1 /*****************************************************************************\
5 **---------------------------------------------------------------------------**
6 ** Copyright: Andreas Eversberg **
10 \*****************************************************************************/
14 Audio flow has two ways:
16 * from channel to the upper layer
17 -> sound from mISDN channel
18 -> announcement from vbox channel
20 * from the upper layer to the channel
21 -> sound from remote channel
25 -> if local or remote channel is not mISDN
26 -> if call is recorded (vbox)
32 -> audio from upper layer is buffered for later transmission to channel
34 -> buffered audio from upper layer or tones are transmitted via system clock
36 -> rx-data from port to record() and upper layer
37 -> tx-data from port (dsp) to record()
39 -> streaming announcement to upper layer
40 -> recording announcement
41 * VboxPort::message_epoint
42 -> recording audio message from upper layer
50 #define SHORT_MIN -32768
51 #define SHORT_MAX 32767
53 class Port *port_first = NULL;
55 unsigned long port_serial = 1; /* must be 1, because 0== no port */
58 /* free epointlist relation
60 void Port::free_epointlist(struct epoint_list *epointlist)
62 struct epoint_list *temp, **tempp;
65 tempp = &p_epointlist;
68 if (temp == epointlist)
76 PERROR("SOFTWARE ERROR: epointlist not in port's list.\n");
83 PDEBUG(DEBUG_EPOINT, "PORT(%d) removed epoint from port\n", p_serial);
84 FREE(temp, sizeof(struct epoint_list));
89 void Port::free_epointid(unsigned long epoint_id)
91 struct epoint_list *temp, **tempp;
94 tempp = &p_epointlist;
97 if (temp->epoint_id == epoint_id)
105 PERROR("epoint_id not in port's list.\n");
112 PDEBUG(DEBUG_EPOINT, "PORT(%d) removed epoint from port\n", p_serial);
113 FREE(temp, sizeof(struct epoint_list));
118 /* create new epointlist relation
120 struct epoint_list *Port::epointlist_new(unsigned long epoint_id)
122 struct epoint_list *epointlist, **epointlistpointer;
124 /* epointlist structure */
125 epointlist = (struct epoint_list *)MALLOC(sizeof(struct epoint_list));
127 FATAL("No memory for epointlist\n");
129 PDEBUG(DEBUG_EPOINT, "PORT(%d) allocating epoint_list.\n", p_serial);
131 /* add epoint_list to chain */
132 epointlist->next = NULL;
133 epointlistpointer = &p_epointlist;
134 while(*epointlistpointer)
135 epointlistpointer = &((*epointlistpointer)->next);
136 *epointlistpointer = epointlist;
139 epointlist->epoint_id = epoint_id;
140 epointlist->active = 1;
149 Port::Port(int type, char *portname, struct port_settings *settings)
151 class Port *temp, **tempp;
153 PDEBUG(DEBUG_PORT, "new port of type %d, name '%s'\n", type, portname);
155 /* initialize object */
157 memcpy(&p_settings, settings, sizeof(struct port_settings));
160 memset(&p_settings, 0, sizeof(p_settings));
161 SCPY(p_settings.tones_dir, options.tones_dir);
163 SCPY(p_name, portname);
164 SCPY(p_tone_dir, p_settings.tones_dir); // just to be sure
166 p_serial = port_serial++;
168 p_tone_fetched = NULL;
169 p_tone_name[0] = '\0';
170 p_state = PORT_STATE_IDLE;
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));
184 p_record_filename[0] = '\0';
185 p_record_buffer_readp = 0;
186 p_record_buffer_writep = 0;
187 p_record_buffer_dir = 0;
189 /* append port to chain */
209 class Port *temp, **tempp;
210 struct lcr_msg *message;
217 PDEBUG(DEBUG_PORT, "removing port of type %d, name '%s'\n", p_type, p_name);
219 /* disconnect port from endpoint */
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);
231 /* remove port from chain */
242 FATAL("PORT(%s) port not in port's list.\n", p_name);
246 /* close open tones file */
253 p_tone_fetched = NULL;
258 /* set new endpoint state
260 void Port::new_state(int state)
262 PDEBUG(DEBUG_PORT, "PORT(%s) new state %s --> %s\n", p_name, state_name[p_state], state_name[state]);
268 * find the port with port_id
270 class Port *find_port_id(unsigned long port_id)
272 class Port *port = port_first;
276 //printf("comparing: '%s' with '%s'\n", name, port->name);
277 if (port->p_serial == port_id)
289 void Port::set_echotest(int echotest)
291 p_echotest = echotest;
296 * set the file in the tone directory with the given name
298 void Port::set_tone(char *dir, char *name)
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")))
311 SCPY(p_tone_dir, dir);
312 SCPY(p_tone_name, name);
317 /* no counter, no eof, normal speed */
321 p_tone_codec = CODEC_LAW;
329 p_tone_fetched = NULL;
335 SPRINT(p_tone_name, "%s", name);
336 p_tone_dir[0] = '\0';
339 SCPY(p_tone_dir, dir);
340 SCPY(p_tone_name, name);
344 p_tone_name[0]= '\0';
349 if (!!strncmp(name,"cause_",6))
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)))
355 p_tone_fetched = NULL;
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)))
361 p_tone_fetched = NULL;
364 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
365 if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
370 SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
371 if ((fh=open_tone(filename, &p_tone_codec, 0, 0)) >= 0)
377 if (!strcmp(name,"cause_00") || !strcmp(name,"cause_10"))
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");
382 if (!strcmp(name,"cause_11"))
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");
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");
395 * set the file in the tone directory for vbox playback
396 * also set the play_eof-flag
398 void Port::set_vbox_tone(char *dir, char *name)
404 p_tone_codec = CODEC_LAW;
413 p_tone_fetched = NULL;
415 SPRINT(p_tone_dir, dir);
416 SPRINT(p_tone_name, name);
418 /* now we check if the cause exists, otherwhise we use error tone. */
421 if ((p_tone_fetched=open_tone_fetched(p_tone_dir, p_tone_name, &p_tone_codec, &p_tone_size, &p_tone_left)))
423 PDEBUG(DEBUG_PORT, "PORT(%s) opening fetched tone: %s\n", p_name, p_tone_name);
426 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
427 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) >= 0)
430 PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
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)
439 PDEBUG(DEBUG_PORT, "PORT(%s) opening tone: %s\n", p_name, filename);
447 * set the file in the given directory for vbox playback
448 * also set the eof-flag
449 * also set the counter-flag
451 void Port::set_vbox_play(char *name, int offset)
454 struct lcr_msg *message;
456 /* use ser_box_tone() */
457 set_vbox_tone("", name);
467 /* send message with counter value */
468 if (p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
470 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
471 message->param.counter.current = offset;
472 message->param.counter.max = size;
473 message_put(message);
480 * set the playback speed (for recording playback with different speeds)
482 void Port::set_vbox_speed(int speed)
484 /* enable vbox play mode */
485 p_tone_speed = speed;
489 * read from the given file as specified in port_set_tone and return sample data
490 * if the tone ends, the result may be less samples than requested
492 int Port::read_audio(unsigned char *buffer, int length)
495 int nodata=0; /* to detect 0-length files and avoid endless reopen */
497 int tone_left_before; /* temp variable to determine the change in p_tone_left */
505 /* if there is no tone set, use silence */
509 /* if the file pointer is not open, we open it */
510 if (p_tone_fh<0 && p_tone_fetched==NULL)
514 SPRINT(filename, "%s", p_tone_name);
515 /* if file does not exist */
516 if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
518 SPRINT(filename, "%s/%s/%s", INSTALL_DATA, p_tone_dir, p_tone_name);
519 /* if file does not exist */
520 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
522 PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
529 SPRINT(filename, "%s", p_tone_name);
530 /* if file does not exist */
531 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
533 PDEBUG(DEBUG_PORT, "PORT(%s) no tone: %s\n", p_name, filename);
538 PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
542 /* file descriptor is open read data */
543 tone_left_before = p_tone_left;
546 l = read_tone(p_tone_fh, buffer, p_tone_codec, len, p_tone_size, &p_tone_left, p_tone_speed);
547 if (l<0 || l>len) /* paranoia */
554 l = read_tone_fetched(&p_tone_fetched, buffer, len, p_tone_size, &p_tone_left, p_tone_speed);
555 if (l<0 || l>len) /* paranoia */
561 /* if counter is enabled, we check if we have a change */
562 if (p_tone_counter && p_tone_size>=0 && ACTIVE_EPOINT(p_epointlist))
564 /* if we jumed to the next second */
565 if (((p_tone_size-p_tone_left)/8000) != (p_tone_size-tone_left_before)/8000)
567 //printf("\nsize=%d left=%d\n\n",p_tone_size,p_tone_left);
568 struct lcr_msg *message;
569 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_COUNTER);
570 message->param.counter.current = (p_tone_size-p_tone_left)/8000;
571 message->param.counter.max = -1;
572 message_put(message);
585 p_tone_fetched = NULL;
590 /* if the file has 0-length */
593 PDEBUG(DEBUG_PORT, "PORT(%s) 0-length loop: %s\n", p_name, filename);
599 /* if eof is reached, or if the normal file cannot be opened, continue with the loop file if possible */
601 if (p_tone_eof && ACTIVE_EPOINT(p_epointlist))
603 struct lcr_msg *message;
604 message = message_create(p_serial, ACTIVE_EPOINT(p_epointlist), PORT_TO_EPOINT, MESSAGE_TONE_EOF);
605 message_put(message);
610 /* if file does not exist */
611 SPRINT(filename, "%s_loop", p_tone_name);
612 if (!(p_tone_fetched=open_tone_fetched(p_tone_dir, filename, &p_tone_codec, &p_tone_size, &p_tone_left)))
614 SPRINT(filename, "%s/%s/%s_loop", INSTALL_DATA, p_tone_dir, p_tone_name);
615 /* if file does not exist */
616 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
618 PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
619 p_tone_dir[0] = '\0';
620 p_tone_name[0] = '\0';
627 SPRINT(filename, "%s_loop", p_tone_name);
628 /* if file does not exist */
629 if ((p_tone_fh=open_tone(filename, &p_tone_codec, &p_tone_size, &p_tone_left)) < 0)
631 PDEBUG(DEBUG_PORT, "PORT(%s) no tone loop: %s\n",p_name, filename);
632 p_tone_dir[0] = '\0';
633 p_tone_name[0] = '\0';
639 PDEBUG(DEBUG_PORT, "PORT(%s) opening %stone: %s\n", p_name, p_tone_fetched?"fetched ":"", filename);
641 /* now we have opened the loop */
647 * process transmission clock */
648 int Port::handler(void)
653 /* endpoint sends messages to the port
654 * this is called by the message_epoint inherited by child classes
655 * therefor a return=1 means: stop, no more processing
657 //extern struct lcr_msg *dddebug;
658 int Port::message_epoint(unsigned long epoint_id, int message_id, union parameter *param)
660 /* check if we got audio data from one remote port */
663 case MESSAGE_TONE: /* play tone */
664 PDEBUG(DEBUG_PORT, "PORT(%s) isdn port with (caller id %s) setting tone '%s' dir '%s'\n", p_name, p_callerinfo.id, param->tone.name, param->tone.dir);
665 set_tone(param->tone.dir,param->tone.name);
668 case MESSAGE_VBOX_TONE: /* play tone of answering machine */
669 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine tone '%s' '%s'\n", p_name, param->tone.dir, param->tone.name);
670 set_vbox_tone(param->tone.dir, param->tone.name);
673 case MESSAGE_VBOX_PLAY: /* play recording of answering machine */
674 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine file to play '%s' (offset %d seconds)\n", p_name, param->play.file, param->play.offset);
675 set_vbox_play(param->play.file, param->play.offset);
678 case MESSAGE_VBOX_PLAY_SPEED: /* set speed of playback (recording of answering machine) */
679 PDEBUG(DEBUG_PORT, "PORT(%s) set answering machine playback speed %d (times)\n", p_name, param->speed);
680 set_vbox_speed(param->speed);
689 /* wave header structure */
691 unsigned short stereo; /* 1 = mono, 2 = stereo */
692 unsigned short channels; /* number of channels */
693 unsigned long sample_rate; /* sample rate */
694 unsigned long data_rate; /* data rate */
695 unsigned short bytes_sample; /* bytes per sample (all channels) */
696 unsigned short bits_sample; /* bits per sample (one channel) */
701 * open record file (actually a wave file with empty header which will be
702 * written before close, because we do not know the size yet)
703 * type=1 record annoucement, type=0 record audio stream, type=2 record vbox
705 int Port::open_record(int type, int vbox, int skip, char *extension, int anon_ignore, char *vbox_email, int vbox_email_file)
707 /* RIFFxxxxWAVEfmt xxxx(fmt-size)dataxxxx... */
708 char dummyheader[8+4+8+sizeof(fmt)+8];
713 PERROR("Port(%d) not an extension\n", p_serial);
716 SCPY(p_record_extension, extension);
717 p_record_anon_ignore = anon_ignore;
718 SCPY(p_record_vbox_email, vbox_email);
719 p_record_vbox_email_file = vbox_email_file;
723 PERROR("Port(%d) already recording\n", p_serial);
728 SPRINT(filename, "%s/%s/%s/vbox", INSTALL_DATA, options.extensions_dir, p_record_extension);
730 SPRINT(filename, "%s/%s/%s/recordings", INSTALL_DATA, options.extensions_dir, p_record_extension);
731 if (mkdir(filename, 0755) < 0)
735 PERROR("Port(%d) cannot create directory '%s'\n", p_serial, filename);
741 UPRINT(strchr(filename,'\0'), "/announcement");
743 UPRINT(strchr(filename,'\0'), "/%04d-%02d-%02d_%02d%02d%02d", now_tm->tm_year+1900, now_tm->tm_mon+1, now_tm->tm_mday, now_tm->tm_hour, now_tm->tm_min, now_tm->tm_sec);
746 p_record_vbox_year = now_tm->tm_year;
747 p_record_vbox_mon = now_tm->tm_mon;
748 p_record_vbox_mday = now_tm->tm_mday;
749 p_record_vbox_hour = now_tm->tm_hour;
750 p_record_vbox_min = now_tm->tm_min;
753 /* check, if file exists (especially when an extension calls the same extension) */
755 if ((p_record = fopen(filename, "r")))
758 SCAT(filename, "_2nd");
761 p_record = fopen(filename, "w");
764 PERROR("Port(%d) cannot record because file cannot be opened '%s'\n", p_serial, filename);
769 p_record_type = type;
770 p_record_vbox = vbox;
771 p_record_skip = skip;
773 switch(p_record_type)
778 fwrite(dummyheader, sizeof(dummyheader), 1, p_record);
784 UCPY(p_record_filename, filename);
786 PDEBUG(DEBUG_PORT, "Port(%d) recording started with file name '%s'\n", p_serial, filename);
792 * close the recoding file, put header in front and rename
794 void Port::close_record(int beep, int mute)
796 static signed short beep_mono[256];
797 unsigned long size, wsize;
799 char filename[512], indexname[512];
802 char number[256], callerid[256];
804 struct caller_info callerinfo;
805 char *valid_chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_.-!$%&/()=+*;~";
809 PDEBUG(DEBUG_PORT, "data still in record buffer: %d (dir %d)\n", (p_record_buffer_writep - p_record_buffer_readp) & RECORD_BUFFER_MASK, p_record_buffer_dir);
811 memcpy(&callerinfo, &p_callerinfo, sizeof(struct caller_info));
812 // apply_callerid_restriction(p_record_anon_ignore, callerinfo.id, &callerinfo.ntype, &callerinfo.present, &callerinfo.screen, callerinfo.extension, callerinfo.name);
814 SCPY(number, p_dialinginfo.id);
815 SCPY(callerid, numberrize_callerinfo(callerinfo.id, callerinfo.ntype, options.national, options.international));
816 if (callerid[0] == '\0')
818 if (callerinfo.present == INFO_PRESENT_RESTRICTED)
819 UCPY(callerid,"anonymous");
821 UCPY(callerid,"unknown");
824 /* change verboten digits */
826 while((p=strchr(p,'*')))
829 while((p=strchr(p,'/')))
832 while((p=strchr(p,'*')))
835 while((p=strchr(p,'/')))
838 ii = strlen(callerid);
841 if (!strchr(valid_chars, callerid[i]))
849 if (!strchr(valid_chars, number[i]))
855 if (mute && p_record_type==CODEC_MONO)
860 fseek(p_record, -(i<<1), SEEK_END);
861 p_record_length -= (i<<1);
863 /* add beep to the end of recording */
864 if (beep && p_record_type==CODEC_MONO)
869 beep_mono[i] = (signed short)(sin((double)i / 5.688888888889 * 2.0 * 3.1415927) * 2000.0);
875 fwrite(beep_mono, sizeof(beep_mono), 1, p_record);
876 i += sizeof(beep_mono);
877 p_record_length += sizeof(beep_mono);
881 /* complete header */
882 switch(p_record_type)
888 fprintf(p_record, "cue %c%c%c%c%c%c%c%c", 4, 0, 0, 0, 0,0,0,0);
891 fprintf(p_record, "LIST%c%c%c%cadtl", 4, 0, 0, 0);
894 fseek(p_record, 0, SEEK_SET);
896 /* WAVEfmt xxxx(fmt-size)dataxxxx[data]cue xxxx0000LISTxxxxadtl*/
897 size = p_record_length;
898 wsize = 4+8+sizeof(fmt)+8+size+8+4+8+4;
901 fprintf(p_record, "RIFF%c%c%c%c", (unsigned char)(wsize&0xff), (unsigned char)((wsize>>8)&0xff), (unsigned char)((wsize>>16)&0xff), (unsigned char)(wsize>>24));
904 fprintf(p_record, "WAVE");
907 fprintf(p_record, "fmt %c%c%c%c", sizeof(fmt), 0, 0, 0);
908 switch(p_record_type)
913 fmt.sample_rate = 8000; /* samples/sec */
914 fmt.data_rate = 16000; /* full data rate */
915 fmt.bytes_sample = 2; /* all channels */
916 fmt.bits_sample = 16; /* one channel */
922 fmt.sample_rate = 8000; /* samples/sec */
923 fmt.data_rate = 32000; /* full data rate */
924 fmt.bytes_sample = 4; /* all channels */
925 fmt.bits_sample = 16; /* one channel */
931 fmt.sample_rate = 8000; /* samples/sec */
932 fmt.data_rate = 8000; /* full data rate */
933 fmt.bytes_sample = 1; /* all channels */
934 fmt.bits_sample = 8; /* one channel */
937 fwrite(&fmt, sizeof(fmt), 1, p_record);
940 fprintf(p_record, "data%c%c%c%c", (unsigned char)(size&0xff), (unsigned char)((size>>8)&0xff), (unsigned char)((size>>16)&0xff), (unsigned char)(size>>24));
943 if (p_record_vbox == 1)
944 SPRINT(filename, "%s.wav", p_record_filename);
946 SPRINT(filename, "%s_%s-%s.wav", p_record_filename, callerid, number);
951 if (p_record_vbox == 1)
952 SPRINT(filename, "%s.isdn", p_record_filename);
954 SPRINT(filename, "%s_%s-%s.isdn", p_record_filename, callerid, number);
962 if (rename(p_record_filename, filename) < 0)
964 PERROR("Port(%d) cannot rename from '%s' to '%s'\n", p_serial, p_record_filename, filename);
968 PDEBUG(DEBUG_PORT, "Port(%d) recording is written and renamed to '%s' and must have the following size:%lu raw:%lu samples:%lu\n", p_serial, filename, wsize+8, size, size>>1);
970 if (p_record_vbox == 2)
972 SPRINT(indexname, "%s/%s/%s/vbox/index", INSTALL_DATA, options.extensions_dir, p_record_extension);
973 if ((fp = fopen(indexname,"a")))
977 /* remove path from file name */
979 while(strchr(p, '/'))
980 p = strchr(p, '/')+1;
981 fprintf(fp, "%s %d %d %d %d %d %s\n", p, p_record_vbox_year, p_record_vbox_mon, p_record_vbox_mday, p_record_vbox_hour, p_record_vbox_min, callerid);
987 PERROR("Port(%d) cannot open index file '%s' to append.\n", p_serial, indexname);
990 /* send email with sample*/
991 if (p_record_vbox_email[0])
993 send_mail(p_record_vbox_email_file?filename:(char *)"", callerid, callerinfo.extension, callerinfo.name, p_record_vbox_email, p_record_vbox_year, p_record_vbox_mon, p_record_vbox_mday, p_record_vbox_hour, p_record_vbox_min, p_record_extension);
1000 * recording function
1001 * Records all data from down and from up into one single stream.
1002 * Both streams may have gaps or jitter.
1003 * A Jitter buffer for both streams is used to compensate jitter.
1005 * If one stream (dir) received packets, they are stored to a
1006 * buffer to wait for the other stream (dir), so both streams can
1007 * be combined. If the buffer is full, it's content is written
1008 * without mixing stream. (assuming only one stram (dir) exists.)
1009 * A flag is used to indicate what stream is currently in buffer.
1011 * NOTE: First stereo sample (odd) is from down, second is from up.
1013 void Port::record(unsigned char *data, int length, int dir_fromup)
1015 unsigned char write_buffer[1024], *d;
1021 if (!p_record || !length)
1024 /* skip data from local caller (dtmf input) */
1025 if (p_record_skip && !dir_fromup)
1027 /* more to skip than we have */
1028 if (p_record_skip > length)
1030 p_record_skip -= length;
1034 data += p_record_skip;
1035 length -= p_record_skip;
1039 //printf("dir=%d len=%d\n", dir_fromup, length);
1041 free = ((p_record_buffer_readp - p_record_buffer_writep - 1) & RECORD_BUFFER_MASK);
1043 //PDEBUG(DEBUG_PORT, "record(data,%d,%d): free=%d, p_record_buffer_dir=%d, p_record_buffer_readp=%d, p_record_buffer_writep=%d.\n", length, dir_fromup, free, p_record_buffer_dir, p_record_buffer_readp, p_record_buffer_writep);
1045 /* the buffer stores the same data stream */
1046 if (dir_fromup == p_record_buffer_dir)
1050 //printf("same free=%d length=%d\n", free, length);
1051 /* first write what we can to the buffer */
1052 while(free && length)
1054 p_record_buffer[p_record_buffer_writep] = audio_law_to_s32[*data++];
1055 p_record_buffer_writep = (p_record_buffer_writep + 1) & RECORD_BUFFER_MASK;
1059 /* all written, so we return */
1062 /* still data left, buffer is full, so we need to write a chunk to file */
1063 switch(p_record_type)
1066 s = (signed short *)write_buffer;
1070 *s++ = p_record_buffer[p_record_buffer_readp];
1071 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1074 fwrite(write_buffer, 512, 1, p_record);
1075 p_record_length += 512;
1079 s = (signed short *)write_buffer;
1080 if (p_record_buffer_dir)
1085 *s++ = 0; /* nothing from down */
1086 *s++ = p_record_buffer[p_record_buffer_readp];
1087 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1095 *s++ = p_record_buffer[p_record_buffer_readp];
1096 *s++ = 0; /* nothing from up */
1097 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1101 fwrite(write_buffer, 1024, 1, p_record);
1102 p_record_length += 1024;
1110 *d++ = ((unsigned short)(p_record_buffer[p_record_buffer_readp]+0x8000)) >> 8;
1111 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1114 fwrite(write_buffer, 512, 1, p_record);
1115 p_record_length += 512;
1123 *d++ = audio_s16_to_law[p_record_buffer[p_record_buffer_readp] & 0xffff];
1124 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1127 fwrite(write_buffer, 256, 1, p_record);
1128 p_record_length += 256;
1131 /* because we still have data, we write again */
1135 /* the buffer stores the other stream */
1138 /* if buffer empty, change it */
1139 if (p_record_buffer_readp == p_record_buffer_writep)
1141 p_record_buffer_dir = dir_fromup;
1144 /* how much data can we mix ? */
1145 ii = (p_record_buffer_writep - p_record_buffer_readp) & RECORD_BUFFER_MASK;
1151 //printf("same ii=%d length=%d\n", ii, length);
1152 //PDEBUG(DEBUG_PORT, "record(data,%d,%d): free=%d, p_record_buffer_dir=%d, p_record_buffer_readp=%d, p_record_buffer_writep=%d: mixing %d bytes.\n", length, dir_fromup, free, p_record_buffer_dir, p_record_buffer_readp, p_record_buffer_writep, ii);
1154 /* write data mixed with the buffer */
1155 switch(p_record_type)
1158 s = (signed short *)write_buffer;
1162 sample = p_record_buffer[p_record_buffer_readp]
1163 + audio_law_to_s32[*data++];
1164 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1165 if (sample < SHORT_MIN) sample = SHORT_MIN;
1166 if (sample > SHORT_MAX) sample = SHORT_MAX;
1170 fwrite(write_buffer, ii<<1, 1, p_record);
1171 p_record_length += (ii<<1);
1175 s = (signed short *)write_buffer;
1176 if (p_record_buffer_dir)
1181 *s++ = audio_law_to_s32[*data++];
1182 *s++ = p_record_buffer[p_record_buffer_readp];
1183 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1191 *s++ = p_record_buffer[p_record_buffer_readp];
1192 *s++ = audio_law_to_s32[*data++];
1193 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1197 fwrite(write_buffer, ii<<2, 1, p_record);
1198 p_record_length += (ii<<2);
1206 sample = p_record_buffer[p_record_buffer_readp]
1207 + audio_law_to_s32[*data++];
1208 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1209 if (sample < SHORT_MIN) sample = SHORT_MIN;
1210 if (sample > SHORT_MAX) sample = SHORT_MAX;
1211 *d++ = (sample+0x8000) >> 8;
1214 fwrite(write_buffer, ii, 1, p_record);
1215 p_record_length += ii;
1223 sample = p_record_buffer[p_record_buffer_readp]
1224 + audio_law_to_s32[*data++];
1225 p_record_buffer_readp = (p_record_buffer_readp + 1) & RECORD_BUFFER_MASK;
1226 if (sample < SHORT_MIN) sample = SHORT_MIN;
1227 if (sample > SHORT_MAX) sample = SHORT_MAX;
1228 *d++ = audio_s16_to_law[sample & 0xffff];
1231 fwrite(write_buffer, ii, 1, p_record);
1232 p_record_length += ii;
1238 goto different_again;
1239 /* no data (maybe buffer) */