2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)morse.c 8.1 (Berkeley) 5/31/93
35 * $FreeBSD: src/games/morse/morse.c,v 1.12.2.2 2002/03/12 17:45:15 phantom Exp $
36 * $DragonFly: src/games/morse/morse.c,v 1.8 2008/05/30 21:47:04 corecode Exp $
40 * Taught to send *real* morse by Lyndon Nerenberg (VE7TCP/VE6BBM)
41 * <lyndon@orthanc.com>
45 #include <sys/soundcard.h>
65 static const struct morsetab mtab[] = {
114 {'!', "-.-.--"}, /* KW */
118 {'=', "-...-"}, /* BT */
121 {'(', "-.--."}, /* KN */
124 {'+', ".-.-."}, /* AR */
127 {'@', ".--.-."}, /* AC */
133 static const struct morsetab iso8859tab[] = {
148 static const struct morsetab koi8rtab[] = {
150 * the cyrillic alphabet; you'll need a KOI8R font in order
151 * to see the actual characters
154 {'Â', "-..."}, /* be */
155 {'×', ".--"}, /* ve */
156 {'Ç', "--."}, /* ge */
157 {'Ä', "-.."}, /* de */
159 {'£', "."}, /* yo, the same as ye */
160 {'Ö', "...-"}, /* she */
161 {'Ú', "--.."}, /* ze */
163 {'Ê', ".---"}, /* i kratkoye */
164 {'Ë', "-.-"}, /* ka */
165 {'Ì', ".-.."}, /* el */
166 {'Í', "--"}, /* em */
167 {'Î', "-."}, /* en */
168 {'Ï', "---"}, /* o */
169 {'Ð', ".--."}, /* pe */
170 {'Ò', ".-."}, /* er */
171 {'Ó', "..."}, /* es */
173 {'Õ', "..-"}, /* u */
174 {'Æ', "..-."}, /* ef */
175 {'È', "...."}, /* kha */
176 {'Ã', "-.-."}, /* ce */
177 {'Þ', "---."}, /* che */
178 {'Û', "----"}, /* sha */
179 {'Ý', "--.-"}, /* shcha */
180 {'Ù', "-.--"}, /* yi */
181 {'Ø', "-..-"}, /* myakhkij znak */
182 {'Ü', "..-.."}, /* ae */
183 {'À', "..--"}, /* yu */
184 {'Ñ', ".-.-"}, /* ya */
194 void alloc_soundbuf(struct tone_data *, double, int);
195 void morse(char, int);
196 void show(const char *, int);
197 void play(const char *, int);
198 void ttyout(const char *, int);
199 void sighandler(int);
201 #define GETOPTOPTS "d:ef:opP:sw:W:"
203 "usage: morse [-s] [-e] [-p | -o] [-P device] [-d device] [-w speed] [-W speed] [-f frequency] [string ...]\n"
205 static int oflag, pflag, sflag, eflag;
206 static int wpm = 20; /* words per minute */
207 static int farnsworth = -1;
208 #define FREQUENCY 600
209 static int freq = FREQUENCY;
210 static char *device; /* for tty-controlled generator */
212 static struct tone_data tone_dot, tone_dash, tone_silence, tone_letter_silence;
213 #define DSP_RATE 44100
214 static const char *snddev = NULL;
218 #define WORD_SPACE (7 - CHAR_SPACE)
219 static float dot_clock, word_clock;
221 struct termios otty, ntty;
224 static const struct morsetab *hightab;
227 main(int argc, char **argv)
233 while ((ch = getopt(argc, argv, GETOPTOPTS)) != -1)
240 setvbuf(stdout, 0, _IONBF, 0);
261 farnsworth = atoi(optarg);
265 fputs(USAGE, stderr);
268 if (pflag + !!device + sflag > 1) {
269 fputs("morse: only one of -o, -p, -d and -s allowed\n", stderr);
272 if ((pflag || device) && ((wpm < 1) || (wpm > 60) || (farnsworth > 60))) {
273 fputs("morse: insane speed\n", stderr);
276 if ((pflag || device) && (freq == 0))
278 if (pflag || device) {
280 * A note on how to get to this magic 1.2:
281 * x WPM = 50*x dits per minute (norm word "PARIS").
282 * dits per sec = dits per minute / 60, thus
283 * dits per sec = 50 * x / 60 = x / (60 / 50) = x / 1.2
285 dot_clock = wpm / 1.2; /* dots/sec */
286 dot_clock = 1 / dot_clock; /* duration of a dot */
288 word_clock = dot_clock;
291 * This is how to get to this formula:
292 * PARIS = 22 dit (symbols) + 9 symbol spaces = 31 symbol times
295 * The symbol times are in dot_clock, so the spaces have to
296 * make up to reach the farnsworth time.
299 word_clock = (60.0 / farnsworth - 31 * dot_clock) / 19;
301 if (snddev == NULL) {
304 else /* only pflag */
309 snd_chan_param param;
311 if (oflag && strcmp(snddev, "-") == 0)
312 spkr = STDOUT_FILENO;
314 spkr = open(snddev, O_WRONLY, 0);
316 err(1, "%s", snddev);
317 param.play_rate = DSP_RATE;
318 param.play_format = AFMT_S16_NE;
320 param.rec_format = 0;
321 if (!oflag && ioctl(spkr, AIOSFMT, ¶m) != 0)
322 err(1, "%s: set format", snddev);
323 alloc_soundbuf(&tone_dot, dot_clock, 1);
324 alloc_soundbuf(&tone_dash, DASH_LEN * dot_clock, 1);
325 alloc_soundbuf(&tone_silence, dot_clock, 0);
326 alloc_soundbuf(&tone_letter_silence, word_clock, 0);
329 if ((line = open(device, O_WRONLY | O_NONBLOCK)) == -1) {
330 perror("open tty line");
333 if (tcgetattr(line, &otty) == -1) {
334 perror("tcgetattr() failed");
338 ntty.c_cflag |= CLOCAL;
339 tcsetattr(line, TCSANOW, &ntty);
340 lflags = fcntl(line, F_GETFL);
341 lflags &= ~O_NONBLOCK;
342 fcntl(line, F_SETFL, &lflags);
343 ioctl(line, TIOCMGET, &lflags);
344 lflags &= ~TIOCM_RTS;
346 ioctl(line, TIOCMSET, &lflags);
347 (void)signal(SIGHUP, sighandler);
348 (void)signal(SIGINT, sighandler);
349 (void)signal(SIGQUIT, sighandler);
350 (void)signal(SIGTERM, sighandler);
356 if (setlocale(LC_CTYPE, "") != NULL &&
357 *(codeset = nl_langinfo(CODESET)) != '\0') {
358 if (strcmp(codeset, "KOI8-R") == 0)
360 else if (strcmp(codeset, "ISO8859-1") == 0 ||
361 strcmp(codeset, "ISO8859-15") == 0)
362 hightab = iso8859tab;
368 for (p = *argv; *p; ++p) {
371 if (*p == '<' || *p == '>') {
375 if (strchr("> \r\n", *(p + 1)) != NULL)
385 while ((ch = getchar()) != EOF) {
396 if (strchr("> \r\n", tch) != NULL)
405 tcsetattr(line, TCSANOW, &otty);
410 alloc_soundbuf(struct tone_data *tone, double len, int on)
414 samples = DSP_RATE * len;
415 tone->len = samples * sizeof(*tone->data);
416 tone->data = malloc(tone->len);
417 if (tone->data == NULL)
420 bzero(tone->data, tone->len);
425 * We create a sinus with the specified frequency and smooth
426 * the edges to reduce key clicks.
428 for (i = 0; i < samples; i++) {
431 #define FILTER_SAMPLES 100
432 if (i < FILTER_SAMPLES || i > samples - FILTER_SAMPLES) {
439 if (i > FILTER_SAMPLES)
442 pow((double)(FILTER_SAMPLES - fi) /
448 if (i < FILTER_SAMPLES)
449 filter = (double)i / FILTER_SAMPLES;
451 filter = (double)(samples - i) / FILTER_SAMPLES;
454 tone->data[i] = 32767 * sin((double)i / samples * len * freq * 2 * M_PI) *
460 morse(char c, int prosign)
462 const struct morsetab *m;
464 if (isalpha((unsigned char)c))
465 c = tolower((unsigned char)c);
466 if ((c == '\r') || (c == '\n'))
480 for (m = ((unsigned char)c < 0x80? mtab: hightab);
481 m != NULL && m->inchar != '\0';
483 if (m->inchar == c) {
485 play(m->morse, prosign);
487 ttyout(m->morse, prosign);
489 show(m->morse, prosign);
495 show(const char *s, int prosign)
501 printf(" %s", *s == '.' ? "dit" : "dah");
507 play(const char *s, int prosign)
511 struct tone_data *tone;
514 * We don't need to usleep() here, as the sound device blocks.
516 for (c = s; *c != '\0'; c++) {
527 duration = WORD_SPACE;
528 tone = &tone_letter_silence;
531 errx(1, "invalid morse digit");
533 while (duration-- > 0)
534 write(spkr, tone->data, tone->len);
535 /* Only space within a symbol */
536 if (c[1] != '\0' || prosign)
537 write(spkr, tone_silence.data, tone_silence.len);
541 duration = CHAR_SPACE;
542 while (duration-- > 0)
543 write(spkr, tone_letter_silence.data, tone_letter_silence.len);
545 /* Sync out the audio data with other output */
547 ioctl(spkr, SNDCTL_DSP_SYNC, NULL);
551 ttyout(const char *s, int prosign)
554 int duration, on, lflags;
556 for (c = s; *c != '\0'; c++) {
560 duration = dot_clock;
564 duration = dot_clock * DASH_LEN;
568 duration = word_clock * WORD_SPACE;
575 ioctl(line, TIOCMGET, &lflags);
577 ioctl(line, TIOCMSET, &lflags);
582 ioctl(line, TIOCMGET, &lflags);
583 lflags &= ~TIOCM_RTS;
584 ioctl(line, TIOCMSET, &lflags);
585 duration = dot_clock * 1000000;
586 /* Only space within a symbol */
587 if (c[1] != '\0' || prosign)
591 duration = word_clock * CHAR_SPACE * 1000000;
597 sighandler(int signo)
600 ioctl(line, TIOCMSET, &olflags);
601 tcsetattr(line, TCSANOW, &otty);
603 signal(signo, SIG_DFL);
604 (void)kill(getpid(), signo);