commit e7e3765e0a51f677db1df6bb6ffb11a02a2b955c
parent 98607302965b349b4ef377b31627dad69e3a1fe9
Author: sin <sin@2f30.org>
Date: Thu, 3 Nov 2016 15:42:07 +0000
Implement mix plugin for Linux using ALSA sound lib
Diffstat:
| M | Makefile | | | 6 | +++++- |
| M | mix.c | | | 47 | +++++++++++++++++++++++++++++++++++++++++++++++ |
2 files changed, 52 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
@@ -11,14 +11,18 @@ include config.mk
CPPFLAGS_OpenBSD = -I/usr/X11R6/include -I/usr/local/include
LDFLAGS_OpenBSD = -L/usr/X11R6/lib -L/usr/local/lib
+LDLIBS_OpenBSD = -lX11
CPPFLAGS_Linux =\
+ -I/usr/local/include\
-DPATH_BAT_CAP=\"/sys/class/power_supply/BAT0/capacity\"\
-DPATH_AC_ONLINE=\"/sys/class/power_supply/AC/online\"\
-DPATH_TEMP=\"/sys/class/hwmon/hwmon0/temp1_input\"\
-DPATH_CPU_FREQ=\"/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq\"
+LDFLAGS_Linux = -L/usr/local/lib
+LDLIBS_Linux = -lX11 -lasound
CPPFLAGS = $(CPPFLAGS_$(UNAME))
LDFLAGS = $(LDFLAGS_$(UNAME))
-LDLIBS = -lX11
+LDLIBS = $(LDLIBS_$(UNAME))
# To remove extra compile time dependencies for unwanted plugins
# comment out the following sections. The stub implementations
diff --git a/mix.c b/mix.c
@@ -63,4 +63,51 @@ out:
close(fd);
return ret;
}
+#elif __linux__
+#include <alsa/asoundlib.h>
+
+int
+mixread(void *arg, char *buf, size_t len)
+{
+ snd_mixer_t *mixerhdl;
+ snd_mixer_elem_t *elem;
+ snd_mixer_selem_id_t *sid;
+ long min, max;
+ long vol;
+
+ if (snd_mixer_open(&mixerhdl, 0) < 0) {
+ warnx("snd_mixer_open: failed");
+ return -1;
+ }
+ if (snd_mixer_attach(mixerhdl, "default") < 0) {
+ warnx("snd_mixer_attach: failed");
+ goto err0;
+ }
+ if (snd_mixer_selem_register(mixerhdl, NULL, NULL) < 0) {
+ warnx("snd_mixer_selem_register: failed");
+ goto err0;
+ }
+ if (snd_mixer_load(mixerhdl) < 0) {
+ warnx("snd_mixer_load: failed");
+ goto err0;
+ }
+ snd_mixer_selem_id_alloca(&sid);
+ snd_mixer_selem_id_set_name(sid, "Master");
+ elem = snd_mixer_find_selem(mixerhdl, sid);
+ if (elem == NULL) {
+ warnx("snd_mixer_find_selem: failed");
+ goto err0;
+ }
+ snd_mixer_selem_get_playback_volume_range(elem, &min, &max);
+ snd_mixer_selem_get_playback_volume(elem, 0, &vol);
+ snd_mixer_close(mixerhdl);
+ if (max == 0)
+ snprintf(buf, len, "0%%");
+ else
+ snprintf(buf, len, "%ld%%", vol * 100 / max);
+ return 0;
+err0:
+ snd_mixer_close(mixerhdl);
+ return -1;
+}
#endif
