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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (c) 2006, Tilghman Lesher. All rights reserved.
*
* Tilghman Lesher <app_morsecode__v001@the-tilghman.com>
*
* This code is released by the author with no restrictions on usage.
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
*/
/*! \file
*
* \brief Morsecode application
*
* \author Tilghman Lesher <app_morsecode__v001@the-tilghman.com>
*
* \ingroup applications
*/
/*** MODULEINFO
<support_level>extended</support_level>
***/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision: 336732 $")
#include "asterisk/file.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/indications.h"
/*** DOCUMENTATION
<application name="Morsecode" language="en_US">
<synopsis>
Plays morse code.
</synopsis>
<syntax>
<parameter name="string" required="true">
<para>String to playback as morse code to channel</para>
</parameter>
</syntax>
<description>
<para>Plays the Morse code equivalent of the passed string.</para>
<para>This application does not automatically answer and should be preceeded by
an application such as Answer() or Progress().</para>
<para>This application uses the following variables:</para>
<variablelist>
<variable name="MORSEDITLEN">
<para>Use this value in (ms) for length of dit</para>
</variable>
<variable name="MORSETONE">
<para>The pitch of the tone in (Hz), default is 800</para>
</variable>
</variablelist>
</description>
<see-also>
<ref type="application">SayAlpha</ref>
<ref type="application">SayPhonetic</ref>
</see-also>
</application>
***/
static const char app_morsecode[] = "Morsecode";
static const char * const morsecode[] = {
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 0-15 */
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 16-31 */
" ", /* 32 - <space> */
".-.-.-", /* 33 - ! */
".-..-.", /* 34 - " */
"", /* 35 - # */
"", /* 36 - $ */
"", /* 37 - % */
"", /* 38 - & */
".----.", /* 39 - ' */
"-.--.-", /* 40 - ( */
"-.--.-", /* 41 - ) */
"", /* 42 - * */
"", /* 43 - + */
"--..--", /* 44 - , */
"-....-", /* 45 - - */
".-.-.-", /* 46 - . */
"-..-.", /* 47 - / */
"-----", ".----", "..---", "...--", "....-", ".....", "-....", "--...", "---..", "----.", /* 48-57 - 0-9 */
"---...", /* 58 - : */
"-.-.-.", /* 59 - ; */
"", /* 60 - < */
"-...-", /* 61 - = */
"", /* 62 - > */
"..--..", /* 63 - ? */
".--.-.", /* 64 - @ */
".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--",
"-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..",
"-.--.-", /* 91 - [ (really '(') */
"-..-.", /* 92 - \ (really '/') */
"-.--.-", /* 93 - ] (really ')') */
"", /* 94 - ^ */
"..--.-", /* 95 - _ */
".----.", /* 96 - ` */
".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--",
"-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..",
"-.--.-", /* 123 - { (really '(') */
"", /* 124 - | */
"-.--.-", /* 125 - } (really ')') */
"-..-.", /* 126 - ~ (really bar) */
". . .", /* 127 - <del> (error) */
};
static void playtone(struct ast_channel *chan, int tone, int len)
{
char dtmf[20];
snprintf(dtmf, sizeof(dtmf), "%d/%d", tone, len);
ast_playtones_start(chan, 0, dtmf, 0);
ast_safe_sleep(chan, len);
ast_playtones_stop(chan);
}
static int morsecode_exec(struct ast_channel *chan, const char *data)
{
int res=0, ditlen, tone;
const char *digit;
const char *ditlenc, *tonec;
if (ast_strlen_zero(data)) {
ast_log(LOG_WARNING, "Syntax: Morsecode(<string>) - no argument found\n");
return 0;
}
/* Use variable MORESEDITLEN, if set (else 80) */
ast_channel_lock(chan);
ditlenc = pbx_builtin_getvar_helper(chan, "MORSEDITLEN");
if (ast_strlen_zero(ditlenc) || (sscanf(ditlenc, "%30d", &ditlen) != 1)) {
ditlen = 80;
}
ast_channel_unlock(chan);
/* Use variable MORSETONE, if set (else 800) */
ast_channel_lock(chan);
tonec = pbx_builtin_getvar_helper(chan, "MORSETONE");
if (ast_strlen_zero(tonec) || (sscanf(tonec, "%30d", &tone) != 1)) {
tone = 800;
}
ast_channel_unlock(chan);
for (digit = data; *digit; digit++) {
int digit2 = *digit;
const char *dahdit;
if (digit2 < 0) {
continue;
}
for (dahdit = morsecode[digit2]; *dahdit; dahdit++) {
if (*dahdit == '-') {
playtone(chan, tone, 3 * ditlen);
} else if (*dahdit == '.') {
playtone(chan, tone, 1 * ditlen);
} else {
/* Account for ditlen of silence immediately following */
playtone(chan, 0, 2 * ditlen);
}
/* Pause slightly between each dit and dah */
playtone(chan, 0, 1 * ditlen);
}
/* Pause between characters */
playtone(chan, 0, 2 * ditlen);
}
return res;
}
static int unload_module(void)
{
return ast_unregister_application(app_morsecode);
}
static int load_module(void)
{
return ast_register_application_xml(app_morsecode, morsecode_exec);
}
AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Morse code");
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