diff options
Diffstat (limited to 'include/circbuf.h')
| -rw-r--r-- | include/circbuf.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/include/circbuf.h b/include/circbuf.h new file mode 100644 index 000000000..e10ed9571 --- /dev/null +++ b/include/circbuf.h @@ -0,0 +1,40 @@ +/* + * (C) Copyright 2003 + * Gerry Hamel, geh@ti.com, Texas Instruments + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef __CIRCBUF_H__ +#define __CIRCBUF_H__ + +typedef struct circbuf { + unsigned int size; /* current number of bytes held */ + unsigned int totalsize; /* number of bytes allocated */ + + char *top; /* pointer to current buffer start */ + char *tail; /* pointer to space for next element */ + + char *data; /* all data */ + char *end; /* end of data buffer */ +} circbuf_t; + +int buf_init (circbuf_t * buf, unsigned int size); +int buf_free (circbuf_t * buf); +int buf_pop (circbuf_t * buf, char *dest, unsigned int len); +int buf_push (circbuf_t * buf, const char *src, unsigned int len); + +#endif |