59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
/*
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* Copyright 2003-2021 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/** \file
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*
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* This header declares the mixer_plugin class. It should not be
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* included directly; use MixerInternal.hxx instead in mixer
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* implementations.
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*/
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#ifndef MPD_MIXER_PLUGIN_HXX
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#define MPD_MIXER_PLUGIN_HXX
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struct ConfigBlock;
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class AudioOutput;
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class Mixer;
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class MixerListener;
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class EventLoop;
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struct MixerPlugin {
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/**
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* Alocates and configures a mixer device.
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*
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* Throws std::runtime_error on error.
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*
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* @param ao the associated #AudioOutput
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* @param param the configuration section
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* @return a mixer object
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*/
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Mixer *(*init)(EventLoop &event_loop, AudioOutput &ao,
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MixerListener &listener,
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const ConfigBlock &block);
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/**
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* If true, then the mixer is automatically opened, even if
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* its audio output is not open. If false, then the mixer is
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* disabled as long as its audio output is closed.
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*/
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bool global;
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};
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#endif
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