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;;; emms-player-vlc.el --- vlc support for EMMS -*- lexical-binding: t; -*-
;; Copyright (C) 2008-2021 Free Software Foundation, Inc.
;; Authors: Yoni Rabkin <yrk@gnu.org>
;; This file is part of EMMS.
;; EMMS 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.
;; EMMS 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 EMMS; if not, write to the Free Software Foundation,
;; Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
;;; Commentary:
;;; Code:
(require 'emms-compat)
(require 'emms-player-simple)
;; I use this macro, and later override some of the stuff it defines
;; in order to accomodate VLC's particular idioms.
(define-emms-simple-player vlc '(file url)
(concat "\\`\\(http[s]?\\|mms\\)://\\|"
(apply #'emms-player-simple-regexp
emms-player-base-format-list))
"vlc" "--intf=rc")
(define-emms-simple-player vlc-playlist '(streamlist)
"\\`http[s]?://"
"vlc" "--intf=rc")
;; (kludge) By default, VLC does not quit after finishing to play a
;; track, so the player sentinel has no way of telling that the next
;; track should be played. Therefore I redefine this low-level
;; function and add a "quit" track which is invisible to Emms.
(advice-add 'emms-player-vlc-start :override #'emms--vlc-quit-after-finish)
(defun emms--vlc-quit-after-finish (track &rest _)
(let ((process (apply #'start-process
emms-player-simple-process-name
nil
emms-player-vlc-command-name
;; splice in params here
(append emms-player-vlc-parameters
(list (emms-track-name track))
'("vlc://quit")))))
;; Add a sentinel for signaling termination.
(set-process-sentinel process #'emms-player-simple-sentinel))
(emms-player-started emms-player-vlc))
(defun emms-player-vlc-pause ()
"Depends on vlc's rc mode."
(process-send-string
emms-player-simple-process-name "pause\n"))
(defun emms-player-vlc-seek (sec)
"Seek relative within a stream."
(when (not (= 0 sec))
(process-send-string
emms-player-simple-process-name
(if (< 0 sec) "fastforward\n" "rewind\n"))))
(defun emms-player-vlc-seek-to (sec)
"Seek to time SEC within the stream."
(process-send-string
emms-player-simple-process-name
(format "seek %d\n" sec)))
(emms-player-set emms-player-vlc 'pause 'emms-player-vlc-pause)
(emms-player-set emms-player-vlc 'resume nil) ; pause is also resume
(emms-player-set emms-player-vlc 'start 'emms-player-vlc-start)
(emms-player-set emms-player-vlc 'seek 'emms-player-vlc-seek)
(emms-player-set emms-player-vlc 'seek-to 'emms-player-vlc-seek-to)
(provide 'emms-player-vlc)
;;; emms-player-vlc.el ends here
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