source: branches/3.2/mindi-busybox/miscutils/beep.c @ 3232

Last change on this file since 3232 was 3232, checked in by bruno, 5 years ago
  • Update mindi-busybox to 1.21.1
  • Property svn:eol-style set to native
File size: 2.9 KB
Line 
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 GPLv2 or later, see file LICENSE in this source tree.
8 *
9 */
10
11//usage:#define beep_trivial_usage
12//usage:       "-f FREQ -l LEN -d DELAY -r COUNT -n"
13//usage:#define beep_full_usage "\n\n"
14//usage:       "    -f  Frequency in Hz"
15//usage:     "\n    -l  Length in ms"
16//usage:     "\n    -d  Delay in ms"
17//usage:     "\n    -r  Repetitions"
18//usage:     "\n    -n  Start new tone"
19
20#include "libbb.h"
21
22#include <linux/kd.h>
23#ifndef CLOCK_TICK_RATE
24# define CLOCK_TICK_RATE 1193180
25#endif
26
27/* defaults */
28#ifndef CONFIG_FEATURE_BEEP_FREQ
29# define FREQ (4000)
30#else
31# define FREQ (CONFIG_FEATURE_BEEP_FREQ)
32#endif
33#ifndef CONFIG_FEATURE_BEEP_LENGTH_MS
34# define LENGTH (30)
35#else
36# define LENGTH (CONFIG_FEATURE_BEEP_LENGTH_MS)
37#endif
38#define DELAY (0)
39#define REPETITIONS (1)
40
41int beep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
42int beep_main(int argc, char **argv)
43{
44    int speaker = get_console_fd_or_die();
45    unsigned tickrate_div_freq = tickrate_div_freq; /* for compiler */
46    unsigned length = length;
47    unsigned delay = delay;
48    unsigned rep = rep;
49    int c;
50
51    c = 'n';
52    while (c != -1) {
53        if (c == 'n') {
54            tickrate_div_freq = CLOCK_TICK_RATE / FREQ;
55            length = LENGTH;
56            delay = DELAY;
57            rep = REPETITIONS;
58        }
59        c = getopt(argc, argv, "f:l:d:r:n");
60/* TODO: -s, -c:
61 * pipe stdin to stdout, but also beep after each line (-s) or char (-c)
62 */
63        switch (c) {
64        case 'f':
65/* TODO: what "-f 0" should do? */
66            tickrate_div_freq = (unsigned)CLOCK_TICK_RATE / xatou(optarg);
67            continue;
68        case 'l':
69            length = xatou(optarg);
70            continue;
71        case 'd':
72/* TODO:
73 * -d N, -D N
74 * specify a delay of N milliseconds between repetitions.
75 * -d specifies that this delay should only occur between beeps,
76 * that is, it should not occur after the last repetition.
77 * -D indicates that the delay should occur after every repetition
78 */
79            delay = xatou(optarg);
80            continue;
81        case 'r':
82            rep = xatou(optarg);
83            continue;
84        case 'n':
85        case -1:
86            break;
87        default:
88            bb_show_usage();
89        }
90        while (rep) {
91//bb_info_msg("rep[%d] freq=%d, length=%d, delay=%d", rep, freq, length, delay);
92            xioctl(speaker, KIOCSOUND, (void*)(uintptr_t)tickrate_div_freq);
93            usleep(1000 * length);
94            ioctl(speaker, KIOCSOUND, (void*)0);
95            if (--rep)
96                usleep(1000 * delay);
97        }
98    }
99
100    if (ENABLE_FEATURE_CLEAN_UP)
101        close(speaker);
102    return EXIT_SUCCESS;
103}
104/*
105 * so, e.g. Beethoven's 9th symphony "Ode an die Freude" would be
106 * something like:
107a=$((220*3))
108b=$((247*3))
109c=$((262*3))
110d=$((294*3))
111e=$((329*3))
112f=$((349*3))
113g=$((392*3))
114#./beep -f$d -l200 -r2 -n -f$e -l100 -d 10 -n -f$c -l400 -f$g -l200
115./beep -f$e -l200 -r2 \
116        -n -d 100 -f$f -l200 \
117        -n -f$g -l200 -r2 \
118        -n -f$f -l200 \
119        -n -f$e -l200 \
120        -n -f$d -l200 \
121        -n -f$c -l200 -r2 \
122        -n -f$d -l200 \
123        -n -f$e -l200 \
124        -n -f$e -l400 \
125        -n -f$d -l100 \
126        -n -f$d -l200 \
127*/
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