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/*
* Copyright 2008-2013 Various Authors
* Copyright 2004 Timo Hirvonen
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef CMUS_MIXER_H
#define CMUS_MIXER_H
#ifndef __GNUC__
#include <fcntl.h>
#endif
#define NR_MIXER_FDS 4
enum {
/* volume changes */
MIXER_FDS_VOLUME,
/* output changes */
MIXER_FDS_OUTPUT
};
struct mixer_plugin_ops {
int (*init)(void);
int (*exit)(void);
int (*open)(int *volume_max);
int (*close)(void);
union {
int (*abi_1)(int *fds); // MIXER_FDS_VOLUME
int (*abi_2)(int what, int *fds);
} get_fds;
int (*set_volume)(int l, int r);
int (*get_volume)(int *l, int *r);
};
struct mixer_plugin_opt {
const char *name;
int (*set)(const char *val);
int (*get)(char **val);
};
/* symbols exported by plugin */
extern const struct mixer_plugin_ops op_mixer_ops;
extern const struct mixer_plugin_opt op_mixer_options[];
#endif
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