1 /*
2  * dmxdev.h
3  *
4  * Copyright (C) 2000 Ralph Metzler & Marcus 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  * 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.
20  *
21  */
22 
23 #ifndef _DMXDEV_H_
24 #define _DMXDEV_H_
25 
26 #include <linux/types.h>
27 #include <linux/spinlock.h>
28 #include <linux/kernel.h>
29 #include <linux/timer.h>
30 #include <linux/wait.h>
31 #include <linux/fs.h>
32 #include <linux/string.h>
33 #include <linux/mutex.h>
34 #include <linux/slab.h>
35 
36 #include <linux/dvb/dmx.h>
37 
38 #include "dvbdev.h"
39 #include "demux.h"
40 #include "dvb_ringbuffer.h"
41 
42 enum dmxdev_type {
43 	DMXDEV_TYPE_NONE,
44 	DMXDEV_TYPE_SEC,
45 	DMXDEV_TYPE_PES,
46 };
47 
48 enum dmxdev_state {
49 	DMXDEV_STATE_FREE,
50 	DMXDEV_STATE_ALLOCATED,
51 	DMXDEV_STATE_SET,
52 	DMXDEV_STATE_GO,
53 	DMXDEV_STATE_DONE,
54 	DMXDEV_STATE_TIMEDOUT
55 };
56 
57 struct dmxdev_feed {
58 	u16 pid;
59 	struct dmx_ts_feed *ts;
60 	struct list_head next;
61 };
62 
63 struct dmxdev_filter {
64 	union {
65 		struct dmx_section_filter *sec;
66 	} filter;
67 
68 	union {
69 		/* list of TS and PES feeds (struct dmxdev_feed) */
70 		struct list_head ts;
71 		struct dmx_section_feed *sec;
72 	} feed;
73 
74 	union {
75 		struct dmx_sct_filter_params sec;
76 		struct dmx_pes_filter_params pes;
77 	} params;
78 
79 	enum dmxdev_type type;
80 	enum dmxdev_state state;
81 	struct dmxdev *dev;
82 	struct dvb_ringbuffer buffer;
83 
84 	struct mutex mutex;
85 
86 	/* only for sections */
87 	struct timer_list timer;
88 	int todo;
89 	u8 secheader[3];
90 };
91 
92 
93 struct dmxdev {
94 	struct dvb_device *dvbdev;
95 	struct dvb_device *dvr_dvbdev;
96 
97 	struct dmxdev_filter *filter;
98 	struct dmx_demux *demux;
99 
100 	int filternum;
101 	int capabilities;
102 
103 	unsigned int exit:1;
104 #define DMXDEV_CAP_DUPLEX 1
105 	struct dmx_frontend *dvr_orig_fe;
106 
107 	struct dvb_ringbuffer dvr_buffer;
108 #define DVR_BUFFER_SIZE (10*188*1024)
109 
110 	struct mutex mutex;
111 	spinlock_t lock;
112 };
113 
114 
115 int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *);
116 void dvb_dmxdev_release(struct dmxdev *dmxdev);
117 
118 #endif /* _DMXDEV_H_ */
119