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