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 "main.h"
  49
  50 #define SHORT_MIN -32768
  51 #define SHORT_MAX 32767
  52
  53 class Port *port_first = NULL;
  54
  55 unsigned long port_serial = 1; /* must be 1, because 0== no port */
  56
  57
  58 /* free epointlist relation
  59  */
  60 void Port::free_epointlist(struct epoint_list *epointlist)
  61 {
  62         struct epoint_list *temp, **tempp;
  63
  64         temp = p_epointlist;
  65         tempp = &p_epointlist;
  66         while(temp)
  67         {
  68                 if (temp == epointlist)
  69                         break;
  70
  71                 tempp = &temp->next;
  72                 temp = temp->next;
  73         }
  74         if (temp == 0)
  75         {
  76                 PERROR("SOFTWARE ERROR: epointlist not in port's list.\n");
  77                 return;
  78         }
  79         /* detach */
  80         *tempp=temp->next;
  81
  82         /* free */
  83         PDEBUG(DEBUG_EPOINT, "PORT(%d) removed epoint from port\n", p_serial);
  84         FREE(temp, sizeof(struct epoint_list));
  85         ememuse--;
  86 }
  87
  88
  89 void Port::free_epointid(unsigned long epoint_id)
  90 {
  91         struct epoint_list *temp, **tempp;
  92
  93         temp = p_epointlist;
  94         tempp = &p_epointlist;
  95         while(temp)
  96         {
  97                 if (temp->epoint_id == epoint_id)
  98                         break;
  99
 100                 tempp = &temp->next;
 101                 temp = temp->next;
 102         }
 103         if (temp == 0)
 104         {
 105                 PERROR("epoint_id not in port's list.\n");
 106                 return;
 107         }
 108         /* detach */
 109         *tempp=temp->next;
 110
 111         /* free */
 112         PDEBUG(DEBUG_EPOINT, "PORT(%d) removed epoint from port\n", p_serial);
 113         FREE(temp, sizeof(struct epoint_list));
 114         ememuse--;
 115 }
 116
 117
 118 /* create new epointlist relation
 119  */
 120 struct epoint_list *Port::epointlist_new(unsigned long epoint_id)
 121 {
 122         struct epoint_list *epointlist, **epointlistpointer;
 123
 124         /* epointlist structure */
 125         epointlist = (struct epoint_list *)MALLOC(sizeof(struct epoint_list));
 126         if (!epointlist)
 127                 FATAL("No memory for epointlist\n");
 128         ememuse++;
 129         PDEBUG(DEBUG_EPOINT, "PORT(%d) allocating epoint_list.\n", p_serial);
 130
 131         /* add epoint_list to chain */
 132         epointlist->next = NULL;
 133         epointlistpointer = &p_epointlist;
 134         while(*epointlistpointer)
 135                 epointlistpointer = &((*epointlistpointer)->next);
 136         *epointlistpointer = epointlist;
 137
 138         /* link to epoint */
 139         epointlist->epoint_id = epoint_id;
 140         epointlist->active = 1;
 141
 142         return(epointlist);
 143 }
 144
 145
 146 /*
 147  * port constructor
 148  */
 149 Port::Port(int type, char *portname, struct port_settings *settings)
 150 {
 151         class Port *temp, **tempp;
 152
 153         PDEBUG(DEBUG_PORT, "new port of type %d, name '%s'\n", type, portname);
 154
 155         /* initialize object */
 156         if (settings)
 157                 memcpy(&p_settings, settings, sizeof(struct port_settings));
 158         else
 159         {
 160                 memset(&p_settings, 0, sizeof(p_settings));
 161                 SCPY(p_settings.tones_dir, options.tones_dir);
 162         }
 163         SCPY(p_name, portname);
 164         SCPY(p_tone_dir, p_settings.tones_dir); // just to be sure
 165         p_type = type;
 166         p_serial = port_serial++;
 167         p_tone_fh = -1;
 168         p_tone_fetched = NULL;
 169         p_tone_name[0] = '\0';
 170         p_state = PORT_STATE_IDLE;
 171         p_epointlist = NULL;
 172         memset(&p_callerinfo, 0, sizeof(p_callerinfo));
 173         memset(&p_dialinginfo, 0, sizeof(p_dialinginfo));
 174         memset(&p_connectinfo, 0, sizeof(p_connectinfo));
 175         memset(&p_redirinfo, 0, sizeof(p_redirinfo));
 176         memset(&p_capainfo, 0, sizeof(p_capainfo));
 177         p_echotest = 0;
 178
 179         /* call recording */
 180         p_record = NULL;
 181         p_record_type = 0;
 182         p_record_length = 0;
 183         p_record_skip = 0;
 184         p_record_filename[0] = '\0';
 185         p_record_buffer_readp = 0;
 186         p_record_buffer_writep = 0;
 187         p_record_buffer_dir = 0;
 188
 189         /* append port to chain */
 190         next = NULL;
 191         temp = port_first;
 192         tempp = &port_first;
 193         while(temp)
 194         {
 195                 tempp = &temp->next;
 196                 temp = temp->next;
 197         }
 198         *tempp = this;
 199
 200         classuse++;
 201 }
 202
 203
 204 /*
 205  * port destructor
 206  */
 207 Port::~Port(void)
 208 {
 209         class Port *temp, **tempp;
 210         struct lcr_msg *message;
 211
 212         if (p_record)
 213                 close_record(0, 0);
 214
 215         classuse--;
 216
 217         PDEBUG(DEBUG_PORT, "removing port of type %d, name '%s'\n", p_type, p_name);
 218
 219         /* disconnect port from endpoint */
 220         while(p_epointlist)
 221         {
 222                 /* send disconnect */
 223                 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 224                 message->param.disconnectinfo.cause = 16;
 225                 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 226                 message_put(message);
 227                 /* remove endpoint */
 228                 free_epointlist(p_epointlist);
 229         }
 230
 231         /* remove port from chain */
 232         temp=port_first;
 233         tempp=&port_first;
 234         while(temp)
 235         {
 236                 if (temp == this)
 237                         break;
 238                 tempp = &temp->next;
 239                 temp = temp->next;
 240         }
 241         if (temp == NULL)
 242                 FATAL("PORT(%s) port not in port's list.\n", p_name);
 243         /* detach */
 244         *tempp=this->next;
 245
 246         /* close open tones file */
 247         if (p_tone_fh >= 0)
 248         {
 249                 close(p_tone_fh);
 250                 p_tone_fh = -1;
 251                 fhuse--;
 252         }
 253         p_tone_fetched = NULL;
 254 }
 255
 256 PORT_STATE_NAMES
 257
 258 /* set new endpoint state
 259  */
 260 void Port::new_state(int state)
 261 {
 262         PDEBUG(DEBUG_PORT, "PORT(%s) new state %s --> %s\n", p_name, state_name[p_state], state_name[state]);
 263         p_state = state;
 264 }
 265
 266
 267 /*
 268  * find the port with port_id
 269  */
 270 class Port *find_port_id(unsigned long port_id)
 271 {
 272         class Port *port = port_first;
 273
 274         while(port)
 275         {
 276 //printf("comparing: '%s' with '%s'\n", name, port->name);
 277                 if (port->p_serial == port_id)
 278                         return(port);
 279                 port = port->next;
 280         }
 281
 282         return(NULL);
 283 }
 284
 285
 286 /*
 287  * set echotest
 288  */
 289 void Port::set_echotest(int echotest)
 290 {
 291         p_echotest = echotest;
 292 }
 293
 294
 295 /*
 296  * set the file in the tone directory with the given name
 297  */
 298 void Port::set_tone(char *dir, char *name)
 299 {
 300         int fh;
 301         char filename[128];
 302
 303         if (name == NULL)
 304                 name = "";
 305
 306 #if 0
 307         /* if tones is jingle, store next tone */
 308         if ((p_tone_fh >= 0 || p_tone_fetched)
 309          && (!strcmp(p_tone_name, "left") || !strcmp(p_tone_name, "joined")))
 310         {
 311                 SCPY(p_tone_dir, dir);
 312                 SCPY(p_tone_name, name);
 313                 return;
 314         }
 315 #endif
 316
 317         /* no counter, no eof, normal speed */
 318         p_tone_counter = 0;
 319         p_tone_eof = 0;
 320         p_tone_speed = 1;
 321         p_tone_codec = CODEC_LAW;
 322
 323         if (p_tone_fh >= 0)
 324         {
 325                 close(p_tone_fh);
 326                 p_tone_fh = -1;
 327                 fhuse--;
 328         }
 329         p_tone_fetched = NULL;
 330
 331         if (name[0])
 332         {
 333                 if (name[0] == '/')
 334                 {
 335                         SPRINT(p_tone_name, "%s", name);
 336                         p_tone_dir[0] = '\0';
 337                 } else
 338                 {
 339                         SCPY(p_tone_dir, dir);
 340                         SCPY(p_tone_name, name);
 341                 }
 342         } else
 343         {
 344                 p_tone_name[0]= '\0';
 345                 p_tone_dir[0]= '\0';
 346                 return;
 347         }
 348
 349         if (!!strncmp(name,"cause_",6))
 350                 return;
 351
 352         /* now we check if the cause exists, otherwhise we use error tone. */
 353         if ((p_tone_fetched=open_tone_fetched(p_tone_dir, p_tone_name, &p_tone_codec, 0, 0)))
 354         {
 355                 p_tone_fetched = NULL;
 356                 return;
 357         }
 358         SPRINT(filename, "%s_loop", p_tone_name);
 359         if ((p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, 0, 0)))
 360         {
 361                 p_tone_fetched = NULL;
 362                 return;
 363         }
 364         SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 365         if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
 366         {
 367                 close(fh);
 368                 return;
 369         }
 370         SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
 371         if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
 372         {
 373                 close(fh);
 374                 return;
 375         }
 376
 377         if (!strcmp(name,"cause_00") || !strcmp(name,"cause_10"))
 378         {
 379                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using release tone\n", p_name, name+6);
 380                 SPRINT(p_tone_name,"release");
 381         } else
 382         if (!strcmp(name,"cause_11"))
 383         {
 384                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using busy tone\n", p_name, name+6);
 385                 SPRINT(p_tone_name,"busy");
 386         } else
 387         {
 388                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using error tone\n", p_name, name+6);
 389                 SPRINT(p_tone_name,"error");
 390         }
 391 }
 392
 393
 394 /*
 395  * set the file in the tone directory for vbox playback
 396  * also set the play_eof-flag
 397  */
 398 void Port::set_vbox_tone(char *dir, char *name)
 399 {
 400         char filename[256];
 401
 402         p_tone_speed = 1;
 403         p_tone_counter = 0;
 404         p_tone_codec = CODEC_LAW;
 405         p_tone_eof = 1;
 406
 407         if (p_tone_fh >= 0)
 408         {
 409                 close(p_tone_fh);
 410                 p_tone_fh = -1;
 411                 fhuse--;
 412         }
 413         p_tone_fetched = NULL;
 414
 415         SPRINT(p_tone_dir,  dir);
 416         SPRINT(p_tone_name,  name);
 417
 418         /* now we check if the cause exists, otherwhise we use error tone. */
 419         if (p_tone_dir[0])
 420         {
 421                 if ((p_tone_fetched=open_tone_fetched(p_tone_dir, p_tone_name, &p_tone_codec, &p_tone_size, &p_tone_left)))
 422                 {
 423                         PDEBUG(DEBUG_PORT, "PORT(%s) opening fetched tone: %s\n", p_name, p_tone_name);
 424                         return;
 425                 }
 426                 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 427                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) >= 0)
 428                 {
 429                         fhuse++;
 430                         PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
 431                         return;
 432                 }
 433         } else
 434         {
 435                 SPRINT(filename, "%s", p_tone_name);
 436                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) >= 0)
 437                 {
 438                         fhuse++;
 439                         PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
 440                         return;
 441                 }
 442         }
 443 }
 444
 445
 446 /*
 447  * set the file in the given directory for vbox playback
 448  * also set the eof-flag
 449  * also set the counter-flag
 450  */
 451 void Port::set_vbox_play(char *name, int offset)
 452 {
 453         signed long size;
 454         struct lcr_msg *message;
 455
 456         /* use ser_box_tone() */
 457         set_vbox_tone("", name);
 458         if (p_tone_fh < 0)
 459                 return;
 460
 461         /* enable counter */
 462         p_tone_counter = 1;
 463
 464         /* seek */
 465         if (p_tone_name[0])
 466         {
 467                 /* send message with counter value */
 468                 if (p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 469                 {
 470                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 471                         message->param.counter.current = offset;
 472                         message->param.counter.max = size;
 473                         message_put(message);
 474                 }
 475         }
 476 }
 477
 478
 479 /*
 480  * set the playback speed (for recording playback with different speeds)
 481  */
 482 void Port::set_vbox_speed(int speed)
 483 {
 484         /* enable vbox play mode */
 485         p_tone_speed = speed;
 486 }
 487
 488 /*
 489  * read from the given file as specified in port_set_tone and return sample data
 490  * if the tone ends, the result may be less samples than requested
 491  */
 492 int Port::read_audio(unsigned char *buffer, int length)
 493 {
 494         int l,len;
 495         int nodata=0; /* to detect 0-length files and avoid endless reopen */
 496         char filename[128];
 497         int tone_left_before; /* temp variable to determine the change in p_tone_left */
 498
 499         /* nothing */
 500         if (length == 0)
 501                 return(0);
 502
 503         len = length;
 504
 505         /* if there is no tone set, use silence */
 506         if (!p_tone_name[0])
 507                 return(0);
 508
 509         /* if the file pointer is not open, we open it */
 510         if (p_tone_fh<0 && p_tone_fetched==NULL)
 511         {
 512                 if (p_tone_dir[0])
 513                 {
 514                         SPRINT(filename, "%s", p_tone_name);
 515                         /* if file does not exist */
 516                         if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 517                         {
 518                                 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 519                                 /* if file does not exist */
 520                                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 521                                 {
 522                                         PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 523                                         goto try_loop;
 524                                 }
 525                                 fhuse++;
 526                         }
 527                 } else
 528                 {
 529                         SPRINT(filename, "%s", p_tone_name);
 530                         /* if file does not exist */
 531                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 532                         {
 533                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 534                                 goto try_loop;
 535                         }
 536                         fhuse++;
 537                 }
 538                 PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 539         }
 540
 541 read_more:
 542         /* file descriptor is open read data */
 543         tone_left_before = p_tone_left;
 544         if (p_tone_fh >= 0)
 545         {
 546                 l = read_tone(p_tone_fh, buffer, p_tone_codec, len, p_tone_size, &p_tone_left, p_tone_speed);
 547                 if (l<0 || l>len) /* paranoia */
 548                         l=0;
 549                 buffer += l;
 550                 len -= l;
 551         }
 552         if (p_tone_fetched)
 553         {
 554                 l = read_tone_fetched(&p_tone_fetched, buffer, len, p_tone_size, &p_tone_left, p_tone_speed);
 555                 if (l<0 || l>len) /* paranoia */
 556                         l=0;
 557                 buffer += l;
 558                 len -= l;
 559         }
 560
 561         /* if counter is enabled, we check if we have a change */
 562         if (p_tone_counter && p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 563         {
 564                 /* if we jumed to the next second */
 565                 if (((p_tone_size-p_tone_left)/8000) != (p_tone_size-tone_left_before)/8000)
 566                 {
 567 //printf("\nsize=%d left=%d\n\n",p_tone_size,p_tone_left);
 568                         struct lcr_msg *message;
 569                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 570                         message->param.counter.current = (p_tone_size-p_tone_left)/8000;
 571                         message->param.counter.max = -1;
 572                         message_put(message);
 573                 }
 574         }
 575
 576         if (len==0)
 577                 return(length-len);
 578
 579         if (p_tone_fh >= 0)
 580         {
 581                 close(p_tone_fh);
 582                 p_tone_fh = -1;
 583                 fhuse--;
 584         }
 585         p_tone_fetched = NULL;
 586
 587         if (l)
 588                 nodata=0;
 589
 590         /* if the file has 0-length */
 591         if (nodata>1)
 592         {
 593                 PDEBUG(DEBUG_PORT, "PORT(%s) 0-length loop: %s\n", p_name, filename);
 594                 p_tone_name[0]=0;
 595                 p_tone_dir[0]=0;
 596                 return(length-len);
 597         }
 598
 599         /* if eof is reached, or if the normal file cannot be opened, continue with the loop file if possible */
 600 try_loop:
 601         if (p_tone_eof && ACTIVE_EPOINT(p_epointlist))
 602         {
 603                 struct lcr_msg *message;
 604                 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_EOF);
 605                 message_put(message);
 606         }
 607
 608         if (p_tone_dir[0])
 609         {
 610                 /* if file does not exist */
 611                 SPRINT(filename, "%s_loop", p_tone_name);
 612                 if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 613                 {
 614                         SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
 615                         /* if file does not exist */
 616                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 617                         {
 618                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
 619                                 p_tone_dir[0] = '\0';
 620                                 p_tone_name[0] = '\0';
 621                                 return(length-len);
 622                         }
 623                         fhuse++;
 624                 }
 625         } else
 626         {
 627                 SPRINT(filename, "%s_loop", p_tone_name);
 628                 /* if file does not exist */
 629                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 630                 {
 631                         PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
 632                         p_tone_dir[0] = '\0';
 633                         p_tone_name[0] = '\0';
 634                         return(length-len);
 635                 }
 636                 fhuse++;
 637         }
 638         nodata++;
 639         PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 640
 641         /* now we have opened the loop */
 642         goto read_more;
 643 }
 644
 645
 646 /* port handler:
 647  * process transmission clock */
 648 int Port::handler(void)
 649 {
 650         return(0);
 651 }
 652
 653 /* endpoint sends messages to the port
 654  * this is called by the message_epoint inherited by child classes
 655  * therefor a return=1 means: stop, no more processing
 656  */
 657 //extern struct lcr_msg *dddebug;
 658 int Port::message_epoint(unsigned long epoint_id, int message_id, union parameter *param)
 659 {
 660         /* check if we got audio data from one remote port */
 661         switch(message_id)
 662         {
 663                 case MESSAGE_TONE: /* play tone */
 664                 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);
 665                 set_tone(param->tone.dir,param->tone.name);
 666                 return(1);
 667
 668                 case MESSAGE_VBOX_TONE: /* play tone of answering machine */
 669                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine tone '%s' '%s'\n", p_name, param->tone.dir, param->tone.name);
 670                 set_vbox_tone(param->tone.dir, param->tone.name);
 671                 return(1);
 672
 673                 case MESSAGE_VBOX_PLAY: /* play recording of answering machine */
 674                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine file to play '%s' (offset %d seconds)\n", p_name, param->play.file, param->play.offset);
 675                 set_vbox_play(param->play.file, param->play.offset);
 676                 return(1);
 677
 678                 case MESSAGE_VBOX_PLAY_SPEED: /* set speed of playback (recording of answering machine) */
 679                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine playback speed %d (times)\n", p_name, param->speed);
 680                 set_vbox_speed(param->speed);
 681                 return(1);
 682
 683         }
 684
 685         return(0);
 686 }
 687
 688
 689 /* wave header structure */
 690 struct fmt {
 691         unsigned short  stereo; /* 1 = mono, 2 = stereo */
 692         unsigned short  channels; /* number of channels */
 693         unsigned long   sample_rate; /* sample rate */
 694         unsigned long   data_rate; /* data rate */
 695         unsigned short  bytes_sample; /* bytes per sample (all channels) */
 696         unsigned short  bits_sample; /* bits per sample (one channel) */
 697 };
 698
 699
 700 /*
 701  * open record file (actually a wave file with empty header which will be
 702  * written before close, because we do not know the size yet)
 703  * type=1 record annoucement,  type=0 record audio stream, type=2 record vbox
 704  */
 705 int Port::open_record(int type, int vbox, int skip, char *extension, int anon_ignore, char *vbox_email, int vbox_email_file)
 706 {
 707         /* RIFFxxxxWAVEfmt xxxx(fmt-size)dataxxxx... */
 708         char dummyheader[8+4+8+sizeof(fmt)+8];
 709         char filename[256];
 710
 711         if (!extension)
 712         {
 713                 PERROR("Port(%d) not an extension\n", p_serial);
 714                 return(0);
 715         }
 716         SCPY(p_record_extension, extension);
 717         p_record_anon_ignore = anon_ignore;
 718         SCPY(p_record_vbox_email, vbox_email);
 719         p_record_vbox_email_file = vbox_email_file;
 720
 721         if (p_record)
 722         {
 723                 PERROR("Port(%d) already recording\n", p_serial);
 724                 return(0);
 725         }
 726
 727         if (vbox != 0)
 728                 SPRINT(filename, "%s/%s/%s/vbox", INSTALL_DATA, options.extensions_dir, p_record_extension);
 729         else
 730                 SPRINT(filename, "%s/%s/%s/recordings", INSTALL_DATA, options.extensions_dir, p_record_extension);
 731         if (mkdir(filename, 0755) < 0)
 732         {
 733                 if (errno != EEXIST)
 734                 {
 735                         PERROR("Port(%d) cannot create directory '%s'\n", p_serial, filename);
 736                         return(0);
 737                 }
 738         }
 739
 740         if (vbox == 1)
 741                 UPRINT(strchr(filename,'\0'), "/announcement");
 742         else
 743                 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);
 744         if (vbox == 2)
 745         {
 746                 p_record_vbox_year = now_tm->tm_year;
 747                 p_record_vbox_mon = now_tm->tm_mon;
 748                 p_record_vbox_mday = now_tm->tm_mday;
 749                 p_record_vbox_hour = now_tm->tm_hour;
 750                 p_record_vbox_min = now_tm->tm_min;
 751         }
 752
 753         /* check, if file exists (especially when an extension calls the same extension) */
 754         if (vbox != 1)
 755         if ((p_record = fopen(filename, "r")))
 756         {
 757                 fclose(p_record);
 758                 SCAT(filename, "_2nd");
 759         }
 760
 761         p_record = fopen(filename, "w");
 762         if (!p_record)
 763         {
 764                 PERROR("Port(%d) cannot record because file cannot be opened '%s'\n", p_serial, filename);
 765                 return(0);
 766         }
 767         fduse++;
 768
 769         p_record_type = type;
 770         p_record_vbox = vbox;
 771         p_record_skip = skip;
 772         p_record_length = 0;
 773         switch(p_record_type)
 774         {
 775                 case CODEC_MONO:
 776                 case CODEC_STEREO:
 777                 case CODEC_8BIT:
 778                 fwrite(dummyheader, sizeof(dummyheader), 1, p_record);
 779                 break;
 780
 781                 case CODEC_LAW:
 782                 break;
 783         }
 784         UCPY(p_record_filename, filename);
 785
 786         PDEBUG(DEBUG_PORT, "Port(%d) recording started with file name '%s'\n", p_serial, filename);
 787         return(1);
 788 }
 789
 790
 791 /*
 792  * close the recoding file, put header in front and rename
 793  */
 794 void Port::close_record(int beep, int mute)
 795 {
 796         static signed short beep_mono[256];
 797         unsigned long size, wsize;
 798         struct fmt fmt;
 799         char filename[512], indexname[512];
 800         FILE *fp;
 801         int i, ii;
 802         char number[256], callerid[256];
 803         char *p;
 804         struct caller_info callerinfo;
 805         char *valid_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_.-!$%&/()=+*;~";
 806
 807         if (!p_record)
 808                 return;
 809         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);
 810
 811         memcpy(&callerinfo, &p_callerinfo, sizeof(struct caller_info));
 812 //      apply_callerid_restriction(p_record_anon_ignore, callerinfo.id, &callerinfo.ntype, &callerinfo.present, &callerinfo.screen, callerinfo.extension, callerinfo.name);
 813
 814         SCPY(number, p_dialinginfo.id);
 815         SCPY(callerid, numberrize_callerinfo(callerinfo.id, callerinfo.ntype, options.national, options.international));
 816         if (callerid[0] == '\0')
 817         {
 818                 if (callerinfo.present == INFO_PRESENT_RESTRICTED)
 819                         UCPY(callerid,"anonymous");
 820                 else
 821                         UCPY(callerid,"unknown");
 822         }
 823
 824         /* change verboten digits */
 825         p = callerid;
 826         while((p=strchr(p,'*')))
 827                 *(p++) = 'x';
 828         p = callerid;
 829         while((p=strchr(p,'/')))
 830                 *(p++) = 'x';
 831         p = number;
 832         while((p=strchr(p,'*')))
 833                 *(p++) = 'x';
 834         p = number;
 835         while((p=strchr(p,'/')))
 836                 *(p++) = 'x';
 837         i = 0;
 838         ii = strlen(callerid);
 839         while(i < ii)
 840         {
 841                 if (!strchr(valid_chars, callerid[i]))
 842                         callerid[i] = '_';
 843                 i++;
 844         }
 845         i = 0;
 846         ii = strlen(number);
 847         while(i < ii)
 848         {
 849                 if (!strchr(valid_chars, number[i]))
 850                         number[i] = '_';
 851                 i++;
 852         }
 853
 854         /* mute */
 855         if (mute && p_record_type==CODEC_MONO)
 856         {
 857                 i = p_record_length;
 858                 if (i > mute)
 859                         i = mute;
 860                 fseek(p_record, -(i<<1), SEEK_END);
 861                 p_record_length -= (i<<1);
 862         }
 863         /* add beep to the end of recording */
 864         if (beep && p_record_type==CODEC_MONO)
 865         {
 866                 i = 0;
 867                 while(i < 256)
 868                 {
 869                         beep_mono[i] = (signed short)(sin((double)i / 5.688888888889 * 2.0 * 3.1415927) * 2000.0);
 870                         i++;
 871                 }
 872                 i = 0;
 873                 while(i < beep)
 874                 {
 875                         fwrite(beep_mono, sizeof(beep_mono), 1, p_record);
 876                         i += sizeof(beep_mono);
 877                         p_record_length += sizeof(beep_mono);
 878                 }
 879         }
 880
 881         /* complete header */
 882         switch(p_record_type)
 883         {
 884                 case CODEC_MONO:
 885                 case CODEC_STEREO:
 886                 case CODEC_8BIT:
 887                 /* cue */
 888                 fprintf(p_record, "cue %c%c%c%c%c%c%c%c", 4, 0, 0, 0, 0,0,0,0);
 889
 890                 /* LIST */
 891                 fprintf(p_record, "LIST%c%c%c%cadtl", 4, 0, 0, 0);
 892
 893                 /* go to header */
 894                 fseek(p_record, 0, SEEK_SET);
 895
 896                 /* WAVEfmt xxxx(fmt-size)dataxxxx[data]cue xxxx0000LISTxxxxadtl*/
 897                 size = p_record_length;
 898                 wsize = 4+8+sizeof(fmt)+8+size+8+4+8+4;
 899
 900                 /* RIFF */
 901                 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));
 902
 903                 /* WAVE */
 904                 fprintf(p_record, "WAVE");
 905
 906                 /* fmt */
 907                 fprintf(p_record, "fmt %c%c%c%c", sizeof(fmt), 0, 0, 0);
 908                 switch(p_record_type)
 909                 {
 910                         case CODEC_MONO:
 911                         fmt.stereo = 1;
 912                         fmt.channels = 1;
 913                         fmt.sample_rate = 8000; /* samples/sec */
 914                         fmt.data_rate = 16000; /* full data rate */
 915                         fmt.bytes_sample = 2; /* all channels */
 916                         fmt.bits_sample = 16; /* one channel */
 917                         break;
 918
 919                         case CODEC_STEREO:
 920                         fmt.stereo = 1;
 921                         fmt.channels = 2;
 922                         fmt.sample_rate = 8000; /* samples/sec */
 923                         fmt.data_rate = 32000; /* full data rate */
 924                         fmt.bytes_sample = 4; /* all channels */
 925                         fmt.bits_sample = 16; /* one channel */
 926                         break;
 927
 928                         case CODEC_8BIT:
 929                         fmt.stereo = 1;
 930                         fmt.channels = 1;
 931                         fmt.sample_rate = 8000; /* samples/sec */
 932                         fmt.data_rate = 8000; /* full data rate */
 933                         fmt.bytes_sample = 1; /* all channels */
 934                         fmt.bits_sample = 8; /* one channel */
 935                         break;
 936                 }
 937                 fwrite(&fmt, sizeof(fmt), 1, p_record);
 938
 939                 /* data */
 940                 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));
 941
 942                 /* rename file */
 943                 if (p_record_vbox == 1)
 944                         SPRINT(filename, "%s.wav", p_record_filename);
 945                 else
 946                         SPRINT(filename, "%s_%s-%s.wav", p_record_filename, callerid, number);
 947                 break;
 948
 949                 case CODEC_LAW:
 950                 /* rename file */
 951                 if (p_record_vbox == 1)
 952                         SPRINT(filename, "%s.isdn", p_record_filename);
 953                 else
 954                         SPRINT(filename, "%s_%s-%s.isdn", p_record_filename, callerid, number);
 955                 break;
 956         }
 957
 958         fclose(p_record);
 959         fduse--;
 960         p_record = NULL;
 961
 962         if (rename(p_record_filename, filename) < 0)
 963         {
 964                 PERROR("Port(%d) cannot rename from '%s' to '%s'\n", p_serial, p_record_filename, filename);
 965                 return;
 966         }
 967
 968         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);
 969
 970         if (p_record_vbox == 2)
 971         {
 972                 SPRINT(indexname, "%s/%s/%s/vbox/index", INSTALL_DATA, options.extensions_dir, p_record_extension);
 973                 if ((fp = fopen(indexname,"a")))
 974                 {
 975                         fduse++;
 976
 977                         /* remove path from file name */
 978                         p = filename;
 979                         while(strchr(p, '/'))
 980                                 p = strchr(p, '/')+1;
 981                         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);
 982
 983                         fclose(fp);
 984                         fduse--;
 985                 } else
 986                 {
 987                         PERROR("Port(%d) cannot open index file '%s' to append.\n", p_serial, indexname);
 988                 }
 989
 990                 /* send email with sample*/
 991                 if (p_record_vbox_email[0])
 992                 {
 993                         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);
 994                 }
 995         }
 996 }
 997
 998
 999 /*
1000  * recording function
1001  * Records all data from down and from up into one single stream.
1002  * Both streams may have gaps or jitter.
1003  * A Jitter buffer for both streams is used to compensate jitter.
1004  *
1005  * If one stream (dir) received packets, they are stored to a
1006  * buffer to wait for the other stream (dir), so both streams can
1007  * be combined. If the buffer is full, it's content is written
1008  * without mixing stream. (assuming only one stram (dir) exists.)
1009  * A flag is used to indicate what stream is currently in buffer.
1010  *
1011  * NOTE: First stereo sample (odd) is from down, second is from up.
1012  */
1013 void Port::record(unsigned char *data, int length, int dir_fromup)
1014 {
1015         unsigned char write_buffer[1024], *d;
1016         signed short *s;
1017         int free, i, ii;
1018         signed long sample;
1019
1020         /* no recording */
1021         if (!p_record || !length)
1022                 return;
1023
1024         /* skip data from local caller (dtmf input) */
1025         if (p_record_skip && !dir_fromup)
1026         {
1027                 /* more to skip than we have */
1028                 if (p_record_skip > length)
1029                 {
1030                         p_record_skip -= length;
1031                         return;
1032                 }
1033                 /* less to skip */
1034                 data += p_record_skip;
1035                 length -= p_record_skip;
1036                 p_record_skip = 0;
1037         }
1038
1039 //printf("dir=%d len=%d\n", dir_fromup, length);
1040
1041         free = ((p_record_buffer_readp - p_record_buffer_writep - 1) & RECORD_BUFFER_MASK);
1042
1043 //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);
1044
1045         /* the buffer stores the same data stream */
1046         if (dir_fromup == p_record_buffer_dir)
1047         {
1048 same_again:
1049
1050 //printf("same free=%d length=%d\n", free, length);
1051                 /* first write what we can to the buffer */
1052                 while(free && length)
1053                 {
1054                         p_record_buffer[p_record_buffer_writep] = audio_law_to_s32[*data++];
1055                         p_record_buffer_writep = (p_record_buffer_writep + 1) & RECORD_BUFFER_MASK;
1056                         free--;
1057                         length--;
1058                 }
1059                 /* all written, so we return */
1060                 if (!length)
1061                         return;
1062                 /* still data left, buffer is full, so we need to write a chunk to file */
1063                 switch(p_record_type)
1064                 {
1065                         case CODEC_MONO:
1066                         s = (signed short *)write_buffer;
1067                         i = 0;
1068                         while(i < 256)
1069                         {
1070                                 *s++ = p_record_buffer[p_record_buffer_readp];
1071                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1072                                 i++;
1073                         }
1074                         fwrite(write_buffer, 512, 1, p_record);
1075                         p_record_length += 512;
1076                         break;
1077
1078                         case CODEC_STEREO:
1079                         s = (signed short *)write_buffer;
1080                         if (p_record_buffer_dir)
1081                         {
1082                                 i = 0;
1083                                 while(i < 256)
1084                                 {
1085                                         *s++ = 0; /* nothing from down */
1086                                         *s++ = p_record_buffer[p_record_buffer_readp];
1087                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1088                                         i++;
1089                                 }
1090                         } else
1091                         {
1092                                 i = 0;
1093                                 while(i < 256)
1094                                 {
1095                                         *s++ = p_record_buffer[p_record_buffer_readp];
1096                                         *s++ = 0; /* nothing from up */
1097                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1098                                         i++;
1099                                 }
1100                         }
1101                         fwrite(write_buffer, 1024, 1, p_record);
1102                         p_record_length += 1024;
1103                         break;
1104
1105                         case CODEC_8BIT:
1106                         d = write_buffer;
1107                         i = 0;
1108                         while(i < 256)
1109                         {
1110                                 *d++ = ((unsigned short)(p_record_buffer[p_record_buffer_readp]+0x8000)) >> 8;
1111                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1112                                 i++;
1113                         }
1114                         fwrite(write_buffer, 512, 1, p_record);
1115                         p_record_length += 512;
1116                         break;
1117
1118                         case CODEC_LAW:
1119                         d = write_buffer;
1120                         i = 0;
1121                         while(i < 256)
1122                         {
1123                                 *d++ = audio_s16_to_law[p_record_buffer[p_record_buffer_readp] & 0xffff];
1124                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1125                                 i++;
1126                         }
1127                         fwrite(write_buffer, 256, 1, p_record);
1128                         p_record_length += 256;
1129                         break;
1130                 }
1131                 /* because we still have data, we write again */
1132                 free += 256;
1133                 goto same_again;
1134         }
1135         /* the buffer stores the other stream */
1136
1137 different_again:
1138         /* if buffer empty, change it */
1139         if (p_record_buffer_readp == p_record_buffer_writep)
1140         {
1141                 p_record_buffer_dir = dir_fromup;
1142                 goto same_again;
1143         }
1144         /* how much data can we mix ? */
1145         ii = (p_record_buffer_writep - p_record_buffer_readp) & RECORD_BUFFER_MASK;
1146         if (length < ii)
1147                 ii = length;
1148
1149         if (ii > 256)
1150                 ii = 256;
1151 //printf("same ii=%d length=%d\n", ii, length);
1152 //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);
1153
1154         /* write data mixed with the buffer */
1155         switch(p_record_type)
1156         {
1157                 case CODEC_MONO:
1158                 s = (signed short *)write_buffer;
1159                 i = 0;
1160                 while(i < ii)
1161                 {
1162                         sample = p_record_buffer[p_record_buffer_readp]
1163                                 + audio_law_to_s32[*data++];
1164                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1165                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1166                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1167                         *s++ = sample;
1168                         i++;
1169                 }
1170                 fwrite(write_buffer, ii<<1, 1, p_record);
1171                 p_record_length += (ii<<1);
1172                 break;
1173
1174                 case CODEC_STEREO:
1175                 s = (signed short *)write_buffer;
1176                 if (p_record_buffer_dir)
1177                 {
1178                         i = 0;
1179                         while(i < ii)
1180                         {
1181                                 *s++ = audio_law_to_s32[*data++];
1182                                 *s++ = p_record_buffer[p_record_buffer_readp];
1183                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1184                                 i++;
1185                         }
1186                 } else
1187                 {
1188                         i = 0;
1189                         while(i < ii)
1190                         {
1191                                 *s++ = p_record_buffer[p_record_buffer_readp];
1192                                 *s++ = audio_law_to_s32[*data++];
1193                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1194                                 i++;
1195                         }
1196                 }
1197                 fwrite(write_buffer, ii<<2, 1, p_record);
1198                 p_record_length += (ii<<2);
1199                 break;
1200
1201                 case CODEC_8BIT:
1202                 d = write_buffer;
1203                 i = 0;
1204                 while(i < ii)
1205                 {
1206                         sample = p_record_buffer[p_record_buffer_readp]
1207                                 + audio_law_to_s32[*data++];
1208                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1209                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1210                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1211                         *d++ = (sample+0x8000) >> 8;
1212                         i++;
1213                 }
1214                 fwrite(write_buffer, ii, 1, p_record);
1215                 p_record_length += ii;
1216                 break;
1217
1218                 case CODEC_LAW:
1219                 d = write_buffer;
1220                 i = 0;
1221                 while(i < ii)
1222                 {
1223                         sample = p_record_buffer[p_record_buffer_readp]
1224                                 + audio_law_to_s32[*data++];
1225                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1226                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1227                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1228                         *d++ = audio_s16_to_law[sample & 0xffff];
1229                         i++;
1230                 }
1231                 fwrite(write_buffer, ii, 1, p_record);
1232                 p_record_length += ii;
1233                 break;
1234         }
1235         length -= ii;
1236         /* still data */
1237         if (length)
1238                 goto different_again;
1239         /* no data (maybe buffer) */
1240         return;
1241
1242 }
1243
1244