/ fixed an inverted test
[asterisk/asterisk.git] / channels / chan_vpb.c
1 /*
2  * Asterisk -- A telephony toolkit for Linux.
3  *
4  * VoiceTronix Interface driver
5  * 
6  * Copyright (C) 2003, Paul Bagyenda
7  * Paul Bagyenda <bagyenda@dsmagic.com>
8  * Copyright (C) 2004 - 2005, Ben Kramer
9  * Ben Kramer <ben@voicetronix.com.au>
10  *
11  * Daniel Bichara <daniel@bichara.com.br> - Brazilian CallerID detection (c)2004 
12  *
13  * Welber Silveira - welberms@magiclink.com.br - (c)2004
14  * Copying CLID string to propper structure after detection
15  *
16  * This program is free software, distributed under the terms of
17  * the GNU General Public License
18  */
19
20
21 extern "C" {
22
23 #include <stdio.h>
24 #include <string.h>
25 #include <asterisk/lock.h>
26 #include <asterisk/utils.h>
27 #include <asterisk/channel.h>
28 #include <asterisk/config.h>
29 #include <asterisk/logger.h>
30 #include <asterisk/module.h>
31 #include <asterisk/pbx.h>
32 #include <asterisk/options.h>
33 #include <asterisk/callerid.h>
34 #include <asterisk/dsp.h>
35 #include <asterisk/features.h>
36
37 }
38
39 #include <sys/socket.h>
40 #include <sys/time.h>
41 #include <errno.h>
42 #include <unistd.h>
43 #include <stdlib.h>
44 #include <arpa/inet.h>
45 #include <fcntl.h>
46 #include <sys/ioctl.h>
47 #include <ctype.h>
48
49 #include <vpbapi.h>
50 #include <assert.h>
51
52 #ifdef pthread_create
53 #undef pthread_create
54 #endif
55
56 #define DEFAULT_GAIN 0
57 #define DEFAULT_ECHO_CANCEL 1
58   
59 #define VPB_SAMPLES 160 
60 #define VPB_MAX_BUF VPB_SAMPLES*4 + AST_FRIENDLY_OFFSET
61
62 #define VPB_NULL_EVENT 200
63
64 #define VPB_WAIT_TIMEOUT 4000
65
66 #define MAX_VPB_GAIN 12.0
67 #define MIN_VPB_GAIN -12.0
68
69 #define DTMF_CALLERID  
70 #define DTMF_CID_START 'D'
71 #define DTMF_CID_STOP 'C'
72
73 /**/
74 #if defined(__cplusplus) || defined(c_plusplus)
75  extern "C" {
76 #endif
77 /**/
78
79 static const char desc[] = "VoiceTronix V6PCI/V12PCI/V4PCI  API Support";
80 static const char type[] = "vpb";
81 static const char tdesc[] = "Standard VoiceTronix API Driver";
82 static const char config[] = "vpb.conf";
83
84 /* Default context for dialtone mode */
85 static char context[AST_MAX_EXTENSION] = "default";
86
87 /* Default language */
88 static char language[MAX_LANGUAGE] = "";
89 static int usecnt =0;
90
91 static int gruntdetect_timeout = 3600000; /* Grunt detect timeout is 1hr. */
92
93 static const int prefformat = AST_FORMAT_SLINEAR;
94
95 AST_MUTEX_DEFINE_STATIC(usecnt_lock);
96
97 /* Protect the interface list (of vpb_pvt's) */
98 AST_MUTEX_DEFINE_STATIC(iflock);
99
100 /* Protect the monitoring thread, so only one process can kill or start it, and not
101    when it's doing something critical. */
102 AST_MUTEX_DEFINE_STATIC(monlock);
103
104 /* This is the thread for the monitor which checks for input on the channels
105    which are not currently in use.  */
106 static pthread_t monitor_thread;
107
108 static int mthreadactive = -1; /* Flag for monitoring monitorthread.*/
109
110
111 static int restart_monitor(void);
112
113 /* The private structures of the VPB channels are 
114    linked for selecting outgoing channels */
115    
116 #define MODE_DIALTONE   1
117 #define MODE_IMMEDIATE  2
118 #define MODE_FXO        3
119
120 /* Pick a country or add your own! */
121 /* These are the tones that are played to the user */
122 #define TONES_AU
123 /* #define TONES_USA */
124
125 #ifdef TONES_AU
126 static VPB_TONE Dialtone     = {440,    440,    440,    -10,    -10,    -10,    5000,   0   };
127 static VPB_TONE Busytone     = {470,    0,      0,      -10,    -100,   -100,   5000,   0 };
128 static VPB_TONE Ringbacktone = {400,    50,     440,    -10,    -10,    -10,    1400,   800 };
129 #endif
130 #ifdef TONES_USA
131 static VPB_TONE Dialtone     = {350, 440,   0, -16,   -16, -100, 10000,    0};
132 static VPB_TONE Busytone     = {480, 620,   0, -10,   -10, -100,   500,  500};
133 static VPB_TONE Ringbacktone = {440, 480,   0, -20,   -20, -100,  2000, 4000};
134 #endif
135
136 /* grunt tone defn's */
137 static VPB_DETECT toned_grunt = { 3, VPB_GRUNT, 1, 2000, 3000, 0, 0, -40, 0, 0, 0, 40, { { VPB_DELAY, 1000, 0, 0 }, { VPB_RISING, 0, 40, 0 }, { 0, 100, 0, 0 } } };
138 static VPB_DETECT toned_ungrunt = { 2, VPB_GRUNT, 1, 2000, 1, 0, 0, -40, 0, 0, 30, 40, { { 0, 0, 0, 0 } } };
139
140 /* Use loop drop detection */
141 static int UseLoopDrop=1;
142
143 /* To use or not to use Native bridging */
144 static int UseNativeBridge=1;
145
146 /* Use Asterisk Indication or VPB */
147 static int use_ast_ind=0;
148
149 /* Use Asterisk DTMF detection or VPB */
150 static int use_ast_dtmfdet=0;
151
152 static int relaxdtmf=0;
153
154 /* Use Asterisk DTMF play back or VPB */
155 static int use_ast_dtmf=0;
156
157 /* Break for DTMF on native bridge ? */
158 static int break_for_dtmf=1;
159
160 /* Set EC suppression threshold */
161 static int ec_supp_threshold=-1;
162
163 /* Inter Digit Delay for collecting DTMF's */
164 static int dtmf_idd = 3000;
165
166 #define TIMER_PERIOD_RINGBACK 2000
167 #define TIMER_PERIOD_BUSY 700
168 #define TIMER_PERIOD_RING 4000
169           
170 #define VPB_EVENTS_ALL (VPB_MRING|VPB_MDIGIT|VPB_MDTMF|VPB_MTONEDETECT|VPB_MTIMEREXP|VPB_MPLAY_UNDERFLOW \
171                         |VPB_MRECORD_OVERFLOW|VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
172                         |VPB_MRING_OFF|VPB_MDROP|VPB_MSTATION_FLASH)
173 #define VPB_EVENTS_NODROP (VPB_MRING|VPB_MDIGIT|VPB_MDTMF|VPB_MTONEDETECT|VPB_MTIMEREXP|VPB_MPLAY_UNDERFLOW \
174                         |VPB_MRECORD_OVERFLOW|VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
175                         |VPB_MRING_OFF|VPB_MSTATION_FLASH)
176 #define VPB_EVENTS_NODTMF (VPB_MRING|VPB_MDIGIT|VPB_MTONEDETECT|VPB_MTIMEREXP|VPB_MPLAY_UNDERFLOW \
177                         |VPB_MRECORD_OVERFLOW|VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
178                         |VPB_MRING_OFF|VPB_MDROP|VPB_MSTATION_FLASH)
179 #define VPB_EVENTS_STAT (VPB_MRING|VPB_MDIGIT|VPB_MDTMF|VPB_MTONEDETECT|VPB_MTIMEREXP|VPB_MPLAY_UNDERFLOW \
180                         |VPB_MRECORD_OVERFLOW|VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
181                         |VPB_MRING_OFF|VPB_MSTATION_FLASH)
182
183
184 /* Dialing parameters for Australia */
185 /* #define DIAL_WITH_CALL_PROGRESS */
186 VPB_TONE_MAP DialToneMap[] = {  { VPB_BUSY_AUST, VPB_CALL_DISCONNECT, 0 },
187                                 { VPB_DIAL, VPB_CALL_DIALTONE, 0 },
188                                 { VPB_RINGBACK_308, VPB_CALL_RINGBACK, 0 },
189                                 { VPB_BUSY_AUST, VPB_CALL_BUSY, 0 },
190                                 { VPB_GRUNT, VPB_CALL_GRUNT, 0 },
191                                 { 0, 0, 1 } };
192 #define VPB_DIALTONE_WAIT 2000 /* Wait up to 2s for a dialtone */
193 #define VPB_RINGWAIT 4000 /* Wait up to 4s for ring tone after dialing */
194 #define VPB_CONNECTED_WAIT 4000 /* If no ring tone detected for 4s then consider call connected */
195 #define TIMER_PERIOD_NOANSWER 120000 /* Let it ring for 120s before deciding theres noone there */
196
197 #define MAX_BRIDGES_V4PCI 2
198 #define MAX_BRIDGES_V12PCI 128
199
200 /* port states */
201 #define VPB_STATE_ONHOOK        0
202 #define VPB_STATE_OFFHOOK       1
203 #define VPB_STATE_DIALLING      2
204 #define VPB_STATE_JOINED        3
205 #define VPB_STATE_GETDTMF       4
206 #define VPB_STATE_PLAYDIAL      5
207 #define VPB_STATE_PLAYBUSY      6
208 #define VPB_STATE_PLAYRING      7
209
210 #define VPB_GOT_RXHWG           1
211 #define VPB_GOT_TXHWG           2
212 #define VPB_GOT_RXSWG           4
213 #define VPB_GOT_TXSWG           8
214
215 typedef struct  {
216         int inuse;
217         struct ast_channel *c0, *c1, **rc;
218         struct ast_frame **fo;
219         int flags;
220         ast_mutex_t lock;
221         pthread_cond_t cond;
222         int endbridge;
223 } vpb_bridge_t;
224
225 static vpb_bridge_t * bridges;
226 static int max_bridges = MAX_BRIDGES_V4PCI;
227
228 AST_MUTEX_DEFINE_STATIC(bridge_lock);
229
230 typedef enum {
231         vpb_model_unknown = 0, 
232         vpb_model_v4pci,
233         vpb_model_v12pci
234 } vpb_model_t;
235
236 static struct vpb_pvt {
237
238         ast_mutex_t owner_lock;                 /* Protect blocks that expect ownership to remain the same */
239         struct ast_channel *owner;              /* Channel who owns us, possibly NULL */
240
241         int golock;                             /* Got owner lock ? */
242
243         int mode;                               /* fxo/imediate/dialtone*/
244         int handle;                             /* Handle for vpb interface */
245
246         int state;                              /* used to keep port state (internal to driver) */
247
248         int group;                              /* Which group this port belongs to */
249         ast_group_t callgroup;                  /* Call group */
250         ast_group_t pickupgroup;                /* Pickup group */
251
252
253         char dev[256];                          /* Device name, eg vpb/1-1 */
254         vpb_model_t vpb_model;                  /* card model */
255
256         struct ast_frame f, fr;                 /* Asterisk frame interface */
257         char buf[VPB_MAX_BUF];                  /* Static buffer for reading frames */
258
259         int dialtone;                           /* NOT USED */
260         float txgain, rxgain;                   /* Hardware gain control */
261         float txswgain, rxswgain;               /* Software gain control */
262
263         int wantdtmf;                           /* Waiting for DTMF. */
264         char context[AST_MAX_EXTENSION];        /* The context for this channel */
265
266         char ext[AST_MAX_EXTENSION];            /* DTMF buffer for the ext[ens] */
267         char language[MAX_LANGUAGE];            /* language being used */
268         char callerid[AST_MAX_EXTENSION];       /* CallerId used for directly connected phone */
269         int  callerid_type;                     /* Caller ID type: 0=>none 1=>vpb 2=>AstV23 3=>AstBell */
270
271         int dtmf_caller_pos;                    /* DTMF CallerID detection (Brazil)*/
272
273         int lastoutput;                         /* Holds the last Audio format output'ed */
274         int lastinput;                          /* Holds the last Audio format input'ed */
275         int last_ignore_dtmf;
276
277         void *busy_timer;                       /* Void pointer for busy vpb_timer */
278         int busy_timer_id;                      /* unique timer ID for busy timer */
279
280         void *ringback_timer;                   /* Void pointer for ringback vpb_timer */
281         int ringback_timer_id;                  /* unique timer ID for ringback timer */
282
283         void *ring_timer;                       /* Void pointer for ring vpb_timer */
284         int ring_timer_id;                      /* unique timer ID for ring timer */
285
286         void *dtmfidd_timer;                    /* Void pointer for DTMF IDD vpb_timer */
287         int dtmfidd_timer_id;                   /* unique timer ID for DTMF IDD timer */
288
289         struct ast_dsp *vad;                    /* AST  Voice Activation Detection dsp */
290
291         double lastgrunt;                       /* time stamp (secs since epoc) of last grunt event */
292
293         ast_mutex_t lock;                       /* This one just protects bridge ptr below */
294         vpb_bridge_t *bridge;
295
296         int stopreads;                          /* Stop reading...*/
297         int read_state;                         /* Read state */
298         int chuck_count;                        /* a count of packets weve chucked away!*/
299         pthread_t readthread;                   /* For monitoring read channel. One per owned channel. */
300
301         ast_mutex_t record_lock;                /* This one prevents reentering a record_buf block */
302         ast_mutex_t play_lock;                  /* This one prevents reentering a play_buf block */
303         int  play_buf_time;                     /* How long the last play_buf took */
304
305         ast_mutex_t play_dtmf_lock;
306         char play_dtmf[16];
307
308         int faxhandled;                         /* has a fax tone been handled ? */
309
310         struct vpb_pvt *next;                   /* Next channel in list */
311
312 } *iflist = NULL;
313
314 static struct ast_channel *vpb_new(struct vpb_pvt *i, int state, char *context);
315 static void *do_chanreads(void *pvt);
316
317 static struct ast_channel *vpb_request(const char *type, int format, void *data, int *cause);
318 static int vpb_digit(struct ast_channel *ast, char digit);
319 static int vpb_call(struct ast_channel *ast, char *dest, int timeout);
320 static int vpb_hangup(struct ast_channel *ast);
321 static int vpb_answer(struct ast_channel *ast);
322 static struct ast_frame *vpb_read(struct ast_channel *ast);
323 static int vpb_write(struct ast_channel *ast, struct ast_frame *frame);
324 static int vpb_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc);
325 static int vpb_indicate(struct ast_channel *ast, int condition);
326 static int vpb_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
327
328 static const struct ast_channel_tech vpb_tech = {
329         type: type,
330         description: tdesc,
331         capabilities: AST_FORMAT_SLINEAR,
332         properties: NULL,
333         requester: vpb_request,
334         devicestate: NULL,
335         send_digit: vpb_digit,
336         call: vpb_call,
337         hangup: vpb_hangup,
338         answer: vpb_answer,
339         read: vpb_read,
340         write: vpb_write,
341         send_text: NULL,
342         send_image: NULL,
343         send_html: NULL,
344         exception: NULL,
345         bridge: vpb_bridge,
346         indicate: vpb_indicate,
347         fixup: vpb_fixup,
348         setoption: NULL,
349         queryoption: NULL,
350         transfer: NULL,
351         write_video: NULL,
352         bridged_channel: NULL
353 };
354
355 /* Can't get vpb_bridge() working on v4pci without either a horrible 
356 *  high pitched feedback noise or bad hiss noise depending on gain settings
357 *  Get asterisk to do the bridging
358 */
359 #define BAD_V4PCI_BRIDGE
360
361 /* This one enables a half duplex bridge which may be required to prevent high pitched
362  * feedback when getting asterisk to do the bridging and when using certain gain settings.
363  */
364 /* #define HALF_DUPLEX_BRIDGE */
365
366 /* This is the Native bridge code, which Asterisk will try before using its own bridging code */
367 static int vpb_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc)
368 {
369         struct vpb_pvt *p0 = (struct vpb_pvt *)c0->tech_pvt;
370         struct vpb_pvt *p1 = (struct vpb_pvt *)c1->tech_pvt;
371         int i, res;
372
373         struct ast_channel *cs[3];
374         struct ast_channel *who;
375         int to = -1;
376         struct ast_frame *f;
377
378         cs[0] = c0;
379         cs[1] = c1;
380
381         #ifdef BAD_V4PCI_BRIDGE
382         if(p0->vpb_model==vpb_model_v4pci)
383                 return -2;
384         #endif
385         if ( UseNativeBridge != 1){
386                 return -2;
387         }
388
389 /*
390         ast_mutex_lock(&p0->lock);
391         ast_mutex_lock(&p1->lock);
392 */
393
394         /* Bridge channels, check if we can.  I believe we always can, so find a slot.*/
395
396         ast_mutex_lock(&bridge_lock); {
397                 for (i = 0; i < max_bridges; i++) 
398                         if (!bridges[i].inuse)
399                                 break;
400                 if (i < max_bridges) {
401                         bridges[i].inuse = 1;
402                         bridges[i].endbridge = 0;
403                         bridges[i].flags = flags;
404                         bridges[i].rc = rc;
405                         bridges[i].fo = fo;
406                         bridges[i].c0 = c0;
407                         bridges[i].c1 = c1;
408                 }              
409         } ast_mutex_unlock(&bridge_lock); 
410
411         if (i == max_bridges) {
412                 ast_log(LOG_WARNING, "%s: vpb_bridge: Failed to bridge %s and %s!\n", p0->dev, c0->name, c1->name);
413                 ast_mutex_unlock(&p0->lock);
414                 ast_mutex_unlock(&p1->lock);
415                 return -2;
416         } else {
417                 /* Set bridge pointers. You don't want to take these locks while holding bridge lock.*/
418                 ast_mutex_lock(&p0->lock); {
419                         p0->bridge = &bridges[i];
420                 } ast_mutex_unlock(&p0->lock);
421
422                 ast_mutex_lock(&p1->lock); {
423                         p1->bridge = &bridges[i];
424                 } ast_mutex_unlock(&p1->lock);
425
426                 if (option_verbose>1) 
427                         ast_verbose(VERBOSE_PREFIX_2 "%s: vpb_bridge: Bridging call entered with [%s, %s]\n",p0->dev, c0->name, c1->name);
428         }
429
430         #ifdef HALF_DUPLEX_BRIDGE
431
432         if (option_verbose>1) 
433                 ast_verbose(VERBOSE_PREFIX_2 "%s: vpb_bridge: Starting half-duplex bridge [%s, %s]\n",p0->dev, c0->name, c1->name);
434
435         int dir = 0;
436
437         memset(p0->buf, 0, sizeof p0->buf);
438         memset(p1->buf, 0, sizeof p1->buf);
439
440         vpb_record_buf_start(p0->handle, VPB_ALAW);
441         vpb_record_buf_start(p1->handle, VPB_ALAW);
442
443         vpb_play_buf_start(p0->handle, VPB_ALAW);
444         vpb_play_buf_start(p1->handle, VPB_ALAW);
445
446         while( !bridges[i].endbridge ) {
447                 struct vpb_pvt *from, *to;
448                 if(++dir%2) {
449                         from = p0;
450                         to = p1;
451                 } else {
452                         from = p1;
453                         to = p0;
454                 }
455                 vpb_record_buf_sync(from->handle, from->buf, VPB_SAMPLES);
456                 vpb_play_buf_sync(to->handle, from->buf, VPB_SAMPLES);
457         }
458
459         vpb_record_buf_finish(p0->handle);
460         vpb_record_buf_finish(p1->handle);
461
462         vpb_play_buf_finish(p0->handle);
463         vpb_play_buf_finish(p1->handle);
464
465         if (option_verbose>1) 
466                 ast_verbose(VERBOSE_PREFIX_2 "%s: vpb_bridge: Finished half-duplex bridge [%s, %s]\n",p0->dev, c0->name, c1->name);
467
468         res = VPB_OK;
469
470         #else
471
472         res = vpb_bridge(p0->handle, p1->handle, VPB_BRIDGE_ON, i+1 /* resource 1 & 2 only for V4PCI*/ );
473         if (res == VPB_OK) {
474                 /* pthread_cond_wait(&bridges[i].cond, &bridges[i].lock);*/ /* Wait for condition signal. */
475                 while( !bridges[i].endbridge ) {
476                         /* Are we really ment to be doing nothing ?!?! */
477                         who = ast_waitfor_n(cs, 2, &to);
478                         if (!who) {
479                                 ast_log(LOG_DEBUG, "%s: vpb_bridge: Empty frame read...\n",p0->dev);
480                                 /* check for hangup / whentohangup */
481                                 if (ast_check_hangup(c0) || ast_check_hangup(c1))
482                                         break;
483                                 continue;
484                         }
485                         f = ast_read(who);
486                         if (!f || ((f->frametype == AST_FRAME_DTMF) &&
487                                            (((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) || 
488                                        ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1))))) {
489                                 *fo = f;
490                                 *rc = who;
491                                 ast_log(LOG_DEBUG, "%s: vpb_bridge: Got a [%s]\n",p0->dev, f ? "digit" : "hangup");
492 /*
493                                 if ((c0->tech_pvt == pvt0) && (!c0->_softhangup)) {
494                                         if (pr0->set_rtp_peer(c0, NULL, NULL, 0)) 
495                                                 ast_log(LOG_WARNING, "Channel '%s' failed to revert\n", c0->name);
496                                 }
497                                 if ((c1->tech_pvt == pvt1) && (!c1->_softhangup)) {
498                                         if (pr1->set_rtp_peer(c1, NULL, NULL, 0)) 
499                                                 ast_log(LOG_WARNING, "Channel '%s' failed to revert back\n", c1->name);
500                                 }
501 */
502                                 /* That's all we needed */
503                                 /*return 0; */
504                                 /* Check if we need to break */
505                                 if (break_for_dtmf){
506                                         break;
507                                 }
508                                 else if ((f->frametype == AST_FRAME_DTMF) && ((f->subclass == '#')||(f->subclass == '*'))){
509                                         break;
510                                 }
511                         } else {
512                                 if ((f->frametype == AST_FRAME_DTMF) || 
513                                         (f->frametype == AST_FRAME_VOICE) || 
514                                         (f->frametype == AST_FRAME_VIDEO)) 
515                                         {
516                                         /* Forward voice or DTMF frames if they happen upon us */
517                                         /* Actually I dont think we want to forward on any frames!
518                                         if (who == c0) {
519                                                 ast_write(c1, f);
520                                         } else if (who == c1) {
521                                                 ast_write(c0, f);
522                                         }
523                                         */
524                                 }
525                                 ast_frfree(f);
526                         }
527                         /* Swap priority not that it's a big deal at this point */
528                         cs[2] = cs[0];
529                         cs[0] = cs[1];
530                         cs[1] = cs[2];
531                 };
532                 vpb_bridge(p0->handle, p1->handle, VPB_BRIDGE_OFF, i+1 /* resource 1 & 2 only for V4PCI*/ ); 
533         }
534
535         #endif
536
537         ast_mutex_lock(&bridge_lock); {
538                 bridges[i].inuse = 0;
539         } ast_mutex_unlock(&bridge_lock); 
540
541         p0->bridge = NULL;
542         p1->bridge = NULL;
543
544
545         if (option_verbose>1) 
546                 ast_verbose(VERBOSE_PREFIX_2 "Bridging call done with [%s, %s] => %d\n", c0->name, c1->name, res);
547
548 /*
549         ast_mutex_unlock(&p0->lock);
550         ast_mutex_unlock(&p1->lock);
551 */
552         return (res==VPB_OK)?0:-1;
553 }
554
555 static double get_time_in_ms()
556 {
557         struct timeval tv;
558         gettimeofday(&tv, NULL);
559         return ((double)tv.tv_sec*1000)+((double)tv.tv_usec/1000);
560 }
561
562 /* Caller ID can be located in different positions between the rings depending on your Telco
563  * Australian (Telstra) callerid starts 700ms after 1st ring and finishes 1.5s after first ring
564  * Use ANALYSE_CID to record rings and determine location of callerid
565  */
566 /* #define ANALYSE_CID */
567 #define RING_SKIP 300
568 #define CID_MSECS 2000
569
570 static void get_callerid(struct vpb_pvt *p)
571 {
572         short buf[CID_MSECS*8]; /* 8kHz sampling rate */
573         double cid_record_time;
574         int rc;
575         struct ast_channel *owner = p->owner;
576         void * ws;
577         char * file="cidsams.wav";
578
579
580         if( ast_mutex_trylock(&p->record_lock) == 0 ) {
581
582                 char callerid[AST_MAX_EXTENSION] = ""; 
583
584                 cid_record_time = get_time_in_ms();
585                 if (option_verbose>3) 
586                         ast_verbose(VERBOSE_PREFIX_4 "CID record - start\n");
587
588                 /* Skip any trailing ringtone */
589                 vpb_sleep(RING_SKIP);
590
591                 if (option_verbose>3) 
592                         ast_verbose(VERBOSE_PREFIX_4 "CID record - skipped %fms trailing ring\n",
593                                  get_time_in_ms() - cid_record_time);
594                 cid_record_time = get_time_in_ms();
595
596                 /* Record bit between the rings which contains the callerid */
597                 vpb_record_buf_start(p->handle, VPB_LINEAR);
598                 rc = vpb_record_buf_sync(p->handle, (char*)buf, sizeof(buf));
599                 vpb_record_buf_finish(p->handle);
600 #ifdef ANALYSE_CID
601                 vpb_wave_open_write(&ws, file, VPB_LINEAR);
602                 vpb_wave_write(ws,(char*)buf,sizeof(buf));
603                 vpb_wave_close_write(ws);
604 #endif
605
606                 if (option_verbose>3) 
607                         ast_verbose(VERBOSE_PREFIX_4 "CID record - recorded %fms between rings\n", 
608                                 get_time_in_ms() - cid_record_time);
609
610                 ast_mutex_unlock(&p->record_lock);
611
612                 if( rc != VPB_OK ) {
613                         ast_log(LOG_ERROR, "Failed to record caller id sample on %s\n", p->dev );
614                         return;
615                 }
616
617                 VPB_CID *cli_struct = new VPB_CID;
618                 cli_struct->ra_cldn[0]=0;
619                 cli_struct->ra_cn[0]=0;
620                 /* This decodes FSK 1200baud type callerid */
621                 if ((rc=vpb_cid_decode2(cli_struct, buf, CID_MSECS*8)) == VPB_OK ) {
622                         /*
623                         if (owner->cid.cid_num)
624                                 free(owner->cid.cid_num);
625                         owner->cid.cid_num=NULL;
626                         if (owner->cid.cid_name)
627                                 free(owner->cid.cid_name);
628                         owner->cid.cid_name=NULL;
629                         */
630                         
631                         if (cli_struct->ra_cldn[0]=='\0'){
632                                 /*
633                                 owner->cid.cid_num = strdup(cli_struct->cldn);
634                                 owner->cid.cid_name = strdup(cli_struct->cn);
635                                 */
636                                 ast_set_callerid(owner, cli_struct->cldn, cli_struct->cn, cli_struct->cldn);
637                                 if (option_verbose>3) 
638                                         ast_verbose(VERBOSE_PREFIX_4 "CID record - got [%s] [%s]\n",owner->cid.cid_num,owner->cid.cid_name );
639                                 snprintf(p->callerid,sizeof(p->callerid)-1,"%s %s",cli_struct->cldn,cli_struct->cn);
640                         }
641                         else {
642                                 ast_log(LOG_ERROR,"CID record - No caller id avalable on %s \n", p->dev);
643                         }
644
645                 } else {
646                         ast_log(LOG_ERROR, "CID record - Failed to decode caller id on %s - %s\n", p->dev, vpb_strerror(rc) );
647                         strncpy(p->callerid,"unknown", sizeof(p->callerid) - 1);
648                 }
649                 delete cli_struct;
650
651         } else 
652                 ast_log(LOG_ERROR, "CID record - Failed to set record mode for caller id on %s\n", p->dev );
653 }
654
655 static void get_callerid_ast(struct vpb_pvt *p)
656 {
657         struct callerid_state *cs;
658         char buf[1024];
659         char *name=NULL, *number=NULL;
660         int flags;
661         int rc=0,vrc;
662         int sam_count=0;
663         struct ast_channel *owner = p->owner;
664         float old_gain;
665         int which_cid;
666         void * ws;
667         char * file="cidsams.wav";
668
669         if(p->callerid_type == 1) {
670         if (option_verbose>3) ast_verbose(VERBOSE_PREFIX_4 "Collected caller ID already\n");
671                 return;
672         }
673         else if(p->callerid_type == 2 ) {
674                 which_cid=CID_SIG_V23;
675         if (option_verbose>3) ast_verbose(VERBOSE_PREFIX_4 "Collecting Caller ID v23...\n");
676         }
677         else if(p->callerid_type == 3) {
678                 which_cid=CID_SIG_BELL;
679         if (option_verbose>3) ast_verbose(VERBOSE_PREFIX_4 "Collecting Caller ID bell...\n");
680         }
681         else {
682                 if (option_verbose>3) 
683                         ast_verbose(VERBOSE_PREFIX_4 "Caller ID disabled\n");
684                 return;
685         }
686 /*      vpb_sleep(RING_SKIP); */
687 /*      vpb_record_get_gain(p->handle, &old_gain); */
688         cs = callerid_new(which_cid);
689         if (cs){
690 #ifdef ANALYSE_CID
691                 vpb_wave_open_write(&ws, file, VPB_MULAW); 
692                 vpb_record_set_gain(p->handle, 3.0); 
693                 vpb_record_set_hw_gain(p->handle,12.0); 
694 #endif
695                 vpb_record_buf_start(p->handle, VPB_MULAW);
696                 while((rc == 0)&&(sam_count<8000*3)){
697                         vrc = vpb_record_buf_sync(p->handle, (char*)buf, sizeof(buf));
698                         if (vrc != VPB_OK)
699                                 ast_log(LOG_ERROR, "%s: Caller ID couldnt read audio buffer!\n",p->dev);
700                         rc = callerid_feed(cs,(unsigned char *)buf,sizeof(buf),AST_FORMAT_ULAW);
701 #ifdef ANALYSE_CID
702                         vpb_wave_write(ws,(char*)buf,sizeof(buf)); 
703 #endif
704                         sam_count+=sizeof(buf);
705                         if (option_verbose>3) ast_verbose(VERBOSE_PREFIX_4 "Collecting Caller ID samples [%d][%d]...\n",sam_count,rc);
706                 }
707                 vpb_record_buf_finish(p->handle);
708 #ifdef ANALYSE_CID
709                 vpb_wave_close_write(ws); 
710 #endif
711                 if (rc == 1){
712                         callerid_get(cs, &name, &number, &flags);
713                         if (option_verbose>0) 
714                                 ast_verbose(VERBOSE_PREFIX_1 "%s: Caller ID name [%s] number [%s] flags [%d]\n",p->dev,name, number,flags);
715                 }
716                 else {
717                         ast_log(LOG_ERROR, "%s: Failed to decode Caller ID \n", p->dev );
718                 }
719 /*              vpb_record_set_gain(p->handle, old_gain); */
720 /*              vpb_record_set_hw_gain(p->handle,6.0); */
721         }
722         else {
723                 ast_log(LOG_ERROR, "%s: Failed to create Caller ID struct\n", p->dev );
724         }
725         if (owner->cid.cid_num) {
726                 free(owner->cid.cid_num);
727                 owner->cid.cid_num = NULL;
728         }
729         if (owner->cid.cid_name) {
730                 free(owner->cid.cid_name);
731                 owner->cid.cid_name = NULL;
732         }
733         if (number)
734                 ast_shrink_phone_number(number);
735         if (number && !ast_strlen_zero(number)) {
736                 owner->cid.cid_num = strdup(number);
737                 owner->cid.cid_ani = strdup(number);
738                 if (name && !ast_strlen_zero(name)){
739                         owner->cid.cid_name = strdup(name);
740                         snprintf(p->callerid,(sizeof(p->callerid)-1),"%s %s",number,name);
741                 }
742                 else {
743                         snprintf(p->callerid,(sizeof(p->callerid)-1),"%s",number);
744                 }
745         }
746                                                                                                                      
747         if (cs)
748                 callerid_free(cs);
749 }
750
751 /* Terminate any tones we are presently playing */
752 static void stoptone( int handle)
753 {
754         int ret;
755         VPB_EVENT je;
756         while(vpb_playtone_state(handle)!=VPB_OK){
757                 vpb_tone_terminate(handle);
758                 ret = vpb_get_event_ch_async(handle,&je);
759                 if ((ret == VPB_OK)&&(je.type != VPB_DIALEND)){
760                         if (option_verbose > 3){
761                                         ast_verbose(VERBOSE_PREFIX_4 "Stop tone collected a wrong event!![%d]\n",je.type);
762                         }
763 /*                      vpb_put_event(&je); */
764                 }
765                 vpb_sleep(10);
766         }
767 }
768
769 /* Safe vpb_playtone_async */
770 static int playtone( int handle, VPB_TONE *tone)
771 {
772         int ret=VPB_OK;
773         stoptone(handle);
774         if (option_verbose > 3) 
775                 ast_verbose(VERBOSE_PREFIX_4 "[%02d]: Playing tone\n", handle);
776         ret = vpb_playtone_async(handle, tone);
777         return ret;
778 }
779
780 static inline int monitor_handle_owned(struct vpb_pvt *p, VPB_EVENT *e)
781 {
782         struct ast_frame f = {AST_FRAME_CONTROL}; /* default is control, Clear rest. */
783         int endbridge = 0;
784         int res=0;
785
786         if (option_verbose > 3) 
787                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_owned: got event: [%d=>%d]\n", p->dev, e->type, e->data);
788
789         f.src = (char *)type;
790         switch (e->type) {
791                 case VPB_RING:
792                         if (p->mode == MODE_FXO) {
793                                 f.subclass = AST_CONTROL_RING;
794                                 vpb_timer_stop(p->ring_timer);
795                                 vpb_timer_start(p->ring_timer);
796                         } else
797                                 f.frametype = -1; /* ignore ring on station port. */
798                         break;
799
800                 case VPB_RING_OFF:
801                         f.frametype = -1;
802                         break;
803
804                 case VPB_TIMEREXP:
805                         if (e->data == p->busy_timer_id) {
806                                 playtone(p->handle,&Busytone);
807                                 p->state = VPB_STATE_PLAYBUSY;
808                                 vpb_timer_stop(p->busy_timer);
809                                 vpb_timer_start(p->busy_timer);
810                                 f.frametype = -1;
811                         } else if (e->data == p->ringback_timer_id) {
812                                 playtone(p->handle, &Ringbacktone);
813                                 vpb_timer_stop(p->ringback_timer);
814                                 vpb_timer_start(p->ringback_timer);
815                                 f.frametype = -1;
816                         } else if (e->data == p->ring_timer_id) {
817                                 /* We didnt get another ring in time! */
818                                 if (p->owner->_state != AST_STATE_UP)  {
819                                          /* Assume caller has hung up */
820                                         vpb_timer_stop(p->ring_timer);
821                                         f.subclass = AST_CONTROL_HANGUP;
822                                 } else {
823                                         vpb_timer_stop(p->ring_timer);
824                                         f.frametype = -1;
825                                 }
826                                 
827                         } else {
828                                 f.frametype = -1; /* Ignore. */
829                         }
830                         break;
831
832                 case VPB_DTMF_DOWN:
833                 case VPB_DTMF:
834                         if (use_ast_dtmfdet){
835                                 f.frametype = -1;
836                         } else if (p->owner->_state == AST_STATE_UP) {
837                                         f.frametype = AST_FRAME_DTMF;
838                                         f.subclass = e->data;
839                         } else
840                                 f.frametype = -1;
841                         break;
842
843                 case VPB_TONEDETECT:
844                         if (e->data == VPB_BUSY || e->data == VPB_BUSY_308 || e->data == VPB_BUSY_AUST ) {
845                                 if (option_verbose > 3) 
846                                         ast_verbose(VERBOSE_PREFIX_4 "%s: handle_owned: got event: BUSY\n", p->dev);
847                                 if (p->owner->_state == AST_STATE_UP) {
848                                         f.subclass = AST_CONTROL_HANGUP;
849                                 }
850                                 else {
851                                         f.subclass = AST_CONTROL_BUSY;
852                                 }
853                         } 
854                         else if (e->data == VPB_FAX){
855                                 if (!p->faxhandled){
856                                         if (strcmp(p->owner->exten, "fax")) {
857                                                 if (ast_exists_extension(p->owner, ast_strlen_zero(p->owner->macrocontext) ? p->owner->context : p->owner->macrocontext, "fax", 1, p->owner->cid.cid_num)) {
858                                                         if (option_verbose > 2)
859                                                                 ast_verbose(VERBOSE_PREFIX_3 "Redirecting %s to fax extension\n", p->owner->name);
860                                                         /* Save the DID/DNIS when we transfer the fax call to a "fax" extension */
861                                                         pbx_builtin_setvar_helper(p->owner,"FAXEXTEN",p->owner->exten);
862                                                         if (ast_async_goto(p->owner, p->owner->context, "fax", 1))
863                                                                 ast_log(LOG_WARNING, "Failed to async goto '%s' into fax of '%s'\n", p->owner->name, p->owner->context);
864                                                 } else
865                                                         ast_log(LOG_NOTICE, "Fax detected, but no fax extension\n");
866                                         } else
867                                                 ast_log(LOG_DEBUG, "Already in a fax extension, not redirecting\n");
868                                 } else
869                                         ast_log(LOG_DEBUG, "Fax already handled\n");
870
871                         } 
872                         else if (e->data == VPB_GRUNT) {
873                                 if( ( get_time_in_ms() - p->lastgrunt ) > gruntdetect_timeout ) {
874                                         /* Nothing heard on line for a very long time
875                                          * Timeout connection */
876                                         if (option_verbose > 2) 
877                                                 ast_verbose(VERBOSE_PREFIX_3 "grunt timeout\n");
878                                         ast_log(LOG_NOTICE,"%s: Line hangup due of lack of conversation\n",p->dev); 
879                                         f.subclass = AST_CONTROL_HANGUP;
880                                 } else {
881                                         p->lastgrunt = get_time_in_ms();
882                                         f.frametype = -1;
883                                 }
884                         } 
885                         else {
886                                 f.frametype = -1;
887                         }
888                         break;
889
890                 case VPB_CALLEND:
891                         #ifdef DIAL_WITH_CALL_PROGRESS
892                         if (e->data == VPB_CALL_CONNECTED) 
893                                 f.subclass = AST_CONTROL_ANSWER;
894                         else if (e->data == VPB_CALL_NO_DIAL_TONE || e->data == VPB_CALL_NO_RING_BACK)
895                                 f.subclass =  AST_CONTROL_CONGESTION;
896                         else if (e->data == VPB_CALL_NO_ANSWER || e->data == VPB_CALL_BUSY)
897                                 f.subclass = AST_CONTROL_BUSY;
898                         else if (e->data  == VPB_CALL_DISCONNECTED) 
899                                 f.subclass = AST_CONTROL_HANGUP;
900                         #else
901                         ast_log(LOG_NOTICE,"%s: Got call progress callback but blind dialing \n", p->dev); 
902                         f.frametype = -1;
903                         #endif
904                         break;
905
906                 case VPB_STATION_OFFHOOK:
907                         f.subclass = AST_CONTROL_ANSWER;
908                         break;
909
910                 case VPB_DROP:
911                         if ((p->mode == MODE_FXO)&&(UseLoopDrop)){ /* ignore loop drop on stations */
912                                 if (p->owner->_state == AST_STATE_UP) 
913                                         f.subclass = AST_CONTROL_HANGUP;
914                                 else
915                                         f.frametype = -1;
916                         }
917                         break;
918                 case VPB_STATION_ONHOOK:
919                         f.subclass = AST_CONTROL_HANGUP;
920                         break;
921
922                 case VPB_STATION_FLASH:
923                         f.subclass = AST_CONTROL_FLASH;
924                         break;
925
926                 /* Called when dialing has finished and ringing starts
927                  * No indication that call has really been answered when using blind dialing
928                  */
929                 case VPB_DIALEND:
930                         if (p->state < 5){
931                                 f.subclass = AST_CONTROL_ANSWER;
932                                 if (option_verbose > 1) 
933                                         ast_verbose(VERBOSE_PREFIX_2 "%s: Dialend\n", p->dev);
934                         } else {
935                                 f.frametype = -1;
936                         }
937                         break;
938
939                 case VPB_PLAY_UNDERFLOW:
940                         f.frametype = -1;
941                         vpb_reset_play_fifo_alarm(p->handle);
942                         break;
943
944                 case VPB_RECORD_OVERFLOW:
945                         f.frametype = -1;
946                         vpb_reset_record_fifo_alarm(p->handle);
947                         break;
948
949                 default:
950                         f.frametype = -1;
951                         break;
952         }
953
954 /*
955         if (option_verbose > 3) ast_verbose("%s: LOCKING in handle_owned [%d]\n", p->dev,res);
956         res = ast_mutex_lock(&p->lock); 
957         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
958 */
959         {
960                 if (p->bridge) { /* Check what happened, see if we need to report it. */
961                         switch (f.frametype) {
962                                 case AST_FRAME_DTMF:
963                                         if (    !(p->bridge->c0 == p->owner && 
964                                                         (p->bridge->flags & AST_BRIDGE_DTMF_CHANNEL_0) ) &&
965                                                 !(p->bridge->c1 == p->owner && 
966                                                         (p->bridge->flags & AST_BRIDGE_DTMF_CHANNEL_1) )) 
967                                                 /* Kill bridge, this is interesting. */
968                                                 endbridge = 1;
969                                         break;
970
971                                 case AST_FRAME_CONTROL:
972                                         if (!(p->bridge->flags & AST_BRIDGE_IGNORE_SIGS)) 
973                                         #if 0
974                                         if (f.subclass == AST_CONTROL_BUSY ||
975                                         f.subclass == AST_CONTROL_CONGESTION ||
976                                         f.subclass == AST_CONTROL_HANGUP ||
977                                         f.subclass == AST_CONTROL_FLASH)
978                                         #endif
979                                                 endbridge = 1;
980                                         break;
981
982                                 default:
983                                         break;
984                         }
985                         if (endbridge) {
986                                 if (p->bridge->fo)
987                                         *p->bridge->fo = ast_frisolate(&f);
988                                 if (p->bridge->rc)
989                                         *p->bridge->rc = p->owner;
990
991                                 ast_mutex_lock(&p->bridge->lock); {
992                                         p->bridge->endbridge = 1;
993                                         pthread_cond_signal(&p->bridge->cond);
994                                 } ast_mutex_unlock(&p->bridge->lock);                      
995                         }         
996                 }
997         } 
998
999         if (endbridge){
1000                 res = ast_mutex_unlock(&p->lock);
1001 /*
1002                 if (option_verbose > 3) ast_verbose("%s: unLOCKING in handle_owned [%d]\n", p->dev,res);
1003 */
1004                 return 0;
1005         }
1006
1007         if (option_verbose > 3) 
1008                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_owned: Prepared frame type[%d]subclass[%d], bridge=%p owner=[%s]\n",
1009                         p->dev, f.frametype, f.subclass, (void *)p->bridge, p->owner->name);
1010
1011         /* Trylock used here to avoid deadlock that can occur if we
1012          * happen to be in here handling an event when hangup is called
1013          * Problem is that hangup holds p->owner->lock
1014          */
1015         if ((f.frametype >= 0)&& (f.frametype != AST_FRAME_NULL)&&(p->owner)) {
1016                 if (ast_mutex_trylock(&p->owner->lock)==0)  {
1017                         ast_queue_frame(p->owner, &f);
1018                         ast_mutex_unlock(&p->owner->lock);
1019                         if (option_verbose > 3) 
1020                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handled_owned: Queued Frame to [%s]\n", p->dev,p->owner->name);
1021                 } else {
1022                         ast_verbose("%s: handled_owned: Missed event %d/%d \n",
1023                                 p->dev,f.frametype, f.subclass);
1024                 }
1025         }
1026         res = ast_mutex_unlock(&p->lock);
1027 /*
1028         if (option_verbose > 3) ast_verbose("%s: unLOCKING in handle_owned [%d]\n", p->dev,res);
1029 */
1030
1031         return 0;
1032 }
1033
1034 static inline int monitor_handle_notowned(struct vpb_pvt *p, VPB_EVENT *e)
1035 {
1036         char s[2] = {0};
1037         struct ast_channel *owner = p->owner;
1038         char cid_num[256];
1039         char cid_name[256];
1040         struct ast_channel *c;
1041
1042         if (option_verbose > 3) {
1043                 char str[VPB_MAX_STR];
1044                 vpb_translate_event(e, str);
1045                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: mode=%d, event[%d][%s]=[%d]\n",
1046                         p->dev, p->mode, e->type,str, e->data);
1047         }
1048
1049         switch(e->type) {
1050                 case VPB_RING:
1051                         if (p->mode == MODE_FXO) /* FXO port ring, start * */ {
1052                                 vpb_new(p, AST_STATE_RING, p->context);
1053                                 if(p->callerid_type == 1) {
1054                                         if (option_verbose>3) 
1055                                                 ast_verbose(VERBOSE_PREFIX_4 "Using VPB Caller ID\n");
1056                                         get_callerid(p);        /* Australian Caller ID only between 1st and 2nd ring  */
1057                                 }
1058                                 get_callerid_ast(p);    /* Caller ID using the ast functions */
1059                                 vpb_timer_stop(p->ring_timer);
1060                                 vpb_timer_start(p->ring_timer);
1061                         }
1062                         break;
1063
1064                 case VPB_RING_OFF:
1065                         break;
1066
1067                 case VPB_STATION_OFFHOOK:
1068                         if (p->mode == MODE_IMMEDIATE) 
1069                                 vpb_new(p,AST_STATE_RING, p->context);
1070                         else {
1071                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: playing dialtone\n",p->dev);
1072                                 playtone(p->handle, &Dialtone);
1073                                 p->state=VPB_STATE_PLAYDIAL;
1074                                 p->wantdtmf = 1;
1075                                 p->ext[0] = 0;  /* Just to be sure & paranoid.*/
1076                         }
1077                         break;
1078
1079                 case VPB_DIALEND:
1080                         if (p->mode == MODE_DIALTONE){
1081                                 if (p->state == VPB_STATE_PLAYDIAL) {
1082                                         playtone(p->handle, &Dialtone);
1083                                         p->wantdtmf = 1;
1084                                         p->ext[0] = 0;  /* Just to be sure & paranoid. */
1085                                 }
1086                                 /* These are not needed as they have timers to restart them
1087                                 else if (p->state == VPB_STATE_PLAYBUSY) {
1088                                         playtone(p->handle, &Busytone);
1089                                         p->wantdtmf = 1;
1090                                         p->ext[0] = 0;  
1091                                 }
1092                                 else if (p->state == VPB_STATE_PLAYRING) {
1093                                         playtone(p->handle, &Ringbacktone);
1094                                         p->wantdtmf = 1;
1095                                         p->ext[0] = 0;
1096                                 }
1097                                 */
1098                         } else {
1099                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: Got a DIALEND when not really expected\n",p->dev);
1100                         }
1101                         break;
1102
1103                 case VPB_STATION_ONHOOK:        /* clear ext */
1104                         stoptone(p->handle);
1105                         p->wantdtmf = 1 ;
1106                         p->ext[0] = 0;
1107                         p->state=VPB_STATE_ONHOOK;
1108                         break;
1109                 case VPB_TIMEREXP:
1110                         if (e->data == p->dtmfidd_timer_id) {
1111                                 if (ast_exists_extension(NULL, p->context, p->ext, 1, p->callerid)){
1112                                         if (option_verbose > 3)
1113                                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: DTMF IDD timer out, matching on [%s] in [%s]\n", p->dev,p->ext , p->context);
1114
1115                                         vpb_new(p,AST_STATE_RING, p->context);
1116                                 }
1117                         } else if (e->data == p->ring_timer_id) {
1118                                 /* We didnt get another ring in time! */
1119                                 if (p->owner->_state != AST_STATE_UP)  {
1120                                          /* Assume caller has hung up */
1121                                         vpb_timer_stop(p->ring_timer);
1122                                 }
1123                         } 
1124                         break;
1125
1126                 case VPB_DTMF:
1127                         if (p->state == VPB_STATE_ONHOOK){
1128                                 /* DTMF's being passed while on-hook maybe Caller ID */
1129                                 if ( p->mode == MODE_FXO ) {
1130                                         if ( e->data == DTMF_CID_START ) { /* CallerID Start signal */
1131                                                 p->dtmf_caller_pos = 0; /* Leaves the first digit out */
1132                                                 memset(p->callerid,0,AST_MAX_EXTENSION);
1133                                         }
1134                                         else if ( e->data == DTMF_CID_STOP ) { /* CallerID End signal */
1135                                                 p->callerid[p->dtmf_caller_pos] = '\0';
1136                                                 if (option_verbose > 2)
1137                                                         ast_verbose(VERBOSE_PREFIX_3 " %s: DTMF CallerID %s\n",p->dev,p->callerid);
1138                                                 if (owner){
1139                                                         /*
1140                                                         if (owner->cid.cid_num)
1141                                                                 free(owner->cid.cid_num);
1142                                                         owner->cid.cid_num=NULL;
1143                                                         if (owner->cid.cid_name)
1144                                                                 free(owner->cid.cid_name);
1145                                                         owner->cid.cid_name=NULL;
1146                                                         owner->cid.cid_num = strdup(p->callerid);
1147                                                         */
1148                                                         cid_name[0] = '\0';
1149                                                         cid_num[0] = '\0';
1150                                                         ast_callerid_split(p->callerid, cid_name, sizeof(cid_name), cid_num, sizeof(cid_num));
1151                                                         ast_set_callerid(owner, cid_num, cid_name, cid_num);
1152
1153                                                 }
1154                                                 else {
1155                                                         if (option_verbose > 2)
1156                                                                 ast_verbose(VERBOSE_PREFIX_3 " %s: DTMF CallerID: no owner to assign CID \n",p->dev);
1157                                                 }
1158                                         } else if ( p->dtmf_caller_pos < AST_MAX_EXTENSION ) {
1159                                                 if ( p->dtmf_caller_pos >= 0 )
1160                                                         p->callerid[p->dtmf_caller_pos] = e->data;
1161                                                 p->dtmf_caller_pos++;
1162                                         }
1163                                 }
1164                                 break;
1165                         }
1166                         if (p->wantdtmf == 1) {
1167                                 stoptone(p->handle);
1168                                 p->wantdtmf = 0;
1169                         }
1170                         p->state=VPB_STATE_GETDTMF;
1171                         s[0] = e->data;
1172                         strncat(p->ext, s, sizeof(p->ext) - strlen(p->ext) - 1);
1173                         #if 0
1174                         if (!strcmp(p->ext,ast_pickup_ext())) {
1175                                 /* Call pickup has been dialled! */
1176                                 if (ast_pickup_call(c)) {
1177                                         /* Call pickup wasnt possible */
1178                                 }
1179                         }
1180                         else 
1181                         #endif
1182                         if (ast_exists_extension(NULL, p->context, p->ext, 1, p->callerid)){
1183                                 if ( ast_canmatch_extension(NULL, p->context, p->ext, 1, p->callerid)){
1184                                         if (option_verbose > 3)
1185                                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: Multiple matches on [%s] in [%s]\n", p->dev,p->ext , p->context);
1186                                         /* Start DTMF IDD timer */
1187                                         vpb_timer_stop(p->dtmfidd_timer);
1188                                         vpb_timer_start(p->dtmfidd_timer);
1189                                 }
1190                                 else {
1191                                         if (option_verbose > 3)
1192                                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: Matched on [%s] in [%s]\n", p->dev,p->ext , p->context);
1193                                         vpb_new(p,AST_STATE_UP, p->context);
1194                                 }
1195                         } else if (!ast_canmatch_extension(NULL, p->context, p->ext, 1, p->callerid)){
1196                                 if (ast_exists_extension(NULL, "default", p->ext, 1, p->callerid)) {
1197                                         vpb_new(p,AST_STATE_UP, "default");           
1198                                 } else if (!ast_canmatch_extension(NULL, "default", p->ext, 1, p->callerid)) {
1199                                         if (option_verbose > 3) {
1200                                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: can't match anything in %s or default\n", p->dev, p->context);
1201                                         }
1202                                         playtone(p->handle, &Busytone);
1203                                         vpb_timer_stop(p->busy_timer);
1204                                         vpb_timer_start(p->busy_timer);
1205                                         p->state = VPB_STATE_PLAYBUSY;
1206                                 }
1207                         }
1208                         break;
1209
1210                 default:
1211                         /* Ignore.*/
1212                         break;
1213         }
1214
1215         if (option_verbose > 3) 
1216                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: mode=%d, [%d=>%d]\n",
1217                         p->dev, p->mode, e->type, e->data);
1218
1219         return 0;
1220 }
1221
1222 static void *do_monitor(void *unused)
1223 {
1224
1225         /* Monitor thread, doesn't die until explicitly killed. */
1226
1227         if (option_verbose > 1) 
1228                 ast_verbose(VERBOSE_PREFIX_2 "Starting vpb monitor thread[%ld]\n",
1229         pthread_self());
1230
1231         pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
1232
1233         for(;;) {
1234                 VPB_EVENT e;
1235                 VPB_EVENT je;
1236                 char str[VPB_MAX_STR];
1237                 struct vpb_pvt *p;
1238
1239                 /*
1240                 if (option_verbose > 3)
1241                      ast_verbose(VERBOSE_PREFIX_4 "Monitor waiting for event\n");
1242                 */
1243
1244                 int res = vpb_get_event_sync(&e, VPB_WAIT_TIMEOUT);
1245                 if( (res==VPB_NO_EVENTS) || (res==VPB_TIME_OUT) ){
1246                         /*
1247                         if (option_verbose > 3){
1248                                 if (res ==  VPB_NO_EVENTS){
1249                                         ast_verbose(VERBOSE_PREFIX_4 "No events....\n");
1250                                 } else {
1251                                         ast_verbose(VERBOSE_PREFIX_4 "No events, timed out....\n");
1252                                 }
1253                         }
1254                         */
1255                         continue;
1256                 }
1257
1258                 if (res != VPB_OK) {
1259                         ast_log(LOG_ERROR,"Monitor get event error %s\n", vpb_strerror(res) );
1260                         ast_verbose("Monitor get event error %s\n", vpb_strerror(res) );
1261                         continue;
1262                 }
1263
1264                 str[0] = 0;
1265
1266                 p = NULL;
1267
1268                 ast_mutex_lock(&monlock); {
1269
1270                         if (e.type == VPB_NULL_EVENT) {
1271                                 if (option_verbose > 3)
1272                                         ast_verbose(VERBOSE_PREFIX_4 "Monitor got null event\n");
1273                         }
1274                         else {
1275                                 vpb_translate_event(&e, str);
1276                                 if (strlen(str)>1){
1277                                         str[(strlen(str)-1)]='\0';
1278                                 }
1279
1280                                 ast_mutex_lock(&iflock); {
1281                                         p = iflist;
1282                                         while (p && p->handle != e.handle)
1283                                                 p = p->next;
1284                                 } ast_mutex_unlock(&iflock);
1285
1286                                 if (p && (option_verbose > 3))
1287                                         ast_verbose(VERBOSE_PREFIX_4 "%s: Event [%d=>%s] \n", 
1288                                                 p ? p->dev : "null", e.type, str );
1289                         }
1290
1291                 } ast_mutex_unlock(&monlock); 
1292
1293                 if (!p) {
1294                         if (e.type != VPB_NULL_EVENT){
1295                                 ast_log(LOG_WARNING, "Got event [%s][%d], no matching iface!\n", str,e.type);    
1296                                 if (option_verbose > 3){
1297                                         ast_verbose(VERBOSE_PREFIX_4 "vpb/ERR: No interface for Event [%d=>%s] \n",e.type,str );
1298                                 }
1299                         }
1300                         continue;
1301                 } 
1302
1303                 /* flush the event from the channel event Q */
1304                 vpb_get_event_ch_async(e.handle,&je);
1305                 if (option_verbose > 4){
1306                         vpb_translate_event(&je, str);
1307                         ast_verbose("%s: Flushing event [%d]=>%s\n",p->dev,je.type,str);
1308                 }
1309
1310                 /* Check for ownership and locks */
1311                 if ((p->owner)&&(!p->golock)){
1312                         /* Need to get owner lock */
1313                         /* Safely grab both p->lock and p->owner->lock so that there
1314                         cannot be a race with something from the other side */
1315                         /*
1316                         ast_mutex_lock(&p->lock);
1317                         while(ast_mutex_trylock(&p->owner->lock)) {
1318                                 ast_mutex_unlock(&p->lock);
1319                                 usleep(1);
1320                                 ast_mutex_lock(&p->lock);
1321                                 if (!p->owner)
1322                                         break;
1323                         }
1324                         if (p->owner)
1325                                 p->golock=1;
1326                         */
1327                 }
1328                 /* Two scenarios: Are you owned or not. */
1329                 if (p->owner) {
1330                         monitor_handle_owned(p, &e);
1331                 } else {
1332                         monitor_handle_notowned(p, &e);
1333                 }
1334                 /* if ((!p->owner)&&(p->golock)){
1335                         ast_mutex_unlock(&p->owner->lock);
1336                         ast_mutex_unlock(&p->lock);
1337                 }
1338                 */
1339
1340         }
1341
1342         return NULL;
1343 }
1344
1345 static int restart_monitor(void)
1346 {
1347         int error = 0;
1348
1349         /* If we're supposed to be stopped -- stay stopped */
1350         if (mthreadactive == -2)
1351                 return 0;
1352
1353         if (option_verbose > 3)
1354                 ast_verbose(VERBOSE_PREFIX_4 "Restarting monitor\n");
1355
1356         ast_mutex_lock(&monlock); {
1357                 if (monitor_thread == pthread_self()) {
1358                         ast_log(LOG_WARNING, "Cannot kill myself\n");
1359                         error = -1;
1360                         if (option_verbose > 3)
1361                                 ast_verbose(VERBOSE_PREFIX_4 "Monitor trying to kill monitor\n");
1362                 }
1363                 else {
1364                         if (mthreadactive != -1) {
1365                                 /* Why do other drivers kill the thread? No need says I, simply awake thread with event. */
1366                                 VPB_EVENT e;
1367                                 e.handle = 0;
1368                                 e.type = VPB_NULL_EVENT;
1369                                 e.data = 0;
1370
1371                                 if (option_verbose > 3)
1372                                         ast_verbose(VERBOSE_PREFIX_4 "Trying to reawake monitor\n");
1373
1374                                 vpb_put_event(&e);
1375                         } else {
1376                                 /* Start a new monitor */
1377                                 int pid = ast_pthread_create(&monitor_thread, NULL, do_monitor, NULL); 
1378                                 if (option_verbose > 3)
1379                                         ast_verbose(VERBOSE_PREFIX_4 "Created new monitor thread %d\n",pid);
1380                                 if (pid < 0) {
1381                                         ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
1382                                         error = -1;
1383                                 } else
1384                                         mthreadactive = 0; /* Started the thread!*/
1385                         }
1386                 }
1387         } ast_mutex_unlock(&monlock);
1388
1389         if (option_verbose > 3)
1390                 ast_verbose(VERBOSE_PREFIX_4 "Monitor restarted\n");
1391
1392         return error;
1393 }
1394
1395 /* Per board config that must be called after vpb_open() */
1396 static void mkbrd(vpb_model_t model, int echo_cancel)
1397 {
1398         if(!bridges) {
1399                 if(model==vpb_model_v4pci) 
1400                         max_bridges = MAX_BRIDGES_V4PCI;
1401                 bridges = (vpb_bridge_t *)malloc(max_bridges * sizeof(vpb_bridge_t) );
1402                 if(!bridges) 
1403                         ast_log(LOG_ERROR, "Failed to initialize bridges\n");
1404                 else {
1405                         memset(bridges,0,max_bridges * sizeof(vpb_bridge_t));
1406                         for(int i = 0; i < max_bridges; i++ ) {
1407                                 ast_mutex_init(&bridges[i].lock);
1408                                 pthread_cond_init(&bridges[i].cond, NULL);
1409                         }
1410                 }
1411         }
1412         if(!echo_cancel) {
1413                 if (model==vpb_model_v4pci) {
1414                         vpb_echo_canc_disable();
1415                         ast_log(LOG_NOTICE, "Voicetronix echo cancellation OFF\n");
1416                 } 
1417                 else {
1418                 /* need to it port by port for OpenSwitch*/
1419                 }
1420         } else {
1421                 if (model==vpb_model_v4pci) {
1422                         vpb_echo_canc_enable();
1423                         ast_log(LOG_NOTICE, "Voicetronix echo cancellation ON\n");
1424                         if (ec_supp_threshold > -1){
1425                                 vpb_echo_canc_set_sup_thresh((short *)&ec_supp_threshold);
1426                                 ast_log(LOG_NOTICE, "Voicetronix EC Sup Thres set\n");
1427                         }
1428                 }
1429                 else {
1430                 /* need to it port by port for OpenSwitch*/
1431                 }
1432         }
1433 }
1434
1435 static struct vpb_pvt *mkif(int board, int channel, int mode, int gains, float txgain, float rxgain,
1436                          float txswgain, float rxswgain, int bal1, int bal2, int bal3,
1437                          char * callerid, int echo_cancel, int group, ast_group_t callgroup, ast_group_t pickupgroup )
1438 {
1439         struct vpb_pvt *tmp;
1440         char buf[64];
1441
1442         tmp = (struct vpb_pvt *)calloc(1, sizeof *tmp);
1443
1444         if (!tmp)
1445                 return NULL;
1446
1447         tmp->handle = vpb_open(board, channel);
1448
1449         if (tmp->handle < 0) {    
1450                 ast_log(LOG_WARNING, "Unable to create channel vpb/%d-%d: %s\n", 
1451                                         board, channel, strerror(errno));
1452                 free(tmp);
1453                 return NULL;
1454         }
1455                
1456         snprintf(tmp->dev, sizeof(tmp->dev), "vpb/%d-%d", board, channel);
1457
1458         tmp->mode = mode;
1459
1460         tmp->group = group;
1461         tmp->callgroup = callgroup;
1462         tmp->pickupgroup = pickupgroup;
1463
1464         /* Initilize dtmf caller ID position variable */
1465         tmp->dtmf_caller_pos=0;
1466
1467         strncpy(tmp->language, language, sizeof(tmp->language) - 1);
1468         strncpy(tmp->context, context, sizeof(tmp->context) - 1);
1469
1470         tmp->callerid_type=0;
1471         if(callerid) { 
1472                 if (strcasecmp(callerid,"on")==0){
1473                         tmp->callerid_type =1;
1474                         strncpy(tmp->callerid, "unknown", sizeof(tmp->callerid) - 1);
1475                 }
1476                 else if (strcasecmp(callerid,"v23")==0){
1477                         tmp->callerid_type =2;
1478                         strncpy(tmp->callerid, "unknown", sizeof(tmp->callerid) - 1);
1479                 }
1480                 else if (strcasecmp(callerid,"bell")==0){
1481                         tmp->callerid_type =3;
1482                         strncpy(tmp->callerid, "unknown", sizeof(tmp->callerid) - 1);
1483                 }
1484                 else {
1485                         strncpy(tmp->callerid, callerid, sizeof(tmp->callerid) - 1);
1486                 }
1487         } else {
1488                 strncpy(tmp->callerid, "unknown", sizeof(tmp->callerid) - 1);
1489         }
1490
1491         /* check if codec balances have been set in the config file */
1492         if (bal3>=0) {
1493                 if ((bal1>=0) && !(bal1 & 32)) bal1 |= 32;
1494                         vpb_set_codec_reg(tmp->handle, 0x42, bal3);
1495         }
1496         if(bal1>=0) vpb_set_codec_reg(tmp->handle, 0x32, bal1);
1497         if(bal2>=0) vpb_set_codec_reg(tmp->handle, 0x3a, bal2);
1498
1499         if (gains & VPB_GOT_TXHWG){
1500                 if (txgain > MAX_VPB_GAIN){
1501                         tmp->txgain = MAX_VPB_GAIN;
1502                 }
1503                 else if (txgain < MIN_VPB_GAIN){
1504                         tmp->txgain = MIN_VPB_GAIN;
1505                 }
1506                 else {
1507                         tmp->txgain = txgain;
1508                 }
1509                 
1510                 ast_log(LOG_NOTICE,"VPB setting Tx Hw gain to [%f]\n",tmp->txgain);
1511                 vpb_play_set_hw_gain(tmp->handle, tmp->txgain);
1512         }
1513
1514         if (gains & VPB_GOT_RXHWG){
1515                 if (rxgain > MAX_VPB_GAIN){
1516                         tmp->rxgain = MAX_VPB_GAIN;
1517                 }
1518                 else if (rxgain < MIN_VPB_GAIN){
1519                         tmp->rxgain = MIN_VPB_GAIN;
1520                 }
1521                 else {
1522                         tmp->rxgain = rxgain;
1523                 }
1524                 ast_log(LOG_NOTICE,"VPB setting Rx Hw gain to [%f]\n",tmp->rxgain);
1525                 vpb_record_set_hw_gain(tmp->handle,tmp->rxgain);
1526         }
1527
1528         if (gains & VPB_GOT_TXSWG){
1529                 tmp->txswgain = txswgain;
1530                 ast_log(LOG_NOTICE,"VPB setting Tx Sw gain to [%f]\n",tmp->txswgain);
1531                 vpb_play_set_gain(tmp->handle, tmp->txswgain);
1532         }
1533
1534         if (gains & VPB_GOT_RXSWG){
1535                 tmp->rxswgain = rxswgain;
1536                 ast_log(LOG_NOTICE,"VPB setting Rx Sw gain to [%f]\n",tmp->rxswgain);
1537                 vpb_record_set_gain(tmp->handle, tmp->rxswgain);
1538         }
1539
1540         tmp->vpb_model = vpb_model_unknown;
1541         if( vpb_get_model(buf) == VPB_OK ) {
1542                 if(strcmp(buf,"V12PCI")==0) 
1543                         tmp->vpb_model = vpb_model_v12pci;
1544                 else if(strcmp(buf,"VPB4")==0) 
1545                         tmp->vpb_model = vpb_model_v4pci;
1546         }
1547
1548         ast_mutex_init(&tmp->owner_lock);
1549         ast_mutex_init(&tmp->lock);
1550         ast_mutex_init(&tmp->record_lock);
1551         ast_mutex_init(&tmp->play_lock);
1552         ast_mutex_init(&tmp->play_dtmf_lock);
1553
1554         /* set default read state */
1555         tmp->read_state = 0;
1556         
1557         tmp->golock=0;
1558
1559         tmp->busy_timer_id = vpb_timer_get_unique_timer_id();
1560         vpb_timer_open(&tmp->busy_timer, tmp->handle, tmp->busy_timer_id, TIMER_PERIOD_BUSY);
1561
1562         tmp->ringback_timer_id = vpb_timer_get_unique_timer_id();
1563         vpb_timer_open(&tmp->ringback_timer, tmp->handle, tmp->ringback_timer_id, TIMER_PERIOD_RINGBACK);
1564
1565         tmp->ring_timer_id = vpb_timer_get_unique_timer_id();
1566         vpb_timer_open(&tmp->ring_timer, tmp->handle, tmp->ring_timer_id, TIMER_PERIOD_RING);
1567               
1568         tmp->dtmfidd_timer_id = vpb_timer_get_unique_timer_id();
1569         vpb_timer_open(&tmp->dtmfidd_timer, tmp->handle, tmp->dtmfidd_timer_id, dtmf_idd);
1570               
1571         if (mode == MODE_FXO){
1572                 if (use_ast_dtmfdet)
1573                         vpb_set_event_mask(tmp->handle, VPB_EVENTS_NODTMF );
1574                 else
1575                         vpb_set_event_mask(tmp->handle, VPB_EVENTS_ALL );
1576         }
1577         else {
1578 /*
1579                 if (use_ast_dtmfdet)
1580                         vpb_set_event_mask(tmp->handle, VPB_EVENTS_NODTMF );
1581                 else
1582 */
1583                         vpb_set_event_mask(tmp->handle, VPB_EVENTS_STAT );
1584         }
1585
1586         if ((tmp->vpb_model == vpb_model_v12pci) && (echo_cancel)){
1587                 vpb_hostecho_on(tmp->handle);
1588         }
1589         if (use_ast_dtmfdet) {
1590                 tmp->vad = ast_dsp_new();
1591                 ast_dsp_set_features(tmp->vad, DSP_FEATURE_DTMF_DETECT);
1592                 ast_dsp_digitmode(tmp->vad, DSP_DIGITMODE_DTMF);
1593                 if (relaxdtmf)
1594                         ast_dsp_digitmode(tmp->vad, DSP_DIGITMODE_DTMF|DSP_DIGITMODE_RELAXDTMF);
1595         }
1596         else {
1597                 tmp->vad = NULL;
1598         }
1599
1600         /* define grunt tone */
1601         vpb_settonedet(tmp->handle,&toned_ungrunt);
1602
1603         ast_log(LOG_NOTICE,"Voicetronix %s channel %s initialized (rxsg=%f/txsg=%f/rxhg=%f/txhg=%f)(0x%x/0x%x/0x%x)\n",
1604                 (tmp->vpb_model==vpb_model_v4pci)?"V4PCI": (tmp->vpb_model==vpb_model_v12pci)?"V12PCI":"[Unknown model]",
1605                 tmp->dev, tmp->rxswgain, tmp->txswgain, tmp->rxgain, tmp->txgain, bal1, bal2, bal3 );
1606
1607         return tmp;
1608 }
1609
1610 static int vpb_indicate(struct ast_channel *ast, int condition)
1611 {
1612         struct vpb_pvt *p = (struct vpb_pvt *)ast->tech_pvt;
1613         int res = 0;
1614         int tmp = 0;
1615
1616         if (!use_ast_ind)
1617                 return 0;
1618
1619         if (option_verbose > 3)
1620                 ast_verbose(VERBOSE_PREFIX_4 "%s: vpb_indicate [%d] state[%d]\n", p->dev, condition,ast->_state);
1621 /*
1622         if (ast->_state != AST_STATE_UP) {
1623                 ast_verbose(VERBOSE_PREFIX_4 "%s: vpb_indicate Not in AST_STATE_UP\n", p->dev, condition,ast->_state);
1624                 return res;
1625         }
1626 */
1627
1628 /*
1629         if (option_verbose > 3) ast_verbose("%s: LOCKING in indicate \n", p->dev);
1630         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1631 */
1632         ast_mutex_lock(&p->lock);
1633         switch(condition) {
1634                 case AST_CONTROL_BUSY:
1635                 case AST_CONTROL_CONGESTION:
1636                         if (ast->_state == AST_STATE_UP) {
1637                                 playtone(p->handle, &Busytone);
1638                                 p->state = VPB_STATE_PLAYBUSY;
1639                                 vpb_timer_stop(p->busy_timer); 
1640                                 vpb_timer_start(p->busy_timer); 
1641                         }
1642                         break;
1643                 case AST_CONTROL_RINGING:
1644                         if (ast->_state == AST_STATE_UP) {
1645                                 playtone(p->handle, &Ringbacktone);
1646                                 p->state = VPB_STATE_PLAYRING;
1647                                 if (option_verbose > 3)
1648                                         ast_verbose(VERBOSE_PREFIX_4 "%s: vpb indicate: setting ringback timer [%d]\n", p->dev,p->ringback_timer_id);
1649                                 
1650                                 vpb_timer_stop(p->ringback_timer);
1651                                 vpb_timer_start(p->ringback_timer);
1652                         }
1653                         break;      
1654                 case AST_CONTROL_ANSWER:
1655                 case -1: /* -1 means stop playing? */
1656                         vpb_timer_stop(p->ringback_timer);
1657                         vpb_timer_stop(p->busy_timer);
1658                         stoptone(p->handle);
1659                         break;
1660                 case AST_CONTROL_HANGUP:
1661                         if (ast->_state == AST_STATE_UP) {
1662                                 playtone(p->handle, &Busytone);
1663                                 p->state = VPB_STATE_PLAYBUSY;
1664                                 vpb_timer_stop(p->busy_timer);
1665                                 vpb_timer_start(p->busy_timer);
1666                         }
1667                         break;
1668
1669                 default:
1670                         res = 0;
1671                         break;
1672         }
1673         tmp = ast_mutex_unlock(&p->lock);
1674 /*
1675         if (option_verbose > 3) ast_verbose("%s: unLOCKING in indicate [%d]\n", p->dev,tmp);
1676 */
1677         return res;
1678 }
1679
1680 static int vpb_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
1681 {
1682         struct vpb_pvt *p = (struct vpb_pvt *)newchan->tech_pvt;
1683         int res = 0;
1684
1685 /*
1686         if (option_verbose > 3) ast_verbose("%s: LOCKING in fixup \n", p->dev);
1687         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1688 */
1689         ast_mutex_lock(&p->lock);
1690         ast_log(LOG_DEBUG, "New owner for channel %s is %s\n", p->dev, newchan->name);
1691
1692         if (p->owner == oldchan) {
1693                 p->owner = newchan;
1694         }
1695
1696         if (newchan->_state == AST_STATE_RINGING){
1697                 if (use_ast_ind == 1)
1698                         ast_indicate(newchan, AST_CONTROL_RINGING);
1699                 else
1700                         vpb_indicate(newchan, AST_CONTROL_RINGING);
1701         }
1702
1703         res= ast_mutex_unlock(&p->lock);
1704 /*
1705         if (option_verbose > 3) ast_verbose("%s: unLOCKING in fixup [%d]\n", p->dev,res);
1706 */
1707         return 0;
1708 }
1709
1710 static int vpb_digit(struct ast_channel *ast, char digit)
1711 {
1712         struct vpb_pvt *p = (struct vpb_pvt *)ast->tech_pvt;
1713         char s[2];
1714         int res = 0;
1715
1716         if (use_ast_dtmf){
1717                 if (option_verbose > 3)
1718                         ast_verbose(VERBOSE_PREFIX_4 "%s: vpb_digit: asked to play digit[%c] but we are using asterisk dtmf play back?!\n", p->dev, digit);
1719                 return 0;
1720         }
1721
1722 /*
1723         if (option_verbose > 3) ast_verbose("%s: LOCKING in digit \n", p->dev);
1724         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1725 */
1726         ast_mutex_lock(&p->lock);
1727
1728
1729         s[0] = digit;
1730         s[1] = '\0';
1731
1732         if (option_verbose > 3)
1733                 ast_verbose(VERBOSE_PREFIX_4 "%s: vpb_digit: asked to play digit[%s]\n", p->dev, s);
1734
1735         ast_mutex_lock(&p->play_dtmf_lock);
1736         strncat(p->play_dtmf,s,sizeof(*p->play_dtmf));
1737         ast_mutex_unlock(&p->play_dtmf_lock);
1738
1739         res = ast_mutex_unlock(&p->lock);
1740 /*
1741         if (option_verbose > 3) ast_verbose("%s: unLOCKING in digit [%d]\n", p->dev,res);
1742 */
1743         return 0;
1744 }
1745
1746 /* Places a call out of a VPB channel */
1747 static int vpb_call(struct ast_channel *ast, char *dest, int timeout)
1748 {
1749         struct vpb_pvt *p = (struct vpb_pvt *)ast->tech_pvt;
1750         int res = 0,i;
1751         char *s = strrchr(dest, '/');
1752         char dialstring[254] = "";
1753         int tmp = 0;
1754
1755 /*
1756         if (option_verbose > 3) ast_verbose("%s: LOCKING in call \n", p->dev);
1757         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1758 */
1759         ast_mutex_lock(&p->lock);
1760
1761         if (s)
1762                 s = s + 1;
1763         else
1764                 s = dest;
1765         strncpy(dialstring, s, sizeof(dialstring) - 1);
1766         for (i=0; dialstring[i] != '\0' ; i++) {
1767                 if ((dialstring[i] == 'w') || (dialstring[i] == 'W'))
1768                         dialstring[i] = ',';
1769                 else if ((dialstring[i] == 'f') || (dialstring[i] == 'F'))
1770                         dialstring[i] = '&';
1771         }       
1772         if (option_verbose > 3)
1773                 ast_verbose(VERBOSE_PREFIX_4 "%s: starting call\n", p->dev);
1774
1775         if (ast->_state != AST_STATE_DOWN && ast->_state != AST_STATE_RESERVED) {
1776                 ast_log(LOG_WARNING, "vpb_call on %s neither down nor reserved!\n", ast->name);
1777                 tmp = ast_mutex_unlock(&p->lock);
1778 /*
1779                 if (option_verbose > 3) ast_verbose("%s: unLOCKING in call [%d]\n", p->dev,tmp);
1780 */
1781                 return -1;
1782         }
1783         if (p->mode != MODE_FXO)  /* Station port, ring it. */
1784                 res = vpb_ring_station_async(p->handle, VPB_RING_STATION_ON,0);       
1785         else {
1786                 VPB_CALL call;
1787
1788                 /* Dial must timeout or it can leave channels unuseable */
1789                 if( timeout == 0 )
1790                         timeout = TIMER_PERIOD_NOANSWER;
1791                 else 
1792                         timeout = timeout * 1000; /* convert from secs to ms. */
1793
1794                 /* These timeouts are only used with call progress dialing */
1795                 call.dialtones = 1; /* Number of dialtones to get outside line */
1796                 call.dialtone_timeout = VPB_DIALTONE_WAIT; /* Wait this long for dialtone (ms) */
1797                 call.ringback_timeout = VPB_RINGWAIT; /* Wait this long for ringing after dialing (ms) */
1798                 call.inter_ringback_timeout = VPB_CONNECTED_WAIT; /* If ringing stops for this long consider it connected (ms) */
1799                 call.answer_timeout = timeout; /* Time to wait for answer after ringing starts (ms) */
1800                 memcpy( &call.tone_map,  DialToneMap, sizeof(DialToneMap) );
1801                 vpb_set_call(p->handle, &call);
1802
1803                 if (option_verbose > 1)
1804                         ast_verbose(VERBOSE_PREFIX_2 "%s: Calling %s on %s \n",p->dev, dialstring, ast->name); 
1805
1806                 if (option_verbose > 2) {
1807                         int j;
1808                         ast_verbose(VERBOSE_PREFIX_2 "%s: Dial parms for %s %d/%dms/%dms/%dms/%dms\n", p->dev
1809                                 , ast->name, call.dialtones, call.dialtone_timeout
1810                                 , call.ringback_timeout, call.inter_ringback_timeout
1811                                 , call.answer_timeout );
1812                         for( j=0; !call.tone_map[j].terminate; j++ )
1813                                 ast_verbose(VERBOSE_PREFIX_2 "%s: Dial parms for %s tone %d->%d\n", p->dev,
1814                                         ast->name, call.tone_map[j].tone_id, call.tone_map[j].call_id); 
1815                 }
1816
1817                 if (option_verbose > 3)
1818                                 ast_verbose("%s: Disabling Loop Drop detection\n",p->dev);
1819                 vpb_disable_event(p->handle, VPB_MDROP);
1820                 vpb_sethook_sync(p->handle,VPB_OFFHOOK);
1821                 p->state=VPB_STATE_OFFHOOK;
1822
1823                 #ifndef DIAL_WITH_CALL_PROGRESS
1824                 vpb_sleep(300);
1825                 if (option_verbose > 3)
1826                                 ast_verbose("%s: Enabling Loop Drop detection\n",p->dev);
1827                 vpb_enable_event(p->handle, VPB_MDROP);
1828                 res = vpb_dial_async(p->handle, dialstring);
1829                 #else
1830                 if (option_verbose > 3)
1831                                 ast_verbose("%s: Enabling Loop Drop detection\n",p->dev);
1832                 vpb_enable_event(p->handle, VPB_MDROP);
1833                 res = vpb_call_async(p->handle, dialstring);
1834                 #endif
1835
1836                 if (res != VPB_OK) {
1837                         ast_log(LOG_DEBUG, "Call on %s to %s failed: %s\n", ast->name, s, vpb_strerror(res));         
1838                         res = -1;
1839                 } else 
1840                         res = 0;
1841         }
1842
1843         if (option_verbose > 2)
1844                 ast_verbose(VERBOSE_PREFIX_3 "%s: VPB Calling %s [t=%d] on %s returned %d\n",p->dev , s, timeout, ast->name, res); 
1845         if (res == 0) {
1846                 ast_setstate(ast, AST_STATE_RINGING);
1847                 ast_queue_control(ast,AST_CONTROL_RINGING);             
1848         }
1849
1850         if (!p->readthread){
1851                 ast_pthread_create(&p->readthread, NULL, do_chanreads, (void *)p);
1852         }
1853
1854         tmp = ast_mutex_unlock(&p->lock);
1855 /*
1856         if (option_verbose > 3) ast_verbose("%s: unLOCKING in call [%d]\n", p->dev,tmp);
1857 */
1858         return res;
1859 }
1860
1861 static int vpb_hangup(struct ast_channel *ast)
1862 {
1863         struct vpb_pvt *p = (struct vpb_pvt *)ast->tech_pvt;
1864         VPB_EVENT je;
1865         char str[VPB_MAX_STR];
1866         int res =0 ;
1867
1868 /*
1869         if (option_verbose > 3) ast_verbose("%s: LOCKING in hangup \n", p->dev);
1870         if (option_verbose > 3) ast_verbose("%s: LOCKING in hangup count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1871         if (option_verbose > 3) ast_verbose("%s: LOCKING pthread_self(%d)\n", p->dev,pthread_self());
1872         ast_mutex_lock(&p->lock);
1873 */
1874         if (option_verbose > 1) 
1875                 ast_verbose(VERBOSE_PREFIX_2 "%s: Hangup requested\n", ast->name);
1876
1877         if (!ast->tech || !ast->tech_pvt) {
1878                 ast_log(LOG_WARNING, "%s: channel not connected?\n", ast->name);
1879                 res = ast_mutex_unlock(&p->lock);
1880 /*
1881                 if (option_verbose > 3) ast_verbose("%s: unLOCKING in hangup [%d]\n", p->dev,res);
1882 */
1883                 /* Free up ast dsp if we have one */
1884                 if ((use_ast_dtmfdet)&&(p->vad)) {
1885                         ast_dsp_free(p->vad);
1886                         p->vad = NULL;
1887                 }
1888                 return 0;
1889         }
1890
1891
1892
1893         /* Stop record */
1894         p->stopreads = 1;
1895         if( p->readthread ){
1896                 pthread_join(p->readthread, NULL); 
1897                 if(option_verbose>3) 
1898                         ast_verbose( VERBOSE_PREFIX_4 "%s: stopped record thread \n",ast->name);
1899         }
1900
1901         /* Stop play */
1902         if (p->lastoutput != -1) {
1903                 if(option_verbose>1) 
1904                         ast_verbose( VERBOSE_PREFIX_2 "%s: Ending play mode \n",ast->name);
1905                 vpb_play_terminate(p->handle);
1906                 ast_mutex_lock(&p->play_lock); {
1907                         vpb_play_buf_finish(p->handle);
1908                 } ast_mutex_unlock(&p->play_lock);
1909         }
1910
1911         if(option_verbose>3) 
1912                 ast_verbose( VERBOSE_PREFIX_4 "%s: Setting state down\n",ast->name);
1913         ast_setstate(ast,AST_STATE_DOWN);
1914
1915
1916 /*
1917         if (option_verbose > 3) ast_verbose("%s: LOCKING in hangup \n", p->dev);
1918         if (option_verbose > 3) ast_verbose("%s: LOCKING in hangup count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1919         if (option_verbose > 3) ast_verbose("%s: LOCKING pthread_self(%d)\n", p->dev,pthread_self());
1920 */
1921         ast_mutex_lock(&p->lock);
1922
1923         if (p->mode != MODE_FXO) {
1924                 /* station port. */
1925                 vpb_ring_station_async(p->handle, VPB_RING_STATION_OFF,0);      
1926                 if(p->state!=VPB_STATE_ONHOOK){
1927                         /* This is causing a "dial end" "play tone" loop
1928                         playtone(p->handle, &Busytone); 
1929                         p->state = VPB_STATE_PLAYBUSY;
1930                         if(option_verbose>4) 
1931                                 ast_verbose( VERBOSE_PREFIX_4 "%s: Station offhook[%d], playing busy tone\n",
1932                                                                 ast->name,p->state);
1933                         */
1934                 }
1935                 else {
1936                         stoptone(p->handle);
1937                 }
1938         } else {
1939                 stoptone(p->handle); /* Terminates any dialing */
1940                 vpb_sethook_sync(p->handle, VPB_ONHOOK);
1941                 p->state=VPB_STATE_ONHOOK;
1942         }
1943         while (VPB_OK==vpb_get_event_ch_async(p->handle,&je)){
1944                 if(option_verbose>3) {
1945                         vpb_translate_event(&je, str);
1946                         ast_verbose( VERBOSE_PREFIX_4 "%s: Flushing event [%d]=>%s\n",ast->name,je.type,str);
1947                 }
1948         }
1949
1950         p->readthread = 0;
1951         p->lastoutput = -1;
1952         p->lastinput = -1;
1953         p->last_ignore_dtmf = 1;
1954         p->ext[0]  = 0;
1955         p->dialtone = 0;
1956
1957         p->owner = NULL;
1958         ast->tech_pvt=NULL;
1959
1960         /* Free up ast dsp if we have one */
1961         if ((use_ast_dtmfdet)&&(p->vad)) {
1962                 ast_dsp_free(p->vad);
1963                 p->vad = NULL;
1964         }
1965
1966         ast_mutex_lock(&usecnt_lock); {
1967                 usecnt--;
1968         } ast_mutex_unlock(&usecnt_lock);
1969         ast_update_use_count();
1970
1971         if (option_verbose > 1)
1972                 ast_verbose(VERBOSE_PREFIX_2 "%s: Hangup complete\n", ast->name);
1973
1974         restart_monitor();
1975 /*
1976         if (option_verbose > 3) ast_verbose("%s: LOCKING in hangup count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1977 */
1978         res = ast_mutex_unlock(&p->lock);
1979 /*
1980         if (option_verbose > 3) ast_verbose("%s: unLOCKING in hangup [%d]\n", p->dev,res);
1981         if (option_verbose > 3) ast_verbose("%s: LOCKING in hangup count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1982 */
1983         return 0;
1984 }
1985
1986 static int vpb_answer(struct ast_channel *ast)
1987 {
1988         struct vpb_pvt *p = (struct vpb_pvt *)ast->tech_pvt;
1989         VPB_EVENT je;
1990         int ret;
1991         int res = 0;
1992 /*
1993         if (option_verbose > 3) ast_verbose("%s: LOCKING in answer \n", p->dev);
1994         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1995 */
1996         ast_mutex_lock(&p->lock);
1997
1998         if (option_verbose > 3)
1999                         ast_verbose(VERBOSE_PREFIX_4 "%s: Answering channel\n",p->dev);
2000
2001         if (p->mode == MODE_FXO){
2002                 if (option_verbose > 3)
2003                                 ast_verbose("%s: Disabling Loop Drop detection\n",p->dev);
2004                 vpb_disable_event(p->handle, VPB_MDROP);
2005         }
2006
2007         if (ast->_state != AST_STATE_UP) {
2008                 if (p->mode == MODE_FXO){
2009                         vpb_sethook_sync(p->handle, VPB_OFFHOOK);
2010                         p->state=VPB_STATE_OFFHOOK;
2011 /*                      vpb_sleep(500);
2012                         ret = vpb_get_event_ch_async(p->handle,&je);
2013                         if ((ret == VPB_OK)&&((je.type != VPB_DROP)&&(je.type != VPB_RING))){
2014                                 if (option_verbose > 3){
2015                                                 ast_verbose(VERBOSE_PREFIX_4 "%s: Answer collected a wrong event!!\n",p->dev);
2016                                 }
2017                                 vpb_put_event(&je);
2018                         }
2019 */
2020                 }
2021                 ast_setstate(ast, AST_STATE_UP);
2022
2023                 if(option_verbose>1) 
2024 /*
2025                         ast_verbose( VERBOSE_PREFIX_2 "%s: Answered call from %s on %s [%s]\n", p->dev, 
2026                                         p->owner->callerid, ast->name,(p->mode == MODE_FXO)?"FXO":"FXS"); 
2027 */
2028                         ast_verbose( VERBOSE_PREFIX_2 "%s: Answered call on %s [%s]\n", p->dev,
2029                                          ast->name,(p->mode == MODE_FXO)?"FXO":"FXS");
2030
2031                 ast->rings = 0;
2032                 if( !p->readthread ){
2033         /*              res = ast_mutex_unlock(&p->lock); */
2034         /*              ast_verbose("%s: unLOCKING in answer [%d]\n", p->dev,res); */
2035                         ast_pthread_create(&p->readthread, NULL, do_chanreads, (void *)p);
2036                 } else {
2037                         if(option_verbose>3) 
2038                                 ast_verbose(VERBOSE_PREFIX_4 "%s: Record thread already running!!\n",p->dev);
2039                 }
2040         } else {
2041                 if(option_verbose>3) {
2042                         ast_verbose(VERBOSE_PREFIX_4 "%s: Answered state is up\n",p->dev);
2043                 }
2044         /*      res = ast_mutex_unlock(&p->lock); */
2045         /*      ast_verbose("%s: unLOCKING in answer [%d]\n", p->dev,res); */
2046         }
2047         vpb_sleep(500);
2048         if (p->mode == MODE_FXO){
2049                 if (option_verbose > 3)
2050                                 ast_verbose("%s: Re-enabling Loop Drop detection\n",p->dev);
2051                 vpb_enable_event(p->handle,VPB_MDROP);
2052         }
2053         res = ast_mutex_unlock(&p->lock);
2054 /*
2055         if(option_verbose>3) ast_verbose("%s: unLOCKING in answer [%d]\n", p->dev,res);
2056 */
2057         return 0;
2058 }
2059
2060 static struct ast_frame  *vpb_read(struct ast_channel *ast)
2061 {
2062         struct vpb_pvt *p = (struct vpb_pvt *)ast->tech_pvt; 
2063         static struct ast_frame f = {AST_FRAME_NULL}; 
2064
2065         f.src = (char *)type;
2066         ast_log(LOG_NOTICE, "%s: vpb_read: should never be called!\n", p->dev);
2067         ast_verbose("%s: vpb_read: should never be called!\n", p->dev);
2068
2069         return &f;
2070 }
2071
2072 static inline int ast2vpbformat(int ast_format)
2073 {
2074         switch(ast_format) {
2075                 case AST_FORMAT_ALAW:
2076                         return VPB_ALAW;
2077                 case AST_FORMAT_SLINEAR:
2078                         return VPB_LINEAR;
2079                 case AST_FORMAT_ULAW:
2080                         return VPB_MULAW;
2081                 case AST_FORMAT_ADPCM:
2082                         return VPB_OKIADPCM;
2083                 default:
2084                         return -1;
2085         }
2086 }
2087
2088 static inline char * ast2vpbformatname(int ast_format)
2089 {
2090         switch(ast_format) {
2091                 case AST_FORMAT_ALAW:
2092                         return "AST_FORMAT_ALAW:VPB_ALAW";
2093                 case AST_FORMAT_SLINEAR:
2094                         return "AST_FORMAT_SLINEAR:VPB_LINEAR";
2095                 case AST_FORMAT_ULAW:
2096                         return "AST_FORMAT_ULAW:VPB_MULAW";
2097                 case AST_FORMAT_ADPCM:
2098                         return "AST_FORMAT_ADPCM:VPB_OKIADPCM";
2099                 default:
2100                         return "UNKN:UNKN";
2101         }
2102 }
2103
2104 static inline int astformatbits(int ast_format)
2105 {
2106         switch(ast_format) {
2107                 case AST_FORMAT_ALAW:
2108                 case AST_FORMAT_ULAW:
2109                         return 8;
2110                 case AST_FORMAT_SLINEAR:
2111                         return 16;
2112                 case AST_FORMAT_ADPCM:
2113                         return 4;
2114                 default:
2115                         return 8;
2116         }   
2117 }
2118
2119 int a_gain_vector(float g, short *v, int n) 
2120 {
2121         int i;
2122         float tmp;
2123         for ( i = 0; i<n; i++) {
2124                 tmp = g*v[i];
2125                 if (tmp > 32767.0)
2126                         tmp = 32767.0;
2127                 if (tmp < -32768.0)
2128                         tmp = -32768.0;
2129                 v[i] = (short)tmp;      
2130         }  
2131         return(i);
2132 }
2133
2134 /* Writes a frame of voice data to a VPB channel */
2135 static int vpb_write(struct ast_channel *ast, struct ast_frame *frame)
2136 {
2137         struct vpb_pvt *p = (struct vpb_pvt *)ast->tech_pvt; 
2138         int res = 0, fmt = 0;
2139         struct timeval play_buf_time_start,play_buf_time_finish;
2140 /*      ast_mutex_lock(&p->lock); */
2141         if(option_verbose>5) 
2142                 ast_verbose("%s: vpb_write: Writing to channel\n", p->dev);
2143
2144         if (frame->frametype != AST_FRAME_VOICE) {
2145                 if(option_verbose>3) 
2146                         ast_verbose("%s: vpb_write: Don't know how to handle from type %d\n", ast->name, frame->frametype);
2147 /*              ast_mutex_unlock(&p->lock); */
2148                 return 0;
2149         } else if (ast->_state != AST_STATE_UP) {
2150                 if(option_verbose>3) 
2151                         ast_verbose("%s: vpb_write: Attempt to Write frame type[%d]subclass[%d] on not up chan(state[%d])\n",ast->name, frame->frametype, frame->subclass,ast->_state);
2152                 p->lastoutput = -1;
2153 /*              ast_mutex_unlock(&p->lock); */
2154                 return 0;
2155         }
2156 /*      ast_log(LOG_DEBUG, "%s: vpb_write: Checked frame type..\n", p->dev); */
2157
2158         fmt = ast2vpbformat(frame->subclass);
2159         if (fmt < 0) {
2160                 ast_log(LOG_WARNING, "%s: vpb_write: Cannot handle frames of %d format!\n",ast->name, frame->subclass);
2161                 return -1;
2162         }
2163 /*
2164         ast_log(LOG_DEBUG, "%s: vpb_write: Checked frame format..\n", p->dev); 
2165 */
2166
2167         ast_mutex_lock(&p->play_lock);
2168
2169 /*
2170         ast_log(LOG_DEBUG, "%s: vpb_write: Got play lock..\n", p->dev); 
2171 */
2172
2173         /* Check if we have set up the play_buf */
2174         if (p->lastoutput == -1) {
2175                 vpb_play_buf_start(p->handle, fmt);
2176                 if(option_verbose>1) {
2177                         ast_verbose("%s: vpb_write: Starting play mode (codec=%d)[%s]\n",p->dev,fmt,ast2vpbformatname(frame->subclass));
2178                 }
2179         } else if (p->lastoutput != fmt) {
2180                 vpb_play_buf_finish(p->handle);
2181                 vpb_play_buf_start(p->handle, fmt);
2182                 if(option_verbose>1) 
2183                         ast_verbose("%s: vpb_write: Changed play format (%d=>%d)\n",p->dev,p->lastoutput,fmt);
2184         }
2185         p->lastoutput = fmt;
2186
2187
2188
2189         /* Apply extra gain ! */
2190         if( p->txswgain > MAX_VPB_GAIN )
2191                 a_gain_vector(p->txswgain - MAX_VPB_GAIN , (short*)frame->data, frame->datalen/sizeof(short));
2192
2193 /*      ast_log(LOG_DEBUG, "%s: vpb_write: Applied gain..\n", p->dev); */
2194
2195 /*      gettimeofday(&tv, NULL); */
2196 /*      return ((double)tv.tv_sec*1000)+((double)tv.tv_usec/1000); */
2197
2198         if ((p->read_state == 1)&&(p->play_buf_time<5)){
2199         gettimeofday(&play_buf_time_start,NULL);
2200         res = vpb_play_buf_sync(p->handle, (char*)frame->data, frame->datalen);
2201         if( (res == VPB_OK) && (option_verbose > 5) ) {
2202                 short * data = (short*)frame->data;
2203                 ast_verbose("%s: vpb_write: Wrote chan (codec=%d) %d %d\n", p->dev, fmt, data[0],data[1]);
2204         }
2205         gettimeofday(&play_buf_time_finish,NULL);
2206         if (play_buf_time_finish.tv_sec == play_buf_time_start.tv_sec){
2207                 p->play_buf_time=(int)((play_buf_time_finish.tv_usec-play_buf_time_start.tv_usec)/1000);
2208 /*              ast_log(LOG_DEBUG, "%s: vpb_write: Timing start(%d) finish(%d)\n", p->dev,play_buf_time_start.tv_usec,play_buf_time_finish.tv_usec); */
2209         }
2210         else {
2211                 p->play_buf_time=(int)((play_buf_time_finish.tv_sec - play_buf_time_start.tv_sec)*100)+(int)((play_buf_time_finish.tv_usec-play_buf_time_start.tv_usec)/1000);
2212         }
2213 /*      ast_log(LOG_DEBUG, "%s: vpb_write: Wrote data [%d](%d=>%s) to play_buf in [%d]ms..\n", p->dev,frame->datalen,fmt,ast2vpbformatname(frame->subclass),p->play_buf_time); */
2214         }
2215         else {
2216                 p->chuck_count++;
2217                 ast_log(LOG_DEBUG, "%s: vpb_write: Tossed data away, tooooo much data!![%d]\n", p->dev,p->chuck_count);
2218                 p->play_buf_time=0;
2219         }
2220
2221         ast_mutex_unlock(&p->play_lock);
2222 /*      ast_mutex_unlock(&p->lock); */
2223         if(option_verbose>5) 
2224                 ast_verbose("%s: vpb_write: Done Writing to channel\n", p->dev);
2225         return 0;
2226 }
2227
2228 /* Read monitor thread function. */
2229 static void *do_chanreads(void *pvt)
2230 {
2231         struct vpb_pvt *p = (struct vpb_pvt *)pvt;
2232         struct ast_frame *fr = &p->fr;
2233         char *readbuf = ((char *)p->buf) + AST_FRIENDLY_OFFSET;
2234         int bridgerec = 0;
2235         int afmt, readlen, res, fmt, trycnt=0;
2236         int ignore_dtmf;
2237         char * getdtmf_var = NULL;
2238
2239         fr->frametype = AST_FRAME_VOICE;
2240         fr->src = (char *)type;
2241         fr->mallocd = 0;
2242         fr->delivery.tv_sec = 0;
2243         fr->delivery.tv_usec = 0;
2244         fr->samples = VPB_SAMPLES;
2245         fr->offset = AST_FRIENDLY_OFFSET;
2246         memset(p->buf, 0, sizeof p->buf);
2247
2248         if (option_verbose > 2) {
2249                 ast_verbose("%s: chanreads: starting thread\n", p->dev);
2250         }  
2251         ast_mutex_lock(&p->record_lock);
2252
2253         p->stopreads = 0; 
2254         p->read_state = 1;
2255         while (!p->stopreads && p->owner) {
2256
2257                 if (option_verbose > 4)
2258                         ast_verbose("%s: chanreads: Starting cycle ...\n", p->dev);
2259                 if (option_verbose > 4)
2260                         ast_verbose("%s: chanreads: Checking bridge \n", p->dev);
2261                 if (p->bridge) {
2262                         if (p->bridge->c0 == p->owner && (p->bridge->flags & AST_BRIDGE_REC_CHANNEL_0))
2263                                 bridgerec = 1;
2264                         else if (p->bridge->c1 == p->owner && (p->bridge->flags & AST_BRIDGE_REC_CHANNEL_1))
2265                                 bridgerec = 1;
2266                         else 
2267                                 bridgerec = 0;
2268                 } else {
2269                         if (option_verbose > 4)
2270                                 ast_verbose("%s: chanreads: No native bridge.\n", p->dev);
2271                         if (p->owner->_bridge){
2272                                 if (option_verbose > 4){
2273                                         ast_verbose("%s: chanreads: Got Asterisk bridge with [%s].\n", p->dev,p->owner->_bridge->name);
2274                                 }
2275                                 bridgerec = 1;
2276                         }
2277                         else {
2278                                 bridgerec = 0;
2279                         }
2280                 }
2281
2282 /*              if ( (p->owner->_state != AST_STATE_UP) || !bridgerec) */
2283                 if ( (p->owner->_state != AST_STATE_UP) ) 
2284                 {
2285                         if (option_verbose > 4) {
2286                                 if (p->owner->_state != AST_STATE_UP)
2287                                         ast_verbose("%s: chanreads: Im not up[%d]\n", p->dev,p->owner->_state);
2288                                 else
2289                                         ast_verbose("%s: chanreads: No bridgerec[%d]\n", p->dev,bridgerec);
2290                         }  
2291                         vpb_sleep(10);
2292                         continue;
2293                 }
2294
2295                 /* Voicetronix DTMF detection can be triggered off ordinary speech
2296                  * This leads to annoying beeps during the conversation
2297                  * Avoid this problem by just setting VPB_GETDTMF when you want to listen for DTMF
2298                  */
2299                 /* ignore_dtmf = 1; */
2300                 ignore_dtmf = 0; /* set this to 1 to turn this feature on */
2301                 getdtmf_var = pbx_builtin_getvar_helper(p->owner,"VPB_GETDTMF");
2302                 if( getdtmf_var && ( strcasecmp( getdtmf_var, "yes" ) == 0 ) )
2303                         ignore_dtmf = 0;
2304
2305                 if(( ignore_dtmf != p->last_ignore_dtmf ) &&(!use_ast_dtmfdet)){
2306                         if(option_verbose>1) 
2307                                 ast_verbose( VERBOSE_PREFIX_2 "%s:Now %s DTMF \n",
2308                                         p->dev, ignore_dtmf ? "ignoring" : "listening for");
2309                         vpb_set_event_mask(p->handle, ignore_dtmf ? VPB_EVENTS_NODTMF : VPB_EVENTS_ALL );
2310                 }
2311                 p->last_ignore_dtmf = ignore_dtmf;
2312
2313                 /* Play DTMF digits here to avoid problem you get if playing a digit during 
2314                  * a record operation
2315                  */
2316                 if (option_verbose > 5) {
2317                         ast_verbose("%s: chanreads: Checking dtmf's \n", p->dev);
2318                 }  
2319                 ast_mutex_lock(&p->play_dtmf_lock);
2320                 if( p->play_dtmf[0] ) {
2321                         /* Try to ignore DTMF event we get after playing digit */
2322                         /* This DTMF is played by asterisk and leads to an annoying trailing beep on CISCO phones */
2323                         if( !ignore_dtmf) 
2324                                 vpb_set_event_mask(p->handle, VPB_EVENTS_NODTMF );
2325                         if (p->bridge == NULL){
2326                                 vpb_dial_sync(p->handle,p->play_dtmf);
2327                                 if(option_verbose>1) 
2328                                         ast_verbose( VERBOSE_PREFIX_2 "%s: chanreads: Played DTMF %s\n",p->dev,p->play_dtmf);
2329                         }
2330                         else {
2331                                 if (option_verbose > 1) 
2332                                         ast_verbose(VERBOSE_PREFIX_2 "%s: chanreads: Not playing DTMF frame on native bridge\n", p->dev);
2333                         }
2334                         p->play_dtmf[0] = '\0';
2335                         ast_mutex_unlock(&p->play_dtmf_lock);
2336                         vpb_sleep(700); /* Long enough to miss echo and DTMF event */
2337                         if( !ignore_dtmf) 
2338                                 vpb_set_event_mask(p->handle, VPB_EVENTS_ALL );
2339                         continue;
2340                 }
2341                 ast_mutex_unlock(&p->play_dtmf_lock);
2342
2343 /*              afmt = (p->owner) ? p->owner->rawreadformat : AST_FORMAT_SLINEAR; */
2344                 if (p->owner){
2345                         afmt = p->owner->rawreadformat;
2346 /*                      ast_log(LOG_DEBUG,"%s: Record using owner format [%s]\n", p->dev, ast2vpbformatname(afmt)); */
2347                 }
2348                 else {
2349                         afmt = AST_FORMAT_SLINEAR;
2350 /*                      ast_log(LOG_DEBUG,"%s: Record using default format [%s]\n", p->dev, ast2vpbformatname(afmt)); */
2351                 }
2352                 fmt = ast2vpbformat(afmt);
2353                 if (fmt < 0) {
2354                         ast_log(LOG_WARNING,"%s: Record failure (unsupported format %d)\n", p->dev, afmt);
2355                         return NULL;
2356                 }
2357                 readlen = VPB_SAMPLES * astformatbits(afmt) / 8;
2358
2359                 if (p->lastinput == -1) {
2360                         vpb_record_buf_start(p->handle, fmt);
2361                         vpb_reset_record_fifo_alarm(p->handle);
2362                         if(option_verbose>1) 
2363                                 ast_verbose( VERBOSE_PREFIX_2 "%s: Starting record mode (codec=%d)[%s]\n",p->dev,fmt,ast2vpbformatname(afmt));
2364                 } else if (p->lastinput != fmt) {
2365                         vpb_record_buf_finish(p->handle);
2366                         vpb_record_buf_start(p->handle, fmt);
2367                         if(option_verbose>1) 
2368                                 ast_verbose( VERBOSE_PREFIX_2 "%s: Changed record format (%d=>%d)\n",p->dev,p->lastinput,fmt);
2369                 }
2370                 p->lastinput = fmt;
2371
2372                 /* Read only if up and not bridged, or a bridge for which we can read. */
2373                 if (option_verbose > 5) {
2374                         ast_verbose("%s: chanreads: getting buffer!\n", p->dev);
2375                 }  
2376                 if( (res = vpb_record_buf_sync(p->handle, readbuf, readlen) ) == VPB_OK ) {
2377                         if (option_verbose > 5) {
2378                                 ast_verbose("%s: chanreads: got buffer!\n", p->dev);
2379                         }  
2380                         /* Apply extra gain ! */
2381                         if( p->rxswgain > MAX_VPB_GAIN )
2382                                 a_gain_vector(p->rxswgain - MAX_VPB_GAIN , (short*)readbuf, readlen/sizeof(short));
2383                         if (option_verbose > 5) {
2384                                 ast_verbose("%s: chanreads: applied gain\n", p->dev);
2385                         }  
2386
2387                         fr->subclass = afmt;
2388                         fr->data = readbuf;
2389                         fr->datalen = readlen;
2390                         fr->frametype = AST_FRAME_VOICE;
2391
2392                         if ((use_ast_dtmfdet)&&(p->vad)){
2393                                 fr = ast_dsp_process(p->owner,p->vad,fr);
2394                                 if (fr && (fr->frametype == AST_FRAME_DTMF))
2395                                         ast_log(LOG_DEBUG, "%s: chanreads: Detected DTMF '%c'\n",p->dev, fr->subclass);
2396                                 if (fr->subclass == 'm'){
2397                                         /* conf mute request */
2398                                         fr->frametype = AST_FRAME_NULL;
2399                                         fr->subclass = 0;
2400                                 }
2401                                 else if (fr->subclass == 'u'){
2402                                         /* Unmute */
2403                                         fr->frametype = AST_FRAME_NULL;
2404                                         fr->subclass = 0;
2405                                 }
2406                                 else if (fr->subclass == 'f'){
2407                                 }
2408                         }
2409                         /* Using trylock here to prevent deadlock when channel is hungup
2410                          * (ast_hangup() immediately gets lock)
2411                          */
2412                         if (p->owner && !p->stopreads ) {
2413                                 if (option_verbose > 5) {
2414                                         ast_verbose("%s: chanreads: queueing buffer on read frame q (state[%d])\n", p->dev,p->owner->_state);
2415                                 }  
2416                                 do {
2417                                         res = ast_mutex_trylock(&p->owner->lock);
2418                                         trycnt++;
2419                                 } while((res !=0)&&(trycnt<300));
2420                                 if (res==0)  {
2421                                         ast_queue_frame(p->owner, fr);
2422                                         ast_mutex_unlock(&p->owner->lock);
2423                                 } else {
2424                                         if (option_verbose > 4) 
2425                                                 ast_verbose("%s: chanreads: Couldnt get lock after %d tries!\n", p->dev,trycnt);
2426                                 }
2427                                 trycnt=0;
2428                                 
2429 /*
2430                                 res = ast_mutex_trylock(&p->owner->lock);
2431                                 if (res==0)  {
2432                                         ast_queue_frame(p->owner, fr);
2433                                         ast_mutex_unlock(&p->owner->lock);
2434                                 } else {
2435                                         if (res == EINVAL )
2436                                                 if (option_verbose > 4) ast_verbose("%s: chanreads: try owner->lock gave me EINVAL[%d]\n", p->dev,res);
2437                                         else if (res == EBUSY )
2438                                                 if (option_verbose > 4) ast_verbose("%s: chanreads: try owner->lock gave me EBUSY[%d]\n", p->dev,res);
2439                                         while(res !=0){
2440                                         res = ast_mutex_trylock(&p->owner->lock);
2441                                         }
2442                                         if (res==0)  {
2443                                                 ast_queue_frame(p->owner, fr);
2444                                                 ast_mutex_unlock(&p->owner->lock);
2445                                         }
2446                                         else {
2447                                                 if (res == EINVAL )
2448                                                         if (option_verbose > 4) ast_verbose("%s: chanreads: try owner->lock gave me EINVAL[%d]\n", p->dev,res);
2449                                                 else if (res == EBUSY )
2450                                                         if (option_verbose > 4) ast_verbose("%s: chanreads: try owner->lock gave me EBUSY[%d]\n", p->dev,res);
2451                                                 if (option_verbose > 4) ast_verbose("%s: chanreads: Couldnt get lock on owner[%s][%d][%d] channel to send frame!\n", p->dev,p->owner->name,(int)p->owner->lock.__m_owner,(int)p->owner->lock.__m_count);
2452                                         }
2453                                 }
2454 */
2455                                 if (option_verbose > 6) {
2456                                         short * data = (short*)readbuf;
2457                                         ast_verbose("%s: Read channel (codec=%d) %d %d\n", p->dev, fmt, data[0], data[1] );
2458                                 }  
2459                         }
2460                         else {
2461                                 if (option_verbose > 4) {
2462                                         ast_verbose("%s: p->stopreads[%d] p->owner[%p]\n", p->dev, p->stopreads,(void *)p->owner);
2463                                 }  
2464                         }
2465                 } else {
2466                         ast_log(LOG_WARNING,"%s: Record failure (%s)\n", p->dev, vpb_strerror(res));
2467                         vpb_record_buf_finish(p->handle);
2468                         vpb_record_buf_start(p->handle, fmt);
2469                 }
2470                 if (option_verbose > 4)
2471                         ast_verbose("%s: chanreads: Finished cycle...\n", p->dev);
2472         }
2473         p->read_state=0;
2474
2475         /* When stopreads seen, go away! */
2476         vpb_record_buf_finish(p->handle);
2477         p->read_state=0;
2478         ast_mutex_unlock(&p->record_lock);
2479
2480         if (option_verbose > 1)
2481                 ast_verbose(VERBOSE_PREFIX_2 "%s: Ending record mode (%d/%s)\n",
2482                          p->dev, p->stopreads, p->owner? "yes" : "no");     
2483         return NULL;
2484 }
2485
2486 static struct ast_channel *vpb_new(struct vpb_pvt *me, int state, char *context)
2487 {
2488         struct ast_channel *tmp; 
2489         char cid_num[256];
2490         char cid_name[256];
2491
2492         if (me->owner) {
2493             ast_log(LOG_WARNING, "Called vpb_new on owned channel (%s) ?!\n", me->dev);
2494             return NULL;
2495         }
2496         if (option_verbose > 3)
2497                 ast_verbose("%s: New call for context [%s]\n",me->dev,context);
2498             
2499         tmp = ast_channel_alloc(1);
2500         if (tmp) {
2501                 tmp->tech = &vpb_tech;
2502                 strncpy(tmp->name, me->dev, sizeof(tmp->name) - 1);
2503                 tmp->type = type;
2504                 
2505                 tmp->callgroup = me->callgroup;
2506                 tmp->pickupgroup = me->pickupgroup;
2507                
2508                 /* Linear is the preferred format. Although Voicetronix supports other formats
2509                  * they are all converted to/from linear in the vpb code. Best for us to use
2510                  * linear since we can then adjust volume in this modules.
2511                  */
2512                 tmp->nativeformats = prefformat;
2513                 tmp->rawreadformat = AST_FORMAT_SLINEAR;
2514                 tmp->rawwriteformat =  AST_FORMAT_SLINEAR;
2515                 ast_setstate(tmp, state);
2516                 if (state == AST_STATE_RING) {
2517                         tmp->rings = 1;
2518                         cid_name[0] = '\0';
2519                         cid_num[0] = '\0';
2520                         ast_callerid_split(me->callerid, cid_name, sizeof(cid_name), cid_num, sizeof(cid_num));
2521                         ast_set_callerid(tmp, cid_num, cid_name, cid_num);
2522                 }
2523                 tmp->tech_pvt = me;
2524                 
2525                 strncpy(tmp->context, context, sizeof(tmp->context)-1);
2526                 if (strlen(me->ext))
2527                         strncpy(tmp->exten, me->ext, sizeof(tmp->exten)-1);
2528                 else
2529                         strncpy(tmp->exten, "s",  sizeof(tmp->exten) - 1);
2530                 if (strlen(me->language))
2531                         strncpy(tmp->language, me->language, sizeof(tmp->language)-1);
2532
2533                 me->owner = tmp;
2534      
2535                 me->bridge = NULL;
2536                 me->lastoutput = -1;
2537                 me->lastinput = -1;
2538                 me->last_ignore_dtmf = 1;
2539                 me->readthread = 0;
2540                 me->play_dtmf[0] = '\0';
2541                 me->faxhandled =0;
2542                 
2543                 me->lastgrunt  = get_time_in_ms(); /* Assume at least one grunt tone seen now. */
2544
2545                 ast_mutex_lock(&usecnt_lock);
2546                 usecnt++;
2547                 ast_mutex_unlock(&usecnt_lock);
2548                 ast_update_use_count();
2549                 if (state != AST_STATE_DOWN) {
2550                         if ((me->mode != MODE_FXO)&&(state != AST_STATE_UP)){
2551                                 vpb_answer(tmp);
2552                         }
2553                         if (ast_pbx_start(tmp)) {
2554                                 ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
2555                                 ast_hangup(tmp);
2556                         }
2557                 }
2558         } else {
2559                 ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
2560         }
2561         return tmp;
2562 }
2563
2564 static struct ast_channel *vpb_request(const char *type, int format, void *data, int *cause) 
2565 {
2566         int oldformat;
2567         struct vpb_pvt *p;
2568         struct ast_channel *tmp = NULL;
2569         char *name = strdup(data ? (char *)data : "");
2570         char *s, *sepstr;
2571         int group=-1;
2572
2573         oldformat = format;
2574         format &= prefformat;
2575         if (!format) {
2576                 ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", oldformat);
2577                 return NULL;
2578         }
2579
2580         sepstr = name;
2581         s = strsep(&sepstr, "/"); /* Handle / issues */
2582         if (!s) 
2583                 s = "";
2584         /* Check if we are looking for a group */
2585         if (toupper(name[0]) == 'G' || toupper(name[0])=='R') {
2586                 group=atoi(name+1);     
2587         }
2588         /* Search for an unowned channel */
2589         ast_mutex_lock(&iflock); {
2590                 p = iflist;
2591                 while(p) {
2592                         if (group == -1){
2593                                 if (strncmp(s, p->dev + 4, sizeof p->dev) == 0) {
2594                                         if (!p->owner) {
2595                                                 tmp = vpb_new(p, AST_STATE_DOWN, p->context);
2596                                                 break;
2597                                         }
2598                                 }
2599                         }
2600                         else {
2601                                 if ((p->group == group) && (!p->owner)) {
2602                                         tmp = vpb_new(p, AST_STATE_DOWN, p->context);
2603                                         break;
2604                                 }
2605                         }
2606                         p = p->next;
2607                 }
2608         } ast_mutex_unlock(&iflock);
2609
2610
2611         if (option_verbose > 1) 
2612                 ast_verbose(VERBOSE_PREFIX_2 " %s requested, got: [%s]\n",
2613                 name, tmp ? tmp->name : "None");
2614
2615         free(name);
2616
2617         restart_monitor();
2618         return tmp;
2619 }
2620
2621 static float parse_gain_value(char *gain_type, char *value)
2622 {
2623         float gain;
2624
2625         /* try to scan number */
2626         if (sscanf(value, "%f", &gain) != 1)
2627         {
2628                 ast_log(LOG_ERROR, "Invalid %s value '%s' in '%s' config\n", value, gain_type, config);
2629                 return DEFAULT_GAIN;
2630         }
2631
2632
2633         /* percentage? */
2634         /*if (value[strlen(value) - 1] == '%') */
2635         /*      return gain / (float)100; */
2636
2637         return gain;
2638 }
2639
2640 int load_module()
2641 {
2642         struct ast_config *cfg;
2643         struct ast_variable *v;
2644         struct vpb_pvt *tmp;
2645         int board = 0, group = 0;
2646         ast_group_t     callgroup = 0;
2647         ast_group_t     pickupgroup = 0;
2648         int mode = MODE_IMMEDIATE;
2649         float txgain = DEFAULT_GAIN, rxgain = DEFAULT_GAIN; 
2650         float txswgain = 0, rxswgain = 0; 
2651         int got_gain=0;
2652         int first_channel = 1;
2653         int echo_cancel = DEFAULT_ECHO_CANCEL;
2654         int error = 0; /* Error flag */
2655         int bal1 = -1; /* Special value - means do not set */
2656         int bal2 = -1; 
2657         int bal3 = -1;
2658         char * callerid = NULL;
2659
2660         cfg = ast_config_load(config);
2661
2662         /* We *must* have a config file otherwise stop immediately */
2663         if (!cfg) {
2664                 ast_log(LOG_ERROR, "Unable to load config %s\n", config);
2665                 return -1;
2666         }  
2667
2668         vpb_seterrormode(VPB_ERROR_CODE);
2669
2670         ast_mutex_lock(&iflock); {
2671                 v = ast_variable_browse(cfg, "general");
2672                 while (v){
2673                         if (strcasecmp(v->name, "cards") == 0) {
2674                                 ast_log(LOG_NOTICE,"VPB Driver configured to use [%d] cards\n",atoi(v->value));
2675                         }
2676                         else if (strcasecmp(v->name, "indication") == 0) {
2677                                 use_ast_ind = 1;
2678                                 ast_log(LOG_NOTICE,"VPB driver using Asterisk Indication functions!\n");
2679                         }
2680                         else if (strcasecmp(v->name, "break-for-dtmf") == 0) {
2681                                 if (ast_true(v->value)){
2682                                         break_for_dtmf = 1;
2683                                 }
2684                                 else {
2685                                         break_for_dtmf = 0;
2686                                         ast_log(LOG_NOTICE,"VPB driver not stopping for DTMF's in native bridge\n");
2687                                 }
2688                         }
2689                         else if (strcasecmp(v->name, "ast-dtmf") == 0) {
2690                                 use_ast_dtmf = 1;
2691                                 ast_log(LOG_NOTICE,"VPB driver using Asterisk DTMF play functions!\n");
2692                         }
2693                         else if (strcasecmp(v->name, "ast-dtmf-det") == 0) {
2694                                 use_ast_dtmfdet = 1;
2695                                 ast_log(LOG_NOTICE,"VPB driver using Asterisk DTMF detection functions!\n");
2696                         }
2697                         else if (strcasecmp(v->name, "relaxdtmf") == 0) {
2698                                 relaxdtmf = 1;
2699                                 ast_log(LOG_NOTICE,"VPB driver using Relaxed DTMF with Asterisk DTMF detections functions!\n");
2700                         }
2701                         else if (strcasecmp(v->name, "ecsuppthres") ==0) {
2702                                 ec_supp_threshold = atoi(v->value);
2703                         }
2704                         else if (strcasecmp(v->name, "dtmfidd") ==0) {
2705                                 dtmf_idd = atoi(v->value);
2706                                 ast_log(LOG_NOTICE,"VPB Driver setting DTMF IDD to [%d]ms\n",dtmf_idd);
2707                         }
2708                         v = v->next;
2709                 }
2710         
2711                 v = ast_variable_browse(cfg, "interfaces");
2712                 while(v) {
2713                         /* Create the interface list */
2714                         if (strcasecmp(v->name, "board") == 0) {
2715                                 board = atoi(v->value);
2716                         } else  if (strcasecmp(v->name, "group") == 0){
2717                                 group = atoi(v->value);
2718                         } else  if (strcasecmp(v->name, "callgroup") == 0){
2719                                 callgroup = ast_get_group(v->value);
2720                         } else  if (strcasecmp(v->name, "pickupgroup") == 0){
2721                                 pickupgroup = ast_get_group(v->value);
2722                         } else  if (strcasecmp(v->name, "useloopdrop") == 0){
2723                                 UseLoopDrop = atoi(v->value);
2724                         } else  if (strcasecmp(v->name, "usenativebridge") == 0){
2725                                 UseNativeBridge = atoi(v->value);
2726                         } else if (strcasecmp(v->name, "channel") == 0) {
2727                                 int channel = atoi(v->value);
2728                                 tmp = mkif(board, channel, mode, got_gain, txgain, rxgain, txswgain, rxswgain, bal1, bal2, bal3, callerid, echo_cancel,group,callgroup,pickupgroup);
2729                                 if (tmp) {
2730                                         if(first_channel) {
2731                                                 mkbrd( tmp->vpb_model, echo_cancel );
2732                                                 first_channel = 0;
2733                                         }
2734                                         tmp->next = iflist;
2735                                         iflist = tmp;
2736                                 } else {
2737                                         ast_log(LOG_ERROR, "Unable to register channel '%s'\n", v->value);
2738                                         error = -1;
2739                                         goto done;
2740                                 }
2741                         } else if (strcasecmp(v->name, "language") == 0) {
2742                                 strncpy(language, v->value, sizeof(language)-1);
2743                         } else if (strcasecmp(v->name, "callerid") == 0) {
2744                                 callerid = strdup(v->value);
2745                         } else if (strcasecmp(v->name, "mode") == 0) {
2746                                 if (strncasecmp(v->value, "di", 2) == 0) 
2747                                         mode = MODE_DIALTONE;
2748                                 else if (strncasecmp(v->value, "im", 2) == 0)
2749                                         mode = MODE_IMMEDIATE;
2750                                 else if (strncasecmp(v->value, "fx", 2) == 0)
2751                                         mode = MODE_FXO;
2752                                 else
2753                                         ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
2754                         } else if (!strcasecmp(v->name, "context")) {
2755                                 strncpy(context, v->value, sizeof(context)-1);
2756                         } else if (!strcasecmp(v->name, "echocancel")) {
2757                                 if (!strcasecmp(v->value, "off")) 
2758                                         echo_cancel = 0;
2759                         } else if (strcasecmp(v->name, "txgain") == 0) {
2760                                 txswgain = parse_gain_value(v->name, v->value);
2761                                 got_gain |=VPB_GOT_TXSWG;
2762                         } else if (strcasecmp(v->name, "rxgain") == 0) {
2763                                 rxswgain = parse_gain_value(v->name, v->value);
2764                                 got_gain |=VPB_GOT_RXSWG;
2765                         } else if (strcasecmp(v->name, "txhwgain") == 0) {
2766                                 txgain = parse_gain_value(v->name, v->value);
2767                                 got_gain |=VPB_GOT_TXHWG;
2768                         } else if (strcasecmp(v->name, "rxhwgain") == 0) {
2769                                 rxgain = parse_gain_value(v->name, v->value);
2770                                 got_gain |=VPB_GOT_RXHWG;
2771                         } else if (strcasecmp(v->name, "bal1") == 0) {
2772                                 bal1 = strtol(v->value, NULL, 16);
2773                                 if(bal1<0 || bal1>255) {
2774                                         ast_log(LOG_WARNING, "Bad bal1 value: %d\n", bal1);
2775                                         bal1 = -1;
2776                                 }
2777                         } else if (strcasecmp(v->name, "bal2") == 0) {
2778                                 bal2 = strtol(v->value, NULL, 16);
2779                                 if(bal2<0 || bal2>255) {
2780                                         ast_log(LOG_WARNING, "Bad bal2 value: %d\n", bal2);
2781                                         bal2 = -1;
2782                                 }
2783                         } else if (strcasecmp(v->name, "bal3") == 0) {
2784                                 bal3 = strtol(v->value, NULL, 16);
2785                                 if(bal3<0 || bal3>255) {
2786                                         ast_log(LOG_WARNING, "Bad bal3 value: %d\n", bal3);
2787                                         bal3 = -1;
2788                                 }
2789                         } else if (strcasecmp(v->name, "grunttimeout") == 0) {
2790                                 gruntdetect_timeout = 1000*atoi(v->value);
2791                         }
2792                         v = v->next;
2793                 }
2794
2795                 if (gruntdetect_timeout < 1000)
2796                         gruntdetect_timeout = 1000;
2797
2798                 done: (void)0;
2799         } ast_mutex_unlock(&iflock);
2800
2801         ast_config_destroy(cfg);
2802
2803         if (!error && ast_channel_register(&vpb_tech) != 0) {
2804                 ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
2805                 error = -1;
2806         }
2807
2808
2809         if (error)
2810                 unload_module();
2811         else 
2812                 restart_monitor(); /* And start the monitor for the first time */
2813
2814         return error;
2815 }
2816
2817
2818 int unload_module()
2819 {
2820         struct vpb_pvt *p;
2821         /* First, take us out of the channel loop */
2822         ast_channel_unregister(&vpb_tech);
2823
2824         ast_mutex_lock(&iflock); {
2825                 /* Hangup all interfaces if they have an owner */
2826                 p = iflist;
2827                 while(p) {
2828                         if (p->owner)
2829                                 ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
2830                         p = p->next;
2831                 }
2832                 iflist = NULL;
2833         } ast_mutex_unlock(&iflock);
2834
2835         ast_mutex_lock(&monlock); {
2836                 if (mthreadactive > -1) {
2837                         pthread_cancel(monitor_thread);
2838                         pthread_join(monitor_thread, NULL);
2839                 }
2840                 mthreadactive = -2;
2841         } ast_mutex_unlock(&monlock);
2842
2843         ast_mutex_lock(&iflock); {
2844                 /* Destroy all the interfaces and free their memory */
2845
2846                 while(iflist) {
2847                         p = iflist;                 
2848                         ast_mutex_destroy(&p->lock);
2849                         pthread_cancel(p->readthread);
2850                         ast_mutex_destroy(&p->owner_lock);
2851                         ast_mutex_destroy(&p->record_lock);
2852                         ast_mutex_destroy(&p->play_lock);
2853                         ast_mutex_destroy(&p->play_dtmf_lock);
2854                         p->readthread = 0;
2855
2856                         vpb_close(p->handle);
2857
2858                         iflist = iflist->next;
2859
2860                         free(p);
2861                 }
2862                 iflist = NULL;
2863         } ast_mutex_unlock(&iflock);
2864
2865         ast_mutex_lock(&bridge_lock); {
2866                 memset(bridges, 0, sizeof bridges);          
2867         } ast_mutex_unlock(&bridge_lock);
2868         ast_mutex_destroy(&bridge_lock);
2869         for(int i = 0; i < max_bridges; i++ ) {
2870                 ast_mutex_destroy(&bridges[i].lock);
2871                 pthread_cond_destroy(&bridges[i].cond);
2872         }
2873         free(bridges);
2874
2875         return 0;
2876 }
2877
2878 int usecount()
2879 {
2880         int res;
2881         ast_mutex_lock(&usecnt_lock);
2882         res = usecnt;
2883         ast_mutex_unlock(&usecnt_lock);
2884         return res;
2885 }
2886
2887 char *description()
2888 {
2889         return (char *) desc;
2890 }
2891
2892 char *key()
2893 {
2894         return ASTERISK_GPL_KEY;
2895 }
2896
2897 /**/
2898 #if defined(__cplusplus) || defined(c_plusplus)
2899  }
2900 #endif
2901 /**/