channels/chan_vpb.c

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