mirror of
https://github.com/alrayyes/slstatus
synced 2023-11-14 15:56:27 +00:00
117 lines
3.2 KiB
Diff
117 lines
3.2 KiB
Diff
From: Đoàn Trần Công Danh <congdanhqx@gmail.com>
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There's a non-posix assignment inside config.mk,
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but it's supported with both gmake and bmake.
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var != shell command
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---
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components/volume.c | 59 +++++++++++++++++++++++++++++++++++++++++++++
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config.def.h | 1 +
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config.mk | 3 ++-
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3 files changed, 62 insertions(+), 1 deletion(-)
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diff --git a/components/volume.c b/components/volume.c
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index 61cec90..eeb3975 100644
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--- a/components/volume.c
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+++ b/components/volume.c
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@@ -1,5 +1,6 @@
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/* See LICENSE file for copyright and license details. */
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#include <fcntl.h>
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+#include <limits.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/ioctl.h>
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@@ -72,6 +73,64 @@
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return bprintf("%d", m ? 0 : v * 100 / 255);
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}
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+#elif defined(__linux__)
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+#include <alsa/asoundlib.h>
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+#include <alsa/control.h>
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+
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+#define SOUND_CARD "default"
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+#define MIXER_IDX 0
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+
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+const char*
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+vol_perc(const char *mixer)
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+{
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+ snd_mixer_t* handle;
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+ snd_mixer_elem_t* elem;
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+ snd_mixer_selem_id_t* sid;
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+ snd_mixer_selem_channel_id_t c;
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+
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+ int emute, muted = 0;
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+ long minv, maxv, elemv, vol = LONG_MIN;
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+ const char *result = NULL;
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+
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+ snd_mixer_selem_id_alloca(&sid);
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+
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+ //sets simple-mixer index and name
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+ snd_mixer_selem_id_set_index(sid, MIXER_IDX);
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+ snd_mixer_selem_id_set_name(sid, mixer);
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+
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+ if ((snd_mixer_open(&handle, 0)) < 0)
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+ goto out;
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+ if (snd_mixer_attach(handle, SOUND_CARD) < 0 ||
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+ snd_mixer_selem_register(handle, NULL, NULL) < 0 ||
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+ snd_mixer_load(handle) < 0 ||
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+ !(elem = snd_mixer_find_selem(handle, sid)))
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+ goto cleanup;
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+
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+ snd_mixer_selem_get_playback_volume_range(elem, &minv, &maxv);
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+
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+ if(minv == maxv)
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+ goto cleanup;
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+
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+ for (c = 0; c <= SND_MIXER_SCHN_LAST; ++c)
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+ if (snd_mixer_selem_has_playback_channel(elem, c)) {
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+ if (!snd_mixer_selem_get_playback_volume(elem, c, &elemv)
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+ && elemv > vol)
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+ vol = elemv;
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+ if (!muted
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+ && !snd_mixer_selem_get_playback_switch(elem, c, &emute))
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+ muted = !emute;
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+ }
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+ if (minv > vol || maxv < vol)
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+ goto cleanup;
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+
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+ result = bprintf("%d%% [%s]",
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+ (200 * (vol - minv) + maxv - minv) / (maxv - minv) / 2,
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+ muted ? "off" : "on");
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+cleanup:
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+ snd_mixer_close(handle);
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+out:
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+ return result;
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+}
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#else
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#include <sys/soundcard.h>
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diff --git a/config.def.h b/config.def.h
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index e06be66..40f0a28 100644
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--- a/config.def.h
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+++ b/config.def.h
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@@ -58,6 +58,7 @@ static const char unknown_str[] = "n/a";
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* uptime system uptime NULL
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* username username of current user NULL
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* vol_perc OSS/ALSA volume in percent mixer file (/dev/mixer)
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+ * mixer name on Linux (Master)
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* wifi_perc WiFi signal in percent interface name (wlan0)
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* wifi_essid WiFi ESSID interface name (wlan0)
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*/
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diff --git a/config.mk b/config.mk
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index 3b32b7c..6903fe1 100644
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--- a/config.mk
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+++ b/config.mk
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@@ -14,7 +14,8 @@ X11LIB = /usr/X11R6/lib
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CPPFLAGS = -I$(X11INC) -D_DEFAULT_SOURCE
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CFLAGS = -std=c99 -pedantic -Wall -Wextra -Os
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LDFLAGS = -L$(X11LIB) -s
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-LDLIBS = -lX11
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+ALSALIBS != [ Linux = `uname -s` ] && printf "%s" "-lasound"
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+LDLIBS = -lX11 $(ALSALIBS)
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# compiler and linker
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CC = cc
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--
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2.21.0
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