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output/alsa: remove option "use_mmap"

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MPD does not really take advantage of memory-mapped I/O by generating
data right into the ALSA buffer; using plain snd_pcm_mmap_writei() has
no advantage compared to snd_pcm_writei().  Let's kill this
non-feature.
This commit is contained in:
Max Kellermann
2016-02-28 09:30:59 +01:00
parent 111528e51c
commit 8ffcdb73e8
4 changed files with 9 additions and 56 deletions
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5
doc/mpd.conf.5
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@@ -238,11 +238,6 @@ probably only useful if your alsa device has more than one
identically\-named mixer control. The default is "0". Use "amixer
scontrols" to see the list of controls with their indexes.
.TP
.B use_mmap <yes or no>
Setting this allows you to use memory-mapped I/O. Certain hardware setups may
benefit from this, but most do not. Most users do not need to set this. The
default is to not use memory-mapped I/O.
.TP
.B auto_resample <yes or no>
Setting this to "no" disables ALSA's software resampling, if the
hardware does not support a specific sample rate. This lets MPD do