#ifndef _RINGBUFFER_H_
#define _RINGBUFFER_H_

#include <stdlib.h>

typedef struct ringbuffer_s
{
	size_t length;
	size_t head, tail;
	unsigned char * buffer;
	char ovf;
} * ringbuffer_t;

ringbuffer_t
ringbuffer_new(size_t size);
int 
ringbuffer_nonempty(ringbuffer_t buffer);
unsigned char
ringbuffer_get_char(ringbuffer_t buffer);
int
ringbuffer_put_char(ringbuffer_t buffer
		, unsigned char c);

size_t ringbuffer_empty_bytes(ringbuffer_t buffer);
#endif