1/*
2 *
3 *  Copyright (C) 2005 Mike Isely <isely@pobox.com>
4 *
5 *  This program is free software; you can redistribute it and/or modify
6 *  it under the terms of the GNU General Public License as published by
7 *  the Free Software Foundation; either version 2 of the License
8 *
9 *  This program is distributed in the hope that it will be useful,
10 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
11 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 *  GNU General Public License for more details.
13 *
14 *  You should have received a copy of the GNU General Public License
15 *  along with this program; if not, write to the Free Software
16 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
17 *
18 */
19#ifndef __PVRUSB2_CONTEXT_H
20#define __PVRUSB2_CONTEXT_H
21
22#include <linux/mutex.h>
23#include <linux/usb.h>
24#include <linux/workqueue.h>
25
26struct pvr2_hdw;     /* hardware interface - defined elsewhere */
27struct pvr2_stream;  /* stream interface - defined elsewhere */
28
29struct pvr2_context;        /* All central state */
30struct pvr2_channel;        /* One I/O pathway to a user */
31struct pvr2_context_stream; /* Wrapper for a stream */
32struct pvr2_ioread;         /* Low level stream structure */
33
34struct pvr2_context_stream {
35	struct pvr2_channel *user;
36	struct pvr2_stream *stream;
37};
38
39struct pvr2_context {
40	struct pvr2_channel *mc_first;
41	struct pvr2_channel *mc_last;
42	struct pvr2_context *exist_next;
43	struct pvr2_context *exist_prev;
44	struct pvr2_context *notify_next;
45	struct pvr2_context *notify_prev;
46	struct pvr2_hdw *hdw;
47	struct pvr2_context_stream video_stream;
48	struct mutex mutex;
49	int notify_flag;
50	int initialized_flag;
51	int disconnect_flag;
52
53	/* Called after pvr2_context initialization is complete */
54	void (*setup_func)(struct pvr2_context *);
55
56};
57
58struct pvr2_channel {
59	struct pvr2_context *mc_head;
60	struct pvr2_channel *mc_next;
61	struct pvr2_channel *mc_prev;
62	struct pvr2_context_stream *stream;
63	struct pvr2_hdw *hdw;
64	unsigned int input_mask;
65	void (*check_func)(struct pvr2_channel *);
66};
67
68struct pvr2_context *pvr2_context_create(struct usb_interface *intf,
69					 const struct usb_device_id *devid,
70					 void (*setup_func)(struct pvr2_context *));
71void pvr2_context_disconnect(struct pvr2_context *);
72
73void pvr2_channel_init(struct pvr2_channel *,struct pvr2_context *);
74void pvr2_channel_done(struct pvr2_channel *);
75int pvr2_channel_limit_inputs(struct pvr2_channel *,unsigned int);
76unsigned int pvr2_channel_get_limited_inputs(struct pvr2_channel *);
77int pvr2_channel_claim_stream(struct pvr2_channel *,
78			      struct pvr2_context_stream *);
79struct pvr2_ioread *pvr2_channel_create_mpeg_stream(
80	struct pvr2_context_stream *);
81
82int pvr2_context_global_init(void);
83void pvr2_context_global_done(void);
84
85#endif /* __PVRUSB2_CONTEXT_H */
86/*
87  Stuff for Emacs to see, in order to encourage consistent editing style:
88  *** Local Variables: ***
89  *** mode: c ***
90  *** fill-column: 75 ***
91  *** tab-width: 8 ***
92  *** c-basic-offset: 8 ***
93  *** End: ***
94  */
95