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wdenk232c1502004-03-12 00:14:09 +00001/*
2 * (C) Copyright 2003
3 * Gerry Hamel, geh@ti.com, Texas Instruments
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 *
19 */
20
21#ifndef __CIRCBUF_H__
22#define __CIRCBUF_H__
23
24typedef struct circbuf {
25 unsigned int size; /* current number of bytes held */
26 unsigned int totalsize; /* number of bytes allocated */
27
28 char *top; /* pointer to current buffer start */
29 char *tail; /* pointer to space for next element */
30
31 char *data; /* all data */
32 char *end; /* end of data buffer */
33} circbuf_t;
34
35int buf_init (circbuf_t * buf, unsigned int size);
36int buf_free (circbuf_t * buf);
37int buf_pop (circbuf_t * buf, char *dest, unsigned int len);
38int buf_push (circbuf_t * buf, const char *src, unsigned int len);
39
40#endif