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| -rw-r--r-- | doc/mpd.conf.5 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/doc/mpd.conf.5 b/doc/mpd.conf.5 index 7ff364b8b..88c9a6d85 100644 --- a/doc/mpd.conf.5 +++ b/doc/mpd.conf.5 @@ -236,6 +236,26 @@ separate options. An example for oss: "dsp=/dev/dsp". An example for alsa09: This specifies how many bytes to write to the audio device at once. Used only by the ao output type. This parameter is to work around a bug in older versions of libao on sound cards with very small buffers. The default is 1024. +.SH OPTIONAL ALSA OUTPUT PARAMETERS +.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. +.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 5804us for CD-quality audio. .SH REQUIRED SHOUT OUTPUT PARAMETERS .TP .B name <name> |