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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 web)
#: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:
\f
;;;
;;; 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 #f)))
(define (alsa-config-file config)
"Return the ALSA configuration file corresponding to CONFIG."
(computed-file
"asound.conf"
#~(call-with-output-file #$output
(lambda (port)
(display "# Generated by 'alsa-service'.\n\n" port)
(when #$(alsa-configuration-pulseaudio? config)
(display "# 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\"
}
"
port))
(let ((extra-options #$(alsa-configuration-extra-options config)))
(when extra-options (display extra-options port)))))))
(define (alsa-activation config)
"Return the activation GEXP for CONFIG."
(with-imported-modules '((guix build utils))
#~(begin
(use-modules (guix build utils))
(copy-file #$(alsa-config-file config) "/etc/asound.conf"))))
(define alsa-service-type
(service-type
(name 'alsa)
(extensions
(list (service-extension activation-service-type alsa-activation)))
(default-value (alsa-configuration))
(description "Configure the alsa.")))
;;; alsa.scm ends here
|