[alsa-devel] [RFC PATCH 0/4] better support for bursty DMA usages

[Raymond Yau]

>>>
>>> TODO:
>>> 1. fixes and alsa-lib updates (compile-tested only for now)
>>
>>
>>
http://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa/alsa-sink.c?id=cb55b00ccd25d965b1222e74375aee05427a449b
>>
>> Do you need a new api snd_pcm_hw_params_can_rewind() for the application
to
>> know pcm device does not support rewind ?
>
> Yes, we do need that.
>
> Please see my LAC 2015 paper: http://lac.linuxaudio.org/2015/papers/10.pdf

What kind of driver or plugin will have this flag  ?

snd-aloop,

ioplug : pulse and  jack

Are those usb-audio configure as usb-passthrough inside vm still rewindable
?

How about multi plug when one of the slaves  has this flag ?

file plugin depend on whether slave device support rewind or not