Add missing license headers.
[libav.git] / libavutil / fifo.h
1 /*
2 * This file is part of FFmpeg.
3 *
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.
8 *
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.
13 *
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
17 */
18
19 #ifndef FIFO_H
20 #define FIFO_H
21
22 typedef struct AVFifoBuffer {
23 uint8_t *buffer;
24 uint8_t *rptr, *wptr, *end;
25 } AVFifoBuffer;
26
27 int av_fifo_init(AVFifoBuffer *f, int size);
28 void av_fifo_free(AVFifoBuffer *f);
29 int av_fifo_size(AVFifoBuffer *f);
30 int av_fifo_read(AVFifoBuffer *f, uint8_t *buf, int buf_size);
31 int av_fifo_generic_read(AVFifoBuffer *f, int buf_size, void (*func)(void*, void*, int), void* dest);
32 void av_fifo_write(AVFifoBuffer *f, const uint8_t *buf, int size);
33 void av_fifo_realloc(AVFifoBuffer *f, unsigned int size);
34 void av_fifo_drain(AVFifoBuffer *f, int size);
35
36 static inline uint8_t av_fifo_peek(AVFifoBuffer *f, int offs)
37 {
38 uint8_t *ptr = f->rptr + offs;
39 if (ptr >= f->end)
40 ptr -= f->end - f->buffer;
41 return *ptr;
42 }
43 #endif /* FIFO_H */