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doc/mpd.conf.5: remove ALSA specific documentation

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ALSA is just one out of many output plugins, and detailed plugin
documentation should only live in the user manual, without having
duplicates in the (brief) manpage.

Also move "mixer_type" to the "optional audio output parameters"
section; it is a generic option, not specific to ALSA.

Closes https://github.com/MusicPlayerDaemon/MPD/issues/552
This commit is contained in:
Max Kellermann 2019-05-13 22:49:58 +02:00
parent de0afa0e08
commit ed2db04f43
1 changed files with 0 additions and 45 deletions
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doc/mpd.conf.5
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@ -163,57 +163,12 @@ Specifies how replay gain is applied. The default is "software",
which uses an internal software volume control. "mixer" uses the which uses an internal software volume control. "mixer" uses the
configured (hardware) mixer control. "none" disables replay gain on configured (hardware) mixer control. "none" disables replay gain on
this audio output. this audio output.
.SH OPTIONAL ALSA OUTPUT PARAMETERS
.TP
.B device <dev>
This specifies the device to use for audio output. The default is "default".
.TP .TP
.B mixer_type <hardware, software or none> .B mixer_type <hardware, software or none>
Specifies which mixer should be used for this audio output: the Specifies which mixer should be used for this audio output: the
hardware mixer (available for ALSA, OSS and PulseAudio), the software hardware mixer (available for ALSA, OSS and PulseAudio), the software
mixer or no mixer ("none"). By default, the hardware mixer is used mixer or no mixer ("none"). By default, the hardware mixer is used
for devices which support it, and none for the others. for devices which support it, and none for the others.
.TP
.B mixer_device <mixer dev>
This specifies which mixer to use. The default is "default". To use
the second sound card in a system, use "hw:1".
.TP
.B mixer_control <mixer ctrl>
This specifies which mixer control to use (sometimes referred to as
the "device"). The default is "PCM". Use "amixer scontrols" to see
the list of possible controls.
.TP
.B mixer_index <mixer index>
A number identifying the index of the named mixer control. This is
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 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
the resampling. "yes" is the default and allows ALSA to resample.
.TP
.B auto_channels <yes or no>
Setting this to "no" disables ALSA's channel conversion, if the
hardware does not support a specific number of channels. Default: "yes".
.TP
.B auto_format <yes or no>
Setting this to "no" disables ALSA's sample format conversion, if the
hardware does not support a specific sample format. Default: "yes".
.TP
.B buffer_time <time in microseconds>
This sets the length of the hardware sample buffer in microseconds. Increasing
it may help to reduce or eliminate skipping on certain setups. Most users do
not need to change this. The default is 500000 microseconds (0.5 seconds).
.TP
.B period_time <time in microseconds>
This sets the time between hardware sample transfers in microseconds.
Increasing this can reduce CPU usage while lowering it can reduce underrun
errors on bandwidth-limited devices. Some users have reported good results
with this set to 50000, but not all devices support values this high. Most
users do not need to change this. The default is 256000000 / sample_rate(kHz),
or 5804 microseconds for CD-quality audio.
.SH FILES .SH FILES
.TP .TP
.BI ~/.mpdconf .BI ~/.mpdconf