jansson-bundled: Patch for off-nominal crash.
[asterisk/asterisk.git] / channels / chan_vpb.cc
1 /*
2  * Asterisk -- An open source telephony toolkit.
3  *
4  * Copyright (C) 2003, Paul Bagyenda
5  * Paul Bagyenda <bagyenda@dsmagic.com>
6  * Copyright (C) 2004 - 2005, Ben Kramer
7  * Ben Kramer <ben@voicetronix.com.au>
8  *
9  * Daniel Bichara <daniel@bichara.com.br> - Brazilian CallerID detection (c)2004
10  *
11  * Welber Silveira - welberms@magiclink.com.br - (c)2004
12  * Copying CLID string to propper structure after detection
13  *
14  * See http://www.asterisk.org for more information about
15  * the Asterisk project. Please do not directly contact
16  * any of the maintainers of this project for assistance;
17  * the project provides a web site, mailing lists and IRC
18  * channels for your use.
19  *
20  * This program is free software, distributed under the terms of
21  * the GNU General Public License Version 2. See the LICENSE file
22  * at the top of the source tree.
23  */
24
25 /*! \file
26  *
27  * \brief VoiceTronix Interface driver
28  *
29  * \ingroup channel_drivers
30  */
31
32 /*! \li \ref chan_vpb.cc uses the configuration file \ref vpb.conf
33  * \addtogroup configuration_file
34  */
35
36 /*! \page vpb.conf vpb.conf
37  * \verbinclude vpb.conf.sample
38  */
39
40 /*
41  * XXX chan_vpb needs its native bridge code converted to the
42  * new bridge technology scheme.  The chan_dahdi native bridge
43  * code can be used as an example.  It is unlikely that this
44  * will ever get done.
45  *
46  * The existing native bridge code is marked with the
47  * VPB_NATIVE_BRIDGING conditional.
48  */
49
50 /*** MODULEINFO
51         <depend>vpb</depend>
52         <defaultenabled>no</defaultenabled>
53         <support_level>deprecated</support_level>
54  ***/
55
56 #include <vpbapi.h>
57
58 extern "C" {
59
60 #include "asterisk.h"
61
62 #include "asterisk/lock.h"
63 #include "asterisk/utils.h"
64 #include "asterisk/channel.h"
65 #include "asterisk/config.h"
66 #include "asterisk/module.h"
67 #include "asterisk/pbx.h"
68 #include "asterisk/callerid.h"
69 #include "asterisk/dsp.h"
70 #include "asterisk/features.h"
71 #include "asterisk/musiconhold.h"
72 #include "asterisk/format_cache.h"
73 }
74
75 #include <sys/socket.h>
76 #include <sys/time.h>
77 #include <arpa/inet.h>
78 #include <fcntl.h>
79 #include <sys/ioctl.h>
80 #include <ctype.h>
81
82 #include <assert.h>
83
84 #ifdef pthread_create
85 #undef pthread_create
86 #endif
87
88 #define DEFAULT_GAIN 0
89 #define DEFAULT_ECHO_CANCEL 1
90
91 #define VPB_SAMPLES 160
92 #define VPB_MAX_BUF VPB_SAMPLES*4 + AST_FRIENDLY_OFFSET
93
94 #define VPB_NULL_EVENT 200
95
96 #define VPB_WAIT_TIMEOUT 4000
97
98 #define MAX_VPB_GAIN 12.0
99 #define MIN_VPB_GAIN -12.0
100
101 #define DTMF_CALLERID
102 #define DTMF_CID_START 'D'
103 #define DTMF_CID_STOP 'C'
104
105 /**/
106 #if defined(__cplusplus) || defined(c_plusplus)
107  extern "C" {
108 #endif
109 /**/
110
111 static const char tdesc[] = "Standard VoiceTronix API Driver";
112 static const char config[] = "vpb.conf";
113
114 /* Default context for dialtone mode */
115 static char context[AST_MAX_EXTENSION] = "default";
116
117 /* Default language */
118 static char language[MAX_LANGUAGE] = "";
119
120 static int gruntdetect_timeout = 3600000; /* Grunt detect timeout is 1hr. */
121
122 /* Protect the interface list (of vpb_pvt's) */
123 AST_MUTEX_DEFINE_STATIC(iflock);
124
125 /* Protect the monitoring thread, so only one process can kill or start it, and not
126    when it's doing something critical. */
127 AST_MUTEX_DEFINE_STATIC(monlock);
128
129 /* This is the thread for the monitor which checks for input on the channels
130    which are not currently in use.  */
131 static pthread_t monitor_thread;
132
133 static int mthreadactive = -1; /* Flag for monitoring monitorthread.*/
134
135
136 static int restart_monitor(void);
137
138 /* The private structures of the VPB channels are
139    linked for selecting outgoing channels */
140
141 #define MODE_DIALTONE   1
142 #define MODE_IMMEDIATE  2
143 #define MODE_FXO        3
144
145 /* Pick a country or add your own! */
146 /* These are the tones that are played to the user */
147 #define TONES_AU
148 /* #define TONES_USA */
149
150 #ifdef TONES_AU
151 static VPB_TONE Dialtone     = {440,    440,    440,    -10,    -10,    -10,    5000,   0   };
152 static VPB_TONE Busytone     = {470,    0,      0,      -10,    -100,   -100,   5000,   0 };
153 static VPB_TONE Ringbacktone = {400,    50,     440,    -10,    -10,    -10,    1400,   800 };
154 #endif
155 #ifdef TONES_USA
156 static VPB_TONE Dialtone     = {350, 440,   0, -16,   -16, -100, 10000,    0};
157 static VPB_TONE Busytone     = {480, 620,   0, -10,   -10, -100,   500,  500};
158 static VPB_TONE Ringbacktone = {440, 480,   0, -20,   -20, -100,  2000, 4000};
159 #endif
160
161 /* grunt tone defn's */
162 #if 0
163 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 } } };
164 #endif
165 static VPB_DETECT toned_ungrunt = { 2, VPB_GRUNT, 1, 2000, 1, 0, 0, -40, 0, 0, 30, 40, { { 0, 0, 0, 0 } } };
166
167 /* Use loop polarity detection for CID */
168 static int UsePolarityCID=0;
169
170 /* Use loop drop detection */
171 static int UseLoopDrop=1;
172
173 /* To use or not to use Native bridging */
174 static int UseNativeBridge=1;
175
176 /* Use Asterisk Indication or VPB */
177 static int use_ast_ind=0;
178
179 /* Use Asterisk DTMF detection or VPB */
180 static int use_ast_dtmfdet=0;
181
182 static int relaxdtmf=0;
183
184 /* Use Asterisk DTMF play back or VPB */
185 static int use_ast_dtmf=0;
186
187 /* Break for DTMF on native bridge ? */
188 static int break_for_dtmf=1;
189
190 /* Set EC suppression threshold */
191 static short ec_supp_threshold=-1;
192
193 /* Inter Digit Delay for collecting DTMF's */
194 static int dtmf_idd = 3000;
195
196 #define TIMER_PERIOD_RINGBACK 2000
197 #define TIMER_PERIOD_BUSY 700
198 #define TIMER_PERIOD_RING 4000
199 static int timer_period_ring = TIMER_PERIOD_RING;
200
201 #define VPB_EVENTS_ALL (VPB_MRING|VPB_MDIGIT|VPB_MDTMF|VPB_MTONEDETECT|VPB_MTIMEREXP \
202                         |VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
203                         |VPB_MRING_OFF|VPB_MDROP|VPB_MSTATION_FLASH)
204 #define VPB_EVENTS_NODROP (VPB_MRING|VPB_MDIGIT|VPB_MDTMF|VPB_MTONEDETECT|VPB_MTIMEREXP \
205                         |VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
206                         |VPB_MRING_OFF|VPB_MSTATION_FLASH)
207 #define VPB_EVENTS_NODTMF (VPB_MRING|VPB_MDIGIT|VPB_MTONEDETECT|VPB_MTIMEREXP \
208                         |VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
209                         |VPB_MRING_OFF|VPB_MDROP|VPB_MSTATION_FLASH)
210 #define VPB_EVENTS_STAT (VPB_MRING|VPB_MDIGIT|VPB_MDTMF|VPB_MTONEDETECT|VPB_MTIMEREXP \
211                         |VPB_MSTATION_OFFHOOK|VPB_MSTATION_ONHOOK \
212                         |VPB_MRING_OFF|VPB_MSTATION_FLASH)
213
214
215 /* Dialing parameters for Australia */
216 /* #define DIAL_WITH_CALL_PROGRESS */
217 VPB_TONE_MAP DialToneMap[] = {  { VPB_BUSY, VPB_CALL_DISCONNECT, 0 },
218                                 { VPB_DIAL, VPB_CALL_DIALTONE, 0 },
219                                 { VPB_RINGBACK, VPB_CALL_RINGBACK, 0 },
220                                 { VPB_BUSY, VPB_CALL_BUSY, 0 },
221                                 { VPB_GRUNT, VPB_CALL_GRUNT, 0 },
222                                 { 0, 0, 1 } };
223 #define VPB_DIALTONE_WAIT 2000 /* Wait up to 2s for a dialtone */
224 #define VPB_RINGWAIT 4000 /* Wait up to 4s for ring tone after dialing */
225 #define VPB_CONNECTED_WAIT 4000 /* If no ring tone detected for 4s then consider call connected */
226 #define TIMER_PERIOD_NOANSWER 120000 /* Let it ring for 120s before deciding theres noone there */
227
228 #define MAX_BRIDGES_V4PCI 2
229 #define MAX_BRIDGES_V12PCI 128
230
231 /* port states */
232 #define VPB_STATE_ONHOOK        0
233 #define VPB_STATE_OFFHOOK       1
234 #define VPB_STATE_DIALLING      2
235 #define VPB_STATE_JOINED        3
236 #define VPB_STATE_GETDTMF       4
237 #define VPB_STATE_PLAYDIAL      5
238 #define VPB_STATE_PLAYBUSY      6
239 #define VPB_STATE_PLAYRING      7
240
241 #define VPB_GOT_RXHWG           1
242 #define VPB_GOT_TXHWG           2
243 #define VPB_GOT_RXSWG           4
244 #define VPB_GOT_TXSWG           8
245
246 typedef struct  {
247         int inuse;
248         struct ast_channel *c0, *c1, **rc;
249         struct ast_frame **fo;
250         int flags;
251         ast_mutex_t lock;
252         ast_cond_t cond;
253         int endbridge;
254 } vpb_bridge_t;
255
256 static vpb_bridge_t * bridges;
257 static int max_bridges = MAX_BRIDGES_V4PCI;
258
259 AST_MUTEX_DEFINE_STATIC(bridge_lock);
260
261 typedef enum {
262         vpb_model_unknown = 0,
263         vpb_model_v4pci,
264         vpb_model_v12pci
265 } vpb_model_t;
266
267 static struct vpb_pvt {
268
269         ast_mutex_t owner_lock;           /*!< Protect blocks that expect ownership to remain the same */
270         struct ast_channel *owner;        /*!< Channel who owns us, possibly NULL */
271
272         int golock;                       /*!< Got owner lock ? */
273
274         int mode;                         /*!< fxo/imediate/dialtone */
275         int handle;                       /*!< Handle for vpb interface */
276
277         int state;                        /*!< used to keep port state (internal to driver) */
278
279         int group;                        /*!< Which group this port belongs to */
280         ast_group_t callgroup;            /*!< Call group */
281         ast_group_t pickupgroup;          /*!< Pickup group */
282
283
284         char dev[256];                    /*!< Device name, eg vpb/1-1 */
285         vpb_model_t vpb_model;            /*!< card model */
286
287         struct ast_frame f, fr;           /*!< Asterisk frame interface */
288         char buf[VPB_MAX_BUF];            /*!< Static buffer for reading frames */
289
290         int dialtone;                     /*!< NOT USED */
291         float txgain, rxgain;             /*!< Hardware gain control */
292         float txswgain, rxswgain;         /*!< Software gain control */
293
294         int wantdtmf;                     /*!< Waiting for DTMF. */
295         char context[AST_MAX_EXTENSION];  /*!< The context for this channel */
296
297         char ext[AST_MAX_EXTENSION];      /*!< DTMF buffer for the ext[ens] */
298         char language[MAX_LANGUAGE];      /*!< language being used */
299         char callerid[AST_MAX_EXTENSION]; /*!< CallerId used for directly connected phone */
300         int  callerid_type;               /*!< Caller ID type: 0=>none 1=>vpb 2=>AstV23 3=>AstBell */
301         char cid_num[AST_MAX_EXTENSION];
302         char cid_name[AST_MAX_EXTENSION];
303
304         int dtmf_caller_pos;              /*!< DTMF CallerID detection (Brazil)*/
305
306         int lastoutput;                   /*!< Holds the last Audio format output'ed */
307         int lastinput;                    /*!< Holds the last Audio format input'ed */
308         int last_ignore_dtmf;
309
310         void *busy_timer;                 /*!< Void pointer for busy vpb_timer */
311         int busy_timer_id;                /*!< unique timer ID for busy timer */
312
313         void *ringback_timer;             /*!< Void pointer for ringback vpb_timer */
314         int ringback_timer_id;            /*!< unique timer ID for ringback timer */
315
316         void *ring_timer;                 /*!< Void pointer for ring vpb_timer */
317         int ring_timer_id;                /*!< unique timer ID for ring timer */
318
319         void *dtmfidd_timer;              /*!< Void pointer for DTMF IDD vpb_timer */
320         int dtmfidd_timer_id;             /*!< unique timer ID for DTMF IDD timer */
321
322         struct ast_dsp *vad;              /*!< AST  Voice Activation Detection dsp */
323
324         struct timeval lastgrunt;         /*!< time stamp of last grunt event */
325
326         ast_mutex_t lock;                 /*!< This one just protects bridge ptr below */
327         vpb_bridge_t *bridge;
328
329         int stopreads;                    /*!< Stop reading...*/
330         int read_state;                   /*!< Read state */
331         int chuck_count;                  /*!< a count of packets weve chucked away!*/
332         pthread_t readthread;             /*!< For monitoring read channel. One per owned channel. */
333
334         ast_mutex_t record_lock;          /*!< This one prevents reentering a record_buf block */
335         ast_mutex_t play_lock;            /*!< This one prevents reentering a play_buf block */
336         int  play_buf_time;               /*!< How long the last play_buf took */
337         struct timeval lastplay;          /*!< Last play time */
338
339         ast_mutex_t play_dtmf_lock;
340         char play_dtmf[16];
341
342         int faxhandled;                   /*!< has a fax tone been handled ? */
343
344         struct vpb_pvt *next;             /*!< Next channel in list */
345
346 } *iflist = NULL;
347
348 static struct ast_channel *vpb_new(struct vpb_pvt *i, enum ast_channel_state state, const char *context, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor);
349 static void *do_chanreads(void *pvt);
350 static struct ast_channel *vpb_request(const char *type, struct ast_format_cap *cap, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor, const char *data, int *cause);
351 static int vpb_digit_begin(struct ast_channel *ast, char digit);
352 static int vpb_digit_end(struct ast_channel *ast, char digit, unsigned int duration);
353 static int vpb_call(struct ast_channel *ast, const char *dest, int timeout);
354 static int vpb_hangup(struct ast_channel *ast);
355 static int vpb_answer(struct ast_channel *ast);
356 static struct ast_frame *vpb_read(struct ast_channel *ast);
357 static int vpb_write(struct ast_channel *ast, struct ast_frame *frame);
358 static int vpb_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen);
359 static int vpb_fixup(struct ast_channel *oldchan, struct ast_channel *newchan);
360
361 static struct ast_channel_tech vpb_tech = {
362         .type = "vpb",
363         .description = tdesc,
364         .capabilities = NULL,
365         .properties = 0,
366         .requester = vpb_request,
367         .requester_with_stream_topology = NULL,
368         .devicestate = NULL,
369         .presencestate = NULL,
370         .send_digit_begin = vpb_digit_begin,
371         .send_digit_end = vpb_digit_end,
372         .call = vpb_call,
373         .hangup = vpb_hangup,
374         .answer = vpb_answer,
375         .read = vpb_read,
376         .read_stream = NULL,
377         .write = vpb_write,
378         .write_stream = NULL,
379         .send_text = NULL,
380         .send_image = NULL,
381         .send_html = NULL,
382         .exception = NULL,
383         .early_bridge = NULL,
384         .indicate = vpb_indicate,
385         .fixup = vpb_fixup,
386         .setoption = NULL,
387         .queryoption = NULL,
388         .transfer = NULL,
389         .write_video = NULL,
390         .write_text = NULL,
391         .func_channel_read = NULL,
392         .func_channel_write = NULL,
393 };
394
395 static struct ast_channel_tech vpb_tech_indicate = {
396         .type = "vpb",
397         .description = tdesc,
398         .capabilities = NULL,
399         .properties = 0,
400         .requester = vpb_request,
401         .requester_with_stream_topology = NULL,
402         .devicestate = NULL,
403         .presencestate = NULL,
404         .send_digit_begin = vpb_digit_begin,
405         .send_digit_end = vpb_digit_end,
406         .call = vpb_call,
407         .hangup = vpb_hangup,
408         .answer = vpb_answer,
409         .read = vpb_read,
410         .read_stream = NULL,
411         .write = vpb_write,
412         .write_stream = NULL,
413         .send_text = NULL,
414         .send_image = NULL,
415         .send_html = NULL,
416         .exception = NULL,
417         .early_bridge = NULL,
418         .indicate = NULL,
419         .fixup = vpb_fixup,
420         .setoption = NULL,
421         .queryoption = NULL,
422         .transfer = NULL,
423         .write_video = NULL,
424         .write_text = NULL,
425         .func_channel_read = NULL,
426         .func_channel_write = NULL,
427 };
428
429 #if defined(VPB_NATIVE_BRIDGING)
430 /* Can't get ast_vpb_bridge() working on v4pci without either a horrible
431 *  high pitched feedback noise or bad hiss noise depending on gain settings
432 *  Get asterisk to do the bridging
433 */
434 #define BAD_V4PCI_BRIDGE
435
436 /* This one enables a half duplex bridge which may be required to prevent high pitched
437  * feedback when getting asterisk to do the bridging and when using certain gain settings.
438  */
439 /* #define HALF_DUPLEX_BRIDGE */
440
441 /* This is the Native bridge code, which Asterisk will try before using its own bridging code */
442 static enum ast_bridge_result ast_vpb_bridge(struct ast_channel *c0, struct ast_channel *c1, int flags, struct ast_frame **fo, struct ast_channel **rc, int timeoutms)
443 {
444         struct vpb_pvt *p0 = (struct vpb_pvt *)ast_channel_tech_pvt(c0);
445         struct vpb_pvt *p1 = (struct vpb_pvt *)ast_channel_tech_pvt(c1);
446         int i;
447         int res;
448         struct ast_channel *cs[3];
449         struct ast_channel *who;
450         struct ast_frame *f;
451
452         cs[0] = c0;
453         cs[1] = c1;
454
455         #ifdef BAD_V4PCI_BRIDGE
456         if (p0->vpb_model == vpb_model_v4pci)
457                 return AST_BRIDGE_FAILED_NOWARN;
458         #endif
459         if (UseNativeBridge != 1) {
460                 return AST_BRIDGE_FAILED_NOWARN;
461         }
462
463 /*
464         ast_mutex_lock(&p0->lock);
465         ast_mutex_lock(&p1->lock);
466 */
467
468         /* Bridge channels, check if we can.  I believe we always can, so find a slot.*/
469
470         ast_mutex_lock(&bridge_lock);
471         for (i = 0; i < max_bridges; i++)
472                 if (!bridges[i].inuse)
473                         break;
474         if (i < max_bridges) {
475                 bridges[i].inuse = 1;
476                 bridges[i].endbridge = 0;
477                 bridges[i].flags = flags;
478                 bridges[i].rc = rc;
479                 bridges[i].fo = fo;
480                 bridges[i].c0 = c0;
481                 bridges[i].c1 = c1;
482         }
483         ast_mutex_unlock(&bridge_lock);
484
485         if (i == max_bridges) {
486                 ast_log(LOG_WARNING, "%s: vpb_bridge: Failed to bridge %s and %s!\n", p0->dev, ast_channel_name(c0), ast_channel_name(c1));
487                 ast_mutex_unlock(&p0->lock);
488                 ast_mutex_unlock(&p1->lock);
489                 return AST_BRIDGE_FAILED_NOWARN;
490         } else {
491                 /* Set bridge pointers. You don't want to take these locks while holding bridge lock.*/
492                 ast_mutex_lock(&p0->lock);
493                 p0->bridge = &bridges[i];
494                 ast_mutex_unlock(&p0->lock);
495
496                 ast_mutex_lock(&p1->lock);
497                 p1->bridge = &bridges[i];
498                 ast_mutex_unlock(&p1->lock);
499
500                 ast_verb(2, "%s: vpb_bridge: Bridging call entered with [%s, %s]\n", p0->dev, ast_channel_name(c0), ast_channel_name(c1));
501         }
502
503         ast_verb(3, "Native bridging %s and %s\n", ast_channel_name(c0), ast_channel_name(c1));
504
505         #ifdef HALF_DUPLEX_BRIDGE
506
507         ast_debug(2, "%s: vpb_bridge: Starting half-duplex bridge [%s, %s]\n", p0->dev, ast_channel_name(c0), ast_channel_name(c1));
508
509         int dir = 0;
510
511         memset(p0->buf, 0, sizeof(p0->buf));
512         memset(p1->buf, 0, sizeof(p1->buf));
513
514         vpb_record_buf_start(p0->handle, VPB_ALAW);
515         vpb_record_buf_start(p1->handle, VPB_ALAW);
516
517         vpb_play_buf_start(p0->handle, VPB_ALAW);
518         vpb_play_buf_start(p1->handle, VPB_ALAW);
519
520         while (!bridges[i].endbridge) {
521                 struct vpb_pvt *from, *to;
522                 if (++dir % 2) {
523                         from = p0;
524                         to = p1;
525                 } else {
526                         from = p1;
527                         to = p0;
528                 }
529                 vpb_record_buf_sync(from->handle, from->buf, VPB_SAMPLES);
530                 vpb_play_buf_sync(to->handle, from->buf, VPB_SAMPLES);
531         }
532
533         vpb_record_buf_finish(p0->handle);
534         vpb_record_buf_finish(p1->handle);
535
536         vpb_play_buf_finish(p0->handle);
537         vpb_play_buf_finish(p1->handle);
538
539         ast_debug(2, "%s: vpb_bridge: Finished half-duplex bridge [%s, %s]\n", p0->dev, ast_channel_name(c0), ast_channel_name(c1));
540
541         res = VPB_OK;
542
543         #else
544
545         res = vpb_bridge(p0->handle, p1->handle, VPB_BRIDGE_ON);
546         if (res == VPB_OK) {
547                 /* pthread_cond_wait(&bridges[i].cond, &bridges[i].lock);*/ /* Wait for condition signal. */
548                 while (!bridges[i].endbridge) {
549                         /* Are we really ment to be doing nothing ?!?! */
550                         who = ast_waitfor_n(cs, 2, &timeoutms);
551                         if (!who) {
552                                 if (!timeoutms) {
553                                         res = AST_BRIDGE_RETRY;
554                                         break;
555                                 }
556                                 ast_debug(1, "%s: vpb_bridge: Empty frame read...\n", p0->dev);
557                                 /* check for hangup / whentohangup */
558                                 if (ast_check_hangup(c0) || ast_check_hangup(c1))
559                                         break;
560                                 continue;
561                         }
562                         f = ast_read(who);
563                         if (!f || ((f->frametype == AST_FRAME_DTMF) &&
564                                            (((who == c0) && (flags & AST_BRIDGE_DTMF_CHANNEL_0)) ||
565                                        ((who == c1) && (flags & AST_BRIDGE_DTMF_CHANNEL_1))))) {
566                                 *fo = f;
567                                 *rc = who;
568                                 ast_debug(1, "%s: vpb_bridge: Got a [%s]\n", p0->dev, f ? "digit" : "hangup");
569 #if 0
570                                 if ((c0->tech_pvt == pvt0) && (!ast_check_hangup(c0))) {
571                                         if (pr0->set_rtp_peer(c0, NULL, NULL, 0))
572                                                 ast_log(LOG_WARNING, "Channel '%s' failed to revert\n", c0->name);
573                                 }
574                                 if ((c1->tech_pvt == pvt1) && (!ast_check_hangup(c1))) {
575                                         if (pr1->set_rtp_peer(c1, NULL, NULL, 0))
576                                                 ast_log(LOG_WARNING, "Channel '%s' failed to revert back\n", c1->name);
577                                 }
578                                 /* That's all we needed */
579                                 return 0;
580 #endif
581                                 /* Check if we need to break */
582                                 if (break_for_dtmf) {
583                                         break;
584                                 } else if ((f->frametype == AST_FRAME_DTMF) && ((f->subclass.integer == '#') || (f->subclass.integer == '*'))) {
585                                         break;
586                                 }
587                         } else {
588                                 if ((f->frametype == AST_FRAME_DTMF) ||
589                                         (f->frametype == AST_FRAME_VOICE) ||
590                                         (f->frametype == AST_FRAME_VIDEO))
591                                         {
592                                         /* Forward voice or DTMF frames if they happen upon us */
593                                         /* Actually I dont think we want to forward on any frames!
594                                         if (who == c0) {
595                                                 ast_write(c1, f);
596                                         } else if (who == c1) {
597                                                 ast_write(c0, f);
598                                         }
599                                         */
600                                 }
601                                 ast_frfree(f);
602                         }
603                         /* Swap priority not that it's a big deal at this point */
604                         cs[2] = cs[0];
605                         cs[0] = cs[1];
606                         cs[1] = cs[2];
607                 };
608                 vpb_bridge(p0->handle, p1->handle, VPB_BRIDGE_OFF);
609         }
610
611         #endif
612
613         ast_mutex_lock(&bridge_lock);
614         bridges[i].inuse = 0;
615         ast_mutex_unlock(&bridge_lock);
616
617         p0->bridge = NULL;
618         p1->bridge = NULL;
619
620
621         ast_verb(2, "Bridging call done with [%s, %s] => %d\n", ast_channel_name(c0), ast_channel_name(c1), res);
622
623 /*
624         ast_mutex_unlock(&p0->lock);
625         ast_mutex_unlock(&p1->lock);
626 */
627         return (res == VPB_OK) ? AST_BRIDGE_COMPLETE : AST_BRIDGE_FAILED;
628 }
629 #endif  /* defined(VPB_NATIVE_BRIDGING) */
630
631 /* Caller ID can be located in different positions between the rings depending on your Telco
632  * Australian (Telstra) callerid starts 700ms after 1st ring and finishes 1.5s after first ring
633  * Use ANALYSE_CID to record rings and determine location of callerid
634  */
635 /* #define ANALYSE_CID */
636 #define RING_SKIP 300
637 #define CID_MSECS 2000
638
639 static void get_callerid(struct vpb_pvt *p)
640 {
641         short buf[CID_MSECS*8]; /* 8kHz sampling rate */
642         struct timeval cid_record_time;
643         int rc;
644         struct ast_channel *owner = p->owner;
645 /*
646         char callerid[AST_MAX_EXTENSION] = "";
647 */
648 #ifdef ANALYSE_CID
649         void * ws;
650         char * file="cidsams.wav";
651 #endif
652
653
654         if (ast_mutex_trylock(&p->record_lock) == 0) {
655
656                 cid_record_time = ast_tvnow();
657                 ast_verb(4, "CID record - start\n");
658
659                 /* Skip any trailing ringtone */
660                 if (UsePolarityCID != 1){
661                         vpb_sleep(RING_SKIP);
662                 }
663
664                 ast_verb(4, "CID record - skipped %lldms trailing ring\n",
665                                  (long long int) ast_tvdiff_ms(ast_tvnow(), cid_record_time));
666                 cid_record_time = ast_tvnow();
667
668                 /* Record bit between the rings which contains the callerid */
669                 vpb_record_buf_start(p->handle, VPB_LINEAR);
670                 rc = vpb_record_buf_sync(p->handle, (char*)buf, sizeof(buf));
671                 vpb_record_buf_finish(p->handle);
672 #ifdef ANALYSE_CID
673                 vpb_wave_open_write(&ws, file, VPB_LINEAR);
674                 vpb_wave_write(ws, (char *)buf, sizeof(buf));
675                 vpb_wave_close_write(ws);
676 #endif
677
678                 ast_verb(4, "CID record - recorded %lldms between rings\n",
679                                  (long long int) ast_tvdiff_ms(ast_tvnow(), cid_record_time));
680
681                 ast_mutex_unlock(&p->record_lock);
682
683                 if (rc != VPB_OK) {
684                         ast_log(LOG_ERROR, "Failed to record caller id sample on %s\n", p->dev);
685                         return;
686                 }
687
688                 VPB_CID *cli_struct = new VPB_CID;
689                 cli_struct->ra_cldn[0] = 0;
690                 cli_struct->ra_cn[0] = 0;
691                 /* This decodes FSK 1200baud type callerid */
692                 if ((rc = vpb_cid_decode2(cli_struct, buf, CID_MSECS * 8)) == VPB_OK ) {
693                         /*
694                         if (owner->cid.cid_num)
695                                 ast_free(owner->cid.cid_num);
696                         owner->cid.cid_num=NULL;
697                         if (owner->cid.cid_name)
698                                 ast_free(owner->cid.cid_name);
699                         owner->cid.cid_name=NULL;
700                         */
701
702                         if (cli_struct->ra_cldn[0] == '\0') {
703                                 /*
704                                 owner->cid.cid_num = ast_strdup(cli_struct->cldn);
705                                 owner->cid.cid_name = ast_strdup(cli_struct->cn);
706                                 */
707                                 if (owner) {
708                                         ast_set_callerid(owner, cli_struct->cldn, cli_struct->cn, cli_struct->cldn);
709                                 } else {
710                                         strcpy(p->cid_num, cli_struct->cldn);
711                                         strcpy(p->cid_name, cli_struct->cn);
712                                 }
713                                 ast_verb(4, "CID record - got [%s] [%s]\n",
714                                         S_COR(ast_channel_caller(owner)->id.number.valid, ast_channel_caller(owner)->id.number.str, ""),
715                                         S_COR(ast_channel_caller(owner)->id.name.valid, ast_channel_caller(owner)->id.name.str, ""));
716                                 snprintf(p->callerid, sizeof(p->callerid), "%s %s", cli_struct->cldn, cli_struct->cn);
717                         } else {
718                                 ast_log(LOG_ERROR, "CID record - No caller id avalable on %s \n", p->dev);
719                         }
720
721                 } else {
722                         ast_log(LOG_ERROR, "CID record - Failed to decode caller id on %s - %d\n", p->dev, rc);
723                         ast_copy_string(p->callerid, "unknown", sizeof(p->callerid));
724                 }
725                 delete cli_struct;
726
727         } else
728                 ast_log(LOG_ERROR, "CID record - Failed to set record mode for caller id on %s\n", p->dev);
729 }
730
731 static void get_callerid_ast(struct vpb_pvt *p)
732 {
733         struct callerid_state *cs;
734         char buf[1024];
735         char *name = NULL, *number = NULL;
736         int flags;
737         int rc = 0, vrc;
738         int sam_count = 0;
739         struct ast_channel *owner = p->owner;
740         int which_cid;
741 /*
742         float old_gain;
743 */
744 #ifdef ANALYSE_CID
745         void * ws;
746         char * file = "cidsams.wav";
747 #endif
748
749         if (p->callerid_type == 1) {
750                 ast_verb(4, "Collected caller ID already\n");
751                 return;
752         }
753         else if (p->callerid_type == 2 ) {
754                 which_cid = CID_SIG_V23;
755                 ast_verb(4, "Collecting Caller ID v23...\n");
756         }
757         else if (p->callerid_type == 3) {
758                 which_cid = CID_SIG_BELL;
759                 ast_verb(4, "Collecting Caller ID bell...\n");
760         } else {
761                 ast_verb(4, "Caller ID disabled\n");
762                 return;
763         }
764 /*      vpb_sleep(RING_SKIP); */
765 /*      vpb_record_get_gain(p->handle, &old_gain); */
766         cs = callerid_new(which_cid);
767         if (cs) {
768 #ifdef ANALYSE_CID
769                 vpb_wave_open_write(&ws, file, VPB_MULAW);
770                 vpb_record_set_gain(p->handle, 3.0);
771                 vpb_record_set_hw_gain(p->handle, 12.0);
772 #endif
773                 vpb_record_buf_start(p->handle, VPB_MULAW);
774                 while ((rc == 0) && (sam_count < 8000 * 3)) {
775                         vrc = vpb_record_buf_sync(p->handle, (char*)buf, sizeof(buf));
776                         if (vrc != VPB_OK)
777                                 ast_log(LOG_ERROR, "%s: Caller ID couldn't read audio buffer!\n", p->dev);
778                         rc = callerid_feed(cs, (unsigned char *)buf, sizeof(buf), ast_format_ulaw);
779 #ifdef ANALYSE_CID
780                         vpb_wave_write(ws, (char *)buf, sizeof(buf));
781 #endif
782                         sam_count += sizeof(buf);
783                         ast_verb(4, "Collecting Caller ID samples [%d][%d]...\n", sam_count, rc);
784                 }
785                 vpb_record_buf_finish(p->handle);
786 #ifdef ANALYSE_CID
787                 vpb_wave_close_write(ws);
788 #endif
789                 if (rc == 1) {
790                         callerid_get(cs, &name, &number, &flags);
791                         ast_debug(1, "%s: Caller ID name [%s] number [%s] flags [%d]\n", p->dev, name, number, flags);
792                 } else {
793                         ast_log(LOG_ERROR, "%s: Failed to decode Caller ID \n", p->dev);
794                 }
795 /*              vpb_record_set_gain(p->handle, old_gain); */
796 /*              vpb_record_set_hw_gain(p->handle,6.0); */
797         } else {
798                 ast_log(LOG_ERROR, "%s: Failed to create Caller ID struct\n", p->dev);
799         }
800         ast_party_number_free(&ast_channel_caller(owner)->id.number);
801         ast_party_number_init(&ast_channel_caller(owner)->id.number);
802         ast_party_name_free(&ast_channel_caller(owner)->id.name);
803         ast_party_name_init(&ast_channel_caller(owner)->id.name);
804         if (number)
805                 ast_shrink_phone_number(number);
806         ast_set_callerid(owner,
807                 number, name,
808                 ast_channel_caller(owner)->ani.number.valid ? NULL : number);
809         if (!ast_strlen_zero(name)){
810                 snprintf(p->callerid, sizeof(p->callerid), "%s %s", number, name);
811         } else {
812                 ast_copy_string(p->callerid, number, sizeof(p->callerid));
813         }
814         if (cs)
815                 callerid_free(cs);
816 }
817
818 /* Terminate any tones we are presently playing */
819 static void stoptone(int handle)
820 {
821         int ret;
822         VPB_EVENT je;
823         while (vpb_playtone_state(handle) != VPB_OK) {
824                 vpb_tone_terminate(handle);
825                 ret = vpb_get_event_ch_async(handle, &je);
826                 if ((ret == VPB_OK) && (je.type != VPB_DIALEND)) {
827                         ast_verb(4, "Stop tone collected a wrong event!![%d]\n", je.type);
828 /*                      vpb_put_event(&je); */
829                 }
830                 vpb_sleep(10);
831         }
832 }
833
834 /* Safe vpb_playtone_async */
835 static int playtone( int handle, VPB_TONE *tone)
836 {
837         int ret = VPB_OK;
838         stoptone(handle);
839         ast_verb(4, "[%02d]: Playing tone\n", handle);
840         ret = vpb_playtone_async(handle, tone);
841         return ret;
842 }
843
844 static inline int monitor_handle_owned(struct vpb_pvt *p, VPB_EVENT *e)
845 {
846         struct ast_frame f = {AST_FRAME_CONTROL}; /* default is control, Clear rest. */
847         int endbridge = 0;
848
849         ast_verb(4, "%s: handle_owned: got event: [%d=>%d]\n", p->dev, e->type, e->data);
850
851         f.src = "vpb";
852         switch (e->type) {
853         case VPB_RING:
854                 if (p->mode == MODE_FXO) {
855                         f.subclass.integer = AST_CONTROL_RING;
856                         vpb_timer_stop(p->ring_timer);
857                         vpb_timer_start(p->ring_timer);
858                 } else
859                         f.frametype = AST_FRAME_NULL; /* ignore ring on station port. */
860                 break;
861
862         case VPB_RING_OFF:
863                 f.frametype = AST_FRAME_NULL;
864                 break;
865
866         case VPB_TIMEREXP:
867                 if (e->data == p->busy_timer_id) {
868                         playtone(p->handle, &Busytone);
869                         p->state = VPB_STATE_PLAYBUSY;
870                         vpb_timer_stop(p->busy_timer);
871                         vpb_timer_start(p->busy_timer);
872                         f.frametype = AST_FRAME_NULL;
873                 } else if (e->data == p->ringback_timer_id) {
874                         playtone(p->handle, &Ringbacktone);
875                         vpb_timer_stop(p->ringback_timer);
876                         vpb_timer_start(p->ringback_timer);
877                         f.frametype = AST_FRAME_NULL;
878                 } else if (e->data == p->ring_timer_id) {
879                         /* We didnt get another ring in time! */
880                         if (ast_channel_state(p->owner) != AST_STATE_UP)  {
881                                  /* Assume caller has hung up */
882                                 vpb_timer_stop(p->ring_timer);
883                                 f.subclass.integer = AST_CONTROL_HANGUP;
884                         } else {
885                                 vpb_timer_stop(p->ring_timer);
886                                 f.frametype = AST_FRAME_NULL;
887                         }
888
889                 } else {
890                                 f.frametype = AST_FRAME_NULL; /* Ignore. */
891                 }
892                 break;
893
894         case VPB_DTMF_DOWN:
895         case VPB_DTMF:
896                 if (use_ast_dtmfdet) {
897                         f.frametype = AST_FRAME_NULL;
898                 } else if (ast_channel_state(p->owner) == AST_STATE_UP) {
899                         f.frametype = AST_FRAME_DTMF;
900                         f.subclass.integer = e->data;
901                 } else
902                         f.frametype = AST_FRAME_NULL;
903                 break;
904
905         case VPB_TONEDETECT:
906                 if (e->data == VPB_BUSY || e->data == VPB_BUSY_308 || e->data == VPB_BUSY_AUST ) {
907                         ast_debug(4, "%s: handle_owned: got event: BUSY\n", p->dev);
908                         if (ast_channel_state(p->owner) == AST_STATE_UP) {
909                                 f.subclass.integer = AST_CONTROL_HANGUP;
910                         } else {
911                                 f.subclass.integer = AST_CONTROL_BUSY;
912                         }
913                 } else if (e->data == VPB_FAX) {
914                         if (!p->faxhandled) {
915                                 if (strcmp(ast_channel_exten(p->owner), "fax")) {
916                                         const char *target_context = S_OR(ast_channel_macrocontext(p->owner), ast_channel_context(p->owner));
917
918                                         if (ast_exists_extension(p->owner, target_context, "fax", 1,
919                                                 S_COR(ast_channel_caller(p->owner)->id.number.valid, ast_channel_caller(p->owner)->id.number.str, NULL))) {
920                                                 ast_verb(3, "Redirecting %s to fax extension\n", ast_channel_name(p->owner));
921                                                 /* Save the DID/DNIS when we transfer the fax call to a "fax" extension */
922                                                 pbx_builtin_setvar_helper(p->owner, "FAXEXTEN", ast_channel_exten(p->owner));
923                                                 if (ast_async_goto(p->owner, target_context, "fax", 1)) {
924                                                         ast_log(LOG_WARNING, "Failed to async goto '%s' into fax of '%s'\n", ast_channel_name(p->owner), target_context);
925                                                 }
926                                         } else {
927                                                 ast_log(LOG_NOTICE, "Fax detected, but no fax extension\n");
928                                         }
929                                 } else {
930                                         ast_debug(1, "Already in a fax extension, not redirecting\n");
931                                 }
932                         } else {
933                                 ast_debug(1, "Fax already handled\n");
934                         }
935                 } else if (e->data == VPB_GRUNT) {
936                         if (ast_tvdiff_ms(ast_tvnow(), p->lastgrunt) > gruntdetect_timeout) {
937                                 /* Nothing heard on line for a very long time
938                                  * Timeout connection */
939                                 ast_verb(3, "grunt timeout\n");
940                                 ast_log(LOG_NOTICE, "%s: Line hangup due of lack of conversation\n", p->dev);
941                                 f.subclass.integer = AST_CONTROL_HANGUP;
942                         } else {
943                                 p->lastgrunt = ast_tvnow();
944                                 f.frametype = AST_FRAME_NULL;
945                         }
946                 } else {
947                         f.frametype = AST_FRAME_NULL;
948                 }
949                 break;
950
951         case VPB_CALLEND:
952                 #ifdef DIAL_WITH_CALL_PROGRESS
953                 if (e->data == VPB_CALL_CONNECTED) {
954                         f.subclass.integer = AST_CONTROL_ANSWER;
955                 } else if (e->data == VPB_CALL_NO_DIAL_TONE || e->data == VPB_CALL_NO_RING_BACK) {
956                         f.subclass.integer =  AST_CONTROL_CONGESTION;
957                 } else if (e->data == VPB_CALL_NO_ANSWER || e->data == VPB_CALL_BUSY) {
958                         f.subclass.integer = AST_CONTROL_BUSY;
959                 } else if (e->data  == VPB_CALL_DISCONNECTED) {
960                         f.subclass.integer = AST_CONTROL_HANGUP;
961                 }
962                 #else
963                 ast_log(LOG_NOTICE, "%s: Got call progress callback but blind dialing \n", p->dev);
964                 f.frametype = AST_FRAME_NULL;
965                 #endif
966                 break;
967
968         case VPB_STATION_OFFHOOK:
969                 f.subclass.integer = AST_CONTROL_ANSWER;
970                 break;
971
972         case VPB_DROP:
973                 if ((p->mode == MODE_FXO) && (UseLoopDrop)) { /* ignore loop drop on stations */
974                         if (ast_channel_state(p->owner) == AST_STATE_UP) {
975                                 f.subclass.integer = AST_CONTROL_HANGUP;
976                         } else {
977                                 f.frametype = AST_FRAME_NULL;
978                         }
979                 }
980                 break;
981         case VPB_LOOP_ONHOOK:
982                 if (ast_channel_state(p->owner) == AST_STATE_UP) {
983                         f.subclass.integer = AST_CONTROL_HANGUP;
984                 } else {
985                         f.frametype = AST_FRAME_NULL;
986                 }
987                 break;
988         case VPB_STATION_ONHOOK:
989                 f.subclass.integer = AST_CONTROL_HANGUP;
990                 break;
991
992         case VPB_STATION_FLASH:
993                 f.subclass.integer = AST_CONTROL_FLASH;
994                 break;
995
996         /* Called when dialing has finished and ringing starts
997          * No indication that call has really been answered when using blind dialing
998          */
999         case VPB_DIALEND:
1000                 if (p->state < 5) {
1001                         f.subclass.integer = AST_CONTROL_ANSWER;
1002                         ast_verb(2, "%s: Dialend\n", p->dev);
1003                 } else {
1004                         f.frametype = AST_FRAME_NULL;
1005                 }
1006                 break;
1007
1008 /*      case VPB_PLAY_UNDERFLOW:
1009                 f.frametype = AST_FRAME_NULL;
1010                 vpb_reset_play_fifo_alarm(p->handle);
1011                 break;
1012
1013         case VPB_RECORD_OVERFLOW:
1014                 f.frametype = AST_FRAME_NULL;
1015                 vpb_reset_record_fifo_alarm(p->handle);
1016                 break;
1017 */
1018         default:
1019                 f.frametype = AST_FRAME_NULL;
1020                 break;
1021         }
1022
1023 /*
1024         ast_verb(4, "%s: LOCKING in handle_owned [%d]\n", p->dev,res);
1025         res = ast_mutex_lock(&p->lock);
1026         ast_verb(4, "%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1027 */
1028         if (p->bridge) { /* Check what happened, see if we need to report it. */
1029                 switch (f.frametype) {
1030                 case AST_FRAME_DTMF:
1031                         if (    !(p->bridge->c0 == p->owner &&
1032                                         (p->bridge->flags & AST_BRIDGE_DTMF_CHANNEL_0) ) &&
1033                                         !(p->bridge->c1 == p->owner &&
1034                                         (p->bridge->flags & AST_BRIDGE_DTMF_CHANNEL_1) )) {
1035                                 /* Kill bridge, this is interesting. */
1036                                 endbridge = 1;
1037                         }
1038                         break;
1039
1040                 case AST_FRAME_CONTROL:
1041                         endbridge = 1;
1042                         break;
1043
1044                 default:
1045                         break;
1046                 }
1047
1048                 if (endbridge) {
1049                         if (p->bridge->fo) {
1050                                 *p->bridge->fo = ast_frisolate(&f);
1051                         }
1052
1053                         if (p->bridge->rc) {
1054                                 *p->bridge->rc = p->owner;
1055                         }
1056
1057                         ast_mutex_lock(&p->bridge->lock);
1058                         p->bridge->endbridge = 1;
1059                         ast_cond_signal(&p->bridge->cond);
1060                         ast_mutex_unlock(&p->bridge->lock);
1061                 }
1062         }
1063
1064         if (endbridge) {
1065                 ast_mutex_unlock(&p->lock);
1066 /*
1067                 ast_verb(4, "%s: unLOCKING in handle_owned [%d]\n", p->dev,res);
1068 */
1069                 return 0;
1070         }
1071
1072         ast_verb(4, "%s: handle_owned: Prepared frame type[%d]subclass[%d], bridge=%p owner=[%s]\n",
1073                         p->dev, f.frametype, f.subclass.integer, (void *)p->bridge, ast_channel_name(p->owner));
1074
1075         /* Trylock used here to avoid deadlock that can occur if we
1076          * happen to be in here handling an event when hangup is called
1077          * Problem is that hangup holds p->owner->lock
1078          */
1079         if ((f.frametype >= 0) && (f.frametype != AST_FRAME_NULL) && (p->owner)) {
1080                 if (ast_channel_trylock(p->owner) == 0) {
1081                         ast_queue_frame(p->owner, &f);
1082                         ast_channel_unlock(p->owner);
1083                         ast_verb(4, "%s: handled_owned: Queued Frame to [%s]\n", p->dev, ast_channel_name(p->owner));
1084                 } else {
1085                         ast_verbose("%s: handled_owned: Missed event %d/%d \n",
1086                                 p->dev, f.frametype, f.subclass.integer);
1087                 }
1088         }
1089         ast_mutex_unlock(&p->lock);
1090 /*
1091         ast_verb(4, "%s: unLOCKING in handle_owned [%d]\n", p->dev,res);
1092 */
1093
1094         return 0;
1095 }
1096
1097 static inline int monitor_handle_notowned(struct vpb_pvt *p, VPB_EVENT *e)
1098 {
1099         char s[2] = {0};
1100         struct ast_channel *owner = p->owner;
1101         char cid_num[256];
1102         char cid_name[256];
1103 /*
1104         struct ast_channel *c;
1105 */
1106
1107         char str[VPB_MAX_STR];
1108
1109         vpb_translate_event(e, str);
1110         ast_verb(4, "%s: handle_notowned: mode=%d, event[%d][%s]=[%d]\n", p->dev, p->mode, e->type,str, e->data);
1111
1112         switch (e->type) {
1113         case VPB_LOOP_ONHOOK:
1114         case VPB_LOOP_POLARITY:
1115                 if (UsePolarityCID == 1) {
1116                         ast_verb(4, "Polarity reversal\n");
1117                         if (p->callerid_type == 1) {
1118                                 ast_verb(4, "Using VPB Caller ID\n");
1119                                 get_callerid(p);        /* UK CID before 1st ring*/
1120                         }
1121 /*                      get_callerid_ast(p); */   /* Caller ID using the ast functions */
1122                 }
1123                 break;
1124         case VPB_RING:
1125                 if (p->mode == MODE_FXO) /* FXO port ring, start * */ {
1126                         vpb_new(p, AST_STATE_RING, p->context, NULL, NULL);
1127                         if (UsePolarityCID != 1) {
1128                                 if (p->callerid_type == 1) {
1129                                         ast_verb(4, "Using VPB Caller ID\n");
1130                                         get_callerid(p);        /* Australian CID only between 1st and 2nd ring  */
1131                                 }
1132                                 get_callerid_ast(p);    /* Caller ID using the ast functions */
1133                         } else {
1134                                 ast_log(LOG_ERROR, "Setting caller ID: %s %s\n", p->cid_num, p->cid_name);
1135                                 ast_set_callerid(p->owner, p->cid_num, p->cid_name, p->cid_num);
1136                                 p->cid_num[0] = 0;
1137                                 p->cid_name[0] = 0;
1138                         }
1139
1140                         vpb_timer_stop(p->ring_timer);
1141                         vpb_timer_start(p->ring_timer);
1142                 }
1143                 break;
1144
1145         case VPB_RING_OFF:
1146                 break;
1147
1148         case VPB_STATION_OFFHOOK:
1149                 if (p->mode == MODE_IMMEDIATE) {
1150                         vpb_new(p,AST_STATE_RING, p->context, NULL, NULL);
1151                 } else {
1152                         ast_verb(4, "%s: handle_notowned: playing dialtone\n", p->dev);
1153                         playtone(p->handle, &Dialtone);
1154                         p->state = VPB_STATE_PLAYDIAL;
1155                         p->wantdtmf = 1;
1156                         p->ext[0] = 0;  /* Just to be sure & paranoid.*/
1157                 }
1158                 break;
1159
1160         case VPB_DIALEND:
1161                 if (p->mode == MODE_DIALTONE) {
1162                         if (p->state == VPB_STATE_PLAYDIAL) {
1163                                 playtone(p->handle, &Dialtone);
1164                                 p->wantdtmf = 1;
1165                                 p->ext[0] = 0;  /* Just to be sure & paranoid. */
1166                         }
1167 #if 0
1168                         /* These are not needed as they have timers to restart them */
1169                         else if (p->state == VPB_STATE_PLAYBUSY) {
1170                                 playtone(p->handle, &Busytone);
1171                                 p->wantdtmf = 1;
1172                                 p->ext[0] = 0;
1173                         } else if (p->state == VPB_STATE_PLAYRING) {
1174                                 playtone(p->handle, &Ringbacktone);
1175                                 p->wantdtmf = 1;
1176                                 p->ext[0] = 0;
1177                         }
1178 #endif
1179                 } else {
1180                         ast_verb(4, "%s: handle_notowned: Got a DIALEND when not really expected\n",p->dev);
1181                 }
1182                 break;
1183
1184         case VPB_STATION_ONHOOK:        /* clear ext */
1185                 stoptone(p->handle);
1186                 p->wantdtmf = 1 ;
1187                 p->ext[0] = 0;
1188                 p->state = VPB_STATE_ONHOOK;
1189                 break;
1190         case VPB_TIMEREXP:
1191                 if (e->data == p->dtmfidd_timer_id) {
1192                         if (ast_exists_extension(NULL, p->context, p->ext, 1, p->callerid)){
1193                                 ast_verb(4, "%s: handle_notowned: DTMF IDD timer out, matching on [%s] in [%s]\n", p->dev, p->ext, p->context);
1194
1195                                 vpb_new(p, AST_STATE_RING, p->context, NULL, NULL);
1196                         }
1197                 } else if (e->data == p->ring_timer_id) {
1198                         /* We didnt get another ring in time! */
1199                         if (p->owner) {
1200                                 if (ast_channel_state(p->owner) != AST_STATE_UP) {
1201                                          /* Assume caller has hung up */
1202                                         vpb_timer_stop(p->ring_timer);
1203                                 }
1204                         } else {
1205                                  /* No owner any more, Assume caller has hung up */
1206                                 vpb_timer_stop(p->ring_timer);
1207                         }
1208                 }
1209                 break;
1210
1211         case VPB_DTMF:
1212                 if (p->state == VPB_STATE_ONHOOK){
1213                         /* DTMF's being passed while on-hook maybe Caller ID */
1214                         if (p->mode == MODE_FXO) {
1215                                 if (e->data == DTMF_CID_START) { /* CallerID Start signal */
1216                                         p->dtmf_caller_pos = 0; /* Leaves the first digit out */
1217                                         memset(p->callerid, 0, sizeof(p->callerid));
1218                                 } else if (e->data == DTMF_CID_STOP) { /* CallerID End signal */
1219                                         p->callerid[p->dtmf_caller_pos] = '\0';
1220                                         ast_verb(3, " %s: DTMF CallerID %s\n", p->dev, p->callerid);
1221                                         if (owner) {
1222                                                 /*
1223                                                 if (owner->cid.cid_num)
1224                                                         ast_free(owner->cid.cid_num);
1225                                                 owner->cid.cid_num=NULL;
1226                                                 if (owner->cid.cid_name)
1227                                                         ast_free(owner->cid.cid_name);
1228                                                 owner->cid.cid_name=NULL;
1229                                                 owner->cid.cid_num = strdup(p->callerid);
1230                                                 */
1231                                                 cid_name[0] = '\0';
1232                                                 cid_num[0] = '\0';
1233                                                 ast_callerid_split(p->callerid, cid_name, sizeof(cid_name), cid_num, sizeof(cid_num));
1234                                                 ast_set_callerid(owner, cid_num, cid_name, cid_num);
1235
1236                                         } else {
1237                                                 ast_verb(3, " %s: DTMF CallerID: no owner to assign CID \n", p->dev);
1238                                         }
1239                                 } else if (p->dtmf_caller_pos < AST_MAX_EXTENSION) {
1240                                         if (p->dtmf_caller_pos >= 0) {
1241                                                 p->callerid[p->dtmf_caller_pos] = e->data;
1242                                         }
1243                                         p->dtmf_caller_pos++;
1244                                 }
1245                         }
1246                         break;
1247                 }
1248                 if (p->wantdtmf == 1) {
1249                         stoptone(p->handle);
1250                         p->wantdtmf = 0;
1251                 }
1252                 p->state = VPB_STATE_GETDTMF;
1253                 s[0] = e->data;
1254                 strncat(p->ext, s, sizeof(p->ext) - strlen(p->ext) - 1);
1255                 #if 0
1256                 if (!strcmp(p->ext, ast_pickup_ext())) {
1257                         /* Call pickup has been dialled! */
1258                         if (ast_pickup_call(c)) {
1259                                 /* Call pickup wasnt possible */
1260                         }
1261                 } else
1262                 #endif
1263                 if (ast_exists_extension(NULL, p->context, p->ext, 1, p->callerid)) {
1264                         if (ast_canmatch_extension(NULL, p->context, p->ext, 1, p->callerid)) {
1265                                 ast_verb(4, "%s: handle_notowned: Multiple matches on [%s] in [%s]\n", p->dev, p->ext, p->context);
1266                                 /* Start DTMF IDD timer */
1267                                 vpb_timer_stop(p->dtmfidd_timer);
1268                                 vpb_timer_start(p->dtmfidd_timer);
1269                         } else {
1270                                 ast_verb(4, "%s: handle_notowned: Matched on [%s] in [%s]\n", p->dev, p->ext , p->context);
1271                                 vpb_new(p, AST_STATE_UP, p->context, NULL, NULL);
1272                         }
1273                 } else if (!ast_canmatch_extension(NULL, p->context, p->ext, 1, p->callerid)) {
1274                         if (ast_exists_extension(NULL, "default", p->ext, 1, p->callerid)) {
1275                                 vpb_new(p, AST_STATE_UP, "default", NULL, NULL);
1276                         } else if (!ast_canmatch_extension(NULL, "default", p->ext, 1, p->callerid)) {
1277                                 ast_verb(4, "%s: handle_notowned: can't match anything in %s or default\n", p->dev, p->context);
1278                                 playtone(p->handle, &Busytone);
1279                                 vpb_timer_stop(p->busy_timer);
1280                                 vpb_timer_start(p->busy_timer);
1281                                 p->state = VPB_STATE_PLAYBUSY;
1282                         }
1283                 }
1284                 break;
1285
1286         default:
1287                 /* Ignore.*/
1288                 break;
1289         }
1290
1291         ast_verb(4, "%s: handle_notowned: mode=%d, [%d=>%d]\n", p->dev, p->mode, e->type, e->data);
1292
1293         return 0;
1294 }
1295
1296 static void *do_monitor(void *unused)
1297 {
1298
1299         /* Monitor thread, doesn't die until explicitly killed. */
1300
1301         ast_verb(2, "Starting vpb monitor thread[%ld]\n", pthread_self());
1302
1303         pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
1304
1305         for (;;) {
1306                 VPB_EVENT e;
1307                 VPB_EVENT je;
1308                 char str[VPB_MAX_STR];
1309                 struct vpb_pvt *p;
1310
1311                 /*
1312                 ast_verb(4, "Monitor waiting for event\n");
1313                 */
1314
1315                 int res = vpb_get_event_sync(&e, VPB_WAIT_TIMEOUT);
1316                 if ((res == VPB_NO_EVENTS) || (res == VPB_TIME_OUT)) {
1317                         /*
1318                         if (res == VPB_NO_EVENTS) {
1319                                 ast_verb(4, "No events....\n");
1320                         } else {
1321                                 ast_verb(4, "No events, timed out....\n");
1322                         }
1323                         */
1324                         continue;
1325                 }
1326
1327                 if (res != VPB_OK) {
1328                         ast_log(LOG_ERROR,"Monitor get event error %d\n", res );
1329                         ast_verbose("Monitor get event error %d\n", res );
1330                         continue;
1331                 }
1332
1333                 str[0] = 0;
1334
1335                 p = NULL;
1336
1337                 ast_mutex_lock(&monlock);
1338                 if (e.type == VPB_NULL_EVENT) {
1339                         ast_verb(4, "Monitor got null event\n");
1340                 } else {
1341                         vpb_translate_event(&e, str);
1342                         if (*str && *(str + 1)) {
1343                                 str[strlen(str) - 1] = '\0';
1344                         }
1345
1346                         ast_mutex_lock(&iflock);
1347                         for (p = iflist; p && p->handle != e.handle; p = p->next);
1348                         ast_mutex_unlock(&iflock);
1349
1350                         if (p) {
1351                                 ast_verb(4, "%s: Event [%d=>%s]\n",
1352                                         p ? p->dev : "null", e.type, str);
1353                         }
1354                 }
1355
1356                 ast_mutex_unlock(&monlock);
1357
1358                 if (!p) {
1359                         if (e.type != VPB_NULL_EVENT) {
1360                                 ast_log(LOG_WARNING, "Got event [%s][%d], no matching iface!\n", str, e.type);
1361                                 ast_verb(4, "vpb/ERR: No interface for Event [%d=>%s] \n", e.type, str);
1362                         }
1363                         continue;
1364                 }
1365
1366                 /* flush the event from the channel event Q */
1367                 vpb_get_event_ch_async(e.handle, &je);
1368                 vpb_translate_event(&je, str);
1369                 ast_verb(5, "%s: Flushing event [%d]=>%s\n", p->dev, je.type, str);
1370
1371                 /* Check for ownership and locks */
1372                 if ((p->owner) && (!p->golock)) {
1373                         /* Need to get owner lock */
1374                         /* Safely grab both p->lock and p->owner->lock so that there
1375                         cannot be a race with something from the other side */
1376                         /*
1377                         ast_mutex_lock(&p->lock);
1378                         while (ast_mutex_trylock(&p->owner->lock)) {
1379                                 ast_mutex_unlock(&p->lock);
1380                                 usleep(1);
1381                                 ast_mutex_lock(&p->lock);
1382                                 if (!p->owner)
1383                                         break;
1384                         }
1385                         if (p->owner)
1386                                 p->golock = 1;
1387                         */
1388                 }
1389                 /* Two scenarios: Are you owned or not. */
1390                 if (p->owner) {
1391                         monitor_handle_owned(p, &e);
1392                 } else {
1393                         monitor_handle_notowned(p, &e);
1394                 }
1395                 /* if ((!p->owner)&&(p->golock)) {
1396                         ast_mutex_unlock(&p->owner->lock);
1397                         ast_mutex_unlock(&p->lock);
1398                 }
1399                 */
1400
1401         }
1402
1403         return NULL;
1404 }
1405
1406 static int restart_monitor(void)
1407 {
1408         int error = 0;
1409
1410         /* If we're supposed to be stopped -- stay stopped */
1411         if (mthreadactive == -2)
1412                 return 0;
1413
1414         ast_verb(4, "Restarting monitor\n");
1415
1416         ast_mutex_lock(&monlock);
1417         if (monitor_thread == pthread_self()) {
1418                 ast_log(LOG_WARNING, "Cannot kill myself\n");
1419                 error = -1;
1420                 ast_verb(4, "Monitor trying to kill monitor\n");
1421         } else {
1422                 if (mthreadactive != -1) {
1423                         /* Why do other drivers kill the thread? No need says I, simply awake thread with event. */
1424                         VPB_EVENT e;
1425                         e.handle = 0;
1426                         e.type = VPB_EVT_NONE;
1427                         e.data = 0;
1428
1429                         ast_verb(4, "Trying to reawake monitor\n");
1430
1431                         vpb_put_event(&e);
1432                 } else {
1433                         /* Start a new monitor */
1434                         int pid = ast_pthread_create(&monitor_thread, NULL, do_monitor, NULL);
1435                         ast_verb(4, "Created new monitor thread %d\n", pid);
1436                         if (pid < 0) {
1437                                 ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
1438                                 error = -1;
1439                         } else {
1440                                 mthreadactive = 0; /* Started the thread!*/
1441                         }
1442                 }
1443         }
1444         ast_mutex_unlock(&monlock);
1445
1446         ast_verb(4, "Monitor restarted\n");
1447
1448         return error;
1449 }
1450
1451 /* Per board config that must be called after vpb_open() */
1452 static void mkbrd(vpb_model_t model, int echo_cancel)
1453 {
1454         if (!bridges) {
1455                 if (model == vpb_model_v4pci) {
1456                         max_bridges = MAX_BRIDGES_V4PCI;
1457                 }
1458                 bridges = (vpb_bridge_t *)ast_calloc(1, max_bridges * sizeof(vpb_bridge_t));
1459                 if (!bridges) {
1460                         ast_log(LOG_ERROR, "Failed to initialize bridges\n");
1461                 } else {
1462                         int i;
1463                         for (i = 0; i < max_bridges; i++) {
1464                                 ast_mutex_init(&bridges[i].lock);
1465                                 ast_cond_init(&bridges[i].cond, NULL);
1466                         }
1467                 }
1468         }
1469         if (!echo_cancel) {
1470                 if (model == vpb_model_v4pci) {
1471                         vpb_echo_canc_disable();
1472                         ast_log(LOG_NOTICE, "Voicetronix echo cancellation OFF\n");
1473                 } else {
1474                         /* need to do it port by port for OpenSwitch */
1475                 }
1476         } else {
1477                 if (model == vpb_model_v4pci) {
1478                         vpb_echo_canc_enable();
1479                         ast_log(LOG_NOTICE, "Voicetronix echo cancellation ON\n");
1480                         if (ec_supp_threshold > -1) {
1481                                 vpb_echo_canc_set_sup_thresh(0, &ec_supp_threshold);
1482                                 ast_log(LOG_NOTICE, "Voicetronix EC Sup Thres set\n");
1483                         }
1484                 } else {
1485                         /* need to do it port by port for OpenSwitch */
1486                 }
1487         }
1488 }
1489
1490 static struct vpb_pvt *mkif(int board, int channel, int mode, int gains, float txgain, float rxgain,
1491                          float txswgain, float rxswgain, int bal1, int bal2, int bal3,
1492                          char * callerid, int echo_cancel, int group, ast_group_t callgroup, ast_group_t pickupgroup )
1493 {
1494         struct vpb_pvt *tmp;
1495         char buf[64];
1496
1497         tmp = (vpb_pvt *)ast_calloc(1, sizeof(*tmp));
1498
1499         if (!tmp)
1500                 return NULL;
1501
1502         tmp->handle = vpb_open(board, channel);
1503
1504         if (tmp->handle < 0) {
1505                 ast_log(LOG_WARNING, "Unable to create channel vpb/%d-%d: %s\n",
1506                                         board, channel, strerror(errno));
1507                 ast_free(tmp);
1508                 return NULL;
1509         }
1510
1511         snprintf(tmp->dev, sizeof(tmp->dev), "vpb/%d-%d", board, channel);
1512
1513         tmp->mode = mode;
1514
1515         tmp->group = group;
1516         tmp->callgroup = callgroup;
1517         tmp->pickupgroup = pickupgroup;
1518
1519         /* Initialize dtmf caller ID position variable */
1520         tmp->dtmf_caller_pos = 0;
1521
1522         ast_copy_string(tmp->language, language, sizeof(tmp->language));
1523         ast_copy_string(tmp->context, context, sizeof(tmp->context));
1524
1525         tmp->callerid_type = 0;
1526         if (callerid) {
1527                 if (strcasecmp(callerid, "on") == 0) {
1528                         tmp->callerid_type = 1;
1529                         ast_copy_string(tmp->callerid, "unknown", sizeof(tmp->callerid));
1530                 } else if (strcasecmp(callerid, "v23") == 0) {
1531                         tmp->callerid_type = 2;
1532                         ast_copy_string(tmp->callerid, "unknown", sizeof(tmp->callerid));
1533                 } else if (strcasecmp(callerid, "bell") == 0) {
1534                         tmp->callerid_type = 3;
1535                         ast_copy_string(tmp->callerid, "unknown", sizeof(tmp->callerid));
1536                 } else {
1537                         ast_copy_string(tmp->callerid, callerid, sizeof(tmp->callerid));
1538                 }
1539         } else {
1540                 ast_copy_string(tmp->callerid, "unknown", sizeof(tmp->callerid));
1541         }
1542
1543         /* check if codec balances have been set in the config file */
1544         if (bal3 >= 0) {
1545                 if ((bal1>=0) && !(bal1 & 32)) bal1 |= 32;
1546                         vpb_set_codec_reg(tmp->handle, 0x42, bal3);
1547         }
1548         if (bal1 >= 0) {
1549                 vpb_set_codec_reg(tmp->handle, 0x32, bal1);
1550         }
1551         if (bal2 >= 0) {
1552                 vpb_set_codec_reg(tmp->handle, 0x3a, bal2);
1553         }
1554
1555         if (gains & VPB_GOT_TXHWG) {
1556                 if (txgain > MAX_VPB_GAIN) {
1557                         tmp->txgain = MAX_VPB_GAIN;
1558                 } else if (txgain < MIN_VPB_GAIN) {
1559                         tmp->txgain = MIN_VPB_GAIN;
1560                 } else {
1561                         tmp->txgain = txgain;
1562                 }
1563
1564                 ast_log(LOG_NOTICE, "VPB setting Tx Hw gain to [%f]\n", tmp->txgain);
1565                 vpb_play_set_hw_gain(tmp->handle, tmp->txgain);
1566         }
1567
1568         if (gains & VPB_GOT_RXHWG) {
1569                 if (rxgain > MAX_VPB_GAIN) {
1570                         tmp->rxgain = MAX_VPB_GAIN;
1571                 } else if (rxgain < MIN_VPB_GAIN) {
1572                         tmp->rxgain = MIN_VPB_GAIN;
1573                 } else {
1574                         tmp->rxgain = rxgain;
1575                 }
1576                 ast_log(LOG_NOTICE, "VPB setting Rx Hw gain to [%f]\n", tmp->rxgain);
1577                 vpb_record_set_hw_gain(tmp->handle, tmp->rxgain);
1578         }
1579
1580         if (gains & VPB_GOT_TXSWG) {
1581                 tmp->txswgain = txswgain;
1582                 ast_log(LOG_NOTICE, "VPB setting Tx Sw gain to [%f]\n", tmp->txswgain);
1583                 vpb_play_set_gain(tmp->handle, tmp->txswgain);
1584         }
1585
1586         if (gains & VPB_GOT_RXSWG) {
1587                 tmp->rxswgain = rxswgain;
1588                 ast_log(LOG_NOTICE, "VPB setting Rx Sw gain to [%f]\n", tmp->rxswgain);
1589                 vpb_record_set_gain(tmp->handle, tmp->rxswgain);
1590         }
1591
1592         tmp->vpb_model = vpb_model_unknown;
1593         if (vpb_get_model(tmp->handle, buf) == VPB_OK) {
1594                 if (strcmp(buf, "V12PCI") == 0) {
1595                         tmp->vpb_model = vpb_model_v12pci;
1596                 } else if (strcmp(buf, "VPB4") == 0) {
1597                         tmp->vpb_model = vpb_model_v4pci;
1598                 }
1599         }
1600
1601         ast_mutex_init(&tmp->owner_lock);
1602         ast_mutex_init(&tmp->lock);
1603         ast_mutex_init(&tmp->record_lock);
1604         ast_mutex_init(&tmp->play_lock);
1605         ast_mutex_init(&tmp->play_dtmf_lock);
1606
1607         /* set default read state */
1608         tmp->read_state = 0;
1609
1610         tmp->golock = 0;
1611
1612         tmp->busy_timer_id = vpb_timer_get_unique_timer_id();
1613         vpb_timer_open(&tmp->busy_timer, tmp->handle, tmp->busy_timer_id, TIMER_PERIOD_BUSY);
1614
1615         tmp->ringback_timer_id = vpb_timer_get_unique_timer_id();
1616         vpb_timer_open(&tmp->ringback_timer, tmp->handle, tmp->ringback_timer_id, TIMER_PERIOD_RINGBACK);
1617
1618         tmp->ring_timer_id = vpb_timer_get_unique_timer_id();
1619         vpb_timer_open(&tmp->ring_timer, tmp->handle, tmp->ring_timer_id, timer_period_ring);
1620
1621         tmp->dtmfidd_timer_id = vpb_timer_get_unique_timer_id();
1622         vpb_timer_open(&tmp->dtmfidd_timer, tmp->handle, tmp->dtmfidd_timer_id, dtmf_idd);
1623
1624         if (mode == MODE_FXO){
1625                 if (use_ast_dtmfdet)
1626                         vpb_set_event_mask(tmp->handle, VPB_EVENTS_NODTMF);
1627                 else
1628                         vpb_set_event_mask(tmp->handle, VPB_EVENTS_ALL);
1629         } else {
1630 /*
1631                 if (use_ast_dtmfdet)
1632                         vpb_set_event_mask(tmp->handle, VPB_EVENTS_NODTMF);
1633                 else
1634 */
1635                         vpb_set_event_mask(tmp->handle, VPB_EVENTS_STAT);
1636         }
1637
1638         if ((tmp->vpb_model == vpb_model_v12pci) && (echo_cancel)) {
1639                 vpb_hostecho_on(tmp->handle);
1640         }
1641         if (use_ast_dtmfdet) {
1642                 tmp->vad = ast_dsp_new();
1643                 ast_dsp_set_features(tmp->vad, DSP_FEATURE_DIGIT_DETECT);
1644                 ast_dsp_set_digitmode(tmp->vad, DSP_DIGITMODE_DTMF);
1645                 if (relaxdtmf)
1646                         ast_dsp_set_digitmode(tmp->vad, DSP_DIGITMODE_DTMF|DSP_DIGITMODE_RELAXDTMF);
1647         } else {
1648                 tmp->vad = NULL;
1649         }
1650
1651         /* define grunt tone */
1652         vpb_settonedet(tmp->handle,&toned_ungrunt);
1653
1654         ast_log(LOG_NOTICE,"Voicetronix %s channel %s initialized (rxsg=%f/txsg=%f/rxhg=%f/txhg=%f)(0x%x/0x%x/0x%x)\n",
1655                 (tmp->vpb_model == vpb_model_v4pci) ? "V4PCI" :
1656                 (tmp->vpb_model == vpb_model_v12pci) ? "V12PCI" : "[Unknown model]",
1657                 tmp->dev, tmp->rxswgain, tmp->txswgain, tmp->rxgain, tmp->txgain, bal1, bal2, bal3);
1658
1659         return tmp;
1660 }
1661
1662 static int vpb_indicate(struct ast_channel *ast, int condition, const void *data, size_t datalen)
1663 {
1664         struct vpb_pvt *p = (struct vpb_pvt *)ast_channel_tech_pvt(ast);
1665         int res = 0;
1666
1667         if (use_ast_ind == 1) {
1668                 ast_verb(4, "%s: vpb_indicate called when using Ast Indications !?!\n", p->dev);
1669                 return 0;
1670         }
1671
1672         ast_verb(4, "%s: vpb_indicate [%d] state[%d]\n", p->dev, condition,ast_channel_state(ast));
1673 /*
1674         if (ast->_state != AST_STATE_UP) {
1675                 ast_verb(4, "%s: vpb_indicate Not in AST_STATE_UP\n", p->dev, condition,ast->_state);
1676                 return res;
1677         }
1678 */
1679
1680 /*
1681         ast_verb(4, "%s: LOCKING in indicate \n", p->dev);
1682         ast_verb(4, "%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count, p->lock.__m_owner);
1683 */
1684         ast_mutex_lock(&p->lock);
1685         switch (condition) {
1686         case AST_CONTROL_BUSY:
1687         case AST_CONTROL_CONGESTION:
1688                 if (ast_channel_state(ast) == AST_STATE_UP) {
1689                         playtone(p->handle, &Busytone);
1690                         p->state = VPB_STATE_PLAYBUSY;
1691                         vpb_timer_stop(p->busy_timer);
1692                         vpb_timer_start(p->busy_timer);
1693                 }
1694                 break;
1695         case AST_CONTROL_RINGING:
1696                 if (ast_channel_state(ast) == AST_STATE_UP) {
1697                         playtone(p->handle, &Ringbacktone);
1698                         p->state = VPB_STATE_PLAYRING;
1699                         ast_verb(4, "%s: vpb indicate: setting ringback timer [%d]\n", p->dev,p->ringback_timer_id);
1700
1701                         vpb_timer_stop(p->ringback_timer);
1702                         vpb_timer_start(p->ringback_timer);
1703                 }
1704                 break;
1705         case AST_CONTROL_ANSWER:
1706         case -1: /* -1 means stop playing? */
1707                 vpb_timer_stop(p->ringback_timer);
1708                 vpb_timer_stop(p->busy_timer);
1709                 stoptone(p->handle);
1710                 break;
1711         case AST_CONTROL_HANGUP:
1712                 if (ast_channel_state(ast) == AST_STATE_UP) {
1713                         playtone(p->handle, &Busytone);
1714                         p->state = VPB_STATE_PLAYBUSY;
1715                         vpb_timer_stop(p->busy_timer);
1716                         vpb_timer_start(p->busy_timer);
1717                 }
1718                 break;
1719         case AST_CONTROL_HOLD:
1720                 ast_moh_start(ast, (const char *) data, NULL);
1721                 break;
1722         case AST_CONTROL_UNHOLD:
1723                 ast_moh_stop(ast);
1724                 break;
1725         case AST_CONTROL_PVT_CAUSE_CODE:
1726                 res = -1;
1727                 break;
1728         default:
1729                 res = 0;
1730                 break;
1731         }
1732         ast_mutex_unlock(&p->lock);
1733         return res;
1734 }
1735
1736 static int vpb_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
1737 {
1738         struct vpb_pvt *p = (struct vpb_pvt *)ast_channel_tech_pvt(newchan);
1739
1740 /*
1741         ast_verb(4, "%s: LOCKING in fixup \n", p->dev);
1742         ast_verb(4, "%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1743 */
1744         ast_mutex_lock(&p->lock);
1745         ast_debug(1, "New owner for channel %s is %s\n", p->dev, ast_channel_name(newchan));
1746
1747         if (p->owner == oldchan) {
1748                 p->owner = newchan;
1749         }
1750
1751         if (ast_channel_state(newchan) == AST_STATE_RINGING){
1752                 if (use_ast_ind == 1) {
1753                         ast_verb(4, "%s: vpb_fixup Calling ast_indicate\n", p->dev);
1754                         ast_indicate(newchan, AST_CONTROL_RINGING);
1755                 } else {
1756                         ast_verb(4, "%s: vpb_fixup Calling vpb_indicate\n", p->dev);
1757                         vpb_indicate(newchan, AST_CONTROL_RINGING, NULL, 0);
1758                 }
1759         }
1760
1761         ast_mutex_unlock(&p->lock);
1762         return 0;
1763 }
1764
1765 static int vpb_digit_begin(struct ast_channel *ast, char digit)
1766 {
1767         /* XXX Modify this callback to let Asterisk control the length of DTMF */
1768         return 0;
1769 }
1770 static int vpb_digit_end(struct ast_channel *ast, char digit, unsigned int duration)
1771 {
1772         struct vpb_pvt *p = (struct vpb_pvt *)ast_channel_tech_pvt(ast);
1773         char s[2];
1774
1775         if (use_ast_dtmf) {
1776                 ast_verb(4, "%s: vpb_digit: asked to play digit[%c] but we are using asterisk dtmf play back?!\n", p->dev, digit);
1777                 return 0;
1778         }
1779
1780 /*
1781         ast_verb(4, "%s: LOCKING in digit \n", p->dev);
1782         ast_verb(4, "%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1783 */
1784         ast_mutex_lock(&p->lock);
1785
1786
1787         s[0] = digit;
1788         s[1] = '\0';
1789
1790         ast_verb(4, "%s: vpb_digit: asked to play digit[%s]\n", p->dev, s);
1791
1792         ast_mutex_lock(&p->play_dtmf_lock);
1793         strncat(p->play_dtmf, s, sizeof(p->play_dtmf) - strlen(p->play_dtmf) - 1);
1794         ast_mutex_unlock(&p->play_dtmf_lock);
1795
1796         ast_mutex_unlock(&p->lock);
1797         return 0;
1798 }
1799
1800 /* Places a call out of a VPB channel */
1801 static int vpb_call(struct ast_channel *ast, const char *dest, int timeout)
1802 {
1803         struct vpb_pvt *p = (struct vpb_pvt *)ast_channel_tech_pvt(ast);
1804         int res = 0, i;
1805         const char *s = strrchr(dest, '/');
1806         char dialstring[254] = "";
1807
1808 /*
1809         ast_verb(4, "%s: LOCKING in call \n", p->dev);
1810         ast_verb(4, "%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1811 */
1812         ast_mutex_lock(&p->lock);
1813         ast_verb(4, "%s: starting call to [%s]\n", p->dev, dest);
1814
1815         if (s)
1816                 s = s + 1;
1817         else
1818                 s = dest;
1819         ast_copy_string(dialstring, s, sizeof(dialstring));
1820         for (i = 0; dialstring[i] != '\0'; i++) {
1821                 if ((dialstring[i] == 'w') || (dialstring[i] == 'W'))
1822                         dialstring[i] = ',';
1823                 else if ((dialstring[i] == 'f') || (dialstring[i] == 'F'))
1824                         dialstring[i] = '&';
1825         }
1826
1827         if (ast_channel_state(ast) != AST_STATE_DOWN && ast_channel_state(ast) != AST_STATE_RESERVED) {
1828                 ast_log(LOG_WARNING, "vpb_call on %s neither down nor reserved!\n", ast_channel_name(ast));
1829                 ast_mutex_unlock(&p->lock);
1830                 return -1;
1831         }
1832         if (p->mode != MODE_FXO)  /* Station port, ring it. */
1833                 vpb_ring_station_async(p->handle, 2);
1834         else {
1835                 VPB_CALL call;
1836                 int j;
1837
1838                 /* Dial must timeout or it can leave channels unuseable */
1839                 if (timeout == 0) {
1840                         timeout = TIMER_PERIOD_NOANSWER;
1841                 } else {
1842                         timeout = timeout * 1000; /* convert from secs to ms. */
1843                 }
1844
1845                 /* These timeouts are only used with call progress dialing */
1846                 call.dialtones = 1; /* Number of dialtones to get outside line */
1847                 call.dialtone_timeout = VPB_DIALTONE_WAIT; /* Wait this long for dialtone (ms) */
1848                 call.ringback_timeout = VPB_RINGWAIT; /* Wait this long for ringing after dialing (ms) */
1849                 call.inter_ringback_timeout = VPB_CONNECTED_WAIT; /* If ringing stops for this long consider it connected (ms) */
1850                 call.answer_timeout = timeout; /* Time to wait for answer after ringing starts (ms) */
1851                 memcpy(&call.tone_map,  DialToneMap, sizeof(DialToneMap));
1852                 vpb_set_call(p->handle, &call);
1853
1854                 ast_verb(2, "%s: Calling %s on %s \n",p->dev, dialstring, ast_channel_name(ast));
1855
1856                 ast_verb(2, "%s: Dial parms for %s %d/%dms/%dms/%dms/%dms\n", p->dev,
1857                                 ast_channel_name(ast), call.dialtones, call.dialtone_timeout,
1858                                 call.ringback_timeout, call.inter_ringback_timeout,
1859                                 call.answer_timeout);
1860                 for (j = 0; !call.tone_map[j].terminate; j++) {
1861                         ast_verb(2, "%s: Dial parms for %s tone %d->%d\n", p->dev,
1862                                         ast_channel_name(ast), call.tone_map[j].tone_id, call.tone_map[j].call_id);
1863                 }
1864
1865                 ast_verb(4, "%s: Disabling Loop Drop detection\n", p->dev);
1866                 vpb_disable_event(p->handle, VPB_MDROP);
1867                 vpb_sethook_sync(p->handle, VPB_OFFHOOK);
1868                 p->state = VPB_STATE_OFFHOOK;
1869
1870                 #ifndef DIAL_WITH_CALL_PROGRESS
1871                 vpb_sleep(300);
1872                 ast_verb(4, "%s: Enabling Loop Drop detection\n", p->dev);
1873                 vpb_enable_event(p->handle, VPB_MDROP);
1874                 res = vpb_dial_async(p->handle, dialstring);
1875                 #else
1876                 ast_verb(4, "%s: Enabling Loop Drop detection\n", p->dev);
1877                 vpb_enable_event(p->handle, VPB_MDROP);
1878                 res = vpb_call_async(p->handle, dialstring);
1879                 #endif
1880
1881                 if (res != VPB_OK) {
1882                         ast_debug(1, "Call on %s to %s failed: %d\n", ast_channel_name(ast), s, res);
1883                         res = -1;
1884                 } else
1885                         res = 0;
1886         }
1887
1888         ast_verb(3, "%s: VPB Calling %s [t=%d] on %s returned %d\n", p->dev , s, timeout, ast_channel_name(ast), res);
1889         if (res == 0) {
1890                 ast_setstate(ast, AST_STATE_RINGING);
1891                 ast_queue_control(ast, AST_CONTROL_RINGING);
1892         }
1893
1894         if (!p->readthread) {
1895                 ast_pthread_create(&p->readthread, NULL, do_chanreads, (void *)p);
1896         }
1897
1898         ast_mutex_unlock(&p->lock);
1899         return res;
1900 }
1901
1902 static int vpb_hangup(struct ast_channel *ast)
1903 {
1904         struct vpb_pvt *p = (struct vpb_pvt *)ast_channel_tech_pvt(ast);
1905         VPB_EVENT je;
1906         char str[VPB_MAX_STR];
1907
1908 /*
1909         ast_verb(4, "%s: LOCKING in hangup \n", p->dev);
1910         ast_verb(4, "%s: LOCKING in hangup count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1911         ast_verb(4, "%s: LOCKING pthread_self(%d)\n", p->dev,pthread_self());
1912         ast_mutex_lock(&p->lock);
1913 */
1914         ast_verb(2, "%s: Hangup requested\n", ast_channel_name(ast));
1915
1916         if (!ast_channel_tech(ast) || !ast_channel_tech_pvt(ast)) {
1917                 ast_log(LOG_WARNING, "%s: channel not connected?\n", ast_channel_name(ast));
1918                 ast_mutex_unlock(&p->lock);
1919                 /* Free up ast dsp if we have one */
1920                 if (use_ast_dtmfdet && p->vad) {
1921                         ast_dsp_free(p->vad);
1922                         p->vad = NULL;
1923                 }
1924                 return 0;
1925         }
1926
1927
1928
1929         /* Stop record */
1930         p->stopreads = 1;
1931         if (p->readthread) {
1932                 pthread_join(p->readthread, NULL);
1933                 ast_verb(4, "%s: stopped record thread \n", ast_channel_name(ast));
1934         }
1935
1936         /* Stop play */
1937         if (p->lastoutput != -1) {
1938                 ast_verb(2, "%s: Ending play mode \n", ast_channel_name(ast));
1939                 vpb_play_terminate(p->handle);
1940                 ast_mutex_lock(&p->play_lock);
1941                 vpb_play_buf_finish(p->handle);
1942                 ast_mutex_unlock(&p->play_lock);
1943         }
1944
1945         ast_verb(4, "%s: Setting state down\n", ast_channel_name(ast));
1946         ast_setstate(ast, AST_STATE_DOWN);
1947
1948
1949 /*
1950         ast_verb(4, "%s: LOCKING in hangup \n", p->dev);
1951         ast_verb(4, "%s: LOCKING in hangup count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
1952         ast_verb(4, "%s: LOCKING pthread_self(%d)\n", p->dev,pthread_self());
1953 */
1954         ast_mutex_lock(&p->lock);
1955
1956         if (p->mode != MODE_FXO) {
1957                 /* station port. */
1958                 vpb_ring_station_async(p->handle, 0);
1959                 if (p->state != VPB_STATE_ONHOOK) {
1960                         /* This is causing a "dial end" "play tone" loop
1961                         playtone(p->handle, &Busytone);
1962                         p->state = VPB_STATE_PLAYBUSY;
1963                         ast_verb(5, "%s: Station offhook[%d], playing busy tone\n",
1964                                                                 ast->name,p->state);
1965                         */
1966                 } else {
1967                         stoptone(p->handle);
1968                 }
1969                 #ifdef VPB_PRI
1970                 vpb_setloop_async(p->handle, VPB_OFFHOOK);
1971                 vpb_sleep(100);
1972                 vpb_setloop_async(p->handle, VPB_ONHOOK);
1973                 #endif
1974         } else {
1975                 stoptone(p->handle); /* Terminates any dialing */
1976                 vpb_sethook_sync(p->handle, VPB_ONHOOK);
1977                 p->state=VPB_STATE_ONHOOK;
1978         }
1979         while (VPB_OK == vpb_get_event_ch_async(p->handle, &je)) {
1980                 vpb_translate_event(&je, str);
1981                 ast_verb(4, "%s: Flushing event [%d]=>%s\n", ast_channel_name(ast), je.type, str);
1982         }
1983
1984         p->readthread = 0;
1985         p->lastoutput = -1;
1986         p->lastinput = -1;
1987         p->last_ignore_dtmf = 1;
1988         p->ext[0] = 0;
1989         p->dialtone = 0;
1990
1991         p->owner = NULL;
1992         ast_channel_tech_pvt_set(ast, NULL);
1993
1994         /* Free up ast dsp if we have one */
1995         if (use_ast_dtmfdet && p->vad) {
1996                 ast_dsp_free(p->vad);
1997                 p->vad = NULL;
1998         }
1999
2000         ast_verb(2, "%s: Hangup complete\n", ast_channel_name(ast));
2001
2002         restart_monitor();
2003         ast_mutex_unlock(&p->lock);
2004         return 0;
2005 }
2006
2007 static int vpb_answer(struct ast_channel *ast)
2008 {
2009         struct vpb_pvt *p = (struct vpb_pvt *)ast_channel_tech_pvt(ast);
2010 /*
2011         VPB_EVENT je;
2012         int ret;
2013         ast_verb(4, "%s: LOCKING in answer \n", p->dev);
2014         ast_verb(4, "%s: LOCKING count[%d] owner[%d] \n", p->dev, p->lock.__m_count,p->lock.__m_owner);
2015 */
2016         ast_mutex_lock(&p->lock);
2017
2018         ast_verb(4, "%s: Answering channel\n", p->dev);
2019
2020         if (p->mode == MODE_FXO) {
2021                 ast_verb(4, "%s: Disabling Loop Drop detection\n", p->dev);
2022                 vpb_disable_event(p->handle, VPB_MDROP);
2023         }
2024
2025         if (ast_channel_state(ast) != AST_STATE_UP) {
2026                 if (p->mode == MODE_FXO) {
2027                         vpb_sethook_sync(p->handle, VPB_OFFHOOK);
2028                         p->state = VPB_STATE_OFFHOOK;
2029 /*                      vpb_sleep(500);
2030                         ret = vpb_get_event_ch_async(p->handle, &je);
2031                         if ((ret == VPB_OK) && ((je.type != VPB_DROP)&&(je.type != VPB_RING))){
2032                                 ast_verb(4, "%s: Answer collected a wrong event!!\n", p->dev);
2033                                 vpb_put_event(&je);
2034                         }
2035 */
2036                 }
2037                 ast_setstate(ast, AST_STATE_UP);
2038
2039                 ast_verb(2, "%s: Answered call on %s [%s]\n", p->dev,
2040                                          ast_channel_name(ast), (p->mode == MODE_FXO) ? "FXO" : "FXS");
2041
2042                 ast_channel_rings_set(ast, 0);
2043                 if (!p->readthread) {
2044         /*              res = ast_mutex_unlock(&p->lock); */
2045         /*              ast_verbose("%s: unLOCKING in answer [%d]\n", p->dev,res); */
2046                         ast_pthread_create(&p->readthread, NULL, do_chanreads, (void *)p);
2047                 } else {
2048                         ast_verb(4, "%s: Record thread already running!!\n", p->dev);
2049                 }
2050         } else {
2051                 ast_verb(4, "%s: Answered state is up\n", p->dev);
2052         /*      res = ast_mutex_unlock(&p->lock); */
2053         /*      ast_verbose("%s: unLOCKING in answer [%d]\n", p->dev,res); */
2054         }
2055         vpb_sleep(500);
2056         if (p->mode == MODE_FXO) {
2057                 ast_verb(4, "%s: Re-enabling Loop Drop detection\n", p->dev);
2058                 vpb_enable_event(p->handle, VPB_MDROP);
2059         }
2060         ast_mutex_unlock(&p->lock);
2061         return 0;
2062 }
2063
2064 static struct ast_frame *vpb_read(struct ast_channel *ast)
2065 {
2066         struct vpb_pvt *p = (struct vpb_pvt *)ast_channel_tech_pvt(ast);
2067         static struct ast_frame f = { AST_FRAME_NULL };
2068
2069         f.src = "vpb";
2070         ast_log(LOG_NOTICE, "%s: vpb_read: should never be called!\n", p->dev);
2071         ast_verbose("%s: vpb_read: should never be called!\n", p->dev);
2072
2073         return &f;
2074 }
2075
2076 static inline AudioCompress ast2vpbformat(struct ast_format *format)
2077 {
2078         if (ast_format_cmp(format, ast_format_alaw) == AST_FORMAT_CMP_EQUAL) {
2079                 return VPB_ALAW;
2080         } else if (ast_format_cmp(format, ast_format_slin) == AST_FORMAT_CMP_EQUAL) {
2081                 return VPB_LINEAR;
2082         } else if (ast_format_cmp(format, ast_format_ulaw) == AST_FORMAT_CMP_EQUAL) {
2083                 return VPB_MULAW;
2084         } else if (ast_format_cmp(format, ast_format_adpcm) == AST_FORMAT_CMP_EQUAL) {
2085                 return VPB_OKIADPCM;
2086         } else {
2087                 return VPB_RAW;
2088         }
2089 }
2090
2091 static inline const char * ast2vpbformatname(struct ast_format *format)
2092 {
2093         if (ast_format_cmp(format, ast_format_alaw) == AST_FORMAT_CMP_EQUAL) {
2094                 return "AST_FORMAT_ALAW:VPB_ALAW";
2095         } else if (ast_format_cmp(format, ast_format_slin) == AST_FORMAT_CMP_EQUAL) {
2096                 return "AST_FORMAT_SLINEAR:VPB_LINEAR";
2097         } else if (ast_format_cmp(format, ast_format_ulaw) == AST_FORMAT_CMP_EQUAL) {
2098                 return "AST_FORMAT_ULAW:VPB_MULAW";
2099         } else if (ast_format_cmp(format, ast_format_adpcm) == AST_FORMAT_CMP_EQUAL) {
2100                 return "AST_FORMAT_ADPCM:VPB_OKIADPCM";
2101         } else {
2102                 return "UNKN:UNKN";
2103         }
2104 }
2105
2106 static inline int astformatbits(struct ast_format *format)
2107 {
2108         if (ast_format_cmp(format, ast_format_slin) == AST_FORMAT_CMP_EQUAL) {
2109                 return 16;
2110         } else if (ast_format_cmp(format, ast_format_adpcm) == AST_FORMAT_CMP_EQUAL) {
2111                 return 4;
2112         } else {
2113                 return 8;
2114         }
2115 }
2116
2117 int a_gain_vector(float g, short *v, int n)
2118 {
2119         int i;
2120         float tmp;
2121         for (i = 0; i < n; i++) {
2122                 tmp = g * v[i];
2123                 if (tmp > 32767.0)
2124                         tmp = 32767.0;
2125                 if (tmp < -32768.0)
2126                         tmp = -32768.0;
2127                 v[i] = (short)tmp;
2128         }
2129         return i;
2130 }
2131
2132 /* Writes a frame of voice data to a VPB channel */
2133 static int vpb_write(struct ast_channel *ast, struct ast_frame *frame)
2134 {
2135         struct vpb_pvt *p = (struct vpb_pvt *)ast_channel_tech_pvt(ast);
2136         int res = 0;
2137         AudioCompress fmt = VPB_RAW;
2138         struct timeval play_buf_time_start;
2139         int tdiff;
2140
2141 /*      ast_mutex_lock(&p->lock); */
2142         ast_verb(6, "%s: vpb_write: Writing to channel\n", p->dev);
2143
2144         if (frame->frametype != AST_FRAME_VOICE) {
2145                 ast_verb(4, "%s: vpb_write: Don't know how to handle from type %d\n", ast_channel_name(ast), frame->frametype);
2146 /*              ast_mutex_unlock(&p->lock); */
2147                 return 0;
2148         } else if (ast_channel_state(ast) != AST_STATE_UP) {
2149                 ast_verb(4, "%s: vpb_write: Attempt to Write frame type[%d]subclass[%s] on not up chan(state[%d])\n",
2150                         ast_channel_name(ast), frame->frametype, ast_format_get_name(frame->subclass.format), ast_channel_state(ast));
2151                 p->lastoutput = -1;
2152 /*              ast_mutex_unlock(&p->lock); */
2153                 return 0;
2154         }
2155 /*      ast_debug(1, "%s: vpb_write: Checked frame type..\n", p->dev); */
2156
2157
2158         fmt = ast2vpbformat(frame->subclass.format);
2159         if (fmt < 0) {
2160                 ast_log(LOG_WARNING, "%s: vpb_write: Cannot handle frames of %s format!\n", ast_channel_name(ast),
2161                         ast_format_get_name(frame->subclass.format));
2162                 return -1;
2163         }
2164
2165         tdiff = ast_tvdiff_ms(ast_tvnow(), p->lastplay);
2166         ast_debug(1, "%s: vpb_write: time since last play(%d) \n", p->dev, tdiff);
2167         if (tdiff < (VPB_SAMPLES / 8 - 1)) {
2168                 ast_debug(1, "%s: vpb_write: Asked to play too often (%d) (%d)\n", p->dev, tdiff, frame->datalen);
2169 /*              return 0; */
2170         }
2171         p->lastplay = ast_tvnow();
2172 /*
2173         ast_debug(1, "%s: vpb_write: Checked frame format..\n", p->dev);
2174 */
2175
2176         ast_mutex_lock(&p->play_lock);
2177
2178 /*
2179         ast_debug(1, "%s: vpb_write: Got play lock..\n", p->dev);
2180 */
2181
2182         /* Check if we have set up the play_buf */
2183         if (p->lastoutput == -1) {
2184                 vpb_play_buf_start(p->handle, fmt);
2185                 ast_verb(2, "%s: vpb_write: Starting play mode (codec=%d)[%s]\n", p->dev, fmt, ast2vpbformatname(frame->subclass.format));
2186                 p->lastoutput = fmt;
2187                 ast_mutex_unlock(&p->play_lock);
2188                 return 0;
2189         } else if (p->lastoutput != fmt) {
2190                 vpb_play_buf_finish(p->handle);
2191                 vpb_play_buf_start(p->handle, fmt);
2192                 ast_verb(2, "%s: vpb_write: Changed play format (%d=>%d)\n", p->dev, p->lastoutput, fmt);
2193                 ast_mutex_unlock(&p->play_lock);
2194                 return 0;
2195         }
2196         p->lastoutput = fmt;
2197
2198
2199
2200         /* Apply extra gain ! */
2201         if( p->txswgain > MAX_VPB_GAIN )
2202                 a_gain_vector(p->txswgain - MAX_VPB_GAIN , (short*)frame->data.ptr, frame->datalen / sizeof(short));
2203
2204 /*      ast_debug(1, "%s: vpb_write: Applied gain..\n", p->dev); */
2205 /*      ast_debug(1, "%s: vpb_write: play_buf_time %d\n", p->dev, p->play_buf_time); */
2206
2207         if ((p->read_state == 1) && (p->play_buf_time < 5)){
2208                 play_buf_time_start = ast_tvnow();
2209 /*              res = vpb_play_buf_sync(p->handle, (char *)frame->data, tdiff * 8 * 2); */
2210                 res = vpb_play_buf_sync(p->handle, (char *)frame->data.ptr, frame->datalen);
2211                 if(res == VPB_OK) {
2212                         short * data = (short*)frame->data.ptr;
2213                         ast_verb(6, "%s: vpb_write: Wrote chan (codec=%d) %d %d\n", p->dev, fmt, data[0], data[1]);
2214                 }
2215                 p->play_buf_time = ast_tvdiff_ms(ast_tvnow(), play_buf_time_start);
2216         } else {
2217                 p->chuck_count++;
2218                 ast_debug(1, "%s: vpb_write: Tossed data away, tooooo much data!![%d]\n", p->dev, p->chuck_count);
2219                 p->play_buf_time = 0;
2220         }
2221
2222         ast_mutex_unlock(&p->play_lock);
2223 /*      ast_mutex_unlock(&p->lock); */
2224         ast_verb(6, "%s: vpb_write: Done Writing to channel\n", p->dev);
2225         return 0;
2226 }
2227
2228 /* Read monitor thread function. */
2229 static void *do_chanreads(void *pvt)
2230 {
2231         struct vpb_pvt *p = (struct vpb_pvt *)pvt;
2232         struct ast_frame *fr = &p->fr;
2233         char *readbuf = ((char *)p->buf) + AST_FRIENDLY_OFFSET;
2234         int bridgerec = 0;
2235         struct ast_format *tmpfmt;
2236         int readlen, res, trycnt=0;
2237         AudioCompress fmt;
2238         int ignore_dtmf;
2239         const char * getdtmf_var = NULL;
2240
2241         fr->frametype = AST_FRAME_VOICE;
2242         fr->src = "vpb";
2243         fr->mallocd = 0;
2244         fr->delivery.tv_sec = 0;
2245         fr->delivery.tv_usec = 0;
2246         fr->samples = VPB_SAMPLES;
2247         fr->offset = AST_FRIENDLY_OFFSET;
2248         memset(p->buf, 0, sizeof p->buf);
2249
2250         ast_verb(3, "%s: chanreads: starting thread\n", p->dev);
2251         ast_mutex_lock(&p->record_lock);
2252
2253         p->stopreads = 0;
2254         p->read_state = 1;
2255         while (!p->stopreads && p->owner) {
2256
2257                 ast_verb(5, "%s: chanreads: Starting cycle ...\n", p->dev);
2258                 ast_verb(5, "%s: chanreads: Checking bridge \n", p->dev);
2259                 if (p->bridge) {
2260                         bridgerec = 0;
2261                 } else {
2262                         bridgerec = ast_channel_is_bridged(p->owner) ? 1 : 0;
2263                 }
2264
2265 /*              if ((p->owner->_state != AST_STATE_UP) || !bridgerec) */
2266                 if ((ast_channel_state(p->owner) != AST_STATE_UP)) {
2267                         if (ast_channel_state(p->owner) != AST_STATE_UP) {
2268                                 ast_verb(5, "%s: chanreads: Im not up[%d]\n", p->dev, ast_channel_state(p->owner));
2269                         } else {
2270                                 ast_verb(5, "%s: chanreads: No bridgerec[%d]\n", p->dev, bridgerec);
2271                         }
2272                         vpb_sleep(10);
2273                         continue;
2274                 }
2275
2276                 /* Voicetronix DTMF detection can be triggered off ordinary speech
2277                  * This leads to annoying beeps during the conversation
2278                  * Avoid this problem by just setting VPB_GETDTMF when you want to listen for DTMF
2279                  */
2280                 /* ignore_dtmf = 1; */
2281                 ignore_dtmf = 0; /* set this to 1 to turn this feature on */
2282                 getdtmf_var = pbx_builtin_getvar_helper(p->owner, "VPB_GETDTMF");
2283                 if (getdtmf_var && strcasecmp(getdtmf_var, "yes") == 0)
2284                         ignore_dtmf = 0;
2285
2286                 if ((ignore_dtmf != p->last_ignore_dtmf) && (!use_ast_dtmfdet)){
2287                         ast_verb(2, "%s:Now %s DTMF \n",
2288                                         p->dev, ignore_dtmf ? "ignoring" : "listening for");
2289                         vpb_set_event_mask(p->handle, ignore_dtmf ? VPB_EVENTS_NODTMF : VPB_EVENTS_ALL );
2290                 }
2291                 p->last_ignore_dtmf = ignore_dtmf;
2292
2293                 /* Play DTMF digits here to avoid problem you get if playing a digit during
2294                  * a record operation
2295                  */
2296                 ast_verb(6, "%s: chanreads: Checking dtmf's \n", p->dev);
2297                 ast_mutex_lock(&p->play_dtmf_lock);
2298                 if (p->play_dtmf[0]) {
2299                         /* Try to ignore DTMF event we get after playing digit */
2300                         /* This DTMF is played by asterisk and leads to an annoying trailing beep on CISCO phones */
2301                         if (!ignore_dtmf) {
2302                                 vpb_set_event_mask(p->handle, VPB_EVENTS_NODTMF );
2303                         }
2304                         if (p->bridge == NULL) {
2305                                 vpb_dial_sync(p->handle, p->play_dtmf);
2306                                 ast_verb(2, "%s: chanreads: Played DTMF %s\n", p->dev, p->play_dtmf);
2307                         } else {
2308                                 ast_verb(2, "%s: chanreads: Not playing DTMF frame on native bridge\n", p->dev);
2309                         }
2310                         p->play_dtmf[0] = '\0';
2311                         ast_mutex_unlock(&p->play_dtmf_lock);
2312                         vpb_sleep(700); /* Long enough to miss echo and DTMF event */
2313                         if( !ignore_dtmf)
2314                                 vpb_set_event_mask(p->handle, VPB_EVENTS_ALL);
2315                         continue;
2316                 }
2317                 ast_mutex_unlock(&p->play_dtmf_lock);
2318
2319                 if (p->owner) {
2320                         tmpfmt = ast_channel_rawreadformat(p->owner);
2321                 } else {
2322                         tmpfmt = ast_format_slin;
2323                 }
2324                 fmt = ast2vpbformat(tmpfmt);
2325                 if (fmt < 0) {
2326                         ast_log(LOG_WARNING, "%s: Record failure (unsupported format %s)\n", p->dev, ast_format_get_name(tmpfmt));
2327                         return NULL;
2328                 }
2329                 readlen = VPB_SAMPLES * astformatbits(tmpfmt) / 8;
2330
2331                 if (p->lastinput == -1) {
2332                         vpb_record_buf_start(p->handle, fmt);
2333 /*                      vpb_reset_record_fifo_alarm(p->handle); */
2334                         p->lastinput = fmt;
2335                         ast_verb(2, "%s: Starting record mode (codec=%d)[%s]\n", p->dev, fmt, ast2vpbformatname(tmpfmt));
2336                         continue;
2337                 } else if (p->lastinput != fmt) {
2338                         vpb_record_buf_finish(p->handle);
2339                         vpb_record_buf_start(p->handle, fmt);
2340                         p->lastinput = fmt;
2341                         ast_verb(2, "%s: Changed record format (%d=>%d)\n", p->dev, p->lastinput, fmt);
2342                         continue;
2343                 }
2344
2345                 /* Read only if up and not bridged, or a bridge for which we can read. */
2346                 ast_verb(6, "%s: chanreads: getting buffer!\n", p->dev);
2347                 if( (res = vpb_record_buf_sync(p->handle, readbuf, readlen) ) == VPB_OK ) {
2348                         ast_verb(6, "%s: chanreads: got buffer!\n", p->dev);
2349                         /* Apply extra gain ! */
2350                         if( p->rxswgain > MAX_VPB_GAIN )
2351                                 a_gain_vector(p->rxswgain - MAX_VPB_GAIN, (short *)readbuf, readlen / sizeof(short));
2352                         ast_verb(6, "%s: chanreads: applied gain\n", p->dev);
2353
2354                         fr->subclass.format = tmpfmt;
2355                         fr->data.ptr = readbuf;
2356                         fr->datalen = readlen;
2357                         fr->frametype = AST_FRAME_VOICE;
2358
2359                         if ((use_ast_dtmfdet) && (p->vad)) {
2360                                 fr = ast_dsp_process(p->owner, p->vad, fr);
2361                                 if (fr && (fr->frametype == AST_FRAME_DTMF)) {
2362                                         ast_debug(1, "%s: chanreads: Detected DTMF '%c'\n", p->dev, fr->subclass.integer);
2363                                 } else if (fr->subclass.integer == 'f') {
2364                                 }
2365                         }
2366                         /* Using trylock here to prevent deadlock when channel is hungup
2367                          * (ast_hangup() immediately gets lock)
2368                          */
2369                         if (p->owner && !p->stopreads) {
2370                                 ast_verb(6, "%s: chanreads: queueing buffer on read frame q (state[%d])\n", p->dev, ast_channel_state(p->owner));
2371                                 do {
2372                                         res = ast_channel_trylock(p->owner);
2373                                         trycnt++;
2374                                 } while ((res !=0 ) && (trycnt < 300));
2375                                 if (res == 0) {
2376                                         ast_queue_frame(p->owner, fr);
2377                                         ast_channel_unlock(p->owner);
2378                                 } else {
2379                                         ast_verb(5, "%s: chanreads: Couldnt get lock after %d tries!\n", p->dev, trycnt);
2380                                 }
2381                                 trycnt = 0;
2382
2383 /*
2384                                 res = ast_mutex_trylock(&p->owner->lock);
2385                                 if (res == 0)  {
2386                                         ast_queue_frame(p->owner, fr);
2387                                         ast_mutex_unlock(&p->owner->lock);
2388                                 } else {
2389                                         if (res == EINVAL)
2390                                                 ast_verb(5, "%s: chanreads: try owner->lock gave me EINVAL[%d]\n", p->dev, res);
2391                                         else if (res == EBUSY)
2392                                                 ast_verb(5, "%s: chanreads: try owner->lock gave me EBUSY[%d]\n", p->dev, res);
2393                                         while (res != 0) {
2394                                         res = ast_mutex_trylock(&p->owner->lock);
2395                                         }
2396                                         if (res == 0) {
2397                                                 ast_queue_frame(p->owner, fr);
2398                                                 ast_mutex_unlock(&p->owner->lock);
2399                                         } else {
2400                                                 if (res == EINVAL) {
2401                                                         ast_verb(5, "%s: chanreads: try owner->lock gave me EINVAL[%d]\n", p->dev, res);
2402                                                 } else if (res == EBUSY) {
2403                                                         ast_verb(5, "%s: chanreads: try owner->lock gave me EBUSY[%d]\n", p->dev, res);
2404                                                 }
2405                                                 ast_verb(5, "%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);
2406                                         }
2407                                 }
2408 */
2409                                         short *data = (short *)readbuf;
2410                                 ast_verb(7, "%s: Read channel (codec=%d) %d %d\n", p->dev, fmt, data[0], data[1]);
2411                         } else {
2412                                 ast_verb(5, "%s: p->stopreads[%d] p->owner[%p]\n", p->dev, p->stopreads, (void *)p->owner);
2413                         }
2414                 }
2415                 ast_verb(5, "%s: chanreads: Finished cycle...\n", p->dev);
2416         }
2417         p->read_state = 0;
2418
2419         /* When stopreads seen, go away! */
2420         vpb_record_buf_finish(p->handle);
2421         p->read_state = 0;
2422         ast_mutex_unlock(&p->record_lock);
2423
2424         ast_verb(2, "%s: Ending record mode (%d/%s)\n",
2425                          p->dev, p->stopreads, p->owner ? "yes" : "no");
2426         return NULL;
2427 }
2428
2429 static struct ast_channel *vpb_new(struct vpb_pvt *me, enum ast_channel_state state, const char *context, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor)
2430 {
2431         struct ast_channel *tmp;
2432         char cid_num[256];
2433         char cid_name[256];
2434
2435         if (me->owner) {
2436             ast_log(LOG_WARNING, "Called vpb_new on owned channel (%s) ?!\n", me->dev);
2437             return NULL;
2438         }
2439         ast_verb(4, "%s: New call for context [%s]\n", me->dev, context);
2440
2441         tmp = ast_channel_alloc(1, state, 0, 0, "", me->ext, me->context, assignedids, requestor, AST_AMA_NONE, "%s", me->dev);
2442         if (tmp) {
2443                 if (use_ast_ind == 1){
2444                         ast_channel_tech_set(tmp, &vpb_tech_indicate);
2445                 } else {
2446                         ast_channel_tech_set(tmp, &vpb_tech);
2447                 }
2448
2449                 ast_channel_callgroup_set(tmp, me->callgroup);
2450                 ast_channel_pickupgroup_set(tmp, me->pickupgroup);
2451
2452                 /* Linear is the preferred format. Although Voicetronix supports other formats
2453                  * they are all converted to/from linear in the vpb code. Best for us to use
2454                  * linear since we can then adjust volume in this modules.
2455                  */
2456                 ast_channel_nativeformats_set(tmp, vpb_tech.capabilities);
2457                 ast_channel_set_rawreadformat(tmp, ast_format_slin);
2458                 ast_channel_set_rawwriteformat(tmp, ast_format_slin);
2459                 if (state == AST_STATE_RING) {
2460                         ast_channel_rings_set(tmp, 1);
2461                         cid_name[0] = '\0';
2462                         cid_num[0] = '\0';
2463                         ast_callerid_split(me->callerid, cid_name, sizeof(cid_name), cid_num, sizeof(cid_num));
2464                         ast_set_callerid(tmp, cid_num, cid_name, cid_num);
2465                 }
2466                 ast_channel_tech_pvt_set(tmp, me);
2467
2468                 ast_channel_context_set(tmp, context);
2469                 if (!ast_strlen_zero(me->ext))
2470                         ast_channel_exten_set(tmp, me->ext);
2471                 else
2472                         ast_channel_exten_set(tmp, "s");
2473                 if (!ast_strlen_zero(me->language))
2474                         ast_channel_language_set(tmp, me->language);
2475                 ast_channel_unlock(tmp);
2476
2477                 me->owner = tmp;
2478
2479                 me->bridge = NULL;
2480                 me->lastoutput = -1;
2481                 me->lastinput = -1;
2482                 me->last_ignore_dtmf = 1;
2483                 me->readthread = 0;
2484                 me->play_dtmf[0] = '\0';
2485                 me->faxhandled = 0;
2486
2487                 me->lastgrunt = ast_tvnow(); /* Assume at least one grunt tone seen now. */
2488                 me->lastplay = ast_tvnow(); /* Assume at least one grunt tone seen now. */
2489
2490                 if (state != AST_STATE_DOWN) {
2491                         if ((me->mode != MODE_FXO) && (state != AST_STATE_UP)) {
2492                                 vpb_answer(tmp);
2493                         }
2494                         if (ast_pbx_start(tmp)) {
2495                                 ast_log(LOG_WARNING, "Unable to start PBX on %s\n", ast_channel_name(tmp));
2496                                 ast_hangup(tmp);
2497                         }
2498                 }
2499         } else {
2500                 ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
2501         }
2502         return tmp;
2503 }
2504
2505 static struct ast_channel *vpb_request(const char *type, struct ast_format_cap *cap, const struct ast_assigned_ids *assignedids, const struct ast_channel *requestor, const char *data, int *cause)
2506 {
2507         struct vpb_pvt *p;
2508         struct ast_channel *tmp = NULL;
2509         char *sepstr, *name;
2510         const char *s;
2511         int group = -1;
2512
2513         if (!(ast_format_cap_iscompatible_format(cap, ast_format_slin))) {
2514                 struct ast_str *buf;
2515
2516                 buf = ast_str_create(AST_FORMAT_CAP_NAMES_LEN);
2517                 if (!buf) {
2518                         return NULL;
2519                 }
2520                 ast_log(LOG_NOTICE, "Asked to create a channel for unsupported formats: %s\n",
2521                         ast_format_cap_get_names(cap, &buf));
2522                 ast_free(buf);
2523                 return NULL;
2524         }
2525
2526         name = ast_strdup(S_OR(data, ""));
2527
2528         sepstr = name;
2529         s = strsep(&sepstr, "/"); /* Handle / issues */
2530         if (!s)
2531                 s = "";
2532         /* Check if we are looking for a group */
2533         if (toupper(name[0]) == 'G' || toupper(name[0]) == 'R') {
2534                 group = atoi(name + 1);
2535         }
2536         /* Search for an unowned channel */
2537         ast_mutex_lock(&iflock);
2538         for (p = iflist; p; p = p->next) {
2539                 if (group == -1) {
2540                         if (strncmp(s, p->dev + 4, sizeof p->dev) == 0) {
2541                                 if (!p->owner) {
2542                                         tmp = vpb_new(p, AST_STATE_DOWN, p->context, assignedids, requestor);
2543                                         break;
2544                                 }
2545                         }
2546                 } else {
2547                         if ((p->group == group) && (!p->owner)) {
2548                                 tmp = vpb_new(p, AST_STATE_DOWN, p->context, assignedids, requestor);
2549                                 break;
2550                         }
2551                 }
2552         }
2553         ast_mutex_unlock(&iflock);
2554
2555
2556         ast_verb(2, " %s requested, got: [%s]\n", name, tmp ? ast_channel_name(tmp) : "None");
2557
2558         ast_free(name);
2559
2560         restart_monitor();
2561         return tmp;
2562 }
2563
2564 static float parse_gain_value(const char *gain_type, const char *value)
2565 {
2566         float gain;
2567
2568         /* try to scan number */
2569         if (sscanf(value, "%f", &gain) != 1) {
2570                 ast_log(LOG_ERROR, "Invalid %s value '%s' in '%s' config\n", value, gain_type, config);
2571                 return DEFAULT_GAIN;
2572         }
2573
2574
2575         /* percentage? */
2576         /*if (value[strlen(value) - 1] == '%') */
2577         /*      return gain / (float)100; */
2578
2579         return gain;
2580 }
2581
2582
2583 static int unload_module(void)
2584 {
2585         struct vpb_pvt *p;
2586         /* First, take us out of the channel loop */
2587         if (use_ast_ind == 1){
2588                 ast_channel_unregister(&vpb_tech_indicate);
2589         } else {
2590                 ast_channel_unregister(&vpb_tech);
2591         }
2592
2593         ast_mutex_lock(&iflock);
2594         /* Hangup all interfaces if they have an owner */
2595         for (p = iflist; p; p = p->next) {
2596                 if (p->owner)
2597                         ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
2598         }
2599         iflist = NULL;
2600         ast_mutex_unlock(&iflock);
2601
2602         ast_mutex_lock(&monlock);
2603         if (mthreadactive > -1) {
2604                 pthread_cancel(monitor_thread);
2605                 pthread_join(monitor_thread, NULL);
2606         }
2607         mthreadactive = -2;
2608         ast_mutex_unlock(&monlock);
2609
2610         ast_mutex_lock(&iflock);
2611         /* Destroy all the interfaces and free their memory */
2612
2613         while (iflist) {
2614                 p = iflist;
2615                 ast_mutex_destroy(&p->lock);
2616                 pthread_cancel(p->readthread);
2617                 ast_mutex_destroy(&p->owner_lock);
2618                 ast_mutex_destroy(&p->record_lock);
2619                 ast_mutex_destroy(&p->play_lock);
2620                 ast_mutex_destroy(&p->play_dtmf_lock);
2621                 p->readthread = 0;
2622
2623                 vpb_close(p->handle);
2624
2625                 iflist = iflist->next;
2626
2627                 ast_free(p);
2628         }
2629         iflist = NULL;
2630         ast_mutex_unlock(&iflock);
2631
2632         if (bridges) {
2633                 ast_mutex_lock(&bridge_lock);
2634                 for (int i = 0; i < max_bridges; i++) {
2635                         ast_mutex_destroy(&bridges[i].lock);
2636                         ast_cond_destroy(&bridges[i].cond);
2637                 }
2638                 ast_free(bridges);
2639                 bridges = NULL;
2640                 ast_mutex_unlock(&bridge_lock);
2641         }
2642
2643         ao2_cleanup(vpb_tech.capabilities);
2644         vpb_tech.capabilities = NULL;
2645         ao2_cleanup(vpb_tech_indicate.capabilities);
2646         vpb_tech_indicate.capabilities = NULL;
2647         return 0;
2648 }
2649
2650 /*!
2651  * \brief Load the module
2652  *
2653  * Module loading including tests for configuration or dependencies.
2654  * This function can return AST_MODULE_LOAD_FAILURE, AST_MODULE_LOAD_DECLINE,
2655  * or AST_MODULE_LOAD_SUCCESS. If a dependency or environment variable fails
2656  * tests return AST_MODULE_LOAD_FAILURE. If the module can not load the
2657  * configuration file or other non-critical problem return
2658  * AST_MODULE_LOAD_DECLINE. On success return AST_MODULE_LOAD_SUCCESS.
2659  */
2660 static enum ast_module_load_result load_module()
2661 {
2662         struct ast_config *cfg;
2663         struct ast_variable *v;
2664         struct ast_flags config_flags = { 0 };
2665         struct vpb_pvt *tmp;
2666         int board = 0, group = 0;
2667         ast_group_t     callgroup = 0;
2668         ast_group_t     pickupgroup = 0;
2669         int mode = MODE_IMMEDIATE;
2670         float txgain = DEFAULT_GAIN, rxgain = DEFAULT_GAIN;
2671         float txswgain = 0, rxswgain = 0;
2672         int got_gain=0;
2673         int first_channel = 1;
2674         int echo_cancel = DEFAULT_ECHO_CANCEL;
2675         enum ast_module_load_result error = AST_MODULE_LOAD_SUCCESS; /* Error flag */
2676         int bal1 = -1; /* Special value - means do not set */
2677         int bal2 = -1;
2678         int bal3 = -1;
2679         char * callerid = NULL;
2680         int num_cards = 0;
2681
2682         vpb_tech.capabilities = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
2683         if (!vpb_tech.capabilities) {
2684                 return AST_MODULE_LOAD_DECLINE;
2685         }
2686         vpb_tech_indicate.capabilities = ast_format_cap_alloc(AST_FORMAT_CAP_FLAG_DEFAULT);
2687         if (!vpb_tech_indicate.capabilities) {
2688                 return AST_MODULE_LOAD_DECLINE;
2689         }
2690         ast_format_cap_append(vpb_tech.capabilities, ast_format_slin, 0);
2691         ast_format_cap_append(vpb_tech_indicate.capabilities, ast_format_slin, 0);
2692         try {
2693                 num_cards = vpb_get_num_cards();
2694         } catch (std::exception e) {
2695                 ast_log(LOG_ERROR, "No Voicetronix cards detected\n");
2696                 return AST_MODULE_LOAD_DECLINE;
2697         }
2698
2699         int ports_per_card[num_cards];
2700         for (int i = 0; i < num_cards; ++i)
2701                 ports_per_card[i] = vpb_get_ports_per_card(i);
2702
2703         cfg = ast_config_load(config, config_flags);
2704
2705         /* We *must* have a config file otherwise stop immediately */
2706         if (!cfg || cfg == CONFIG_STATUS_FILEINVALID) {
2707                 ast_log(LOG_ERROR, "Unable to load config %s\n", config);
2708                 return AST_MODULE_LOAD_DECLINE;
2709         }
2710
2711         ast_mutex_lock(&iflock);
2712         v = ast_variable_browse(cfg, "general");
2713         while (v){
2714                 if (strcasecmp(v->name, "cards") == 0) {
2715                         ast_log(LOG_NOTICE, "VPB Driver configured to use [%d] cards\n", atoi(v->value));
2716                 } else if (strcasecmp(v->name, "indication") == 0) {
2717                         use_ast_ind = 1;
2718                         ast_log(LOG_NOTICE, "VPB driver using Asterisk Indication functions!\n");
2719                 } else if (strcasecmp(v->name, "break-for-dtmf") == 0) {
2720                         if (ast_true(v->value)) {
2721                                 break_for_dtmf = 1;
2722                         } else {
2723                                 break_for_dtmf = 0;
2724                                 ast_log(LOG_NOTICE, "VPB driver not stopping for DTMF's in native bridge\n");
2725                         }
2726                 } else if (strcasecmp(v->name, "ast-dtmf") == 0) {
2727                         use_ast_dtmf = 1;
2728                         ast_log(LOG_NOTICE, "VPB driver using Asterisk DTMF play functions!\n");
2729                 } else if (strcasecmp(v->name, "ast-dtmf-det") == 0) {
2730                         use_ast_dtmfdet = 1;
2731                         ast_log(LOG_NOTICE, "VPB driver using Asterisk DTMF detection functions!\n");
2732                 } else if (strcasecmp(v->name, "relaxdtmf") == 0) {
2733                         relaxdtmf = 1;
2734                         ast_log(LOG_NOTICE, "VPB driver using Relaxed DTMF with Asterisk DTMF detections functions!\n");
2735                 } else if (strcasecmp(v->name, "timer_period_ring") == 0) {
2736                         timer_period_ring = atoi(v->value);
2737                 } else if (strcasecmp(v->name, "ecsuppthres") == 0) {
2738                         ec_supp_threshold = (short)atoi(v->value);
2739                 } else if (strcasecmp(v->name, "dtmfidd") == 0) {
2740                         dtmf_idd = atoi(v->value);
2741                         ast_log(LOG_NOTICE, "VPB Driver setting DTMF IDD to [%d]ms\n", dtmf_idd);
2742                 }
2743                 v = v->next;
2744         }
2745
2746         v = ast_variable_browse(cfg, "interfaces");
2747         while (v) {
2748                 /* Create the interface list */
2749                 if (strcasecmp(v->name, "board") == 0) {
2750                         board = atoi(v->value);
2751                 } else if (strcasecmp(v->name, "group") == 0) {
2752                         group = atoi(v->value);
2753                 } else if (strcasecmp(v->name, "callgroup") == 0) {
2754                         callgroup = ast_get_group(v->value);
2755                 } else if (strcasecmp(v->name, "pickupgroup") == 0) {
2756                         pickupgroup = ast_get_group(v->value);
2757                 } else if (strcasecmp(v->name, "usepolaritycid") == 0) {
2758                         UsePolarityCID = atoi(v->value);
2759                 } else if (strcasecmp(v->name, "useloopdrop") == 0) {
2760                         UseLoopDrop = atoi(v->value);
2761                 } else if (strcasecmp(v->name, "usenativebridge") == 0) {
2762                         UseNativeBridge = atoi(v->value);
2763                 } else if (strcasecmp(v->name, "channel") == 0) {
2764                         int channel = atoi(v->value);
2765                         if (board >= num_cards || board < 0 || channel < 0 || channel >= ports_per_card[board]) {
2766                                 ast_log(LOG_ERROR, "Invalid board/channel (%d/%d) for channel '%s'\n", board, channel, v->value);
2767                                 error = AST_MODULE_LOAD_FAILURE;
2768                                 goto done;
2769                         }
2770                         tmp = mkif(board, channel, mode, got_gain, txgain, rxgain, txswgain, rxswgain, bal1, bal2, bal3, callerid, echo_cancel,group,callgroup,pickupgroup);
2771                         if (tmp) {
2772                                 if (first_channel) {
2773                                         mkbrd(tmp->vpb_model, echo_cancel);
2774                                         first_channel = 0;
2775                                 }
2776                                 tmp->next = iflist;
2777                                 iflist = tmp;
2778                         } else {
2779                                 ast_log(LOG_ERROR, "Unable to register channel '%s'\n", v->value);
2780                                 error = AST_MODULE_LOAD_FAILURE;
2781                                 goto done;
2782                         }
2783                 } else if (strcasecmp(v->name, "language") == 0) {
2784                         ast_copy_string(language, v->value, sizeof(language));
2785                 } else if (strcasecmp(v->name, "callerid") == 0) {
2786                         callerid = ast_strdup(v->value);
2787                 } else if (strcasecmp(v->name, "mode") == 0) {
2788                         if (strncasecmp(v->value, "di", 2) == 0) {
2789                                 mode = MODE_DIALTONE;
2790                         } else if (strncasecmp(v->value, "im", 2) == 0) {
2791                                 mode = MODE_IMMEDIATE;
2792                         } else if (strncasecmp(v->value, "fx", 2) == 0) {
2793                                 mode = MODE_FXO;
2794                         } else {
2795                                 ast_log(LOG_WARNING, "Unknown mode: %s\n", v->value);
2796                         }
2797                 } else if (!strcasecmp(v->name, "context")) {
2798                         ast_copy_string(context, v->value, sizeof(context));
2799                 } else if (!strcasecmp(v->name, "echocancel")) {
2800                         if (!strcasecmp(v->value, "off")) {
2801                                 echo_cancel = 0;
2802                         }
2803                 } else if (strcasecmp(v->name, "txgain") == 0) {
2804                         txswgain = parse_gain_value(v->name, v->value);
2805                         got_gain |= VPB_GOT_TXSWG;
2806                 } else if (strcasecmp(v->name, "rxgain") == 0) {
2807                         rxswgain = parse_gain_value(v->name, v->value);
2808                         got_gain |= VPB_GOT_RXSWG;
2809                 } else if (strcasecmp(v->name, "txhwgain") == 0) {
2810                         txgain = parse_gain_value(v->name, v->value);
2811                         got_gain |= VPB_GOT_TXHWG;
2812                 } else if (strcasecmp(v->name, "rxhwgain") == 0) {
2813                         rxgain = parse_gain_value(v->name, v->value);
2814                         got_gain |= VPB_GOT_RXHWG;
2815                 } else if (strcasecmp(v->name, "bal1") == 0) {
2816                         bal1 = strtol(v->value, NULL, 16);
2817                         if (bal1 < 0 || bal1 > 255) {
2818                                 ast_log(LOG_WARNING, "Bad bal1 value: %d\n", bal1);
2819                                 bal1 = -1;
2820                         }
2821                 } else if (strcasecmp(v->name, "bal2") == 0) {
2822                         bal2 = strtol(v->value, NULL, 16);
2823                         if (bal2 < 0 || bal2 > 255) {
2824                                 ast_log(LOG_WARNING, "Bad bal2 value: %d\n", bal2);
2825                                 bal2 = -1;
2826                         }
2827                 } else if (strcasecmp(v->name, "bal3") == 0) {
2828                         bal3 = strtol(v->value, NULL, 16);
2829                         if (bal3 < 0 || bal3 > 255) {
2830                                 ast_log(LOG_WARNING, "Bad bal3 value: %d\n", bal3);
2831                                 bal3 = -1;
2832                         }
2833                 } else if (strcasecmp(v->name, "grunttimeout") == 0) {
2834                         gruntdetect_timeout = 1000 * atoi(v->value);
2835                 }
2836                 v = v->next;
2837         }
2838
2839         if (gruntdetect_timeout < 1000)
2840                 gruntdetect_timeout = 1000;
2841
2842         done: (void)0;
2843         ast_mutex_unlock(&iflock);
2844
2845         ast_config_destroy(cfg);
2846
2847         if (use_ast_ind == 1) {
2848                 if (error == AST_MODULE_LOAD_SUCCESS && ast_channel_register(&vpb_tech_indicate) != 0) {
2849                         ast_log(LOG_ERROR, "Unable to register channel class 'vpb'\n");
2850                         error = AST_MODULE_LOAD_FAILURE;
2851                 } else {
2852                         ast_log(LOG_NOTICE, "VPB driver Registered (w/AstIndication)\n");
2853                 }
2854         } else {
2855                 if (error == AST_MODULE_LOAD_SUCCESS && ast_channel_register(&vpb_tech) != 0) {
2856                         ast_log(LOG_ERROR, "Unable to register channel class 'vpb'\n");
2857                         error = AST_MODULE_LOAD_FAILURE;
2858                 } else {
2859                         ast_log(LOG_NOTICE, "VPB driver Registered )\n");
2860                 }
2861         }
2862
2863
2864         if (error != AST_MODULE_LOAD_SUCCESS)
2865                 unload_module();
2866         else
2867                 restart_monitor(); /* And start the monitor for the first time */
2868
2869         return error;
2870 }
2871
2872 /**/
2873 #if defined(__cplusplus) || defined(c_plusplus)
2874  }
2875 #endif
2876 /**/
2877
2878 AST_MODULE_INFO_STANDARD_DEPRECATED(ASTERISK_GPL_KEY, "Voicetronix API driver");