#include <stdint.h>

#ifndef __CBUFFER_H
#define __CBUFFER_H

struct cbuffer {
	uint8_t buffer[1 << 10];
	int read_index;
	int write_index;
};

#define buffer_size(buf) (sizeof((buf)->buffer))
#define buffer_used(buf) (((buf)->write_index - (buf)->read_index) & (buffer_size(buf) - 1))
#define buffer_free(buf) (buffer_size(buf) - 1 - buffer_used(buf))

int buffered_write(int fd, struct cbuffer *buf);
int buffered_read(int fd, struct cbuffer *buf);

#define DIR_REV(i) ((i == 1) ? 0 : 1)

#endif /* ~__CBUFFER_H */