See @uref{https://www.alsa-project.org/main/index.php/Asoundrc} for the
details.
-@deffn {Scheme Variable} pulseaudio-service-type
-This is the type for the @uref{http://www.pulseaudio.org/, PulseAudio
-sound server}, which sets the @var{LADSPA_PATH} environment variable to
-allow PulseAudio load modules from @code{swh-plugins} package.
+@deffn {Scheme Variable} ladspa-service-type
+This service sets the @var{LADSPA_PATH} variable, so that programs, which
+respect it, e.g. PulseAudio, can load LADSPA plugins.
-See @uref{http://plugin.org.uk/ladspa-swh/docs/ladspa-swh.html} for the
-details.
-
-The following example will setup the service:
+The following example will setup the service to enable modules from the
+@code{swh-plugins} package:
@lisp
-(service pulseaudio-service-type)
+(service ladspa-service-type
+ (ladspa-configuration (plugins (list swh-plugins))))
@end lisp
+
+See @uref{http://plugin.org.uk/ladspa-swh/docs/ladspa-swh.html} for the
+details.
+
@end deffn
@node Database Services
alsa-service-type
pulseaudio-configuration
- pulseaudio-service-type))
+ pulseaudio-service-type
+
+ ladspa-configuration
+ ladspa-service-type))
;;; Commentary:
;;;
(file-append pulseaudio "/etc/pulse/system.pa"))))
(define (pulseaudio-environment config)
- ;; Define this variable in the global environment such that
- ;; pulseaudio swh-plugins works.
- `(("LADSPA_PATH" . ,(file-append swh-plugins "/lib/ladspa"))
- ;; Define these variables, so that pulseaudio honors /etc.
+ `(;; Define these variables, so that pulseaudio honors /etc.
("PULSE_CONFIG" . "/etc/pulse/daemon.conf")
("PULSE_CLIENTCONFIG" . "/etc/pulse/client.conf")))
(default-value (pulseaudio-configuration))
(description "Configure PulseAudio sound support.")))
+\f
+;;;
+;;; LADSPA
+;;;
+
+(define-record-type* <ladspa-configuration>
+ ladspa-configuration make-ladspa-configuration
+ ladspa-configuration?
+ (plugins ladspa-plugins (default '())))
+
+(define (ladspa-environment config)
+ ;; Define this variable in the global environment such that
+ ;; pulseaudio swh-plugins (and similar LADSPA plugins) work.
+ `(("LADSPA_PATH" .
+ (string-join
+ ',(map (lambda (package) (file-append package "/lib/ladspa"))
+ (ladspa-plugins config))
+ ":"))))
+
+(define ladspa-service-type
+ (service-type
+ (name 'ladspa)
+ (extensions
+ (list (service-extension session-environment-service-type
+ ladspa-environment)))
+ (default-value (ladspa-configuration))
+ (description "Configure LADSPA plugins.")))
+
;;; sound.scm ends here