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 31int beep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; 32int 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: 97a=$((220*3)) 98b=$((247*3)) 99c=$((262*3)) 100d=$((294*3)) 101e=$((329*3)) 102f=$((349*3)) 103g=$((392*3)) 104#./beep -f$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*/ 118