Sat Aug 6 00:39:35 2011

Asterisk developer's documentation


app_morsecode.c File Reference

Morsecode application. More...

#include "asterisk.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "asterisk/file.h"
#include "asterisk/logger.h"
#include "asterisk/options.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/indications.h"

Go to the source code of this file.

Functions

static void __reg_module (void)
static void __unreg_module (void)
static int load_module (void)
static int morsecode_exec (struct ast_channel *chan, void *data)
static void playtone (struct ast_channel *chan, int tone, int len)
static int unload_module (void)

Variables

static struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT | AST_MODFLAG_BUILDSUM, .description = "Morse code" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "361d7bb937402d51e4658efb5b4d76e4" , .load = load_module, .unload = unload_module, }
static char * app_morsecode = "Morsecode"
static const struct ast_module_infoast_module_info = &__mod_info
static char * morsecode []
static char * morsecode_descrip
static char * morsecode_synopsis = "Plays morse code"


Detailed Description

Morsecode application.

Author:
Tilghman Lesher <app_morsecode__v001@the-tilghman.com>

Definition in file app_morsecode.c.


Function Documentation

static void __reg_module ( void   )  [static]

Definition at line 179 of file app_morsecode.c.

static void __unreg_module ( void   )  [static]

Definition at line 179 of file app_morsecode.c.

static int load_module ( void   )  [static]

Definition at line 174 of file app_morsecode.c.

References ast_register_application(), and morsecode_exec().

static int morsecode_exec ( struct ast_channel chan,
void *  data 
) [static]

Definition at line 109 of file app_morsecode.c.

References ast_log(), ast_module_user_add, ast_module_user_remove, ast_strlen_zero(), ast_module_user::chan, LOG_WARNING, pbx_builtin_getvar_helper(), and playtone().

Referenced by load_module().

00110 {
00111    int res=0, ditlen, tone;
00112    char *digit;
00113    const char *ditlenc, *tonec;
00114    struct ast_module_user *u;
00115 
00116    u = ast_module_user_add(chan);
00117 
00118    if (ast_strlen_zero(data)) {
00119       ast_log(LOG_WARNING, "Syntax: Morsecode(<string>) - no argument found\n");
00120       ast_module_user_remove(u);
00121       return 0;
00122    }
00123 
00124    /* Use variable MORESEDITLEN, if set (else 80) */
00125    ditlenc = pbx_builtin_getvar_helper(chan, "MORSEDITLEN");
00126    if (ast_strlen_zero(ditlenc) || (sscanf(ditlenc, "%30d", &ditlen) != 1)) {
00127       ditlen = 80;
00128    }
00129 
00130    /* Use variable MORSETONE, if set (else 800) */
00131    tonec = pbx_builtin_getvar_helper(chan, "MORSETONE");
00132    if (ast_strlen_zero(tonec) || (sscanf(tonec, "%30d", &tone) != 1)) {
00133       tone = 800;
00134    }
00135 
00136    for (digit = data; *digit; digit++) {
00137       int digit2 = *digit;
00138       char *dahdit;
00139       if (digit2 < 0) {
00140          continue;
00141       }
00142       for (dahdit = morsecode[digit2]; *dahdit; dahdit++) {
00143          if (*dahdit == '-') {
00144             playtone(chan, tone, 3 * ditlen);
00145          } else if (*dahdit == '.') {
00146             playtone(chan, tone, 1 * ditlen);
00147          } else {
00148             /* Account for ditlen of silence immediately following */
00149             playtone(chan, 0, 2 * ditlen);
00150          }
00151 
00152          /* Pause slightly between each dit and dah */
00153          playtone(chan, 0, 1 * ditlen);
00154       }
00155       /* Pause between characters */
00156       playtone(chan, 0, 2 * ditlen);
00157    }
00158 
00159    ast_module_user_remove(u);
00160    return res;
00161 }

static void playtone ( struct ast_channel chan,
int  tone,
int  len 
) [static]

Definition at line 100 of file app_morsecode.c.

References ast_playtones_start(), ast_playtones_stop(), and ast_safe_sleep().

Referenced by morsecode_exec().

00101 {
00102    char dtmf[20];
00103    snprintf(dtmf, sizeof(dtmf), "%d/%d", tone, len);
00104    ast_playtones_start(chan, 0, dtmf, 0);
00105    ast_safe_sleep(chan, len);
00106    ast_playtones_stop(chan);
00107 }

static int unload_module ( void   )  [static]

Definition at line 163 of file app_morsecode.c.

References ast_module_user_hangup_all, and ast_unregister_application().

00164 {
00165    int res;
00166 
00167    res = ast_unregister_application(app_morsecode);
00168 
00169    ast_module_user_hangup_all();
00170 
00171    return res;
00172 }


Variable Documentation

struct ast_module_info __mod_info = { .name = AST_MODULE, .flags = AST_MODFLAG_DEFAULT | AST_MODFLAG_BUILDSUM, .description = "Morse code" , .key = "This paragraph is copyright (c) 2006 by Digium, Inc. \In order for your module to load, it must return this \key via a function called \"key\". Any code which \includes this paragraph must be licensed under the GNU \General Public License version 2 or later (at your \option). In addition to Digium's general reservations \of rights, Digium expressly reserves the right to \allow other parties to license this paragraph under \different terms. Any use of Digium, Inc. trademarks or \logos (including \"Asterisk\" or \"Digium\") without \express written permission of Digium, Inc. is prohibited.\n" , .buildopt_sum = "361d7bb937402d51e4658efb5b4d76e4" , .load = load_module, .unload = unload_module, } [static]

Definition at line 179 of file app_morsecode.c.

char* app_morsecode = "Morsecode" [static]

Definition at line 44 of file app_morsecode.c.

const struct ast_module_info* ast_module_info = &__mod_info [static]

Definition at line 179 of file app_morsecode.c.

char* morsecode[] [static]

Definition at line 56 of file app_morsecode.c.

char* morsecode_descrip [static]

Definition at line 48 of file app_morsecode.c.

char* morsecode_synopsis = "Plays morse code" [static]

Definition at line 46 of file app_morsecode.c.


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