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/*
* Copyright 2003-2021 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_INFO_HXX
#define MPD_REPLAY_GAIN_INFO_HXX
#include "util/Compiler.h"
#include "ReplayGainMode.hxx"
struct ReplayGainConfig;
struct ReplayGainTuple {
float gain;
float peak;
void Clear() {
gain = -200;
peak = 0.0;
}
constexpr bool IsDefined() const {
return gain > -100;
}
static constexpr ReplayGainTuple Undefined() noexcept {
return {-200.0f, 0.0f};
}
gcc_pure
float CalculateScale(const ReplayGainConfig &config) const noexcept;
};
struct ReplayGainInfo {
ReplayGainTuple track, album;
constexpr bool IsDefined() const noexcept {
return track.IsDefined() || album.IsDefined();
}
static constexpr ReplayGainInfo Undefined() noexcept {
return {
ReplayGainTuple::Undefined(),
ReplayGainTuple::Undefined(),
};
}
const ReplayGainTuple &Get(ReplayGainMode mode) const noexcept {
return mode == ReplayGainMode::ALBUM
? (album.IsDefined() ? album : track)
: (track.IsDefined() ? track : album);
}
void Clear() noexcept {
track.Clear();
album.Clear();
}
};
#endif
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