[linux-2.6-block.git] / 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.
 *
 */

#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"

/**
 * enum dvb_dmx_filter_type - type of demux feed.
 *
 * @DMX_TYPE_TS:	feed is in TS mode.
 * @DMX_TYPE_SEC:	feed is in Section mode.
 */
enum dvb_dmx_filter_type {
	DMX_TYPE_TS,
	DMX_TYPE_SEC,
};

/**
 * enum dvb_dmx_state - state machine for a demux filter.
 *
 * @DMX_STATE_FREE:		indicates that the filter is freed.
 * @DMX_STATE_ALLOCATED:	indicates that the filter was allocated
 *				to be used.
 * @DMX_STATE_READY:		indicates that the filter is ready
 *				to be used.
 * @DMX_STATE_GO:		indicates that the filter is running.
 */
enum dvb_dmx_state {
	DMX_STATE_FREE,
	DMX_STATE_ALLOCATED,
	DMX_STATE_READY,
	DMX_STATE_GO,
};

#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];
	bool doneq;

	struct dvb_demux_filter *next;
	struct dvb_demux_feed *feed;
	int index;
	enum dvb_dmx_state state;
	enum dvb_dmx_filter_type type;

	u16 hw_handle;
};

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;
	enum dvb_dmx_filter_type type;
	enum dvb_dmx_state state;
	u16 pid;

	ktime_t timeout;
	struct dvb_demux_filter *filter;

	enum ts_filter_type ts_type;
	enum dmx_ts_pes pes_type;

	int cc;
	bool 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 */

	ktime_t 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_ */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* dvb_demux.h: DVB kernel demux API
	3	*
	4	* Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler
	5	* for convergence integrated media GmbH
	6	*
	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU Lesser General Public License
	9	* as published by the Free Software Foundation; either version 2.1
	10	* of the License, or (at your option) any later version.
	11	*
	12	* This program is distributed in the hope that it will be useful,
	13	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	* GNU General Public License for more details.
	16	*
1da177e4 LT	17	*/
1da177e4 LT	18
1da177e4 LT	19	#ifndef _DVB_DEMUX_H_
	20	#define _DVB_DEMUX_H_
	21
	22	#include <linux/time.h>
	23	#include <linux/timer.h>
	24	#include <linux/spinlock.h>
3593cab5	25	#include <linux/mutex.h>
1da177e4 LT	26
	27	#include "demux.h"
	28
0463625e MCC	29	/**
	30	* enum dvb_dmx_filter_type - type of demux feed.
	31	*
	32	* @DMX_TYPE_TS: feed is in TS mode.
	33	* @DMX_TYPE_SEC: feed is in Section mode.
	34	*/
	35	enum dvb_dmx_filter_type {
	36	DMX_TYPE_TS,
	37	DMX_TYPE_SEC,
	38	};
1da177e4	39
999f3d25 MCC	40	/**
	41	* enum dvb_dmx_state - state machine for a demux filter.
	42	*
	43	* @DMX_STATE_FREE: indicates that the filter is freed.
	44	* @DMX_STATE_ALLOCATED: indicates that the filter was allocated
	45	* to be used.
	46	* @DMX_STATE_READY: indicates that the filter is ready
	47	* to be used.
	48	* @DMX_STATE_GO: indicates that the filter is running.
	49	*/
	50	enum dvb_dmx_state {
	51	DMX_STATE_FREE,
	52	DMX_STATE_ALLOCATED,
	53	DMX_STATE_READY,
	54	DMX_STATE_GO,
	55	};
1da177e4 LT	56
	57	#define DVB_DEMUX_MASK_MAX 18
	58
0d834635 AO	59	#define MAX_PID 0x1fff
0d834635 AO	60
26b9d6c0 AO	61	#define SPEED_PKTS_INTERVAL 50000
26b9d6c0 AO	62
1da177e4	63	struct dvb_demux_filter {
dad4a730 AO	64	struct dmx_section_filter filter;
	65	u8 maskandmode[DMX_MAX_FILTER_SIZE];
	66	u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
392cc7af	67	bool doneq;
1da177e4	68
dad4a730 AO	69	struct dvb_demux_filter *next;
	70	struct dvb_demux_feed *feed;
	71	int index;
999f3d25	72	enum dvb_dmx_state state;
0463625e	73	enum dvb_dmx_filter_type type;
1da177e4	74
dad4a730	75	u16 hw_handle;
1da177e4 LT	76	};
1da177e4 LT	77
1da177e4	78	struct dvb_demux_feed {
dad4a730 AO	79	union {
	80	struct dmx_ts_feed ts;
	81	struct dmx_section_feed sec;
1da177e4 LT	82	} feed;
1da177e4 LT	83
dad4a730 AO	84	union {
	85	dmx_ts_cb ts;
	86	dmx_section_cb sec;
1da177e4 LT	87	} cb;
1da177e4 LT	88
dad4a730	89	struct dvb_demux *demux;
1da177e4	90	void *priv;
0463625e	91	enum dvb_dmx_filter_type type;
999f3d25	92	enum dvb_dmx_state state;
dad4a730	93	u16 pid;
1da177e4	94
e95be158	95	ktime_t timeout;
dad4a730	96	struct dvb_demux_filter *filter;
1da177e4	97
4bc8525a	98	enum ts_filter_type ts_type;
dad4a730	99	enum dmx_ts_pes pes_type;
1da177e4	100
dad4a730	101	int cc;
2c53275c	102	bool pusi_seen; /* prevents feeding of garbage from previous section */
1da177e4	103
dad4a730	104	u16 peslen;
1da177e4 LT	105
1da177e4 LT	106	struct list_head list_head;
dad4a730	107	unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */
1da177e4 LT	108	};
	109
	110	struct dvb_demux {
dad4a730 AO	111	struct dmx_demux dmx;
	112	void *priv;
	113	int filternum;
	114	int feednum;
	115	int (start_feed)(struct dvb_demux_feed feed);
	116	int (stop_feed)(struct dvb_demux_feed feed);
	117	int (write_to_decoder)(struct dvb_demux_feed feed,
1da177e4	118	const u8 *buf, size_t len);
dad4a730	119	u32 (check_crc32)(struct dvb_demux_feed feed,
1da177e4	120	const u8 *buf, size_t len);
dad4a730	121	void (memcopy)(struct dvb_demux_feed feed, u8 *dst,
1da177e4 LT	122	const u8 *src, size_t len);
1da177e4 LT	123
dad4a730	124	int users;
1da177e4	125	#define MAX_DVB_DEMUX_USERS 10
dad4a730 AO	126	struct dvb_demux_filter *filter;
dad4a730 AO	127	struct dvb_demux_feed *feed;
1da177e4	128
dad4a730	129	struct list_head frontend_list;
1da177e4	130
fde04ab9 MCC	131	struct dvb_demux_feed *pesfilter[DMX_PES_OTHER];
fde04ab9 MCC	132	u16 pids[DMX_PES_OTHER];
dad4a730 AO	133	int playing;
dad4a730 AO	134	int recording;
1da177e4 LT	135
	136	#define DMX_MAX_PID 0x2000
	137	struct list_head feed_list;
dad4a730 AO	138	u8 tsbuf[204];
dad4a730 AO	139	int tsbufp;
1da177e4	140
3593cab5	141	struct mutex mutex;
1da177e4	142	spinlock_t lock;
0d834635 AO	143
0d834635 AO	144	uint8_t cnt_storage; / for TS continuity check */
26b9d6c0	145
e95be158	146	ktime_t speed_last_time; /* for TS speed check */
26b9d6c0	147	uint32_t speed_pkts_cnt; /* for TS speed check */
1da177e4 LT	148	};
1da177e4 LT	149
1da177e4	150	int dvb_dmx_init(struct dvb_demux *dvbdemux);
93653467	151	void dvb_dmx_release(struct dvb_demux *dvbdemux);
dad4a730 AO	152	void dvb_dmx_swfilter_packets(struct dvb_demux dvbdmx, const u8 buf,
dad4a730 AO	153	size_t count);
1da177e4	154	void dvb_dmx_swfilter(struct dvb_demux demux, const u8 buf, size_t count);
dad4a730 AO	155	void dvb_dmx_swfilter_204(struct dvb_demux demux, const u8 buf,
dad4a730 AO	156	size_t count);
8e156702 MK	157	void dvb_dmx_swfilter_raw(struct dvb_demux demux, const u8 buf,
8e156702 MK	158	size_t count);
1da177e4 LT	159
1da177e4 LT	160	#endif /* _DVB_DEMUX_H_ */