2 * Copyright (C) 2003-2010 The Music Player Daemon Project
3 * http://www.musicpd.org
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License along
16 * with this program; if not, write to the Free Software Foundation, Inc.,
17 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 #ifndef MPD_REPLAY_GAIN_INFO_H
21 #define MPD_REPLAY_GAIN_INFO_H
28 enum replay_gain_mode
{
34 struct replay_gain_tuple
{
39 struct replay_gain_info
{
40 struct replay_gain_tuple tuples
[2];
44 replay_gain_tuple_init(struct replay_gain_tuple
*tuple
)
46 tuple
->gain
= INFINITY
;
51 replay_gain_info_init(struct replay_gain_info
*info
)
53 replay_gain_tuple_init(&info
->tuples
[REPLAY_GAIN_ALBUM
]);
54 replay_gain_tuple_init(&info
->tuples
[REPLAY_GAIN_TRACK
]);
58 replay_gain_tuple_defined(const struct replay_gain_tuple
*tuple
)
60 return !isinf(tuple
->gain
);
64 replay_gain_tuple_scale(const struct replay_gain_tuple
*tuple
, float preamp
);
67 * Attempt to auto-complete missing data. In particular, if album
68 * information is missing, track gain is used.
71 replay_gain_info_complete(struct replay_gain_info
*info
);