linux/drivers/media/dvb-core/dvb_ringbuffer.c

/*
 *
 * dvb_ringbuffer.c: ring buffer implementation for the dvb driver
 *
 * Copyright (C) 2003 Oliver Endriss
 * Copyright (C) 2004 Andrew de Quincey
 *
 * based on code originally found in av7110.c & dvb_ci.c:
 * Copyright (C) 1999-2003 Ralph  Metzler
 *                       & Marcus Metzler for convergence integrated media GmbH
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * 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 Lesser General Public License for more details.
 */



#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/sched.h>
#include <linux/string.h>
#include <linux/uaccess.h>

#include <media/dvb_ringbuffer.h>

#define PKT_READY …
#define PKT_DISPOSED …


void dvb_ringbuffer_init(struct dvb_ringbuffer *rbuf, void *data, size_t len)
{ … }



int dvb_ringbuffer_empty(struct dvb_ringbuffer *rbuf)
{ … }



ssize_t dvb_ringbuffer_free(struct dvb_ringbuffer *rbuf)
{ … }



ssize_t dvb_ringbuffer_avail(struct dvb_ringbuffer *rbuf)
{ … }



void dvb_ringbuffer_flush(struct dvb_ringbuffer *rbuf)
{ … }
EXPORT_SYMBOL(…);

void dvb_ringbuffer_reset(struct dvb_ringbuffer *rbuf)
{ … }

void dvb_ringbuffer_flush_spinlock_wakeup(struct dvb_ringbuffer *rbuf)
{ … }

ssize_t dvb_ringbuffer_read_user(struct dvb_ringbuffer *rbuf, u8 __user *buf, size_t len)
{ … }

void dvb_ringbuffer_read(struct dvb_ringbuffer *rbuf, u8 *buf, size_t len)
{ … }


ssize_t dvb_ringbuffer_write(struct dvb_ringbuffer *rbuf, const u8 *buf, size_t len)
{ … }

ssize_t dvb_ringbuffer_write_user(struct dvb_ringbuffer *rbuf,
				  const u8 __user *buf, size_t len)
{ … }

ssize_t dvb_ringbuffer_pkt_write(struct dvb_ringbuffer *rbuf, u8* buf, size_t len)
{ … }

ssize_t dvb_ringbuffer_pkt_read_user(struct dvb_ringbuffer *rbuf, size_t idx,
				int offset, u8 __user *buf, size_t len)
{ … }

ssize_t dvb_ringbuffer_pkt_read(struct dvb_ringbuffer *rbuf, size_t idx,
				int offset, u8* buf, size_t len)
{ … }

void dvb_ringbuffer_pkt_dispose(struct dvb_ringbuffer *rbuf, size_t idx)
{ … }

ssize_t dvb_ringbuffer_pkt_next(struct dvb_ringbuffer *rbuf, size_t idx, size_t* pktlen)
{ … }



EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);
EXPORT_SYMBOL(…);