port.cpp

   1 /*****************************************************************************\
   2 **                                                                           **
   3 ** PBX4Linux                                                                 **
   4 **                                                                           **
   5 **---------------------------------------------------------------------------**
   6 ** Copyright: Andreas Eversberg                                              **
   7 **                                                                           **
   8 ** port                                                                      **
   9 **                                                                           **
  10 \*****************************************************************************/
  11
  12 /* HOW TO audio?
  13
  14 Audio flow has two ways:
  15
  16 * from channel to the upper layer
  17   -> sound from mISDN channel
  18   -> announcement from vbox channel
  19
  20 * from the upper layer to the channel
  21   -> sound from remote channel
  22
  23 Audio is required:
  24
  25   -> if local or remote channel is not mISDN
  26   -> if call is recorded (vbox)
  27
  28
  29 Functions:
  30
  31 * PmISDN::txfromup
  32   -> audio from upper layer is buffered for later transmission to channel
  33 * PmISDN::handler
  34   -> buffered audio from upper layer or tones are transmitted via system clock
  35 * mISDN_handler
  36   -> rx-data from port to record() and upper layer
  37   -> tx-data from port (dsp) to record()
  38 * VboxPort::handler
  39   -> streaming announcement to upper layer
  40   -> recording announcement
  41 * VboxPort::message_epoint
  42   -> recording audio message from upper layer
  43
  44
  45
  46 */
  47
  48 #include <stdio.h>
  49 #include <string.h>
  50 #include <stdlib.h>
  51 #include <sys/types.h>
  52 #include <sys/stat.h>
  53 #include <fcntl.h>
  54 #include <unistd.h>
  55 #include <errno.h>
  56 #include <math.h>
  57 #include "main.h"
  58
  59 #define SHORT_MIN -32768
  60 #define SHORT_MAX 32767
  61
  62 class Port *port_first = NULL;
  63
  64 unsigned long port_serial = 1; /* must be 1, because 0== no port */
  65
  66
  67 /* free epointlist relation
  68  */
  69 void Port::free_epointlist(struct epoint_list *epointlist)
  70 {
  71         struct epoint_list *temp, **tempp;
  72
  73         temp = p_epointlist;
  74         tempp = &p_epointlist;
  75         while(temp)
  76         {
  77                 if (temp == epointlist)
  78                         break;
  79
  80                 tempp = &temp->next;
  81                 temp = temp->next;
  82         }
  83         if (temp == 0)
  84         {
  85                 PERROR("SOFTWARE ERROR: epointlist not in port's list.\n");
  86                 return;
  87         }
  88         /* detach */
  89         *tempp=temp->next;
  90
  91         /* free */
  92         PDEBUG(DEBUG_EPOINT, "PORT(%d) removed epoint from port\n", p_serial);
  93         FREE(temp, sizeof(struct epoint_list));
  94         ememuse--;
  95 }
  96
  97
  98 void Port::free_epointid(unsigned long epoint_id)
  99 {
 100         struct epoint_list *temp, **tempp;
 101
 102         temp = p_epointlist;
 103         tempp = &p_epointlist;
 104         while(temp)
 105         {
 106                 if (temp->epoint_id == epoint_id)
 107                         break;
 108
 109                 tempp = &temp->next;
 110                 temp = temp->next;
 111         }
 112         if (temp == 0)
 113         {
 114                 PERROR("epoint_id not in port's list.\n");
 115                 return;
 116         }
 117         /* detach */
 118         *tempp=temp->next;
 119
 120         /* free */
 121         PDEBUG(DEBUG_EPOINT, "PORT(%d) removed epoint from port\n", p_serial);
 122         FREE(temp, sizeof(struct epoint_list));
 123         ememuse--;
 124 }
 125
 126
 127 /* create new epointlist relation
 128  */
 129 struct epoint_list *Port::epointlist_new(unsigned long epoint_id)
 130 {
 131         struct epoint_list *epointlist, **epointlistpointer;
 132
 133         /* epointlist structure */
 134         epointlist = (struct epoint_list *)MALLOC(sizeof(struct epoint_list));
 135         if (!epointlist)
 136                 FATAL("No memory for epointlist\n");
 137         ememuse++;
 138         PDEBUG(DEBUG_EPOINT, "PORT(%d) allocating epoint_list.\n", p_serial);
 139
 140         /* add epoint_list to chain */
 141         epointlist->next = NULL;
 142         epointlistpointer = &p_epointlist;
 143         while(*epointlistpointer)
 144                 epointlistpointer = &((*epointlistpointer)->next);
 145         *epointlistpointer = epointlist;
 146
 147         /* link to epoint */
 148         epointlist->epoint_id = epoint_id;
 149         epointlist->active = 1;
 150
 151         return(epointlist);
 152 }
 153
 154
 155 /*
 156  * port constructor
 157  */
 158 Port::Port(int type, char *portname, struct port_settings *settings)
 159 {
 160         class Port *temp, **tempp;
 161
 162         PDEBUG(DEBUG_PORT, "new port of type %d, name '%s'\n", type, portname);
 163
 164         /* initialize object */
 165         if (settings)
 166                 memcpy(&p_settings, settings, sizeof(struct port_settings));
 167         else
 168         {
 169                 memset(&p_settings, 0, sizeof(p_settings));
 170                 SCPY(p_settings.tones_dir, options.tones_dir);
 171         }
 172         SCPY(p_name, portname);
 173         SCPY(p_tone_dir, p_settings.tones_dir); // just to be sure
 174         p_type = type;
 175         p_serial = port_serial++;
 176         p_tone_fh = -1;
 177         p_tone_fetched = NULL;
 178         p_tone_name[0] = '\0';
 179         p_state = PORT_STATE_IDLE;
 180         p_epointlist = NULL;
 181         memset(&p_callerinfo, 0, sizeof(p_callerinfo));
 182         memset(&p_dialinginfo, 0, sizeof(p_dialinginfo));
 183         memset(&p_connectinfo, 0, sizeof(p_connectinfo));
 184         memset(&p_redirinfo, 0, sizeof(p_redirinfo));
 185         memset(&p_capainfo, 0, sizeof(p_capainfo));
 186         p_echotest = 0;
 187
 188         /* call recording */
 189         p_record = NULL;
 190         p_record_type = 0;
 191         p_record_length = 0;
 192         p_record_skip = 0;
 193         p_record_filename[0] = '\0';
 194         p_record_buffer_readp = 0;
 195         p_record_buffer_writep = 0;
 196         p_record_buffer_dir = 0;
 197
 198         /* append port to chain */
 199         next = NULL;
 200         temp = port_first;
 201         tempp = &port_first;
 202         while(temp)
 203         {
 204                 tempp = &temp->next;
 205                 temp = temp->next;
 206         }
 207         *tempp = this;
 208
 209         classuse++;
 210 }
 211
 212
 213 /*
 214  * port destructor
 215  */
 216 Port::~Port(void)
 217 {
 218         class Port *temp, **tempp;
 219         struct message *message;
 220
 221         if (p_record)
 222                 close_record(0, 0);
 223
 224         classuse--;
 225
 226         PDEBUG(DEBUG_PORT, "removing port of type %d, name '%s'\n", p_type, p_name);
 227
 228         /* disconnect port from endpoint */
 229         while(p_epointlist)
 230         {
 231                 /* send disconnect */
 232                 message = message_create(p_serial, p_epointlist->epoint_id, PORT_TO_EPOINT, MESSAGE_RELEASE);
 233                 message->param.disconnectinfo.cause = 16;
 234                 message->param.disconnectinfo.location = LOCATION_PRIVATE_LOCAL;
 235                 message_put(message);
 236                 /* remove endpoint */
 237                 free_epointlist(p_epointlist);
 238         }
 239
 240         /* remove port from chain */
 241         temp=port_first;
 242         tempp=&port_first;
 243         while(temp)
 244         {
 245                 if (temp == this)
 246                         break;
 247                 tempp = &temp->next;
 248                 temp = temp->next;
 249         }
 250         if (temp == NULL)
 251                 FATAL("PORT(%s) port not in port's list.\n", p_name);
 252         /* detach */
 253         *tempp=this->next;
 254
 255         /* close open tones file */
 256         if (p_tone_fh >= 0)
 257         {
 258                 close(p_tone_fh);
 259                 p_tone_fh = -1;
 260                 fhuse--;
 261         }
 262         p_tone_fetched = NULL;
 263 }
 264
 265 PORT_STATE_NAMES
 266
 267 /* set new endpoint state
 268  */
 269 void Port::new_state(int state)
 270 {
 271         PDEBUG(DEBUG_PORT, "PORT(%s) new state %s --> %s\n", p_name, state_name[p_state], state_name[state]);
 272         p_state = state;
 273 }
 274
 275
 276 /*
 277  * find the port with port_id
 278  */
 279 class Port *find_port_id(unsigned long port_id)
 280 {
 281         class Port *port = port_first;
 282
 283         while(port)
 284         {
 285 //printf("comparing: '%s' with '%s'\n", name, port->name);
 286                 if (port->p_serial == port_id)
 287                         return(port);
 288                 port = port->next;
 289         }
 290
 291         return(NULL);
 292 }
 293
 294
 295 /*
 296  * set echotest
 297  */
 298 void Port::set_echotest(int echotest)
 299 {
 300         p_echotest = echotest;
 301 }
 302
 303
 304 /*
 305  * set the file in the tone directory with the given name
 306  */
 307 void Port::set_tone(char *dir, char *name)
 308 {
 309         int fh;
 310         char filename[128];
 311
 312         if (name == NULL)
 313                 name = "";
 314
 315         /* no counter, no eof, normal speed */
 316         p_tone_counter = 0;
 317         p_tone_eof = 0;
 318         p_tone_speed = 1;
 319         p_tone_codec = CODEC_LAW;
 320
 321         if (p_tone_fh >= 0)
 322         {
 323                 close(p_tone_fh);
 324                 p_tone_fh = -1;
 325                 fhuse--;
 326         }
 327         p_tone_fetched = NULL;
 328
 329         if (name[0])
 330         {
 331                 if (name[0] == '/')
 332                 {
 333                         SPRINT(p_tone_name, "%s", name);
 334                         p_tone_dir[0] = '\0';
 335                 } else
 336                 {
 337                         SCPY(p_tone_dir, dir);
 338                         SCPY(p_tone_name, name);
 339                 }
 340         } else
 341         {
 342                 p_tone_name[0]= '\0';
 343                 p_tone_dir[0]= '\0';
 344                 return;
 345         }
 346
 347         if (!!strncmp(name,"cause_",6))
 348                 return;
 349
 350         /* now we check if the cause exists, otherwhise we use error tone. */
 351         if ((p_tone_fetched=open_tone_fetched(p_tone_dir, p_tone_name, &p_tone_codec, 0, 0)))
 352         {
 353                 p_tone_fetched = NULL;
 354                 return;
 355         }
 356         SPRINT(filename, "%s_loop", p_tone_name);
 357         if ((p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, 0, 0)))
 358         {
 359                 p_tone_fetched = NULL;
 360                 return;
 361         }
 362         SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 363         if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
 364         {
 365                 close(fh);
 366                 return;
 367         }
 368         SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
 369         if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
 370         {
 371                 close(fh);
 372                 return;
 373         }
 374
 375         if (!strcmp(name,"cause_00") || !strcmp(name,"cause_10"))
 376         {
 377                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using release tone\n", p_name, name+6);
 378                 SPRINT(p_tone_name,"release");
 379         } else
 380         if (!strcmp(name,"cause_11"))
 381         {
 382                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using busy tone\n", p_name, name+6);
 383                 SPRINT(p_tone_name,"busy");
 384         } else
 385         {
 386                 PDEBUG(DEBUG_PORT, "PORT(%s) Given Cause 0x%s has no tone, using error tone\n", p_name, name+6);
 387                 SPRINT(p_tone_name,"error");
 388         }
 389 }
 390
 391
 392 /*
 393  * set the file in the tone directory for vbox playback
 394  * also set the play_eof-flag
 395  */
 396 void Port::set_vbox_tone(char *dir, char *name)
 397 {
 398         char filename[256];
 399
 400         p_tone_speed = 1;
 401         p_tone_counter = 0;
 402         p_tone_codec = CODEC_LAW;
 403         p_tone_eof = 1;
 404
 405         if (p_tone_fh >= 0)
 406         {
 407                 close(p_tone_fh);
 408                 p_tone_fh = -1;
 409                 fhuse--;
 410         }
 411         p_tone_fetched = NULL;
 412
 413         SPRINT(p_tone_dir,  dir);
 414         SPRINT(p_tone_name,  name);
 415
 416         /* now we check if the cause exists, otherwhise we use error tone. */
 417         if (p_tone_dir[0])
 418         {
 419                 if ((p_tone_fetched=open_tone_fetched(p_tone_dir, p_tone_name, &p_tone_codec, &p_tone_size, &p_tone_left)))
 420                 {
 421                         PDEBUG(DEBUG_PORT, "PORT(%s) opening fetched tone: %s\n", p_name, p_tone_name);
 422                         return;
 423                 }
 424                 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 425                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) >= 0)
 426                 {
 427                         fhuse++;
 428                         PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
 429                         return;
 430                 }
 431         } else
 432         {
 433                 SPRINT(filename, "%s", p_tone_name);
 434                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) >= 0)
 435                 {
 436                         fhuse++;
 437                         PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
 438                         return;
 439                 }
 440         }
 441 }
 442
 443
 444 /*
 445  * set the file in the given directory for vbox playback
 446  * also set the eof-flag
 447  * also set the counter-flag
 448  */
 449 void Port::set_vbox_play(char *name, int offset)
 450 {
 451         signed long size;
 452         struct message *message;
 453
 454         /* use ser_box_tone() */
 455         set_vbox_tone("", name);
 456         if (p_tone_fh < 0)
 457                 return;
 458
 459         /* enable counter */
 460         p_tone_counter = 1;
 461
 462         /* seek */
 463         if (p_tone_name[0])
 464         {
 465                 /* send message with counter value */
 466                 if (p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 467                 {
 468                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 469                         message->param.counter.current = offset;
 470                         message->param.counter.max = size;
 471                         message_put(message);
 472                 }
 473         }
 474 }
 475
 476
 477 /*
 478  * set the playback speed (for recording playback with different speeds)
 479  */
 480 void Port::set_vbox_speed(int speed)
 481 {
 482         /* enable vbox play mode */
 483         p_tone_speed = speed;
 484 }
 485
 486 /*
 487  * read from the given file as specified in port_set_tone and return sample data
 488  * if the tone ends, the result may be less samples than requested
 489  */
 490 int Port::read_audio(unsigned char *buffer, int length)
 491 {
 492         int l,len;
 493         int nodata=0; /* to detect 0-length files and avoid endless reopen */
 494         char filename[128];
 495         int tone_left_before; /* temp variable to determine the change in p_tone_left */
 496
 497         /* nothing */
 498         if (length == 0)
 499                 return(0);
 500
 501         len = length;
 502
 503         /* if there is no tone set, use silence */
 504         if (!p_tone_name[0])
 505                 return(0);
 506
 507         /* if the file pointer is not open, we open it */
 508         if (p_tone_fh<0 && p_tone_fetched==NULL)
 509         {
 510                 if (p_tone_dir[0])
 511                 {
 512                         SPRINT(filename, "%s", p_tone_name);
 513                         /* if file does not exist */
 514                         if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 515                         {
 516                                 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
 517                                 /* if file does not exist */
 518                                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 519                                 {
 520                                         PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 521                                         goto try_loop;
 522                                 }
 523                                 fhuse++;
 524                         }
 525                 } else
 526                 {
 527                         SPRINT(filename, "%s", p_tone_name);
 528                         /* if file does not exist */
 529                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 530                         {
 531                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
 532                                 goto try_loop;
 533                         }
 534                         fhuse++;
 535                 }
 536                 PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 537         }
 538
 539 read_more:
 540         /* file descriptor is open read data */
 541         tone_left_before = p_tone_left;
 542         if (p_tone_fh >= 0)
 543         {
 544                 l = read_tone(p_tone_fh, buffer, p_tone_codec, len, p_tone_size, &p_tone_left, p_tone_speed);
 545                 if (l<0 || l>len) /* paranoia */
 546                         l=0;
 547                 buffer += l;
 548                 len -= l;
 549         }
 550         if (p_tone_fetched)
 551         {
 552                 l = read_tone_fetched(&p_tone_fetched, buffer, len, p_tone_size, &p_tone_left, p_tone_speed);
 553                 if (l<0 || l>len) /* paranoia */
 554                         l=0;
 555                 buffer += l;
 556                 len -= l;
 557         }
 558
 559         /* if counter is enabled, we check if we have a change */
 560         if (p_tone_counter && p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
 561         {
 562                 /* if we jumed to the next second */
 563                 if (((p_tone_size-p_tone_left)/8000) != (p_tone_size-tone_left_before)/8000)
 564                 {
 565 //printf("\nsize=%d left=%d\n\n",p_tone_size,p_tone_left);
 566                         struct message *message;
 567                         message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
 568                         message->param.counter.current = (p_tone_size-p_tone_left)/8000;
 569                         message->param.counter.max = -1;
 570                         message_put(message);
 571                 }
 572         }
 573
 574         if (len==0)
 575                 return(length-len);
 576
 577         if (p_tone_fh >= 0)
 578         {
 579                 close(p_tone_fh);
 580                 p_tone_fh = -1;
 581                 fhuse--;
 582         }
 583         p_tone_fetched = NULL;
 584
 585         if (l)
 586                 nodata=0;
 587
 588         /* if the file has 0-length */
 589         if (nodata>1)
 590         {
 591                 PDEBUG(DEBUG_PORT, "PORT(%s) 0-length loop: %s\n", p_name, filename);
 592                 p_tone_name[0]=0;
 593                 p_tone_dir[0]=0;
 594                 return(length-len);
 595         }
 596
 597         /* if eof is reached, or if the normal file cannot be opened, continue with the loop file if possible */
 598 try_loop:
 599         if (p_tone_eof && ACTIVE_EPOINT(p_epointlist))
 600         {
 601                 struct message *message;
 602                 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_EOF);
 603                 message_put(message);
 604         }
 605
 606         if (p_tone_dir[0])
 607         {
 608                 /* if file does not exist */
 609                 SPRINT(filename, "%s_loop", p_tone_name);
 610                 if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
 611                 {
 612                         SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
 613                         /* if file does not exist */
 614                         if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 615                         {
 616                                 PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
 617                                 p_tone_dir[0] = '\0';
 618                                 p_tone_name[0] = '\0';
 619                                 return(length-len);
 620                         }
 621                         fhuse++;
 622                 }
 623         } else
 624         {
 625                 SPRINT(filename, "%s_loop", p_tone_name);
 626                 /* if file does not exist */
 627                 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
 628                 {
 629                         PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
 630                         p_tone_dir[0] = '\0';
 631                         p_tone_name[0] = '\0';
 632                         return(length-len);
 633                 }
 634                 fhuse++;
 635         }
 636         nodata++;
 637         PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
 638
 639         /* now we have opened the loop */
 640         goto read_more;
 641 }
 642
 643
 644 /* port handler:
 645  * process transmission clock */
 646 int Port::handler(void)
 647 {
 648         return(0);
 649 }
 650
 651 /* endpoint sends messages to the port
 652  * this is called by the message_epoint inherited by child classes
 653  * therefor a return=1 means: stop, no more processing
 654  */
 655 //extern struct message *dddebug;
 656 int Port::message_epoint(unsigned long epoint_id, int message_id, union parameter *param)
 657 {
 658         /* check if we got audio data from one remote port */
 659         switch(message_id)
 660         {
 661                 case MESSAGE_TONE: /* play tone */
 662                 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);
 663                 set_tone(param->tone.dir,param->tone.name);
 664                 return(1);
 665
 666                 case MESSAGE_VBOX_TONE: /* play tone of answering machine */
 667                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine tone '%s' '%s'\n", p_name, param->tone.dir, param->tone.name);
 668                 set_vbox_tone(param->tone.dir, param->tone.name);
 669                 return(1);
 670
 671                 case MESSAGE_VBOX_PLAY: /* play recording of answering machine */
 672                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine file to play '%s' (offset %d seconds)\n", p_name, param->play.file, param->play.offset);
 673                 set_vbox_play(param->play.file, param->play.offset);
 674                 return(1);
 675
 676                 case MESSAGE_VBOX_PLAY_SPEED: /* set speed of playback (recording of answering machine) */
 677                 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine playback speed %d (times)\n", p_name, param->speed);
 678                 set_vbox_speed(param->speed);
 679                 return(1);
 680
 681         }
 682
 683         return(0);
 684 }
 685
 686
 687 /* wave header structure */
 688 struct fmt {
 689         unsigned short  stereo; /* 1 = mono, 2 = stereo */
 690         unsigned short  channels; /* number of channels */
 691         unsigned long   sample_rate; /* sample rate */
 692         unsigned long   data_rate; /* data rate */
 693         unsigned short  bytes_sample; /* bytes per sample (all channels) */
 694         unsigned short  bits_sample; /* bits per sample (one channel) */
 695 };
 696
 697
 698 /*
 699  * open record file (actually a wave file with empty header which will be
 700  * written before close, because we do not know the size yet)
 701  * type=1 record annoucement,  type=0 record audio stream, type=2 record vbox
 702  */
 703 int Port::open_record(int type, int vbox, int skip, char *extension, int anon_ignore, char *vbox_email, int vbox_email_file)
 704 {
 705         /* RIFFxxxxWAVEfmt xxxx(fmt-size)dataxxxx... */
 706         char dummyheader[8+4+8+sizeof(fmt)+8];
 707         char filename[256];
 708
 709         if (!extension)
 710         {
 711                 PERROR("Port(%d) not an extension\n", p_serial);
 712                 return(0);
 713         }
 714         SCPY(p_record_extension, extension);
 715         p_record_anon_ignore = anon_ignore;
 716         SCPY(p_record_vbox_email, vbox_email);
 717         p_record_vbox_email_file = vbox_email_file;
 718
 719         if (p_record)
 720         {
 721                 PERROR("Port(%d) already recording\n", p_serial);
 722                 return(0);
 723         }
 724
 725         if (vbox != 0)
 726                 SPRINT(filename, "%s/%s/%s/vbox", INSTALL_DATA, options.extensions_dir, p_record_extension);
 727         else
 728                 SPRINT(filename, "%s/%s/%s/recordings", INSTALL_DATA, options.extensions_dir, p_record_extension);
 729         if (mkdir(filename, 0755) < 0)
 730         {
 731                 if (errno != EEXIST)
 732                 {
 733                         PERROR("Port(%d) cannot create directory '%s'\n", p_serial, filename);
 734                         return(0);
 735                 }
 736         }
 737
 738         if (vbox == 1)
 739                 UPRINT(strchr(filename,'\0'), "/announcement");
 740         else
 741                 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);
 742         if (vbox == 2)
 743         {
 744                 p_record_vbox_year = now_tm->tm_year;
 745                 p_record_vbox_mon = now_tm->tm_mon;
 746                 p_record_vbox_mday = now_tm->tm_mday;
 747                 p_record_vbox_hour = now_tm->tm_hour;
 748                 p_record_vbox_min = now_tm->tm_min;
 749         }
 750
 751         /* check, if file exists (especially when an extension calls the same extension) */
 752         if (vbox != 1)
 753         if ((p_record = fopen(filename, "r")))
 754         {
 755                 fclose(p_record);
 756                 SCAT(filename, "_2nd");
 757         }
 758
 759         p_record = fopen(filename, "w");
 760         if (!p_record)
 761         {
 762                 PERROR("Port(%d) cannot record because file cannot be opened '%s'\n", p_serial, filename);
 763                 return(0);
 764         }
 765         fduse++;
 766
 767         p_record_type = type;
 768         p_record_vbox = vbox;
 769         p_record_skip = skip;
 770         p_record_length = 0;
 771         switch(p_record_type)
 772         {
 773                 case CODEC_MONO:
 774                 case CODEC_STEREO:
 775                 case CODEC_8BIT:
 776                 fwrite(dummyheader, sizeof(dummyheader), 1, p_record);
 777                 break;
 778
 779                 case CODEC_LAW:
 780                 break;
 781         }
 782         UCPY(p_record_filename, filename);
 783
 784         PDEBUG(DEBUG_PORT, "Port(%d) recording started with file name '%s'\n", p_serial, filename);
 785         return(1);
 786 }
 787
 788
 789 /*
 790  * close the recoding file, put header in front and rename
 791  */
 792 void Port::close_record(int beep, int mute)
 793 {
 794         static signed short beep_mono[256];
 795         unsigned long size, wsize;
 796         struct fmt fmt;
 797         char filename[512], indexname[512];
 798         FILE *fp;
 799         int i, ii;
 800         char number[256], callerid[256];
 801         char *p;
 802         struct caller_info callerinfo;
 803         char *valid_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_.-!$%&/()=+*;~";
 804
 805         if (!p_record)
 806                 return;
 807         PDEBUG(DEBUG_PORT, "data still in record buffer: %d (dir %d)\n", (p_record_buffer_writep - p_record_buffer_readp) & RECORD_BUFFER_MASK, p_record_buffer_dir);
 808
 809         memcpy(&callerinfo, &p_callerinfo, sizeof(struct caller_info));
 810 //      apply_callerid_restriction(p_record_anon_ignore, callerinfo.id, &callerinfo.ntype, &callerinfo.present, &callerinfo.screen, callerinfo.extension, callerinfo.name);
 811
 812         SCPY(number, p_dialinginfo.id);
 813         SCPY(callerid, numberrize_callerinfo(callerinfo.id, callerinfo.ntype));
 814         if (callerid[0] == '\0')
 815         {
 816                 if (callerinfo.present == INFO_PRESENT_RESTRICTED)
 817                         UCPY(callerid,"anonymous");
 818                 else
 819                         UCPY(callerid,"unknown");
 820         }
 821
 822         /* change verboten digits */
 823         p = callerid;
 824         while((p=strchr(p,'*')))
 825                 *(p++) = 'x';
 826         p = callerid;
 827         while((p=strchr(p,'/')))
 828                 *(p++) = 'x';
 829         p = number;
 830         while((p=strchr(p,'*')))
 831                 *(p++) = 'x';
 832         p = number;
 833         while((p=strchr(p,'/')))
 834                 *(p++) = 'x';
 835         i = 0;
 836         ii = strlen(callerid);
 837         while(i < ii)
 838         {
 839                 if (!strchr(valid_chars, callerid[i]))
 840                         callerid[i] = '_';
 841                 i++;
 842         }
 843         i = 0;
 844         ii = strlen(number);
 845         while(i < ii)
 846         {
 847                 if (!strchr(valid_chars, number[i]))
 848                         number[i] = '_';
 849                 i++;
 850         }
 851
 852         /* mute */
 853         if (mute && p_record_type==CODEC_MONO)
 854         {
 855                 i = p_record_length;
 856                 if (i > mute)
 857                         i = mute;
 858                 fseek(p_record, -(i<<1), SEEK_END);
 859                 p_record_length -= (i<<1);
 860         }
 861         /* add beep to the end of recording */
 862         if (beep && p_record_type==CODEC_MONO)
 863         {
 864                 i = 0;
 865                 while(i < 256)
 866                 {
 867                         beep_mono[i] = (signed short)(sin((double)i / 5.688888888889 * 2.0 * 3.1415927) * 2000.0);
 868                         i++;
 869                 }
 870                 i = 0;
 871                 while(i < beep)
 872                 {
 873                         fwrite(beep_mono, sizeof(beep_mono), 1, p_record);
 874                         i += sizeof(beep_mono);
 875                         p_record_length += sizeof(beep_mono);
 876                 }
 877         }
 878
 879         /* complete header */
 880         switch(p_record_type)
 881         {
 882                 case CODEC_MONO:
 883                 case CODEC_STEREO:
 884                 case CODEC_8BIT:
 885                 /* cue */
 886                 fprintf(p_record, "cue %c%c%c%c%c%c%c%c", 4, 0, 0, 0, 0,0,0,0);
 887
 888                 /* LIST */
 889                 fprintf(p_record, "LIST%c%c%c%cadtl", 4, 0, 0, 0);
 890
 891                 /* go to header */
 892                 fseek(p_record, 0, SEEK_SET);
 893
 894                 /* WAVEfmt xxxx(fmt-size)dataxxxx[data]cue xxxx0000LISTxxxxadtl*/
 895                 size = p_record_length;
 896                 wsize = 4+8+sizeof(fmt)+8+size+8+4+8+4;
 897
 898                 /* RIFF */
 899                 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));
 900
 901                 /* WAVE */
 902                 fprintf(p_record, "WAVE");
 903
 904                 /* fmt */
 905                 fprintf(p_record, "fmt %c%c%c%c", sizeof(fmt), 0, 0, 0);
 906                 switch(p_record_type)
 907                 {
 908                         case CODEC_MONO:
 909                         fmt.stereo = 1;
 910                         fmt.channels = 1;
 911                         fmt.sample_rate = 8000; /* samples/sec */
 912                         fmt.data_rate = 16000; /* full data rate */
 913                         fmt.bytes_sample = 2; /* all channels */
 914                         fmt.bits_sample = 16; /* one channel */
 915                         break;
 916
 917                         case CODEC_STEREO:
 918                         fmt.stereo = 1;
 919                         fmt.channels = 2;
 920                         fmt.sample_rate = 8000; /* samples/sec */
 921                         fmt.data_rate = 32000; /* full data rate */
 922                         fmt.bytes_sample = 4; /* all channels */
 923                         fmt.bits_sample = 16; /* one channel */
 924                         break;
 925
 926                         case CODEC_8BIT:
 927                         fmt.stereo = 1;
 928                         fmt.channels = 1;
 929                         fmt.sample_rate = 8000; /* samples/sec */
 930                         fmt.data_rate = 8000; /* full data rate */
 931                         fmt.bytes_sample = 1; /* all channels */
 932                         fmt.bits_sample = 8; /* one channel */
 933                         break;
 934                 }
 935                 fwrite(&fmt, sizeof(fmt), 1, p_record);
 936
 937                 /* data */
 938                 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));
 939
 940                 /* rename file */
 941                 if (p_record_vbox == 1)
 942                         SPRINT(filename, "%s.wav", p_record_filename);
 943                 else
 944                         SPRINT(filename, "%s_%s-%s.wav", p_record_filename, callerid, number);
 945                 break;
 946
 947                 case CODEC_LAW:
 948                 /* rename file */
 949                 if (p_record_vbox == 1)
 950                         SPRINT(filename, "%s.isdn", p_record_filename);
 951                 else
 952                         SPRINT(filename, "%s_%s-%s.isdn", p_record_filename, callerid, number);
 953                 break;
 954         }
 955
 956         fclose(p_record);
 957         fduse--;
 958         p_record = NULL;
 959
 960         if (rename(p_record_filename, filename) < 0)
 961         {
 962                 PERROR("Port(%d) cannot rename from '%s' to '%s'\n", p_serial, p_record_filename, filename);
 963                 return;
 964         }
 965
 966         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);
 967
 968         if (p_record_vbox == 2)
 969         {
 970                 SPRINT(indexname, "%s/%s/%s/vbox/index", INSTALL_DATA, options.extensions_dir, p_record_extension);
 971                 if ((fp = fopen(indexname,"a")))
 972                 {
 973                         fduse++;
 974
 975                         /* remove path from file name */
 976                         p = filename;
 977                         while(strchr(p, '/'))
 978                                 p = strchr(p, '/')+1;
 979                         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);
 980
 981                         fclose(fp);
 982                         fduse--;
 983                 } else
 984                 {
 985                         PERROR("Port(%d) cannot open index file '%s' to append.\n", p_serial, indexname);
 986                 }
 987
 988                 /* send email with sample*/
 989                 if (p_record_vbox_email[0])
 990                 {
 991                         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);
 992                 }
 993         }
 994 }
 995
 996
 997 /*
 998  * recording function
 999  * Records all data from down and from up into one single stream.
1000  * Both streams may have gaps or jitter.
1001  * A Jitter buffer for both streams is used to compensate jitter.
1002  *
1003  * If one stream (dir) received packets, they are stored to a
1004  * buffer to wait for the other stream (dir), so both streams can
1005  * be combined. If the buffer is full, it's content is written
1006  * without mixing stream. (assuming only one stram (dir) exists.)
1007  * A flag is used to indicate what stream is currently in buffer.
1008  *
1009  * NOTE: First stereo sample (odd) is from down, second is from up.
1010  */
1011 void Port::record(unsigned char *data, int length, int dir_fromup)
1012 {
1013         unsigned char write_buffer[1024], *d;
1014         signed short *s;
1015         int free, i, ii;
1016         signed long sample;
1017
1018         /* no recording */
1019         if (!p_record || !length)
1020                 return;
1021
1022         /* skip data from local caller (dtmf input) */
1023         if (p_record_skip && !dir_fromup)
1024         {
1025                 /* more to skip than we have */
1026                 if (p_record_skip > length)
1027                 {
1028                         p_record_skip -= length;
1029                         return;
1030                 }
1031                 /* less to skip */
1032                 data += p_record_skip;
1033                 length -= p_record_skip;
1034                 p_record_skip = 0;
1035         }
1036
1037 //printf("dir=%d len=%d\n", dir_fromup, length);
1038
1039         free = ((p_record_buffer_readp - p_record_buffer_writep - 1) & RECORD_BUFFER_MASK);
1040
1041 //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);
1042
1043         /* the buffer stores the same data stream */
1044         if (dir_fromup == p_record_buffer_dir)
1045         {
1046 same_again:
1047
1048 //printf("same free=%d length=%d\n", free, length);
1049                 /* first write what we can to the buffer */
1050                 while(free && length)
1051                 {
1052                         p_record_buffer[p_record_buffer_writep] = audio_law_to_s32[*data++];
1053                         p_record_buffer_writep = (p_record_buffer_writep + 1) & RECORD_BUFFER_MASK;
1054                         free--;
1055                         length--;
1056                 }
1057                 /* all written, so we return */
1058                 if (!length)
1059                         return;
1060                 /* still data left, buffer is full, so we need to write a chunk to file */
1061                 switch(p_record_type)
1062                 {
1063                         case CODEC_MONO:
1064                         s = (signed short *)write_buffer;
1065                         i = 0;
1066                         while(i < 256)
1067                         {
1068                                 *s++ = p_record_buffer[p_record_buffer_readp];
1069                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1070                                 i++;
1071                         }
1072                         fwrite(write_buffer, 512, 1, p_record);
1073                         p_record_length += 512;
1074                         break;
1075
1076                         case CODEC_STEREO:
1077                         s = (signed short *)write_buffer;
1078                         if (p_record_buffer_dir)
1079                         {
1080                                 i = 0;
1081                                 while(i < 256)
1082                                 {
1083                                         *s++ = 0; /* nothing from down */
1084                                         *s++ = p_record_buffer[p_record_buffer_readp];
1085                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1086                                         i++;
1087                                 }
1088                         } else
1089                         {
1090                                 i = 0;
1091                                 while(i < 256)
1092                                 {
1093                                         *s++ = p_record_buffer[p_record_buffer_readp];
1094                                         *s++ = 0; /* nothing from up */
1095                                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1096                                         i++;
1097                                 }
1098                         }
1099                         fwrite(write_buffer, 1024, 1, p_record);
1100                         p_record_length += 1024;
1101                         break;
1102
1103                         case CODEC_8BIT:
1104                         d = write_buffer;
1105                         i = 0;
1106                         while(i < 256)
1107                         {
1108                                 *d++ = ((unsigned short)(p_record_buffer[p_record_buffer_readp]+0x8000)) >> 8;
1109                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1110                                 i++;
1111                         }
1112                         fwrite(write_buffer, 512, 1, p_record);
1113                         p_record_length += 512;
1114                         break;
1115
1116                         case CODEC_LAW:
1117                         d = write_buffer;
1118                         i = 0;
1119                         while(i < 256)
1120                         {
1121                                 *d++ = audio_s16_to_law[p_record_buffer[p_record_buffer_readp] & 0xffff];
1122                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1123                                 i++;
1124                         }
1125                         fwrite(write_buffer, 256, 1, p_record);
1126                         p_record_length += 256;
1127                         break;
1128                 }
1129                 /* because we still have data, we write again */
1130                 free += 256;
1131                 goto same_again;
1132         }
1133         /* the buffer stores the other stream */
1134
1135 different_again:
1136         /* if buffer empty, change it */
1137         if (p_record_buffer_readp == p_record_buffer_writep)
1138         {
1139                 p_record_buffer_dir = dir_fromup;
1140                 goto same_again;
1141         }
1142         /* how much data can we mix ? */
1143         ii = (p_record_buffer_writep - p_record_buffer_readp) & RECORD_BUFFER_MASK;
1144         if (length < ii)
1145                 ii = length;
1146
1147         if (ii > 256)
1148                 ii = 256;
1149 //printf("same ii=%d length=%d\n", ii, length);
1150 //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);
1151
1152         /* write data mixed with the buffer */
1153         switch(p_record_type)
1154         {
1155                 case CODEC_MONO:
1156                 s = (signed short *)write_buffer;
1157                 i = 0;
1158                 while(i < ii)
1159                 {
1160                         sample = p_record_buffer[p_record_buffer_readp]
1161                                 + audio_law_to_s32[*data++];
1162                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1163                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1164                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1165                         *s++ = sample;
1166                         i++;
1167                 }
1168                 fwrite(write_buffer, ii<<1, 1, p_record);
1169                 p_record_length += (ii<<1);
1170                 break;
1171
1172                 case CODEC_STEREO:
1173                 s = (signed short *)write_buffer;
1174                 if (p_record_buffer_dir)
1175                 {
1176                         i = 0;
1177                         while(i < ii)
1178                         {
1179                                 *s++ = audio_law_to_s32[*data++];
1180                                 *s++ = p_record_buffer[p_record_buffer_readp];
1181                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1182                                 i++;
1183                         }
1184                 } else
1185                 {
1186                         i = 0;
1187                         while(i < ii)
1188                         {
1189                                 *s++ = p_record_buffer[p_record_buffer_readp];
1190                                 *s++ = audio_law_to_s32[*data++];
1191                                 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1192                                 i++;
1193                         }
1194                 }
1195                 fwrite(write_buffer, ii<<2, 1, p_record);
1196                 p_record_length += (ii<<2);
1197                 break;
1198
1199                 case CODEC_8BIT:
1200                 d = write_buffer;
1201                 i = 0;
1202                 while(i < ii)
1203                 {
1204                         sample = p_record_buffer[p_record_buffer_readp]
1205                                 + audio_law_to_s32[*data++];
1206                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1207                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1208                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1209                         *d++ = (sample+0x8000) >> 8;
1210                         i++;
1211                 }
1212                 fwrite(write_buffer, ii, 1, p_record);
1213                 p_record_length += ii;
1214                 break;
1215
1216                 case CODEC_LAW:
1217                 d = write_buffer;
1218                 i = 0;
1219                 while(i < ii)
1220                 {
1221                         sample = p_record_buffer[p_record_buffer_readp]
1222                                 + audio_law_to_s32[*data++];
1223                         p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1224                         if (sample < SHORT_MIN) sample = SHORT_MIN;
1225                         if (sample > SHORT_MAX) sample = SHORT_MAX;
1226                         *d++ = audio_s16_to_law[sample & 0xffff];
1227                         i++;
1228                 }
1229                 fwrite(write_buffer, ii, 1, p_record);
1230                 p_record_length += ii;
1231                 break;
1232         }
1233         length -= ii;
1234         /* still data */
1235         if (length)
1236                 goto different_again;
1237         /* no data (maybe buffer) */
1238         return;
1239
1240 }
1241
1242