tvl-depot/configs/shared/.emacs.d/wpc/pulse-audio.el
William Carroll 5785a5d126 Support prelude/start-process
If you refer to the previous commit where I change shell-command usages to
start-process function calls, you'll see the rationale for why I prefer
start-process.

This commit introduces a more ergonomic API for start-process that fits most of
my current use-cases of it. This cleans up the code. I have introduced a bug in
the way that I'm tokenizing the COMMAND value. I've tracked that with a
TODO. For now it only affects the `xmodmap -e '<command-string>'` calls, which
isn't too disruptive.
2020-01-06 15:25:25 +00:00

79 lines
2.6 KiB
EmacsLisp

;;; pulse-audio.el --- Control audio with Elisp -*- lexical-binding: t -*-
;; Author: William Carroll <wpcarro@gmail.com>
;;; Commentary:
;; Because everything in my configuration is turning into Elisp these days.
;;; Code:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Dependencies
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(require 'prelude)
(require 'string)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Constants
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defconst pulse-audio/step-size 5
"The size by which to increase or decrease the volume.")
(defconst pulse-audio/install-kbds? t
"When t, install keybindings defined herein.")
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Library
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun pulse-audio/message (x)
"Output X to *Messages*."
(message (string/format "[pulse-audio.el] %s" x)))
(defun pulse-audio/toggle-mute ()
"Mute the default sink."
(interactive)
(prelude/start-process
:name "pulse-audio/toggle-mute"
:command "pactl set-sink-mute @DEFAULT_SINK@ toggle")
(pulse-audio/message "Mute toggled."))
(defun pulse-audio/toggle-microphone ()
"Mute the default sink."
(interactive)
(prelude/start-process
:name "pulse-audio/toggle-microphone"
:command "pactl set-source-mute @DEFAULT_SOURCE@ toggle")
(pulse-audio/message "Microphone toggled."))
(defun pulse-audio/decrease-volume ()
"Low the volume output of the default sink."
(interactive)
(prelude/start-process
:name "pulse-audio/decrease-volume"
:command (string/format "pactl set-sink-volume @DEFAULT_SINK@ -%s%%"
pulse-audio/step-size))
(pulse-audio/message "Volume decreased."))
(defun pulse-audio/increase-volume ()
"Raise the volume output of the default sink."
(interactive)
(prelude/start-process
:name "pulse-audio/increase-volume"
:command (string/format "pactl set-sink-volume @DEFAULT_SINK@ +%s%%"
pulse-audio/step-size))
(pulse-audio/message "Volume increased."))
(when pulse-audio/install-kbds?
(exwm-input-set-key
(kbd "<XF86AudioMute>") #'pulse-audio/toggle-mute)
(exwm-input-set-key
(kbd "<XF86AudioLowerVolume>") #'pulse-audio/decrease-volume)
(exwm-input-set-key
(kbd "<XF86AudioRaiseVolume>") #'pulse-audio/increase-volume)
(exwm-input-set-key
(kbd "<XF86AudioMicMute>") #'pulse-audio/toggle-microphone))
(provide 'pulse-audio)
;;; pulse-audio.el ends here