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* (C) Copyright 2003
* Gerry Hamel,, 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
* 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);