X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/61e44e894890c1521a01148fbf969cbd4dbb4cae..7246dc4381c6c95454672a5c1aff65a02d6d3747:/components/volume.c diff --git a/components/volume.c b/components/volume.c new file mode 100644 index 0000000..f5aa18d --- /dev/null +++ b/components/volume.c @@ -0,0 +1,43 @@ +/* See LICENSE file for copyright and license details. */ +#include +#include +#include +#include +#include +#include +#include + +#include "../util.h" + +const char * +vol_perc(const char *card) +{ + unsigned int i; + int v, afd, devmask; + char *vnames[] = SOUND_DEVICE_NAMES; + + afd = open(card, O_RDONLY | O_NONBLOCK); + if (afd == -1) { + warn("Cannot open %s", card); + return NULL; + } + + if (ioctl(afd, SOUND_MIXER_READ_DEVMASK, &devmask) == -1) { + warn("Cannot get volume for %s", card); + close(afd); + return NULL; + } + for (i = 0; i < LEN(vnames); i++) { + if (devmask & (1 << i) && !strcmp("vol", vnames[i])) { + if (ioctl(afd, MIXER_READ(i), &v) == -1) { + warn("vol_perc: ioctl"); + close(afd); + return NULL; + } + } + } + + close(afd); + + return bprintf("%d", v & 0xff); +}