2 * (c) 2001 Fabrice Bellard
4 * This file is part of FFmpeg.
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.
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.
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
34 #include "libavutil/lfg.h"
35 #include "libavutil/time.h"
42 static uint8_t img1[WIDTH * HEIGHT];
43 static uint8_t img2[WIDTH * HEIGHT];
45 static void fill_random(uint8_t *tab, int size)
50 av_lfg_init(&prng, 1);
52 tab[i] = av_lfg_get(&prng) % 256;
56 static void help(void)
58 printf("motion-test [-h]\n"
59 "test motion implementations\n");
66 static void test_motion(const char *name,
67 me_cmp_func test_func, me_cmp_func ref_func)
72 printf("testing '%s'\n", name);
74 /* test correctness */
75 for(it=0;it<20;it++) {
77 fill_random(img1, WIDTH * HEIGHT);
78 fill_random(img2, WIDTH * HEIGHT);
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, 1);
84 d2 = ref_func(NULL, img1, ptr, WIDTH, 1);
86 printf("error: mmx=%d c=%d\n", d1, d2);
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, 1);
105 dummy = d1; /* avoid optimization */
106 ti = av_gettime() - ti;
108 printf(" %0.0f kop/s\n",
109 (double)NB_ITS * (WIDTH - 16) * (HEIGHT - 16) /
110 (double)(ti / 1000.0));
114 int main(int argc, char **argv)
118 DSPContext cctx, mmxctx;
119 int flags[2] = { AV_CPU_FLAG_MMX, AV_CPU_FLAG_MMX2 };
120 int flags_size = HAVE_MMX2 ? 2 : 1;
123 c = getopt(argc, argv, "h");
133 printf("ffmpeg motion test\n");
135 ctx = avcodec_alloc_context3(NULL);
136 ctx->dsp_mask = AV_CPU_FLAG_FORCE;
137 ff_dsputil_init(&cctx, ctx);
138 for (c = 0; c < flags_size; c++) {
140 ctx->dsp_mask = AV_CPU_FLAG_FORCE | flags[c];
141 ff_dsputil_init(&mmxctx, ctx);
143 for (x = 0; x < 2; x++) {
144 printf("%s for %dx%d pixels\n", c ? "mmx2" : "mmx",
145 x ? 8 : 16, x ? 8 : 16);
146 test_motion("mmx", mmxctx.pix_abs[x][0], cctx.pix_abs[x][0]);
147 test_motion("mmx_x2", mmxctx.pix_abs[x][1], cctx.pix_abs[x][1]);
148 test_motion("mmx_y2", mmxctx.pix_abs[x][2], cctx.pix_abs[x][2]);
149 test_motion("mmx_xy2", mmxctx.pix_abs[x][3], cctx.pix_abs[x][3]);