2 * dvb_demux.h: DVB kernel demux API
4 * Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler
5 * for convergence integrated media GmbH
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.
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.
17 * You should have received a copy of the GNU Lesser General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
27 #include <linux/time.h>
28 #include <linux/timer.h>
29 #include <linux/spinlock.h>
30 #include <asm/semaphore.h>
35 #define DMX_TYPE_SEC 1
36 #define DMX_TYPE_PES 2
38 #define DMX_STATE_FREE 0
39 #define DMX_STATE_ALLOCATED 1
40 #define DMX_STATE_SET 2
41 #define DMX_STATE_READY 3
42 #define DMX_STATE_GO 4
44 #define DVB_DEMUX_MASK_MAX 18
46 struct dvb_demux_filter {
47 struct dmx_section_filter filter;
48 u8 maskandmode [DMX_MAX_FILTER_SIZE];
49 u8 maskandnotmode [DMX_MAX_FILTER_SIZE];
52 struct dvb_demux_filter *next;
53 struct dvb_demux_feed *feed;
61 struct timer_list timer;
66 #define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)
68 struct dvb_demux_feed {
70 struct dmx_ts_feed ts;
71 struct dmx_section_feed sec;
79 struct dvb_demux *demux;
88 struct timespec timeout;
89 struct dvb_demux_filter *filter;
93 enum dmx_ts_pes pes_type;
96 int pusi_seen; /* prevents feeding of garbage from previous section */
100 struct list_head list_head;
101 int index; /* a unique index for each feed (can be used as hardware pid filter index) */
105 struct dmx_demux dmx;
109 int (*start_feed) (struct dvb_demux_feed *feed);
110 int (*stop_feed) (struct dvb_demux_feed *feed);
111 int (*write_to_decoder) (struct dvb_demux_feed *feed,
112 const u8 *buf, size_t len);
113 u32 (*check_crc32) (struct dvb_demux_feed *feed,
114 const u8 *buf, size_t len);
115 void (*memcopy) (struct dvb_demux_feed *feed, u8 *dst,
116 const u8 *src, size_t len);
119 #define MAX_DVB_DEMUX_USERS 10
120 struct dvb_demux_filter *filter;
121 struct dvb_demux_feed *feed;
123 struct list_head frontend_list;
125 struct dvb_demux_feed *pesfilter[DMX_TS_PES_OTHER];
126 u16 pids[DMX_TS_PES_OTHER];
130 #define DMX_MAX_PID 0x2000
131 struct list_head feed_list;
135 struct semaphore mutex;
140 int dvb_dmx_init(struct dvb_demux *dvbdemux);
141 int dvb_dmx_release(struct dvb_demux *dvbdemux);
142 void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf, size_t count);
143 void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
144 void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, size_t count);
146 #endif /* _DVB_DEMUX_H_ */