76 lines
1.8 KiB
C++
76 lines
1.8 KiB
C++
/*
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* Copyright 2003-2018 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_REPLAY_GAIN_INFO_HXX
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#define MPD_REPLAY_GAIN_INFO_HXX
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#include "util/Compiler.h"
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#include "ReplayGainMode.hxx"
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struct ReplayGainConfig;
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struct ReplayGainTuple {
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float gain;
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float peak;
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void Clear() {
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gain = -200;
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peak = 0.0;
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}
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constexpr bool IsDefined() const {
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return gain > -100;
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}
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static constexpr ReplayGainTuple Undefined() noexcept {
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return {-200.0f, 0.0f};
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}
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gcc_pure
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float CalculateScale(const ReplayGainConfig &config) const noexcept;
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};
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struct ReplayGainInfo {
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ReplayGainTuple track, album;
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constexpr bool IsDefined() const noexcept {
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return track.IsDefined() || album.IsDefined();
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}
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static constexpr ReplayGainInfo Undefined() noexcept {
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return {
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ReplayGainTuple::Undefined(),
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ReplayGainTuple::Undefined(),
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};
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}
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const ReplayGainTuple &Get(ReplayGainMode mode) const noexcept {
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return mode == ReplayGainMode::ALBUM
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? (album.IsDefined() ? album : track)
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: (track.IsDefined() ? track : album);
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}
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void Clear() noexcept {
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track.Clear();
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album.Clear();
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}
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};
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#endif
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