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.
26 #include <linux/time.h>
27 #include <linux/timer.h>
28 #include <linux/spinlock.h>
29 #include <asm/semaphore.h>
34 #define DMX_TYPE_SEC 1
35 #define DMX_TYPE_PES 2
37 #define DMX_STATE_FREE 0
38 #define DMX_STATE_ALLOCATED 1
39 #define DMX_STATE_SET 2
40 #define DMX_STATE_READY 3
41 #define DMX_STATE_GO 4
43 #define DVB_DEMUX_MASK_MAX 18
45 struct dvb_demux_filter {
46 struct dmx_section_filter filter;
47 u8 maskandmode[DMX_MAX_FILTER_SIZE];
48 u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
51 struct dvb_demux_filter *next;
52 struct dvb_demux_feed *feed;
58 struct timer_list timer;
61 #define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)
63 struct dvb_demux_feed {
65 struct dmx_ts_feed ts;
66 struct dmx_section_feed sec;
74 struct dvb_demux *demux;
82 struct timespec timeout;
83 struct dvb_demux_filter *filter;
86 enum dmx_ts_pes pes_type;
89 int pusi_seen; /* prevents feeding of garbage from previous section */
93 struct list_head list_head;
94 unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */
102 int (*start_feed)(struct dvb_demux_feed *feed);
103 int (*stop_feed)(struct dvb_demux_feed *feed);
104 int (*write_to_decoder)(struct dvb_demux_feed *feed,
105 const u8 *buf, size_t len);
106 u32 (*check_crc32)(struct dvb_demux_feed *feed,
107 const u8 *buf, size_t len);
108 void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
109 const u8 *src, size_t len);
112 #define MAX_DVB_DEMUX_USERS 10
113 struct dvb_demux_filter *filter;
114 struct dvb_demux_feed *feed;
116 struct list_head frontend_list;
118 struct dvb_demux_feed *pesfilter[DMX_TS_PES_OTHER];
119 u16 pids[DMX_TS_PES_OTHER];
123 #define DMX_MAX_PID 0x2000
124 struct list_head feed_list;
128 struct semaphore mutex;
132 int dvb_dmx_init(struct dvb_demux *dvbdemux);
133 void dvb_dmx_release(struct dvb_demux *dvbdemux);
134 void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf,
136 void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
137 void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
140 #endif /* _DVB_DEMUX_H_ */