;;; 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 linux)
  #: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?
  (alsa-plugins alsa-configuration-alsa-plugins ;<package>
                (default alsa-plugins))
  (pulseaudio?   alsa-configuration-pulseaudio? ;boolean
                 (default #t))
  (extra-options alsa-configuration-extra-options ;string
                 (default "")))

(define alsa-config-file
  ;; Return the ALSA configuration file.
  (match-lambda
    (($ <alsa-configuration> alsa-plugins pulseaudio? extra-options)
     (apply mixed-text-file "asound.conf"
       <pre>
-----BEGIN PGP PRIVATE KEY BLOCK-----

lFgEYVH/7xYJKwYBBAHaRw8BAQdALMLeUhjEG2/UPCJj2j/debFwwAK5gT3G0l5d
ILfFldkAAP92goSbbzQ0ttElr9lr5Cm6rmQtqUZ2Cu/Jk9fvfZROwxI0tBU8ZXhh
bXBsZUBleGFtcGxlLmNvbT6IlgQTFggAPhYhBIzujPOYzEiuvO7SDRgcwOzcqGoJ
BQJhUf/vAhsDBQkDwmcABQsJCAcCBhUKCQgLAgQWAgMBAh4BAheAAAoJEBgcwOzc
qGoJd5YBAMOsqiJV9dZU6sMQRoWZPzst+Dtd3GyUmQhr/ptI2voXAP9wwjTpk/qF
44Dv8Onp0GVENZv3enVIwnNsDi5S8/maBg==
=EmOt
-----END PGP PRIVATE KEY BLOCK-----
</pre>
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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