2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "libavutil/fifo.h"
25 /* create a FIFO buffer */
26 AVFifoBuffer *fifo = av_fifo_alloc(13 * sizeof(int));
30 for (i = 0; av_fifo_space(fifo) >= sizeof(int); i++)
31 av_fifo_generic_write(fifo, &i, sizeof(int), NULL);
34 n = av_fifo_size(fifo) / sizeof(int);
35 for (i = -n + 1; i < n; i++) {
36 int *v = (int *)av_fifo_peek2(fifo, i * sizeof(int));
37 printf("%d: %d\n", i, *v);
42 n = av_fifo_size(fifo) / sizeof(int);
43 for (i = 0; i < n; i++) {
44 av_fifo_generic_peek_at(fifo, &j, i * sizeof(int), sizeof(j), NULL);
45 printf("%d: %d\n", i, j);
50 for (i = 0; av_fifo_size(fifo) >= sizeof(int); i++) {
51 av_fifo_generic_read(fifo, &j, sizeof(int), NULL);
56 /* test *ndx overflow */
58 fifo->rndx = fifo->wndx = ~(uint32_t)0 - 5;
61 for (i = 0; av_fifo_space(fifo) >= sizeof(int); i++)
62 av_fifo_generic_write(fifo, &i, sizeof(int), NULL);
65 n = av_fifo_size(fifo) / sizeof(int);
66 for (i = 0; i < n; i++) {
67 av_fifo_generic_peek_at(fifo, &j, i * sizeof(int), sizeof(j), NULL);
68 printf("%d: %d\n", i, j);