2 * Asterisk -- A telephony toolkit for Linux.
4 * Voice Modem Definitions
6 * Copyright (C) 1999, Mark Spencer
8 * Mark Spencer <markster@linux-support.net>
10 * This program is free software, distributed under the terms of
11 * the GNU General Public License
14 #ifndef _ASTERISK_VMODEM_H
15 #define _ASTERISK_VMODEM_H
17 #include <asterisk/frame.h>
18 #include <asterisk/channel.h>
23 #define MODEM_DEV_TELCO 0
24 #define MODEM_DEV_TELCO_SPK 4
25 #define MODEM_DEV_SPKRPHONE 6
26 #define MODEM_DEV_HANDSET 9
28 /* Thirty millisecond sections */
29 #define MODEM_MAX_LEN 30
30 #define MODEM_MAX_BUF MODEM_MAX_LEN * 16
32 #define AST_MAX_INIT_STR 256
36 struct ast_modem_driver {
43 char * (*identify)(struct ast_modem_pvt *);
44 int (*init)(struct ast_modem_pvt *);
45 int (*setdev)(struct ast_modem_pvt *, int dev);
46 struct ast_frame * (*read)(struct ast_modem_pvt *);
47 int (*write)(struct ast_modem_pvt *, struct ast_frame *fr);
48 int (*dial)(struct ast_modem_pvt *, char *);
49 int (*answer)(struct ast_modem_pvt *);
50 int (*hangup)(struct ast_modem_pvt *);
51 int (*startrec)(struct ast_modem_pvt *);
52 int (*stoprec)(struct ast_modem_pvt *);
53 int (*startpb)(struct ast_modem_pvt *);
54 int (*stoppb)(struct ast_modem_pvt *);
55 int (*setsilence)(struct ast_modem_pvt *, int onoff);
56 int (*dialdigit)(struct ast_modem_pvt *, char digit);
57 struct ast_modem_driver *next;
60 #define MODEM_MODE_IMMEDIATE 0
61 #define MODEM_MODE_WAIT_RING 1
62 #define MODEM_MODE_WAIT_ANSWER 2
64 struct ast_modem_pvt {
65 int fd; /* Raw file descriptor for this device */
66 FILE *f; /* FILE * representation of device */
67 struct ast_channel *owner; /* Channel we belong to, possibly NULL */
68 char dev[256]; /* Device name */
69 struct ast_frame fr; /* Frame */
70 char offset[AST_FRIENDLY_OFFSET];
71 char obuf[MODEM_MAX_BUF]; /* Outgoing buffer */
73 char dialtype; /* Pulse or tone dialling */
74 char dialtimeout; /* Time to wait for dial timeout */
76 int mode; /* Immediate, or wait for an answer */
77 int ministate; /* State of modem in miniature */
78 int stripmsd; /* Digits to strip on outgoing numbers */
79 char context[AST_MAX_EXTENSION];
80 char cid[AST_MAX_EXTENSION]; /* Caller ID if available */
81 char initstr[AST_MAX_INIT_STR]; /* Modem initialization String */
82 char language[MAX_LANGUAGE]; /* default language */
83 char response[256]; /* Static response buffer */
84 struct ast_modem_driver *mc; /* Modem Capability */
85 struct ast_modem_pvt *next; /* Next channel in list */
88 /* Register a driver */
89 extern int ast_register_modem_driver(struct ast_modem_driver *mc);
91 /* Unregister a driver */
92 extern int ast_unregister_modem_driver(struct ast_modem_driver *mc);
94 /* Send the command cmd (length len, or 0 if pure ascii) on modem */
95 extern int ast_modem_send(struct ast_modem_pvt *p, char *cmd, int len);
97 /* Wait for result to occur. Return non-zero if times out or error, last
98 response is stored in p->response */
99 extern int ast_modem_expect(struct ast_modem_pvt *p, char *result, int timeout);
101 /* Wait for result to occur. response is stored in p->response */
102 extern int ast_modem_read_response(struct ast_modem_pvt *p, int timeout);
104 /* Used by modem drivers to start up the PBX on a RING */
105 extern struct ast_channel *ast_modem_new(struct ast_modem_pvt *i, int state);
107 /* Trim off trailing mess */
108 extern void ast_modem_trim(char *s);