a66ee82a05
* gnu/services/sound.scm (pulseaudio-environment): New procedure. (pulseaudio-service-type): New variable. * doc/guix.texi (Sound Services): Document it.
125 lines
3.6 KiB
Scheme
125 lines
3.6 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2018, 2020 Oleg Pykhalov <go.wigust@gmail.com>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (gnu services sound)
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#:use-module (gnu services base)
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#:use-module (gnu services configuration)
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#:use-module (gnu services shepherd)
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#:use-module (gnu services)
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#:use-module (gnu system pam)
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#:use-module (gnu system shadow)
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#:use-module (guix gexp)
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#:use-module (guix packages)
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#:use-module (guix records)
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#:use-module (guix store)
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#:use-module (gnu packages audio)
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#:use-module (gnu packages linux)
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#:use-module (gnu packages pulseaudio)
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#:use-module (ice-9 match)
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#:export (alsa-configuration
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alsa-service-type
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pulseaudio-service-type))
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;;; Commentary:
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;;;
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;;; Sound services.
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;;;
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;;; Code:
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;;;
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;;; ALSA
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;;;
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(define-record-type* <alsa-configuration>
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alsa-configuration make-alsa-configuration alsa-configuration?
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(alsa-plugins alsa-configuration-alsa-plugins ;<package>
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(default alsa-plugins))
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(pulseaudio? alsa-configuration-pulseaudio? ;boolean
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(default #t))
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(extra-options alsa-configuration-extra-options ;string
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(default "")))
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(define alsa-config-file
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;; Return the ALSA configuration file.
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(match-lambda
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(($ <alsa-configuration> alsa-plugins pulseaudio? extra-options)
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(apply mixed-text-file "asound.conf"
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`("# Generated by 'alsa-service'.\n\n"
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,@(if pulseaudio?
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`("# Use PulseAudio by default
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pcm_type.pulse {
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lib \"" ,#~(string-append #$alsa-plugins:pulseaudio
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"/lib/alsa-lib/libasound_module_pcm_pulse.so") "\"
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}
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ctl_type.pulse {
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lib \"" ,#~(string-append #$alsa-plugins:pulseaudio
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"/lib/alsa-lib/libasound_module_ctl_pulse.so") "\"
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}
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pcm.!default {
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type pulse
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fallback \"sysdefault\"
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hint {
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show on
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description \"Default ALSA Output (currently PulseAudio Sound Server)\"
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}
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}
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ctl.!default {
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type pulse
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fallback \"sysdefault\"
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}\n\n")
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'())
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,extra-options)))))
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(define (alsa-etc-service config)
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(list `("asound.conf" ,(alsa-config-file config))))
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(define alsa-service-type
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(service-type
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(name 'alsa)
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(extensions
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(list (service-extension etc-service-type alsa-etc-service)))
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(default-value (alsa-configuration))
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(description "Configure low-level Linux sound support, ALSA.")))
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;;;
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;;; PulseAudio
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;;;
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(define (pulseaudio-environment config)
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;; Define this variable in the global environment such that
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;; pulseaudio swh-plugins works.
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`(("LADSPA_PATH"
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. ,(file-append swh-plugins "/lib/ladspa"))))
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(define pulseaudio-service-type
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(service-type
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(name 'pulseaudio)
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(extensions
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(list (service-extension session-environment-service-type
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pulseaudio-environment)))
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(default-value #f)
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(description "Configure PulseAudio sound support.")))
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;;; sound.scm ends here
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