Sat Aug 6 00:39:57 2011

Asterisk developer's documentation


indications.h File Reference

BSD Telephony Of Mexico "Tormenta" Tone Zone Support 2/22/01. More...

#include "asterisk/lock.h"

Go to the source code of this file.

Data Structures

struct  tone_zone
struct  tone_zone_sound

Functions

tone_zone_soundast_get_indication_tone (const struct tone_zone *zone, const char *indication)
tone_zoneast_get_indication_zone (const char *country)
int ast_playtones_start (struct ast_channel *chan, int vol, const char *tonelist, int interruptible)
void ast_playtones_stop (struct ast_channel *chan)
int ast_register_indication (struct tone_zone *zone, const char *indication, const char *tonelist)
int ast_register_indication_country (struct tone_zone *country)
int ast_set_indication_country (const char *country)
int ast_unregister_indication (struct tone_zone *zone, const char *indication)
int ast_unregister_indication_country (const char *country)
tone_zoneast_walk_indications (const struct tone_zone *cur)


Detailed Description

BSD Telephony Of Mexico "Tormenta" Tone Zone Support 2/22/01.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

Primary Author: Pauline Middelink <middelink@polyware.nl>

Definition in file indications.h.


Function Documentation

struct tone_zone_sound* ast_get_indication_tone ( const struct tone_zone zone,
const char *  indication 
)

Definition at line 403 of file indications.c.

References ast_mutex_lock(), ast_mutex_unlock(), current_tonezone, tone_zone_sound::name, tone_zone_sound::next, tone_zones, tone_zone::tones, and tzlock.

Referenced by ast_app_dtget(), ast_indicate_data(), dialtone_indicate(), handle_playtones(), play_dialtone(), and read_exec().

00404 {
00405    struct tone_zone_sound *ts;
00406 
00407    /* we need some tonezone, pick the first */
00408    if (zone == NULL && current_tonezone)
00409       zone = current_tonezone;   /* default country? */
00410    if (zone == NULL && tone_zones)
00411       zone = tone_zones;      /* any country? */
00412    if (zone == NULL)
00413       return 0;   /* not a single country insight */
00414 
00415    ast_mutex_lock(&tzlock);
00416    for (ts=zone->tones; ts; ts=ts->next) {
00417       if (strcasecmp(indication,ts->name)==0) {
00418          /* found indication! */
00419          ast_mutex_unlock(&tzlock);
00420          return ts;
00421       }
00422    }
00423    /* nothing found, sorry */
00424    ast_mutex_unlock(&tzlock);
00425    return 0;
00426 }

struct tone_zone* ast_get_indication_zone ( const char *  country  ) 

Definition at line 371 of file indications.c.

References tone_zone::alias, ast_mutex_lock(), ast_mutex_unlock(), ast_strlen_zero(), tone_zone::country, current_tonezone, tone_zone::next, tone_zones, and tzlock.

Referenced by ast_set_indication_country(), func_channel_write_real(), handle_add_indication(), and handle_remove_indication().

00372 {
00373    struct tone_zone *tz;
00374    int alias_loop = 0;
00375 
00376    if (ast_strlen_zero(country)) {
00377       /* No country specified?  Return the default or the first in the list */
00378       return current_tonezone ? current_tonezone : tone_zones;
00379    }
00380 
00381    ast_mutex_lock(&tzlock);
00382    do {
00383       for (tz=tone_zones; tz; tz=tz->next) {
00384          if (strcasecmp(country,tz->country)==0) {
00385             /* tone_zone found */
00386             if (tz->alias && tz->alias[0]) {
00387                country = tz->alias;
00388                break;
00389             }
00390             ast_mutex_unlock(&tzlock);
00391             return tz;
00392          }
00393       }
00394    } while (++alias_loop<20 && tz);
00395    ast_mutex_unlock(&tzlock);
00396    if (alias_loop==20)
00397       ast_log(LOG_NOTICE,"Alias loop for '%s' forcefull broken\n",country);
00398    /* nothing found, sorry */
00399    return 0;
00400 }

int ast_playtones_start ( struct ast_channel chan,
int  vol,
const char *  tonelist,
int  interruptible 
)

Definition at line 212 of file indications.c.

00213 {
00214    char *s, *data = ast_strdupa(playlst); /* cute */
00215    struct playtones_def d = { vol, -1, 0, 1, NULL};
00216    char *stringp;
00217    char *separator;
00218    
00219    if (vol < 1)
00220       d.vol = 7219; /* Default to -8db */
00221 
00222    d.interruptible = interruptible;
00223    
00224    stringp=data;
00225    /* the stringp/data is not null here */
00226    /* check if the data is separated with '|' or with ',' by default */
00227    if (strchr(stringp,'|'))
00228       separator = "|";
00229    else
00230       separator = ",";
00231    s = strsep(&stringp,separator);
00232    while (s && *s) {
00233       int freq1, freq2, time, modulate=0, midinote=0;
00234 
00235       if (s[0]=='!')
00236          s++;
00237       else if (d.reppos == -1)
00238          d.reppos = d.nitems;
00239       if (sscanf(s, "%30d+%30d/%30d", &freq1, &freq2, &time) == 3) {
00240          /* f1+f2/time format */
00241       } else if (sscanf(s, "%30d+%30d", &freq1, &freq2) == 2) {
00242          /* f1+f2 format */
00243          time = 0;
00244       } else if (sscanf(s, "%30d*%30d/%30d", &freq1, &freq2, &time) == 3) {
00245          /* f1*f2/time format */
00246          modulate = 1;
00247       } else if (sscanf(s, "%30d*%30d", &freq1, &freq2) == 2) {
00248          /* f1*f2 format */
00249          time = 0;
00250          modulate = 1;
00251       } else if (sscanf(s, "%30d/%30d", &freq1, &time) == 2) {
00252          /* f1/time format */
00253          freq2 = 0;
00254       } else if (sscanf(s, "%30d", &freq1) == 1) {
00255          /* f1 format */
00256          freq2 = 0;
00257          time = 0;
00258       } else if (sscanf(s, "M%30d+M%30d/%30d", &freq1, &freq2, &time) == 3) {
00259          /* Mf1+Mf2/time format */
00260          midinote = 1;
00261       } else if (sscanf(s, "M%30d+M%30d", &freq1, &freq2) == 2) {
00262          /* Mf1+Mf2 format */
00263          time = 0;
00264          midinote = 1;
00265       } else if (sscanf(s, "M%30d*M%30d/%30d", &freq1, &freq2, &time) == 3) {
00266          /* Mf1*Mf2/time format */
00267          modulate = 1;
00268          midinote = 1;
00269       } else if (sscanf(s, "M%30d*M%30d", &freq1, &freq2) == 2) {
00270          /* Mf1*Mf2 format */
00271          time = 0;
00272          modulate = 1;
00273          midinote = 1;
00274       } else if (sscanf(s, "M%30d/%30d", &freq1, &time) == 2) {
00275          /* Mf1/time format */
00276          freq2 = -1;
00277          midinote = 1;
00278       } else if (sscanf(s, "M%30d", &freq1) == 1) {
00279          /* Mf1 format */
00280          freq2 = -1;
00281          time = 0;
00282          midinote = 1;
00283       } else {
00284          ast_log(LOG_WARNING,"%s: tone component '%s' of '%s' is no good\n",chan->name,s,playlst);
00285          return -1;
00286       }
00287 
00288       if (midinote) {
00289          /* midi notes must be between 0 and 127 */
00290          if ((freq1 >= 0) && (freq1 <= 127))
00291             freq1 = midi_tohz[freq1];
00292          else
00293             freq1 = 0;
00294 
00295          if ((freq2 >= 0) && (freq2 <= 127))
00296             freq2 = midi_tohz[freq2];
00297          else
00298             freq2 = 0;
00299       }
00300 
00301       if (!(d.items = ast_realloc(d.items, (d.nitems + 1) * sizeof(*d.items)))) {
00302          return -1;
00303       }
00304       d.items[d.nitems].fac1 = 2.0 * cos(2.0 * M_PI * (freq1 / 8000.0)) * 32768.0;
00305       d.items[d.nitems].init_v2_1 = sin(-4.0 * M_PI * (freq1 / 8000.0)) * d.vol;
00306       d.items[d.nitems].init_v3_1 = sin(-2.0 * M_PI * (freq1 / 8000.0)) * d.vol;
00307 
00308       d.items[d.nitems].fac2 = 2.0 * cos(2.0 * M_PI * (freq2 / 8000.0)) * 32768.0;
00309       d.items[d.nitems].init_v2_2 = sin(-4.0 * M_PI * (freq2 / 8000.0)) * d.vol;
00310       d.items[d.nitems].init_v3_2 = sin(-2.0 * M_PI * (freq2 / 8000.0)) * d.vol;
00311       d.items[d.nitems].duration = time;
00312       d.items[d.nitems].modulate = modulate;
00313       d.nitems++;
00314 
00315       s = strsep(&stringp,separator);
00316    }
00317 
00318    if (ast_activate_generator(chan, &playtones, &d)) {
00319       free(d.items);
00320       return -1;
00321    }
00322    return 0;
00323 }

void ast_playtones_stop ( struct ast_channel chan  ) 

Stop the tones from playing

Definition at line 325 of file indications.c.

00326 {
00327    ast_deactivate_generator(chan);
00328 }

int ast_register_indication ( struct tone_zone zone,
const char *  indication,
const char *  tonelist 
)

Definition at line 525 of file indications.c.

References tone_zone::alias, ast_malloc, ast_mutex_lock(), ast_mutex_unlock(), ast_strdup, tone_zone_sound::data, free, tone_zone_sound::name, tone_zone_sound::next, tone_zone::tones, and tzlock.

Referenced by handle_add_indication().

00526 {
00527    struct tone_zone_sound *ts,*ps;
00528 
00529    /* is it an alias? stop */
00530    if (zone->alias[0])
00531       return -1;
00532 
00533    ast_mutex_lock(&tzlock);
00534    for (ps=NULL,ts=zone->tones; ts; ps=ts,ts=ts->next) {
00535       if (strcasecmp(indication,ts->name)==0) {
00536          /* indication already there, replace */
00537          free((void*)ts->name);
00538          free((void*)ts->data);
00539          break;
00540       }
00541    }
00542    if (!ts) {
00543       /* not there, we have to add */
00544       if (!(ts = ast_malloc(sizeof(*ts)))) {
00545          ast_mutex_unlock(&tzlock);
00546          return -2;
00547       }
00548       ts->next = NULL;
00549    }
00550    if (!(ts->name = ast_strdup(indication)) || !(ts->data = ast_strdup(tonelist))) {
00551       ast_mutex_unlock(&tzlock);
00552       return -2;
00553    }
00554    if (ps)
00555       ps->next = ts;
00556    else
00557       zone->tones = ts;
00558    ast_mutex_unlock(&tzlock);
00559    return 0;
00560 }

int ast_register_indication_country ( struct tone_zone country  ) 

Definition at line 446 of file indications.c.

References ast_mutex_lock(), ast_mutex_unlock(), tone_zone::country, current_tonezone, free_zone(), tone_zone::next, tone_zones, and tzlock.

Referenced by handle_add_indication(), and ind_load_module().

00447 {
00448    struct tone_zone *tz,*pz;
00449 
00450    ast_mutex_lock(&tzlock);
00451    for (pz=NULL,tz=tone_zones; tz; pz=tz,tz=tz->next) {
00452       if (strcasecmp(zone->country,tz->country)==0) {
00453          /* tone_zone already there, replace */
00454          zone->next = tz->next;
00455          if (pz)
00456             pz->next = zone;
00457          else
00458             tone_zones = zone;
00459          /* if we are replacing the default zone, re-point it */
00460          if (tz == current_tonezone)
00461             current_tonezone = zone;
00462          /* now free the previous zone */
00463          free_zone(tz);
00464          ast_mutex_unlock(&tzlock);
00465          return 0;
00466       }
00467    }
00468    /* country not there, add */
00469    zone->next = NULL;
00470    if (pz)
00471       pz->next = zone;
00472    else
00473       tone_zones = zone;
00474    ast_mutex_unlock(&tzlock);
00475 
00476    if (option_verbose > 2)
00477       ast_verbose(VERBOSE_PREFIX_3 "Registered indication country '%s'\n",zone->country);
00478    return 0;
00479 }

int ast_set_indication_country ( const char *  country  ) 

Definition at line 356 of file indications.c.

References ast_get_indication_zone(), ast_verbose(), current_tonezone, option_verbose, and VERBOSE_PREFIX_3.

Referenced by ind_load_module().

00357 {
00358    if (country) {
00359       struct tone_zone *z = ast_get_indication_zone(country);
00360       if (z) {
00361          if (option_verbose > 2)
00362             ast_verbose(VERBOSE_PREFIX_3 "Setting default indication country to '%s'\n",country);
00363          current_tonezone = z;
00364          return 0;
00365       }
00366    }
00367    return 1; /* not found */
00368 }

int ast_unregister_indication ( struct tone_zone zone,
const char *  indication 
)

Definition at line 563 of file indications.c.

References tone_zone::alias, ast_mutex_lock(), ast_mutex_unlock(), tone_zone_sound::data, free, tone_zone_sound::name, tone_zone_sound::next, tone_zone::tones, and tzlock.

Referenced by handle_remove_indication().

00564 {
00565    struct tone_zone_sound *ts,*ps = NULL, *tmp;
00566    int res = -1;
00567 
00568    /* is it an alias? stop */
00569    if (zone->alias[0])
00570       return -1;
00571 
00572    ast_mutex_lock(&tzlock);
00573    ts = zone->tones;
00574    while (ts) {
00575       if (strcasecmp(indication,ts->name)==0) {
00576          /* indication found */
00577          tmp = ts->next;
00578          if (ps)
00579             ps->next = tmp;
00580          else
00581             zone->tones = tmp;
00582          free((void*)ts->name);
00583          free((void*)ts->data);
00584          free(ts);
00585          ts = tmp;
00586          res = 0;
00587       }
00588       else {
00589          /* next zone please */
00590          ps = ts;
00591          ts = ts->next;
00592       }
00593    }
00594    /* indication not found, goodbye */
00595    ast_mutex_unlock(&tzlock);
00596    return res;
00597 }

int ast_unregister_indication_country ( const char *  country  ) 

Definition at line 483 of file indications.c.

References tone_zone::alias, ast_log(), ast_mutex_lock(), ast_mutex_unlock(), ast_verbose(), tone_zone::country, current_tonezone, free_zone(), LOG_NOTICE, tone_zone::next, option_verbose, tone_zones, tzlock, and VERBOSE_PREFIX_3.

Referenced by handle_add_indication(), handle_remove_indication(), reload(), and unload_module().

00484 {
00485    struct tone_zone *tz, *pz = NULL, *tmp;
00486    int res = -1;
00487 
00488    ast_mutex_lock(&tzlock);
00489    tz = tone_zones;
00490    while (tz) {
00491       if (country==NULL ||
00492           (strcasecmp(country, tz->country)==0 ||
00493            strcasecmp(country, tz->alias)==0)) {
00494          /* tone_zone found, remove */
00495          tmp = tz->next;
00496          if (pz)
00497             pz->next = tmp;
00498          else
00499             tone_zones = tmp;
00500          /* if we are unregistering the default country, w'll notice */
00501          if (tz == current_tonezone) {
00502             ast_log(LOG_NOTICE,"Removed default indication country '%s'\n",tz->country);
00503             current_tonezone = NULL;
00504          }
00505          if (option_verbose > 2)
00506             ast_verbose(VERBOSE_PREFIX_3 "Unregistered indication country '%s'\n",tz->country);
00507          free_zone(tz);
00508          if (tone_zones == tz)
00509             tone_zones = tmp;
00510          tz = tmp;
00511          res = 0;
00512       }
00513       else {
00514          /* next zone please */
00515          pz = tz;
00516          tz = tz->next;
00517       }
00518    }
00519    ast_mutex_unlock(&tzlock);
00520    return res;
00521 }

struct tone_zone* ast_walk_indications ( const struct tone_zone cur  ) 

Definition at line 339 of file indications.c.

References ast_mutex_lock(), ast_mutex_unlock(), tone_zone::next, tone_zones, and tzlock.

Referenced by handle_show_indications().

00340 {
00341    struct tone_zone *tz;
00342 
00343    if (cur == NULL)
00344       return tone_zones;
00345    ast_mutex_lock(&tzlock);
00346    for (tz = tone_zones; tz; tz = tz->next)
00347       if (tz == cur)
00348          break;
00349    if (tz)
00350       tz = tz->next;
00351    ast_mutex_unlock(&tzlock);
00352    return tz;
00353 }


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