tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 *
17 */
18
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>
25#include <linux/mutex.h>
26
27#include "demux.h"
28
29#define DMX_TYPE_TS 0
30#define DMX_TYPE_SEC 1
31#define DMX_TYPE_PES 2
32
33#define DMX_STATE_FREE 0
34#define DMX_STATE_ALLOCATED 1
35#define DMX_STATE_SET 2
36#define DMX_STATE_READY 3
37#define DMX_STATE_GO 4
38
39#define DVB_DEMUX_MASK_MAX 18
40
41#define MAX_PID 0x1fff
42
43#define SPEED_PKTS_INTERVAL 50000
44
45struct dvb_demux_filter {
46 struct dmx_section_filter filter;
47 u8 maskandmode[DMX_MAX_FILTER_SIZE];
48 u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
49 int doneq;
50
51 struct dvb_demux_filter *next;
52 struct dvb_demux_feed *feed;
53 int index;
54 int state;
55 int type;
56
57 u16 hw_handle;
58 struct timer_list timer;
59};
60
61#define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)
62
63struct dvb_demux_feed {
64 union {
65 struct dmx_ts_feed ts;
66 struct dmx_section_feed sec;
67 } feed;
68
69 union {
70 dmx_ts_cb ts;
71 dmx_section_cb sec;
72 } cb;
73
74 struct dvb_demux *demux;
75 void *priv;
76 int type;
77 int state;
78 u16 pid;
79
80 ktime_t timeout;
81 struct dvb_demux_filter *filter;
82
83 int ts_type;
84 enum dmx_ts_pes pes_type;
85
86 int cc;
87 int pusi_seen; /* prevents feeding of garbage from previous section */
88
89 u16 peslen;
90
91 struct list_head list_head;
92 unsigned int index; /* a unique index for each feed (can be used as hardware pid filter index) */
93};
94
95struct dvb_demux {
96 struct dmx_demux dmx;
97 void *priv;
98 int filternum;
99 int feednum;
100 int (*start_feed)(struct dvb_demux_feed *feed);
101 int (*stop_feed)(struct dvb_demux_feed *feed);
102 int (*write_to_decoder)(struct dvb_demux_feed *feed,
103 const u8 *buf, size_t len);
104 u32 (*check_crc32)(struct dvb_demux_feed *feed,
105 const u8 *buf, size_t len);
106 void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
107 const u8 *src, size_t len);
108
109 int users;
110#define MAX_DVB_DEMUX_USERS 10
111 struct dvb_demux_filter *filter;
112 struct dvb_demux_feed *feed;
113
114 struct list_head frontend_list;
115
116 struct dvb_demux_feed *pesfilter[DMX_PES_OTHER];
117 u16 pids[DMX_PES_OTHER];
118 int playing;
119 int recording;
120
121#define DMX_MAX_PID 0x2000
122 struct list_head feed_list;
123 u8 tsbuf[204];
124 int tsbufp;
125
126 struct mutex mutex;
127 spinlock_t lock;
128
129 uint8_t *cnt_storage; /* for TS continuity check */
130
131 ktime_t speed_last_time; /* for TS speed check */
132 uint32_t speed_pkts_cnt; /* for TS speed check */
133};
134
135int dvb_dmx_init(struct dvb_demux *dvbdemux);
136void dvb_dmx_release(struct dvb_demux *dvbdemux);
137void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf,
138 size_t count);
139void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
140void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
141 size_t count);
142void dvb_dmx_swfilter_raw(struct dvb_demux *demux, const u8 *buf,
143 size_t count);
144
145#endif /* _DVB_DEMUX_H_ */