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simplified and improved vol_perc()

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Aaron Marcher 2017-04-20 22:30:04 +02:00
parent c288663ebd
commit d144c8de3d
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GPG key ID: 74B048E5C2474F9A
1 changed files with 12 additions and 6 deletions
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slstatus.c
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@ -667,17 +667,23 @@ vol_perc(const char *card)
int v, afd, devmask; int v, afd, devmask;
char *vnames[] = SOUND_DEVICE_NAMES; char *vnames[] = SOUND_DEVICE_NAMES;
afd = open(card, O_RDONLY); afd = open(card, O_RDONLY | O_NONBLOCK);
if (afd < 0) { if (afd == -1) {
warn("Cannot open %s", card); warn("Cannot open %s", card);
return smprintf(UNKNOWN_STR); return smprintf(UNKNOWN_STR);
} }
ioctl(afd, MIXER_READ(SOUND_MIXER_DEVMASK), &devmask); if (ioctl(afd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1) {
warn("Cannot get volume for %s", card);
close(afd);
return smprintf("%s", UNKNOWN_STR);
}
for (i = 0; i < (sizeof(vnames) / sizeof((vnames[0]))); i++) { for (i = 0; i < (sizeof(vnames) / sizeof((vnames[0]))); i++) {
if (devmask & (1 << i)) { if (devmask & (1 << i) && !strcmp("vol", vnames[i])) {
if (!strcmp("vol", vnames[i])) { if (ioctl(afd, MIXER_READ(i), &v) == -1) {
ioctl(afd, MIXER_READ(i), &v); warn("vol_perc: ioctl");
close(afd);
return smprintf("%s", UNKNOWN_STR);
} }
} }
} }