4 * Asterisk -- An open source telephony toolkit.
6 * Copyright (C) 1999 - 2009, Digium, Inc.
8 * Mark Spencer <markster@digium.com>
10 * See http://www.asterisk.org for more information about
11 * the Asterisk project. Please do not directly contact
12 * any of the maintainers of this project for assistance;
13 * the project provides a web site, mailing lists and IRC
14 * channels for your use.
16 * This program is free software, distributed under the terms of
17 * the GNU General Public License Version 2. See the LICENSE file
18 * at the top of the source tree.
23 * \brief Interface header for analog signaling module
25 * \author Matthew Fredrickson <creslin@digium.com>
28 #include "asterisk/channel.h"
29 #include "asterisk/frame.h"
30 #include "asterisk/smdi.h"
32 #define ANALOG_SMDI_MD_WAIT_TIMEOUT 1500 /* 1.5 seconds */
33 #define ANALOG_MAX_CID 300
35 #define RING_PATTERNS 3
37 /* Signalling types supported */
53 ANALOG_SIG_FGC_CAMAMF,
58 ANALOG_SIG_SF_FEATDMF,
59 ANALOG_SIG_FEATDMF_TA,
64 ANALOG_TONE_RINGTONE = 0,
66 ANALOG_TONE_CONGESTION,
68 ANALOG_TONE_DIALRECALL,
73 ANALOG_EVENT_NONE = 0,
75 ANALOG_EVENT_RINGOFFHOOK,
76 ANALOG_EVENT_WINKFLASH,
79 ANALOG_EVENT_DIALCOMPLETE,
80 ANALOG_EVENT_RINGERON,
81 ANALOG_EVENT_RINGEROFF,
82 ANALOG_EVENT_HOOKCOMPLETE,
83 ANALOG_EVENT_PULSE_START,
84 ANALOG_EVENT_POLARITY,
85 ANALOG_EVENT_RINGBEGIN,
86 ANALOG_EVENT_EC_DISABLED,
88 ANALOG_EVENT_NEONMWI_ACTIVE,
89 ANALOG_EVENT_NEONMWI_INACTIVE,
90 ANALOG_EVENT_TX_CED_DETECTED,
91 ANALOG_EVENT_RX_CED_DETECTED,
92 ANALOG_EVENT_EC_NLP_DISABLED,
93 ANALOG_EVENT_EC_NLP_ENABLED,
94 ANALOG_EVENT_ERROR, /* not a DAHDI event */
95 ANALOG_EVENT_DTMFCID, /* not a DAHDI event */
96 ANALOG_EVENT_PULSEDIGIT = (1 << 16),
97 ANALOG_EVENT_DTMFDOWN = (1 << 17),
98 ANALOG_EVENT_DTMFUP = (1 << 18),
102 ANALOG_SUB_REAL = 0, /*!< Active call */
103 ANALOG_SUB_CALLWAIT, /*!< Call-Waiting call on hold */
104 ANALOG_SUB_THREEWAY, /*!< Three-way call */
107 enum analog_dsp_digitmode {
108 ANALOG_DIGITMODE_DTMF = 1,
112 enum analog_cid_start {
113 ANALOG_CID_START_POLARITY = 1,
114 ANALOG_CID_START_POLARITY_IN,
115 ANALOG_CID_START_RING,
116 ANALOG_CID_START_DTMF_NOALERT,
120 ANALOG_DIAL_OP_REPLACE = 2,
124 struct analog_dialoperation {
129 struct analog_callback {
130 /* Unlock the private in the signalling private structure. This is used for three way calling madness. */
131 void (* const unlock_private)(void *pvt);
132 /* Lock the private in the signalling private structure. ... */
133 void (* const lock_private)(void *pvt);
134 /* Do deadlock avoidance for the private signaling structure lock. */
135 void (* const deadlock_avoidance_private)(void *pvt);
137 /* Function which is called back to handle any other DTMF events that are received. Called by analog_handle_event. Why is this
138 * important to use, instead of just directly using events received before they are passed into the library? Because sometimes,
139 * (CWCID) the library absorbs DTMF events received. */
140 void (* const handle_dtmf)(void *pvt, struct ast_channel *ast, enum analog_sub analog_index, struct ast_frame **dest);
142 int (* const get_event)(void *pvt);
143 int (* const wait_event)(void *pvt);
144 int (* const is_off_hook)(void *pvt);
145 int (* const is_dialing)(void *pvt, enum analog_sub sub);
146 /* Start a trunk type signalling protocol (everything except phone ports basically */
147 int (* const start)(void *pvt);
148 int (* const ring)(void *pvt);
149 int (* const flash)(void *pvt);
150 /*! \brief Set channel on hook */
151 int (* const on_hook)(void *pvt);
152 /*! \brief Set channel off hook */
153 int (* const off_hook)(void *pvt);
154 void (* const set_needringing)(void *pvt, int value);
155 /*! \brief Set FXS line polarity to 0=IDLE NZ=REVERSED */
156 void (* const set_polarity)(void *pvt, int value);
157 /*! \brief Reset FXS line polarity to IDLE, based on answeronpolarityswitch and hanguponpolarityswitch */
158 void (* const start_polarityswitch)(void *pvt);
159 /*! \brief Switch FXS line polarity, based on answeronpolarityswitch=yes */
160 void (* const answer_polarityswitch)(void *pvt);
161 /*! \brief Switch FXS line polarity, based on answeronpolarityswitch and hanguponpolarityswitch */
162 void (* const hangup_polarityswitch)(void *pvt);
163 /* We're assuming that we're going to only wink on ANALOG_SUB_REAL - even though in the code there's an argument to the index
165 int (* const wink)(void *pvt, enum analog_sub sub);
166 int (* const dial_digits)(void *pvt, enum analog_sub sub, struct analog_dialoperation *dop);
167 int (* const send_fsk)(void *pvt, struct ast_channel *ast, char *fsk);
168 int (* const play_tone)(void *pvt, enum analog_sub sub, enum analog_tone tone);
170 int (* const set_echocanceller)(void *pvt, int enable);
171 int (* const train_echocanceller)(void *pvt);
172 int (* const dsp_set_digitmode)(void *pvt, enum analog_dsp_digitmode mode);
173 int (* const dsp_reset_and_flush_digits)(void *pvt);
174 int (* const send_callerid)(void *pvt, int cwcid, struct ast_party_caller *caller);
175 /* Returns 0 if CID received. Returns 1 if event received, and -1 if error. name and num are size ANALOG_MAX_CID */
176 int (* const get_callerid)(void *pvt, char *name, char *num, enum analog_event *ev, size_t timeout);
177 /* Start CID detection */
178 int (* const start_cid_detect)(void *pvt, int cid_signalling);
179 /* Stop CID detection */
180 int (* const stop_cid_detect)(void *pvt);
182 /* Play the CAS callwait tone on the REAL sub, then repeat after 10 seconds, and then stop */
183 int (* const callwait)(void *pvt);
184 /* Stop playing any CAS call waiting announcement tones that might be running on the REAL sub */
185 int (* const stop_callwait)(void *pvt);
187 /* Bearer control related (non signalling) callbacks */
188 int (* const allocate_sub)(void *pvt, enum analog_sub sub);
189 int (* const unallocate_sub)(void *pvt, enum analog_sub sub);
190 /*! This function is for swapping of the owners with the underlying subs. Typically it means you need to change the fds
191 * of the new owner to be the fds of the sub specified, for each of the two subs given */
192 void (* const swap_subs)(void *pvt, enum analog_sub a, struct ast_channel *new_a_owner, enum analog_sub b, struct ast_channel *new_b_owner);
193 struct ast_channel * (* const new_ast_channel)(void *pvt, int state, int startpbx, enum analog_sub sub, const struct ast_channel *requestor);
195 /* Add the given sub to a conference */
196 int (* const conf_add)(void *pvt, enum analog_sub sub);
197 /* Delete the given sub from any conference that might be running on the channels */
198 int (* const conf_del)(void *pvt, enum analog_sub sub);
200 /* If you would like to do any optimizations after the conference members have been added and removed,
201 * you can do so here */
202 int (* const complete_conference_update)(void *pvt, int needconf);
204 /* This is called when there are no more subchannels on the given private that are left up,
205 * for any cleanup or whatever else you would like to do. Called from analog_hangup() */
206 void (* const all_subchannels_hungup)(void *pvt);
208 int (* const has_voicemail)(void *pvt);
209 int (* const check_for_conference)(void *pvt);
210 void (* const handle_notify_message)(struct ast_channel *chan, void *pvt, int cid_flags, int neon_mwievent);
212 /* callbacks for increasing and decreasing ss_thread_count, will handle locking and condition signal */
213 void (* const increase_ss_count)(void);
214 void (* const decrease_ss_count)(void);
216 int (* const distinctive_ring)(struct ast_channel *chan, void *pvt, int idx, int *ringdata);
217 /* Sets the specified sub-channel in and out of signed linear mode, returns the value that was overwritten */
218 int (* const set_linear_mode)(void *pvt, enum analog_sub sub, int linear_mode);
219 void (* const set_inthreeway)(void *pvt, enum analog_sub sub, int inthreeway);
220 void (* const get_and_handle_alarms)(void *pvt);
221 void * (* const get_sigpvt_bridged_channel)(struct ast_channel *chan);
222 int (* const get_sub_fd)(void *pvt, enum analog_sub sub);
223 void (* const set_cadence)(void *pvt, int *cidrings, struct ast_channel *chan);
224 void (* const set_alarm)(void *pvt, int in_alarm);
225 void (* const set_dialing)(void *pvt, int is_dialing);
226 void (* const set_ringtimeout)(void *pvt, int ringt);
227 void (* const set_waitingfordt)(void *pvt, struct ast_channel *ast);
228 int (* const check_waitingfordt)(void *pvt);
229 void (* const set_confirmanswer)(void *pvt, int flag);
230 int (* const check_confirmanswer)(void *pvt);
231 void (* const set_callwaiting)(void *pvt, int callwaiting_enable);
232 void (* const cancel_cidspill)(void *pvt);
233 int (* const confmute)(void *pvt, int mute);
234 void (* const set_pulsedial)(void *pvt, int flag);
235 void (* const set_new_owner)(void *pvt, struct ast_channel *new_owner);
237 const char *(* const get_orig_dialstring)(void *pvt);
242 struct analog_subchannel {
243 struct ast_channel *owner;
244 struct ast_frame f; /*!< One frame for each channel. How did this ever work before? */
245 unsigned int inthreeway:1;
246 /* Have we allocated a subchannel yet or not */
247 unsigned int allocd:1;
251 /* Analog signalling type used in this private */
252 enum analog_sigtype sig;
253 /* To contain the private structure passed into the channel callbacks */
255 /* Callbacks for various functions needed by the analog API */
256 struct analog_callback *calls;
257 /* All members after this are giong to be transient, and most will probably change */
258 struct ast_channel *owner; /*!< Our current active owner (if applicable) */
260 struct analog_subchannel subs[3]; /*!< Sub-channels */
261 struct analog_dialoperation dop;
262 int onhooktime; /*< Time the interface went on-hook. */
263 int fxsoffhookstate; /*< TRUE if the FXS port is off-hook */
264 /*! \brief -1 = unknown, 0 = no messages, 1 = new messages available */
267 /* XXX: Option Variables - Set by allocator of private structure */
268 unsigned int answeronpolarityswitch:1;
269 unsigned int callreturn:1;
270 unsigned int cancallforward:1;
271 unsigned int canpark:1;
272 unsigned int dahditrcallerid:1; /*!< should we use the callerid from incoming call on dahdi transfer or not */
273 unsigned int hanguponpolarityswitch:1;
274 unsigned int immediate:1;
275 unsigned int permcallwaiting:1; /*!< TRUE if call waiting is enabled. (Configured option) */
276 unsigned int permhidecallerid:1; /*!< Whether to hide our outgoing caller ID or not */
277 unsigned int pulse:1;
278 unsigned int threewaycalling:1;
279 unsigned int transfer:1;
280 unsigned int transfertobusy:1; /*!< allow flash-transfers to busy channels */
281 unsigned int use_callerid:1; /*!< Whether or not to use caller id on this channel */
282 unsigned int callwaitingcallerid:1; /*!< TRUE if send caller ID for Call Waiting */
284 * \brief TRUE if SMDI (Simplified Message Desk Interface) is enabled
286 unsigned int use_smdi:1;
287 /*! \brief The SMDI interface to get SMDI messages from. */
288 struct ast_smdi_interface *smdi_iface;
289 const struct ast_channel_tech *chan_tech;
291 /* Not used for anything but log messages. Could be just the TCID */
292 int channel; /*!< Channel Number */
294 enum analog_sigtype outsigmod;
296 int cid_signalling; /*!< Asterisk callerid type we're using */
297 int polarityonanswerdelay;
299 enum analog_cid_start cid_start;
300 char mohsuggest[MAX_MUSICCLASS];
301 char cid_num[AST_MAX_EXTENSION];
302 char cid_name[AST_MAX_EXTENSION];
305 /* XXX: All variables after this are internal */
306 unsigned int callwaiting:1; /*!< TRUE if call waiting is enabled. (Active option) */
307 unsigned int dialednone:1;
308 unsigned int dialing:1; /*!< TRUE if in the process of dialing digits or sending something */
309 unsigned int dnd:1; /*!< TRUE if Do-Not-Disturb is enabled. */
310 unsigned int echobreak:1;
311 unsigned int hidecallerid:1;
312 unsigned int outgoing:1;
313 unsigned int inalarm:1;
315 * \brief TRUE if Call Waiting (CW) CPE Alert Signal (CAS) is being sent.
317 * After CAS is sent, the call waiting caller id will be sent if the phone
318 * gives a positive reply.
320 unsigned int callwaitcas:1;
322 char callwait_num[AST_MAX_EXTENSION];
323 char callwait_name[AST_MAX_EXTENSION];
324 char lastcid_num[AST_MAX_EXTENSION];
325 char lastcid_name[AST_MAX_EXTENSION];
326 struct ast_party_caller caller;
327 int cidrings; /*!< Which ring to deliver CID on */
330 struct timeval polaritydelaytv;
332 time_t guardtime; /*!< Must wait this much time before using for new call */
333 struct timeval flashtime; /*!< Last flash-hook time */
334 int whichwink; /*!< SIG_FEATDMF_TA Which wink are we on? */
336 char *origcid_num; /*!< malloced original callerid */
337 char *origcid_name; /*!< malloced original callerid */
338 char call_forward[AST_MAX_EXTENSION];
340 /* Ast channel to pass to __ss_analog_thread */
341 struct ast_channel *ss_astchan;
343 /* All variables after this are definitely going to be audited */
348 struct analog_pvt *analog_new(enum analog_sigtype signallingtype, struct analog_callback *c, void *private_data);
349 void analog_delete(struct analog_pvt *doomed);
351 void analog_free(struct analog_pvt *p);
353 int analog_call(struct analog_pvt *p, struct ast_channel *ast, char *rdest, int timeout);
355 int analog_hangup(struct analog_pvt *p, struct ast_channel *ast);
357 int analog_answer(struct analog_pvt *p, struct ast_channel *ast);
359 struct ast_frame *analog_exception(struct analog_pvt *p, struct ast_channel *ast);
361 struct ast_channel * analog_request(struct analog_pvt *p, int *callwait, const struct ast_channel *requestor);
363 int analog_available(struct analog_pvt *p);
365 void *analog_handle_init_event(struct analog_pvt *i, int event);
367 int analog_config_complete(struct analog_pvt *p);
369 void analog_handle_dtmf(struct analog_pvt *p, struct ast_channel *ast, enum analog_sub index, struct ast_frame **dest);
371 enum analog_cid_start analog_str_to_cidstart(const char *value);
373 const char *analog_cidstart_to_str(enum analog_cid_start cid_start);
375 enum analog_sigtype analog_str_to_sigtype(const char *name);
377 const char *analog_sigtype_to_str(enum analog_sigtype sigtype);
379 unsigned int analog_str_to_cidtype(const char *name);
381 const char *analog_cidtype_to_str(unsigned int cid_type);
383 int analog_ss_thread_start(struct analog_pvt *p, struct ast_channel *ast);
385 int analog_fixup(struct ast_channel *oldchan, struct ast_channel *newchan, void *newp);
387 int analog_dnd(struct analog_pvt *p, int flag);
389 #endif /* _SIG_ANSLOG_H */