busybox/miscutils/beep.c

/* vi: set sw=4 ts=4: */
/*
 * beep implementation for busybox
 *
 * Copyright (C) 2009 Bernhard Reutner-Fischer
 *
 * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
 *
 */
#include "libbb.h"

#include <linux/kd.h>
#ifndef CLOCK_TICK_RATE
# define CLOCK_TICK_RATE 1193180
#endif

/* defaults */
#ifndef CONFIG_FEATURE_BEEP_FREQ
# define FREQ (4000)
#else
# define FREQ (CONFIG_FEATURE_BEEP_FREQ)
#endif
#ifndef CONFIG_FEATURE_BEEP_LENGTH_MS
# define LENGTH (30)
#else
# define LENGTH (CONFIG_FEATURE_BEEP_LENGTH_MS)
#endif
#define DELAY (0)
#define REPETITIONS (1)

int beep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int beep_main(int argc, char **argv)
{
	int speaker = get_console_fd_or_die();
	unsigned tickrate_div_freq = tickrate_div_freq; /* for compiler */
	unsigned length = length;
	unsigned delay = delay;
	unsigned rep = rep;
	int c;

	c = 'n';
	while (c != -1) {
		if (c == 'n') {
			tickrate_div_freq = CLOCK_TICK_RATE / FREQ;
			length = LENGTH;
			delay = DELAY;
			rep = REPETITIONS;
		}
		c = getopt(argc, argv, "f:l:d:r:n");
/* TODO: -s, -c:
 * pipe stdin to stdout, but also beep after each line (-s) or char (-c)
 */
		switch (c) {
		case 'f':
/* TODO: what "-f 0" should do? */
			tickrate_div_freq = (unsigned)CLOCK_TICK_RATE / xatou(optarg);
			continue;
		case 'l':
			length = xatou(optarg);
			continue;
		case 'd':
/* TODO:
 * -d N, -D N
 * specify a delay of N milliseconds between repetitions.
 * -d specifies that this delay should only occur between beeps,
 * that is, it should not occur after the last repetition.
 * -D indicates that the delay should occur after every repetition
 */
			delay = xatou(optarg);
			continue;
		case 'r':
			rep = xatou(optarg);
			continue;
		case 'n':
		case -1:
			break;
		default:
			bb_show_usage();
		}
		while (rep) {
//bb_info_msg("rep[%d] freq=%d, length=%d, delay=%d", rep, freq, length, delay);
			xioctl(speaker, KIOCSOUND, (void*)(uintptr_t)tickrate_div_freq);
			usleep(1000 * length);
			ioctl(speaker, KIOCSOUND, (void*)0);
			if (--rep)
				usleep(1000 * delay);
		}
	}

	if (ENABLE_FEATURE_CLEAN_UP)
		close(speaker);
	return EXIT_SUCCESS;
}
/*
 * so, e.g. Beethoven's 9th symphony "Ode an die Freude" would be
 * something like:
a=$((220*3))
b=$((247*3))
c=$((262*3))
d=$((294*3))
e=$((329*3))
f=$((349*3))
g=$((392*3))
#./beep -f$d -l200 -r2 -n -f$e -l100 -d 10 -n -f$c -l400 -f$g -l200
./beep -f$e -l200 -r2 \
        -n -d 100 -f$f -l200 \
        -n -f$g -l200 -r2 \
        -n -f$f -l200 \
        -n -f$e -l200 \
        -n -f$d -l200 \
        -n -f$c -l200 -r2 \
        -n -f$d -l200 \
        -n -f$e -l200 \
        -n -f$e -l400 \
        -n -f$d -l100 \
        -n -f$d -l200 \
*/
1	/* vi: set sw=4 ts=4: */
2	/*
3	* beep implementation for busybox
4	*
5	* Copyright (C) 2009 Bernhard Reutner-Fischer
6	*
7	* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
8	*
9	*/
10	#include "libbb.h"
11
12	#include <linux/kd.h>
13	#ifndef CLOCK_TICK_RATE
14	# define CLOCK_TICK_RATE 1193180
15	#endif
16
17	/* defaults */
18	#ifndef CONFIG_FEATURE_BEEP_FREQ
19	# define FREQ (4000)
20	#else
21	# define FREQ (CONFIG_FEATURE_BEEP_FREQ)
22	#endif
23	#ifndef CONFIG_FEATURE_BEEP_LENGTH_MS
24	# define LENGTH (30)
25	#else
26	# define LENGTH (CONFIG_FEATURE_BEEP_LENGTH_MS)
27	#endif
28	#define DELAY (0)
29	#define REPETITIONS (1)
30
31	int beep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
32	int beep_main(int argc, char **argv)
33	{
34	int speaker = get_console_fd_or_die();
35	unsigned tickrate_div_freq = tickrate_div_freq; /* for compiler */
36	unsigned length = length;
37	unsigned delay = delay;
38	unsigned rep = rep;
39	int c;
40
41	c = 'n';
42	while (c != -1) {
43	if (c == 'n') {
44	tickrate_div_freq = CLOCK_TICK_RATE / FREQ;
45	length = LENGTH;
46	delay = DELAY;
47	rep = REPETITIONS;
48	}
49	c = getopt(argc, argv, "f:l:d:r:n");
50	/* TODO: -s, -c:
51	* pipe stdin to stdout, but also beep after each line (-s) or char (-c)
52	*/
53	switch (c) {
54	case 'f':
55	/* TODO: what "-f 0" should do? */
56	tickrate_div_freq = (unsigned)CLOCK_TICK_RATE / xatou(optarg);
57	continue;
58	case 'l':
59	length = xatou(optarg);
60	continue;
61	case 'd':
62	/* TODO:
63	* -d N, -D N
64	* specify a delay of N milliseconds between repetitions.
65	* -d specifies that this delay should only occur between beeps,
66	* that is, it should not occur after the last repetition.
67	* -D indicates that the delay should occur after every repetition
68	*/
69	delay = xatou(optarg);
70	continue;
71	case 'r':
72	rep = xatou(optarg);
73	continue;
74	case 'n':
75	case -1:
76	break;
77	default:
78	bb_show_usage();
79	}
80	while (rep) {
81	//bb_info_msg("rep[%d] freq=%d, length=%d, delay=%d", rep, freq, length, delay);
82	xioctl(speaker, KIOCSOUND, (void*)(uintptr_t)tickrate_div_freq);
83	usleep(1000 * length);
84	ioctl(speaker, KIOCSOUND, (void*)0);
85	if (--rep)
86	usleep(1000 * delay);
87	}
88	}
89
90	if (ENABLE_FEATURE_CLEAN_UP)
91	close(speaker);
92	return EXIT_SUCCESS;
93	}
94	/*
95	* so, e.g. Beethoven's 9th symphony "Ode an die Freude" would be
96	* something like:
97	a=$((220*3))
98	b=$((247*3))
99	c=$((262*3))
100	d=$((294*3))
101	e=$((329*3))
102	f=$((349*3))
103	g=$((392*3))
104	#./beep -f$d -l200 -r2 -n -f$e -l100 -d 10 -n -f$c -l400 -f$g -l200
105	./beep -f$e -l200 -r2 \
106	-n -d 100 -f$f -l200 \
107	-n -f$g -l200 -r2 \
108	-n -f$f -l200 \
109	-n -f$e -l200 \
110	-n -f$d -l200 \
111	-n -f$c -l200 -r2 \
112	-n -f$d -l200 \
113	-n -f$e -l200 \
114	-n -f$e -l400 \
115	-n -f$d -l100 \
116	-n -f$d -l200 \
117	*/