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/*
* Copyright 2003-2020 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.
*/
#ifndef MPD_REPLAY_GAIN_FILTER_PLUGIN_HXX
#define MPD_REPLAY_GAIN_FILTER_PLUGIN_HXX
#include "ReplayGainMode.hxx"
#include <memory>
class Filter;
class PreparedFilter;
class Mixer;
struct ReplayGainConfig;
struct ReplayGainInfo;
/**
* @param allow_convert allow the class to convert to a different
* #SampleFormat to preserve quality?
*/
std::unique_ptr<PreparedFilter>
NewReplayGainFilter(const ReplayGainConfig &config,
bool allow_convert) noexcept;
/**
* Enables or disables the hardware mixer for applying replay gain.
*
* @param mixer the hardware mixer, or nullptr to fall back to software
* volume
* @param base the base volume level for scale=1.0, between 1 and 100
* (including).
*/
void
replay_gain_filter_set_mixer(PreparedFilter &_filter, Mixer *mixer,
unsigned base);
/**
* Sets a new #ReplayGainInfo at the beginning of a new song.
*
* @param info the new #ReplayGainInfo value, or nullptr if no replay
* gain data is available for the current song
*/
void
replay_gain_filter_set_info(Filter &filter, const ReplayGainInfo *info);
void
replay_gain_filter_set_mode(Filter &filter, ReplayGainMode mode);
#endif