Release 4.7 drivers/media/dvb-core/dvb_demux.h

/*
 * dvb_demux.h: DVB kernel demux API
 *
 * Copyright (C) 2000-2001 Marcus Metzler & Ralph 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 General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef _DVB_DEMUX_H_

#define _DVB_DEMUX_H_

#include <linux/time.h>
#include <linux/timer.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>

#include "demux.h"


#define DMX_TYPE_TS  0

#define DMX_TYPE_SEC 1

#define DMX_TYPE_PES 2


#define DMX_STATE_FREE      0

#define DMX_STATE_ALLOCATED 1

#define DMX_STATE_SET       2

#define DMX_STATE_READY     3

#define DMX_STATE_GO        4


#define DVB_DEMUX_MASK_MAX 18


#define MAX_PID 0x1fff


#define SPEED_PKTS_INTERVAL 50000


struct dvb_demux_filter {
	
struct dmx_section_filter filter;
	
u8 maskandmode[DMX_MAX_FILTER_SIZE];
	
u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
	
int doneq;

	
struct dvb_demux_filter *next;
	
struct dvb_demux_feed *feed;
	
int index;
	
int state;
	
int type;

	
u16 hw_handle;
	
struct timer_list timer;
};


#define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)


struct dvb_demux_feed {
	union {
		
struct dmx_ts_feed ts;
		
struct dmx_section_feed sec;
	} 
feed;

	union {
		
dmx_ts_cb ts;
		
dmx_section_cb sec;
	} 
cb;

	
struct dvb_demux *demux;
	
void *priv;
	
int type;
	
int state;
	
u16 pid;
	
u8 *buffer;
	
int buffer_size;

	
struct timespec timeout;
	
struct dvb_demux_filter *filter;

	
int ts_type;
	
enum dmx_ts_pes pes_type;

	
int cc;
	
int pusi_seen;		/* prevents feeding of garbage from previous section */

	
u16 peslen;

	
struct list_head list_head;
	
unsigned int index;	/* a unique index for each feed (can be used as hardware pid filter index) */
};


struct dvb_demux {
	
struct dmx_demux dmx;
	
void *priv;
	
int filternum;
	
int feednum;
	
int (*start_feed)(struct dvb_demux_feed *feed);
	
int (*stop_feed)(struct dvb_demux_feed *feed);
	
int (*write_to_decoder)(struct dvb_demux_feed *feed,
				 const u8 *buf, size_t len);
	
u32 (*check_crc32)(struct dvb_demux_feed *feed,
			    const u8 *buf, size_t len);
	
void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
			 const u8 *src, size_t len);

	
int users;

#define MAX_DVB_DEMUX_USERS 10
	
struct dvb_demux_filter *filter;
	
struct dvb_demux_feed *feed;

	
struct list_head frontend_list;

	
struct dvb_demux_feed *pesfilter[DMX_PES_OTHER];
	
u16 pids[DMX_PES_OTHER];
	
int playing;
	
int recording;


#define DMX_MAX_PID 0x2000
	
struct list_head feed_list;
	
u8 tsbuf[204];
	
int tsbufp;

	
struct mutex mutex;
	
spinlock_t lock;

	
uint8_t *cnt_storage; /* for TS continuity check */

	
struct timespec speed_last_time; /* for TS speed check */
	
uint32_t speed_pkts_cnt; /* for TS speed check */
};

int dvb_dmx_init(struct dvb_demux *dvbdemux);
void dvb_dmx_release(struct dvb_demux *dvbdemux);
void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf,
			      size_t count);
void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
			  size_t count);
void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf,
			  size_t count);

#endif /* _DVB_DEMUX_H_ */
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Directory: drivers/media/dvb-core

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