43 lines
1015 B
C++
43 lines
1015 B
C++
// SPDX-License-Identifier: GPL-2.0-or-later
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// Copyright The Music Player Daemon Project
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#include "ReplayGainConfig.hxx"
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#include "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::ReplayGainConfig(const ConfigData &config)
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: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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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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limit(config.GetBool(ConfigOption::REPLAYGAIN_LIMIT,
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ReplayGainConfig::DEFAULT_LIMIT))
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{
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}
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