT 64
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static uint8_t img1[WIDTH * HEIGHT];
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static uint8_t img2[WIDTH * HEIGHT];
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static void fill_random(uint8_t *tab, int size)
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{
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int i;
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AVLFG prng;
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av_lfg_init(&prng, 1);
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for(i=0;i<size;i++) {
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tab[i] = av_lfg_get(&prng) % 256;
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}
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}
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static void help(void)
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{
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printf("motion-test [-h]\n"
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"test motion implementations\n");
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}
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#define NB_ITS 500
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int dummy;
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static void test_motion(const char *name,
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me_cmp_func test_func, me_cmp_func ref_func)
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{
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int x, y, d1, d2, it;
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uint8_t *ptr;
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int64_t ti;
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printf("testing '%s'\n", name);
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/* test correctness */
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for(it=0;it<20;it++) {
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fill_random(img1, WIDTH * HEIGHT);
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fill_random(img2, WIDTH * HEIGHT);
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for(y=0;y<HEIGHT-17;y++) {
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for(x=0;x<WIDTH-17;x++) {
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ptr = img2 + y * WIDTH + x;
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d1 = test_func(NULL, img1, ptr, WIDTH, 1);
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d2 = ref_func(NULL, img1, ptr, WIDTH, 1);
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if (d1 != d2) {
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printf("error: mmx=%d c=%d\n", d1, d2);
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}
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}
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}
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}
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emms_c();
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/* speed test */
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ti = av_gettime();
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d1 = 0;
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for(it=0;it<NB_ITS;it++) {
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for(y=0;y<HEIGHT-17;y++) {
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for(x=0;x<WIDTH-17;x++) {
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ptr = img2 + y * WIDTH + x;
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d1 += test_func(NULL, img1, ptr, WIDTH, 1);
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}
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}
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}
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emms_c();
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dummy = d1; /* avoid optimization */
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ti = av_gettime() - ti;
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printf(" %0.0f kop/s\n",
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(double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
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(double)(ti / 1000.0));
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}
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int main(int argc, char **argv)
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{
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AVCodecContext *ctx;
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int c;
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DSPContext cctx, mmxctx;
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int flags[2] = { AV_CPU_FLAG_MMX, AV_CPU_FLAG_MMX2 };
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int flags_size = HAVE_MMX2 ? 2 : 1;
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for(;;) {
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c = getopt(argc, argv, "h");
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if (c == -1)
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break;
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switch(c) {
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case 'h':
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help();
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return 1;
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}
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}
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printf("Libav motion test\n");
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ctx = avcodec_alloc_context3(NULL);
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ctx->dsp_mask = AV_CPU_FLAG_FORCE;
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ff_dsputil_init(&cctx, ctx);
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for (c = 0; c < flags_size; c++) {
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int x;
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ctx->dsp_mask = AV_CPU_FLAG_FORCE | flags[c];
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ff_dsputil_init(&mmxctx, ctx);
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for (x = 0; x < 2; x++) {
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printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx",
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x ? 8 : 16, x ? 8 : 16);
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test_motion("mmx", mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]);
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test_motion("mmx_x2", mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]);
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test_motion("mmx_y2", mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]);
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test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]);
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}
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}
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av_free(ctx);
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return 0;
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}
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