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97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/* libmpdclient
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(c) 2003-2015 The Music Player Daemon Project
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This project's homepage is: http://www.musicpd.org
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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- Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
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CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*! \file
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* \brief MPD client library
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*
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* Functions for manipulating MPD's mixer controls.
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*
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* Do not include this header directly. Use mpd/client.h instead.
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*/
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#ifndef MPD_MIXER_H
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#define MPD_MIXER_H
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#include <stdbool.h>
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struct mpd_connection;
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Sets the volume of all output devices.
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*
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* @param connection the connection to MPD
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* @param volume the volume, an integer between 0 and 100
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* @return true on success, false on error
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*/
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bool
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mpd_send_set_volume(struct mpd_connection *connection, unsigned volume);
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/**
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* Shortcut for mpd_send_set_volume() and mpd_response_finish().
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*
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* @param connection the connection to MPD
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* @param volume the volume, an integer between 0 and 100
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* @return true on success, false on error
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*/
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bool
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mpd_run_set_volume(struct mpd_connection *connection, unsigned volume);
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/**
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* Changes the volume of all output devices.
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*
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* @param connection the connection to MPD
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* @param relative_volume the relative volume, an integer between -100 and 100
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* @return true on success, false on error
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*
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* @since libmpdclient 2.9
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*/
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bool
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mpd_send_change_volume(struct mpd_connection *connection, int relative_volume);
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/**
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* Shortcut for mpd_send_change_volume() and mpd_response_finish().
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*
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* @param connection the connection to MPD
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* @param relative_volume the relative volume, an integer between -100 and 100
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* @return true on success, false on error
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*
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* @since libmpdclient 2.9
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*/
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bool
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mpd_run_change_volume(struct mpd_connection *connection, int relative_volume);
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#ifdef __cplusplus
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}
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#endif
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#endif
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