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authorOleg Pykhalov <go.wigust@gmail.com>2018-04-28 13:30:20 +0300
committerOleg Pykhalov <go.wigust@gmail.com>2018-05-02 15:11:13 +0300
commit8cd1e8e84926dc6ed1012a17609dea2d20ac41b4 (patch)
treed61e6475db179223c3e5983446aa2aa1c300684b /gnu/services/sound.scm
parentfb5b359d7715f85334dd3efdf72512b2a46caa47 (diff)
downloadpatches-8cd1e8e84926dc6ed1012a17609dea2d20ac41b4.tar
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gnu: Add sound service.
* gnu/services/sound.scm: New file. * gnu/local.mk (GNU_SYSTEM_MODULES): Add this. * doc/guix.texi (Sound Services): New chapter.
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+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2018 Oleg Pykhalov <go.wigust@gmail.com>
+;;;
+;;; This file is part of GNU Guix.
+;;;
+;;; GNU Guix is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or (at
+;;; your option) any later version.
+;;;
+;;; GNU Guix is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;; GNU General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
+
+(define-module (gnu services sound)
+ #:use-module (gnu services base)
+ #:use-module (gnu services configuration)
+ #:use-module (gnu services shepherd)
+ #:use-module (gnu services)
+ #:use-module (gnu system shadow)
+ #:use-module (guix gexp)
+ #:use-module (guix packages)
+ #:use-module (guix records)
+ #:use-module (guix store)
+ #:use-module (gnu packages pulseaudio)
+ #:use-module (ice-9 match)
+ #:export (alsa-configuration
+ alsa-service-type))
+
+;;; Commentary:
+;;;
+;;; Sound services.
+;;;
+;;; Code:
+
+
+;;;
+;;; ALSA
+;;;
+
+(define-record-type* <alsa-configuration>
+ alsa-configuration make-alsa-configuration alsa-configuration?
+ (pulseaudio? alsa-configuration-pulseaudio? ;boolean
+ (default #t))
+ (extra-options alsa-configuration-extra-options ;string
+ (default "")))
+
+(define (alsa-config-file config)
+ "Return the ALSA configuration file corresponding to CONFIG."
+ (plain-file "asound.conf"
+ (string-append "# Generated by 'alsa-service'.\n\n"
+ (if (alsa-configuration-pulseaudio? config)
+ "# Use PulseAudio by default
+pcm.!default {
+ type pulse
+ fallback \"sysdefault\"
+ hint {
+ show on
+ description \"Default ALSA Output (currently PulseAudio Sound Server)\"
+ }
+}
+
+ctl.!default {
+ type pulse
+ fallback \"sysdefault\"
+}
+"
+ "")
+ (alsa-configuration-extra-options config))))
+
+(define (alsa-etc-service config)
+ (list `("asound.conf" ,(alsa-config-file config))))
+
+(define alsa-service-type
+ (service-type
+ (name 'alsa)
+ (extensions
+ (list (service-extension etc-service-type alsa-etc-service)))
+ (default-value (alsa-configuration))
+ (description "Configure low-level Linux sound support, ALSA.")))
+
+;;; sound.scm ends here