port.cpp

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** PBX4Linux                                                                 **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** port                                                                      **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 /* HOW TO audio?
  13
  14 Audio flow has two ways:
  15
  16 * from channel to the upper layer
  17   -> sound from mISDN channel
  18   -> announcement from vbox channel
  19
  20 * from the upper layer to the channel
  21   -> sound from remote channel
  22
  23 Audio is required:
  24
  25   -> if local or remote channel is not mISDN
  26   -> if call is recorded (vbox)
  27
  28
  29 Functions:
  30
  31 * PmISDN::txfromup
  32   -> audio from upper layer is buffered for later transmission to channel
  33 * PmISDN::handler
  34   -> buffered audio from upper layer or tones are transmitted via system clock
  35 * mISDN_handler
  36   -> rx-data from port to record() and upper layer
  37   -> tx-data from port (dsp) to record()
  38 * VboxPort::handler
  39   -> streaming announcement to upper layer
  40   -> recording announcement
  41 * VboxPort::message_epoint
  42   -> recording audio message from upper layer
  43
  44
  45
  46 */
  47
  48 #include <stdio.h>
  49 #include <string.h>
  50 #include <stdlib.h>
  51 #include <sys/types.h>
  52 #include <sys/stat.h>
  53 #include <fcntl.h>
  54 #include <unistd.h>
  55 #include <errno.h>
  56 #include "main.h"
  57
  58 #define SHORT_MIN -32768
  59 #define SHORT_MAX 32767
  60
  61 class Port *port_first = NULL;
  62
  63 unsigned long port_serial = 1; /* must be 1, because 0== no port */
  64
  65
  66 /* free epointlist relation
  67  */
  68 void Port::free_epointlist(struct epoint_list *epointlist)
  69 {
  70         struct epoint_list *temp, **tempp;
  71
  72         temp = p_epointlist;
  73         tempp = &p_epointlist;
  74         while(temp)
  75         {
  76                 if (temp == epointlist)
  77                         break;
  78
  79                 tempp = &temp->next;
  80                 temp = temp->next;
  81         }
  82         if (temp == 0)
  83         {
  84                 PERROR("SOFTWARE ERROR: epointlist not in port's list.\n");
  85                 return;
  86         }
  87         /* detach */
  88         *tempp=temp->next;
  89
  90         /* free */
  91         PDEBUG(DEBUG_EPOINT, "PORT(%d) removed epoint from port\n", p_serial);
  92         FREE(temp, sizeof(struct epoint_list));
  93         ememuse--;
  94 }
  95
  96
  97 void Port::free_epointid(unsigned long epoint_id)
  98 {
  99         struct epoint_list *temp, **tempp;
 100
 101         temp = p_epointlist;
 102         tempp = &p_epointlist;
 103         while(temp)
 104         {
 105                 if (temp->epoint_id == epoint_id)
 106                         break;
 107
 108                 tempp = &temp->next;
 109                 temp = temp->next;
 110         }
 111         if (temp == 0)
 112         {
 113                 PERROR("epoint_id not in port's list.\n");
 114                 return;
 115         }
 116         /* detach */
 117         *tempp=temp->next;
 118
 119         /* free */
 120         PDEBUG(DEBUG_EPOINT, "PORT(%d) removed epoint from port\n", p_serial);
 121         FREE(temp, sizeof(struct epoint_list));
 122         ememuse--;
 123 }
 124
 125
 126 /* create new epointlist relation
 127  */
 128 struct epoint_list *Port::epointlist_new(unsigned long epoint_id)
 129 {
 130         struct epoint_list *epointlist, **epointlistpointer;
 131
 132         /* epointlist structure */
 133         epointlist = (struct epoint_list *)MALLOC(sizeof(struct epoint_list));
 134         if (!epointlist)
 135                 FATAL("No memory for epointlist\n");
 136         ememuse++;
 137         PDEBUG(DEBUG_EPOINT, "PORT(%d) allocating epoint_list.\n", p_serial);
 138
 139         /* add epoint_list to chain */
 140         epointlist->next = NULL;
 141         epointlistpointer = &p_epointlist;
 142         while(*epointlistpointer)
 143                 epointlistpointer = &((*epointlistpointer)->next);
 144         *epointlistpointer = epointlist;
 145
 146         /* link to epoint */
 147         epointlist->epoint_id = epoint_id;
 148         epointlist->active = 1;
 149
 150         return(epointlist);
 151 }
 152
 153
 154 /*
 155  * port constructor
 156  */
 157 Port::Port(int type, char *portname, struct port_settings *settings)
 158 {
 159         class Port *temp, **tempp;
 160
 161         PDEBUG(DEBUG_PORT, "new port of type %d, name '%s'\n", type, portname);
 162
 163         /* initialize object */
 164         if (settings)
 165                 memcpy(&p_settings, settings, sizeof(struct port_settings));
 166         else
 167         {
 168                 memset(&p_settings, 0, sizeof(p_settings));
 169                 SCPY(p_settings.tones_dir, options.tones_dir);
 170         }
 171         SCPY(p_name, portname);
 172         SCPY(p_tone_dir, p_settings.tones_dir); // just to be sure
 173         p_type = type;
 174         p_serial = port_serial++;
 175         p_tone_fh = -1;
 176         p_tone_fetched = NULL;
 177         p_tone_name[0] = '\0';
 178         p_state = PORT_STATE_IDLE;
 179         p_epointlist = NULL;
 180         memset(&p_callerinfo, 0, sizeof(p_callerinfo));
 181         memset(&p_dialinginfo, 0, sizeof(p_dialinginfo));
 182         memset(&p_connectinfo, 0, sizeof(p_connectinfo));
 183         memset(&p_redirinfo, 0, sizeof(p_redirinfo));
 184         memset(&p_capainfo, 0, sizeof(p_capainfo));
 185         p_echotest = 0;
 186
 187         /* call recording */
 188         p_record = NULL;
 189         p_record_type = 0;
 190         p_record_length = 0;
 191         p_record_skip = 0;
 192         p_record_filename[0] = '\0';
 193         p_record_buffer_readp = 0;
 194         p_record_buffer_writep = 0;
 195         p_record_buffer_dir = 0;
 196
 197         /* append port to chain */
 198         next = NULL;
 199         temp = port_first;
 200         tempp = &port_first;
 201         while(temp)
 202         {
 203                 tempp = &temp->next;
 204                 temp = temp->next;
 205         }
 206         *tempp = this;
 207
 208         classuse++;
 209 }
 210
 211
 212 /*
 213  * port destructor
 214  */
 215 Port::~Port(void)
 216 {
 217         class Port *temp, **tempp;
 218         struct message *message;
 219
 220         if (p_record)
 221                 close_record(0);
 222
 223         classuse--;
 224
 225         PDEBUG(DEBUG_PORT, "removing port of type %d, name '%s'\n", p_type, p_name);
 226
 227         /* disconnect port from endpoint */
 228         while(p_epointlist)
 229         {
 230                 /* send disconnect */
 231                 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 232                 message->param.disconnectinfo.cause = 16;
 233                 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 234                 message_put(message);
 235                 /* remove endpoint */
 236                 free_epointlist(p_epointlist);
 237         }
 238
 239         /* remove port from chain */
 240         temp=port_first;
 241         tempp=&port_first;
 242         while(temp)
 243         {
 244                 if (temp == this)
 245                         break;
 246                 tempp = &temp->next;
 247                 temp = temp->next;
 248         }
 249         if (temp == NULL)
 250                 FATAL("PORT(%s) port not in port's list.\n", p_name);
 251         /* detach */
 252         *tempp=this->next;
 253
 254         /* close open tones file */
 255         if (p_tone_fh >= 0)
 256         {
 257                 close(p_tone_fh);
 258                 p_tone_fh = -1;
 259                 fhuse--;
 260         }
 261         p_tone_fetched = NULL;
 262 }
 263
 264 PORT_STATE_NAMES
 265
 266 /* set new endpoint state
 267  */
 268 void Port::new_state(int state)
 269 {
 270         PDEBUG(DEBUG_PORT, "PORT(%s) new state %s --> %s\n", p_name, state_name[p_state], state_name[state]);
 271         p_state = state;
 272 }
 273
 274
 275 /*
 276  * find the port with port_id
 277  */
 278 class Port *find_port_id(unsigned long port_id)
 279 {
 280         class Port *port = port_first;
 281
 282         while(port)
 283         {
 284 //printf("comparing: '%s' with '%s'\n", name, port->name);
 285                 if (port->p_serial == port_id)
 286                         return(port);
 287                 port = port->next;
 288         }
 289
 290         return(NULL);
 291 }
 292
 293
 294 /*
 295  * set echotest
 296  */
 297 void Port::set_echotest(int echotest)
 298 {
 299         p_echotest = echotest;
 300 }
 301
 302
 303 /*
 304  * set the file in the tone directory with the given name
 305  */
 306 void Port::set_tone(char *dir, char *name)
 307 {
 308         int fh;
 309         char filename[128];
 310
 311         if (name == NULL)
 312                 name = "";
 313
 314         /* no counter, no eof, normal speed */
 315         p_tone_counter = 0;
 316         p_tone_eof = 0;
 317         p_tone_speed = 1;
 318         p_tone_codec = CODEC_LAW;
 319
 320         if (p_tone_fh >= 0)
 321         {
 322                 close(p_tone_fh);
 323                 p_tone_fh = -1;
 324                 fhuse--;
 325         }
 326         p_tone_fetched = NULL;
 327
 328         if (name[0])
 329         {
 330                 if (name[0] == '/')
 331                 {
 332                         SPRINT(p_tone_name, "%s", name);
 333                         p_tone_dir[0] = '\0';
 334                 } else
 335                 {
 336                         SCPY(p_tone_dir, dir);
 337                         SCPY(p_tone_name, name);
 338                 }
 339         } else
 340         {
 341                 p_tone_name[0]= '\0';
 342                 p_tone_dir[0]= '\0';
 343                 return;
 344         }
 345
 346         if (!!strncmp(name,"cause_",6))
 347                 return;
 348
 349         /* now we check if the cause exists, otherwhise we use error tone. */
 350         if ((p_tone_fetched=open_tone_fetched(p_tone_dir, p_tone_name, &p_tone_codec, 0, 0)))
 351         {
 352                 p_tone_fetched = NULL;
 353                 return;
 354         }
 355         SPRINT(filename, "%s_loop", p_tone_name);
 356         if ((p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, 0, 0)))
 357         {
 358                 p_tone_fetched = NULL;
 359                 return;
 360         }
 361         SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 362         if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
 363         {
 364                 close(fh);
 365                 return;
 366         }
 367         SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
 368         if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
 369         {
 370                 close(fh);
 371                 return;
 372         }
 373
 374         if (!strcmp(name,"cause_00") || !strcmp(name,"cause_10"))
 375         {
 376                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using release tone\n", p_name, name+6);
 377                 SPRINT(p_tone_name,"release");
 378         } else
 379         if (!strcmp(name,"cause_11"))
 380         {
 381                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using busy tone\n", p_name, name+6);
 382                 SPRINT(p_tone_name,"busy");
 383         } else
 384         {
 385                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using error tone\n", p_name, name+6);
 386                 SPRINT(p_tone_name,"error");
 387         }
 388 }
 389
 390
 391 /*
 392  * set the file in the tone directory for vbox playback
 393  * also set the play_eof-flag
 394  */
 395 void Port::set_vbox_tone(char *dir, char *name)
 396 {
 397         char filename[256];
 398
 399         p_tone_speed = 1;
 400         p_tone_counter = 0;
 401         p_tone_codec = CODEC_LAW;
 402         p_tone_eof = 1;
 403
 404         if (p_tone_fh >= 0)
 405         {
 406                 close(p_tone_fh);
 407                 p_tone_fh = -1;
 408                 fhuse--;
 409         }
 410         p_tone_fetched = NULL;
 411
 412         SPRINT(p_tone_dir,  dir);
 413         SPRINT(p_tone_name,  name);
 414
 415         /* now we check if the cause exists, otherwhise we use error tone. */
 416         if (p_tone_dir[0])
 417         {
 418                 if ((p_tone_fetched=open_tone_fetched(p_tone_dir, p_tone_name, &p_tone_codec, &p_tone_size, &p_tone_left)))
 419                 {
 420                         PDEBUG(DEBUG_PORT, "PORT(%s) opening fetched tone: %s\n", p_name, p_tone_name);
 421                         return;
 422                 }
 423                 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 424                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) >= 0)
 425                 {
 426                         fhuse++;
 427                         PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
 428                         return;
 429                 }
 430         } else
 431         {
 432                 SPRINT(filename, "%s", p_tone_name);
 433                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) >= 0)
 434                 {
 435                         fhuse++;
 436                         PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
 437                         return;
 438                 }
 439         }
 440 }
 441
 442
 443 /*
 444  * set the file in the given directory for vbox playback
 445  * also set the eof-flag
 446  * also set the counter-flag
 447  */
 448 void Port::set_vbox_play(char *name, int offset)
 449 {
 450         signed long size;
 451         struct message *message;
 452
 453         /* use ser_box_tone() */
 454         set_vbox_tone("", name);
 455         if (p_tone_fh < 0)
 456                 return;
 457
 458         /* enable counter */
 459         p_tone_counter = 1;
 460
 461         /* seek */
 462         if (p_tone_name[0])
 463         {
 464                 /* send message with counter value */
 465                 if (p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 466                 {
 467                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 468                         message->param.counter.current = offset;
 469                         message->param.counter.max = size;
 470                         message_put(message);
 471                 }
 472         }
 473 }
 474
 475
 476 /*
 477  * set the playback speed (for recording playback with different speeds)
 478  */
 479 void Port::set_vbox_speed(int speed)
 480 {
 481         /* enable vbox play mode */
 482         p_tone_speed = speed;
 483 }
 484
 485 /*
 486  * read from the given file as specified in port_set_tone and return sample data
 487  * if the tone ends, the result may be less samples than requested
 488  */
 489 int Port::read_audio(unsigned char *buffer, int length)
 490 {
 491         int l,len;
 492         int nodata=0; /* to detect 0-length files and avoid endless reopen */
 493         char filename[128];
 494         int tone_left_before; /* temp variable to determine the change in p_tone_left */
 495
 496         /* nothing */
 497         if (length == 0)
 498                 return(0);
 499
 500         len = length;
 501
 502         /* if there is no tone set, use silence */
 503         if (!p_tone_name[0])
 504                 return(0);
 505
 506         /* if the file pointer is not open, we open it */
 507         if (p_tone_fh<0 && p_tone_fetched==NULL)
 508         {
 509                 if (p_tone_dir[0])
 510                 {
 511                         SPRINT(filename, "%s", p_tone_name);
 512                         /* if file does not exist */
 513                         if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 514                         {
 515                                 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 516                                 /* if file does not exist */
 517                                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 518                                 {
 519                                         PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 520                                         goto try_loop;
 521                                 }
 522                                 fhuse++;
 523                         }
 524                 } else
 525                 {
 526                         SPRINT(filename, "%s", p_tone_name);
 527                         /* if file does not exist */
 528                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 529                         {
 530                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 531                                 goto try_loop;
 532                         }
 533                         fhuse++;
 534                 }
 535                 PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 536         }
 537
 538 read_more:
 539         /* file descriptor is open read data */
 540         tone_left_before = p_tone_left;
 541         if (p_tone_fh >= 0)
 542         {
 543                 l = read_tone(p_tone_fh, buffer, p_tone_codec, len, p_tone_size, &p_tone_left, p_tone_speed);
 544                 if (l<0 || l>len) /* paranoia */
 545                         l=0;
 546                 buffer += l;
 547                 len -= l;
 548         }
 549         if (p_tone_fetched)
 550         {
 551                 l = read_tone_fetched(&p_tone_fetched, buffer, len, p_tone_size, &p_tone_left, p_tone_speed);
 552                 if (l<0 || l>len) /* paranoia */
 553                         l=0;
 554                 buffer += l;
 555                 len -= l;
 556         }
 557
 558         /* if counter is enabled, we check if we have a change */
 559         if (p_tone_counter && p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 560         {
 561                 /* if we jumed to the next second */
 562                 if (((p_tone_size-p_tone_left)/8000) != (p_tone_size-tone_left_before)/8000)
 563                 {
 564 //printf("\nsize=%d left=%d\n\n",p_tone_size,p_tone_left);
 565                         struct message *message;
 566                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 567                         message->param.counter.current = (p_tone_size-p_tone_left)/8000;
 568                         message->param.counter.max = -1;
 569                         message_put(message);
 570                 }
 571         }
 572
 573         if (len==0)
 574                 return(length-len);
 575
 576         if (p_tone_fh >= 0)
 577         {
 578                 close(p_tone_fh);
 579                 p_tone_fh = -1;
 580                 fhuse--;
 581         }
 582         p_tone_fetched = NULL;
 583
 584         if (l)
 585                 nodata=0;
 586
 587         /* if the file has 0-length */
 588         if (nodata>1)
 589         {
 590                 PDEBUG(DEBUG_PORT, "PORT(%s) 0-length loop: %s\n", p_name, filename);
 591                 p_tone_name[0]=0;
 592                 p_tone_dir[0]=0;
 593                 return(length-len);
 594         }
 595
 596         /* if eof is reached, or if the normal file cannot be opened, continue with the loop file if possible */
 597 try_loop:
 598         if (p_tone_eof && ACTIVE_EPOINT(p_epointlist))
 599         {
 600                 struct message *message;
 601                 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_EOF);
 602                 message_put(message);
 603         }
 604
 605         if (p_tone_dir[0])
 606         {
 607                 /* if file does not exist */
 608                 SPRINT(filename, "%s_loop", p_tone_name);
 609                 if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 610                 {
 611                         SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
 612                         /* if file does not exist */
 613                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 614                         {
 615                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
 616                                 p_tone_dir[0] = '\0';
 617                                 p_tone_name[0] = '\0';
 618                                 return(length-len);
 619                         }
 620                         fhuse++;
 621                 }
 622         } else
 623         {
 624                 SPRINT(filename, "%s_loop", p_tone_name);
 625                 /* if file does not exist */
 626                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 627                 {
 628                         PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
 629                         p_tone_dir[0] = '\0';
 630                         p_tone_name[0] = '\0';
 631                         return(length-len);
 632                 }
 633                 fhuse++;
 634         }
 635         nodata++;
 636         PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 637
 638         /* now we have opened the loop */
 639         goto read_more;
 640 }
 641
 642
 643 /* port handler:
 644  * process transmission clock */
 645 int Port::handler(void)
 646 {
 647         return(0);
 648 }
 649
 650 /* endpoint sends messages to the port
 651  * this is called by the message_epoint inherited by child classes
 652  * therefor a return=1 means: stop, no more processing
 653  */
 654 //extern struct message *dddebug;
 655 int Port::message_epoint(unsigned long epoint_id, int message_id, union parameter *param)
 656 {
 657         /* check if we got audio data from one remote port */
 658         switch(message_id)
 659         {
 660                 case MESSAGE_TONE: /* play tone */
 661                 PDEBUG(DEBUG_PORT, "PORT(%s) isdn port with (caller id %s) setting tone '%s' dir '%s'\n", p_name, p_callerinfo.id, param->tone.name, param->tone.dir);
 662                 set_tone(param->tone.dir,param->tone.name);
 663                 return(1);
 664
 665                 case MESSAGE_VBOX_TONE: /* play tone of answering machine */
 666                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine tone '%s' '%s'\n", p_name, param->tone.dir, param->tone.name);
 667                 set_vbox_tone(param->tone.dir, param->tone.name);
 668                 return(1);
 669
 670                 case MESSAGE_VBOX_PLAY: /* play recording of answering machine */
 671                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine file to play '%s' (offset %d seconds)\n", p_name, param->play.file, param->play.offset);
 672                 set_vbox_play(param->play.file, param->play.offset);
 673                 return(1);
 674
 675                 case MESSAGE_VBOX_PLAY_SPEED: /* set speed of playback (recording of answering machine) */
 676                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine playback speed %d (times)\n", p_name, param->speed);
 677                 set_vbox_speed(param->speed);
 678                 return(1);
 679
 680         }
 681
 682         return(0);
 683 }
 684
 685
 686 /* wave header structure */
 687 struct fmt {
 688         unsigned short  stereo; /* 1 = mono, 2 = stereo */
 689         unsigned short  channels; /* number of channels */
 690         unsigned long   sample_rate; /* sample rate */
 691         unsigned long   data_rate; /* data rate */
 692         unsigned short  bytes_sample; /* bytes per sample (all channels) */
 693         unsigned short  bits_sample; /* bits per sample (one channel) */
 694 };
 695
 696
 697 /*
 698  * open record file (actually a wave file with empty header which will be
 699  * written before close, because we do not know the size yet)
 700  * type=1 record annoucement,  type=0 record audio stream, type=2 record vbox
 701  */
 702 int Port::open_record(int type, int vbox, int skip, char *extension, int anon_ignore, char *vbox_email, int vbox_email_file)
 703 {
 704         /* RIFFxxxxWAVEfmt xxxx(fmt-size)dataxxxx... */
 705         char dummyheader[8+4+8+sizeof(fmt)+8];
 706         char filename[256];
 707
 708         if (!extension)
 709         {
 710                 PERROR("Port(%d) not an extension\n", p_serial);
 711                 return(0);
 712         }
 713         SCPY(p_record_extension, extension);
 714         p_record_anon_ignore = anon_ignore;
 715         SCPY(p_record_vbox_email, vbox_email);
 716         p_record_vbox_email_file = vbox_email_file;
 717
 718         if (p_record)
 719         {
 720                 PERROR("Port(%d) already recording\n", p_serial);
 721                 return(0);
 722         }
 723
 724         if (vbox != 0)
 725                 SPRINT(filename, "%s/%s/%s/vbox", INSTALL_DATA, options.extensions_dir, p_record_extension);
 726         else
 727                 SPRINT(filename, "%s/%s/%s/recordings", INSTALL_DATA, options.extensions_dir, p_record_extension);
 728         if (mkdir(filename, 0755) < 0)
 729         {
 730                 if (errno != EEXIST)
 731                 {
 732                         PERROR("Port(%d) cannot create directory '%s'\n", p_serial, filename);
 733                         return(0);
 734                 }
 735         }
 736
 737         if (vbox == 1)
 738                 UPRINT(strchr(filename,'\0'), "/announcement");
 739         else
 740                 UPRINT(strchr(filename,'\0'), "/%04d-%02d-%02d_%02d%02d%02d", now_tm->tm_year+1900, now_tm->tm_mon+1, now_tm->tm_mday, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
 741         if (vbox == 2)
 742         {
 743                 p_record_vbox_year = now_tm->tm_year;
 744                 p_record_vbox_mon = now_tm->tm_mon;
 745                 p_record_vbox_mday = now_tm->tm_mday;
 746                 p_record_vbox_hour = now_tm->tm_hour;
 747                 p_record_vbox_min = now_tm->tm_min;
 748         }
 749
 750         /* check, if file exists (especially when an extension calls the same extension) */
 751         if (vbox != 1)
 752         if ((p_record = fopen(filename, "r")))
 753         {
 754                 fclose(p_record);
 755                 SCAT(filename, "_2nd");
 756         }
 757
 758         p_record = fopen(filename, "w");
 759         if (!p_record)
 760         {
 761                 PERROR("Port(%d) cannot record because file cannot be opened '%s'\n", p_serial, filename);
 762                 return(0);
 763         }
 764         fduse++;
 765
 766         p_record_type = type;
 767         p_record_vbox = vbox;
 768         p_record_skip = skip;
 769         p_record_length = 0;
 770         switch(p_record_type)
 771         {
 772                 case CODEC_MONO:
 773                 case CODEC_STEREO:
 774                 case CODEC_8BIT:
 775                 fwrite(dummyheader, sizeof(dummyheader), 1, p_record);
 776                 break;
 777
 778                 case CODEC_LAW:
 779                 break;
 780         }
 781         UCPY(p_record_filename, filename);
 782
 783         PDEBUG(DEBUG_PORT, "Port(%d) recording started with file name '%s'\n", p_serial, filename);
 784         return(1);
 785 }
 786
 787
 788 /*
 789  * close the recoding file, put header in front and rename
 790  */
 791 void Port::close_record(int beep)
 792 {
 793         static signed long beep_mono[] = {-10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000};
 794         static unsigned char beep_8bit[] = {48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208, 48, 208};
 795         unsigned long size, wsize;
 796         struct fmt fmt;
 797         char filename[512], indexname[512];
 798         FILE *fp;
 799         int i, ii;
 800         char number[256], callerid[256];
 801         char *p;
 802         struct caller_info callerinfo;
 803         char *valid_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_.-!$%&/()=+*;~";
 804
 805         if (!p_record)
 806                 return;
 807         PDEBUG(DEBUG_PORT, "data still in record buffer: %d (dir %d)\n", (p_record_buffer_writep - p_record_buffer_readp) & RECORD_BUFFER_MASK, p_record_buffer_dir);
 808
 809         memcpy(&callerinfo, &p_callerinfo, sizeof(struct caller_info));
 810 //      apply_callerid_restriction(p_record_anon_ignore, callerinfo.id, &callerinfo.ntype, &callerinfo.present, &callerinfo.screen, callerinfo.extension, callerinfo.name);
 811
 812         SCPY(number, p_dialinginfo.id);
 813         SCPY(callerid, numberrize_callerinfo(callerinfo.id, callerinfo.ntype));
 814         if (callerid[0] == '\0')
 815         {
 816                 if (callerinfo.present == INFO_PRESENT_RESTRICTED)
 817                         UCPY(callerid,"anonymous");
 818                 else
 819                         UCPY(callerid,"unknown");
 820         }
 821
 822         /* change verboten digits */
 823         p = callerid;
 824         while((p=strchr(p,'*')))
 825                 *(p++) = 'x';
 826         p = callerid;
 827         while((p=strchr(p,'/')))
 828                 *(p++) = 'x';
 829         p = number;
 830         while((p=strchr(p,'*')))
 831                 *(p++) = 'x';
 832         p = number;
 833         while((p=strchr(p,'/')))
 834                 *(p++) = 'x';
 835         i = 0;
 836         ii = strlen(callerid);
 837         while(i < ii)
 838         {
 839                 if (!strchr(valid_chars, callerid[i]))
 840                         callerid[i] = '_';
 841                 i++;
 842         }
 843         i = 0;
 844         ii = strlen(number);
 845         while(i < ii)
 846         {
 847                 if (!strchr(valid_chars, number[i]))
 848                         number[i] = '_';
 849                 i++;
 850         }
 851
 852         /* add beep to the end of recording */
 853         if (beep)
 854         switch(p_record_type)
 855         {
 856                 case CODEC_MONO:
 857                 i = 0;
 858                 while(i < beep)
 859                 {
 860                         fwrite(beep_mono, sizeof(beep_mono), 1, p_record);
 861                         i += sizeof(beep_mono);
 862                         p_record_length += sizeof(beep_mono);
 863                 }
 864                 break;
 865                 case CODEC_8BIT:
 866                 i = 0;
 867                 while(i < beep)
 868                 {
 869                         fwrite(beep_8bit, sizeof(beep_8bit), 1, p_record);
 870                         i += sizeof(beep_8bit);
 871                         p_record_length += sizeof(beep_8bit);
 872                 }
 873                 break;
 874 #if 0
 875                 case CODEC_LAW:
 876                 i = 0;
 877                 while(i < beep)
 878                 {
 879                         fwrite(beep_law, sizeof(beep_law), 1, p_record);
 880                         i += sizeof(beep_law);
 881                         p_record_length += sizeof(beep_law);
 882                 }
 883                 break;
 884 #endif
 885                 default:
 886                 PERROR("codec %d not supported for beep adding\n", p_record_type);
 887         }
 888
 889         /* complete header */
 890         switch(p_record_type)
 891         {
 892                 case CODEC_MONO:
 893                 case CODEC_STEREO:
 894                 case CODEC_8BIT:
 895                 /* cue */
 896                 fprintf(p_record, "cue %c%c%c%c%c%c%c%c", 4, 0, 0, 0, 0,0,0,0);
 897
 898                 /* LIST */
 899                 fprintf(p_record, "LIST%c%c%c%cadtl", 4, 0, 0, 0);
 900
 901                 /* go to header */
 902                 fseek(p_record, 0, SEEK_SET);
 903
 904                 /* WAVEfmt xxxx(fmt-size)dataxxxx[data]cue xxxx0000LISTxxxxadtl*/
 905                 size = p_record_length;
 906                 wsize = 4+8+sizeof(fmt)+8+size+8+4+8+4;
 907
 908                 /* RIFF */
 909                 fprintf(p_record, "RIFF%c%c%c%c", (unsigned char)(wsize&0xff), (unsigned char)((wsize>>8)&0xff), (unsigned char)((wsize>>16)&0xff), (unsigned char)(wsize>>24));
 910
 911                 /* WAVE */
 912                 fprintf(p_record, "WAVE");
 913
 914                 /* fmt */
 915                 fprintf(p_record, "fmt %c%c%c%c", sizeof(fmt), 0, 0, 0);
 916                 switch(p_record_type)
 917                 {
 918                         case CODEC_MONO:
 919                         fmt.stereo = 1;
 920                         fmt.channels = 1;
 921                         fmt.sample_rate = 8000; /* samples/sec */
 922                         fmt.data_rate = 16000; /* full data rate */
 923                         fmt.bytes_sample = 2; /* all channels */
 924                         fmt.bits_sample = 16; /* one channel */
 925                         break;
 926
 927                         case CODEC_STEREO:
 928                         fmt.stereo = 1;
 929                         fmt.channels = 2;
 930                         fmt.sample_rate = 8000; /* samples/sec */
 931                         fmt.data_rate = 32000; /* full data rate */
 932                         fmt.bytes_sample = 4; /* all channels */
 933                         fmt.bits_sample = 16; /* one channel */
 934                         break;
 935
 936                         case CODEC_8BIT:
 937                         fmt.stereo = 1;
 938                         fmt.channels = 1;
 939                         fmt.sample_rate = 8000; /* samples/sec */
 940                         fmt.data_rate = 8000; /* full data rate */
 941                         fmt.bytes_sample = 1; /* all channels */
 942                         fmt.bits_sample = 8; /* one channel */
 943                         break;
 944                 }
 945                 fwrite(&fmt, sizeof(fmt), 1, p_record);
 946
 947                 /* data */
 948                 fprintf(p_record, "data%c%c%c%c", (unsigned char)(size&0xff), (unsigned char)((size>>8)&0xff), (unsigned char)((size>>16)&0xff), (unsigned char)(size>>24));
 949
 950                 /* rename file */
 951                 if (p_record_vbox == 1)
 952                         SPRINT(filename, "%s.wav", p_record_filename);
 953                 else
 954                         SPRINT(filename, "%s_%s-%s.wav", p_record_filename, callerid, number);
 955                 break;
 956
 957                 case CODEC_LAW:
 958                 /* rename file */
 959                 if (p_record_vbox == 1)
 960                         SPRINT(filename, "%s.isdn", p_record_filename);
 961                 else
 962                         SPRINT(filename, "%s_%s-%s.isdn", p_record_filename, callerid, number);
 963                 break;
 964         }
 965
 966         fclose(p_record);
 967         fduse--;
 968         p_record = NULL;
 969
 970         if (rename(p_record_filename, filename) < 0)
 971         {
 972                 PERROR("Port(%d) cannot rename from '%s' to '%s'\n", p_serial, p_record_filename, filename);
 973                 return;
 974         }
 975
 976         PDEBUG(DEBUG_PORT, "Port(%d) recording is written and renamed to '%s' and must have the following size:%lu raw:%lu samples:%lu\n", p_serial, filename, wsize+8, size, size>>1);
 977
 978         if (p_record_vbox == 2)
 979         {
 980                 SPRINT(indexname, "%s/%s/%s/vbox/index", INSTALL_DATA, options.extensions_dir, p_record_extension);
 981                 if ((fp = fopen(indexname,"a")))
 982                 {
 983                         fduse++;
 984
 985                         /* remove path from file name */
 986                         p = filename;
 987                         while(strchr(p, '/'))
 988                                 p = strchr(p, '/')+1;
 989                         fprintf(fp, "%s %d %d %d %d %d %s\n", p, p_record_vbox_year, p_record_vbox_mon, p_record_vbox_mday, p_record_vbox_hour, p_record_vbox_min, callerid);
 990
 991                         fclose(fp);
 992                         fduse--;
 993                 } else
 994                 {
 995                         PERROR("Port(%d) cannot open index file '%s' to append.\n", p_serial, indexname);
 996                 }
 997
 998                 /* send email with sample*/
 999                 if (p_record_vbox_email[0])
1000                 {
1001                         send_mail(p_record_vbox_email_file?filename:(char *)"", callerid, callerinfo.extension, callerinfo.name, p_record_vbox_email, p_record_vbox_year, p_record_vbox_mon, p_record_vbox_mday, p_record_vbox_hour, p_record_vbox_min, p_record_extension);
1002                 }
1003         }
1004 }
1005
1006
1007 /*
1008  * recording function
1009  * Records all data from down and from up into one single stream.
1010  * Both streams may have gaps or jitter.
1011  * A Jitter buffer for both streams is used to compensate jitter.
1012  *
1013  * If one stream (dir) received packets, they are stored to a
1014  * buffer to wait for the other stream (dir), so both streams can
1015  * be combined. If the buffer is full, it's content is written
1016  * without mixing stream. (assuming only one stram (dir) exists.)
1017  * A flag is used to indicate what stream is currently in buffer.
1018  *
1019  * NOTE: First stereo sample (odd) is from down, second is from up.
1020  */
1021 void Port::record(unsigned char *data, int length, int dir_fromup)
1022 {
1023         unsigned char write_buffer[1024], *d;
1024         signed short *s;
1025         int free, i, ii;
1026         signed long sample;
1027
1028         /* no recording */
1029         if (!p_record || !length)
1030                 return;
1031
1032         /* skip data from local caller (dtmf input) */
1033         if (p_record_skip && !dir_fromup)
1034         {
1035                 /* more to skip than we have */
1036                 if (p_record_skip > length)
1037                 {
1038                         p_record_skip -= length;
1039                         return;
1040                 }
1041                 /* less to skip */
1042                 data += p_record_skip;
1043                 length -= p_record_skip;
1044                 p_record_skip = 0;
1045         }
1046
1047 //printf("dir=%d len=%d\n", dir_fromup, length);
1048
1049         free = ((p_record_buffer_readp - p_record_buffer_writep - 1) & RECORD_BUFFER_MASK);
1050
1051 //PDEBUG(DEBUG_PORT, "record(data,%d,%d): free=%d, p_record_buffer_dir=%d, p_record_buffer_readp=%d, p_record_buffer_writep=%d.\n", length, dir_fromup, free, p_record_buffer_dir, p_record_buffer_readp, p_record_buffer_writep);
1052
1053         /* the buffer stores the same data stream */
1054         if (dir_fromup == p_record_buffer_dir)
1055         {
1056 same_again:
1057
1058 //printf("same free=%d length=%d\n", free, length);
1059                 /* first write what we can to the buffer */
1060                 while(free && length)
1061                 {
1062                         p_record_buffer[p_record_buffer_writep] = audio_law_to_s32[*data++];
1063                         p_record_buffer_writep = (p_record_buffer_writep + 1) & RECORD_BUFFER_MASK;
1064                         free--;
1065                         length--;
1066                 }
1067                 /* all written, so we return */
1068                 if (!length)
1069                         return;
1070                 /* still data left, buffer is full, so we need to write a chunk to file */
1071                 switch(p_record_type)
1072                 {
1073                         case CODEC_MONO:
1074                         s = (signed short *)write_buffer;
1075                         i = 0;
1076                         while(i < 256)
1077                         {
1078                                 *s++ = p_record_buffer[p_record_buffer_readp];
1079                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1080                                 i++;
1081                         }
1082                         fwrite(write_buffer, 512, 1, p_record);
1083                         p_record_length += 512;
1084                         break;
1085
1086                         case CODEC_STEREO:
1087                         s = (signed short *)write_buffer;
1088                         if (p_record_buffer_dir)
1089                         {
1090                                 i = 0;
1091                                 while(i < 256)
1092                                 {
1093                                         *s++ = 0; /* nothing from down */
1094                                         *s++ = p_record_buffer[p_record_buffer_readp];
1095                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1096                                         i++;
1097                                 }
1098                         } else
1099                         {
1100                                 i = 0;
1101                                 while(i < 256)
1102                                 {
1103                                         *s++ = p_record_buffer[p_record_buffer_readp];
1104                                         *s++ = 0; /* nothing from up */
1105                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1106                                         i++;
1107                                 }
1108                         }
1109                         fwrite(write_buffer, 1024, 1, p_record);
1110                         p_record_length += 1024;
1111                         break;
1112
1113                         case CODEC_8BIT:
1114                         d = write_buffer;
1115                         i = 0;
1116                         while(i < 256)
1117                         {
1118                                 *d++ = ((unsigned short)(p_record_buffer[p_record_buffer_readp]+0x8000)) >> 8;
1119                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1120                                 i++;
1121                         }
1122                         fwrite(write_buffer, 512, 1, p_record);
1123                         p_record_length += 512;
1124                         break;
1125
1126                         case CODEC_LAW:
1127                         d = write_buffer;
1128                         i = 0;
1129                         while(i < 256)
1130                         {
1131                                 *d++ = audio_s16_to_law[p_record_buffer[p_record_buffer_readp] & 0xffff];
1132                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1133                                 i++;
1134                         }
1135                         fwrite(write_buffer, 256, 1, p_record);
1136                         p_record_length += 256;
1137                         break;
1138                 }
1139                 /* because we still have data, we write again */
1140                 free += 256;
1141                 goto same_again;
1142         }
1143         /* the buffer stores the other stream */
1144
1145 different_again:
1146         /* if buffer empty, change it */
1147         if (p_record_buffer_readp == p_record_buffer_writep)
1148         {
1149                 p_record_buffer_dir = dir_fromup;
1150                 goto same_again;
1151         }
1152         /* how much data can we mix ? */
1153         ii = (p_record_buffer_writep - p_record_buffer_readp) & RECORD_BUFFER_MASK;
1154         if (length < ii)
1155                 ii = length;
1156
1157         if (ii > 256)
1158                 ii = 256;
1159 //printf("same ii=%d length=%d\n", ii, length);
1160 //PDEBUG(DEBUG_PORT, "record(data,%d,%d): free=%d, p_record_buffer_dir=%d, p_record_buffer_readp=%d, p_record_buffer_writep=%d: mixing %d bytes.\n", length, dir_fromup, free, p_record_buffer_dir, p_record_buffer_readp, p_record_buffer_writep, ii);
1161
1162         /* write data mixed with the buffer */
1163         switch(p_record_type)
1164         {
1165                 case CODEC_MONO:
1166                 s = (signed short *)write_buffer;
1167                 i = 0;
1168                 while(i < ii)
1169                 {
1170                         sample = p_record_buffer[p_record_buffer_readp]
1171                                 + audio_law_to_s32[*data++];
1172                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1173                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1174                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1175                         *s++ = sample;
1176                         i++;
1177                 }
1178                 fwrite(write_buffer, ii<<1, 1, p_record);
1179                 p_record_length += (ii<<1);
1180                 break;
1181
1182                 case CODEC_STEREO:
1183                 s = (signed short *)write_buffer;
1184                 if (p_record_buffer_dir)
1185                 {
1186                         i = 0;
1187                         while(i < ii)
1188                         {
1189                                 *s++ = audio_law_to_s32[*data++];
1190                                 *s++ = p_record_buffer[p_record_buffer_readp];
1191                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1192                                 i++;
1193                         }
1194                 } else
1195                 {
1196                         i = 0;
1197                         while(i < ii)
1198                         {
1199                                 *s++ = p_record_buffer[p_record_buffer_readp];
1200                                 *s++ = audio_law_to_s32[*data++];
1201                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1202                                 i++;
1203                         }
1204                 }
1205                 fwrite(write_buffer, ii<<2, 1, p_record);
1206                 p_record_length += (ii<<2);
1207                 break;
1208
1209                 case CODEC_8BIT:
1210                 d = write_buffer;
1211                 i = 0;
1212                 while(i < ii)
1213                 {
1214                         sample = p_record_buffer[p_record_buffer_readp]
1215                                 + audio_law_to_s32[*data++];
1216                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1217                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1218                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1219                         *d++ = (sample+0x8000) >> 8;
1220                         i++;
1221                 }
1222                 fwrite(write_buffer, ii, 1, p_record);
1223                 p_record_length += ii;
1224                 break;
1225
1226                 case CODEC_LAW:
1227                 d = write_buffer;
1228                 i = 0;
1229                 while(i < ii)
1230                 {
1231                         sample = p_record_buffer[p_record_buffer_readp]
1232                                 + audio_law_to_s32[*data++];
1233                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1234                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1235                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1236                         *d++ = audio_s16_to_law[sample & 0xffff];
1237                         i++;
1238                 }
1239                 fwrite(write_buffer, ii, 1, p_record);
1240                 p_record_length += ii;
1241                 break;
1242         }
1243         length -= ii;
1244         /* still data */
1245         if (length)
1246                 goto different_again;
1247         /* no data (maybe buffer) */
1248         return;
1249
1250 }
1251
1252