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-/*
- * Copyright (C) 2003-2013 The Music Player Daemon Project
- * http://www.musicpd.org
- *
- * This program 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 of the License, or
- * (at your option) any later version.
- *
- * This program 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 this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- */
-
-/** \file
- *
- * Functions which affect the mixers of all audio outputs.
- */
-
-#ifndef MPD_MIXER_ALL_HXX
-#define MPD_MIXER_ALL_HXX
-
-#include "Compiler.h"
-
-/**
- * Returns the average volume of all available mixers (range 0..100).
- * Returns -1 if no mixer can be queried.
- */
-gcc_pure
-int
-mixer_all_get_volume(void);
-
-/**
- * Sets the volume on all available mixers.
- *
- * @param volume the volume (range 0..100)
- * @return true on success, false on failure
- */
-bool
-mixer_all_set_volume(unsigned volume);
-
-/**
- * Similar to mixer_all_get_volume(), but gets the volume only for
- * software mixers. See #software_mixer_plugin. This function fails
- * if no software mixer is configured.
- */
-gcc_pure
-int
-mixer_all_get_software_volume(void);
-
-/**
- * Similar to mixer_all_set_volume(), but sets the volume only for
- * software mixers. See #software_mixer_plugin. This function cannot
- * fail, because the underlying software mixers cannot fail either.
- */
-void
-mixer_all_set_software_volume(unsigned volume);
-
-#endif