1/* 2 * (c) 2001 Fabrice Bellard 3 * 4 * This file is part of FFmpeg. 5 * 6 * FFmpeg is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * FFmpeg is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with FFmpeg; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21/** 22 * @file 23 * motion test. 24 */ 25 26#include <stdlib.h> 27#include <stdio.h> 28#include <string.h> 29 30#include "config.h" 31#include "dsputil.h" 32#include "libavutil/internal.h" 33#include "libavutil/lfg.h" 34#include "libavutil/mem.h" 35#include "libavutil/time.h" 36 37#undef printf 38 39#define WIDTH 64 40#define HEIGHT 64 41 42static uint8_t img1[WIDTH * HEIGHT]; 43static uint8_t img2[WIDTH * HEIGHT]; 44 45static void fill_random(uint8_t *tab, int size) 46{ 47 int i; 48 AVLFG prng; 49 50 av_lfg_init(&prng, 1); 51 for(i=0;i<size;i++) { 52 tab[i] = av_lfg_get(&prng) % 256; 53 } 54} 55 56static void help(void) 57{ 58 printf("motion-test [-h]\n" 59 "test motion implementations\n"); 60} 61 62#define NB_ITS 500 63 64int dummy; 65 66static void test_motion(const char *name, 67 me_cmp_func test_func, me_cmp_func ref_func) 68{ 69 int x, y, d1, d2, it; 70 uint8_t *ptr; 71 int64_t ti; 72 printf("testing '%s'\n", name); 73 74 /* test correctness */ 75 for(it=0;it<20;it++) { 76 77 fill_random(img1, WIDTH * HEIGHT); 78 fill_random(img2, WIDTH * HEIGHT); 79 80 for(y=0;y<HEIGHT-17;y++) { 81 for(x=0;x<WIDTH-17;x++) { 82 ptr = img2 + y * WIDTH + x; 83 d1 = test_func(NULL, img1, ptr, WIDTH, 8); 84 d2 = ref_func(NULL, img1, ptr, WIDTH, 8); 85 if (d1 != d2) { 86 printf("error: mmx=%d c=%d\n", d1, d2); 87 } 88 } 89 } 90 } 91 emms_c(); 92 93 /* speed test */ 94 ti = av_gettime_relative(); 95 d1 = 0; 96 for(it=0;it<NB_ITS;it++) { 97 for(y=0;y<HEIGHT-17;y++) { 98 for(x=0;x<WIDTH-17;x++) { 99 ptr = img2 + y * WIDTH + x; 100 d1 += test_func(NULL, img1, ptr, WIDTH, 8); 101 } 102 } 103 } 104 emms_c(); 105 dummy = d1; /* avoid optimization */ 106 ti = av_gettime_relative() - ti; 107 108 printf(" %0.0f kop/s\n", 109 (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) / 110 (double)(ti / 1000.0)); 111} 112 113 114int main(int argc, char **argv) 115{ 116 AVCodecContext *ctx; 117 int c; 118 DSPContext cctx, mmxctx; 119 int flags[2] = { AV_CPU_FLAG_MMX, AV_CPU_FLAG_MMXEXT }; 120 int flags_size = HAVE_MMXEXT ? 2 : 1; 121 122 if (argc > 1) { 123 help(); 124 return 1; 125 } 126 127 printf("ffmpeg motion test\n"); 128 129 ctx = avcodec_alloc_context3(NULL); 130 ctx->flags |= CODEC_FLAG_BITEXACT; 131 av_force_cpu_flags(0); 132 memset(&cctx, 0, sizeof(cctx)); 133 ff_dsputil_init(&cctx, ctx); 134 for (c = 0; c < flags_size; c++) { 135 int x; 136 av_force_cpu_flags(flags[c]); 137 memset(&mmxctx, 0, sizeof(mmxctx)); 138 ff_dsputil_init(&mmxctx, ctx); 139 140 for (x = 0; x < 2; x++) { 141 printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx", 142 x ? 8 : 16, x ? 8 : 16); 143 test_motion("mmx", mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]); 144 test_motion("mmx_x2", mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]); 145 test_motion("mmx_y2", mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]); 146 test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]); 147 } 148 } 149 av_free(ctx); 150 151 return 0; 152} 153