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+;;; emms-volume-amixer.el --- a mode for changing volume using amixer
+
+;; Copyright (C) 2006 Free Software Foundation, Inc.
+
+;; Author: Martin Schoenmakers <aiviru@diamond-age.net>
+
+;; This file 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 2, or (at your option)
+;; any later version.
+;;
+;; GNU Emacs 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 GNU Emacs; 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 defines a few simple functions to raise or lower the volume
+;; using amixer. It can be used stand-alone, though it's meant for usage
+;; with EMMS, particularly with emms-volume.el
+
+;;; History:
+
+;; May 30 2006: First cleanup and collation of amixer functions into a
+;;              separate file for releasability.
+
+;;; Todo:
+
+;; There probably needs to be more configurability, which may in turn
+;; mean adding some more functions.
+;; Some of this could benefit from adding customize interfaces.
+
+;;; Code:
+
+(defun emms-volume-amixer-sset-master (var)
+  "Change amixer master volume by VAR."
+  (start-process "mixer" nil "amixer" "sset" "Master" var))
+
+(defun emms-volume-amixer-raise ()
+  "Increase volume by 2%."
+  (interactive)
+  (emms-volume-amixer-sset-master "2%+"))
+
+(defun emms-volume-amixer-lower ()
+  "Decrease volume by 2%."
+  (interactive)
+  (emms-volume-amixer-sset-master "2%-"))
+
+(provide 'emms-volume-amixer)
+
+;;; emms-volume-amixer.el ends here