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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_compare (struct ast_dsp *dsp, int compare) |
Set if silence and noice lengths must be compared for busy. | |
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, int fuzzy) |
Set expected lengths of the busy tones. | |
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(), dahdi_hangup(), dahdi_new(), dahdi_setoption(), sip_new(), and ss_thread().
#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 dahdi_setoption().
#define DSP_DIGITMODE_MUTEMAX (1 << 10) |
Definition at line 36 of file dsp.h.
Referenced by ast_dsp_digitmode(), ast_dsp_process(), and dahdi_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(), dahdi_setoption(), process_dahdi(), and sip_new().
#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 dahdi_new().
#define DSP_FEATURE_DTMF_DETECT (1 << 3) |
Definition at line 28 of file dsp.h.
Referenced by __oh323_new(), ast_dsp_process(), dahdi_new(), disable_dtmf_detect(), enable_dtmf_detect(), mgcp_new(), misdn_set_opt_exec(), read_config(), sip_dtmfmode(), and sip_new().
#define DSP_FEATURE_FAX_DETECT (1 << 4) |
Definition at line 29 of file dsp.h.
Referenced by __ast_dsp_digitdetect(), dahdi_new(), misdn_set_opt_exec(), and read_config().
#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 1294 of file dsp.c.
References ast_log(), BUSY_MAX, BUSY_MIN, ast_dsp::busy_pattern_fuzzy, BUSY_PERCENT, ast_dsp::busy_quietlength, ast_dsp::busy_tonelength, ast_dsp::busycompare, ast_dsp::busycount, ast_dsp::busymaybe, ast_dsp::busytoneonly, DSP_HISTORY, ast_dsp::historicnoise, ast_dsp::historicsilence, LOG_DEBUG, LOG_ERROR, LOG_NOTICE, and option_debug.
Referenced by ast_dsp_process().
01295 { 01296 int res = 0, x; 01297 int avgsilence = 0, hitsilence = 0; 01298 int avgtone = 0, hittone = 0; 01299 #ifdef DEBUG_DSP_BUSYDETECT 01300 char buf[16]; 01301 char silence_list[64]="", tone_list[64]=""; 01302 #endif 01303 01304 if (!dsp->busymaybe) 01305 return res; 01306 dsp->busymaybe = 0; 01307 01308 for (x=DSP_HISTORY - dsp->busycount;x<DSP_HISTORY;x++) { 01309 avgsilence += dsp->historicsilence[x]; 01310 avgtone += dsp->historicnoise[x]; 01311 } 01312 avgsilence /= dsp->busycount; 01313 avgtone /= dsp->busycount; 01314 #ifdef DEBUG_DSP_BUSYDETECT 01315 sprintf(silence_list,"Silences: "); 01316 sprintf(tone_list,"Tones: "); 01317 #endif 01318 for (x=DSP_HISTORY - dsp->busycount; x<DSP_HISTORY; x++) { 01319 #ifdef DEBUG_DSP_BUSYDETECT 01320 snprintf(buf, sizeof(buf), "%5d ", dsp->historicsilence[x]); 01321 strcat(silence_list, buf); 01322 snprintf(buf, sizeof(buf), "%5d ", dsp->historicnoise[x]); 01323 strcat(tone_list, buf); 01324 #endif 01325 if (!dsp->busytoneonly) { 01326 if (avgsilence > dsp->historicsilence[x]) { 01327 if (avgsilence - (avgsilence*BUSY_PERCENT/100) <= dsp->historicsilence[x]) 01328 hitsilence++; 01329 } else { 01330 if (avgsilence + (avgsilence*BUSY_PERCENT/100) >= dsp->historicsilence[x]) 01331 hitsilence++; 01332 } 01333 } 01334 if (avgtone > dsp->historicnoise[x]) { 01335 if (avgtone - (avgtone*BUSY_PERCENT/100) <= dsp->historicnoise[x]) 01336 hittone++; 01337 } else { 01338 if (avgtone + (avgtone*BUSY_PERCENT/100) >= dsp->historicnoise[x]) 01339 hittone++; 01340 } 01341 } 01342 #ifdef DEBUG_DSP_BUSYDETECT 01343 fprintf(stderr, "BUSY DETECTOR\n"); 01344 fprintf(stderr, "%s\n", tone_list); 01345 fprintf(stderr, "%s\n", silence_list) 01346 #endif 01347 if ((dsp->busytoneonly || 01348 (hitsilence >= dsp->busycount - 1 && avgsilence >= BUSY_MIN && avgsilence <= BUSY_MAX)) && 01349 (hittone >= dsp->busycount - 1 && avgtone >= BUSY_MIN && avgtone <= BUSY_MAX)) { 01350 if (dsp->busycompare) { 01351 if (dsp->busytoneonly) { 01352 res = 1; 01353 ast_log(LOG_ERROR, "You can't use busytoneonly together with busycompare"); 01354 } else { 01355 if (avgtone > avgsilence) { 01356 if (avgtone - avgtone*BUSY_PERCENT/100 <= avgsilence) 01357 res = 1; 01358 } else { 01359 if (avgtone + avgtone*BUSY_PERCENT/100 >= avgsilence) 01360 res = 1; 01361 } 01362 } 01363 } else { 01364 res = 1; 01365 } 01366 } 01367 /* If we know the expected busy tone length, check we are in the range */ 01368 if (res && (dsp->busy_tonelength > 0)) { 01369 if (abs(avgtone - dsp->busy_tonelength) > (dsp->busy_tonelength*dsp->busy_pattern_fuzzy/100)) { 01370 if(option_debug) { 01371 ast_log(LOG_DEBUG, "busy detector: avgtone of %d not close enough to desired %d\n", avgtone, dsp->busy_tonelength); 01372 } 01373 res = 0; 01374 } 01375 } 01376 /* If we know the expected busy tone silent-period length, check we are in the range */ 01377 if (res && (!dsp->busytoneonly) && (dsp->busy_quietlength > 0)) { 01378 if (abs(avgsilence - dsp->busy_quietlength) > (dsp->busy_quietlength*dsp->busy_pattern_fuzzy/100)) { 01379 if(option_debug) { 01380 ast_log(LOG_DEBUG, "busy detector: avgsilence of %d not close enough to desired %d\n", avgsilence, dsp->busy_quietlength); 01381 } 01382 res = 0; 01383 } 01384 } 01385 if (res && option_debug) 01386 ast_log(LOG_NOTICE, "Detected busy sequence, avgtone: %d, avgsilence %d\n", avgtone, avgsilence); 01387 return res; 01388 }
Scans for progress indication in audio.
Definition at line 1223 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.
01224 { 01225 if (inf->frametype != AST_FRAME_VOICE) { 01226 ast_log(LOG_WARNING, "Can't check call progress of non-voice frames\n"); 01227 return 0; 01228 } 01229 if (inf->subclass != AST_FORMAT_SLINEAR) { 01230 ast_log(LOG_WARNING, "Can only check call progress in signed-linear frames\n"); 01231 return 0; 01232 } 01233 return __ast_dsp_call_progress(dsp, inf->data, inf->datalen / 2); 01234 }
Return non-zero if DTMF hit was found.
Definition at line 1011 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.
01012 { 01013 short *s; 01014 int len; 01015 int ign=0; 01016 01017 if (inf->frametype != AST_FRAME_VOICE) { 01018 ast_log(LOG_WARNING, "Can't check call progress of non-voice frames\n"); 01019 return 0; 01020 } 01021 if (inf->subclass != AST_FORMAT_SLINEAR) { 01022 ast_log(LOG_WARNING, "Can only check call progress in signed-linear frames\n"); 01023 return 0; 01024 } 01025 s = inf->data; 01026 len = inf->datalen / 2; 01027 return __ast_dsp_digitdetect(dsp, s, len, &ign); 01028 }
int ast_dsp_digitmode | ( | struct ast_dsp * | dsp, | |
int | digitmode | |||
) |
Set digit mode.
Definition at line 1805 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 dahdi_hangup(), dahdi_new(), dahdi_setoption(), mgcp_new(), sip_new(), and ss_thread().
01806 { 01807 int new; 01808 int old; 01809 01810 old = dsp->digitmode & (DSP_DIGITMODE_DTMF | DSP_DIGITMODE_MF | DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_MUTEMAX); 01811 new = digitmode & (DSP_DIGITMODE_DTMF | DSP_DIGITMODE_MF | DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_MUTEMAX); 01812 if (old != new) { 01813 /* Must initialize structures if switching from MF to DTMF or vice-versa */ 01814 if (new & DSP_DIGITMODE_MF) 01815 ast_mf_detect_init(&dsp->td.mf); 01816 else 01817 ast_dtmf_detect_init(&dsp->td.dtmf); 01818 } 01819 dsp->digitmode = digitmode; 01820 return 0; 01821 }
void ast_dsp_digitreset | ( | struct ast_dsp * | dsp | ) |
Reset DTMF detector.
Definition at line 1742 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().
01743 { 01744 int i; 01745 01746 dsp->thinkdigit = 0; 01747 if (dsp->digitmode & DSP_DIGITMODE_MF) { 01748 memset(dsp->td.mf.digits, 0, sizeof(dsp->td.mf.digits)); 01749 dsp->td.mf.current_digits = 0; 01750 /* Reinitialise the detector for the next block */ 01751 for (i = 0; i < 6; i++) { 01752 goertzel_reset(&dsp->td.mf.tone_out[i]); 01753 #ifdef OLD_DSP_ROUTINES 01754 goertzel_reset(&dsp->td.mf.tone_out2nd[i]); 01755 #endif 01756 } 01757 #ifdef OLD_DSP_ROUTINES 01758 dsp->td.mf.energy = 0.0; 01759 dsp->td.mf.hit1 = dsp->td.mf.hit2 = dsp->td.mf.hit3 = dsp->td.mf.hit4 = dsp->td.mf.mhit = 0; 01760 #else 01761 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; 01762 #endif 01763 dsp->td.mf.current_sample = 0; 01764 } else { 01765 memset(dsp->td.dtmf.digits, 0, sizeof(dsp->td.dtmf.digits)); 01766 dsp->td.dtmf.current_digits = 0; 01767 /* Reinitialise the detector for the next block */ 01768 for (i = 0; i < 4; i++) { 01769 goertzel_reset(&dsp->td.dtmf.row_out[i]); 01770 goertzel_reset(&dsp->td.dtmf.col_out[i]); 01771 #ifdef OLD_DSP_ROUTINES 01772 goertzel_reset(&dsp->td.dtmf.row_out2nd[i]); 01773 goertzel_reset(&dsp->td.dtmf.col_out2nd[i]); 01774 #endif 01775 } 01776 #ifdef FAX_DETECT 01777 goertzel_reset (&dsp->td.dtmf.fax_tone); 01778 #endif 01779 #ifdef OLD_DSP_ROUTINES 01780 #ifdef FAX_DETECT 01781 goertzel_reset (&dsp->td.dtmf.fax_tone2nd); 01782 #endif 01783 dsp->td.dtmf.hit1 = dsp->td.dtmf.hit2 = dsp->td.dtmf.hit3 = dsp->td.dtmf.hit4 = dsp->td.dtmf.mhit = 0; 01784 #else 01785 dsp->td.dtmf.lasthit = dsp->td.dtmf.mhit = 0; 01786 #endif 01787 dsp->td.dtmf.energy = 0.0; 01788 dsp->td.dtmf.current_sample = 0; 01789 } 01790 }
void ast_dsp_free | ( | struct ast_dsp * | dsp | ) |
Definition at line 1700 of file dsp.c.
References free.
Referenced by __ast_play_and_record(), __oh323_destroy(), background_detect_exec(), cl_dequeue_chan(), cleanup_connection(), conf_run(), dahdi_hangup(), do_waiting(), handle_recordfile(), isAnsweringMachine(), mgcp_hangup(), sip_dtmfmode(), sip_hangup(), and ss_thread().
01701 { 01702 free(dsp); 01703 }
int ast_dsp_get_tcount | ( | struct ast_dsp * | dsp | ) |
Get tcount (Threshold counter).
Definition at line 1842 of file dsp.c.
References ast_dsp::tcount.
01843 { 01844 return dsp->tcount; 01845 }
int ast_dsp_get_tstate | ( | struct ast_dsp * | dsp | ) |
Get tstate (Tone State).
Definition at line 1837 of file dsp.c.
References ast_dsp::tstate.
01838 { 01839 return dsp->tstate; 01840 }
int ast_dsp_getdigits | ( | struct ast_dsp * | dsp, | |
char * | buf, | |||
int | max | |||
) |
Get pending DTMF/MF digits.
Definition at line 1050 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.
01051 { 01052 if (dsp->digitmode & DSP_DIGITMODE_MF) { 01053 if (max > dsp->td.mf.current_digits) 01054 max = dsp->td.mf.current_digits; 01055 if (max > 0) { 01056 memcpy(buf, dsp->td.mf.digits, max); 01057 memmove(dsp->td.mf.digits, dsp->td.mf.digits + max, dsp->td.mf.current_digits - max); 01058 dsp->td.mf.current_digits -= max; 01059 } 01060 buf[max] = '\0'; 01061 return max; 01062 } else { 01063 if (max > dsp->td.dtmf.current_digits) 01064 max = dsp->td.dtmf.current_digits; 01065 if (max > 0) { 01066 memcpy (buf, dsp->td.dtmf.digits, max); 01067 memmove (dsp->td.dtmf.digits, dsp->td.dtmf.digits + max, dsp->td.dtmf.current_digits - max); 01068 dsp->td.dtmf.current_digits -= max; 01069 } 01070 buf[max] = '\0'; 01071 return max; 01072 } 01073 }
struct ast_dsp* ast_dsp_new | ( | void | ) |
Definition at line 1664 of file dsp.c.
References ast_calloc, ast_dsp_prog_reset(), ast_dtmf_detect_init(), BUSY_PAT_PERCENT, 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(), dahdi_new(), do_waiting(), handle_recordfile(), isAnsweringMachine(), mgcp_new(), misdn_set_opt_exec(), read_config(), sip_dtmfmode(), and sip_new().
01665 { 01666 struct ast_dsp *dsp; 01667 01668 if ((dsp = ast_calloc(1, sizeof(*dsp)))) { 01669 dsp->threshold = DEFAULT_THRESHOLD; 01670 dsp->features = DSP_FEATURE_SILENCE_SUPPRESS; 01671 dsp->busycount = DSP_HISTORY; 01672 dsp->busy_pattern_fuzzy = BUSY_PAT_PERCENT; 01673 #ifdef BUSYDETECT_TONEONLY 01674 dsp->busytoneonly = 1; 01675 #ifdef BUSYDETECT_COMPARE_TONE_AND_SILENCE 01676 #error "You can't use BUSYDETECT_TONEONLY together with BUSYDETECT_COMPARE_TONE_AND_SILENCE"); 01677 #endif 01678 #else 01679 dsp->busytoneonly = 0; 01680 #ifdef BUSYDETECT_COMPARE_TONE_AND_SILENCE 01681 dsp->busycompare = 1; 01682 #else 01683 dsp->busycompare = 0; 01684 #endif 01685 #endif 01686 dsp->display_inband_dtmf_warning = 1; 01687 /* Initialize DTMF detector */ 01688 ast_dtmf_detect_init(&dsp->td.dtmf); 01689 /* Initialize initial DSP progress detect parameters */ 01690 ast_dsp_prog_reset(dsp); 01691 } 01692 return dsp; 01693 }
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 1454 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_frisolate(), 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, ast_dsp::display_inband_dtmf_warning, 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_WARNING, ast_dsp::mf, silence, ast_frame::src, ast_frame::subclass, ast_dsp::td, and ast_dsp::thinkdigit.
Referenced by mgcp_rtp_read(), oh323_rtp_read(), process_ast_dsp(), and sip_rtp_read().
01455 { 01456 int silence; 01457 int res; 01458 int digit; 01459 int x; 01460 short *shortdata; 01461 unsigned char *odata; 01462 int len; 01463 int writeback = 0; 01464 01465 #define FIX_INF(inf) do { \ 01466 if (writeback) { \ 01467 switch(inf->subclass) { \ 01468 case AST_FORMAT_SLINEAR: \ 01469 break; \ 01470 case AST_FORMAT_ULAW: \ 01471 for (x=0;x<len;x++) \ 01472 odata[x] = AST_LIN2MU((unsigned short)shortdata[x]); \ 01473 break; \ 01474 case AST_FORMAT_ALAW: \ 01475 for (x=0;x<len;x++) \ 01476 odata[x] = AST_LIN2A((unsigned short)shortdata[x]); \ 01477 break; \ 01478 } \ 01479 } \ 01480 } while(0) 01481 01482 if (!af) 01483 return NULL; 01484 if (af->frametype != AST_FRAME_VOICE) 01485 return af; 01486 odata = af->data; 01487 len = af->datalen; 01488 /* Make sure we have short data */ 01489 switch(af->subclass) { 01490 case AST_FORMAT_SLINEAR: 01491 shortdata = af->data; 01492 len = af->datalen / 2; 01493 break; 01494 case AST_FORMAT_ULAW: 01495 shortdata = alloca(af->datalen * 2); 01496 for (x = 0;x < len; x++) 01497 shortdata[x] = AST_MULAW(odata[x]); 01498 break; 01499 case AST_FORMAT_ALAW: 01500 shortdata = alloca(af->datalen * 2); 01501 for (x = 0; x < len; x++) 01502 shortdata[x] = AST_ALAW(odata[x]); 01503 break; 01504 default: 01505 /*Display warning only once. Otherwise you would get hundreds of warnings every second */ 01506 if (dsp->display_inband_dtmf_warning) 01507 ast_log(LOG_WARNING, "Inband DTMF is not supported on codec %s. Use RFC2833\n", ast_getformatname(af->subclass)); 01508 dsp->display_inband_dtmf_warning = 0; 01509 return af; 01510 } 01511 silence = __ast_dsp_silence(dsp, shortdata, len, NULL); 01512 if ((dsp->features & DSP_FEATURE_SILENCE_SUPPRESS) && silence) { 01513 memset(&dsp->f, 0, sizeof(dsp->f)); 01514 dsp->f.frametype = AST_FRAME_NULL; 01515 ast_frfree(af); 01516 return ast_frisolate(&dsp->f); 01517 } 01518 if ((dsp->features & DSP_FEATURE_BUSY_DETECT) && ast_dsp_busydetect(dsp)) { 01519 chan->_softhangup |= AST_SOFTHANGUP_DEV; 01520 memset(&dsp->f, 0, sizeof(dsp->f)); 01521 dsp->f.frametype = AST_FRAME_CONTROL; 01522 dsp->f.subclass = AST_CONTROL_BUSY; 01523 ast_frfree(af); 01524 return ast_frisolate(&dsp->f); 01525 } 01526 if ((dsp->features & DSP_FEATURE_DTMF_DETECT)) { 01527 digit = __ast_dsp_digitdetect(dsp, shortdata, len, &writeback); 01528 #if 0 01529 if (digit) 01530 printf("Performing digit detection returned %d, digitmode is %d\n", digit, dsp->digitmode); 01531 #endif 01532 if (dsp->digitmode & (DSP_DIGITMODE_MUTECONF | DSP_DIGITMODE_MUTEMAX)) { 01533 if (!dsp->thinkdigit) { 01534 if (digit) { 01535 /* Looks like we might have something. 01536 * Request a conference mute for the moment */ 01537 memset(&dsp->f, 0, sizeof(dsp->f)); 01538 dsp->f.frametype = AST_FRAME_DTMF; 01539 dsp->f.subclass = 'm'; 01540 dsp->thinkdigit = 'x'; 01541 FIX_INF(af); 01542 if (chan) 01543 ast_queue_frame(chan, af); 01544 ast_frfree(af); 01545 return ast_frisolate(&dsp->f); 01546 } 01547 } else { 01548 if (digit) { 01549 /* Thought we saw one last time. Pretty sure we really have now */ 01550 if ((dsp->thinkdigit != 'x') && (dsp->thinkdigit != digit)) { 01551 /* If we found a digit, and we're changing digits, go 01552 ahead and send this one, but DON'T stop confmute because 01553 we're detecting something else, too... */ 01554 memset(&dsp->f, 0, sizeof(dsp->f)); 01555 dsp->f.frametype = AST_FRAME_DTMF_END; 01556 dsp->f.subclass = dsp->thinkdigit; 01557 FIX_INF(af); 01558 if (chan) 01559 ast_queue_frame(chan, af); 01560 ast_frfree(af); 01561 } else { 01562 dsp->thinkdigit = digit; 01563 memset(&dsp->f, 0, sizeof(dsp->f)); 01564 dsp->f.frametype = AST_FRAME_DTMF_BEGIN; 01565 dsp->f.subclass = dsp->thinkdigit; 01566 FIX_INF(af); 01567 if (chan) 01568 ast_queue_frame(chan, af); 01569 ast_frfree(af); 01570 } 01571 return ast_frisolate(&dsp->f); 01572 } else { 01573 memset(&dsp->f, 0, sizeof(dsp->f)); 01574 if (dsp->thinkdigit != 'x') { 01575 /* If we found a digit, send it now */ 01576 dsp->f.frametype = AST_FRAME_DTMF_END; 01577 dsp->f.subclass = dsp->thinkdigit; 01578 dsp->thinkdigit = 0; 01579 } else { 01580 dsp->f.frametype = AST_FRAME_DTMF; 01581 dsp->f.subclass = 'u'; 01582 dsp->thinkdigit = 0; 01583 } 01584 FIX_INF(af); 01585 if (chan) 01586 ast_queue_frame(chan, af); 01587 ast_frfree(af); 01588 return ast_frisolate(&dsp->f); 01589 } 01590 } 01591 } else if (!digit) { 01592 /* Only check when there is *not* a hit... */ 01593 if (dsp->digitmode & DSP_DIGITMODE_MF) { 01594 if (dsp->td.mf.current_digits) { 01595 memset(&dsp->f, 0, sizeof(dsp->f)); 01596 dsp->f.frametype = AST_FRAME_DTMF; 01597 dsp->f.subclass = dsp->td.mf.digits[0]; 01598 memmove(dsp->td.mf.digits, dsp->td.mf.digits + 1, dsp->td.mf.current_digits); 01599 dsp->td.mf.current_digits--; 01600 FIX_INF(af); 01601 if (chan) 01602 ast_queue_frame(chan, af); 01603 ast_frfree(af); 01604 return ast_frisolate(&dsp->f); 01605 } 01606 } else { 01607 if (dsp->td.dtmf.current_digits) { 01608 memset(&dsp->f, 0, sizeof(dsp->f)); 01609 dsp->f.frametype = AST_FRAME_DTMF_END; 01610 dsp->f.subclass = dsp->td.dtmf.digits[0]; 01611 memmove(dsp->td.dtmf.digits, dsp->td.dtmf.digits + 1, dsp->td.dtmf.current_digits); 01612 dsp->td.dtmf.current_digits--; 01613 FIX_INF(af); 01614 if (chan) 01615 ast_queue_frame(chan, af); 01616 ast_frfree(af); 01617 return ast_frisolate(&dsp->f); 01618 } 01619 } 01620 } 01621 } 01622 if ((dsp->features & DSP_FEATURE_CALL_PROGRESS)) { 01623 res = __ast_dsp_call_progress(dsp, shortdata, len); 01624 if (res) { 01625 switch(res) { 01626 case AST_CONTROL_ANSWER: 01627 case AST_CONTROL_BUSY: 01628 case AST_CONTROL_RINGING: 01629 case AST_CONTROL_CONGESTION: 01630 case AST_CONTROL_HANGUP: 01631 memset(&dsp->f, 0, sizeof(dsp->f)); 01632 dsp->f.frametype = AST_FRAME_CONTROL; 01633 dsp->f.subclass = res; 01634 dsp->f.src = "dsp_progress"; 01635 if (chan) 01636 ast_queue_frame(chan, &dsp->f); 01637 break; 01638 default: 01639 ast_log(LOG_WARNING, "Don't know how to represent call progress message %d\n", res); 01640 } 01641 } 01642 } 01643 FIX_INF(af); 01644 return af; 01645 }
void ast_dsp_reset | ( | struct ast_dsp * | dsp | ) |
Reset total silence count.
Definition at line 1792 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.
01793 { 01794 int x; 01795 01796 dsp->totalsilence = 0; 01797 dsp->gsamps = 0; 01798 for (x=0;x<4;x++) 01799 dsp->freqs[x].v2 = dsp->freqs[x].v3 = 0.0; 01800 memset(dsp->historicsilence, 0, sizeof(dsp->historicsilence)); 01801 memset(dsp->historicnoise, 0, sizeof(dsp->historicnoise)); 01802 dsp->ringtimeout= 0; 01803 }
void ast_dsp_set_busy_compare | ( | struct ast_dsp * | dsp, | |
int | compare | |||
) |
Set if silence and noice lengths must be compared for busy.
Definition at line 1722 of file dsp.c.
References ast_dsp::busycompare.
Referenced by dahdi_new().
01723 { 01724 if (compare > 0) 01725 dsp->busycompare = 1; 01726 else 01727 dsp->busycompare = 0; 01728 }
void ast_dsp_set_busy_count | ( | struct ast_dsp * | dsp, | |
int | cadences | |||
) |
Set number of required cadences for busy.
Definition at line 1713 of file dsp.c.
References ast_dsp::busycount, and DSP_HISTORY.
Referenced by dahdi_new().
01714 { 01715 if (cadences < 4) 01716 cadences = 4; 01717 if (cadences > DSP_HISTORY) 01718 cadences = DSP_HISTORY; 01719 dsp->busycount = cadences; 01720 }
void ast_dsp_set_busy_pattern | ( | struct ast_dsp * | dsp, | |
int | tonelength, | |||
int | quietlength, | |||
int | fuzzy | |||
) |
Set expected lengths of the busy tones.
Definition at line 1730 of file dsp.c.
References ast_log(), ast_dsp::busy_pattern_fuzzy, ast_dsp::busy_quietlength, ast_dsp::busy_tonelength, ast_dsp::busytoneonly, and LOG_DEBUG.
Referenced by dahdi_new().
01731 { 01732 dsp->busy_tonelength = tonelength; 01733 if (quietlength > 0) 01734 dsp->busy_quietlength = quietlength; 01735 else 01736 dsp->busytoneonly = 1; 01737 ast_log(LOG_DEBUG, "dsp busy pattern set to %d,%d\n", tonelength, quietlength); 01738 if( fuzzy > 0 && fuzzy < 50 ) 01739 dsp->busy_pattern_fuzzy = fuzzy; 01740 }
int ast_dsp_set_call_progress_zone | ( | struct ast_dsp * | dsp, | |
char * | zone | |||
) |
Set zone for doing progress detection.
Definition at line 1823 of file dsp.c.
References aliases, ast_dsp_prog_reset(), name, and ast_dsp::progmode.
Referenced by dahdi_new().
01824 { 01825 int x; 01826 01827 for (x=0;x<sizeof(aliases) / sizeof(aliases[0]);x++) { 01828 if (!strcasecmp(aliases[x].name, zone)) { 01829 dsp->progmode = aliases[x].mode; 01830 ast_dsp_prog_reset(dsp); 01831 return 0; 01832 } 01833 } 01834 return -1; 01835 }
void ast_dsp_set_features | ( | struct ast_dsp * | dsp, | |
int | features | |||
) |
Select feature set.
Definition at line 1695 of file dsp.c.
References ast_dsp::features.
Referenced by __oh323_new(), dahdi_new(), disable_dtmf_detect(), enable_dtmf_detect(), mgcp_new(), misdn_set_opt_exec(), read_config(), sip_dtmfmode(), and sip_new().
void ast_dsp_set_threshold | ( | struct ast_dsp * | dsp, | |
int | threshold | |||
) |
Set threshold value for silence.
Definition at line 1705 of file dsp.c.
References ast_dsp::threshold.
Referenced by __ast_play_and_record(), dahdi_new(), do_waiting(), handle_recordfile(), and isAnsweringMachine().
01706 { 01707 if (threshold < 256) 01708 dsp->threshold = 256; 01709 else 01710 dsp->threshold = threshold; 01711 }
Return non-zero if this is silence. Updates "totalsilence" with the total number of seconds of silence.
Definition at line 1436 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(), and isAnsweringMachine().
01437 { 01438 short *s; 01439 int len; 01440 01441 if (f->frametype != AST_FRAME_VOICE) { 01442 ast_log(LOG_WARNING, "Can't calculate silence on a non-voice frame\n"); 01443 return 0; 01444 } 01445 if (f->subclass != AST_FORMAT_SLINEAR) { 01446 ast_log(LOG_WARNING, "Can only calculate silence on signed-linear frames :(\n"); 01447 return 0; 01448 } 01449 s = f->data; 01450 len = f->datalen/2; 01451 return __ast_dsp_silence(dsp, s, len, totalsilence); 01452 }