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/*
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 * Copyright 2008-2011 Various Authors
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 * Copyright 2004 Timo Hirvonen
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 *
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 * This program is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU General Public License as
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 * published by the Free Software Foundation; either version 2 of the
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 * License, or (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, but
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 * WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * 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
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 * along with this program; if not, see <http://www.gnu.org/licenses/>.
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 */
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#ifndef _MIXER_H





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#define _MIXER_H





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#ifndef __GNUC__





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#include <fcntl.h>





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#endif





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#define NR_MIXER_FDS 4





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struct mixer_plugin_ops {





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	int (*init)(void);





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	int (*exit)(void);





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	int (*open)(int *volume_max);





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	int (*close)(void);





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	int (*get_fds)(int *fds);





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	int (*set_volume)(int l, int r);





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	int (*get_volume)(int *l, int *r);





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	int (*set_option)(int key, const char *val);





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	int (*get_option)(int key, char **val);





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};





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/* symbols exported by plugin */





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extern const struct mixer_plugin_ops op_mixer_ops;





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extern const char * const op_mixer_options[];





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#endif