66 lines
1.8 KiB
C++
66 lines
1.8 KiB
C++
/*
|
|
* Copyright 2003-2019 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 <assert.h>
|
|
#include <stdlib.h>
|
|
#include <math.h>
|
|
|
|
static float
|
|
ParsePreamp(const char *s)
|
|
{
|
|
assert(s != nullptr);
|
|
|
|
char *endptr;
|
|
float f = strtod(s, &endptr);
|
|
if (endptr == s || *endptr != '\0')
|
|
throw std::invalid_argument("Not a numeric value");
|
|
|
|
if (f < -15 || f > 15)
|
|
throw std::invalid_argument("Number must be between -15 and 15");
|
|
|
|
return pow(10, f / 20.0);
|
|
}
|
|
|
|
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)
|
|
: 1.0;
|
|
});
|
|
|
|
replay_gain_config.missing_preamp = config.With(ConfigOption::REPLAYGAIN_MISSING_PREAMP, [](const char *s){
|
|
return s != nullptr
|
|
? ParsePreamp(s)
|
|
: 1.0;
|
|
});
|
|
|
|
replay_gain_config.limit = config.GetBool(ConfigOption::REPLAYGAIN_LIMIT,
|
|
ReplayGainConfig::DEFAULT_LIMIT);
|
|
|
|
return replay_gain_config;
|
|
}
|