Commit 24f2167c05001ccb990532f6ba47b04c66b14538
Parent: d5f3ad7666c6bcb1db84d651bbcf7429ec798677
Author: mcol <mcol@posteo.net>
Date: 2020-01-10 22:07:27 +0000
Committer: mcol <mcol@posteo.net>
Committed: 2020-01-10 22:07:27 +0000

add alsa volume level Notify plugin

amixer/amixer.py Added

@@ -0,0 +1,67 @@
+"""
+Qtile plugin to control an ALSA device volume level.
+
+Example usage:
+
+    import qtools.amixer
+    vol = qtools.amixer.Volume()
+    keys.extend([EzKey(k, v) for k, v in {
+        '<XF86AudioMute>':        vol.lazy_mute,
+        '<XF86AudioRaiseVolume>': vol.lazy_increase,
+        '<XF86AudioLowerVolume>': vol.lazy_decrease,
+    }.items()])
+
+"""
+
+
+import subprocess
+
+from libqtile.log_utils import logger
+from qtools import Notifier
+
+
+class Volume(Notifier):
+    defaults = [
+        ('mixer', 'Master', 'ALSA mixer to control.'),
+        ('interval', 5, 'Percentage interval to change volume by.'),
+    ]
+    def __init__(self, **config):
+        Notifier.__init__(self, **config)
+        self.add_defaults(Volume.defaults)
+
+    def increase(self, qtile=None):
+        volume = self._run(f'{self.interval}%+')
+        self.show(self.interval * round(volume/self.interval))
+
+    def decrease(self, qtile=None):
+        volume = self._run(f'{self.interval}%-')
+        self.show(self.interval * round(volume/self.interval))
+
+    def toggle(self, qtile=None):
+        volume = self._run('toggle')
+        self.show(self.interval * round(volume/self.interval))
+
+    def mute(self, qtile=None):
+        self._run('mute')
+        self.show('Muted')
+
+    def unmute(self, qtile=None):
+        volume = self._run('unmute')
+        self.show(volume)
+
+    def _run(self, setting):
+        try:
+            output = subprocess.run(
+                ['amixer', 'set', self.mixer, setting],
+                stdout=subprocess.PIPE,
+            )
+            stdout = output.stdout.splitlines()
+        except subprocess.CalledProcessError as err:
+            logger.error(err.output.decode())
+            return
+
+        if len(stdout) == 5:
+            volume = int(stdout[4].decode().split()[3][1:-2])
+        elif len(stdout) == 6:
+            volume = int(stdout[5].decode().split()[4][1:-2])
+        return volume

amixer/__init__.py Added

@@ -0,0 +1 @@
+from .amixer import Volume