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Diffstat (limited to '')
-rw-r--r-- | src/mixer/MixerAll.hxx | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/mixer/MixerAll.hxx b/src/mixer/MixerAll.hxx new file mode 100644 index 000000000..f868f64b5 --- /dev/null +++ b/src/mixer/MixerAll.hxx @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2003-2014 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 |