blob: 34d0f85f2695db225f892840a2368d06414d1f14
1 | /* |
2 | * (C) Copyright 2003 |
3 | * Gerry Hamel, geh@ti.com, Texas Instruments |
4 | * |
5 | * SPDX-License-Identifier: GPL-2.0+ |
6 | */ |
7 | |
8 | #ifndef __CIRCBUF_H__ |
9 | #define __CIRCBUF_H__ |
10 | |
11 | typedef struct circbuf { |
12 | unsigned int size; /* current number of bytes held */ |
13 | unsigned int totalsize; /* number of bytes allocated */ |
14 | |
15 | char *top; /* pointer to current buffer start */ |
16 | char *tail; /* pointer to space for next element */ |
17 | |
18 | char *data; /* all data */ |
19 | char *end; /* end of data buffer */ |
20 | } circbuf_t; |
21 | |
22 | int buf_init (circbuf_t * buf, unsigned int size); |
23 | int buf_free (circbuf_t * buf); |
24 | int buf_pop (circbuf_t * buf, char *dest, unsigned int len); |
25 | int buf_push (circbuf_t * buf, const char *src, unsigned int len); |
26 | |
27 | #endif |
28 |