/ fixed operation with record_play
[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, 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 #include <stdio.h>
22 #include <string.h>
23 //#include <asterisk/lock.h>
24 #include <asterisk/utils.h>
25 #include <asterisk/channel.h>
26 #include <asterisk/channel_pvt.h>
27 #include <asterisk/config.h>
28 #include <asterisk/logger.h>
29 #include <asterisk/module.h>
30 #include <asterisk/pbx.h>
31 #include <asterisk/options.h>
32 #include <sys/socket.h>
33 #include <sys/time.h>
34 #include <errno.h>
35 #include <unistd.h>
36 #include <stdlib.h>
37 #include <arpa/inet.h>
38 #include <fcntl.h>
39 #include <sys/ioctl.h>
40 #include <ctype.h>
41
42 #include <vpbapi.h>
43 #include <assert.h>
44
45 #ifdef pthread_create
46 #undef pthread_create
47 #endif
48
49 #define DEFAULT_GAIN 0
50 #define DEFAULT_ECHO_CANCEL 1
51   
52 #define VPB_SAMPLES 160 
53 #define VPB_MAX_BUF VPB_SAMPLES*4 + AST_FRIENDLY_OFFSET
54
55 #define VPB_NULL_EVENT 200
56
57 #define VPB_WAIT_TIMEOUT 4000
58
59 #define MAX_VPB_GAIN 12.0
60
61 /*
62 #if defined(__cplusplus) || defined(c_plusplus)
63  extern "C" {
64 #endif
65 */
66
67 static char *desc = "VoiceTronix V6PCI/V12PCI/V4PCI  API Support";
68 static char *type = "vpb";
69 static char *tdesc = "Standard VoiceTronix API Driver";
70 static char *config = "vpb.conf";
71
72 /* Default context for dialtone mode */
73 static char context[AST_MAX_EXTENSION] = "default";
74
75 /* Default language */
76 static char language[MAX_LANGUAGE] = "";
77 static int usecnt =0;
78
79 static int gruntdetect_timeout = 3600000; /* Grunt detect timeout is 1hr. */
80
81 static const int prefformat = AST_FORMAT_SLINEAR;
82
83 AST_MUTEX_DEFINE_STATIC(usecnt_lock);
84
85 /* Protect the interface list (of vpb_pvt's) */
86 AST_MUTEX_DEFINE_STATIC(iflock);
87
88 /* Protect the monitoring thread, so only one process can kill or start it, and not
89    when it's doing something critical. */
90 AST_MUTEX_DEFINE_STATIC(monlock);
91
92 /* This is the thread for the monitor which checks for input on the channels
93    which are not currently in use.  */
94 static pthread_t monitor_thread;
95
96 static int mthreadactive = -1; /* Flag for monitoring monitorthread.*/
97
98
99 static int restart_monitor(void);
100
101 /* The private structures of the VPB channels are 
102    linked for selecting outgoing channels */
103    
104 #define MODE_DIALTONE   1
105 #define MODE_IMMEDIATE  2
106 #define MODE_FXO        3
107
108 /* Pick a country or add your own! */
109 /* These are the tones that are played to the user */
110 #define TONES_AU
111 #ifdef TONES_AU
112 static VPB_TONE Dialtone     = {440,    440,    440,    -10,    -10,    -10,    5000,   0   };
113 static VPB_TONE Busytone     = {470,    0,      0,      -10,    -100,   -100,   5000,   0 };
114 static VPB_TONE Ringbacktone = {400,    50,     440,    -10,    -10,    -10,    1400,   800 };
115 #endif
116 /*
117 #define TONES_USA
118 #ifdef TONES_USA
119 static VPB_TONE Dialtone     = {425,   0,   0, -16,  -100, -100, 10000,    0};
120 static VPB_TONE Busytone     = {425,   0,   0, -10,  -100, -100,   500,  500};
121 static VPB_TONE Ringbacktone = {400,   425,   450, -20,  -20, -20,  1000, 1000};
122 #endif
123 */
124
125 /* grunt tone defn's */
126 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 } } };
127 static VPB_DETECT toned_ungrunt = { 2, VPB_GRUNT, 1, 2000, 1, 0, 0, -40, 0, 0, 30, 40, { { 0, 0, 0, 0 } } };
128
129 /* Use loop drop detection */
130 static int UseLoopDrop=1;
131
132 /* To use or not to use Native bridging */
133 static int UseNativeBridge=1;
134
135 #define TIMER_PERIOD_RINGBACK 2000
136 #define TIMER_PERIOD_BUSY 700
137           
138 #define VPB_EVENTS_ALL (VPB_MRING|VPB_MDIGIT|VPB_MDTMF|VPB_MTONEDETECT|VPB_MTIMEREXP|VPB_MPLAY_UNDERFLOW \
139                         |VPB_MRECORD_OVERFLOW|VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
140                         |VPB_MRING_OFF|VPB_MDROP|VPB_MSTATION_FLASH)
141 #define VPB_EVENTS_NODROP (VPB_MRING|VPB_MDIGIT|VPB_MDTMF|VPB_MTONEDETECT|VPB_MTIMEREXP|VPB_MPLAY_UNDERFLOW \
142                         |VPB_MRECORD_OVERFLOW|VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
143                         |VPB_MRING_OFF|VPB_MSTATION_FLASH)
144 #define VPB_EVENTS_NODTMF (VPB_MRING|VPB_MDIGIT|VPB_MTONEDETECT|VPB_MTIMEREXP|VPB_MPLAY_UNDERFLOW \
145                         |VPB_MRECORD_OVERFLOW|VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
146                         |VPB_MRING_OFF|VPB_MDROP|VPB_MSTATION_FLASH)
147 #define VPB_EVENTS_STAT (VPB_MRING|VPB_MDIGIT|VPB_MDTMF|VPB_MTONEDETECT|VPB_MTIMEREXP|VPB_MPLAY_UNDERFLOW \
148                         |VPB_MRECORD_OVERFLOW|VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
149                         |VPB_MRING_OFF|VPB_MSTATION_FLASH)
150
151
152 // Dialing parameters for Australia
153 //#define DIAL_WITH_CALL_PROGRESS
154 VPB_TONE_MAP DialToneMap[] = {  { VPB_BUSY_AUST, VPB_CALL_DISCONNECT, 0 },
155                                 { VPB_DIAL, VPB_CALL_DIALTONE, 0 },
156                                 { VPB_RINGBACK_308, VPB_CALL_RINGBACK, 0 },
157                                 { VPB_BUSY_AUST, VPB_CALL_BUSY, 0 },
158                                 { VPB_GRUNT, VPB_CALL_GRUNT, 0 },
159                                 { 0, 0, 1 } };
160 #define VPB_DIALTONE_WAIT 2000 /* Wait up to 2s for a dialtone */
161 #define VPB_RINGWAIT 4000 /* Wait up to 4s for ring tone after dialing */
162 #define VPB_CONNECTED_WAIT 4000 /* If no ring tone detected for 4s then consider call connected */
163 #define TIMER_PERIOD_NOANSWER 120000 /* Let it ring for 120s before deciding theres noone there */
164
165 #define MAX_BRIDGES_V4PCI 2
166 #define MAX_BRIDGES_V12PCI 128
167
168 /* port states */
169 #define VPB_STATE_ONHOOK        0
170 #define VPB_STATE_OFFHOOK       1
171 #define VPB_STATE_DIALLING      2
172 #define VPB_STATE_JOINED        3
173 #define VPB_STATE_GETDTMF       4
174 #define VPB_STATE_PLAYDIAL      5
175 #define VPB_STATE_PLAYBUSY      6
176 #define VPB_STATE_PLAYRING      7
177
178
179 typedef struct  {
180         int inuse;
181         struct ast_channel *c0, *c1, **rc;
182         struct ast_frame **fo;
183         int flags;
184         ast_mutex_t lock;
185         pthread_cond_t cond;
186         int endbridge;
187 } vpb_bridge_t;
188
189 static vpb_bridge_t * bridges;
190 static int max_bridges = MAX_BRIDGES_V4PCI;
191
192 AST_MUTEX_DEFINE_STATIC(bridge_lock);
193
194 typedef enum {
195         vpb_model_unknown = 0, 
196         vpb_model_v4pci,
197         vpb_model_v12pci
198 } vpb_model_t;
199
200 static struct vpb_pvt {
201
202         ast_mutex_t owner_lock;                 /* Protect blocks that expect ownership to remain the same */
203         struct ast_channel *owner;              /* Channel who owns us, possibly NULL */
204
205         int golock;                             /* Got owner lock ? */
206
207         int mode;                               /* fxo/imediate/dialtone*/
208         int handle;                             /* Handle for vpb interface */
209
210         int state;                              /* used to keep port state (internal to driver) */
211
212         int group;                              /* Which group this port belongs to */
213
214         char dev[256];                          /* Device name, eg vpb/1-1 */
215         vpb_model_t vpb_model;                  /* card model */
216
217         struct ast_frame f, fr;                 /* Asterisk frame interface */
218         char buf[VPB_MAX_BUF];                  /* Static buffer for reading frames */
219
220         int dialtone;                           /* NOT USED */
221         float txgain, rxgain;                   /* Hardware gain control */
222         float txswgain, rxswgain;               /* Software gain control */
223
224         int wantdtmf;                           /* Waiting for DTMF. */
225         char context[AST_MAX_EXTENSION];        /* The context for this channel */
226
227         char ext[AST_MAX_EXTENSION];            /* DTMF buffer for the ext[ens] */
228         char language[MAX_LANGUAGE];            /* language being used */
229         char callerid[AST_MAX_EXTENSION];       /* CallerId used for directly connected phone */
230
231         int brcallerpos;                        /* Brazilian CallerID detection */
232
233         int lastoutput;                         /* Holds the last Audio format output'ed */
234         int lastinput;                          /* Holds the last Audio format input'ed */
235         int last_ignore_dtmf;
236
237         void *busy_timer;                       /* Void pointer for busy vpb_timer */
238         int busy_timer_id;                      /* unique timer ID for busy timer */
239
240         void *ringback_timer;                   /* Void pointer for ringback vpb_timer */
241         int ringback_timer_id;                  /* unique timer ID for ringback timer */
242
243         double lastgrunt;                       /* time stamp (secs since epoc) of last grunt event */
244
245         ast_mutex_t lock;                       /* This one just protects bridge ptr below */
246         vpb_bridge_t *bridge;
247
248         int stopreads;                          /* Stop reading...*/
249         int read_state;                         /* Read state */
250         int chuck_count;                        /* a count of packets weve chucked away!*/
251         pthread_t readthread;                   /* For monitoring read channel. One per owned channel. */
252
253         ast_mutex_t record_lock;                /* This one prevents reentering a record_buf block */
254         ast_mutex_t play_lock;                  /* This one prevents reentering a play_buf block */
255         int  play_buf_time;                     /* How long the last play_buf took */
256
257         ast_mutex_t play_dtmf_lock;
258         char play_dtmf[16];
259
260         struct vpb_pvt *next;                   /* Next channel in list */
261
262 } *iflist = NULL;
263
264 static struct ast_channel *vpb_new(struct vpb_pvt *i, int state, char *context);
265 static void *do_chanreads(void *pvt);
266
267 // Can't get vpb_bridge() working on v4pci without either a horrible
268 // high pitched feedback noise or bad hiss noise depending on gain settings
269 // Get asterisk to do the bridging
270 #define BAD_V4PCI_BRIDGE
271
272 // This one enables a half duplex bridge which may be required to prevent high pitched
273 // feedback when getting asterisk to do the bridging and when using certain gain settings.
274 //#define HALF_DUPLEX_BRIDGE
275
276 /* This is the Native bridge code, which Asterisk will try before using its own bridging code */
277 static int vpb_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc)
278 {
279         struct vpb_pvt *p0 = (struct vpb_pvt *)c0->pvt->pvt;
280         struct vpb_pvt *p1 = (struct vpb_pvt *)c1->pvt->pvt;
281         int i, res;
282
283         #ifdef BAD_V4PCI_BRIDGE
284         if(p0->vpb_model==vpb_model_v4pci)
285                 return -2;
286         #endif
287         if ( UseNativeBridge != 1){
288                 return -2;
289         }
290
291 /*
292         ast_mutex_lock(&p0->lock);
293         ast_mutex_lock(&p1->lock);
294 */
295
296         /* Bridge channels, check if we can.  I believe we always can, so find a slot.*/
297
298         ast_mutex_lock(&bridge_lock); {
299                 for (i = 0; i < max_bridges; i++) 
300                         if (!bridges[i].inuse)
301                                 break;
302                 if (i < max_bridges) {
303                         bridges[i].inuse = 1;
304                         bridges[i].endbridge = 0;
305                         bridges[i].flags = flags;
306                         bridges[i].rc = rc;
307                         bridges[i].fo = fo;
308                         bridges[i].c0 = c0;
309                         bridges[i].c1 = c1;
310                 }              
311         } ast_mutex_unlock(&bridge_lock); 
312
313         if (i == max_bridges) {
314                 ast_log(LOG_WARNING, "Failed to bridge %s and %s!\n", c0->name, c1->name);
315                 ast_mutex_unlock(&p0->lock);
316                 ast_mutex_unlock(&p1->lock);
317                 return -2;
318         } else {
319                 /* Set bridge pointers. You don't want to take these locks while holding bridge lock.*/
320                 ast_mutex_lock(&p0->lock); {
321                         p0->bridge = &bridges[i];
322                 } ast_mutex_unlock(&p0->lock);
323
324                 ast_mutex_lock(&p1->lock); {
325                         p1->bridge = &bridges[i];
326                 } ast_mutex_unlock(&p1->lock);
327
328                 if (option_verbose>1) 
329                         ast_verbose(VERBOSE_PREFIX_2 "Bridging call entered with [%s, %s]\n", c0->name, c1->name);
330         }
331
332         #ifdef HALF_DUPLEX_BRIDGE
333
334         if (option_verbose>1) 
335                 ast_verbose(VERBOSE_PREFIX_2 "Starting half-duplex bridge [%s, %s]\n", c0->name, c1->name);
336
337         int dir = 0;
338
339         memset(p0->buf, 0, sizeof p0->buf);
340         memset(p1->buf, 0, sizeof p1->buf);
341
342         vpb_record_buf_start(p0->handle, VPB_ALAW);
343         vpb_record_buf_start(p1->handle, VPB_ALAW);
344
345         vpb_play_buf_start(p0->handle, VPB_ALAW);
346         vpb_play_buf_start(p1->handle, VPB_ALAW);
347
348         while( !bridges[i].endbridge ) {
349                 struct vpb_pvt *from, *to;
350                 if(++dir%2) {
351                         from = p0;
352                         to = p1;
353                 } else {
354                         from = p1;
355                         to = p0;
356                 }
357                 vpb_record_buf_sync(from->handle, from->buf, VPB_SAMPLES);
358                 vpb_play_buf_sync(to->handle, from->buf, VPB_SAMPLES);
359         }
360
361         vpb_record_buf_finish(p0->handle);
362         vpb_record_buf_finish(p1->handle);
363
364         vpb_play_buf_finish(p0->handle);
365         vpb_play_buf_finish(p1->handle);
366
367         if (option_verbose>1) 
368                 ast_verbose(VERBOSE_PREFIX_2 "Finished half-duplex bridge [%s, %s]\n", c0->name, c1->name);
369
370         res = VPB_OK;
371
372         #else
373
374         res = vpb_bridge(p0->handle, p1->handle, VPB_BRIDGE_ON, i+1 /* resource 1 & 2 only for V4PCI*/ );
375         if (res == VPB_OK) {
376                 //pthread_cond_wait(&bridges[i].cond, &bridges[i].lock); /* Wait for condition signal. */
377                 while( !bridges[i].endbridge ) {};
378                 vpb_bridge(p0->handle, p1->handle, VPB_BRIDGE_OFF, i+1 /* resource 1 & 2 only for V4PCI*/ ); 
379         }
380
381         #endif
382
383         ast_mutex_lock(&bridge_lock); {
384                 bridges[i].inuse = 0;
385         } ast_mutex_unlock(&bridge_lock); 
386
387         p0->bridge = NULL;
388         p1->bridge = NULL;
389
390
391         if (option_verbose>1) 
392                 ast_verbose(VERBOSE_PREFIX_2 "Bridging call done with [%s, %s] => %d\n", c0->name, c1->name, res);
393
394 /*
395         ast_mutex_unlock(&p0->lock);
396         ast_mutex_unlock(&p1->lock);
397 */
398         return (res==VPB_OK)?0:-1;
399 }
400
401 static double get_time_in_ms()
402 {
403         struct timeval tv;
404         gettimeofday(&tv, NULL);
405         return ((double)tv.tv_sec*1000)+((double)tv.tv_usec/1000);
406 }
407
408 // Caller ID can be located in different positions between the rings depending on your Telco
409 // Australian (Telstra) callerid starts 700ms after 1st ring and finishes 1.5s after first ring
410 // Use ANALYSE_CID to record rings and determine location of callerid
411 //#define ANALYSE_CID
412 #define RING_SKIP 600
413 #define CID_MSECS 1700
414
415 static void get_callerid(struct vpb_pvt *p)
416 {
417         short buf[CID_MSECS*8]; // 8kHz sampling rate
418         double cid_record_time;
419         int rc;
420
421         if(strcasecmp(p->callerid, "on")) {
422                 p->owner->callerid = strdup("unknown");
423                 return;
424         }
425
426         if( ast_mutex_trylock(&p->record_lock) == 0 ) {
427
428                 char callerid[AST_MAX_EXTENSION] = ""; 
429
430                 cid_record_time = get_time_in_ms();
431                 if (option_verbose>3) 
432                         ast_verbose(VERBOSE_PREFIX_4 "CID record - start\n");
433
434                 #ifdef ANALYSE_CID
435                 VPB_RECORD record_parms = { "", 8 * 1000 }; // record a couple of rings
436                 vpb_record_set(p->handle,&record_parms);
437                 ast_verbose(VERBOSE_PREFIX_4 "Recording debug CID sample to /tmp/cid.raw\n");
438                 vpb_record_file_sync(p->handle,"/tmp/cid.raw",VPB_LINEAR);
439                 rc = 1; // don't try to decode_cid
440                 #else   
441                 // Skip any trailing ringtone
442                 vpb_sleep(RING_SKIP);
443
444                 if (option_verbose>3) 
445                         ast_verbose(VERBOSE_PREFIX_4 "CID record - skipped %fms trailing ring\n",
446                                  get_time_in_ms() - cid_record_time);
447                 cid_record_time = get_time_in_ms();
448
449                 // Record bit between the rings which contains the callerid
450                 vpb_record_buf_start(p->handle, VPB_LINEAR);
451                 rc = vpb_record_buf_sync(p->handle, (char*)buf, sizeof(buf));
452                 vpb_record_buf_finish(p->handle);
453                 #endif
454
455                 if (option_verbose>3) 
456                         ast_verbose(VERBOSE_PREFIX_4 "CID record - recorded %fms between rings\n", 
457                                 get_time_in_ms() - cid_record_time);
458
459                 ast_mutex_unlock(&p->record_lock);
460
461                 if( rc != VPB_OK ) {
462                         ast_log(LOG_ERROR, "Failed to record caller id sample on %s\n", p->dev );
463                         return;
464                 }
465
466                 // This decodes FSK 1200baud type callerid
467                 if ((rc=vpb_cid_decode(callerid, buf, CID_MSECS*8)) == VPB_OK ) {
468                         if(!*callerid) 
469                                 strncpy(callerid,"undisclosed", sizeof(callerid) - 1); // blocked CID (eg caller used 1831)
470                 } else {
471                         ast_log(LOG_ERROR, "Failed to decode caller id on %s - %s\n", p->dev, vpb_strerror(rc) );
472                         strncpy(callerid,"unknown", sizeof(callerid) - 1);
473                 }
474                 p->owner->callerid = strdup(callerid);
475
476         } else 
477                 ast_log(LOG_ERROR, "Failed to set record mode for caller id on %s\n", p->dev );
478 }
479
480 // Terminate any tones we are presently playing
481 static void stoptone( int handle)
482 {
483         int ret;
484         VPB_EVENT je;
485         while(vpb_playtone_state(handle)!=VPB_OK){
486                 vpb_tone_terminate(handle);
487                 ret = vpb_get_event_ch_async(handle,&je);
488                 if ((ret == VPB_OK)&&(je.type != VPB_DIALEND)){
489                         if (option_verbose > 3){
490                                         ast_verbose(VERBOSE_PREFIX_4 "Stop tone collected a wrong event!![%d]\n",je.type);
491                         }
492 //                      vpb_put_event(&je);
493                 }
494                 vpb_sleep(10);
495         }
496 }
497
498 /* Safe vpb_playtone_async */
499 static int playtone( int handle, VPB_TONE *tone)
500 {
501         int ret=VPB_OK;
502         stoptone(handle);
503         if (option_verbose > 3) 
504                 ast_verbose(VERBOSE_PREFIX_4 "[%02d]: Playing tone\n", handle);
505         ret = vpb_playtone_async(handle, tone);
506         return ret;
507 }
508
509 static inline int monitor_handle_owned(struct vpb_pvt *p, VPB_EVENT *e)
510 {
511         struct ast_frame f = {AST_FRAME_CONTROL}; /* default is control, Clear rest. */
512         int endbridge = 0;
513         int res=0;
514
515         if (option_verbose > 3) 
516                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_owned: got event: [%d=>%d]\n",
517                         p->dev, e->type, e->data);
518
519         f.src = type;
520         switch (e->type) {
521                 case VPB_RING:
522                         if (p->mode == MODE_FXO) {
523                                 f.subclass = AST_CONTROL_RING;
524                         } else
525                                 f.frametype = -1; /* ignore ring on station port. */
526                         break;
527
528                 case VPB_RING_OFF:
529                         f.frametype = -1;
530                         break;
531
532                 case VPB_TIMEREXP:
533                         if (e->data == p->busy_timer_id) {
534                                 playtone(p->handle,&Busytone);
535                                 p->state = VPB_STATE_PLAYBUSY;
536                                 vpb_timer_stop(p->busy_timer);
537                                 vpb_timer_start(p->busy_timer);
538                                 f.frametype = -1;
539                         } else if (e->data == p->ringback_timer_id) {
540                                 playtone(p->handle, &Ringbacktone);
541                                 vpb_timer_stop(p->ringback_timer);
542                                 vpb_timer_start(p->ringback_timer);
543                                 f.frametype = -1;
544                         } else {
545                                 f.frametype = -1; /* Ignore. */
546                         }
547                         break;
548
549                 case VPB_DTMF:
550                         if (p->owner->_state == AST_STATE_UP) {
551                                 f.frametype = AST_FRAME_DTMF;
552                                 f.subclass = e->data;
553                         } else
554                                 f.frametype = -1;
555                         break;
556
557                 case VPB_TONEDETECT:
558                         if (e->data == VPB_BUSY || e->data == VPB_BUSY_308 || e->data == VPB_BUSY_AUST ) {
559                                 if (option_verbose > 3) 
560                                         ast_verbose(VERBOSE_PREFIX_4 "%s: handle_owned: got event: BUSY\n",
561                                 if (p->owner->_state == AST_STATE_UP) {
562                                         f.subclass = AST_CONTROL_HANGUP;
563                                 }
564                                 else {
565                                         f.subclass = AST_CONTROL_BUSY;
566                                 }
567                         } else if (e->data == VPB_GRUNT) {
568                                 if( ( get_time_in_ms() - p->lastgrunt ) > gruntdetect_timeout ) {
569                                         // Nothing heard on line for a very long time
570                                         // Timeout connection
571                                         if (option_verbose > 2) 
572                                                 ast_verbose(VERBOSE_PREFIX_3 "grunt timeout\n");
573                                         ast_log(LOG_NOTICE,"%s: Line hangup due of lack of conversation\n",p->dev); 
574                                         f.subclass = AST_CONTROL_HANGUP;
575                                 } else {
576                                         p->lastgrunt = get_time_in_ms();
577                                         f.frametype = -1;
578                                 }
579                         } else
580                                 f.frametype = -1;
581                         break;
582
583                 case VPB_CALLEND:
584                         #ifdef DIAL_WITH_CALL_PROGRESS
585                         if (e->data == VPB_CALL_CONNECTED) 
586                                 f.subclass = AST_CONTROL_ANSWER;
587                         else if (e->data == VPB_CALL_NO_DIAL_TONE || e->data == VPB_CALL_NO_RING_BACK)
588                                 f.subclass =  AST_CONTROL_CONGESTION;
589                         else if (e->data == VPB_CALL_NO_ANSWER || e->data == VPB_CALL_BUSY)
590                                 f.subclass = AST_CONTROL_BUSY;
591                         else if (e->data  == VPB_CALL_DISCONNECTED) 
592                                 f.subclass = AST_CONTROL_HANGUP;
593                         #else
594                         ast_log(LOG_NOTICE,"%s: Got call progress callback but blind dialing \n", p->dev); 
595                         f.frametype = -1;
596                         #endif
597                         break;
598
599                 case VPB_STATION_OFFHOOK:
600                         f.subclass = AST_CONTROL_ANSWER;
601                         break;
602
603                 case VPB_DROP:
604                         if ((p->mode == MODE_FXO)&&(UseLoopDrop)){ /* ignore loop drop on stations */
605                                 if (p->owner->_state == AST_STATE_UP) 
606                                         f.subclass = AST_CONTROL_HANGUP;
607                                 else
608                                         f.frametype = -1;
609                         }
610                         break;
611                 case VPB_STATION_ONHOOK:
612                         f.subclass = AST_CONTROL_HANGUP;
613                         break;
614
615                 case VPB_STATION_FLASH:
616                         f.subclass = AST_CONTROL_FLASH;
617                         break;
618
619                 // Called when dialing has finished and ringing starts
620                 // No indication that call has really been answered when using blind dialing
621                 case VPB_DIALEND:
622                         if (p->state < 5){
623                                 f.subclass = AST_CONTROL_ANSWER;
624                                 if (option_verbose > 1) 
625                                         ast_verbose(VERBOSE_PREFIX_2 "%s: Dialend\n", p->dev);
626                         } else {
627                                 f.frametype = -1;
628                         }
629                         break;
630
631                 case VPB_PLAY_UNDERFLOW:
632                         f.frametype = -1;
633                         vpb_reset_play_fifo_alarm(p->handle);
634                         break;
635
636                 case VPB_RECORD_OVERFLOW:
637                         f.frametype = -1;
638                         vpb_reset_record_fifo_alarm(p->handle);
639                         break;
640
641                 default:
642                         f.frametype = -1;
643                         break;
644         }
645
646         if (option_verbose > 3) 
647                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_owned: putting frame type[%d]subclass[%d], bridge=%p\n",
648                         p->dev, f.frametype, f.subclass, (void *)p->bridge);
649
650 /*
651         if (option_verbose > 3) ast_verbose("%s: LOCKING in handle_owned [%d]\n", p->dev,res);
652         res = ast_mutex_lock(&p->lock); 
653         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
654 */
655         {
656                 if (p->bridge) { /* Check what happened, see if we need to report it. */
657                         switch (f.frametype) {
658                                 case AST_FRAME_DTMF:
659                                         if (    !(p->bridge->c0 == p->owner && 
660                                                         (p->bridge->flags & AST_BRIDGE_DTMF_CHANNEL_0) ) &&
661                                                 !(p->bridge->c1 == p->owner && 
662                                                         (p->bridge->flags & AST_BRIDGE_DTMF_CHANNEL_1) )) 
663                                                 /* Kill bridge, this is interesting. */
664                                                 endbridge = 1;
665                                         break;
666
667                                 case AST_FRAME_CONTROL:
668                                         if (!(p->bridge->flags & AST_BRIDGE_IGNORE_SIGS)) 
669                                         #if 0
670                                         if (f.subclass == AST_CONTROL_BUSY ||
671                                         f.subclass == AST_CONTROL_CONGESTION ||
672                                         f.subclass == AST_CONTROL_HANGUP ||
673                                         f.subclass == AST_CONTROL_FLASH)
674                                         #endif
675                                                 endbridge = 1;
676                                         break;
677
678                                 default:
679                                         break;
680                         }
681                         if (endbridge) {
682                                 if (p->bridge->fo)
683                                         *p->bridge->fo = ast_frisolate(&f);
684                                 if (p->bridge->rc)
685                                         *p->bridge->rc = p->owner;
686
687                                 ast_mutex_lock(&p->bridge->lock); {
688                                         p->bridge->endbridge = 1;
689                                         pthread_cond_signal(&p->bridge->cond);
690                                 } ast_mutex_unlock(&p->bridge->lock);                      
691                         }         
692                 }
693         } 
694
695         if (endbridge){
696                 res = ast_mutex_unlock(&p->lock);
697 /*
698                 if (option_verbose > 3) ast_verbose("%s: unLOCKING in handle_owned [%d]\n", p->dev,res);
699 */
700                 return 0;
701         }
702
703         // Trylock used here to avoid deadlock that can occur if we
704         // happen to be in here handling an event when hangup is called
705         // Problem is that hangup holds p->owner->lock
706         if ((f.frametype >= 0)&& (f.frametype != AST_FRAME_NULL)&&(p->owner)) {
707                 if (ast_mutex_trylock(&p->owner->lock)==0)  {
708                         ast_queue_frame(p->owner, &f);
709                         ast_mutex_unlock(&p->owner->lock);
710                 } else {
711                         ast_verbose("%s: handled_owned: Missed event %d/%d \n",
712                                 p->dev,f.frametype, f.subclass);
713                 }
714         }
715         res = ast_mutex_unlock(&p->lock);
716 /*
717         if (option_verbose > 3) ast_verbose("%s: unLOCKING in handle_owned [%d]\n", p->dev,res);
718 */
719
720         return 0;
721 }
722
723 static inline int monitor_handle_notowned(struct vpb_pvt *p, VPB_EVENT *e)
724 {
725         char s[2] = {0};
726
727         if (option_verbose > 3) {
728                 char str[VPB_MAX_STR];
729                 vpb_translate_event(e, str);
730                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: mode=%d, event[%d][%s]=[%d]\n",
731                         p->dev, p->mode, e->type,str, e->data);
732         }
733
734         switch(e->type) {
735                 case VPB_RING:
736                         if (p->mode == MODE_FXO) /* FXO port ring, start * */ {
737                                 vpb_new(p, AST_STATE_RING, p->context);
738                                 get_callerid(p);        /* Australian Caller ID only between 1st and 2nd ring */
739                         }
740                         break;
741
742                 case VPB_RING_OFF:
743                         break;
744
745                 case VPB_STATION_OFFHOOK:
746                         if (p->mode == MODE_IMMEDIATE) 
747                                 vpb_new(p,AST_STATE_RING, p->context);
748                         else {
749                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: playing dialtone\n",p->dev);
750                                 playtone(p->handle, &Dialtone);
751                                 p->wantdtmf = 1;
752                                 p->ext[0] = 0;  /* Just to be sure & paranoid.*/
753                                 p->state=VPB_STATE_PLAYDIAL;
754                         }
755                         break;
756
757                 case VPB_DIALEND:
758                         if (p->mode == MODE_DIALTONE){
759                                 if (p->state == VPB_STATE_PLAYDIAL) {
760                                         playtone(p->handle, &Dialtone);
761                                         p->wantdtmf = 1;
762                                         p->ext[0] = 0;  // Just to be sure & paranoid.
763                                 }
764                                 /* These are not needed as they have timers to restart them
765                                 else if (p->state == VPB_STATE_PLAYBUSY) {
766                                         playtone(p->handle, &Busytone);
767                                         p->wantdtmf = 1;
768                                         p->ext[0] = 0;  // Just to be sure & paranoid.
769                                 }
770                                 else if (p->state == VPB_STATE_PLAYRING) {
771                                         playtone(p->handle, &Ringbacktone);
772                                         p->wantdtmf = 1;
773                                         p->ext[0] = 0;  // Just to be sure & paranoid.
774                                 }
775                                 */
776                         } else {
777                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: Got a DIALEND when not really expected\n",p->dev);
778                         }
779                         break;
780
781                 case VPB_STATION_ONHOOK:        /* clear ext */
782                         stoptone(p->handle);
783                         p->wantdtmf = 1 ;
784                         p->ext[0] = 0;
785                         p->state=VPB_STATE_ONHOOK;
786                         break;
787
788                 case VPB_DTMF:
789                         if (p->state == VPB_STATE_ONHOOK){
790                                 /* DTMF's being passed while on-hook maybe Caller ID */
791                                 break;
792                         }
793                         if (p->wantdtmf == 1) {
794                                 stoptone(p->handle);
795                                 p->wantdtmf = 0;
796                         }
797                         p->state=VPB_STATE_GETDTMF;
798                         s[0] = e->data;
799                         strncat(p->ext, s, sizeof(p->ext) - strlen(p->ext) - 1);
800                         if (ast_exists_extension(NULL, p->context, p->ext, 1, p->callerid)){
801                                 vpb_new(p,AST_STATE_RING, p->context);
802                         } else if (!ast_canmatch_extension(NULL, p->context, p->ext, 1, p->callerid)){
803                                 if (ast_exists_extension(NULL, "default", p->ext, 1, p->callerid)) {
804                                         vpb_new(p,AST_STATE_RING, "default");         
805                                 } else if (!ast_canmatch_extension(NULL, "default", p->ext, 1, p->callerid)) {
806                                         if (option_verbose > 3) {
807                                                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: can't match anything in %s or default\n",
808                                                          p->dev, p->context);
809                                         }
810                                         playtone(p->handle, &Busytone);
811                                         vpb_timer_stop(p->busy_timer);
812                                         vpb_timer_start(p->busy_timer);
813                                         p->state = VPB_STATE_PLAYBUSY;
814                                 }
815                         }
816                         break;
817
818                 default:
819                         /* Ignore.*/
820                         break;
821         }
822
823         if (option_verbose > 3) 
824                 ast_verbose(VERBOSE_PREFIX_4 "%s: handle_notowned: mode=%d, [%d=>%d]\n",
825                         p->dev, p->mode, e->type, e->data);
826
827         return 0;
828 }
829
830 static void *do_monitor(void *unused)
831 {
832
833         /* Monitor thread, doesn't die until explicitly killed. */
834
835         if (option_verbose > 1) 
836                 ast_verbose(VERBOSE_PREFIX_2 "Starting vpb monitor thread[%ld]\n",
837         pthread_self());
838
839         pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
840
841         for(;;) {
842                 VPB_EVENT e;
843                 VPB_EVENT je;
844                 char str[VPB_MAX_STR];
845                 struct vpb_pvt *p;
846
847                 /*
848                 if (option_verbose > 3)
849                      ast_verbose(VERBOSE_PREFIX_4 "Monitor waiting for event\n");
850                 */
851
852                 int res = vpb_get_event_sync(&e, VPB_WAIT_TIMEOUT);
853                 if( (res==VPB_NO_EVENTS) || (res==VPB_TIME_OUT) ){
854                         /*
855                         if (option_verbose > 3){
856                                 if (res ==  VPB_NO_EVENTS){
857                                         ast_verbose(VERBOSE_PREFIX_4 "No events....\n");
858                                 } else {
859                                         ast_verbose(VERBOSE_PREFIX_4 "No events, timed out....\n");
860                                 }
861                         }
862                         */
863                         continue;
864                 }
865
866                 if (res != VPB_OK) {
867                         ast_log(LOG_ERROR,"Monitor get event error %s\n", vpb_strerror(res) );
868                         ast_verbose("Monitor get event error %s\n", vpb_strerror(res) );
869                         continue;
870                 }
871
872                 str[0] = 0;
873
874                 p = NULL;
875
876                 ast_mutex_lock(&monlock); {
877                         vpb_translate_event(&e, str);
878
879                         if (e.type == VPB_NULL_EVENT) {
880                                 if (option_verbose > 3)
881                                         ast_verbose(VERBOSE_PREFIX_4 "Monitor got null event\n");
882                                 goto done; /* Nothing to do, just a wakeup call.*/
883                         }
884                         if (strlen(str)>1){
885                                 str[(strlen(str)-1)]='\0';
886                         }
887
888                         ast_mutex_lock(&iflock); {
889                                 p = iflist;
890                                 while (p && p->handle != e.handle)
891                                         p = p->next;
892                         } ast_mutex_unlock(&iflock);
893
894                         if (p && (option_verbose > 3))
895                                 ast_verbose(VERBOSE_PREFIX_4 "%s: Event [%d=>%s] \n", 
896                                         p ? p->dev : "null", e.type, str );
897                         done: (void)0;
898
899                 } ast_mutex_unlock(&monlock); 
900
901                 if (!p) {
902                         if (e.type != VPB_NULL_EVENT){
903                                 ast_log(LOG_WARNING, "Got event [%s][%d], no matching iface!\n", str,e.type);    
904                                 if (option_verbose > 3){
905                                         ast_verbose(VERBOSE_PREFIX_4 "vpb/ERR: No interface for Event [%d=>%s] \n",e.type,str );
906                                 }
907                         }
908                         continue;
909                 } 
910
911                 /* flush the event from the channel event Q */
912                 vpb_get_event_ch_async(e.handle,&je);
913                 if (option_verbose > 4){
914                         vpb_translate_event(&je, str);
915                         ast_verbose("%s: Flushing event [%d]=>%s\n",p->dev,je.type,str);
916                 }
917
918                 /* Check for ownership and locks */
919                 if ((p->owner)&&(!p->golock)){
920                         /* Need to get owner lock */
921                         /* Safely grab both p->lock and p->owner->lock so that there
922                         cannot be a race with something from the other side */
923                         /*
924                         ast_mutex_lock(&p->lock);
925                         while(ast_mutex_trylock(&p->owner->lock)) {
926                                 ast_mutex_unlock(&p->lock);
927                                 usleep(1);
928                                 ast_mutex_lock(&p->lock);
929                                 if (!p->owner)
930                                         break;
931                         }
932                         if (p->owner)
933                                 p->golock=1;
934                         */
935                 }
936                 /* Two scenarios: Are you owned or not. */
937                 if (p->owner) {
938                         monitor_handle_owned(p, &e);
939                 } else {
940                         monitor_handle_notowned(p, &e);
941                 }
942                 /* if ((!p->owner)&&(p->golock)){
943                         ast_mutex_unlock(&p->owner->lock);
944                         ast_mutex_unlock(&p->lock);
945                 }
946                 */
947
948         }
949
950         return NULL;
951 }
952
953 static int restart_monitor(void)
954 {
955         int error = 0;
956
957         /* If we're supposed to be stopped -- stay stopped */
958         if (mthreadactive == -2)
959                 return 0;
960
961         if (option_verbose > 3)
962                 ast_verbose(VERBOSE_PREFIX_4 "Restarting monitor\n");
963
964         ast_mutex_lock(&monlock); {
965                 if (monitor_thread == pthread_self()) {
966                         ast_log(LOG_WARNING, "Cannot kill myself\n");
967                         error = -1;
968                         if (option_verbose > 3)
969                                 ast_verbose(VERBOSE_PREFIX_4 "Monitor trying to kill monitor\n");
970                         goto done;
971                 }
972                 if (mthreadactive != -1) {
973                         /* Why do other drivers kill the thread? No need says I, simply awake thread with event. */
974                         VPB_EVENT e;
975                         e.handle = 0;
976                         e.type = VPB_NULL_EVENT;
977                         e.data = 0;
978
979                         if (option_verbose > 3)
980                                 ast_verbose(VERBOSE_PREFIX_4 "Trying to reawake monitor\n");
981
982                         vpb_put_event(&e);
983                 } else {
984                         /* Start a new monitor */
985                         int pid = ast_pthread_create(&monitor_thread, NULL, do_monitor, NULL); 
986                         if (option_verbose > 3)
987                                 ast_verbose(VERBOSE_PREFIX_4 "Created new monitor thread %d\n",pid);
988                         if (pid < 0) {
989                                 ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
990                                 error = -1;
991                                 goto done;
992                         } else
993                                 mthreadactive = 0; /* Started the thread!*/
994                 }
995                 done: (void)0;
996         } ast_mutex_unlock(&monlock);
997
998         if (option_verbose > 3)
999                 ast_verbose(VERBOSE_PREFIX_4 "Monitor restarted\n");
1000
1001         return error;
1002 }
1003
1004 // Per board config that must be called after vpb_open()
1005 static void mkbrd(vpb_model_t model, int echo_cancel)
1006 {
1007         if(!bridges) {
1008                 if(model==vpb_model_v4pci) 
1009                         max_bridges = MAX_BRIDGES_V4PCI;
1010                 bridges = (vpb_bridge_t *)malloc(max_bridges * sizeof(vpb_bridge_t) );
1011                 if(!bridges) 
1012                         ast_log(LOG_ERROR, "Failed to initialize bridges\n");
1013                 else {
1014                         memset(bridges,0,max_bridges * sizeof(vpb_bridge_t));
1015                         for(int i = 0; i < max_bridges; i++ ) {
1016                                 ast_mutex_init(&bridges[i].lock);
1017                                 pthread_cond_init(&bridges[i].cond, NULL);
1018                         }
1019                 }
1020         }
1021         if(!echo_cancel) {
1022                 if (model==vpb_model_v4pci) {
1023                         vpb_echo_canc_disable();
1024                         ast_log(LOG_NOTICE, "Voicetronix echo cancellation OFF\n");
1025                 } 
1026                 else {
1027                 /* need to it port by port for OpenSwitch*/
1028                 }
1029         } else {
1030                 if (model==vpb_model_v4pci) {
1031                         vpb_echo_canc_enable();
1032                         ast_log(LOG_NOTICE, "Voicetronix echo cancellation ON\n");
1033                 }
1034                 else {
1035                 /* need to it port by port for OpenSwitch*/
1036                 }
1037         }
1038 }
1039
1040 struct vpb_pvt *mkif(int board, int channel, int mode, float txgain, float rxgain,
1041                          float txswgain, float rxswgain, int bal1, int bal2, int bal3,
1042                          char * callerid, int echo_cancel, int group )
1043 {
1044         struct vpb_pvt *tmp;
1045         char buf[64];
1046
1047         tmp = (struct vpb_pvt *)calloc(1, sizeof *tmp);
1048
1049         if (!tmp)
1050                 return NULL;
1051
1052         tmp->handle = vpb_open(board, channel);
1053
1054         if (tmp->handle < 0) {    
1055                 ast_log(LOG_WARNING, "Unable to create channel vpb/%d-%d: %s\n", 
1056                                         board, channel, strerror(errno));
1057                 free(tmp);
1058                 return NULL;
1059         }
1060                
1061         snprintf(tmp->dev, sizeof(tmp->dev), "vpb/%d-%d", board, channel);
1062
1063         tmp->mode = mode;
1064
1065         tmp->group = group;
1066
1067
1068         strncpy(tmp->language, language, sizeof(tmp->language) - 1);
1069         strncpy(tmp->context, context, sizeof(tmp->context) - 1);
1070
1071         if(callerid) { 
1072                 strncpy(tmp->callerid, callerid, sizeof(tmp->callerid) - 1);
1073                 free(callerid);
1074         } else {
1075                 strncpy(tmp->callerid, "unknown", sizeof(tmp->callerid) - 1);
1076         }
1077
1078         /* check if codec balances have been set in the config file */
1079         if (bal3>=0) {
1080                 if ((bal1>=0) && !(bal1 & 32)) bal1 |= 32;
1081                         vpb_set_codec_reg(tmp->handle, 0x42, bal3);
1082         }
1083         if(bal1>=0) vpb_set_codec_reg(tmp->handle, 0x32, bal1);
1084         if(bal2>=0) vpb_set_codec_reg(tmp->handle, 0x3a, bal2);
1085
1086         tmp->txgain = txgain;
1087         vpb_play_set_hw_gain(tmp->handle, (txgain > MAX_VPB_GAIN) ? MAX_VPB_GAIN : txgain);
1088
1089         tmp->rxgain = rxgain;
1090         vpb_record_set_hw_gain(tmp->handle, (rxgain > MAX_VPB_GAIN) ? MAX_VPB_GAIN : rxgain);
1091
1092         tmp->txswgain = txswgain;
1093         vpb_play_set_gain(tmp->handle, (txswgain > MAX_VPB_GAIN) ? MAX_VPB_GAIN : txswgain);
1094
1095         tmp->rxswgain = rxswgain;
1096         vpb_record_set_gain(tmp->handle, (rxswgain > MAX_VPB_GAIN) ? MAX_VPB_GAIN : rxswgain);
1097
1098         tmp->vpb_model = vpb_model_unknown;
1099         if( vpb_get_model(buf) == VPB_OK ) {
1100                 if(strcmp(buf,"V12PCI")==0) 
1101                         tmp->vpb_model = vpb_model_v12pci;
1102                 else if(strcmp(buf,"VPB4")==0) 
1103                         tmp->vpb_model = vpb_model_v4pci;
1104         }
1105
1106         ast_mutex_init(&tmp->owner_lock);
1107         ast_mutex_init(&tmp->lock);
1108         ast_mutex_init(&tmp->record_lock);
1109         ast_mutex_init(&tmp->play_lock);
1110         ast_mutex_init(&tmp->play_dtmf_lock);
1111
1112         /* set default read state */
1113         tmp->read_state = 0;
1114         
1115         tmp->golock=0;
1116
1117         tmp->busy_timer_id = vpb_timer_get_unique_timer_id();
1118         vpb_timer_open(&tmp->busy_timer, tmp->handle, tmp->busy_timer_id, TIMER_PERIOD_BUSY);
1119
1120         tmp->ringback_timer_id = vpb_timer_get_unique_timer_id();
1121         vpb_timer_open(&tmp->ringback_timer, tmp->handle, tmp->ringback_timer_id, TIMER_PERIOD_RINGBACK);
1122               
1123         if (mode == MODE_FXO){
1124                 vpb_set_event_mask(tmp->handle, VPB_EVENTS_ALL );
1125         }
1126         else {
1127                 vpb_set_event_mask(tmp->handle, VPB_EVENTS_STAT );
1128         }
1129
1130         if ((tmp->vpb_model == vpb_model_v12pci) && (echo_cancel)){
1131                 vpb_hostecho_on(tmp->handle);
1132         }
1133
1134         /* define grunt tone */
1135         vpb_settonedet(tmp->handle,&toned_ungrunt);
1136
1137         ast_log(LOG_NOTICE,"Voicetronix %s channel %s initialized (rxgain=%f txgain=%f) (%f/%f/0x%X/0x%X/0x%X)\n",
1138                 (tmp->vpb_model==vpb_model_v4pci)?"V4PCI":
1139                 (tmp->vpb_model==vpb_model_v12pci)?"V12PCI":"[Unknown model]",
1140                 tmp->dev, tmp->rxswgain, tmp->txswgain, tmp->rxgain, tmp->txgain, bal1, bal2, bal3 );
1141
1142         return tmp;
1143 }
1144
1145 static int vpb_indicate(struct ast_channel *ast, int condition)
1146 {
1147         struct vpb_pvt *p = (struct vpb_pvt *)ast->pvt->pvt;
1148         int res = 0;
1149         int tmp = 0;
1150
1151         if (option_verbose > 3)
1152                 ast_verbose(VERBOSE_PREFIX_4 "%s: vpb_indicate [%d] state[%d]\n", p->dev, condition,ast->_state);
1153 /*
1154         if (ast->_state != AST_STATE_UP) {
1155                 ast_verbose(VERBOSE_PREFIX_4 "%s: vpb_indicate Not in AST_STATE_UP\n", p->dev, condition,ast->_state);
1156                 return res;
1157         }
1158 */
1159
1160 /*
1161         if (option_verbose > 3) ast_verbose("%s: LOCKING in indicate \n", p->dev);
1162         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1163 */
1164         ast_mutex_lock(&p->lock);
1165         switch(condition) {
1166                 case AST_CONTROL_BUSY:
1167                 case AST_CONTROL_CONGESTION:
1168                         if (ast->_state == AST_STATE_UP) {
1169                                 playtone(p->handle, &Busytone);
1170                                 p->state = VPB_STATE_PLAYBUSY;
1171                                 vpb_timer_stop(p->busy_timer); 
1172                                 vpb_timer_start(p->busy_timer); 
1173                         }
1174                         break;
1175                 case AST_CONTROL_RINGING:
1176                         if (ast->_state == AST_STATE_UP) {
1177                                 playtone(p->handle, &Ringbacktone);
1178                                 p->state = VPB_STATE_PLAYRING;
1179                                 if (option_verbose > 3)
1180                                         ast_verbose(VERBOSE_PREFIX_4 "%s: vpb indicate: setting ringback timer [%d]\n", p->dev,p->ringback_timer_id);
1181                                 
1182                                 vpb_timer_stop(p->ringback_timer);
1183                                 vpb_timer_start(p->ringback_timer);
1184                         }
1185                         break;      
1186                 case AST_CONTROL_ANSWER:
1187                 case -1: /* -1 means stop playing? */
1188                         vpb_timer_stop(p->ringback_timer);
1189                         vpb_timer_stop(p->busy_timer);
1190                         stoptone(p->handle);
1191                         break;
1192                 case AST_CONTROL_HANGUP:
1193                         if (ast->_state == AST_STATE_UP) {
1194                                 playtone(p->handle, &Busytone);
1195                                 p->state = VPB_STATE_PLAYBUSY;
1196                                 vpb_timer_stop(p->busy_timer);
1197                                 vpb_timer_start(p->busy_timer);
1198                         }
1199                         break;
1200
1201                 default:
1202                         res = 0;
1203                         break;
1204         }
1205         tmp = ast_mutex_unlock(&p->lock);
1206 /*
1207         if (option_verbose > 3) ast_verbose("%s: unLOCKING in indicate [%d]\n", p->dev,tmp);
1208 */
1209         return res;
1210 }
1211
1212 static int vpb_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
1213 {
1214         struct vpb_pvt *p = (struct vpb_pvt *)newchan->pvt->pvt;
1215         int res = 0;
1216
1217 /*
1218         if (option_verbose > 3) ast_verbose("%s: LOCKING in fixup \n", p->dev);
1219         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1220 */
1221         ast_mutex_lock(&p->lock);
1222         ast_log(LOG_DEBUG, "New owner for channel %s is %s\n", p->dev, newchan->name);
1223
1224         if (p->owner == oldchan) {
1225                 p->owner = newchan;
1226         }
1227
1228         if (newchan->_state == AST_STATE_RINGING) 
1229                 vpb_indicate(newchan, AST_CONTROL_RINGING);
1230
1231         res= ast_mutex_unlock(&p->lock);
1232 /*
1233         if (option_verbose > 3) ast_verbose("%s: unLOCKING in fixup [%d]\n", p->dev,res);
1234 */
1235         return 0;
1236 }
1237
1238 static int vpb_digit(struct ast_channel *ast, char digit)
1239 {
1240         struct vpb_pvt *p = (struct vpb_pvt *)ast->pvt->pvt;
1241         char s[2];
1242         int res = 0;
1243
1244 /*
1245         if (option_verbose > 3) ast_verbose("%s: LOCKING in digit \n", p->dev);
1246         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1247 */
1248         ast_mutex_lock(&p->lock);
1249
1250
1251         s[0] = digit;
1252         s[1] = '\0';
1253
1254         if (option_verbose > 3)
1255                 ast_verbose(VERBOSE_PREFIX_4 "%s: play digit[%s]\n", p->dev, s);
1256
1257         ast_mutex_lock(&p->play_dtmf_lock);
1258         strncat(p->play_dtmf,s,sizeof(*p->play_dtmf));
1259         ast_mutex_unlock(&p->play_dtmf_lock);
1260
1261         res = ast_mutex_unlock(&p->lock);
1262 /*
1263         if (option_verbose > 3) ast_verbose("%s: unLOCKING in digit [%d]\n", p->dev,res);
1264 */
1265         return 0;
1266 }
1267
1268 /* Places a call out of a VPB channel */
1269 static int vpb_call(struct ast_channel *ast, char *dest, int timeout)
1270 {
1271         struct vpb_pvt *p = (struct vpb_pvt *)ast->pvt->pvt;
1272         int res = 0,i;
1273         char *s = strrchr(dest, '/');
1274         char dialstring[254] = "";
1275         int tmp = 0;
1276
1277 /*
1278         if (option_verbose > 3) ast_verbose("%s: LOCKING in call \n", p->dev);
1279         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1280 */
1281         ast_mutex_lock(&p->lock);
1282
1283         if (s)
1284                 s = s + 1;
1285         else
1286                 s = dest;
1287         strncpy(dialstring, s, sizeof(dialstring) - 1);
1288         for (i=0; dialstring[i] != '\0' ; i++) {
1289                 if ((dialstring[i] == 'w') || (dialstring[i] == 'W'))
1290                         dialstring[i] = ',';
1291                 else if ((dialstring[i] == 'f') || (dialstring[i] == 'F'))
1292                         dialstring[i] = '&';
1293         }       
1294         if (option_verbose > 3)
1295                 ast_verbose(VERBOSE_PREFIX_4 "%s: starting call\n", p->dev);
1296
1297         if (ast->_state != AST_STATE_DOWN && ast->_state != AST_STATE_RESERVED) {
1298                 ast_log(LOG_WARNING, "vpb_call on %s neither down nor reserved!\n", ast->name);
1299                 tmp = ast_mutex_unlock(&p->lock);
1300 /*
1301                 if (option_verbose > 3) ast_verbose("%s: unLOCKING in call [%d]\n", p->dev,tmp);
1302 */
1303                 return -1;
1304         }
1305         if (p->mode != MODE_FXO)  /* Station port, ring it. */
1306                 res = vpb_ring_station_async(p->handle, VPB_RING_STATION_ON,0);       
1307         else {
1308                 VPB_CALL call;
1309
1310                 // Dial must timeout or it can leave channels unuseable
1311                 if( timeout == 0 )
1312                         timeout = TIMER_PERIOD_NOANSWER;
1313                 else 
1314                         timeout = timeout * 1000; //convert from secs to ms.
1315
1316                 // These timeouts are only used with call progress dialing
1317                 call.dialtones = 1; // Number of dialtones to get outside line
1318                 call.dialtone_timeout = VPB_DIALTONE_WAIT; // Wait this long for dialtone (ms)
1319                 call.ringback_timeout = VPB_RINGWAIT; // Wait this long for ringing after dialing (ms)
1320                 call.inter_ringback_timeout = VPB_CONNECTED_WAIT; // If ringing stops for this long consider it connected (ms)
1321                 call.answer_timeout = timeout; // Time to wait for answer after ringing starts (ms)
1322                 memcpy( &call.tone_map,  DialToneMap, sizeof(DialToneMap) );
1323                 vpb_set_call(p->handle, &call);
1324
1325                 if (option_verbose > 1)
1326                         ast_verbose(VERBOSE_PREFIX_2 "%s: Calling %s on %s \n",p->dev, dialstring, ast->name); 
1327
1328                 if (option_verbose > 2) {
1329                         int j;
1330                         ast_verbose(VERBOSE_PREFIX_2 "%s: Dial parms for %s %d/%dms/%dms/%dms/%dms\n", p->dev
1331                                 , ast->name, call.dialtones, call.dialtone_timeout
1332                                 , call.ringback_timeout, call.inter_ringback_timeout
1333                                 , call.answer_timeout );
1334                         for( j=0; !call.tone_map[j].terminate; j++ )
1335                                 ast_verbose(VERBOSE_PREFIX_2 "%s: Dial parms for %s tone %d->%d\n", p->dev,
1336                                         ast->name, call.tone_map[j].tone_id, call.tone_map[j].call_id); 
1337                 }
1338
1339                 if (option_verbose > 4)
1340                                 ast_verbose("%s: Disabling Loop Drop detection\n",p->dev);
1341                 vpb_disable_event(p->handle, VPB_MDROP);
1342                 vpb_sethook_sync(p->handle,VPB_OFFHOOK);
1343                 p->state=VPB_STATE_OFFHOOK;
1344
1345                 #ifndef DIAL_WITH_CALL_PROGRESS
1346                 vpb_sleep(300);
1347                 if (option_verbose > 4)
1348                                 ast_verbose("%s: Disabling Loop Drop detection\n",p->dev);
1349                 vpb_enable_event(p->handle, VPB_MDROP);
1350                 res = vpb_dial_async(p->handle, dialstring);
1351                 #else
1352                 if (option_verbose > 4)
1353                                 ast_verbose("%s: Disabling Loop Drop detection\n",p->dev);
1354                 vpb_enable_event(p->handle, VPB_MDROP);
1355                 res = vpb_call_async(p->handle, dialstring);
1356                 #endif
1357
1358                 if (res != VPB_OK) {
1359                         ast_log(LOG_DEBUG, "Call on %s to %s failed: %s\n", ast->name, s, vpb_strerror(res));         
1360                         res = -1;
1361                 } else 
1362                         res = 0;
1363         }
1364
1365         if (option_verbose > 2)
1366                 ast_verbose(VERBOSE_PREFIX_3 "%s: VPB Calling %s [t=%d] on %s returned %d\n",p->dev , s, timeout, ast->name, res); 
1367         if (res == 0) {
1368                 ast_setstate(ast, AST_STATE_RINGING);
1369                 ast_queue_control(ast,AST_CONTROL_RINGING);             
1370         }
1371
1372         if (!p->readthread){
1373                 ast_pthread_create(&p->readthread, NULL, do_chanreads, (void *)p);
1374         }
1375
1376         tmp = ast_mutex_unlock(&p->lock);
1377 /*
1378         if (option_verbose > 3) ast_verbose("%s: unLOCKING in call [%d]\n", p->dev,tmp);
1379 */
1380         return res;
1381 }
1382
1383 static int vpb_hangup(struct ast_channel *ast)
1384 {
1385         struct vpb_pvt *p = (struct vpb_pvt *)ast->pvt->pvt;
1386         VPB_EVENT je;
1387         char str[VPB_MAX_STR];
1388         int res =0 ;
1389
1390 /*
1391         if (option_verbose > 3) ast_verbose("%s: LOCKING in hangup \n", p->dev);
1392         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);
1393         if (option_verbose > 3) ast_verbose("%s: LOCKING pthread_self(%d)\n", p->dev,pthread_self());
1394         ast_mutex_lock(&p->lock);
1395 */
1396         if (option_verbose > 1) 
1397                 ast_verbose(VERBOSE_PREFIX_2 "%s: Hangup requested\n", ast->name);
1398
1399         if (!ast->pvt || !ast->pvt->pvt) {
1400                 ast_log(LOG_WARNING, "%s: channel not connected?\n", ast->name);
1401                 res = ast_mutex_unlock(&p->lock);
1402 /*
1403                 if (option_verbose > 3) ast_verbose("%s: unLOCKING in hangup [%d]\n", p->dev,res);
1404 */
1405                 return 0;
1406         }
1407
1408
1409
1410         /* Stop record */
1411         p->stopreads = 1;
1412         if( p->readthread ){
1413                 pthread_join(p->readthread, NULL); 
1414                 if(option_verbose>3) 
1415                         ast_verbose( VERBOSE_PREFIX_4 "%s: stopped record thread on %s\n",ast->name,p->dev);
1416         }
1417
1418         /* Stop play */
1419         if (p->lastoutput != -1) {
1420                 if(option_verbose>1) 
1421                         ast_verbose( VERBOSE_PREFIX_2 "%s: Ending play mode on %s\n",ast->name,p->dev);
1422                 vpb_play_terminate(p->handle);
1423                 ast_mutex_lock(&p->play_lock); {
1424                         vpb_play_buf_finish(p->handle);
1425                 } ast_mutex_unlock(&p->play_lock);
1426         }
1427
1428         if(option_verbose>3) 
1429                 ast_verbose( VERBOSE_PREFIX_4 "%s: Setting state down\n",ast->name);
1430         ast_setstate(ast,AST_STATE_DOWN);
1431
1432
1433 /*
1434         if (option_verbose > 3) ast_verbose("%s: LOCKING in hangup \n", p->dev);
1435         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);
1436         if (option_verbose > 3) ast_verbose("%s: LOCKING pthread_self(%d)\n", p->dev,pthread_self());
1437 */
1438         ast_mutex_lock(&p->lock);
1439
1440         if (p->mode != MODE_FXO) { 
1441                 /* station port. */
1442                 vpb_ring_station_async(p->handle, VPB_RING_STATION_OFF,0);      
1443                 if(p->state!=VPB_STATE_ONHOOK){
1444                         /* This is causing a "dial end" "play tone" loop
1445                         playtone(p->handle, &Busytone); 
1446                         p->state = VPB_STATE_PLAYBUSY;
1447                         if(option_verbose>4) 
1448                                 ast_verbose( VERBOSE_PREFIX_4 "%s: Station offhook[%d], playing busy tone\n",
1449                                                                 ast->name,p->state);
1450                         */
1451                 }
1452                 else {
1453                         stoptone(p->handle);
1454                 }
1455         } else {
1456                 stoptone(p->handle); // Terminates any dialing
1457                 vpb_sethook_sync(p->handle, VPB_ONHOOK);
1458                 p->state=VPB_STATE_ONHOOK;
1459         }
1460         while (VPB_OK==vpb_get_event_ch_async(p->handle,&je)){
1461                 if(option_verbose>3) {
1462                         vpb_translate_event(&je, str);
1463                         ast_verbose( VERBOSE_PREFIX_4 "%s: Flushing event [%d]=>%s\n",ast->name,je.type,str);
1464                 }
1465         }
1466
1467         p->readthread = 0;
1468         p->lastoutput = -1;
1469         p->lastinput = -1;
1470         p->last_ignore_dtmf = 1;
1471         p->ext[0]  = 0;
1472         p->dialtone = 0;
1473
1474         p->owner = NULL;
1475         ast->pvt->pvt=NULL;
1476
1477         ast_mutex_lock(&usecnt_lock); {
1478                 usecnt--;
1479         } ast_mutex_unlock(&usecnt_lock);
1480         ast_update_use_count();
1481
1482         if (option_verbose > 1)
1483                 ast_verbose(VERBOSE_PREFIX_2 "%s: Hangup complete\n", ast->name);
1484
1485         restart_monitor();
1486 /*
1487         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);
1488 */
1489         res = ast_mutex_unlock(&p->lock);
1490 /*
1491         if (option_verbose > 3) ast_verbose("%s: unLOCKING in hangup [%d]\n", p->dev,res);
1492         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);
1493 */
1494         return 0;
1495 }
1496
1497 static int vpb_answer(struct ast_channel *ast)
1498 {
1499         struct vpb_pvt *p = (struct vpb_pvt *)ast->pvt->pvt;
1500         VPB_EVENT je;
1501         int ret;
1502         int res = 0;
1503 /*
1504         if (option_verbose > 3) ast_verbose("%s: LOCKING in answer \n", p->dev);
1505         if (option_verbose > 3) ast_verbose("%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1506 */
1507         ast_mutex_lock(&p->lock);
1508
1509         if (option_verbose > 3)
1510                         ast_verbose(VERBOSE_PREFIX_4 "%s: Answering channel\n",p->dev);
1511
1512         if (p->mode == MODE_FXO){
1513                 if (option_verbose > 3)
1514                                 ast_verbose("%s: Disabling Loop Drop detection\n",p->dev);
1515                 vpb_disable_event(p->handle, VPB_MDROP);
1516         }
1517
1518         if (ast->_state != AST_STATE_UP) {
1519                 if (p->mode == MODE_FXO){
1520                         vpb_sethook_sync(p->handle, VPB_OFFHOOK);
1521                         p->state=VPB_STATE_OFFHOOK;
1522 /*                      vpb_sleep(500);
1523                         ret = vpb_get_event_ch_async(p->handle,&je);
1524                         if ((ret == VPB_OK)&&((je.type != VPB_DROP)&&(je.type != VPB_RING))){
1525                                 if (option_verbose > 3){
1526                                                 ast_verbose(VERBOSE_PREFIX_4 "%s: Answer collected a wrong event!!\n",p->dev);
1527                                 }
1528                                 vpb_put_event(&je);
1529                         }
1530 */
1531                 }
1532                 ast_setstate(ast, AST_STATE_UP);
1533
1534                 if(option_verbose>1) 
1535                         ast_verbose( VERBOSE_PREFIX_2 "%s: Answered call from %s on %s [%s]\n", p->dev,
1536                                         p->owner->callerid, ast->name,(p->mode == MODE_FXO)?"FXO":"FXS");
1537
1538                 ast->rings = 0;
1539                 if( !p->readthread ){
1540         //              res = ast_mutex_unlock(&p->lock);
1541         //              ast_verbose("%s: unLOCKING in answer [%d]\n", p->dev,res);
1542                         ast_pthread_create(&p->readthread, NULL, do_chanreads, (void *)p);
1543                 } else {
1544                         if(option_verbose>3) 
1545                                 ast_verbose(VERBOSE_PREFIX_4 "%s: Record thread already running!!\n",p->dev);
1546                 }
1547         } else {
1548                 if(option_verbose>3) {
1549                         ast_verbose(VERBOSE_PREFIX_4 "%s: Answered state is up\n",p->dev);
1550                 }
1551         //      res = ast_mutex_unlock(&p->lock);
1552         //      ast_verbose("%s: unLOCKING in answer [%d]\n", p->dev,res);
1553         }
1554         vpb_sleep(500);
1555         if (p->mode == MODE_FXO){
1556                 if (option_verbose > 3)
1557                                 ast_verbose("%s: Re-enabling Loop Drop detection\n",p->dev);
1558                 vpb_enable_event(p->handle,VPB_MDROP);
1559         }
1560         res = ast_mutex_unlock(&p->lock);
1561 /*
1562         if(option_verbose>3) ast_verbose("%s: unLOCKING in answer [%d]\n", p->dev,res);
1563 */
1564         return 0;
1565 }
1566
1567 static struct ast_frame  *vpb_read(struct ast_channel *ast)
1568 {
1569         struct vpb_pvt *p = (struct vpb_pvt *)ast->pvt->pvt; 
1570         static struct ast_frame f = {AST_FRAME_NULL}; 
1571
1572         f.src = type;
1573         ast_log(LOG_NOTICE, "%s: vpb_read: should never be called!\n", p->dev);
1574         ast_verbose("%s: vpb_read: should never be called!\n", p->dev);
1575
1576         return &f;
1577 }
1578
1579 static inline int ast2vpbformat(int ast_format)
1580 {
1581         switch(ast_format) {
1582                 case AST_FORMAT_ALAW:
1583                         return VPB_ALAW;
1584                 case AST_FORMAT_SLINEAR:
1585                         return VPB_LINEAR;
1586                 case AST_FORMAT_ULAW:
1587                         return VPB_MULAW;
1588                 case AST_FORMAT_ADPCM:
1589                         return VPB_OKIADPCM;
1590                 default:
1591                         return -1;
1592         }
1593 }
1594
1595 static inline char * ast2vpbformatname(int ast_format)
1596 {
1597         switch(ast_format) {
1598                 case AST_FORMAT_ALAW:
1599                         return "AST_FORMAT_ALAW:VPB_ALAW";
1600                 case AST_FORMAT_SLINEAR:
1601                         return "AST_FORMAT_SLINEAR:VPB_LINEAR";
1602                 case AST_FORMAT_ULAW:
1603                         return "AST_FORMAT_ULAW:VPB_MULAW";
1604                 case AST_FORMAT_ADPCM:
1605                         return "AST_FORMAT_ADPCM:VPB_OKIADPCM";
1606                 default:
1607                         return "UNKN:UNKN";
1608         }
1609 }
1610
1611 static inline int astformatbits(int ast_format)
1612 {
1613         switch(ast_format) {
1614                 case AST_FORMAT_ALAW:
1615                 case AST_FORMAT_ULAW:
1616                         return 8;
1617                 case AST_FORMAT_SLINEAR:
1618                         return 16;
1619                 case AST_FORMAT_ADPCM:
1620                         return 4;
1621                 default:
1622                         return 8;
1623         }   
1624 }
1625
1626 int a_gain_vector(float g, short *v, int n) 
1627 {
1628         int i;
1629         float tmp;
1630         for ( i = 0; i<n; i++) {
1631                 tmp = g*v[i];
1632                 if (tmp > 32767.0)
1633                         tmp = 32767.0;
1634                 if (tmp < -32768.0)
1635                         tmp = -32768.0;
1636                 v[i] = (short)tmp;      
1637         }  
1638         return(i);
1639 }
1640
1641 /* Writes a frame of voice data to a VPB channel */
1642 static int vpb_write(struct ast_channel *ast, struct ast_frame *frame)
1643 {
1644         struct vpb_pvt *p = (struct vpb_pvt *)ast->pvt->pvt; 
1645         int res = 0, fmt = 0;
1646         struct timeval play_buf_time_start,play_buf_time_finish;
1647 //      ast_mutex_lock(&p->lock);
1648         if(option_verbose>5) 
1649                 ast_verbose("%s: vpb_write: Writing to channel\n", p->dev);
1650
1651         if (frame->frametype != AST_FRAME_VOICE) {
1652                 if(option_verbose>3) 
1653                         ast_verbose("%s: vpb_write: Don't know how to handle from type %d\n", ast->name, frame->frametype);
1654 //              ast_mutex_unlock(&p->lock);
1655                 return 0;
1656         } else if (ast->_state != AST_STATE_UP) {
1657                 if(option_verbose>3) 
1658                         ast_verbose("%s: vpb_write: Attempt to Write frame type[%d]subclass[%d] on not up chan\n",ast->name, frame->frametype, frame->subclass);
1659                 p->lastoutput = -1;
1660 //              ast_mutex_unlock(&p->lock);
1661                 return 0;
1662         }
1663         ast_log(LOG_DEBUG, "%s: vpb_write: Checked frame type..\n", p->dev);
1664
1665         fmt = ast2vpbformat(frame->subclass);
1666         if (fmt < 0) {
1667                 ast_log(LOG_WARNING, "%s: vpb_write: Cannot handle frames of %d format!\n",ast->name, frame->subclass);
1668                 return -1;
1669         }
1670         ast_log(LOG_DEBUG, "%s: vpb_write: Checked frame format..\n", p->dev);
1671
1672         ast_mutex_lock(&p->play_lock);
1673
1674         ast_log(LOG_DEBUG, "%s: vpb_write: Got play lock..\n", p->dev);
1675
1676         /* Check if we have set up the play_buf */
1677         if (p->lastoutput == -1) {
1678                 vpb_play_buf_start(p->handle, fmt);
1679                 if(option_verbose>1) {
1680                         ast_verbose("%s: vpb_write: Starting play mode (codec=%d)[%s]\n",p->dev,fmt,ast2vpbformatname(frame->subclass));
1681                 }
1682         } else if (p->lastoutput != fmt) {
1683                 vpb_play_buf_finish(p->handle);
1684                 vpb_play_buf_start(p->handle, fmt);
1685                 if(option_verbose>1) 
1686                         ast_verbose("%s: vpb_write: Changed play format (%d=>%d)\n",p->dev,p->lastoutput,fmt);
1687         }
1688         p->lastoutput = fmt;
1689
1690
1691
1692         // Apply extra gain !
1693         if( p->txswgain > MAX_VPB_GAIN )
1694                 a_gain_vector(p->txswgain - MAX_VPB_GAIN , (short*)frame->data, frame->datalen/sizeof(short));
1695
1696         ast_log(LOG_DEBUG, "%s: vpb_write: Applied gain..\n", p->dev);
1697
1698 //      gettimeofday(&tv, NULL);
1699 //      return ((double)tv.tv_sec*1000)+((double)tv.tv_usec/1000);
1700
1701         if ((p->read_state == 1)&&(p->play_buf_time<5)){
1702         gettimeofday(&play_buf_time_start,NULL);
1703         res = vpb_play_buf_sync(p->handle, (char*)frame->data, frame->datalen);
1704         if( (res == VPB_OK) && (option_verbose > 5) ) {
1705                 short * data = (short*)frame->data;
1706                 ast_verbose("%s: vpb_write: Wrote chan (codec=%d) %d %d\n", p->dev, fmt, data[0],data[1]);
1707         }
1708         gettimeofday(&play_buf_time_finish,NULL);
1709         if (play_buf_time_finish.tv_sec == play_buf_time_start.tv_sec){
1710                 p->play_buf_time=(int)((play_buf_time_finish.tv_usec-play_buf_time_start.tv_usec)/1000);
1711 //              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);
1712         }
1713         else {
1714                 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);
1715         }
1716 //      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);
1717         }
1718         else {
1719                 p->chuck_count++;
1720                 ast_log(LOG_DEBUG, "%s: vpb_write: Tossed data away, tooooo much data!![%d]\n", p->dev,p->chuck_count);
1721                 p->play_buf_time=0;
1722         }
1723
1724         ast_mutex_unlock(&p->play_lock);
1725 //      ast_mutex_unlock(&p->lock);
1726         if(option_verbose>5) 
1727                 ast_verbose("%s: vpb_write: Done Writing to channel\n", p->dev);
1728         return 0;
1729 }
1730
1731 /* Read monitor thread function. */
1732 static void *do_chanreads(void *pvt)
1733 {
1734         struct vpb_pvt *p = (struct vpb_pvt *)pvt;
1735         struct ast_frame *fr = &p->fr;
1736         char *readbuf = ((char *)p->buf) + AST_FRIENDLY_OFFSET;
1737         int bridgerec = 0;
1738         int afmt, readlen, res, fmt, trycnt=0;
1739         int ignore_dtmf;
1740         char * getdtmf_var = NULL;
1741
1742         fr->frametype = AST_FRAME_VOICE;
1743         fr->src = type;
1744         fr->mallocd = 0;
1745         fr->delivery.tv_sec = 0;
1746         fr->delivery.tv_usec = 0;
1747         fr->samples = VPB_SAMPLES;
1748         fr->offset = AST_FRIENDLY_OFFSET;
1749         memset(p->buf, 0, sizeof p->buf);
1750
1751         if (option_verbose > 2) {
1752                 ast_verbose("%s: chanreads: starting thread\n", p->dev);
1753         }  
1754         ast_mutex_lock(&p->record_lock);
1755
1756         p->stopreads = 0; 
1757         p->read_state = 1;
1758         while (!p->stopreads && p->owner) {
1759
1760                 if (option_verbose > 4)
1761                         ast_verbose("%s: chanreads: Starting cycle ...\n", p->dev);
1762                 if (option_verbose > 4)
1763                         ast_verbose("%s: chanreads: Checking bridge \n", p->dev);
1764                 if (p->bridge) {
1765                         if (p->bridge->c0 == p->owner && (p->bridge->flags & AST_BRIDGE_REC_CHANNEL_0))
1766                                 bridgerec = 1;
1767                         else if (p->bridge->c1 == p->owner && (p->bridge->flags & AST_BRIDGE_REC_CHANNEL_1))
1768                                 bridgerec = 1;
1769                         else 
1770                                 bridgerec = 0;
1771                 } else {
1772                         if (option_verbose > 4)
1773                                 ast_verbose("%s: chanreads: No native bridge.\n", p->dev);
1774                         if (p->owner->bridge){
1775                                 if (option_verbose > 4){
1776                                         ast_verbose("%s: chanreads: Got Asterisk bridge with [%s].\n", p->dev,p->owner->bridge->name);
1777                                 }
1778                                 bridgerec = 1;
1779                         }
1780                         else {
1781                                 bridgerec = 0;
1782                         }
1783                 }
1784
1785 //              if ( (p->owner->_state != AST_STATE_UP) || !bridgerec) {
1786                 if ( (p->owner->_state != AST_STATE_UP) ) {
1787                         if (option_verbose > 4) {
1788                                 if (p->owner->_state != AST_STATE_UP)
1789                                         ast_verbose("%s: chanreads: Im not up[%d]\n", p->dev,p->owner->_state);
1790                                 else
1791                                         ast_verbose("%s: chanreads: No bridgerec[%d]\n", p->dev,bridgerec);
1792                         }  
1793                         vpb_sleep(10);
1794                         continue;
1795                 }
1796
1797                 // Voicetronix DTMF detection can be triggered off ordinary speech
1798                 // This leads to annoying beeps during the conversation
1799                 // Avoid this problem by just setting VPB_GETDTMF when you want to listen for DTMF
1800                 //ignore_dtmf = 1;
1801                 ignore_dtmf = 0; /* set this to 1 to turn this feature on */
1802                 getdtmf_var = pbx_builtin_getvar_helper(p->owner,"VPB_GETDTMF");
1803                 if( getdtmf_var && ( strcasecmp( getdtmf_var, "yes" ) == 0 ) )
1804                         ignore_dtmf = 0;
1805
1806                 if( ignore_dtmf != p->last_ignore_dtmf ) {
1807                         if(option_verbose>1) 
1808                                 ast_verbose( VERBOSE_PREFIX_2 "%s:Now %s DTMF \n",
1809                                         p->dev, ignore_dtmf ? "ignoring" : "listening for");
1810                         vpb_set_event_mask(p->handle, ignore_dtmf ? VPB_EVENTS_NODTMF : VPB_EVENTS_ALL );
1811                 }
1812                 p->last_ignore_dtmf = ignore_dtmf;
1813
1814                 // Play DTMF digits here to avoid problem you get if playing a digit during
1815                 // a record operation
1816                 if (option_verbose > 5) {
1817                         ast_verbose("%s: chanreads: Checking dtmf's \n", p->dev);
1818                 }  
1819                 ast_mutex_lock(&p->play_dtmf_lock);
1820                 if( p->play_dtmf[0] ) {
1821                         // Try to ignore DTMF event we get after playing digit
1822                         // This DTMF is played by asterisk and leads to an annoying trailing beep on CISCO phones
1823                         if( !ignore_dtmf) 
1824                                 vpb_set_event_mask(p->handle, VPB_EVENTS_NODTMF );
1825                         vpb_dial_sync(p->handle,p->play_dtmf);
1826                         if(option_verbose>1) 
1827                                 ast_verbose( VERBOSE_PREFIX_2 "%s: Played DTMF %s\n",p->dev,p->play_dtmf);
1828                         p->play_dtmf[0] = '\0';
1829                         ast_mutex_unlock(&p->play_dtmf_lock);
1830                         vpb_sleep(700); // Long enough to miss echo and DTMF event
1831                         if( !ignore_dtmf) 
1832                                 vpb_set_event_mask(p->handle, VPB_EVENTS_ALL );
1833                         continue;
1834                 }
1835                 ast_mutex_unlock(&p->play_dtmf_lock);
1836
1837 //              afmt = (p->owner) ? p->owner->pvt->rawreadformat : AST_FORMAT_SLINEAR;
1838                 if (p->owner){
1839                         afmt = p->owner->pvt->rawreadformat;
1840                         ast_log(LOG_DEBUG,"%s: Record using owner format [%s]\n", p->dev, ast2vpbformatname(afmt));
1841                 }
1842                 else {
1843                         afmt = AST_FORMAT_SLINEAR;
1844                         ast_log(LOG_DEBUG,"%s: Record using default format [%s]\n", p->dev, ast2vpbformatname(afmt));
1845                 }
1846                 fmt = ast2vpbformat(afmt);
1847                 if (fmt < 0) {
1848                         ast_log(LOG_WARNING,"%s: Record failure (unsupported format %d)\n", p->dev, afmt);
1849                         return NULL;
1850                 }
1851                 readlen = VPB_SAMPLES * astformatbits(afmt) / 8;
1852
1853                 if (p->lastinput == -1) {
1854                         vpb_record_buf_start(p->handle, fmt);
1855                         vpb_reset_record_fifo_alarm(p->handle);
1856                         if(option_verbose>1) 
1857                                 ast_verbose( VERBOSE_PREFIX_2 "%s: Starting record mode (codec=%d)[%s]\n",p->dev,fmt,ast2vpbformatname(afmt));
1858                 } else if (p->lastinput != fmt) {
1859                         vpb_record_buf_finish(p->handle);
1860                         vpb_record_buf_start(p->handle, fmt);
1861                         if(option_verbose>1) 
1862                                 ast_verbose( VERBOSE_PREFIX_2 "%s: Changed record format (%d=>%d)\n",p->dev,p->lastinput,fmt);
1863                 }
1864                 p->lastinput = fmt;
1865
1866                 /* Read only if up and not bridged, or a bridge for which we can read. */
1867                 if (option_verbose > 5) {
1868                         ast_verbose("%s: chanreads: getting buffer!\n", p->dev);
1869                 }  
1870                 if( (res = vpb_record_buf_sync(p->handle, readbuf, readlen) ) == VPB_OK ) {
1871                         if (option_verbose > 5) {
1872                                 ast_verbose("%s: chanreads: got buffer!\n", p->dev);
1873                         }  
1874                         // Apply extra gain !
1875                         if( p->rxswgain > MAX_VPB_GAIN )
1876                                 a_gain_vector(p->rxswgain - MAX_VPB_GAIN , (short*)readbuf, readlen/sizeof(short));
1877                         if (option_verbose > 5) {
1878                                 ast_verbose("%s: chanreads: applied gain\n", p->dev);
1879                         }  
1880
1881                         fr->subclass = afmt;
1882                         fr->data = readbuf;
1883                         fr->datalen = readlen;
1884
1885                         // Using trylock here to prevent deadlock when channel is hungup
1886                         // (ast_hangup() immediately gets lock)
1887                         if (p->owner && !p->stopreads ) {
1888                                 if (option_verbose > 5) {
1889                                         ast_verbose("%s: chanreads: queueing buffer on read frame q (state[%d])\n", p->dev,p->owner->_state);
1890                                 }  
1891                                 do {
1892                                         res = ast_mutex_trylock(&p->owner->lock);
1893                                         trycnt++;
1894                                 } while((res !=0)&&(trycnt<300));
1895                                 if (res==0)  {
1896                                         ast_queue_frame(p->owner, fr);
1897                                         ast_mutex_unlock(&p->owner->lock);
1898                                 } else {
1899                                         if (option_verbose > 4) 
1900                                                 ast_verbose("%s: chanreads: Couldnt get lock after %d tries!\n", p->dev,trycnt);
1901                                 }
1902                                 trycnt=0;
1903                                 
1904 /*
1905                                 res = ast_mutex_trylock(&p->owner->lock);
1906 //                              res=0;
1907                                 if (res==0)  {
1908                                         ast_queue_frame(p->owner, fr);
1909                                         ast_mutex_unlock(&p->owner->lock);
1910                                 } else {
1911                                         if (res == EINVAL )
1912                                                 if (option_verbose > 4) ast_verbose("%s: chanreads: try owner->lock gave me EINVAL[%d]\n", p->dev,res);
1913                                         else if (res == EBUSY )
1914                                                 if (option_verbose > 4) ast_verbose("%s: chanreads: try owner->lock gave me EBUSY[%d]\n", p->dev,res);
1915                                         while(res !=0){
1916                                         res = ast_mutex_trylock(&p->owner->lock);
1917                                         }
1918                                         if (res==0)  {
1919                                                 ast_queue_frame(p->owner, fr);
1920                                                 ast_mutex_unlock(&p->owner->lock);
1921                                         }
1922                                         else {
1923                                                 if (res == EINVAL )
1924                                                         if (option_verbose > 4) ast_verbose("%s: chanreads: try owner->lock gave me EINVAL[%d]\n", p->dev,res);
1925                                                 else if (res == EBUSY )
1926                                                         if (option_verbose > 4) ast_verbose("%s: chanreads: try owner->lock gave me EBUSY[%d]\n", p->dev,res);
1927                                                 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);
1928                                                 //assert(p->dev!=p->dev);
1929                                         }
1930                                 }
1931 */
1932                                 if (option_verbose > 6) {
1933                                         short * data = (short*)readbuf;
1934                                         ast_verbose("%s: Read channel (codec=%d) %d %d\n", p->dev, fmt, data[0], data[1] );
1935                                 }  
1936                         }
1937                         else {
1938                                 if (option_verbose > 4) {
1939                                         ast_verbose("%s: p->stopreads[%d] p->owner[%p]\n", p->dev, p->stopreads,(void *)p->owner);
1940                                 }  
1941                         }
1942                 } else {
1943                         ast_log(LOG_WARNING,"%s: Record failure (%s)\n", p->dev, vpb_strerror(res));
1944                         vpb_record_buf_finish(p->handle);
1945                         vpb_record_buf_start(p->handle, fmt);
1946                 }
1947                 if (option_verbose > 4)
1948                         ast_verbose("%s: chanreads: Finished cycle...\n", p->dev);
1949         }
1950         p->read_state=0;
1951
1952         /* When stopreads seen, go away! */
1953         vpb_record_buf_finish(p->handle);
1954         p->read_state=0;
1955         ast_mutex_unlock(&p->record_lock);
1956
1957         if (option_verbose > 1)
1958                 ast_verbose(VERBOSE_PREFIX_2 "%s: Ending record mode (%d/%s)\n",
1959                          p->dev, p->stopreads, p->owner? "yes" : "no");     
1960         return NULL;
1961 }
1962
1963 static struct ast_channel *vpb_new(struct vpb_pvt *me, int state, char *context)
1964 {
1965         struct ast_channel *tmp; 
1966
1967         if (me->owner) {
1968             ast_log(LOG_WARNING, "Called vpb_new on owned channel (%s) ?!\n", me->dev);
1969             return NULL;
1970         }
1971         if (option_verbose > 3)
1972                 ast_verbose("%s: New call for context [%s]\n",me->dev,context);
1973             
1974         tmp = ast_channel_alloc(1);
1975         if (tmp) {
1976                 strncpy(tmp->name, me->dev, sizeof(tmp->name) - 1);
1977                 tmp->type = type;
1978                
1979                 // Linear is the preferred format. Although Voicetronix supports other formats
1980                 // they are all converted to/from linear in the vpb code. Best for us to use
1981                 // linear since we can then adjust volume in this modules.
1982                 tmp->nativeformats = prefformat;
1983                 tmp->pvt->rawreadformat = AST_FORMAT_SLINEAR;
1984                 tmp->pvt->rawwriteformat =  AST_FORMAT_SLINEAR;
1985                 ast_setstate(tmp, state);
1986                 if (state == AST_STATE_RING)
1987                         tmp->rings = 1;
1988                 tmp->pvt->pvt = me;
1989                 /* set call backs */
1990                 tmp->pvt->send_digit = vpb_digit;
1991                 tmp->pvt->call = vpb_call;
1992                 tmp->pvt->hangup = vpb_hangup;
1993                 tmp->pvt->answer = vpb_answer;
1994                 tmp->pvt->read = vpb_read;
1995                 tmp->pvt->write = vpb_write;
1996                 tmp->pvt->bridge = vpb_bridge;
1997                 tmp->pvt->indicate = vpb_indicate;
1998                 tmp->pvt->fixup = vpb_fixup;
1999                 
2000                 strncpy(tmp->context, context, sizeof(tmp->context)-1);
2001                 if (strlen(me->ext))
2002                         strncpy(tmp->exten, me->ext, sizeof(tmp->exten)-1);
2003                 else
2004                         strncpy(tmp->exten, "s",  sizeof(tmp->exten) - 1);
2005                 if (strlen(me->language))
2006                         strncpy(tmp->language, me->language, sizeof(tmp->language)-1);
2007
2008                 me->owner = tmp;
2009      
2010                 me->bridge = NULL;
2011                 me->lastoutput = -1;
2012                 me->lastinput = -1;
2013                 me->last_ignore_dtmf = 1;
2014                 me->readthread = 0;
2015                 me->play_dtmf[0] = '\0';
2016                 
2017                 me->lastgrunt  = get_time_in_ms(); /* Assume at least one grunt tone seen now. */
2018
2019                 ast_mutex_lock(&usecnt_lock);
2020                 usecnt++;
2021                 ast_mutex_unlock(&usecnt_lock);
2022                 ast_update_use_count();
2023                 if (state != AST_STATE_DOWN) {
2024                         if (ast_pbx_start(tmp)) {
2025                                 ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
2026                                 ast_hangup(tmp);
2027                         }
2028                 }
2029         } else {
2030                 ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
2031         }
2032         return tmp;
2033 }
2034
2035 static struct ast_channel *vpb_request(char *type, int format, void *data) 
2036 {
2037         int oldformat;
2038         struct vpb_pvt *p;
2039         struct ast_channel *tmp = NULL;
2040         char *name = strdup(data ? (char *)data : "");
2041         char *s, *sepstr;
2042         int group=-1;
2043
2044         oldformat = format;
2045         format &= prefformat;
2046         if (!format) {
2047                 ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", oldformat);
2048                 return NULL;
2049         }
2050
2051         sepstr = name;
2052         s = strsep(&sepstr, "/"); /* Handle / issues */
2053         if (!s) 
2054                 s = "";
2055         /* Check if we are looking for a group */
2056         if (toupper(name[0]) == 'G' || toupper(name[0])=='R') {
2057                 group=atoi(name+1);     
2058         }
2059         /* Search for an unowned channel */
2060         ast_mutex_lock(&iflock); {
2061                 p = iflist;
2062                 while(p) {
2063                         if (group == -1){
2064                                 if (strncmp(s, p->dev + 4, sizeof p->dev) == 0) {
2065                                         if (!p->owner) {
2066                                                 tmp = vpb_new(p, AST_STATE_DOWN, p->context);
2067                                                 break;
2068                                         }
2069                                 }
2070                         }
2071                         else {
2072                                 if ((p->group == group) && (!p->owner)) {
2073                                         tmp = vpb_new(p, AST_STATE_DOWN, p->context);
2074                                         break;
2075                                 }
2076                         }
2077                         p = p->next;
2078                 }
2079         } ast_mutex_unlock(&iflock);
2080
2081
2082         if (option_verbose > 1) 
2083                 ast_verbose(VERBOSE_PREFIX_2 " %s requested, got: [%s]\n",
2084                 name, tmp ? tmp->name : "None");
2085
2086         free(name);
2087
2088         restart_monitor();
2089         return tmp;
2090 }
2091
2092 static float parse_gain_value(char *gain_type, char *value)
2093 {
2094         float gain;
2095
2096         /* try to scan number */
2097         if (sscanf(value, "%f", &gain) != 1)
2098         {
2099                 ast_log(LOG_ERROR, "Invalid %s value '%s' in '%s' config\n", value, gain_type, config);
2100                 return DEFAULT_GAIN;
2101         }
2102
2103
2104         /* percentage? */
2105         //if (value[strlen(value) - 1] == '%')
2106         //      return gain / (float)100;
2107
2108         return gain;
2109 }
2110
2111 int load_module()
2112 {
2113         struct ast_config *cfg;
2114         struct ast_variable *v;
2115         struct vpb_pvt *tmp;
2116         int board = 0, group = 0;
2117         int mode = MODE_IMMEDIATE;
2118         float txgain = DEFAULT_GAIN, rxgain = DEFAULT_GAIN; 
2119         float txswgain = 0, rxswgain = 0; 
2120         int first_channel = 1;
2121         int echo_cancel = DEFAULT_ECHO_CANCEL;
2122         int error = 0; /* Error flag */
2123         int bal1 = -1; // Special value - means do not set
2124         int bal2 = -1; 
2125         int bal3 = -1;
2126         char * callerid = NULL;
2127
2128         cfg = ast_load(config);
2129
2130         /* We *must* have a config file otherwise stop immediately */
2131         if (!cfg) {
2132                 ast_log(LOG_ERROR, "Unable to load config %s\n", config);
2133                 return -1;
2134         }  
2135
2136         vpb_seterrormode(VPB_ERROR_CODE);
2137
2138         ast_mutex_lock(&iflock); {
2139                 v = ast_variable_browse(cfg, "interfaces");
2140                 while(v) {
2141                         /* Create the interface list */
2142                         if (strcasecmp(v->name, "board") == 0) {
2143                                 board = atoi(v->value);
2144                         } else  if (strcasecmp(v->name, "group") == 0){
2145                                 group = atoi(v->value);
2146                         } else  if (strcasecmp(v->name, "useloopdrop") == 0){
2147                                 UseLoopDrop = atoi(v->value);
2148                         } else  if (strcasecmp(v->name, "usenativebridge") == 0){
2149                                 UseNativeBridge = atoi(v->value);
2150                         } else if (strcasecmp(v->name, "channel") == 0) {
2151                                 int channel = atoi(v->value);
2152                                 tmp = mkif(board, channel, mode, txgain, rxgain, txswgain, rxswgain, bal1, bal2, bal3, callerid, echo_cancel,group);
2153                                 if (tmp) {
2154                                         if(first_channel) {
2155                                                 mkbrd( tmp->vpb_model, echo_cancel );
2156                                                 first_channel = 0;
2157                                         }
2158                                         tmp->next = iflist;
2159                                         iflist = tmp;
2160                                 } else {
2161                                         ast_log(LOG_ERROR, 
2162                                         "Unable to register channel '%s'\n", v->value);
2163                                         error = -1;
2164                                         goto done;
2165                                 }
2166                                 callerid = NULL;
2167                         } else if (strcasecmp(v->name, "language") == 0) {
2168                                 strncpy(language, v->value, sizeof(language)-1);
2169                         } else if (strcasecmp(v->name, "callerid") == 0) {
2170                                 callerid = strdup(v->value);
2171                         } else if (strcasecmp(v->name, "mode") == 0) {
2172                                 if (strncasecmp(v->value, "di", 2) == 0) 
2173                                         mode = MODE_DIALTONE;
2174                                 else if (strncasecmp(v->value, "im", 2) == 0)
2175                                         mode = MODE_IMMEDIATE;
2176                                 else if (strncasecmp(v->value, "fx", 2) == 0)
2177                                         mode = MODE_FXO;
2178                                 else
2179                                         ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
2180                         } else if (!strcasecmp(v->name, "context")) {
2181                                 strncpy(context, v->value, sizeof(context)-1);
2182                         } else if (!strcasecmp(v->name, "echocancel")) {
2183                                 if (!strcasecmp(v->value, "off")) 
2184                                         echo_cancel = 0;
2185                         } else if (strcasecmp(v->name, "txgain") == 0) {
2186                                 txswgain = parse_gain_value(v->name, v->value);
2187                         } else if (strcasecmp(v->name, "rxgain") == 0) {
2188                                 rxswgain = parse_gain_value(v->name, v->value);
2189                         } else if (strcasecmp(v->name, "txhwgain") == 0) {
2190                                 txgain = parse_gain_value(v->name, v->value);
2191                         } else if (strcasecmp(v->name, "rxhwgain") == 0) {
2192                                 rxgain = parse_gain_value(v->name, v->value);
2193                         } else if (strcasecmp(v->name, "bal1") == 0) {
2194                                 bal1 = strtol(v->value, NULL, 16);
2195                                 if(bal1<0 || bal1>255) {
2196                                         ast_log(LOG_WARNING, "Bad bal1 value: %d\n", bal1);
2197                                         bal1 = -1;
2198                                 }
2199                         } else if (strcasecmp(v->name, "bal2") == 0) {
2200                                 bal2 = strtol(v->value, NULL, 16);
2201                                 if(bal2<0 || bal2>255) {
2202                                         ast_log(LOG_WARNING, "Bad bal2 value: %d\n", bal2);
2203                                         bal2 = -1;
2204                                 }
2205                         } else if (strcasecmp(v->name, "bal3") == 0) {
2206                                 bal3 = strtol(v->value, NULL, 16);
2207                                 if(bal3<0 || bal3>255) {
2208                                         ast_log(LOG_WARNING, "Bad bal3 value: %d\n", bal3);
2209                                         bal3 = -1;
2210                                 }
2211                         } else if (strcasecmp(v->name, "grunttimeout") == 0) {
2212                                 gruntdetect_timeout = 1000*atoi(v->value);
2213                         }
2214                         v = v->next;
2215                 }
2216
2217                 if (gruntdetect_timeout < 1000)
2218                         gruntdetect_timeout = 1000;
2219
2220                 done: (void)0;
2221         } ast_mutex_unlock(&iflock);
2222
2223         ast_destroy(cfg);
2224
2225         if (!error && ast_channel_register(type, tdesc, prefformat, vpb_request) != 0) {
2226                 ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
2227                 error = -1;
2228         }
2229
2230
2231         if (error)
2232                 unload_module();
2233         else 
2234                 restart_monitor(); /* And start the monitor for the first time */
2235
2236         return error;
2237 }
2238
2239
2240 int unload_module()
2241 {
2242         struct vpb_pvt *p;
2243         /* First, take us out of the channel loop */
2244         ast_channel_unregister(type);
2245
2246         ast_mutex_lock(&iflock); {
2247                 /* Hangup all interfaces if they have an owner */
2248                 p = iflist;
2249                 while(p) {
2250                         if (p->owner)
2251                                 ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
2252                         p = p->next;
2253                 }
2254                 iflist = NULL;
2255         } ast_mutex_unlock(&iflock);
2256
2257         ast_mutex_lock(&monlock); {
2258                 if (mthreadactive > -1) {
2259                         pthread_cancel(monitor_thread);
2260                         pthread_join(monitor_thread, NULL);
2261                 }
2262                 mthreadactive = -2;
2263         } ast_mutex_unlock(&monlock);
2264
2265         ast_mutex_lock(&iflock); {
2266                 /* Destroy all the interfaces and free their memory */
2267
2268                 while(iflist) {
2269                         p = iflist;                 
2270                         ast_mutex_destroy(&p->lock);
2271                         pthread_cancel(p->readthread);
2272                         ast_mutex_destroy(&p->owner_lock);
2273                         ast_mutex_destroy(&p->record_lock);
2274                         ast_mutex_destroy(&p->play_lock);
2275                         ast_mutex_destroy(&p->play_dtmf_lock);
2276                         p->readthread = 0;
2277
2278                         vpb_close(p->handle);
2279
2280                         iflist = iflist->next;
2281
2282                         free(p);
2283                 }
2284                 iflist = NULL;
2285         } ast_mutex_unlock(&iflock);
2286
2287         ast_mutex_lock(&bridge_lock); {
2288                 memset(bridges, 0, sizeof bridges);          
2289         } ast_mutex_unlock(&bridge_lock);
2290         ast_mutex_destroy(&bridge_lock);
2291         for(int i = 0; i < max_bridges; i++ ) {
2292                 ast_mutex_destroy(&bridges[i].lock);
2293                 pthread_cond_destroy(&bridges[i].cond);
2294         }
2295         free(bridges);
2296
2297         return 0;
2298 }
2299
2300 int usecount()
2301 {
2302         int res;
2303         ast_mutex_lock(&usecnt_lock);
2304         res = usecnt;
2305         ast_mutex_unlock(&usecnt_lock);
2306         return res;
2307 }
2308
2309 char *description()
2310 {
2311         return desc;
2312 }
2313
2314 char *key()
2315 {
2316         return ASTERISK_GPL_KEY;
2317 }
2318
2319 /*
2320 #if defined(__cplusplus) || defined(c_plusplus)
2321  }
2322 #endif
2323 */