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   -> sound from asterisk
  23
  24 Audio is required:
  25
  26   -> if local or remote channel is not mISDN
  27   -> if endpoint is linked to asterisk
  28   -> if call is recorded (vbox)
  29
  30
  31 Functions:
  32
  33 * PmISDN::txfromup
  34   -> audio from upper layer is buffered for later transmission to channel
  35 * PmISDN::handler
  36   -> buffered audio from upper layer or tones are transmitted via system clock
  37 * mISDN_handler
  38   -> rx-data from port to record() and upper layer
  39   -> tx-data from port (dsp) to record()
  40 * VboxPort::handler
  41   -> streaming announcement to upper layer
  42   -> recording announcement
  43 * VboxPort::message_epoint
  44   -> recording audio message from upper layer
  45
  46
  47
  48 */
  49
  50 #include <stdio.h>
  51 #include <string.h>
  52 #include <stdlib.h>
  53 #include <sys/types.h>
  54 #include <sys/stat.h>
  55 #include <fcntl.h>
  56 #include <unistd.h>
  57 #include <errno.h>
  58 #include "main.h"
  59
  60 class Port *port_first = NULL;
  61
  62 unsigned long port_serial = 1; /* must be 1, because 0== no port */
  63
  64
  65 /* free epointlist relation
  66  */
  67 void Port::free_epointlist(struct epoint_list *epointlist)
  68 {
  69         struct epoint_list *temp, **tempp;
  70
  71         temp = p_epointlist;
  72         tempp = &p_epointlist;
  73         while(temp)
  74         {
  75                 if (temp == epointlist)
  76                         break;
  77
  78                 tempp = &temp->next;
  79                 temp = temp->next;
  80         }
  81         if (temp == 0)
  82         {
  83                 PERROR("SOFTWARE ERROR: epointlist not in port's list.\n");
  84                 return;
  85         }
  86         /* detach */
  87         *tempp=temp->next;
  88
  89         /* free */
  90         PDEBUG(DEBUG_EPOINT, "PORT(%d) removed epoint from port\n", p_serial);
  91         memset(temp, 0, sizeof(struct epoint_list));
  92         free(temp);
  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, exitting.\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         memset(temp, 0, sizeof(struct epoint_list));
 122         free(temp);
 123         ememuse--;
 124 }
 125
 126
 127 /* create new epointlist relation
 128  */
 129 struct epoint_list *Port::epointlist_new(unsigned long epoint_id)
 130 {
 131         struct epoint_list *epointlist, **epointlistpointer;
 132
 133         /* epointlist structure */
 134         epointlist = (struct epoint_list *)calloc(1, sizeof(struct epoint_list));
 135         if (!epointlist)
 136         {
 137                 PERROR("no mem for allocating epoint_list\n");
 138                 return(0);
 139         }
 140         ememuse++;
 141         PDEBUG(DEBUG_EPOINT, "PORT(%d) allocating epoint_list.\n", p_serial);
 142         memset(epointlist, 0, sizeof(struct epoint_list));
 143
 144         /* add epoint_list to chain */
 145         epointlist->next = NULL;
 146         epointlistpointer = &p_epointlist;
 147         while(*epointlistpointer)
 148                 epointlistpointer = &((*epointlistpointer)->next);
 149         *epointlistpointer = epointlist;
 150
 151         /* link to epoint */
 152         epointlist->epoint_id = epoint_id;
 153         epointlist->active = 1;
 154
 155         return(epointlist);
 156 }
 157
 158
 159 /*
 160  * port constructor
 161  */
 162 Port::Port(int type, char *portname, struct port_settings *settings)
 163 {
 164         class Port *temp, **tempp;
 165
 166         PDEBUG(DEBUG_PORT, "new port of type %d, name '%s'\n", type, portname);
 167
 168         /* initialize object */
 169         if (settings)
 170                 memcpy(&p_settings, settings, sizeof(struct port_settings));
 171         else
 172         {
 173                 memset(&p_settings, 0, sizeof(p_settings));
 174                 SCPY(p_settings.tones_dir, options.tones_dir);
 175         }
 176         SCPY(p_name, portname);
 177         SCPY(p_tone_dir, p_settings.tones_dir); // just to be sure
 178         p_last_tv_sec = 0;
 179         p_last_tv_msec = 0;
 180         p_type = type;
 181         p_serial = port_serial++;
 182         p_debug_nothingtosend = 0;
 183         p_tone_fh = -1;
 184         p_tone_fetched = NULL;
 185         p_tone_name[0] = '\0';
 186         p_state = PORT_STATE_IDLE;
 187         p_epointlist = NULL;
 188         memset(&p_callerinfo, 0, sizeof(p_callerinfo));
 189         memset(&p_dialinginfo, 0, sizeof(p_dialinginfo));
 190         memset(&p_connectinfo, 0, sizeof(p_connectinfo));
 191         memset(&p_redirinfo, 0, sizeof(p_redirinfo));
 192         memset(&p_capainfo, 0, sizeof(p_capainfo));
 193         p_echotest = 0;
 194
 195         /* call recording */
 196         p_record = NULL;
 197         p_record_type = 0;
 198         p_record_length = 0;
 199         p_record_skip = 0;
 200         p_record_filename[0] = '\0';
 201         p_record_buffer_readp = 0;
 202         p_record_buffer_writep = 0;
 203         p_record_buffer_dir = 0;
 204
 205         /* append port to chain */
 206         next = NULL;
 207         temp = port_first;
 208         tempp = &port_first;
 209         while(temp)
 210         {
 211                 tempp = &temp->next;
 212                 temp = temp->next;
 213         }
 214         *tempp = this;
 215
 216         classuse++;
 217 }
 218
 219
 220 /*
 221  * port destructor
 222  */
 223 Port::~Port(void)
 224 {
 225         class Port *temp, **tempp;
 226         struct message *message;
 227
 228         if (p_record)
 229                 close_record(0);
 230
 231         classuse--;
 232
 233         PDEBUG(DEBUG_PORT, "removing port of type %d, name '%s'\n", p_type, p_name);
 234
 235         /* disconnect port from endpoint */
 236         while(p_epointlist)
 237         {
 238                 /* send disconnect */
 239                 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 240                 message->param.disconnectinfo.cause = 16;
 241                 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 242                 message_put(message);
 243                 /* remove endpoint */
 244                 free_epointlist(p_epointlist);
 245         }
 246
 247         /* remove port from chain */
 248         temp=port_first;
 249         tempp=&port_first;
 250         while(temp)
 251         {
 252                 if (temp == this)
 253                         break;
 254                 tempp = &temp->next;
 255                 temp = temp->next;
 256         }
 257         if (temp == NULL)
 258         {
 259                 PERROR("PORT(%s) port not in port's list.\n", p_name);
 260                 exit(-1);
 261         }
 262         /* detach */
 263         *tempp=this->next;
 264
 265         /* close open tones file */
 266         if (p_tone_fh >= 0)
 267         {
 268                 close(p_tone_fh);
 269                 p_tone_fh = -1;
 270                 fhuse--;
 271         }
 272         p_tone_fetched = NULL;
 273 }
 274
 275 PORT_STATE_NAMES
 276
 277 /* set new endpoint state
 278  */
 279 void Port::new_state(int state)
 280 {
 281         PDEBUG(DEBUG_PORT, "PORT(%s) new state %s --> %s\n", p_name, state_name[p_state], state_name[state]);
 282         p_state = state;
 283 }
 284
 285
 286 /*
 287  * find the port with port_id
 288  */
 289 class Port *find_port_id(unsigned long port_id)
 290 {
 291         class Port *port = port_first;
 292
 293         while(port)
 294         {
 295 //printf("comparing: '%s' with '%s'\n", name, port->name);
 296                 if (port->p_serial == port_id)
 297                         return(port);
 298                 port = port->next;
 299         }
 300
 301         return(NULL);
 302 }
 303
 304
 305 /*
 306  * set echotest
 307  */
 308 void Port::set_echotest(int echotest)
 309 {
 310         p_echotest = echotest;
 311 }
 312
 313
 314 /*
 315  * set the file in the tone directory with the given name
 316  */
 317 void Port::set_tone(char *dir, char *name)
 318 {
 319         int fh;
 320         char filename[128];
 321
 322         if (name == NULL)
 323                 name = "";
 324
 325         /* no counter, no eof, normal speed */
 326         p_tone_counter = 0;
 327         p_tone_eof = 0;
 328         p_tone_speed = 1;
 329         p_tone_codec = CODEC_LAW;
 330
 331         if (p_tone_fh >= 0)
 332         {
 333                 close(p_tone_fh);
 334                 p_tone_fh = -1;
 335                 fhuse--;
 336         }
 337         p_tone_fetched = NULL;
 338
 339         if (name[0])
 340         {
 341                 if (name[0] == '/')
 342                 {
 343                         SPRINT(p_tone_name, "%s", name);
 344                         p_tone_dir[0] = '\0';
 345                 } else
 346                 {
 347                         SCPY(p_tone_dir, dir);
 348                         SCPY(p_tone_name, name);
 349                 }
 350         } else
 351         {
 352                 p_tone_name[0]= '\0';
 353                 p_tone_dir[0]= '\0';
 354                 return;
 355         }
 356
 357         if (!!strncmp(name,"cause_",6))
 358                 return;
 359
 360         /* now we check if the cause exists, otherwhise we use error tone. */
 361         if ((p_tone_fetched=open_tone_fetched(p_tone_dir, p_tone_name, &p_tone_codec, 0, 0)))
 362         {
 363                 p_tone_fetched = NULL;
 364                 return;
 365         }
 366         SPRINT(filename, "%s_loop", p_tone_name);
 367         if ((p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, 0, 0)))
 368         {
 369                 p_tone_fetched = NULL;
 370                 return;
 371         }
 372         SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 373         if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
 374         {
 375                 close(fh);
 376                 return;
 377         }
 378         SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
 379         if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
 380         {
 381                 close(fh);
 382                 return;
 383         }
 384
 385         if (!strcmp(name,"cause_00") || !strcmp(name,"cause_10"))
 386         {
 387                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using release tone\n", p_name, name+6);
 388                 SPRINT(p_tone_name,"release");
 389         } else
 390         if (!strcmp(name,"cause_11"))
 391         {
 392                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using busy tone\n", p_name, name+6);
 393                 SPRINT(p_tone_name,"busy");
 394         } else
 395         {
 396                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using error tone\n", p_name, name+6);
 397                 SPRINT(p_tone_name,"error");
 398         }
 399 }
 400
 401
 402 /*
 403  * set the file in the tone directory for vbox playback
 404  * also set the play_eof-flag
 405  */
 406 void Port::set_vbox_tone(char *dir, char *name)
 407 {
 408         char filename[256];
 409
 410         p_tone_speed = 1;
 411         p_tone_counter = 0;
 412         p_tone_codec = CODEC_LAW;
 413         p_tone_eof = 1;
 414
 415         if (p_tone_fh >= 0)
 416         {
 417                 close(p_tone_fh);
 418                 p_tone_fh = -1;
 419                 fhuse--;
 420         }
 421         p_tone_fetched = NULL;
 422
 423         SPRINT(p_tone_dir,  dir);
 424         SPRINT(p_tone_name,  name);
 425
 426         /* now we check if the cause exists, otherwhise we use error tone. */
 427         if (p_tone_dir[0])
 428         {
 429                 if ((p_tone_fetched=open_tone_fetched(p_tone_dir, p_tone_name, &p_tone_codec, &p_tone_size, &p_tone_left)))
 430                 {
 431                         PDEBUG(DEBUG_PORT, "PORT(%s) opening fetched tone: %s\n", p_name, p_tone_name);
 432                         return;
 433                 }
 434                 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 435                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) >= 0)
 436                 {
 437                         fhuse++;
 438                         PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
 439                         return;
 440                 }
 441         } else
 442         {
 443                 SPRINT(filename, "%s", p_tone_name);
 444                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) >= 0)
 445                 {
 446                         fhuse++;
 447                         PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
 448                         return;
 449                 }
 450         }
 451 }
 452
 453
 454 /*
 455  * set the file in the given directory for vbox playback
 456  * also set the eof-flag
 457  * also set the counter-flag
 458  */
 459 void Port::set_vbox_play(char *name, int offset)
 460 {
 461         signed long size;
 462         struct message *message;
 463
 464         /* use ser_box_tone() */
 465         set_vbox_tone("", name);
 466         if (p_tone_fh < 0)
 467                 return;
 468
 469         /* enable counter */
 470         p_tone_counter = 1;
 471
 472         /* seek */
 473         if (p_tone_name[0])
 474         {
 475                 /* send message with counter value */
 476                 if (p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 477                 {
 478                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 479                         message->param.counter.current = offset;
 480                         message->param.counter.max = size;
 481                         message_put(message);
 482                 }
 483         }
 484 }
 485
 486
 487 /*
 488  * set the playback speed (for recording playback with different speeds)
 489  */
 490 void Port::set_vbox_speed(int speed)
 491 {
 492         /* enable vbox play mode */
 493         p_tone_speed = speed;
 494 }
 495
 496 /*
 497  * read from the given file as specified in port_set_tone and return sample data
 498  * silence is appended if sample ends, but only the number of samples with tones are returned
 499  */
 500 int Port::read_audio(unsigned char *buffer, int length)
 501 {
 502         int l,len;
 503         int nodata=0; /* to detect 0-length files and avoid endless reopen */
 504         char filename[128];
 505         int tone_left_before; /* temp variable to determine the change in p_tone_left */
 506
 507         /* nothing */
 508         if (length == 0)
 509                 return(0);
 510
 511         len = length;
 512
 513         /* if there is no tone set, use silence */
 514         if (p_tone_name[0] == 0)
 515         {
 516 rest_is_silence:
 517                 memset(buffer, (options.law=='a')?0x2a:0xff, len); /* silence */
 518                 goto done;
 519         }
 520
 521         /* if the file pointer is not open, we open it */
 522         if (p_tone_fh<0 && p_tone_fetched==NULL)
 523         {
 524                 if (p_tone_dir[0])
 525                 {
 526                         SPRINT(filename, "%s", p_tone_name);
 527                         /* if file does not exist */
 528                         if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 529                         {
 530                                 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 531                                 /* if file does not exist */
 532                                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 533                                 {
 534                                         PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 535                                         goto try_loop;
 536                                 }
 537                                 fhuse++;
 538                         }
 539                 } else
 540                 {
 541                         SPRINT(filename, "%s", p_tone_name);
 542                         /* if file does not exist */
 543                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 544                         {
 545                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 546                                 goto try_loop;
 547                         }
 548                         fhuse++;
 549                 }
 550                 PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 551         }
 552
 553 read_more:
 554         /* file descriptor is open read data */
 555         tone_left_before = p_tone_left;
 556         if (p_tone_fh >= 0)
 557         {
 558                 l = read_tone(p_tone_fh, buffer, p_tone_codec, len, p_tone_size, &p_tone_left, p_tone_speed);
 559                 if (l<0 || l>len) /* paranoia */
 560                         l=0;
 561                 buffer += l;
 562                 len -= l;
 563         }
 564         if (p_tone_fetched)
 565         {
 566                 l = read_tone_fetched(&p_tone_fetched, buffer, len, p_tone_size, &p_tone_left, p_tone_speed);
 567                 if (l<0 || l>len) /* paranoia */
 568                         l=0;
 569                 buffer += l;
 570                 len -= l;
 571         }
 572
 573         /* if counter is enabled, we check if we have a change */
 574         if (p_tone_counter && p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 575         {
 576                 /* if we jumed to the next second */
 577                 if (((p_tone_size-p_tone_left)/8000) != (p_tone_size-tone_left_before)/8000)
 578                 {
 579 //printf("\nsize=%d left=%d\n\n",p_tone_size,p_tone_left);
 580                         struct message *message;
 581                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 582                         message->param.counter.current = (p_tone_size-p_tone_left)/8000;
 583                         message->param.counter.max = -1;
 584                         message_put(message);
 585                 }
 586         }
 587
 588         if (len==0)
 589                 goto done;
 590
 591         if (p_tone_fh >= 0)
 592         {
 593                 close(p_tone_fh);
 594                 p_tone_fh = -1;
 595                 fhuse--;
 596         }
 597         p_tone_fetched = NULL;
 598
 599         if (l)
 600                 nodata=0;
 601
 602         /* if the file has 0-length */
 603         if (nodata>1)
 604         {
 605                 PDEBUG(DEBUG_PORT, "PORT(%s) 0-length loop: %s\n", p_name, filename);
 606                 p_tone_name[0]=0;
 607                 p_tone_dir[0]=0;
 608                 goto rest_is_silence;
 609         }
 610
 611         /* if eof is reached, or if the normal file cannot be opened, continue with the loop file if possible */
 612 try_loop:
 613         if (p_tone_eof && ACTIVE_EPOINT(p_epointlist))
 614         {
 615                 struct message *message;
 616                 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_EOF);
 617                 message_put(message);
 618         }
 619
 620         if (p_tone_dir[0])
 621         {
 622                 /* if file does not exist */
 623                 SPRINT(filename, "%s_loop", p_tone_name);
 624                 if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 625                 {
 626                         SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
 627                         /* if file does not exist */
 628                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 629                         {
 630                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
 631                                 p_tone_dir[0] = '\0';
 632                                 p_tone_name[0] = '\0';
 633                                 goto rest_is_silence;
 634                         }
 635                         fhuse++;
 636                 }
 637         } else
 638         {
 639                 SPRINT(filename, "%s_loop", p_tone_name);
 640                 /* if file does not exist */
 641                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 642                 {
 643                         PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
 644                         p_tone_dir[0] = '\0';
 645                         p_tone_name[0] = '\0';
 646                         goto rest_is_silence;
 647                 }
 648                 fhuse++;
 649         }
 650         nodata++;
 651         PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 652
 653         /* now we have opened the loop */
 654         goto read_more;
 655
 656 done:
 657         return(length-len);
 658 }
 659
 660
 661 /* port handler:
 662  * process transmission clock */
 663 int Port::handler(void)
 664 {
 665         return(0);
 666 }
 667
 668 /* endpoint sends messages to the port
 669  * this is called by the message_epoint inherited by child classes
 670  * therefor a return=1 means: stop, no more processing
 671  */
 672 //extern struct message *dddebug;
 673 int Port::message_epoint(unsigned long epoint_id, int message_id, union parameter *param)
 674 {
 675         /* check if we got audio data from one remote port */
 676         switch(message_id)
 677         {
 678                 case MESSAGE_TONE: /* play tone */
 679                 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);
 680                 set_tone(param->tone.dir,param->tone.name);
 681                 return(1);
 682
 683                 case MESSAGE_VBOX_TONE: /* play tone of answering machine */
 684                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine tone '%s' '%s'\n", p_name, param->tone.dir, param->tone.name);
 685                 set_vbox_tone(param->tone.dir, param->tone.name);
 686                 return(1);
 687
 688                 case MESSAGE_VBOX_PLAY: /* play recording of answering machine */
 689                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine file to play '%s' (offset %d seconds)\n", p_name, param->play.file, param->play.offset);
 690                 set_vbox_play(param->play.file, param->play.offset);
 691                 return(1);
 692
 693                 case MESSAGE_VBOX_PLAY_SPEED: /* set speed of playback (recording of answering machine) */
 694                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine playback speed %d (times)\n", p_name, param->speed);
 695                 set_vbox_speed(param->speed);
 696                 return(1);
 697
 698         }
 699
 700         return(0);
 701 }
 702
 703
 704 /* wave header structure */
 705 struct fmt {
 706         unsigned short  stereo; /* 1 = mono, 2 = stereo */
 707         unsigned short  channels; /* number of channels */
 708         unsigned long   sample_rate; /* sample rate */
 709         unsigned long   data_rate; /* data rate */
 710         unsigned short  bytes_sample; /* bytes per sample (all channels) */
 711         unsigned short  bits_sample; /* bits per sample (one channel) */
 712 };
 713
 714
 715 /*
 716  * open record file (actually a wave file with empty header which will be
 717  * written before close, because we do not know the size yet)
 718  * type=1 record annoucement,  type=0 record audio stream, type=2 record vbox
 719  */
 720 int Port::open_record(int type, int vbox, int skip, char *extension, int anon_ignore, char *vbox_email, int vbox_email_file)
 721 {
 722         /* RIFFxxxxWAVEfmt xxxx(fmt-size)dataxxxx... */
 723         char dummyheader[8+4+8+sizeof(fmt)+8];
 724         char filename[256];
 725
 726         if (!extension)
 727         {
 728                 PERROR("Port(%d) not an extension\n", p_serial);
 729                 return(0);
 730         }
 731         SCPY(p_record_extension, extension);
 732         p_record_anon_ignore = anon_ignore;
 733         SCPY(p_record_vbox_email, vbox_email);
 734         p_record_vbox_email_file = vbox_email_file;
 735
 736         if (p_record)
 737         {
 738                 PERROR("Port(%d) already recording\n", p_serial);
 739                 return(0);
 740         }
 741
 742         if (vbox != 0)
 743                 SPRINT(filename, "%s/%s/%s/vbox", INSTALL_DATA, options.extensions_dir, p_record_extension);
 744         else
 745                 SPRINT(filename, "%s/%s/%s/recordings", INSTALL_DATA, options.extensions_dir, p_record_extension);
 746         if (mkdir(filename, 0755) < 0)
 747         {
 748                 if (errno != EEXIST)
 749                 {
 750                         PERROR("Port(%d) cannot create directory '%s'\n", p_serial, filename);
 751                         return(0);
 752                 }
 753         }
 754
 755         if (vbox == 1)
 756                 UPRINT(strchr(filename,'\0'), "/announcement");
 757         else
 758                 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);
 759         if (vbox == 2)
 760         {
 761                 p_record_vbox_year = now_tm->tm_year;
 762                 p_record_vbox_mon = now_tm->tm_mon;
 763                 p_record_vbox_mday = now_tm->tm_mday;
 764                 p_record_vbox_hour = now_tm->tm_hour;
 765                 p_record_vbox_min = now_tm->tm_min;
 766         }
 767
 768         /* check, if file exists (especially when an extension calls the same extension) */
 769         if (vbox != 1)
 770         if ((p_record = fopen(filename, "r")))
 771         {
 772                 fclose(p_record);
 773                 SCAT(filename, "_2nd");
 774         }
 775
 776         p_record = fopen(filename, "w");
 777         if (!p_record)
 778         {
 779                 PERROR("Port(%d) cannot record because file cannot be opened '%s'\n", p_serial, filename);
 780                 return(0);
 781         }
 782         fduse++;
 783
 784         p_record_type = type;
 785         p_record_vbox = vbox;
 786         p_record_skip = skip;
 787         p_record_length = 0;
 788         switch(p_record_type)
 789         {
 790                 case CODEC_MONO:
 791                 case CODEC_STEREO:
 792                 case CODEC_8BIT:
 793                 fwrite(dummyheader, sizeof(dummyheader), 1, p_record);
 794                 break;
 795
 796                 case CODEC_LAW:
 797                 break;
 798         }
 799         UCPY(p_record_filename, filename);
 800
 801         PDEBUG(DEBUG_PORT, "Port(%d) recording started with file name '%s'\n", p_serial, filename);
 802         return(1);
 803 }
 804
 805
 806 /*
 807  * close the recoding file, put header in front and rename
 808  */
 809 void Port::close_record(int beep)
 810 {
 811         static signed long beep_mono[] = {-10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000, -10000, 10000};
 812         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};
 813         unsigned long size, wsize;
 814         struct fmt fmt;
 815         char filename[512], indexname[512];
 816         FILE *fp;
 817         int i, ii;
 818         char number[256], callerid[256];
 819         char *p;
 820         struct caller_info callerinfo;
 821         char *valid_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_.-!$%&/()=+*;~";
 822
 823         if (!p_record)
 824                 return;
 825         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);
 826
 827         memcpy(&callerinfo, &p_callerinfo, sizeof(struct caller_info));
 828         apply_callerid_restriction(p_record_anon_ignore, callerinfo.id, &callerinfo.ntype, &callerinfo.present, &callerinfo.screen, callerinfo.extension, callerinfo.name);
 829
 830         SCPY(number, p_dialinginfo.id);
 831         SCPY(callerid, numberrize_callerinfo(callerinfo.id, callerinfo.ntype));
 832         if (callerid[0] == '\0')
 833         {
 834                 if (callerinfo.present == INFO_PRESENT_RESTRICTED)
 835                         UCPY(callerid,"anonymous");
 836                 else
 837                         UCPY(callerid,"unknown");
 838         }
 839
 840         /* change verboten digits */
 841         p = callerid;
 842         while((p=strchr(p,'*')))
 843                 *(p++) = 'x';
 844         p = callerid;
 845         while((p=strchr(p,'/')))
 846                 *(p++) = 'x';
 847         p = number;
 848         while((p=strchr(p,'*')))
 849                 *(p++) = 'x';
 850         p = number;
 851         while((p=strchr(p,'/')))
 852                 *(p++) = 'x';
 853         i = 0;
 854         ii = strlen(callerid);
 855         while(i < ii)
 856         {
 857                 if (!strchr(valid_chars, callerid[i]))
 858                         callerid[i] = '_';
 859                 i++;
 860         }
 861         i = 0;
 862         ii = strlen(number);
 863         while(i < ii)
 864         {
 865                 if (!strchr(valid_chars, number[i]))
 866                         number[i] = '_';
 867                 i++;
 868         }
 869
 870         /* add beep to the end of recording */
 871         if (beep)
 872         switch(p_record_type)
 873         {
 874                 case CODEC_MONO:
 875                 i = 0;
 876                 while(i < beep)
 877                 {
 878                         fwrite(beep_mono, sizeof(beep_mono), 1, p_record);
 879                         i += sizeof(beep_mono);
 880                         p_record_length += sizeof(beep_mono);
 881                 }
 882                 break;
 883                 case CODEC_8BIT:
 884                 i = 0;
 885                 while(i < beep)
 886                 {
 887                         fwrite(beep_8bit, sizeof(beep_8bit), 1, p_record);
 888                         i += sizeof(beep_8bit);
 889                         p_record_length += sizeof(beep_8bit);
 890                 }
 891                 break;
 892 #if 0
 893                 case CODEC_LAW:
 894                 i = 0;
 895                 while(i < beep)
 896                 {
 897                         fwrite(beep_law, sizeof(beep_law), 1, p_record);
 898                         i += sizeof(beep_law);
 899                         p_record_length += sizeof(beep_law);
 900                 }
 901                 break;
 902 #endif
 903                 default:
 904                 PERROR("codec %d not supported for beep adding\n", p_record_type);
 905         }
 906
 907         /* complete header */
 908         switch(p_record_type)
 909         {
 910                 case CODEC_MONO:
 911                 case CODEC_STEREO:
 912                 case CODEC_8BIT:
 913                 /* cue */
 914                 fprintf(p_record, "cue %c%c%c%c%c%c%c%c", 4, 0, 0, 0, 0,0,0,0);
 915
 916                 /* LIST */
 917                 fprintf(p_record, "LIST%c%c%c%cadtl", 4, 0, 0, 0);
 918
 919                 /* go to header */
 920                 fseek(p_record, 0, SEEK_SET);
 921
 922                 /* WAVEfmt xxxx(fmt-size)dataxxxx[data]cue xxxx0000LISTxxxxadtl*/
 923                 size = p_record_length;
 924                 wsize = 4+8+sizeof(fmt)+8+size+8+4+8+4;
 925
 926                 /* RIFF */
 927                 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));
 928
 929                 /* WAVE */
 930                 fprintf(p_record, "WAVE");
 931
 932                 /* fmt */
 933                 fprintf(p_record, "fmt %c%c%c%c", sizeof(fmt), 0, 0, 0);
 934                 switch(p_record_type)
 935                 {
 936                         case CODEC_MONO:
 937                         fmt.stereo = 1;
 938                         fmt.channels = 1;
 939                         fmt.sample_rate = 8000; /* samples/sec */
 940                         fmt.data_rate = 16000; /* full data rate */
 941                         fmt.bytes_sample = 2; /* all channels */
 942                         fmt.bits_sample = 16; /* one channel */
 943                         break;
 944
 945                         case CODEC_STEREO:
 946                         fmt.stereo = 1;
 947                         fmt.channels = 2;
 948                         fmt.sample_rate = 8000; /* samples/sec */
 949                         fmt.data_rate = 32000; /* full data rate */
 950                         fmt.bytes_sample = 4; /* all channels */
 951                         fmt.bits_sample = 16; /* one channel */
 952                         break;
 953
 954                         case CODEC_8BIT:
 955                         fmt.stereo = 1;
 956                         fmt.channels = 1;
 957                         fmt.sample_rate = 8000; /* samples/sec */
 958                         fmt.data_rate = 8000; /* full data rate */
 959                         fmt.bytes_sample = 1; /* all channels */
 960                         fmt.bits_sample = 8; /* one channel */
 961                         break;
 962                 }
 963                 fwrite(&fmt, sizeof(fmt), 1, p_record);
 964
 965                 /* data */
 966                 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));
 967
 968                 /* rename file */
 969                 if (p_record_vbox == 1)
 970                         SPRINT(filename, "%s.wav", p_record_filename);
 971                 else
 972                         SPRINT(filename, "%s_%s-%s.wav", p_record_filename, callerid, number);
 973                 break;
 974
 975                 case CODEC_LAW:
 976                 /* rename file */
 977                 if (p_record_vbox == 1)
 978                         SPRINT(filename, "%s.isdn", p_record_filename);
 979                 else
 980                         SPRINT(filename, "%s_%s-%s.isdn", p_record_filename, callerid, number);
 981                 break;
 982         }
 983
 984         fclose(p_record);
 985         fduse--;
 986         p_record = NULL;
 987
 988         if (rename(p_record_filename, filename) < 0)
 989         {
 990                 PERROR("Port(%d) cannot rename from '%s' to '%s'\n", p_serial, p_record_filename, filename);
 991                 return;
 992         }
 993
 994         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);
 995
 996         if (p_record_vbox == 2)
 997         {
 998                 SPRINT(indexname, "%s/%s/%s/vbox/index", INSTALL_DATA, options.extensions_dir, p_record_extension);
 999                 if ((fp = fopen(indexname,"a")))
1000                 {
1001                         fduse++;
1002
1003                         /* remove path from file name */
1004                         p = filename;
1005                         while(strchr(p, '/'))
1006                                 p = strchr(p, '/')+1;
1007                         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);
1008
1009                         fclose(fp);
1010                         fduse--;
1011                 } else
1012                 {
1013                         PERROR("Port(%d) cannot open index file '%s' to append.\n", p_serial, indexname);
1014                 }
1015
1016                 /* send email with sample*/
1017                 if (p_record_vbox_email[0])
1018                 {
1019                         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);
1020                 }
1021         }
1022 }
1023
1024
1025 /*
1026  * recording function
1027  * Records all data from down and from up into one single stream.
1028  * Both streams may have gaps or jitter.
1029  * A Jitter buffer for both streams is used to compensate jitter.
1030  *
1031  * If one stream (dir) received packets, they are stored to a
1032  * buffer to wait for the other stream (dir), so both streams can
1033  * be combined. If the buffer is full, it's content is written
1034  * without mixing stream. (assuming only one stram (dir) exists.)
1035  * A flag is used to indicate what stream is currently in buffer.
1036  *
1037  * NOTE: First stereo sample (odd) is from down, second is from up.
1038  */
1039 void Port::record(unsigned char *data, int length, int dir_fromup)
1040 {
1041         unsigned char write_buffer[1024], *d;
1042         signed short *s;
1043         int free, i, ii;
1044         signed long sample;
1045
1046         /* no recording */
1047         if (!p_record || !length)
1048                 return;
1049
1050         /* skip */
1051         if (dir_fromup)
1052         {
1053                 /* more than we have */
1054                 if (p_record_skip > length)
1055                 {
1056                         p_record_skip -= length;
1057                         return;
1058                 }
1059                 data += p_record_skip;
1060                 length -= p_record_skip;
1061         }
1062
1063         free = ((p_record_buffer_readp - p_record_buffer_writep - 1) & RECORD_BUFFER_MASK);
1064
1065         /* the buffer stores the same data stream */
1066         if (dir_fromup == p_record_buffer_dir)
1067         {
1068                 same_again:
1069
1070                 /* first write what we can to the buffer */
1071                 while(free && length)
1072                 {
1073                         p_record_buffer[p_record_buffer_writep] = audio_law_to_s32[*data++];
1074                         p_record_buffer_writep = (p_record_buffer_writep + 1) & RECORD_BUFFER_MASK;
1075                         free--;
1076                         length--;
1077                 }
1078                 /* all written, so we return */
1079                 if (!length)
1080                         return;
1081                 /* still data left, buffer is full, so we need to write to file */
1082                 switch(p_record_type)
1083                 {
1084                         case CODEC_MONO:
1085                         s = (signed short *)write_buffer;
1086                         i = 0;
1087                         while(i < 256)
1088                         {
1089                                 *s++ = p_record_buffer[p_record_buffer_readp];
1090                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1091                                 i++;
1092                         }
1093                         fwrite(write_buffer, 512, 1, p_record);
1094                         break;
1095
1096                         case CODEC_STEREO:
1097                         s = (signed short *)write_buffer;
1098                         if (p_record_buffer_dir)
1099                         {
1100                                 i = 0;
1101                                 while(i < 256)
1102                                 {
1103                                         *s++ = 0; /* nothing from down */
1104                                         *s++ = p_record_buffer[p_record_buffer_readp];
1105                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1106                                         i++;
1107                                 }
1108                         } else
1109                         {
1110                                 i = 0;
1111                                 while(i < 256)
1112                                 {
1113                                         *s++ = p_record_buffer[p_record_buffer_readp];
1114                                         *s++ = 0; /* nothing from up */
1115                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1116                                         i++;
1117                                 }
1118                         }
1119                         fwrite(write_buffer, 1024, 1, p_record);
1120                         break;
1121
1122                         case CODEC_8BIT:
1123                         d = write_buffer;
1124                         i = 0;
1125                         while(i < 256)
1126                         {
1127                                 *d++ = (p_record_buffer[p_record_buffer_readp]+0x8000) >> 8;
1128                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1129                                 i++;
1130                         }
1131                         fwrite(write_buffer, 512, 1, p_record);
1132                         break;
1133
1134                         case CODEC_LAW:
1135                         d = write_buffer;
1136                         i = 0;
1137                         while(i < 256)
1138                         {
1139                                 *d++ = audio_s16_to_law[p_record_buffer[p_record_buffer_readp] & 0xffff];
1140                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1141                                 i++;
1142                         }
1143                         fwrite(write_buffer, 256, 1, p_record);
1144                         break;
1145                 }
1146                 /* because we still have data, we write again */
1147                 free += sizeof(write_buffer);
1148                 goto same_again;
1149         }
1150         /* the buffer stores the other stream */
1151
1152         /* if buffer empty, change it */
1153         if (p_record_buffer_readp == p_record_buffer_writep)
1154         {
1155                 p_record_buffer_dir = dir_fromup;
1156                 goto same_again;
1157         }
1158         /* how much data can we mix ? */
1159         ii = (p_record_buffer_writep - p_record_buffer_readp) & RECORD_BUFFER_MASK;
1160         if (length < ii)
1161                 ii = length;
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 < 32767)
1174                                 sample = -32767;
1175                         if (sample > 32768)
1176                                 sample = 32768;
1177                         *s++ = sample;
1178                         i++;
1179                 }
1180                 fwrite(write_buffer, ii<<1, 1, p_record);
1181                 break;
1182
1183                 case CODEC_STEREO:
1184                 s = (signed short *)write_buffer;
1185                 if (p_record_buffer_dir)
1186                 {
1187                         i = 0;
1188                         while(i < ii)
1189                         {
1190                                 *s++ = audio_law_to_s32[*data++];
1191                                 *s++ = p_record_buffer[p_record_buffer_readp];
1192                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1193                                 i++;
1194                         }
1195                 } else
1196                 {
1197                         i = 0;
1198                         while(i < ii)
1199                         {
1200                                 *s++ = p_record_buffer[p_record_buffer_readp];
1201                                 *s++ = audio_law_to_s32[*data++];
1202                                 i++;
1203                         }
1204                 }
1205                 fwrite(write_buffer, ii<<2, 1, p_record);
1206                 break;
1207
1208                 case CODEC_8BIT:
1209                 d = write_buffer;
1210                 i = 0;
1211                 while(i < ii)
1212                 {
1213                         sample = p_record_buffer[p_record_buffer_readp]
1214                                 + audio_law_to_s32[*data++];
1215                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1216                         if (sample < 32767)
1217                                 sample = -32767;
1218                         if (sample > 32768)
1219                                 sample = 32768;
1220                         *d++ = (sample+0x8000) >> 8;
1221                         i++;
1222                 }
1223                 fwrite(write_buffer, ii, 1, p_record);
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 < 32767)
1235                                 sample = -32767;
1236                         if (sample > 32768)
1237                                 sample = 32768;
1238                         *d++ = audio_s16_to_law[sample & 0xffff];
1239                         i++;
1240                 }
1241                 fwrite(write_buffer, ii, 1, p_record);
1242                 break;
1243         }
1244         length -= ii;
1245         /* data, but buffer empty */
1246         if (length)
1247         {
1248                 p_record_buffer_dir = dir_fromup;
1249                 goto same_again;
1250         }
1251         /* no data (maybe buffer) */
1252         return;
1253
1254 }
1255
1256