59 lines
1.5 KiB
C
59 lines
1.5 KiB
C
/*
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* Copyright 2008-2013 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 CMUS_MIXER_H
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#define CMUS_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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enum {
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/* volume changes */
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MIXER_FDS_VOLUME,
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/* output changes */
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MIXER_FDS_OUTPUT
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};
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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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union {
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int (*abi_1)(int *fds); // MIXER_FDS_VOLUME
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int (*abi_2)(int what, int *fds);
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} get_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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};
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struct mixer_plugin_opt {
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const char *name;
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int (*set)(const char *val);
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int (*get)(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 struct mixer_plugin_opt op_mixer_options[];
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#endif
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