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authorYoni Rabkin <yoni@rabkins.net>2020-06-03 11:52:04 -0400
committerYoni Rabkin <yoni@rabkins.net>2020-06-03 11:52:04 -0400
commite102891fb3bbb3fec134b5c678a0dd2306b9beaf (patch)
treef69de3d75b8ccbc1719d1a60a86823e530f57300 /lisp/emms-volume.el
parentf177bf33cd8dac05908b19ae2c5c33ffbb5eeacf (diff)
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-;;; emms-volume.el --- Volume functions and a minor mode to adjust volume easily
-
-;; Copyright (C) 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
-
-;; Author: Martin Schoenmakers <aiviru@diamond-age.net>
-;; Bruno Félix Rezende Ribeiro <oitofelix@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, 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; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
-
-;;; Commentary:
-;;
-;; This file provides generally two things:
-;; Generic volume setting functions and some appropriate bindings for EMMS
-;; playlist buffers. These can also be bound to global keys,however, the
-;; second part may be more useful for this. This part provides functions
-;; meant to be bound to a global key (the author uses C-c e + and C-c e -),
-;; which then temporarily activates a minor mode allowing you to change the
-;; volume with just + and -. This mode deactivates a short (configurable)
-;; amount of time after the last volume change. This allows for easier volume
-;; adjustment without getting in the way.
-
-;;; History:
-
-;; May 2006: First stab at writing the minor mode.
-;;
-;; 30 May 2006: Cleanup and restructuring to fit with EMMS.
-
-;;; Todo:
-
-;; Some of this could benefit from adding customize interfaces.
-
-;;; Code:
-
-
-(require 'emms)
-(require 'emms-playlist-mode)
-(require 'emms-volume-amixer)
-(require 'emms-volume-pulse)
-(require 'emms-volume-mixerctl)
-
-;; Customize group
-(defgroup emms-volume nil
- "Volume setting for EMMS."
- :group 'emms)
-
-;; General volume setting related code.
-(defcustom emms-volume-change-function
- (cond
- ((executable-find "amixer") 'emms-volume-amixer-change)
- ((executable-find "pactl") 'emms-volume-pulse-change)
- ((executable-find "mixerctl") emms-volume-mixerctl-change)
- (t #'(lambda (amount) (user-error "%s" "No supported mixer found. Please, define ‘emms-volume-change-function’."))))
- "*The function to use to change the volume.
-If you have your own functions for changing volume, set this."
- :type '(choice (const :tag "Amixer" emms-volume-amixer-change)
- (const :tag "MPD" emms-volume-mpd-change)
- (const :tag "PulseAudio" emms-volume-pulse-change)
- (const :tag "Mixerctl" emms-volume-mixerctl-change)
- (function :tag "Lisp function"))
- :group 'emms-volume)
-
-(defcustom emms-volume-change-amount 2
- "The amount to use when raising or lowering the volume using the
-emms-volume interface.
-
-This should be a positive integer."
- :type 'integer
- :group 'emms-volume)
-
-;;;###autoload
-(defun emms-volume-raise ()
- "Raise the speaker volume."
- (interactive)
- (funcall emms-volume-change-function emms-volume-change-amount))
-
-;;;###autoload
-(defun emms-volume-lower ()
- "Lower the speaker volume."
- (interactive)
- (funcall emms-volume-change-function (- emms-volume-change-amount)))
-
-(define-key emms-playlist-mode-map (kbd "+") 'emms-volume-raise)
-(define-key emms-playlist-mode-map (kbd "-") 'emms-volume-lower)
-
-;; Code specific to the minor mode.
-(define-minor-mode emms-volume-minor-mode
- "Allows volume setting with + and - after an initial key combo."
- :global t
- :init-value nil
- :lighter " (+/-)"
- :keymap '(("+" . emms-volume-mode-plus)
- ("-" . emms-volume-mode-minus)))
-
-(defvar emms-volume-mode-timeout 2
- "*The timeout in amount of seconds used by `emms-volume-minor-mode'.")
-
-(defvar emms-volume-mode-timer nil
- "The timer `emms-volume-minor-mode' uses.")
-
-;;;###autoload
-(defun emms-volume-mode-plus ()
- "Raise volume and enable or extend the `emms-volume-minor-mode' timeout."
- (interactive)
- (emms-volume-raise)
- (emms-volume-mode-start-or-extend))
-
-;;;###autoload
-(defun emms-volume-mode-minus ()
- "Lower volume and enable or extend the `emms-volume-minor-mode' timeout."
- (interactive)
- (emms-volume-lower)
- (emms-volume-mode-start-or-extend))
-
-(defun emms-volume-mode-disable-timer ()
- "Disable `emms-volume-minor-mode' timer."
- (cancel-timer emms-volume-mode-timer)
- (setq emms-volume-mode-timer nil))
-
-(defun emms-volume-mode-set-timer ()
- "Set a new `emms-volume-minor-mode' timer."
- (when emms-volume-mode-timer
- (emms-volume-mode-disable-timer))
- (setq emms-volume-mode-timer (run-at-time emms-volume-mode-timeout
- nil
- 'emms-volume-mode-timer-timeout)))
-
-(defun emms-volume-mode-timer-timeout ()
- "Function to disable `emms-volume-minor-mode' at timeout."
- (setq emms-volume-mode-timer nil)
- (emms-volume-minor-mode -1))
-
-(defun emms-volume-mode-start-or-extend ()
- "Start `emms-volume-minor-mode' or extend its running time."
- (when (null emms-volume-minor-mode)
- (emms-volume-minor-mode 1))
- (emms-volume-mode-set-timer))
-
-(provide 'emms-volume)
-;;; emms-volume.el ends here