lisp/gnus/gnus-audio.el

   1 ;;; gnus-audio.el --- Sound effects for Gnus
   2
   3 ;; Copyright (C) 1996, 2000, 2001, 2002, 2003, 2004,
   4 ;;   2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
   5
   6 ;; Author: Steven L. Baur <steve@miranova.com>
   7 ;; Keywords: news, mail, multimedia
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;; This file provides access to sound effects in Gnus.
  27 ;; This file is partially stripped to support earcons.el.
  28
  29 ;;; Code:
  30
  31 (require 'nnheader)
  32
  33 (defgroup gnus-audio nil
  34   "Playing sound in Gnus."
  35   :version "21.1"
  36   :group 'gnus-visual
  37   :group 'multimedia)
  38
  39 (defvar gnus-audio-inline-sound
  40   (or (if (fboundp 'device-sound-enabled-p)
  41           (device-sound-enabled-p))     ; XEmacs
  42       (fboundp 'play-sound))            ; Emacs 21
  43   "Non-nil means try to play sounds without using an external program.")
  44
  45 (defcustom gnus-audio-directory (nnheader-find-etc-directory "sounds")
  46   "The directory containing the Sound Files."
  47   :type '(choice directory (const nil))
  48   :group 'gnus-audio)
  49
  50 (defcustom gnus-audio-au-player (executable-find "play")
  51   "Executable program for playing sun AU format sound files."
  52   :group 'gnus-audio
  53   :type '(choice file (const nil)))
  54
  55 (defcustom gnus-audio-wav-player (executable-find "play")
  56   "Executable program for playing WAV files."
  57   :group 'gnus-audio
  58   :type '(choice file (const nil)))
  59
  60 ;;; The following isn't implemented yet.  Wait for Millennium Gnus.
  61 ;;(defvar gnus-audio-effects-enabled t
  62 ;;  "When t, Gnus will use sound effects.")
  63 ;;(defvar gnus-audio-enable-hooks nil
  64 ;;  "Functions run when enabling sound effects.")
  65 ;;(defvar gnus-audio-disable-hooks nil
  66 ;;  "Functions run when disabling sound effects.")
  67 ;;(defvar gnus-audio-theme-song nil
  68 ;;  "Theme song for Gnus.")
  69 ;;(defvar gnus-audio-enter-group nil
  70 ;;  "Sound effect played when selecting a group.")
  71 ;;(defvar gnus-audio-exit-group nil
  72 ;;  "Sound effect played when exiting a group.")
  73 ;;(defvar gnus-audio-score-group nil
  74 ;;  "Sound effect played when scoring a group.")
  75 ;;(defvar gnus-audio-busy-sound nil
  76 ;;  "Sound effect played when going into a ... sequence.")
  77
  78
  79 ;;;###autoload
  80 ;;(defun gnus-audio-enable-sound ()
  81 ;;  "Enable Sound Effects for Gnus."
  82 ;;  (interactive)
  83 ;;  (setq gnus-audio-effects-enabled t)
  84 ;;  (gnus-run-hooks gnus-audio-enable-hooks))
  85
  86 ;;;###autoload
  87                                         ;(defun gnus-audio-disable-sound ()
  88 ;;  "Disable Sound Effects for Gnus."
  89 ;;  (interactive)
  90 ;;  (setq gnus-audio-effects-enabled nil)
  91 ;;  (gnus-run-hooks gnus-audio-disable-hooks))
  92
  93 ;;;###autoload
  94 (defun gnus-audio-play (file)
  95   "Play a sound FILE through the speaker."
  96   (interactive "fSound file name: ")
  97   (let ((sound-file (if (file-exists-p file)
  98                         file
  99                       (expand-file-name file gnus-audio-directory))))
 100     (when (file-exists-p sound-file)
 101       (cond ((and gnus-audio-inline-sound
 102                  (condition-case nil
 103                      ;; Even if we have audio, we may fail with the
 104                      ;; wrong sort of sound file.
 105                      (progn (play-sound-file sound-file)
 106                             t)
 107                    (error nil))))
 108             ;; If we don't have built-in sound, or playing it failed,
 109             ;; try with external program.
 110             ((equal "wav" (file-name-extension sound-file))
 111              (call-process gnus-audio-wav-player
 112                            sound-file
 113                            0
 114                            nil
 115                            sound-file))
 116             ((equal "au" (file-name-extension sound-file))
 117              (call-process gnus-audio-au-player
 118                            sound-file
 119                            0
 120                            nil
 121                            sound-file))))))
 122
 123
 124 ;;; The following isn't implemented yet, wait for Red Gnus
 125 ;;(defun gnus-audio-startrek-sounds ()
 126 ;;  "Enable sounds from Star Trek the original series."
 127 ;;  (interactive)
 128 ;;  (setq gnus-audio-busy-sound "working.au")
 129 ;;  (setq gnus-audio-enter-group "bulkhead_door.au")
 130 ;;  (setq gnus-audio-exit-group "bulkhead_door.au")
 131 ;;  (setq gnus-audio-score-group "ST_laser.au")
 132 ;;  (setq gnus-audio-theme-song "startrek.au")
 133 ;;  (add-hook 'gnus-select-group-hook 'gnus-audio-startrek-select-group)
 134 ;;  (add-hook 'gnus-exit-group-hook 'gnus-audio-startrek-exit-group))
 135 ;;;***
 136
 137 (defvar gnus-startup-jingle "Tuxedomoon.Jingle4.au"
 138   "Name of the Gnus startup jingle file.")
 139
 140 (defun gnus-play-jingle ()
 141   "Play the Gnus startup jingle, unless that's inhibited."
 142   (interactive)
 143   (gnus-audio-play gnus-startup-jingle))
 144
 145 (provide 'gnus-audio)
 146
 147 (run-hooks 'gnus-audio-load-hook)
 148
 149 ;; arch-tag: 6f129e78-3416-4fc9-973f-6cf5ac8d654b
 150 ;;; gnus-audio.el ends here