add simple beep applet

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

5 files changed, 137 insertions, 0 deletions

diff --git a/include/applets.h b/include/applets.h
index d4fbbc95c..9b6b54e63 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -80,6 +80,7 @@ IF_ASH(APPLET(ash, _BB_DIR_BIN, _BB_SUID_DROP))
 IF_AWK(APPLET_NOEXEC(awk, awk, _BB_DIR_USR_BIN, _BB_SUID_DROP, awk))
 IF_BASENAME(APPLET_NOFORK(basename, basename, _BB_DIR_USR_BIN, _BB_SUID_DROP, basename))
 IF_BBCONFIG(APPLET(bbconfig, _BB_DIR_BIN, _BB_SUID_DROP))
+IF_BEEP(APPLET(beep, _BB_DIR_USR_BIN, _BB_SUID_DROP))
 //IF_BBSH(APPLET(bbsh, _BB_DIR_BIN, _BB_SUID_DROP))
 IF_BLKID(APPLET(blkid, _BB_DIR_SBIN, _BB_SUID_DROP))
 IF_BRCTL(APPLET(brctl, _BB_DIR_USR_SBIN, _BB_SUID_DROP))
diff --git a/include/usage.h b/include/usage.h
index 8a5c7a088..227ed8001 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -145,6 +145,16 @@
        "$ basename /foo/bar.txt .txt\n" \
        "bar"
 
+#define beep_trivial_usage \
+       "-f freq -l length -d delay -r repetitions -n"
+#define beep_full_usage "\n\n" \
+        "Options:\n" \
+     "\n        -f      Frequency in Hz" \
+     "\n        -l      Length in ms" \
+     "\n        -d      Delay in ms" \
+     "\n        -r      Repetitions" \
+     "\n        -n      Start new tone" \
+
 #define fbsplash_trivial_usage \
        "-s IMGFILE [-c] [-d DEV] [-i INIFILE] [-f CMD]"
 #define fbsplash_full_usage "\n\n" \
diff --git a/miscutils/Config.in b/miscutils/Config.in
index 689044794..7209d2944 100644
--- a/miscutils/Config.in
+++ b/miscutils/Config.in
@@ -19,6 +19,12 @@ config BBCONFIG
           The bbconfig applet will print the config file with which
           busybox was built.
 
+config BEEP
+        bool "beep"
+        default n
+        help
+          The beep applets beeps in a given freq/Hz.
+
 config CHAT
         bool "chat"
         default n
diff --git a/miscutils/Kbuild b/miscutils/Kbuild
index e378a099f..d88cb39ac 100644
--- a/miscutils/Kbuild
+++ b/miscutils/Kbuild
@@ -7,6 +7,7 @@
 lib-y:=
 lib-$(CONFIG_ADJTIMEX)    += adjtimex.o
 lib-$(CONFIG_BBCONFIG)    += bbconfig.o
+lib-$(CONFIG_BEEP)        += beep.o
 lib-$(CONFIG_CHAT)        += chat.o
 lib-$(CONFIG_CHRT)        += chrt.o
 lib-$(CONFIG_CROND)       += crond.o
diff --git a/miscutils/beep.c b/miscutils/beep.c
new file mode 100644
index 000000000..d5c353197
--- /dev/null
+++ b/miscutils/beep.c
@@ -0,0 +1,119 @@
+/* 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
+
+#define OPT_f (1<<0)
+#define OPT_l (1<<1)
+#define OPT_d (1<<2)
+#define OPT_r (1<<3)
+/* defaults */
+#define FREQ (4440)
+#define LENGTH (50)
+#define DELAY (0)
+#define REPETITIONS (1)
+
+#define GET_ARG do { if (!*++opt) opt = *++argv; if (opt == NULL) bb_show_usage();} while (0)
+#define NEW_BEEP() { \
+        freq = FREQ; \
+        length = LENGTH; \
+        delay = DELAY; \
+        rep = REPETITIONS; \
+        }
+
+int beep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int beep_main(int argc UNUSED_PARAM, char **argv)
+{
+        int speaker = get_console_fd_or_die();
+        unsigned freq, length, delay, rep;
+        unsigned long ioctl_arg;
+        char *opt = NULL;
+        bool do_parse = true;
+
+        NEW_BEEP()
+        while (*argv && *++argv) {
+                opt = *argv;
+
+                while (*opt == '-')
+                        ++opt;
+                if (do_parse)
+                        switch (*opt) {
+                        case 'f':
+                                GET_ARG;
+                                freq = xatoul(opt);
+                                continue;
+                        case 'l':
+                                GET_ARG;
+                                length = xatoul(opt);
+                                continue;
+                        case 'd':
+                                GET_ARG;
+                                delay = xatoul(opt);
+                                continue;
+                        case 'r':
+                                GET_ARG;
+                                rep = xatoul(opt);
+                                continue;
+                        case 'n':
+                                break;
+                        default:
+                                bb_show_usage();
+                                break;
+                        }
+ again:
+                while (rep) {
+//bb_info_msg("rep[%d] freq=%d, length=%d, delay=%d", rep, freq, length, delay);
+                        ioctl_arg = (int)(CLOCK_TICK_RATE/freq);
+                        xioctl(speaker, KIOCSOUND, (void*)ioctl_arg);
+                        usleep(1000 * length);
+                        ioctl(speaker, KIOCSOUND, 0);
+                        if (rep--)
+                                usleep(delay);
+                }
+                if (opt && *opt == 'n')
+                                NEW_BEEP()
+                if (!do_parse && *argv == NULL)
+                        goto out;
+        }
+        do_parse = false;
+        goto again;
+ out:
+        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 \
+*/