Contents of /tags/mkinitrd-6_3_4/busybox/miscutils/beep.c
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Thu Dec 16 01:27:43 2010 UTC (13 years, 9 months ago) by niro
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File size: 2716 byte(s)
Thu Dec 16 01:27:43 2010 UTC (13 years, 9 months ago) by niro
File MIME type: text/plain
File size: 2716 byte(s)
tagged 'mkinitrd-6_3_4'
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 | */ |