3 * Gerry Hamel, geh@ti.com, Texas Instruments
5 * SPDX-License-Identifier: GPL-2.0+
11 typedef struct circbuf {
12 unsigned int size; /* current number of bytes held */
13 unsigned int totalsize; /* number of bytes allocated */
15 char *top; /* pointer to current buffer start */
16 char *tail; /* pointer to space for next element */
18 char *data; /* all data */
19 char *end; /* end of data buffer */
22 int buf_init (circbuf_t * buf, unsigned int size);
23 int buf_free (circbuf_t * buf);
24 int buf_pop (circbuf_t * buf, char *dest, unsigned int len);
25 int buf_push (circbuf_t * buf, const char *src, unsigned int len);