| 1 | ;;; emms-player-vlc.el --- vlc support for EMMS -*- lexical-binding: t; -*- |
| 2 | |
| 3 | ;; Copyright (C) 2008-2021 Free Software Foundation, Inc. |
| 4 | |
| 5 | ;; Authors: Yoni Rabkin <yrk@gnu.org> |
| 6 | |
| 7 | ;; This file is part of EMMS. |
| 8 | |
| 9 | ;; EMMS is free software; you can redistribute it and/or |
| 10 | ;; modify it under the terms of the GNU General Public License |
| 11 | ;; as published by the Free Software Foundation; either version 3 |
| 12 | ;; of the License, or (at your option) any later version. |
| 13 | |
| 14 | ;; EMMS is distributed in the hope that it will be useful, |
| 15 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | ;; GNU General Public License for more details. |
| 18 | |
| 19 | ;; You should have received a copy of the GNU General Public License |
| 20 | ;; along with EMMS; if not, write to the Free Software Foundation, |
| 21 | ;; Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. |
| 22 | |
| 23 | ;;; Commentary: |
| 24 | |
| 25 | ;;; Code: |
| 26 | |
| 27 | (require 'emms-compat) |
| 28 | (require 'emms-player-simple) |
| 29 | |
| 30 | ;; I use this macro, and later override some of the stuff it defines |
| 31 | ;; in order to accomodate VLC's particular idioms. |
| 32 | (define-emms-simple-player vlc '(file url) |
| 33 | (concat "\\`\\(http[s]?\\|mms\\)://\\|" |
| 34 | (apply #'emms-player-simple-regexp |
| 35 | emms-player-base-format-list)) |
| 36 | "vlc" "--intf=rc") |
| 37 | |
| 38 | (define-emms-simple-player vlc-playlist '(streamlist) |
| 39 | "\\`http[s]?://" |
| 40 | "vlc" "--intf=rc") |
| 41 | |
| 42 | ;; (kludge) By default, VLC does not quit after finishing to play a |
| 43 | ;; track, so the player sentinel has no way of telling that the next |
| 44 | ;; track should be played. Therefore I redefine this low-level |
| 45 | ;; function and add a "quit" track which is invisible to Emms. |
| 46 | (advice-add 'emms-player-vlc-start :override #'emms--vlc-quit-after-finish) |
| 47 | (defun emms--vlc-quit-after-finish (track &rest _) |
| 48 | (let ((process (apply #'start-process |
| 49 | emms-player-simple-process-name |
| 50 | nil |
| 51 | emms-player-vlc-command-name |
| 52 | ;; splice in params here |
| 53 | (append emms-player-vlc-parameters |
| 54 | (list (emms-track-name track)) |
| 55 | '("vlc://quit"))))) |
| 56 | ;; Add a sentinel for signaling termination. |
| 57 | (set-process-sentinel process #'emms-player-simple-sentinel)) |
| 58 | (emms-player-started emms-player-vlc)) |
| 59 | |
| 60 | (defun emms-player-vlc-pause () |
| 61 | "Depends on vlc's rc mode." |
| 62 | (process-send-string |
| 63 | emms-player-simple-process-name "pause\n")) |
| 64 | |
| 65 | (defun emms-player-vlc-seek (sec) |
| 66 | "Seek relative within a stream." |
| 67 | (when (not (= 0 sec)) |
| 68 | (process-send-string |
| 69 | emms-player-simple-process-name |
| 70 | (if (< 0 sec) "fastforward\n" "rewind\n")))) |
| 71 | |
| 72 | (defun emms-player-vlc-seek-to (sec) |
| 73 | "Seek to time SEC within the stream." |
| 74 | (process-send-string |
| 75 | emms-player-simple-process-name |
| 76 | (format "seek %d\n" sec))) |
| 77 | |
| 78 | (emms-player-set emms-player-vlc 'pause 'emms-player-vlc-pause) |
| 79 | (emms-player-set emms-player-vlc 'resume nil) ; pause is also resume |
| 80 | (emms-player-set emms-player-vlc 'start 'emms-player-vlc-start) |
| 81 | (emms-player-set emms-player-vlc 'seek 'emms-player-vlc-seek) |
| 82 | (emms-player-set emms-player-vlc 'seek-to 'emms-player-vlc-seek-to) |
| 83 | |
| 84 | (provide 'emms-player-vlc) |
| 85 | |
| 86 | ;;; emms-player-vlc.el ends here |