/* * Copyright 2003-2017 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. */ #include "config.h" #include "ReplayGainInfo.hxx" #include "ReplayGainConfig.hxx" #include float ReplayGainTuple::CalculateScale(const ReplayGainConfig &config) const noexcept { float scale; if (IsDefined()) { scale = pow(10.0, gain / 20.0); scale *= config.preamp; if (scale > 15.0) scale = 15.0; if (config.limit && scale * peak > 1.0) scale = 1.0 / peak; } else scale = config.missing_preamp; return scale; }