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Cache object bindings

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This commit is contained in:
Milan Zamazal 2022-06-13 20:01:21 +02:00
parent 94bbd26205
commit 2d76e595a9
2 changed files with 19 additions and 15 deletions
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29
pw-lib.el
View File

@ -30,10 +30,12 @@
(defvar pw-lib--accessor (pw-cli-accessor))
(defvar pw-lib--objects '())
(defvar pw-lib--bindings nil)
(defun pw-lib-refresh ()
"Clear cache of objects retrieved from PipeWire."
(setq pw-lib--objects (pw-access-objects pw-lib--accessor)))
(setq pw-lib--objects (pw-access-objects pw-lib--accessor)
pw-lib--bindings nil))
(defun pw-lib-objects (&optional type)
"Return a list of PipeWire objects.
@ -119,23 +121,26 @@ An association lists with elements of the form (PARENT . CHILD) is
returned where PARENT and CHILD are numeric ids of PipeWire objects.
Note that PipeWire data is cached, if you need its up-to-date
version, call `pw-lib-refresh' first."
(apply #'nconc (mapcar #'(lambda (o)
(let ((o-id (pw-lib-object-id o)))
(mapcar #'(lambda (p)
(cons o-id (cdr p)))
(cl-remove-if-not #'numberp (pw-lib--object-info o)
:key #'cdr))))
(pw-lib-objects))))
(or pw-lib--bindings
(setq pw-lib--bindings
(apply #'nconc
(mapcar #'(lambda (o)
(let ((o-id (pw-lib-object-id o)))
(mapcar #'(lambda (p)
(cons o-id (cdr p)))
(cl-remove-if-not #'numberp (pw-lib--object-info o)
:key #'cdr))))
(pw-lib-objects))))))
(defun pw-lib-children (id bindings &optional type)
(defun pw-lib-children (id &optional type)
"Return child objects of the object identified by numeric PipeWire ID.
BINDINGS are object bindings as returned from `pw-lib-bindings'.
If a string TYPE is specified then only children of the given PipeWire
type are returned.
Note that PipeWire data is cached, if you need its up-to-date
version, call `pw-lib-refresh' first."
(let ((children (mapcar #'pw-lib-get-object
(mapcar #'car (cl-remove-if #'(lambda (b) (/= (cdr b) id)) bindings)))))
(mapcar #'car (cl-remove-if #'(lambda (b) (/= (cdr b) id))
(pw-lib-bindings))))))
(when type
(setq children (cl-remove-if-not #'(lambda (o) (equal (pw-lib-object-type o) type))
children)))
@ -233,7 +238,7 @@ If STORED-P is non-nil, set the stored default sink or source,
otherwise set the current default sink or source."
(pcase (pw-lib-object-type object)
("Device"
(dolist (node (pw-lib-children (pw-lib-object-id object) (pw-lib-bindings) "Node"))
(dolist (node (pw-lib-children (pw-lib-object-id object) "Node"))
(pw-lib--set-default-node node stored-p)))
("Node"
(pw-lib--set-default-node object stored-p))

5
pw-ui.el
View File

@ -137,16 +137,15 @@ The indicator is displayed only on graphical terminals."
(error "Not in a PipeWire buffer"))
(pw-lib-refresh)
(let ((inhibit-read-only t)
(bindings (pw-lib-bindings))
(default-ids (mapcar #'cdr (pw-lib-default-nodes)))
(current-line (count-lines (point-min) (min (1+ (point)) (point-max)))))
(erase-buffer)
(insert (pw-ui--label "Devices") "\n")
(dolist (device (pw-lib-objects "Device"))
(pw-ui--insert-line (pw-ui--object-label device default-ids) device)
(dolist (node (pw-lib-children (pw-lib-object-id device) bindings "Node"))
(dolist (node (pw-lib-children (pw-lib-object-id device) "Node"))
(pw-ui--insert-line (concat " " (pw-ui--object-label node default-ids)) node)
(dolist (port (pw-lib-children (pw-lib-object-id node) bindings "Port"))
(dolist (port (pw-lib-children (pw-lib-object-id node) "Port"))
(pw-ui--insert-line (concat " " (pw-ui--object-label port default-ids)) port))))
(insert (pw-ui--label "Clients") "\n")
(dolist (client (pw-lib-objects "Client"))