[lkml]   [2016]   [Aug]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v2 0/3] USB Audio Gadget refactoring
Peter Chen wrote:
> I find UAC2 (UAC1 is ok) support is not well with the latest mainline
> kernel w/o your patch set. The windows7 can't install the driver
> successfully

Windows does not have UAC2 support.

> and the playback shows underrun (using local codec)
> using Linux host.

> # arecord -f dat -t wav -D hw:1,0 | aplay -D hw:0,0 &

The clocks of the two devices are not synchronized.

In the ALSA API, a PCM device is assumed to have its own clock, so it is
not possible to synchronize the USB gadget to the actual sound device
without some separate mechanism (like the old uac1 gadget probably has).


 \ /
  Last update: 2016-09-17 09:57    [W:0.083 / U:1.004 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site