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/*
* Copyright (C) 2003-2010 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* (c)2004 replayGain code by AliasMrJones
*/
#ifndef MPD_REPLAY_GAIN_H
#define MPD_REPLAY_GAIN_H
#include <stdbool.h>
enum replay_gain_mode {
REPLAY_GAIN_OFF = -1,
REPLAY_GAIN_ALBUM,
REPLAY_GAIN_TRACK,
};
struct audio_format;
extern enum replay_gain_mode replay_gain_mode;
struct replay_gain_tuple {
float gain;
float peak;
};
struct replay_gain_info {
struct replay_gain_tuple tuples[2];
/* used internally by mpd, to mess with it */
float scale;
};
struct replay_gain_info *
replay_gain_info_new(void);
void replay_gain_info_free(struct replay_gain_info *info);
void replay_gain_global_init(void);
/**
* Returns the current replay gain mode as a machine-readable string.
*/
const char *
replay_gain_get_mode_string(void);
/**
* Sets the replay gain mode, parsed from a string.
*
* @return true on success, false if the string could not be parsed
*/
bool
replay_gain_set_mode_string(const char *p);
void
replay_gain_apply(struct replay_gain_info *info, char *buffer, int bufferSize,
const struct audio_format *format);
#endif
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