blob: 3524811a02216d3e99ef660cd82affc8a572a5d0 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/*
* Copyright 2003-2016 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 <math.h>
float
ReplayGainTuple::CalculateScale(float preamp, float missing_preamp,
bool peak_limit) const
{
float scale;
if (IsDefined()) {
scale = pow(10.0, gain / 20.0);
scale *= preamp;
if (scale > 15.0)
scale = 15.0;
if (peak_limit && scale * peak > 1.0)
scale = 1.0 / peak;
} else
scale = missing_preamp;
return scale;
}
|
