67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/*
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* Copyright 2003-2020 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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#include "ReplayGainGlobal.hxx"
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#include "ReplayGainConfig.hxx"
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#include "config/Data.hxx"
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#include <cassert>
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#include <cmath>
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#include <cstdlib>
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#include <stdexcept>
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static float
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ParsePreamp(const char *s)
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{
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assert(s != nullptr);
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char *endptr;
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float f = std::strtof(s, &endptr);
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if (endptr == s || *endptr != '\0')
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throw std::invalid_argument("Not a numeric value");
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if (f < -15.0f || f > 15.0f)
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throw std::invalid_argument("Number must be between -15 and 15");
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return std::pow(10.0f, f / 20.0f);
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}
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ReplayGainConfig
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LoadReplayGainConfig(const ConfigData &config)
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{
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ReplayGainConfig replay_gain_config;
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replay_gain_config.preamp = config.With(ConfigOption::REPLAYGAIN_PREAMP, [](const char *s){
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return s != nullptr
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? ParsePreamp(s)
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: 1.0f;
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});
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replay_gain_config.missing_preamp = config.With(ConfigOption::REPLAYGAIN_MISSING_PREAMP, [](const char *s){
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return s != nullptr
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? ParsePreamp(s)
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: 1.0f;
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});
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replay_gain_config.limit = config.GetBool(ConfigOption::REPLAYGAIN_LIMIT,
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ReplayGainConfig::DEFAULT_LIMIT);
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return replay_gain_config;
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}
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