64 lines
1.4 KiB
C
64 lines
1.4 KiB
C
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#include "oss.h"
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#include "../util.h"
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/soundcard.h>
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#include <stdio.h>
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typedef struct {
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int fd;
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int pcm;
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int vol;
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int mute;
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} mixer_data;
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static mixer_data main_mixer;
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#define ioctl_checked(fd, request, arg) _ioctl_checked(fd, request, #request, arg)
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static void _ioctl_checked(int fd, unsigned long request, const char *rq_name, void *arg) {
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if (ioctl(fd, request, arg) < 0) {
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qtb_log("ioctl request %s failed", rq_name);
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qtb_die();
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}
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}
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static void open_mixer(const char *path, mixer_data *mixer) {
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mixer->fd = open(path, O_RDONLY);
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if (mixer->fd < 0) {
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qtb_log("could not open mixer '%s'", path);
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qtb_die();
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}
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}
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static void read_mixer(mixer_data *mixer) {
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ioctl_checked(mixer->fd, SOUND_MIXER_READ_PCM, &mixer->pcm);
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mixer->pcm >>= 8;
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ioctl_checked(mixer->fd, SOUND_MIXER_READ_VOLUME, &mixer->vol);
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mixer->vol >>= 8;
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mixer->mute = !(mixer->vol * mixer->pcm);
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}
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void oss_module_init() {
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open_mixer("/dev/mixer", &main_mixer);
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}
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static const char *get_volume_icon(int volume, int mute) {
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if (mute) {
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return "ﱝ";
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} else if (volume > 50) {
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return "墳";
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} else if (volume > 0) {
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return "奔";
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}
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return "奄";
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}
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char *oss_module_poll() {
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read_mixer(&main_mixer);
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const char *icon = get_volume_icon(main_mixer.vol, main_mixer.mute);
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char *buff = qtb_malloc(32);
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sprintf(buff, "%s%3d%%",icon, main_mixer.vol);
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return buff;
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}
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