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- Check device masks and bypass printing headers if capable device does

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not exist.  /etc/rc.d/mixer tried to restore non-existent recording
source because /var/var/db/mixer*-state contains '=rec' for example.
- Remove hardcoded mixer2 and mixer3 and do the right thing.
- Replace getopt(3) with hand-rolled option parser.  It was not able
to handle 'mixer -rec mic' although it is a valid command.
- Make '-s' and '-S' mutualy exclusive as mixer(8) says.
- Do not re-read recording source unless it has been modified.
This commit is contained in:
Jung-uk Kim 2008-03-15 01:09:47 +00:00
parent 3a6aaff135
commit 35ebab0a33
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=177195
1 changed files with 72 additions and 47 deletions
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119
usr.sbin/mixer/mixer.c
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@ -16,6 +16,8 @@ __FBSDID("$FreeBSD$");
#include <err.h>
#include <fcntl.h>
#include <libgen.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
@ -26,7 +28,7 @@ const char *names[SOUND_MIXER_NRDEVICES] = SOUND_DEVICE_NAMES;
void usage(int devmask, int recmask);
int res_name(const char *name, int mask);
void print_recsrc(int recsrc, int shortflag);
void print_recsrc(int recsrc, int recmask, int shortflag);
void
usage(int devmask, int recmask)
@ -36,22 +38,26 @@ usage(int devmask, int recmask)
printf("usage: mixer [-f device] [-s | -S] [dev [+|-][voll[:[+|-]volr]] ...\n"
" mixer [-f device] [-s | -S] recsrc ...\n"
" mixer [-f device] [-s | -S] {^|+|-|=}rec rdev ... \n");
printf(" devices: ");
for (i = 0, n = 0; i < SOUND_MIXER_NRDEVICES; i++)
if ((1 << i) & devmask) {
if (n)
printf(", ");
printf("%s", names[i]);
n = 1;
}
printf("\n rec devices: ");
for (i = 0, n = 0; i < SOUND_MIXER_NRDEVICES; i++)
if ((1 << i) & recmask) {
if (n)
printf(", ");
printf("%s", names[i]);
n = 1;
}
if (devmask != 0) {
printf(" devices: ");
for (i = 0, n = 0; i < SOUND_MIXER_NRDEVICES; i++)
if ((1 << i) & devmask) {
if (n)
printf(", ");
printf("%s", names[i]);
n = 1;
}
}
if (recmask != 0) {
printf("\n rec devices: ");
for (i = 0, n = 0; i < SOUND_MIXER_NRDEVICES; i++)
if ((1 << i) & recmask) {
if (n)
printf(", ");
printf("%s", names[i]);
n = 1;
}
}
printf("\n");
exit(1);
}
@ -69,10 +75,13 @@ res_name(const char *name, int mask)
}
void
print_recsrc(int recsrc, int shortflag)
print_recsrc(int recsrc, int recmask, int shortflag)
{
int i, n = 0;
if (recmask == 0)
return;
if (!shortflag)
printf("Recording source: ");
@ -95,39 +104,55 @@ print_recsrc(int recsrc, int shortflag)
int
main(int argc, char *argv[])
{
char mixer[PATH_MAX] = "/dev/mixer";
char *name, *eptr;
int foo, bar, baz, dev;
int devmask = 0, recmask = 0, recsrc = 0, orecsrc;
int dusage = 0, drecsrc = 0, shortflag = 0, Shortflag = 0;
int l = 0, r = 0, t = 0;
char lstr[5], rstr[5];
int n = 0, lrel = 0, rrel = 0;
int ch;
int n, lrel = 0, rrel = 0;
char ch;
char *name;
if ((name = strdup(basename(argv[0]))) == NULL)
err(1, "strdup()");
if (strncmp(name, "mixer", 5) == 0 && name[5] != '\0') {
n = strtol(name + 5, &eptr, 10) - 1;
if (n > 0 && *eptr == '\0')
snprintf(mixer, PATH_MAX - 1, "/dev/mixer%d", n);
}
free(name);
name = mixer;
name = "/dev/mixer";
if (!strcmp(argv[0], "mixer2"))
name = "/dev/mixer1";
else if (!strcmp(argv[0], "mixer3"))
name = "/dev/mixer2";
while ((ch = getopt(argc, argv, "f:sS")) != -1)
switch (ch) {
case 'f':
name = optarg;
break;
case 's':
shortflag = 1;
break;
case 'S':
Shortflag = 1;
break;
default:
n = 1;
for (;;) {
if (n >= argc || *argv[n] != '-')
break;
if (strlen(argv[n]) != 2) {
if (strcmp(argv[n] + 1, "rec") != 0)
dusage = 1;
break;
}
argc -= (optind - 1);
argv += (optind - 1);
ch = *(argv[n] + 1);
if (ch == 'f' && n < argc - 1) {
name = argv[n + 1];
n += 2;
} else if (ch == 's') {
shortflag = 1;
n++;
} else if (ch == 'S') {
Shortflag = 1;
n++;
} else {
dusage = 1;
break;
}
}
if (shortflag && Shortflag)
dusage = 1;
argc -= n - 1;
argv += n - 1;
if ((baz = open(name, O_RDWR)) < 0)
err(1, "%s", name);
@ -159,7 +184,7 @@ main(int argc, char *argv[])
}
if (ioctl(baz, SOUND_MIXER_READ_RECSRC, &recsrc) == -1)
err(1, "SOUND_MIXER_READ_RECSRC");
print_recsrc(recsrc, shortflag || Shortflag);
print_recsrc(recsrc, recmask, shortflag || Shortflag);
return(0);
}
@ -288,15 +313,15 @@ main(int argc, char *argv[])
/* Not reached */
}
if (orecsrc != recsrc)
if (orecsrc != recsrc) {
if (ioctl(baz, SOUND_MIXER_WRITE_RECSRC, &recsrc) == -1)
err(1, "SOUND_MIXER_WRITE_RECSRC");
if (drecsrc) {
if (ioctl(baz, SOUND_MIXER_READ_RECSRC, &recsrc) == -1)
err(1, "SOUND_MIXER_READ_RECSRC");
print_recsrc(recsrc, shortflag || Shortflag);
}
if (drecsrc)
print_recsrc(recsrc, recmask, shortflag || Shortflag);
close(baz);