/* * (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 "me_cmp.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; }