Annotation of src/usr.bin/sndiod/sock.h, Revision 1.3
1.3 ! ratchov 1: /* $OpenBSD: sock.h,v 1.2 2012/11/30 20:48:00 ratchov Exp $ */
1.1 ratchov 2: /*
3: * Copyright (c) 2008-2012 Alexandre Ratchov <alex@caoua.org>
4: *
5: * Permission to use, copy, modify, and distribute this software for any
6: * purpose with or without fee is hereby granted, provided that the above
7: * copyright notice and this permission notice appear in all copies.
8: *
9: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16: */
17: #ifndef SOCK_H
18: #define SOCK_H
19:
20: #include "amsg.h"
21:
22: struct opt;
23: struct file;
24: struct slot;
25: struct midi;
26:
27: struct sock {
28: struct sock *next;
29: int fd;
30: struct file *file;
31: struct amsg rmsg, wmsg; /* messages being sent/received */
32: unsigned int wmax; /* max bytes we're allowed to write */
33: unsigned int rmax; /* max bytes we're allowed to read */
34: unsigned int rsize; /* input bytes to read (DATA msg) */
35: unsigned int wsize; /* output bytes to write (DATA msg) */
36: unsigned int rtodo; /* input bytes not read yet */
37: unsigned int wtodo; /* output bytes not written yet */
38: #define SOCK_RIDLE 0 /* not expecting messages */
39: #define SOCK_RMSG 1 /* expecting a message */
40: #define SOCK_RDATA 2 /* data chunk being read */
41: #define SOCK_RRET 3 /* reply being returned */
42: unsigned int rstate; /* state of the read-end FSM */
43: #define SOCK_WIDLE 0 /* nothing to do */
44: #define SOCK_WMSG 1 /* amsg being written */
45: #define SOCK_WDATA 2 /* data chunk being written */
46: unsigned int wstate; /* state of the write-end FSM */
47: #define SOCK_AUTH 0 /* waiting for AUTH message */
48: #define SOCK_HELLO 1 /* waiting for HELLO message */
49: #define SOCK_INIT 2 /* parameter negotiation */
50: #define SOCK_START 3 /* filling play buffers */
51: #define SOCK_STOP 4 /* draining rec buffers */
52: unsigned int pstate; /* one of the above */
53: int tickpending; /* tick waiting to be transmitted */
54: int fillpending; /* flowctl waiting to be transmitted */
55: int stoppending; /* last STOP ack to be sent */
56: unsigned int walign; /* align written data to this */
57: unsigned int ralign; /* read data is aligned to this */
58: int lastvol; /* last volume */
59: struct opt *opt; /* "subdevice" definition */
60: struct slot *slot; /* audio device slot number */
1.2 ratchov 61: struct midi *midi; /* midi endpoint */
62: struct port *port; /* midi port */
1.1 ratchov 63: };
64:
65: struct sock *sock_new(int fd);
66: void sock_close(struct sock *);
67: extern struct sock *sock_list;
68:
69: #endif /* !defined(SOCK_H) */