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 int 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 int 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 int 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, const 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 int 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(const char *dir, const 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", SHARE_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", SHARE_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(const char *dir, const 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", SHARE_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(const char *name, int offset)
 452 {
 453         struct lcr_msg *message;
 454
 455         /* use ser_box_tone() */
 456         set_vbox_tone("", name);
 457         if (p_tone_fh < 0)
 458                 return;
 459
 460         /* enable counter */
 461         p_tone_counter = 1;
 462
 463         /* seek */
 464         if (p_tone_name[0])
 465         {
 466                 /* send message with counter value */
 467                 if (p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 468                 {
 469                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 470                         message->param.counter.current = offset;
 471                         message->param.counter.max = p_tone_size;
 472                         message_put(message);
 473                 }
 474         }
 475 }
 476
 477
 478 /*
 479  * set the playback speed (for recording playback with different speeds)
 480  */
 481 void Port::set_vbox_speed(int speed)
 482 {
 483         /* enable vbox play mode */
 484         p_tone_speed = speed;
 485 }
 486
 487 /*
 488  * read from the given file as specified in port_set_tone and return sample data
 489  * if the tone ends, the result may be less samples than requested
 490  */
 491 int Port::read_audio(unsigned char *buffer, int length)
 492 {
 493         int l = 0,len;
 494         int nodata=0; /* to detect 0-length files and avoid endless reopen */
 495         char filename[128];
 496         int tone_left_before; /* temp variable to determine the change in p_tone_left */
 497
 498         /* nothing */
 499         if (length == 0)
 500                 return(0);
 501
 502         len = length;
 503
 504         /* if there is no tone set, use silence */
 505         if (!p_tone_name[0])
 506                 return(0);
 507
 508         /* if the file pointer is not open, we open it */
 509         if (p_tone_fh<0 && p_tone_fetched==NULL)
 510         {
 511                 if (p_tone_dir[0])
 512                 {
 513                         SPRINT(filename, "%s", p_tone_name);
 514                         /* if file does not exist */
 515                         if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 516                         {
 517                                 SPRINT(filename, "%s/%s/%s", SHARE_DATA, p_tone_dir, p_tone_name);
 518                                 /* if file does not exist */
 519                                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 520                                 {
 521                                         PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 522                                         goto try_loop;
 523                                 }
 524                                 fhuse++;
 525                         }
 526                 } else
 527                 {
 528                         SPRINT(filename, "%s", p_tone_name);
 529                         /* if file does not exist */
 530                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 531                         {
 532                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 533                                 goto try_loop;
 534                         }
 535                         fhuse++;
 536                 }
 537                 PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 538         }
 539
 540 read_more:
 541         /* file descriptor is open read data */
 542         tone_left_before = p_tone_left;
 543         if (p_tone_fh >= 0)
 544         {
 545                 l = read_tone(p_tone_fh, buffer, p_tone_codec, len, p_tone_size, &p_tone_left, p_tone_speed);
 546                 if (l<0 || l>len) /* paranoia */
 547                         l=0;
 548                 buffer += l;
 549                 len -= l;
 550         }
 551         if (p_tone_fetched)
 552         {
 553                 l = read_tone_fetched(&p_tone_fetched, buffer, len, p_tone_size, &p_tone_left, p_tone_speed);
 554                 if (l<0 || l>len) /* paranoia */
 555                         l=0;
 556                 buffer += l;
 557                 len -= l;
 558         }
 559
 560         /* if counter is enabled, we check if we have a change */
 561         if (p_tone_counter && p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 562         {
 563                 /* if we jumed to the next second */
 564                 if (((p_tone_size-p_tone_left)/8000) != (p_tone_size-tone_left_before)/8000)
 565                 {
 566 //printf("\nsize=%d left=%d\n\n",p_tone_size,p_tone_left);
 567                         struct lcr_msg *message;
 568                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 569                         message->param.counter.current = (p_tone_size-p_tone_left)/8000;
 570                         message->param.counter.max = -1;
 571                         message_put(message);
 572                 }
 573         }
 574
 575         if (len==0)
 576                 return(length-len);
 577
 578         if (p_tone_fh >= 0)
 579         {
 580                 close(p_tone_fh);
 581                 p_tone_fh = -1;
 582                 fhuse--;
 583         }
 584         p_tone_fetched = NULL;
 585
 586         if (l)
 587                 nodata=0;
 588
 589         /* if the file has 0-length */
 590         if (nodata>1)
 591         {
 592                 PDEBUG(DEBUG_PORT, "PORT(%s) 0-length loop: %s\n", p_name, filename);
 593                 p_tone_name[0]=0;
 594                 p_tone_dir[0]=0;
 595                 return(length-len);
 596         }
 597
 598         /* if eof is reached, or if the normal file cannot be opened, continue with the loop file if possible */
 599 try_loop:
 600         if (p_tone_eof && ACTIVE_EPOINT(p_epointlist))
 601         {
 602                 struct lcr_msg *message;
 603                 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_EOF);
 604                 message_put(message);
 605         }
 606
 607         if (p_tone_dir[0])
 608         {
 609                 /* if file does not exist */
 610                 SPRINT(filename, "%s_loop", p_tone_name);
 611                 if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 612                 {
 613                         SPRINT(filename, "%s/%s/%s_loop", SHARE_DATA, p_tone_dir, p_tone_name);
 614                         /* if file does not exist */
 615                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 616                         {
 617                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
 618                                 p_tone_dir[0] = '\0';
 619                                 p_tone_name[0] = '\0';
 620                                 return(length-len);
 621                         }
 622                         fhuse++;
 623                 }
 624         } else
 625         {
 626                 SPRINT(filename, "%s_loop", 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                         return(length-len);
 634                 }
 635                 fhuse++;
 636         }
 637         nodata++;
 638         PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 639
 640         /* now we have opened the loop */
 641         goto read_more;
 642 }
 643
 644
 645 /* port handler:
 646  * process transmission clock */
 647 int Port::handler(void)
 648 {
 649         return(0);
 650 }
 651
 652 /* endpoint sends messages to the port
 653  * this is called by the message_epoint inherited by child classes
 654  * therefor a return=1 means: stop, no more processing
 655  */
 656 //extern struct lcr_msg *dddebug;
 657 int Port::message_epoint(unsigned int epoint_id, int message_id, union parameter *param)
 658 {
 659         /* check if we got audio data from one remote port */
 660         switch(message_id)
 661         {
 662                 case MESSAGE_TONE: /* play tone */
 663                 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);
 664                 set_tone(param->tone.dir,param->tone.name);
 665                 return(1);
 666
 667                 case MESSAGE_VBOX_TONE: /* play tone of answering machine */
 668                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine tone '%s' '%s'\n", p_name, param->tone.dir, param->tone.name);
 669                 set_vbox_tone(param->tone.dir, param->tone.name);
 670                 return(1);
 671
 672                 case MESSAGE_VBOX_PLAY: /* play recording of answering machine */
 673                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine file to play '%s' (offset %d seconds)\n", p_name, param->play.file, param->play.offset);
 674                 set_vbox_play(param->play.file, param->play.offset);
 675                 return(1);
 676
 677                 case MESSAGE_VBOX_PLAY_SPEED: /* set speed of playback (recording of answering machine) */
 678                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine playback speed %d (times)\n", p_name, param->speed);
 679                 set_vbox_speed(param->speed);
 680                 return(1);
 681
 682         }
 683
 684         return(0);
 685 }
 686
 687
 688 /* wave header structure */
 689 struct fmt {
 690         unsigned short  stereo; /* 1 = mono, 2 = stereo */
 691         unsigned short  channels; /* number of channels */
 692         unsigned int    sample_rate; /* sample rate */
 693         unsigned int    data_rate; /* data rate */
 694         unsigned short  bytes_sample; /* bytes per sample (all channels) */
 695         unsigned short  bits_sample; /* bits per sample (one channel) */
 696 };
 697
 698
 699 /*
 700  * open record file (actually a wave file with empty header which will be
 701  * written before close, because we do not know the size yet)
 702  * type=1 record annoucement,  type=0 record audio stream, type=2 record vbox
 703  */
 704 int Port::open_record(int type, int vbox, int skip, char *extension, int anon_ignore, const char *vbox_email, int vbox_email_file)
 705 {
 706         /* RIFFxxxxWAVEfmt xxxx(fmt-size)dataxxxx... */
 707         char dummyheader[8+4+8+sizeof(fmt)+8];
 708         char filename[256];
 709
 710         if (!extension)
 711         {
 712                 PERROR("Port(%d) not an extension\n", p_serial);
 713                 return(0);
 714         }
 715         SCPY(p_record_extension, extension);
 716         p_record_anon_ignore = anon_ignore;
 717         SCPY(p_record_vbox_email, vbox_email);
 718         p_record_vbox_email_file = vbox_email_file;
 719
 720         if (p_record)
 721         {
 722                 PERROR("Port(%d) already recording\n", p_serial);
 723                 return(0);
 724         }
 725
 726         if (vbox != 0)
 727                 SPRINT(filename, "%s/%s/vbox", EXTENSION_DATA, p_record_extension);
 728         else
 729                 SPRINT(filename, "%s/%s/recordings", EXTENSION_DATA, p_record_extension);
 730         if (mkdir(filename, 0755) < 0)
 731         {
 732                 if (errno != EEXIST)
 733                 {
 734                         PERROR("Port(%d) cannot create directory '%s'\n", p_serial, filename);
 735                         return(0);
 736                 }
 737         }
 738
 739         if (vbox == 1)
 740                 UPRINT(strchr(filename,'\0'), "/announcement");
 741         else
 742                 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);
 743         if (vbox == 2)
 744         {
 745                 p_record_vbox_year = now_tm->tm_year;
 746                 p_record_vbox_mon = now_tm->tm_mon;
 747                 p_record_vbox_mday = now_tm->tm_mday;
 748                 p_record_vbox_hour = now_tm->tm_hour;
 749                 p_record_vbox_min = now_tm->tm_min;
 750         }
 751
 752         /* check, if file exists (especially when an extension calls the same extension) */
 753         if (vbox != 1)
 754         if ((p_record = fopen(filename, "r")))
 755         {
 756                 fclose(p_record);
 757                 SCAT(filename, "_2nd");
 758         }
 759
 760         p_record = fopen(filename, "w");
 761         if (!p_record)
 762         {
 763                 PERROR("Port(%d) cannot record because file cannot be opened '%s'\n", p_serial, filename);
 764                 return(0);
 765         }
 766         fduse++;
 767
 768         p_record_type = type;
 769         p_record_vbox = vbox;
 770         p_record_skip = skip;
 771         p_record_length = 0;
 772         switch(p_record_type)
 773         {
 774                 case CODEC_MONO:
 775                 case CODEC_STEREO:
 776                 case CODEC_8BIT:
 777                 fwrite(dummyheader, sizeof(dummyheader), 1, p_record);
 778                 break;
 779
 780                 case CODEC_LAW:
 781                 break;
 782         }
 783         UCPY(p_record_filename, filename);
 784
 785         PDEBUG(DEBUG_PORT, "Port(%d) recording started with file name '%s'\n", p_serial, filename);
 786         return(1);
 787 }
 788
 789
 790 /*
 791  * close the recoding file, put header in front and rename
 792  */
 793 void Port::close_record(int beep, int mute)
 794 {
 795         static signed short beep_mono[256];
 796         unsigned int size = 0, wsize = 0;
 797         struct fmt fmt;
 798         char filename[512], indexname[512];
 799         FILE *fp;
 800         int i, ii;
 801         char number[256], callerid[256];
 802         char *p;
 803         struct caller_info callerinfo;
 804         const char *valid_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_.-!$%&/()=+*;~";
 805
 806         if (!p_record)
 807                 return;
 808         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);
 809
 810         memcpy(&callerinfo, &p_callerinfo, sizeof(struct caller_info));
 811 //      apply_callerid_restriction(p_record_anon_ignore, callerinfo.id, &callerinfo.ntype, &callerinfo.present, &callerinfo.screen, callerinfo.extension, callerinfo.name);
 812
 813         SCPY(number, p_dialinginfo.id);
 814         SCPY(callerid, numberrize_callerinfo(callerinfo.id, callerinfo.ntype, options.national, options.international));
 815         if (callerid[0] == '\0')
 816         {
 817                 if (callerinfo.present == INFO_PRESENT_RESTRICTED)
 818                         UCPY(callerid,"anonymous");
 819                 else
 820                         UCPY(callerid,"unknown");
 821         }
 822
 823         /* change verboten digits */
 824         p = callerid;
 825         while((p=strchr(p,'*')))
 826                 *(p++) = 'x';
 827         p = callerid;
 828         while((p=strchr(p,'/')))
 829                 *(p++) = 'x';
 830         p = number;
 831         while((p=strchr(p,'*')))
 832                 *(p++) = 'x';
 833         p = number;
 834         while((p=strchr(p,'/')))
 835                 *(p++) = 'x';
 836         i = 0;
 837         ii = strlen(callerid);
 838         while(i < ii)
 839         {
 840                 if (!strchr(valid_chars, callerid[i]))
 841                         callerid[i] = '_';
 842                 i++;
 843         }
 844         i = 0;
 845         ii = strlen(number);
 846         while(i < ii)
 847         {
 848                 if (!strchr(valid_chars, number[i]))
 849                         number[i] = '_';
 850                 i++;
 851         }
 852
 853         /* mute */
 854         if (mute && p_record_type==CODEC_MONO)
 855         {
 856                 i = p_record_length;
 857                 if (i > mute)
 858                         i = mute;
 859                 fseek(p_record, -(i<<1), SEEK_END);
 860                 p_record_length -= (i<<1);
 861         }
 862         /* add beep to the end of recording */
 863         if (beep && p_record_type==CODEC_MONO)
 864         {
 865                 i = 0;
 866                 while(i < 256)
 867                 {
 868                         beep_mono[i] = (signed short)(sin((double)i / 5.688888888889 * 2.0 * 3.1415927) * 2000.0);
 869                         i++;
 870                 }
 871                 i = 0;
 872                 while(i < beep)
 873                 {
 874                         fwrite(beep_mono, sizeof(beep_mono), 1, p_record);
 875                         i += sizeof(beep_mono);
 876                         p_record_length += sizeof(beep_mono);
 877                 }
 878         }
 879
 880         /* complete header */
 881         switch(p_record_type)
 882         {
 883                 case CODEC_MONO:
 884                 case CODEC_STEREO:
 885                 case CODEC_8BIT:
 886                 /* cue */
 887                 fprintf(p_record, "cue %c%c%c%c%c%c%c%c", 4, 0, 0, 0, 0,0,0,0);
 888
 889                 /* LIST */
 890                 fprintf(p_record, "LIST%c%c%c%cadtl", 4, 0, 0, 0);
 891
 892                 /* go to header */
 893                 fseek(p_record, 0, SEEK_SET);
 894
 895                 /* WAVEfmt xxxx(fmt-size)dataxxxx[data]cue xxxx0000LISTxxxxadtl*/
 896                 size = p_record_length;
 897                 wsize = 4+8+sizeof(fmt)+8+size+8+4+8+4;
 898
 899                 /* RIFF */
 900                 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));
 901
 902                 /* WAVE */
 903                 fprintf(p_record, "WAVE");
 904
 905                 /* fmt */
 906                 fprintf(p_record, "fmt %c%c%c%c", (unsigned int)sizeof(fmt), 0, 0, 0);
 907                 switch(p_record_type)
 908                 {
 909                         case CODEC_MONO:
 910                         fmt.stereo = 1;
 911                         fmt.channels = 1;
 912                         fmt.sample_rate = 8000; /* samples/sec */
 913                         fmt.data_rate = 16000; /* full data rate */
 914                         fmt.bytes_sample = 2; /* all channels */
 915                         fmt.bits_sample = 16; /* one channel */
 916                         break;
 917
 918                         case CODEC_STEREO:
 919                         fmt.stereo = 1;
 920                         fmt.channels = 2;
 921                         fmt.sample_rate = 8000; /* samples/sec */
 922                         fmt.data_rate = 32000; /* full data rate */
 923                         fmt.bytes_sample = 4; /* all channels */
 924                         fmt.bits_sample = 16; /* one channel */
 925                         break;
 926
 927                         case CODEC_8BIT:
 928                         fmt.stereo = 1;
 929                         fmt.channels = 1;
 930                         fmt.sample_rate = 8000; /* samples/sec */
 931                         fmt.data_rate = 8000; /* full data rate */
 932                         fmt.bytes_sample = 1; /* all channels */
 933                         fmt.bits_sample = 8; /* one channel */
 934                         break;
 935                 }
 936                 fwrite(&fmt, sizeof(fmt), 1, p_record);
 937
 938                 /* data */
 939                 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));
 940
 941                 /* rename file */
 942                 if (p_record_vbox == 1)
 943                         SPRINT(filename, "%s.wav", p_record_filename);
 944                 else
 945                         SPRINT(filename, "%s_%s-%s.wav", p_record_filename, callerid, number);
 946                 break;
 947
 948                 case CODEC_LAW:
 949                 /* rename file */
 950                 if (p_record_vbox == 1)
 951                         SPRINT(filename, "%s.isdn", p_record_filename);
 952                 else
 953                         SPRINT(filename, "%s_%s-%s.isdn", p_record_filename, callerid, number);
 954                 break;
 955         }
 956
 957         fclose(p_record);
 958         fduse--;
 959         p_record = NULL;
 960
 961         if (rename(p_record_filename, filename) < 0)
 962         {
 963                 PERROR("Port(%d) cannot rename from '%s' to '%s'\n", p_serial, p_record_filename, filename);
 964                 return;
 965         }
 966
 967         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);
 968
 969         if (p_record_vbox == 2)
 970         {
 971                 SPRINT(indexname, "%s/%s/vbox/index", EXTENSION_DATA, p_record_extension);
 972                 if ((fp = fopen(indexname,"a")))
 973                 {
 974                         fduse++;
 975
 976                         /* remove path from file name */
 977                         p = filename;
 978                         while(strchr(p, '/'))
 979                                 p = strchr(p, '/')+1;
 980                         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);
 981
 982                         fclose(fp);
 983                         fduse--;
 984                 } else
 985                 {
 986                         PERROR("Port(%d) cannot open index file '%s' to append.\n", p_serial, indexname);
 987                 }
 988
 989                 /* send email with sample*/
 990                 if (p_record_vbox_email[0])
 991                 {
 992                         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);
 993                 }
 994         }
 995 }
 996
 997
 998 /*
 999  * recording function
1000  * Records all data from down and from up into one single stream.
1001  * Both streams may have gaps or jitter.
1002  * A Jitter buffer for both streams is used to compensate jitter.
1003  *
1004  * If one stream (dir) received packets, they are stored to a
1005  * buffer to wait for the other stream (dir), so both streams can
1006  * be combined. If the buffer is full, it's content is written
1007  * without mixing stream. (assuming only one stram (dir) exists.)
1008  * A flag is used to indicate what stream is currently in buffer.
1009  *
1010  * NOTE: First stereo sample (odd) is from down, second is from up.
1011  */
1012 void Port::record(unsigned char *data, int length, int dir_fromup)
1013 {
1014         unsigned char write_buffer[1024], *d;
1015         signed short *s;
1016         int free, i, ii;
1017         signed int sample;
1018
1019         /* no recording */
1020         if (!p_record || !length)
1021                 return;
1022
1023         /* skip data from local caller (dtmf input) */
1024         if (p_record_skip && !dir_fromup)
1025         {
1026                 /* more to skip than we have */
1027                 if (p_record_skip > length)
1028                 {
1029                         p_record_skip -= length;
1030                         return;
1031                 }
1032                 /* less to skip */
1033                 data += p_record_skip;
1034                 length -= p_record_skip;
1035                 p_record_skip = 0;
1036         }
1037
1038 //printf("dir=%d len=%d\n", dir_fromup, length);
1039
1040         free = ((p_record_buffer_readp - p_record_buffer_writep - 1) & RECORD_BUFFER_MASK);
1041
1042 //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);
1043
1044         /* the buffer stores the same data stream */
1045         if (dir_fromup == p_record_buffer_dir)
1046         {
1047 same_again:
1048
1049 //printf("same free=%d length=%d\n", free, length);
1050                 /* first write what we can to the buffer */
1051                 while(free && length)
1052                 {
1053                         p_record_buffer[p_record_buffer_writep] = audio_law_to_s32[*data++];
1054                         p_record_buffer_writep = (p_record_buffer_writep + 1) & RECORD_BUFFER_MASK;
1055                         free--;
1056                         length--;
1057                 }
1058                 /* all written, so we return */
1059                 if (!length)
1060                         return;
1061                 /* still data left, buffer is full, so we need to write a chunk to file */
1062                 switch(p_record_type)
1063                 {
1064                         case CODEC_MONO:
1065                         s = (signed short *)write_buffer;
1066                         i = 0;
1067                         while(i < 256)
1068                         {
1069                                 *s++ = p_record_buffer[p_record_buffer_readp];
1070                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1071                                 i++;
1072                         }
1073                         fwrite(write_buffer, 512, 1, p_record);
1074                         p_record_length += 512;
1075                         break;
1076
1077                         case CODEC_STEREO:
1078                         s = (signed short *)write_buffer;
1079                         if (p_record_buffer_dir)
1080                         {
1081                                 i = 0;
1082                                 while(i < 256)
1083                                 {
1084                                         *s++ = 0; /* nothing from down */
1085                                         *s++ = p_record_buffer[p_record_buffer_readp];
1086                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1087                                         i++;
1088                                 }
1089                         } else
1090                         {
1091                                 i = 0;
1092                                 while(i < 256)
1093                                 {
1094                                         *s++ = p_record_buffer[p_record_buffer_readp];
1095                                         *s++ = 0; /* nothing from up */
1096                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1097                                         i++;
1098                                 }
1099                         }
1100                         fwrite(write_buffer, 1024, 1, p_record);
1101                         p_record_length += 1024;
1102                         break;
1103
1104                         case CODEC_8BIT:
1105                         d = write_buffer;
1106                         i = 0;
1107                         while(i < 256)
1108                         {
1109                                 *d++ = ((unsigned short)(p_record_buffer[p_record_buffer_readp]+0x8000)) >> 8;
1110                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1111                                 i++;
1112                         }
1113                         fwrite(write_buffer, 512, 1, p_record);
1114                         p_record_length += 512;
1115                         break;
1116
1117                         case CODEC_LAW:
1118                         d = write_buffer;
1119                         i = 0;
1120                         while(i < 256)
1121                         {
1122                                 *d++ = audio_s16_to_law[p_record_buffer[p_record_buffer_readp] & 0xffff];
1123                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1124                                 i++;
1125                         }
1126                         fwrite(write_buffer, 256, 1, p_record);
1127                         p_record_length += 256;
1128                         break;
1129                 }
1130                 /* because we still have data, we write again */
1131                 free += 256;
1132                 goto same_again;
1133         }
1134         /* the buffer stores the other stream */
1135
1136 different_again:
1137         /* if buffer empty, change it */
1138         if (p_record_buffer_readp == p_record_buffer_writep)
1139         {
1140                 p_record_buffer_dir = dir_fromup;
1141                 goto same_again;
1142         }
1143         /* how much data can we mix ? */
1144         ii = (p_record_buffer_writep - p_record_buffer_readp) & RECORD_BUFFER_MASK;
1145         if (length < ii)
1146                 ii = length;
1147
1148         if (ii > 256)
1149                 ii = 256;
1150 //printf("same ii=%d length=%d\n", ii, length);
1151 //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);
1152
1153         /* write data mixed with the buffer */
1154         switch(p_record_type)
1155         {
1156                 case CODEC_MONO:
1157                 s = (signed short *)write_buffer;
1158                 i = 0;
1159                 while(i < ii)
1160                 {
1161                         sample = p_record_buffer[p_record_buffer_readp]
1162                                 + audio_law_to_s32[*data++];
1163                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1164                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1165                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1166                         *s++ = sample;
1167                         i++;
1168                 }
1169                 fwrite(write_buffer, ii<<1, 1, p_record);
1170                 p_record_length += (ii<<1);
1171                 break;
1172
1173                 case CODEC_STEREO:
1174                 s = (signed short *)write_buffer;
1175                 if (p_record_buffer_dir)
1176                 {
1177                         i = 0;
1178                         while(i < ii)
1179                         {
1180                                 *s++ = audio_law_to_s32[*data++];
1181                                 *s++ = p_record_buffer[p_record_buffer_readp];
1182                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1183                                 i++;
1184                         }
1185                 } else
1186                 {
1187                         i = 0;
1188                         while(i < ii)
1189                         {
1190                                 *s++ = p_record_buffer[p_record_buffer_readp];
1191                                 *s++ = audio_law_to_s32[*data++];
1192                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1193                                 i++;
1194                         }
1195                 }
1196                 fwrite(write_buffer, ii<<2, 1, p_record);
1197                 p_record_length += (ii<<2);
1198                 break;
1199
1200                 case CODEC_8BIT:
1201                 d = write_buffer;
1202                 i = 0;
1203                 while(i < ii)
1204                 {
1205                         sample = p_record_buffer[p_record_buffer_readp]
1206                                 + audio_law_to_s32[*data++];
1207                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1208                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1209                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1210                         *d++ = (sample+0x8000) >> 8;
1211                         i++;
1212                 }
1213                 fwrite(write_buffer, ii, 1, p_record);
1214                 p_record_length += ii;
1215                 break;
1216
1217                 case CODEC_LAW:
1218                 d = write_buffer;
1219                 i = 0;
1220                 while(i < ii)
1221                 {
1222                         sample = p_record_buffer[p_record_buffer_readp]
1223                                 + audio_law_to_s32[*data++];
1224                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1225                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1226                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1227                         *d++ = audio_s16_to_law[sample & 0xffff];
1228                         i++;
1229                 }
1230                 fwrite(write_buffer, ii, 1, p_record);
1231                 p_record_length += ii;
1232                 break;
1233         }
1234         length -= ii;
1235         /* still data */
1236         if (length)
1237                 goto different_again;
1238         /* no data (maybe buffer) */
1239         return;
1240
1241 }
1242
1243