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/*
Ringbuffer Implementation for gtvscreen
Copyright (C) 2000 Marcus Metzler (mocm@metzlerbros.de)
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
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef RINGBUFFY_H
#define RINGBUFFY_H
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define FULL_BUFFER -1000
typedef struct ringbuffy{
int read_pos;
int write_pos;
int size;
char *buffy;
} ringbuffy;
int ring_init (ringbuffy *rbuf, int size);
void ring_destroy(ringbuffy *rbuf);
int ring_write(ringbuffy *rbuf, char *data, int count);
int ring_read(ringbuffy *rbuf, char *data, int count);
int ring_write_file(ringbuffy *rbuf, int fd, int count);
int ring_read_file(ringbuffy *rbuf, int fd, int count);
int ring_rest(ringbuffy *rbuf);
int ring_peek(ringbuffy *rbuf, char *data, int count, long off);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* RINGBUFFY_H */
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