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authorDenys Vlasenko2009-08-22 18:00:39 +0200
committerDenys Vlasenko2009-08-22 18:00:39 +0200
commit0da1c0a73298087def5f42be61913b79fd2d9193 (patch)
tree384d36e5d927853f10b25dc5dbdec965549e4f55 /miscutils
parentdc3d8939d464e3de2bd47b6936f06d07ea58c75e (diff)
downloadbusybox-0da1c0a73298087def5f42be61913b79fd2d9193.zip
busybox-0da1c0a73298087def5f42be61913b79fd2d9193.tar.gz
beep: optimize
function old new delta beep_main 394 276 -118 Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'miscutils')
-rw-r--r--miscutils/Config.in2
-rw-r--r--miscutils/beep.c122
2 files changed, 56 insertions, 68 deletions
diff --git a/miscutils/Config.in b/miscutils/Config.in
index 4e19bd8..9a81ecc 100644
--- a/miscutils/Config.in
+++ b/miscutils/Config.in
@@ -33,7 +33,7 @@ config FEATURE_BEEP_FREQ
help
Frequency for default beep.
-config FEATURE_BEEP_LENGTH
+config FEATURE_BEEP_LENGTH_MS
int "default length"
range 0 2147483647
default 30
diff --git a/miscutils/beep.c b/miscutils/beep.c
index 79e7547..f3266dc 100644
--- a/miscutils/beep.c
+++ b/miscutils/beep.c
@@ -11,92 +11,80 @@
#include <linux/kd.h>
#ifndef CLOCK_TICK_RATE
-#define CLOCK_TICK_RATE 1193180
+# 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 */
#ifndef CONFIG_FEATURE_BEEP_FREQ
# define FREQ (4000)
#else
# define FREQ (CONFIG_FEATURE_BEEP_FREQ)
#endif
-#ifndef CONFIG_FEATURE_BEEP_LENGTH
+#ifndef CONFIG_FEATURE_BEEP_LENGTH_MS
# define LENGTH (30)
#else
-# define LENGTH (CONFIG_FEATURE_BEEP_LENGTH)
+# define LENGTH (CONFIG_FEATURE_BEEP_LENGTH_MS)
#endif
#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 beep_main(int argc, 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;
+ unsigned length, delay, rep;
+ unsigned tickrate_div_freq;
+ int c;
- 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:
+ 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);
- ioctl_arg = (int)(CLOCK_TICK_RATE/freq);
- xioctl(speaker, KIOCSOUND, (void*)ioctl_arg);
+ xioctl(speaker, KIOCSOUND, (void*)(long)tickrate_div_freq);
usleep(1000 * length);
- ioctl(speaker, KIOCSOUND, 0);
- if (rep--)
+ ioctl(speaker, KIOCSOUND, (void*)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;
@@ -117,11 +105,11 @@ g=$((392*3))
-n -f$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 -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 \
*/