| wdenk | 232c150 | 2004-03-12 00:14:09 +0000 | [diff] [blame] | 1 | /* |
| 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 | |
| 24 | typedef 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 | |
| 35 | int buf_init (circbuf_t * buf, unsigned int size); |
| 36 | int buf_free (circbuf_t * buf); |
| 37 | int buf_pop (circbuf_t * buf, char *dest, unsigned int len); |
| 38 | int buf_push (circbuf_t * buf, const char *src, unsigned int len); |
| 39 | |
| 40 | #endif |