MPD  0.20.18
ReplayGainInfo.hxx
Go to the documentation of this file.
1 /*
2  * Copyright 2003-2017 The Music Player Daemon Project
3  * http://www.musicpd.org
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License along
16  * with this program; if not, write to the Free Software Foundation, Inc.,
17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18  */
19 
20 #ifndef MPD_REPLAY_GAIN_INFO_HXX
21 #define MPD_REPLAY_GAIN_INFO_HXX
22 
23 #include "check.h"
24 #include "Compiler.h"
25 #include "ReplayGainMode.hxx"
26 
27 struct ReplayGainConfig;
28 
30  float gain;
31  float peak;
32 
33  void Clear() {
34  gain = -200;
35  peak = 0.0;
36  }
37 
38  constexpr bool IsDefined() const {
39  return gain > -100;
40  }
41 
42  gcc_pure
43  float CalculateScale(const ReplayGainConfig &config) const noexcept;
44 };
45 
48 
49  constexpr bool IsDefined() const noexcept {
50  return track.IsDefined() || album.IsDefined();
51  }
52 
53  const ReplayGainTuple &Get(ReplayGainMode mode) const noexcept {
54  return mode == ReplayGainMode::ALBUM
55  ? (album.IsDefined() ? album : track)
56  : (track.IsDefined() ? track : album);
57  }
58 
59  void Clear() noexcept {
60  track.Clear();
61  album.Clear();
62  }
63 };
64 
65 #endif
ReplayGainMode
gcc_pure float CalculateScale(const ReplayGainConfig &config) const noexcept
ReplayGainTuple album
ReplayGainTuple track
const ReplayGainTuple & Get(ReplayGainMode mode) const noexcept
void Clear() noexcept
constexpr bool IsDefined() const
constexpr bool IsDefined() const noexcept
#define gcc_pure
Definition: Compiler.h:116