MPD  0.20.15
CrossFade.hxx
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1 /*
2  * Copyright 2003-2017 The Music Player Daemon Project
3  * http://www.musicpd.org
4  *
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19 
20 #ifndef MPD_CROSSFADE_HXX
21 #define MPD_CROSSFADE_HXX
22 
23 #include "Compiler.h"
24 
25 struct AudioFormat;
26 class SignedSongTime;
27 
32  float duration;
33 
34  float mixramp_db;
35 
41 
43  :duration(0),
44  mixramp_db(0),
45  mixramp_delay(-1)
46  {}
47 
48 
63  gcc_pure
64  unsigned Calculate(SignedSongTime total_time,
65  float replay_gain_db, float replay_gain_prev_db,
66  const char *mixramp_start,
67  const char *mixramp_prev_end,
68  AudioFormat af, AudioFormat old_format,
69  unsigned max_chunks) const noexcept;
70 };
71 
72 #endif
This structure describes the format of a raw PCM stream.
Definition: AudioFormat.hxx:37
gcc_pure unsigned Calculate(SignedSongTime total_time, float replay_gain_db, float replay_gain_prev_db, const char *mixramp_start, const char *mixramp_prev_end, AudioFormat af, AudioFormat old_format, unsigned max_chunks) const noexcept
Calculate how many music pipe chunks should be used for crossfading.
A variant of SongTime that is based on a signed integer.
Definition: Chrono.hxx:115
float duration
The configured cross fade duration [s].
Definition: CrossFade.hxx:32
float mixramp_delay
The configured MixRapm delay [s].
Definition: CrossFade.hxx:40
#define gcc_pure
Definition: Compiler.h:116