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;;; jao-mpris.el --- mpris players control -*- lexical-binding: t; -*-
;; Copyright (C) 2020, 2021, 2022 jao
;; Author: jao <mail@jao.io>
;; Keywords: multimedia
;; This program 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.
;; This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; controlling and showing info on mpris players
;;; Code:
(require 'dbus)
(require 'jao-themes)
(require 'jao-minibuffer)
(defvar jao-mpris-player "playerctld")
(defun jao-mpris--playerctl (&rest args)
(shell-command-to-string (format "playerctl -p %s %s"
jao-mpris-player
(mapconcat #'shell-quote-argument args " "))))
(defmacro jao-playerctl--def (name &rest args)
`(defun ,name () (interactive) (jao-mpris--playerctl ,@args)))
(jao-playerctl--def jao-mpris-play-pause "play-pause")
(jao-playerctl--def jao-mpris-next "next")
(jao-playerctl--def jao-mpris-previous "previous")
(defun jao-mpris-seek (secs)
(interactive "p")
(let ((secs (if (zerop secs) 10 secs)))
(jao-mpris--playerctl "position" (format "%d" secs))))
(defun jao-mpris-seek-back (secs)
(interactive "p")
(jao-mpris-seek (- secs)))
(defun jao-mpris-vol (n)
(interactive "p")
(let ((secs (if (zerop n) 10 n)))
(jao-mpris--playerctl "volume" (format "%d" n))))
(defun jao-mpris-vol-down (n)
(interactive "p")
(jao-mpris-vol (- n)))
(defun jao-playerctl--status (&optional sep)
(let* ((sep (or sep " ||| "))
(fmt (mapconcat 'identity
'("{{status}}"
"{{xesam:trackNumber}}"
"{{title}}"
"{{artist}}"
"{{album}}"
"{{duration(mpris:length)}}")
sep))
(m (jao-mpris--playerctl "metadata" "--format" fmt))
(e (split-string (car (split-string m "\n")) sep)))
`((status . ,(car e))
(track . ,(cadr e))
(title . ,(caddr e))
(artist . ,(cadddr e))
(album . ,(elt e 4))
(duration . ,(last e)))))
;;;###autoload
(defun jao-mpris-status-times ()
(interactive)
(let ((m (jao-mpris--playerctl "metadata" "--format"
(concat "{{duration(position)}}/"
"{{duration(mpris:length)}}"))))
(jao-notify (string-trim m) "Playing")))
(defvar jao-mpris--current nil)
(defvar jao-mpris-track-string "")
(defun jao-mpris--get (k &optional l)
(alist-get k (or l jao-mpris--current)))
(defun jao-mpris--set-current (k v)
(when v (setf (alist-get k jao-mpris--current "" t) v)))
(defun jao-mpris--del-current (k)
(setf (alist-get k jao-mpris--current "" t) ""))
(defun jao-mpris--fmt-time (x suffix)
(if x (format "%02d:%02d%s" (/ x 60) (mod x 60) (or suffix "")) ""))
(defun jao-mpris--format (&optional info)
(let* ((artist (jao-mpris--get 'artist info))
(title (jao-mpris--get 'title info))
(track (jao-mpris--get 'track info))
(album (jao-mpris--get 'album info))
(len (jao-mpris--get 'length info))
(duration (jao-mpris--get 'duration info))
(duration (cond (duration duration)
((stringp len) len)
((numberp len) (jao-mpris--fmt-time (/ len 1e6) "")))))
(format " %s %s %s%s%s"
(jao--put-face (format "%s" (or track "")) 'jao-themes-f00)
(jao--put-face (or title "") 'jao-themes-f01)
(jao--put-face (or artist "") 'jao-themes-f11)
(jao--put-face (if album (format " (%s)" album) "")
'jao-themes-f01)
(if duration (format " %s" duration) ""))))
(defun jao-mpris--track (&optional info)
(let ((info (or info (jao-playerctl--status))))
(if (string= "Playing" (jao-mpris--get 'status info))
(setq jao-mpris-track-string (jao-mpris--format info))
(setq jao-mpris-track-string "")))
(jao-minibuffer-refresh))
;;;###autoload
(defun jao-mpris-artist-title ()
(when jao-mpris--current
(cons (jao-mpris--get 'artist) (jao-mpris--get 'title))))
;;;###autoload
(defun jao-mpris-show-osd (&optional refresh)
(interactive "P")
(when refresh (jao-mpris--track))
(when jao-mpris--current
(jao-notify (format "%s%s" (if-let (s (jao-mpris--get 'status))
(format "%s: " s)
"")
(jao-mpris--format)))))
(defun jao-mpris-minibuffer-order (order)
(if (< order 0)
(jao-minibuffer-add-msg-variable 'jao-mpris-track-string (- order))
(jao-minibuffer-add-variable 'jao-mpris-track-string order)))
(defun jao-mpris--handler (_iname properties &rest _args)
(let ((inhibit-message t))
(message "Received properties: %S from %s" properties _iname))
(when-let (md (caadr (assoc "Metadata" properties)))
(let ((tno (caadr (assoc "xesam:trackNumber" md)))
(tlt (caadr (assoc "xesam:title" md)))
(art (caaadr (assoc "xesam:artist" md)))
(alb (caadr (assoc "xesam:album" md)))
(len (caadr (assoc "mpris:length" md))))
(jao-mpris--set-current 'track tno)
(jao-mpris--set-current 'title tlt)
(jao-mpris--set-current 'artist art)
(jao-mpris--set-current 'album alb)
(jao-mpris--set-current 'length len)))
(when-let (st (caadr (assoc "PlaybackStatus" properties)))
(jao-mpris--set-current 'status st)
(when (string= st "Stopped")
(dolist (k '(track title artist album length))
(jao-mpris--del-current k))))
(jao-mpris--track jao-mpris--current))
;;;###autoload
(defun jao-mpris-register (name &optional bus order)
(setq jao-mpris-player name)
(dbus-register-signal (or bus :session)
name
"/org/mpris/MediaPlayer2"
"org.freedesktop.DBus.Properties"
"PropertiesChanged"
'jao-mpris--handler)
(when order (jao-mpris-minibuffer-order order)))
(provide 'jao-mpris)
;;; jao-mpris.el ends here
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