diff options
| -rw-r--r-- | doc/guix.texi | 44 | ||||
| -rw-r--r-- | gnu/local.mk | 1 | ||||
| -rw-r--r-- | gnu/services/sound.scm | 86 |
3 files changed, 131 insertions, 0 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index 87892fc892..dc9894173e 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -235,6 +235,7 @@ Services * X Window:: Graphical display. * Printing Services:: Local and remote printer support. * Desktop Services:: D-Bus and desktop services. +* Sound Services:: ALSA and Pulseaudio services. * Database Services:: SQL databases, key-value stores, etc. * Mail Services:: IMAP, POP3, SMTP, and all that. * Messaging Services:: Messaging services. @@ -9697,6 +9698,7 @@ declaration. * X Window:: Graphical display. * Printing Services:: Local and remote printer support. * Desktop Services:: D-Bus and desktop services. +* Sound Services:: ALSA and Pulseaudio services. * Database Services:: SQL databases, key-value stores, etc. * Mail Services:: IMAP, POP3, SMTP, and all that. * Messaging Services:: Messaging services. @@ -12842,6 +12844,48 @@ bluetooth keyboard or mouse. Users need to be in the @code{lp} group to access the D-Bus service. @end deffn +@node Sound Services +@subsubsection Sound Services + +@cindex sound support +@cindex ALSA +@cindex PulseAudio, sound support + +The @code{(gnu services sound)} module provides an +@code{alsa-service-type} service to generate an ALSA +@file{/etc/asound.conf} configuration file. This configuration file is +what allows applications that produce sound using ALSA to be correctly +handled. + +@deffn {Scheme Variable} alsa-service-type +This is the type for the @uref{https://alsa-project.org/, ALSA}, +@command{alsa-configuration} record as in this example: + +@example +(service alsa-service-type) +@end example + +See below for details about @code{alsa-configuration}. +@end deffn + +@deftp {Data Type} alsa-configuration +Data type representing the configuration for @code{alsa-service}. + +@table @asis +@item @code{pulseaudio?} (default: @var{#t}) +Whether ALSA applications should transparently be made to use the +@uref{http://www.pulseaudio.org/, PulseAudio} sound server. + +Using PulseAudio allows you to run several sound-producing applications +at the same time and to individual control them @i{via} +@command{pavucontrol}, among other things. + +@item @code{extra-options} (default: @var{""}) +String to append to the @file{asound.conf} file. + +@end table +@end deftp + @node Database Services @subsubsection Database Services diff --git a/gnu/local.mk b/gnu/local.mk index 39639ed506..cfe698d3ff 100644 --- a/gnu/local.mk +++ b/gnu/local.mk @@ -480,6 +480,7 @@ GNU_SYSTEM_MODULES = \ %D%/services/networking.scm \ %D%/services/nfs.scm \ %D%/services/shepherd.scm \ + %D%/services/sound.scm \ %D%/services/herd.scm \ %D%/services/pm.scm \ %D%/services/rsync.scm \ diff --git a/gnu/services/sound.scm b/gnu/services/sound.scm new file mode 100644 index 0000000000..5fe555e8b6 --- /dev/null +++ b/gnu/services/sound.scm @@ -0,0 +1,86 @@ +;;; 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 |