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