146 lines
3.5 KiB
C
146 lines
3.5 KiB
C
/*
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* dvb_demux.h: DVB kernel demux API
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*
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* Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler
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* for convergence integrated media GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _DVB_DEMUX_H_
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#define _DVB_DEMUX_H_
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#include <linux/time.h>
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#include <linux/timer.h>
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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#include "demux.h"
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#define DMX_TYPE_TS 0
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#define DMX_TYPE_SEC 1
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#define DMX_TYPE_PES 2
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#define DMX_STATE_FREE 0
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#define DMX_STATE_ALLOCATED 1
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#define DMX_STATE_SET 2
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#define DMX_STATE_READY 3
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#define DMX_STATE_GO 4
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#define DVB_DEMUX_MASK_MAX 18
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#define MAX_PID 0x1fff
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#define SPEED_PKTS_INTERVAL 50000
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struct dvb_demux_filter {
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struct dmx_section_filter filter;
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u8 maskandmode[DMX_MAX_FILTER_SIZE];
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u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
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int doneq;
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struct dvb_demux_filter *next;
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struct dvb_demux_feed *feed;
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int index;
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int state;
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int type;
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u16 hw_handle;
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struct timer_list timer;
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};
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#define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)
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struct dvb_demux_feed {
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union {
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struct dmx_ts_feed ts;
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struct dmx_section_feed sec;
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} feed;
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union {
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dmx_ts_cb ts;
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dmx_section_cb sec;
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} cb;
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struct dvb_demux *demux;
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void *priv;
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int type;
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int state;
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u16 pid;
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ktime_t timeout;
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struct dvb_demux_filter *filter;
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int ts_type;
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enum dmx_ts_pes pes_type;
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int cc;
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int pusi_seen; /* prevents feeding of garbage from previous section */
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u16 peslen;
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struct list_head list_head;
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unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */
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};
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struct dvb_demux {
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struct dmx_demux dmx;
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void *priv;
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int filternum;
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int feednum;
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int (*start_feed)(struct dvb_demux_feed *feed);
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int (*stop_feed)(struct dvb_demux_feed *feed);
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int (*write_to_decoder)(struct dvb_demux_feed *feed,
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const u8 *buf, size_t len);
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u32 (*check_crc32)(struct dvb_demux_feed *feed,
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const u8 *buf, size_t len);
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void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
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const u8 *src, size_t len);
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int users;
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#define MAX_DVB_DEMUX_USERS 10
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struct dvb_demux_filter *filter;
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struct dvb_demux_feed *feed;
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struct list_head frontend_list;
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struct dvb_demux_feed *pesfilter[DMX_PES_OTHER];
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u16 pids[DMX_PES_OTHER];
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int playing;
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int recording;
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#define DMX_MAX_PID 0x2000
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struct list_head feed_list;
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u8 tsbuf[204];
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int tsbufp;
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struct mutex mutex;
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spinlock_t lock;
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uint8_t *cnt_storage; /* for TS continuity check */
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ktime_t speed_last_time; /* for TS speed check */
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uint32_t speed_pkts_cnt; /* for TS speed check */
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};
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int dvb_dmx_init(struct dvb_demux *dvbdemux);
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void dvb_dmx_release(struct dvb_demux *dvbdemux);
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void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf,
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size_t count);
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void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
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void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
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size_t count);
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void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf,
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size_t count);
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#endif /* _DVB_DEMUX_H_ */
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