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 <linux/mutex.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 #define MAX_PID 0x1fff
47 struct dvb_demux_filter {
48 struct dmx_section_filter filter;
49 u8 maskandmode[DMX_MAX_FILTER_SIZE];
50 u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
53 struct dvb_demux_filter *next;
54 struct dvb_demux_feed *feed;
60 struct timer_list timer;
63 #define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)
65 struct dvb_demux_feed {
67 struct dmx_ts_feed ts;
68 struct dmx_section_feed sec;
76 struct dvb_demux *demux;
84 struct timespec timeout;
85 struct dvb_demux_filter *filter;
88 enum dmx_ts_pes pes_type;
91 int pusi_seen; /* prevents feeding of garbage from previous section */
95 struct list_head list_head;
96 unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */
100 struct dmx_demux dmx;
104 int (*start_feed)(struct dvb_demux_feed *feed);
105 int (*stop_feed)(struct dvb_demux_feed *feed);
106 int (*write_to_decoder)(struct dvb_demux_feed *feed,
107 const u8 *buf, size_t len);
108 u32 (*check_crc32)(struct dvb_demux_feed *feed,
109 const u8 *buf, size_t len);
110 void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
111 const u8 *src, size_t len);
114 #define MAX_DVB_DEMUX_USERS 10
115 struct dvb_demux_filter *filter;
116 struct dvb_demux_feed *feed;
118 struct list_head frontend_list;
120 struct dvb_demux_feed *pesfilter[DMX_TS_PES_OTHER];
121 u16 pids[DMX_TS_PES_OTHER];
125 #define DMX_MAX_PID 0x2000
126 struct list_head feed_list;
133 uint8_t *cnt_storage; /* for TS continuity check */
136 int dvb_dmx_init(struct dvb_demux *dvbdemux);
137 void dvb_dmx_release(struct dvb_demux *dvbdemux);
138 void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf,
140 void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
141 void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
144 #endif /* _DVB_DEMUX_H_ */