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Defines | |
#define | DSP_DIGITMODE_DTMF 0 |
#define | DSP_DIGITMODE_MF 1 |
#define | DSP_DIGITMODE_MUTECONF (1 << 9) |
#define | DSP_DIGITMODE_MUTEMAX (1 << 10) |
#define | DSP_DIGITMODE_NOQUELCH (1 << 8) |
#define | DSP_DIGITMODE_RELAXDTMF (1 << 11) |
#define | DSP_FEATURE_BUSY_DETECT (1 << 1) |
#define | DSP_FEATURE_CALL_PROGRESS (DSP_PROGRESS_TALK | DSP_PROGRESS_RINGING | DSP_PROGRESS_BUSY | DSP_PROGRESS_CONGESTION) |
#define | DSP_FEATURE_DTMF_DETECT (1 << 3) |
#define | DSP_FEATURE_FAX_DETECT (1 << 4) |
#define | DSP_FEATURE_SILENCE_SUPPRESS (1 << 0) |
#define | DSP_PROGRESS_BUSY (1 << 18) |
#define | DSP_PROGRESS_CONGESTION (1 << 19) |
#define | DSP_PROGRESS_RINGING (1 << 17) |
#define | DSP_PROGRESS_TALK (1 << 16) |
#define | DSP_TONE_STATE_BUSY 4 |
#define | DSP_TONE_STATE_DIALTONE 2 |
#define | DSP_TONE_STATE_HUNGUP 8 |
#define | DSP_TONE_STATE_RINGING 1 |
#define | DSP_TONE_STATE_SILENCE 0 |
#define | DSP_TONE_STATE_SPECIAL1 5 |
#define | DSP_TONE_STATE_SPECIAL2 6 |
#define | DSP_TONE_STATE_SPECIAL3 7 |
#define | DSP_TONE_STATE_TALKING 3 |
Functions | |
int | ast_dsp_busydetect (struct ast_dsp *dsp) |
Return non-zero if historically this should be a busy, request that ast_dsp_silence has already been called. | |
int | ast_dsp_call_progress (struct ast_dsp *dsp, struct ast_frame *inf) |
Scans for progress indication in audio. | |
int | ast_dsp_digitdetect (struct ast_dsp *dsp, struct ast_frame *f) |
Return non-zero if DTMF hit was found. | |
int | ast_dsp_digitmode (struct ast_dsp *dsp, int digitmode) |
Set digit mode. | |
void | ast_dsp_digitreset (struct ast_dsp *dsp) |
Reset DTMF detector. | |
void | ast_dsp_free (struct ast_dsp *dsp) |
int | ast_dsp_get_tcount (struct ast_dsp *dsp) |
Get tcount (Threshold counter). | |
int | ast_dsp_get_tstate (struct ast_dsp *dsp) |
Get tstate (Tone State). | |
int | ast_dsp_getdigits (struct ast_dsp *dsp, char *buf, int max) |
Get pending DTMF/MF digits. | |
ast_dsp * | ast_dsp_new (void) |
ast_frame * | ast_dsp_process (struct ast_channel *chan, struct ast_dsp *dsp, struct ast_frame *inf) |
Return AST_FRAME_NULL frames when there is silence, AST_FRAME_BUSY on busies, and call progress, all dependent upon which features are enabled. | |
void | ast_dsp_reset (struct ast_dsp *dsp) |
Reset total silence count. | |
void | ast_dsp_set_busy_count (struct ast_dsp *dsp, int cadences) |
Set number of required cadences for busy. | |
void | ast_dsp_set_busy_pattern (struct ast_dsp *dsp, int tonelength, int quietlength) |
Set expected lengths of the busy tone. | |
int | ast_dsp_set_call_progress_zone (struct ast_dsp *dsp, char *zone) |
Set zone for doing progress detection. | |
void | ast_dsp_set_features (struct ast_dsp *dsp, int features) |
Select feature set. | |
void | ast_dsp_set_threshold (struct ast_dsp *dsp, int threshold) |
Set threshold value for silence. | |
int | ast_dsp_silence (struct ast_dsp *dsp, struct ast_frame *f, int *totalsilence) |
Return non-zero if this is silence. Updates "totalsilence" with the total number of seconds of silence. |
Definition in file dsp.h.
#define DSP_DIGITMODE_DTMF 0 |
Definition at line 31 of file dsp.h.
Referenced by ast_dsp_digitmode(), nv_background_detect_exec(), nv_detectfax_exec(), sip_new(), ss_thread(), zt_hangup(), zt_new(), and zt_setoption().
#define DSP_DIGITMODE_MF 1 |
Definition at line 32 of file dsp.h.
Referenced by __ast_dsp_digitdetect(), ast_dsp_digitmode(), ast_dsp_digitreset(), ast_dsp_getdigits(), ast_dsp_process(), and ss_thread().
#define DSP_DIGITMODE_MUTECONF (1 << 9) |
Definition at line 35 of file dsp.h.
Referenced by ast_dsp_digitmode(), ast_dsp_process(), and zt_setoption().
#define DSP_DIGITMODE_MUTEMAX (1 << 10) |
Definition at line 36 of file dsp.h.
Referenced by ast_dsp_digitmode(), ast_dsp_process(), and zt_setoption().
#define DSP_DIGITMODE_NOQUELCH (1 << 8) |
#define DSP_DIGITMODE_RELAXDTMF (1 << 11) |
Definition at line 37 of file dsp.h.
Referenced by __ast_dsp_digitdetect(), nv_background_detect_exec(), nv_detectfax_exec(), process_zap(), sip_new(), and zt_setoption().
#define DSP_FEATURE_BUSY_DETECT (1 << 1) |
#define DSP_FEATURE_CALL_PROGRESS (DSP_PROGRESS_TALK | DSP_PROGRESS_RINGING | DSP_PROGRESS_BUSY | DSP_PROGRESS_CONGESTION) |
Definition at line 43 of file dsp.h.
Referenced by __ast_dsp_call_progress(), ast_dsp_process(), and zt_new().
#define DSP_FEATURE_DTMF_DETECT (1 << 3) |
Definition at line 28 of file dsp.h.
Referenced by __oh323_new(), ast_dsp_process(), disable_dtmf_detect(), enable_dtmf_detect(), mgcp_new(), misdn_set_opt_exec(), nv_background_detect_exec(), nv_detectfax_exec(), read_config(), sip_dtmfmode(), sip_new(), and zt_new().
#define DSP_FEATURE_FAX_DETECT (1 << 4) |
Definition at line 29 of file dsp.h.
Referenced by __ast_dsp_digitdetect(), misdn_set_opt_exec(), nv_background_detect_exec(), nv_detectfax_exec(), read_config(), and zt_new().
#define DSP_FEATURE_SILENCE_SUPPRESS (1 << 0) |
#define DSP_PROGRESS_BUSY (1 << 18) |
#define DSP_PROGRESS_CONGESTION (1 << 19) |
#define DSP_PROGRESS_RINGING (1 << 17) |
#define DSP_PROGRESS_TALK (1 << 16) |
#define DSP_TONE_STATE_BUSY 4 |
#define DSP_TONE_STATE_DIALTONE 2 |
#define DSP_TONE_STATE_HUNGUP 8 |
#define DSP_TONE_STATE_RINGING 1 |
#define DSP_TONE_STATE_SILENCE 0 |
#define DSP_TONE_STATE_SPECIAL1 5 |
#define DSP_TONE_STATE_SPECIAL2 6 |
#define DSP_TONE_STATE_SPECIAL3 7 |
#define DSP_TONE_STATE_TALKING 3 |
int ast_dsp_busydetect | ( | struct ast_dsp * | dsp | ) |
Return non-zero if historically this should be a busy, request that ast_dsp_silence has already been called.
Definition at line 1276 of file dsp.c.
References ast_dsp_busydetect(), ast_log(), BUSY_MAX, BUSY_MIN, BUSY_PAT_PERCENT, BUSY_PERCENT, ast_dsp::busy_quietlength, BUSY_THRESHOLD, ast_dsp::busy_tonelength, ast_dsp::busycount, ast_dsp::busymaybe, DSP_HISTORY, ast_dsp::historicnoise, ast_dsp::historicsilence, LOG_DEBUG, and LOG_NOTICE.
Referenced by ast_dsp_busydetect(), and ast_dsp_process().
01277 { 01278 int res = 0, x; 01279 #ifndef BUSYDETECT_TONEONLY 01280 int avgsilence = 0, hitsilence = 0; 01281 #endif 01282 int avgtone = 0, hittone = 0; 01283 if (!dsp->busymaybe) 01284 return res; 01285 for (x=DSP_HISTORY - dsp->busycount;x<DSP_HISTORY;x++) { 01286 #ifndef BUSYDETECT_TONEONLY 01287 avgsilence += dsp->historicsilence[x]; 01288 #endif 01289 avgtone += dsp->historicnoise[x]; 01290 } 01291 #ifndef BUSYDETECT_TONEONLY 01292 avgsilence /= dsp->busycount; 01293 #endif 01294 avgtone /= dsp->busycount; 01295 for (x=DSP_HISTORY - dsp->busycount;x<DSP_HISTORY;x++) { 01296 #ifndef BUSYDETECT_TONEONLY 01297 if (avgsilence > dsp->historicsilence[x]) { 01298 if (avgsilence - (avgsilence*BUSY_PERCENT/100) <= dsp->historicsilence[x]) 01299 hitsilence++; 01300 } else { 01301 if (avgsilence + (avgsilence*BUSY_PERCENT/100) >= dsp->historicsilence[x]) 01302 hitsilence++; 01303 } 01304 #endif 01305 if (avgtone > dsp->historicnoise[x]) { 01306 if (avgtone - (avgtone*BUSY_PERCENT/100) <= dsp->historicnoise[x]) 01307 hittone++; 01308 } else { 01309 if (avgtone + (avgtone*BUSY_PERCENT/100) >= dsp->historicnoise[x]) 01310 hittone++; 01311 } 01312 } 01313 #ifndef BUSYDETECT_TONEONLY 01314 if ((hittone >= dsp->busycount - 1) && (hitsilence >= dsp->busycount - 1) && 01315 (avgtone >= BUSY_MIN && avgtone <= BUSY_MAX) && 01316 (avgsilence >= BUSY_MIN && avgsilence <= BUSY_MAX)) { 01317 #else 01318 if ((hittone >= dsp->busycount - 1) && (avgtone >= BUSY_MIN && avgtone <= BUSY_MAX)) { 01319 #endif 01320 #ifdef BUSYDETECT_COMPARE_TONE_AND_SILENCE 01321 #ifdef BUSYDETECT_TONEONLY 01322 #error You cant use BUSYDETECT_TONEONLY together with BUSYDETECT_COMPARE_TONE_AND_SILENCE 01323 #endif 01324 if (avgtone > avgsilence) { 01325 if (avgtone - avgtone*BUSY_PERCENT/100 <= avgsilence) 01326 res = 1; 01327 } else { 01328 if (avgtone + avgtone*BUSY_PERCENT/100 >= avgsilence) 01329 res = 1; 01330 } 01331 #else 01332 res = 1; 01333 #endif 01334 } 01335 /* If we know the expected busy tone length, check we are in the range */ 01336 if (res && (dsp->busy_tonelength > 0)) { 01337 if (abs(avgtone - dsp->busy_tonelength) > (dsp->busy_tonelength*BUSY_PAT_PERCENT/100)) { 01338 #if 0 01339 ast_log(LOG_NOTICE, "busy detector: avgtone of %d not close enough to desired %d\n", 01340 avgtone, dsp->busy_tonelength); 01341 #endif 01342 res = 0; 01343 } 01344 } 01345 #ifndef BUSYDETECT_TONEONLY 01346 /* If we know the expected busy tone silent-period length, check we are in the range */ 01347 if (res && (dsp->busy_quietlength > 0)) { 01348 if (abs(avgsilence - dsp->busy_quietlength) > (dsp->busy_quietlength*BUSY_PAT_PERCENT/100)) { 01349 #if 0 01350 ast_log(LOG_NOTICE, "busy detector: avgsilence of %d not close enough to desired %d\n", 01351 avgsilence, dsp->busy_quietlength); 01352 #endif 01353 res = 0; 01354 } 01355 } 01356 #endif 01357 #ifndef BUSYDETECT_TONEONLY 01358 #if 1 01359 if (res) 01360 ast_log(LOG_DEBUG, "ast_dsp_busydetect detected busy, avgtone: %d, avgsilence %d\n", avgtone, avgsilence); 01361 #endif 01362 #endif 01363 return res; 01364 }
Scans for progress indication in audio.
Definition at line 1207 of file dsp.c.
References __ast_dsp_call_progress(), AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_log(), ast_frame::data, ast_frame::datalen, ast_frame::frametype, LOG_WARNING, and ast_frame::subclass.
01208 { 01209 if (inf->frametype != AST_FRAME_VOICE) { 01210 ast_log(LOG_WARNING, "Can't check call progress of non-voice frames\n"); 01211 return 0; 01212 } 01213 if (inf->subclass != AST_FORMAT_SLINEAR) { 01214 ast_log(LOG_WARNING, "Can only check call progress in signed-linear frames\n"); 01215 return 0; 01216 } 01217 return __ast_dsp_call_progress(dsp, inf->data, inf->datalen / 2); 01218 }
Return non-zero if DTMF hit was found.
Definition at line 1006 of file dsp.c.
References __ast_dsp_digitdetect(), AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_log(), ast_frame::data, ast_frame::datalen, ast_frame::frametype, len, LOG_WARNING, s, and ast_frame::subclass.
01007 { 01008 short *s; 01009 int len; 01010 int ign=0; 01011 01012 if (inf->frametype != AST_FRAME_VOICE) { 01013 ast_log(LOG_WARNING, "Can't check call progress of non-voice frames\n"); 01014 return 0; 01015 } 01016 if (inf->subclass != AST_FORMAT_SLINEAR) { 01017 ast_log(LOG_WARNING, "Can only check call progress in signed-linear frames\n"); 01018 return 0; 01019 } 01020 s = inf->data; 01021 len = inf->datalen / 2; 01022 return __ast_dsp_digitdetect(dsp, s, len, &ign); 01023 }
int ast_dsp_digitmode | ( | struct ast_dsp * | dsp, | |
int | digitmode | |||
) |
Set digit mode.
Definition at line 1748 of file dsp.c.
References ast_dtmf_detect_init(), ast_mf_detect_init(), ast_dsp::digitmode, DSP_DIGITMODE_DTMF, DSP_DIGITMODE_MF, DSP_DIGITMODE_MUTECONF, DSP_DIGITMODE_MUTEMAX, ast_dsp::dtmf, ast_dsp::mf, and ast_dsp::td.
Referenced by mgcp_new(), nv_background_detect_exec(), nv_detectfax_exec(), sip_new(), ss_thread(), zt_hangup(), zt_new(), and zt_setoption().
01749 { 01750 int new; 01751 int old; 01752 01753 old = dsp->digitmode & (DSP_DIGITMODE_DTMF | DSP_DIGITMODE_MF | DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_MUTEMAX); 01754 new = digitmode & (DSP_DIGITMODE_DTMF | DSP_DIGITMODE_MF | DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_MUTEMAX); 01755 if (old != new) { 01756 /* Must initialize structures if switching from MF to DTMF or vice-versa */ 01757 if (new & DSP_DIGITMODE_MF) 01758 ast_mf_detect_init(&dsp->td.mf); 01759 else 01760 ast_dtmf_detect_init(&dsp->td.dtmf); 01761 } 01762 dsp->digitmode = digitmode; 01763 return 0; 01764 }
void ast_dsp_digitreset | ( | struct ast_dsp * | dsp | ) |
Reset DTMF detector.
Definition at line 1685 of file dsp.c.
References dtmf_detect_state_t::col_out, dtmf_detect_state_t::current_digits, mf_detect_state_t::current_digits, dtmf_detect_state_t::current_sample, mf_detect_state_t::current_sample, ast_dsp::digitmode, dtmf_detect_state_t::digits, mf_detect_state_t::digits, DSP_DIGITMODE_MF, ast_dsp::dtmf, dtmf_detect_state_t::energy, dtmf_detect_state_t::fax_tone, goertzel_reset(), mf_detect_state_t::hits, dtmf_detect_state_t::lasthit, ast_dsp::mf, dtmf_detect_state_t::mhit, mf_detect_state_t::mhit, dtmf_detect_state_t::row_out, ast_dsp::td, ast_dsp::thinkdigit, and mf_detect_state_t::tone_out.
Referenced by ss_thread().
01686 { 01687 int i; 01688 01689 dsp->thinkdigit = 0; 01690 if (dsp->digitmode & DSP_DIGITMODE_MF) { 01691 memset(dsp->td.mf.digits, 0, sizeof(dsp->td.mf.digits)); 01692 dsp->td.mf.current_digits = 0; 01693 /* Reinitialise the detector for the next block */ 01694 for (i = 0; i < 6; i++) { 01695 goertzel_reset(&dsp->td.mf.tone_out[i]); 01696 #ifdef OLD_DSP_ROUTINES 01697 goertzel_reset(&dsp->td.mf.tone_out2nd[i]); 01698 #endif 01699 } 01700 #ifdef OLD_DSP_ROUTINES 01701 dsp->td.mf.energy = 0.0; 01702 dsp->td.mf.hit1 = dsp->td.mf.hit2 = dsp->td.mf.hit3 = dsp->td.mf.hit4 = dsp->td.mf.mhit = 0; 01703 #else 01704 dsp->td.mf.hits[4] = dsp->td.mf.hits[3] = dsp->td.mf.hits[2] = dsp->td.mf.hits[1] = dsp->td.mf.hits[0] = dsp->td.mf.mhit = 0; 01705 #endif 01706 dsp->td.mf.current_sample = 0; 01707 } else { 01708 memset(dsp->td.dtmf.digits, 0, sizeof(dsp->td.dtmf.digits)); 01709 dsp->td.dtmf.current_digits = 0; 01710 /* Reinitialise the detector for the next block */ 01711 for (i = 0; i < 4; i++) { 01712 goertzel_reset(&dsp->td.dtmf.row_out[i]); 01713 goertzel_reset(&dsp->td.dtmf.col_out[i]); 01714 #ifdef OLD_DSP_ROUTINES 01715 goertzel_reset(&dsp->td.dtmf.row_out2nd[i]); 01716 goertzel_reset(&dsp->td.dtmf.col_out2nd[i]); 01717 #endif 01718 } 01719 #ifdef FAX_DETECT 01720 goertzel_reset (&dsp->td.dtmf.fax_tone); 01721 #endif 01722 #ifdef OLD_DSP_ROUTINES 01723 #ifdef FAX_DETECT 01724 goertzel_reset (&dsp->td.dtmf.fax_tone2nd); 01725 #endif 01726 dsp->td.dtmf.hit1 = dsp->td.dtmf.hit2 = dsp->td.dtmf.hit3 = dsp->td.dtmf.hit4 = dsp->td.dtmf.mhit = 0; 01727 #else 01728 dsp->td.dtmf.lasthit = dsp->td.dtmf.mhit = 0; 01729 #endif 01730 dsp->td.dtmf.energy = 0.0; 01731 dsp->td.dtmf.current_sample = 0; 01732 } 01733 }
void ast_dsp_free | ( | struct ast_dsp * | dsp | ) |
Definition at line 1659 of file dsp.c.
References free.
Referenced by __ast_play_and_record(), __oh323_destroy(), background_detect_exec(), cl_dequeue_chan(), cleanup_connection(), do_waiting(), handle_recordfile(), isAnsweringMachine(), mgcp_hangup(), nv_background_detect_exec(), nv_detectfax_exec(), sip_dtmfmode(), sip_hangup(), ss_thread(), and zt_hangup().
01660 { 01661 free(dsp); 01662 }
int ast_dsp_get_tcount | ( | struct ast_dsp * | dsp | ) |
Get tcount (Threshold counter).
Definition at line 1785 of file dsp.c.
References ast_dsp::tcount.
01786 { 01787 return dsp->tcount; 01788 }
int ast_dsp_get_tstate | ( | struct ast_dsp * | dsp | ) |
Get tstate (Tone State).
Definition at line 1780 of file dsp.c.
References ast_dsp::tstate.
01781 { 01782 return dsp->tstate; 01783 }
int ast_dsp_getdigits | ( | struct ast_dsp * | dsp, | |
char * | buf, | |||
int | max | |||
) |
Get pending DTMF/MF digits.
Definition at line 1045 of file dsp.c.
References dtmf_detect_state_t::current_digits, mf_detect_state_t::current_digits, ast_dsp::digitmode, dtmf_detect_state_t::digits, mf_detect_state_t::digits, DSP_DIGITMODE_MF, ast_dsp::dtmf, ast_dsp::mf, and ast_dsp::td.
01046 { 01047 if (dsp->digitmode & DSP_DIGITMODE_MF) { 01048 if (max > dsp->td.mf.current_digits) 01049 max = dsp->td.mf.current_digits; 01050 if (max > 0) { 01051 memcpy(buf, dsp->td.mf.digits, max); 01052 memmove(dsp->td.mf.digits, dsp->td.mf.digits + max, dsp->td.mf.current_digits - max); 01053 dsp->td.mf.current_digits -= max; 01054 } 01055 buf[max] = '\0'; 01056 return max; 01057 } else { 01058 if (max > dsp->td.dtmf.current_digits) 01059 max = dsp->td.dtmf.current_digits; 01060 if (max > 0) { 01061 memcpy (buf, dsp->td.dtmf.digits, max); 01062 memmove (dsp->td.dtmf.digits, dsp->td.dtmf.digits + max, dsp->td.dtmf.current_digits - max); 01063 dsp->td.dtmf.current_digits -= max; 01064 } 01065 buf[max] = '\0'; 01066 return max; 01067 } 01068 }
struct ast_dsp* ast_dsp_new | ( | void | ) |
Definition at line 1638 of file dsp.c.
References ast_calloc, ast_dsp_prog_reset(), ast_dtmf_detect_init(), DEFAULT_THRESHOLD, DSP_FEATURE_SILENCE_SUPPRESS, DSP_HISTORY, and ast_dsp::threshold.
Referenced by __ast_play_and_record(), __oh323_new(), background_detect_exec(), conf_run(), do_waiting(), handle_recordfile(), isAnsweringMachine(), mgcp_new(), misdn_set_opt_exec(), nv_background_detect_exec(), nv_detectfax_exec(), read_config(), sip_dtmfmode(), sip_new(), and zt_new().
01639 { 01640 struct ast_dsp *dsp; 01641 01642 if ((dsp = ast_calloc(1, sizeof(*dsp)))) { 01643 dsp->threshold = DEFAULT_THRESHOLD; 01644 dsp->features = DSP_FEATURE_SILENCE_SUPPRESS; 01645 dsp->busycount = DSP_HISTORY; 01646 /* Initialize DTMF detector */ 01647 ast_dtmf_detect_init(&dsp->td.dtmf); 01648 /* Initialize initial DSP progress detect parameters */ 01649 ast_dsp_prog_reset(dsp); 01650 } 01651 return dsp; 01652 }
struct ast_frame* ast_dsp_process | ( | struct ast_channel * | chan, | |
struct ast_dsp * | dsp, | |||
struct ast_frame * | inf | |||
) |
Return AST_FRAME_NULL frames when there is silence, AST_FRAME_BUSY on busies, and call progress, all dependent upon which features are enabled.
Definition at line 1430 of file dsp.c.
References __ast_dsp_call_progress(), __ast_dsp_digitdetect(), __ast_dsp_silence(), ast_channel::_softhangup, AST_ALAW, AST_CONTROL_ANSWER, AST_CONTROL_BUSY, AST_CONTROL_CONGESTION, AST_CONTROL_HANGUP, AST_CONTROL_RINGING, ast_dsp_busydetect(), AST_FORMAT_ALAW, AST_FORMAT_SLINEAR, AST_FORMAT_ULAW, AST_FRAME_CONTROL, AST_FRAME_DTMF, AST_FRAME_DTMF_BEGIN, AST_FRAME_DTMF_END, AST_FRAME_NULL, AST_FRAME_VOICE, ast_frfree, ast_getformatname(), ast_log(), AST_MULAW, ast_queue_frame(), AST_SOFTHANGUP_DEV, dtmf_detect_state_t::current_digits, mf_detect_state_t::current_digits, ast_frame::data, ast_frame::datalen, ast_dsp::digitmode, dtmf_detect_state_t::digits, mf_detect_state_t::digits, DSP_DIGITMODE_MF, DSP_DIGITMODE_MUTECONF, DSP_DIGITMODE_MUTEMAX, DSP_FEATURE_BUSY_DETECT, DSP_FEATURE_CALL_PROGRESS, DSP_FEATURE_DTMF_DETECT, DSP_FEATURE_SILENCE_SUPPRESS, ast_dsp::dtmf, ast_dsp::f, ast_dsp::features, FIX_INF, ast_frame::frametype, len, LOG_DEBUG, LOG_WARNING, ast_dsp::mf, silence, ast_frame::src, ast_frame::subclass, ast_dsp::td, and ast_dsp::thinkdigit.
Referenced by mgcp_rtp_read(), nv_background_detect_exec(), nv_detectfax_exec(), oh323_rtp_read(), process_ast_dsp(), sip_rtp_read(), and zt_read().
01431 { 01432 int silence; 01433 int res; 01434 int digit; 01435 int x; 01436 short *shortdata; 01437 unsigned char *odata; 01438 int len; 01439 int writeback = 0; 01440 01441 #define FIX_INF(inf) do { \ 01442 if (writeback) { \ 01443 switch(inf->subclass) { \ 01444 case AST_FORMAT_SLINEAR: \ 01445 break; \ 01446 case AST_FORMAT_ULAW: \ 01447 for (x=0;x<len;x++) \ 01448 odata[x] = AST_LIN2MU((unsigned short)shortdata[x]); \ 01449 break; \ 01450 case AST_FORMAT_ALAW: \ 01451 for (x=0;x<len;x++) \ 01452 odata[x] = AST_LIN2A((unsigned short)shortdata[x]); \ 01453 break; \ 01454 } \ 01455 } \ 01456 } while(0) 01457 01458 if (!af) 01459 return NULL; 01460 if (af->frametype != AST_FRAME_VOICE) 01461 return af; 01462 odata = af->data; 01463 len = af->datalen; 01464 /* Make sure we have short data */ 01465 switch(af->subclass) { 01466 case AST_FORMAT_SLINEAR: 01467 shortdata = af->data; 01468 len = af->datalen / 2; 01469 break; 01470 case AST_FORMAT_ULAW: 01471 shortdata = alloca(af->datalen * 2); 01472 for (x = 0;x < len; x++) 01473 shortdata[x] = AST_MULAW(odata[x]); 01474 break; 01475 case AST_FORMAT_ALAW: 01476 shortdata = alloca(af->datalen * 2); 01477 for (x = 0; x < len; x++) 01478 shortdata[x] = AST_ALAW(odata[x]); 01479 break; 01480 default: 01481 ast_log(LOG_WARNING, "Inband DTMF is not supported on codec %s. Use RFC2833\n", ast_getformatname(af->subclass)); 01482 return af; 01483 } 01484 silence = __ast_dsp_silence(dsp, shortdata, len, NULL); 01485 if ((dsp->features & DSP_FEATURE_SILENCE_SUPPRESS) && silence) { 01486 memset(&dsp->f, 0, sizeof(dsp->f)); 01487 dsp->f.frametype = AST_FRAME_NULL; 01488 ast_frfree(af); 01489 return &dsp->f; 01490 } 01491 if ((dsp->features & DSP_FEATURE_BUSY_DETECT) && ast_dsp_busydetect(dsp)) { 01492 chan->_softhangup |= AST_SOFTHANGUP_DEV; 01493 memset(&dsp->f, 0, sizeof(dsp->f)); 01494 dsp->f.frametype = AST_FRAME_CONTROL; 01495 dsp->f.subclass = AST_CONTROL_BUSY; 01496 ast_frfree(af); 01497 ast_log(LOG_DEBUG, "Requesting Hangup because the busy tone was detected on channel %s\n", chan->name); 01498 return &dsp->f; 01499 } 01500 if ((dsp->features & DSP_FEATURE_DTMF_DETECT)) { 01501 digit = __ast_dsp_digitdetect(dsp, shortdata, len, &writeback); 01502 #if 0 01503 if (digit) 01504 printf("Performing digit detection returned %d, digitmode is %d\n", digit, dsp->digitmode); 01505 #endif 01506 if (dsp->digitmode & (DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_MUTEMAX)) { 01507 if (!dsp->thinkdigit) { 01508 if (digit) { 01509 /* Looks like we might have something. 01510 * Request a conference mute for the moment */ 01511 memset(&dsp->f, 0, sizeof(dsp->f)); 01512 dsp->f.frametype = AST_FRAME_DTMF; 01513 dsp->f.subclass = 'm'; 01514 dsp->thinkdigit = 'x'; 01515 FIX_INF(af); 01516 if (chan) 01517 ast_queue_frame(chan, af); 01518 ast_frfree(af); 01519 return &dsp->f; 01520 } 01521 } else { 01522 if (digit) { 01523 /* Thought we saw one last time. Pretty sure we really have now */ 01524 if ((dsp->thinkdigit != 'x') && (dsp->thinkdigit != digit)) { 01525 /* If we found a digit, and we're changing digits, go 01526 ahead and send this one, but DON'T stop confmute because 01527 we're detecting something else, too... */ 01528 memset(&dsp->f, 0, sizeof(dsp->f)); 01529 dsp->f.frametype = AST_FRAME_DTMF_END; 01530 dsp->f.subclass = dsp->thinkdigit; 01531 FIX_INF(af); 01532 if (chan) 01533 ast_queue_frame(chan, af); 01534 ast_frfree(af); 01535 } else { 01536 dsp->thinkdigit = digit; 01537 memset(&dsp->f, 0, sizeof(dsp->f)); 01538 dsp->f.frametype = AST_FRAME_DTMF_BEGIN; 01539 dsp->f.subclass = dsp->thinkdigit; 01540 FIX_INF(af); 01541 if (chan) 01542 ast_queue_frame(chan, af); 01543 ast_frfree(af); 01544 } 01545 return &dsp->f; 01546 } else { 01547 memset(&dsp->f, 0, sizeof(dsp->f)); 01548 if (dsp->thinkdigit != 'x') { 01549 /* If we found a digit, send it now */ 01550 dsp->f.frametype = AST_FRAME_DTMF_END; 01551 dsp->f.subclass = dsp->thinkdigit; 01552 dsp->thinkdigit = 0; 01553 } else { 01554 dsp->f.frametype = AST_FRAME_DTMF; 01555 dsp->f.subclass = 'u'; 01556 dsp->thinkdigit = 0; 01557 } 01558 FIX_INF(af); 01559 if (chan) 01560 ast_queue_frame(chan, af); 01561 ast_frfree(af); 01562 return &dsp->f; 01563 } 01564 } 01565 } else if (!digit) { 01566 /* Only check when there is *not* a hit... */ 01567 if (dsp->digitmode & DSP_DIGITMODE_MF) { 01568 if (dsp->td.mf.current_digits) { 01569 memset(&dsp->f, 0, sizeof(dsp->f)); 01570 dsp->f.frametype = AST_FRAME_DTMF; 01571 dsp->f.subclass = dsp->td.mf.digits[0]; 01572 memmove(dsp->td.mf.digits, dsp->td.mf.digits + 1, dsp->td.mf.current_digits); 01573 dsp->td.mf.current_digits--; 01574 FIX_INF(af); 01575 if (chan) 01576 ast_queue_frame(chan, af); 01577 ast_frfree(af); 01578 return &dsp->f; 01579 } 01580 } else { 01581 if (dsp->td.dtmf.current_digits) { 01582 memset(&dsp->f, 0, sizeof(dsp->f)); 01583 dsp->f.frametype = AST_FRAME_DTMF_END; 01584 dsp->f.subclass = dsp->td.dtmf.digits[0]; 01585 memmove(dsp->td.dtmf.digits, dsp->td.dtmf.digits + 1, dsp->td.dtmf.current_digits); 01586 dsp->td.dtmf.current_digits--; 01587 FIX_INF(af); 01588 if (chan) 01589 ast_queue_frame(chan, af); 01590 ast_frfree(af); 01591 return &dsp->f; 01592 } 01593 } 01594 } 01595 } 01596 if ((dsp->features & DSP_FEATURE_CALL_PROGRESS)) { 01597 res = __ast_dsp_call_progress(dsp, shortdata, len); 01598 if (res) { 01599 switch(res) { 01600 case AST_CONTROL_ANSWER: 01601 case AST_CONTROL_BUSY: 01602 case AST_CONTROL_RINGING: 01603 case AST_CONTROL_CONGESTION: 01604 case AST_CONTROL_HANGUP: 01605 memset(&dsp->f, 0, sizeof(dsp->f)); 01606 dsp->f.frametype = AST_FRAME_CONTROL; 01607 dsp->f.subclass = res; 01608 dsp->f.src = "dsp_progress"; 01609 if (chan) 01610 ast_queue_frame(chan, &dsp->f); 01611 break; 01612 default: 01613 ast_log(LOG_WARNING, "Don't know how to represent call progress message %d\n", res); 01614 } 01615 } 01616 } 01617 FIX_INF(af); 01618 return af; 01619 }
void ast_dsp_reset | ( | struct ast_dsp * | dsp | ) |
Reset total silence count.
Definition at line 1735 of file dsp.c.
References ast_dsp::freqs, ast_dsp::gsamps, ast_dsp::historicnoise, ast_dsp::historicsilence, ast_dsp::ringtimeout, ast_dsp::totalsilence, goertzel_state_t::v2, and goertzel_state_t::v3.
01736 { 01737 int x; 01738 01739 dsp->totalsilence = 0; 01740 dsp->gsamps = 0; 01741 for (x=0;x<4;x++) 01742 dsp->freqs[x].v2 = dsp->freqs[x].v3 = 0.0; 01743 memset(dsp->historicsilence, 0, sizeof(dsp->historicsilence)); 01744 memset(dsp->historicnoise, 0, sizeof(dsp->historicnoise)); 01745 dsp->ringtimeout= 0; 01746 }
void ast_dsp_set_busy_count | ( | struct ast_dsp * | dsp, | |
int | cadences | |||
) |
Set number of required cadences for busy.
Definition at line 1669 of file dsp.c.
References ast_dsp::busycount, and DSP_HISTORY.
Referenced by zt_new().
01670 { 01671 if (cadences < 4) 01672 cadences = 4; 01673 if (cadences > DSP_HISTORY) 01674 cadences = DSP_HISTORY; 01675 dsp->busycount = cadences; 01676 }
void ast_dsp_set_busy_pattern | ( | struct ast_dsp * | dsp, | |
int | tonelength, | |||
int | quietlength | |||
) |
Set expected lengths of the busy tone.
Definition at line 1678 of file dsp.c.
References ast_log(), ast_dsp::busy_quietlength, ast_dsp::busy_tonelength, and LOG_DEBUG.
Referenced by zt_new().
01679 { 01680 dsp->busy_tonelength = tonelength; 01681 dsp->busy_quietlength = quietlength; 01682 ast_log(LOG_DEBUG, "dsp busy pattern set to %d,%d\n", tonelength, quietlength); 01683 }
int ast_dsp_set_call_progress_zone | ( | struct ast_dsp * | dsp, | |
char * | zone | |||
) |
Set zone for doing progress detection.
Definition at line 1766 of file dsp.c.
References aliases, ast_dsp_prog_reset(), name, and ast_dsp::progmode.
Referenced by zt_new().
01767 { 01768 int x; 01769 01770 for (x=0;x<sizeof(aliases) / sizeof(aliases[0]);x++) { 01771 if (!strcasecmp(aliases[x].name, zone)) { 01772 dsp->progmode = aliases[x].mode; 01773 ast_dsp_prog_reset(dsp); 01774 return 0; 01775 } 01776 } 01777 return -1; 01778 }
void ast_dsp_set_features | ( | struct ast_dsp * | dsp, | |
int | features | |||
) |
Select feature set.
Definition at line 1654 of file dsp.c.
References ast_dsp::features.
Referenced by __oh323_new(), disable_dtmf_detect(), enable_dtmf_detect(), mgcp_new(), misdn_set_opt_exec(), nv_background_detect_exec(), nv_detectfax_exec(), read_config(), sip_dtmfmode(), sip_new(), and zt_new().
void ast_dsp_set_threshold | ( | struct ast_dsp * | dsp, | |
int | threshold | |||
) |
Set threshold value for silence.
Definition at line 1664 of file dsp.c.
References ast_dsp::threshold.
Referenced by __ast_play_and_record(), do_waiting(), handle_recordfile(), isAnsweringMachine(), nv_background_detect_exec(), and nv_detectfax_exec().
Return non-zero if this is silence. Updates "totalsilence" with the total number of seconds of silence.
Definition at line 1412 of file dsp.c.
References __ast_dsp_silence(), AST_FORMAT_SLINEAR, AST_FRAME_VOICE, ast_log(), f, len, LOG_WARNING, and s.
Referenced by __ast_play_and_record(), background_detect_exec(), conf_run(), do_waiting(), handle_recordfile(), isAnsweringMachine(), nv_background_detect_exec(), and nv_detectfax_exec().
01413 { 01414 short *s; 01415 int len; 01416 01417 if (f->frametype != AST_FRAME_VOICE) { 01418 ast_log(LOG_WARNING, "Can't calculate silence on a non-voice frame\n"); 01419 return 0; 01420 } 01421 if (f->subclass != AST_FORMAT_SLINEAR) { 01422 ast_log(LOG_WARNING, "Can only calculate silence on signed-linear frames :(\n"); 01423 return 0; 01424 } 01425 s = f->data; 01426 len = f->datalen/2; 01427 return __ast_dsp_silence(dsp, s, len, totalsilence); 01428 }