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app_morsecode: Add American Morse code
Previously, the Morsecode application only supported international Morse code. This adds support for American Morse code and adds an option to configure the frequency used in off intervals. Additionally, the application checks for hangup between tones to prevent application execution from continuing after hangup. ASTERISK-29541 Change-Id: I172431a2e18e6527d577e74adfb05b154cba7bd4
1 parent 498db70 commit 5c9d7a0

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Lines changed: 145 additions & 29 deletions

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‎apps/app_morsecode.c‎

Lines changed: 139 additions & 29 deletions
Original file line numberDiff line numberDiff line change
@@ -3,6 +3,8 @@
33
*
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* Copyright (c) 2006, Tilghman Lesher. All rights reserved.
55
*
6+
* Updated by Naveen Albert <asterisk@phreaknet.org>
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*
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* Tilghman Lesher <app_morsecode__v001@the-tilghman.com>
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*
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* This code is released by the author with no restrictions on usage.
@@ -20,6 +22,7 @@
2022
* \brief Morsecode application
2123
*
2224
* \author Tilghman Lesher <app_morsecode__v001@the-tilghman.com>
25+
* \author Naveen Albert <asterisk@phreaknet.org>
2326
*
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* \ingroup applications
2528
*/
@@ -58,6 +61,14 @@
5861
<variable name="MORSETONE">
5962
<para>The pitch of the tone in (Hz), default is 800</para>
6063
</variable>
64+
<variable name="MORSESPACETONE">
65+
<para>The pitch of the spaces in (Hz), default is 0</para>
66+
</variable>
67+
<variable name="MORSETYPE">
68+
<para>The code type to use (AMERICAN for standard American Morse
69+
or INTERNATIONAL for international code.
70+
Default is INTERNATIONAL).</para>
71+
</variable>
6172
</variablelist>
6273
</description>
6374
<see-also>
@@ -68,7 +79,7 @@
6879
***/
6980
static const char app_morsecode[] = "Morsecode";
7081

71-
static const char * const morsecode[] = {
82+
static const char * const internationalcode[] = {
7283
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 0-15 */
7384
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 16-31 */
7485
" ", /* 32 - <space> */
@@ -95,80 +106,179 @@ static const char * const morsecode[] = {
95106
"", /* 62 - > */
96107
"..--..", /* 63 - ? */
97108
".--.-.", /* 64 - @ */
98-
".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--",
99-
"-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..",
109+
".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--", /* A-M */
110+
"-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..", /* N-Z */
100111
"-.--.-", /* 91 - [ (really '(') */
101112
"-..-.", /* 92 - \ (really '/') */
102113
"-.--.-", /* 93 - ] (really ')') */
103114
"", /* 94 - ^ */
104115
"..--.-", /* 95 - _ */
105116
".----.", /* 96 - ` */
106-
".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--",
107-
"-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..",
117+
".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--", /* a-m */
118+
"-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..", /* n-z */
108119
"-.--.-", /* 123 - { (really '(') */
109120
"", /* 124 - | */
110121
"-.--.-", /* 125 - } (really ')') */
111122
"-..-.", /* 126 - ~ (really bar) */
112123
". . .", /* 127 - <del> (error) */
113124
};
114125

115-
static void playtone(struct ast_channel *chan, int tone, int len)
126+
static const char * const americanmorsecode[] = {
127+
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 0-15 */
128+
"", "", "", "", "", "", "", "", "", "", "", "", "", "", "", "", /* 16-31 */
129+
" ", /* 32 - <space> */
130+
"---.", /* 33 - ! */
131+
"..-. -.",/* 34 - " (QN)*/
132+
"", /* 35 - # */
133+
"... .-..",/* 36 - $ (SX) */
134+
"", /* 37 - % */
135+
". ...", /* 38 - & (ES) */
136+
"..-. .-..",/* 39 - ' (QX) */
137+
"..... -.", /* 40 - ( (PN) */
138+
"..... .. ..", /* 41 - ) (PY) */
139+
"", /* 42 - * */
140+
"", /* 43 - + */
141+
".-.-", /* 44 - , */
142+
".... .-..",/* 45 - (HX) */
143+
"..--..", /* 46 - . */
144+
"..- -", /* 47 - / (UT) */
145+
".--.", "..-..", "...-.", "....-", "---", "......", "--..", "-....", "-..-", "0", /* 48-57 - 0-9 */
146+
"-.- . .",/* 58 - : (KO) */
147+
"... ..", /* 59 - ; */
148+
"", /* 60 - < */
149+
"-...-", /* 61 - = (paragraph mark) */
150+
"", /* 62 - > */
151+
"-..-.", /* 63 - ? */
152+
".--.-.", /* 64 - @ */
153+
".-", "-...", ".. .", "-..", ".", ".-.", "--.", "....", "..", ".-.-", "-.-", "L", "--", /* A-M */
154+
"-.", ". .", ".....", "..-.", ". ..", "...", "-", "..-", "...-", ".--", ".-..", ".. ..", "... .", /* N-Z */
155+
"..... -.", /* 91 - [ (really '(') */
156+
"..- -", /* 92 - \ (really '/') */
157+
"..... .. ..", /* 93 - ] (really ')') */
158+
"", /* 94 - ^ */
159+
"..--.-", /* 95 - _ */
160+
".----.", /* 96 - ` */
161+
".-", "-...", ".. .", "-..", ".", ".-.", "--.", "....", "..", ".-.-", "-.-", "L", "--", /* a-m */
162+
"-.", ". .", ".....", "..-.", ". ..", "...", "-", "..-", "...-", ".--", ".-..", ".. ..", "... .", /* n-z */
163+
"..... -.", /* 123 - { (really '(') */
164+
"", /* 124 - | */
165+
"..... .. ..", /* 125 - } (really ')') */
166+
"..- -", /* 126 - ~ (really bar) */
167+
". . .", /* 127 - <del> (error) */
168+
};
169+
170+
static int playtone(struct ast_channel *chan, int tone, int len)
116171
{
172+
int res;
117173
char dtmf[20];
118174
snprintf(dtmf, sizeof(dtmf), "%d/%d", tone, len);
119175
ast_playtones_start(chan, 0, dtmf, 0);
120-
ast_safe_sleep(chan, len);
176+
res = ast_safe_sleep(chan, len);
121177
ast_playtones_stop(chan);
178+
return res;
122179
}
123180

124181
static int morsecode_exec(struct ast_channel *chan, const char *data)
125182
{
126-
int res=0, ditlen, tone;
183+
int res = 0, ditlen, tone, toneoff, digit2;
127184
const char *digit;
128-
const char *ditlenc, *tonec;
185+
const char *ditlenc, *tonec, *toneb, *codetype;
129186

130187
if (ast_strlen_zero(data)) {
131188
ast_log(LOG_WARNING, "Syntax: Morsecode(<string>) - no argument found\n");
132189
return 0;
133190
}
134191

135-
/* Use variable MORESEDITLEN, if set (else 80) */
136192
ast_channel_lock(chan);
193+
/* Use variable MORESEDITLEN, if set (else 80) */
137194
ditlenc = pbx_builtin_getvar_helper(chan, "MORSEDITLEN");
138195
if (ast_strlen_zero(ditlenc) || (sscanf(ditlenc, "%30d", &ditlen) != 1)) {
139196
ditlen = 80;
140197
}
141-
ast_channel_unlock(chan);
142198

143199
/* Use variable MORSETONE, if set (else 800) */
144200
ast_channel_lock(chan);
145201
tonec = pbx_builtin_getvar_helper(chan, "MORSETONE");
146202
if (ast_strlen_zero(tonec) || (sscanf(tonec, "%30d", &tone) != 1)) {
147203
tone = 800;
148204
}
149-
ast_channel_unlock(chan);
150205

151-
for (digit = data; *digit; digit++) {
152-
int digit2 = *digit;
153-
const char *dahdit;
154-
if (digit2 < 0) {
155-
continue;
206+
/* Use variable MORSESPACETONE, if set (else 0) */
207+
208+
toneb = pbx_builtin_getvar_helper(chan, "MORSESPACETONE");
209+
if (ast_strlen_zero(toneb) || (sscanf(toneb, "%30d", &toneoff) != 1)) {
210+
toneoff = 0;
211+
}
212+
213+
/* Use variable MORSETYPE, if set (else INTERNATIONAL) */
214+
codetype = pbx_builtin_getvar_helper(chan, "MORSETYPE");
215+
if (!codetype || strcmp(codetype, "AMERICAN")) {
216+
codetype = "INTERNATIONAL";
217+
}
218+
219+
if (!strcmp(codetype, "AMERICAN")) {
220+
ast_channel_unlock(chan);
221+
for (digit = data; *digit; digit++) {
222+
const char *dahdit;
223+
digit2 = *digit;
224+
if (digit2 < 0 || digit2 > 127) {
225+
continue;
226+
}
227+
for (dahdit = americanmorsecode[digit2]; *dahdit; dahdit++) {
228+
if (*dahdit == '-') {
229+
res = playtone(chan, tone, 3 * ditlen);
230+
} else if (*dahdit == '.') {
231+
res = playtone(chan, tone, 1 * ditlen);
232+
} else if (*dahdit == 'L' || *dahdit == 'l') {
233+
res = playtone(chan, tone, 6 * ditlen); /* long dash */
234+
} else if (*dahdit == '0') {
235+
res = playtone(chan, tone, 9 * ditlen); /* extra long dash */
236+
} else if (*dahdit == ' ') { /* space char (x20) = 6 dot lengths */
237+
/* Intra-char pauses, specific to American Morse */
238+
res = playtone(chan, toneoff, 3 * ditlen);
239+
} else {
240+
/* Account for ditlen of silence immediately following */
241+
res = playtone(chan, toneoff, 2 * ditlen);
242+
}
243+
244+
/* Pause slightly between each dit and dah */
245+
res = playtone(chan, toneoff, 1 * ditlen);
246+
if (res)
247+
break;
248+
}
249+
/* Pause between characters */
250+
res = playtone(chan, toneoff, 3 * ditlen);
251+
if (res)
252+
break;
156253
}
157-
for (dahdit = morsecode[digit2]; *dahdit; dahdit++) {
158-
if (*dahdit == '-') {
159-
playtone(chan, tone, 3 * ditlen);
160-
} else if (*dahdit == '.') {
161-
playtone(chan, tone, 1 * ditlen);
162-
} else {
163-
/* Account for ditlen of silence immediately following */
164-
playtone(chan, 0, 2 * ditlen);
254+
} else { /* International */
255+
ast_channel_unlock(chan);
256+
for (digit = data; *digit; digit++) {
257+
const char *dahdit;
258+
digit2 = *digit;
259+
if (digit2 < 0 || digit2 > 127) {
260+
continue;
165261
}
262+
for (dahdit = internationalcode[digit2]; *dahdit; dahdit++) {
263+
if (*dahdit == '-') {
264+
res = playtone(chan, tone, 3 * ditlen);
265+
} else if (*dahdit == '.') {
266+
res = playtone(chan, tone, 1 * ditlen);
267+
} else {
268+
/* Account for ditlen of silence immediately following */
269+
res = playtone(chan, toneoff, 2 * ditlen);
270+
}
166271

167-
/* Pause slightly between each dit and dah */
168-
playtone(chan, 0, 1 * ditlen);
272+
/* Pause slightly between each dit and dah */
273+
res = playtone(chan, toneoff, 1 * ditlen);
274+
if (res)
275+
break;
276+
}
277+
/* Pause between characters */
278+
res = playtone(chan, toneoff, 2 * ditlen);
279+
if (res)
280+
break;
169281
}
170-
/* Pause between characters */
171-
playtone(chan, 0, 2 * ditlen);
172282
}
173283

174284
return res;

‎doc/CHANGES-staging/app_morsecode.txt‎

Lines changed: 6 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,6 @@
1+
Subject: app_morsecode
2+
3+
Extends the Morsecode application by adding support for
4+
American Morse code and adds a configurable option
5+
for the frequency used in off intervals.
6+

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