[pulseaudio-discuss] how's fighting rewind going?

David Henningsson david.henningsson at canonical.com
Thu Jun 16 23:31:41 PDT 2011

On 2011-06-17 02:21, Lu Guanqun wrote:
> Hi David,
> How's your fighting rewind going?
> Now, I find there's a rewind flood in my environment, and it's doing a
> rewrite rewind all the times. At the time of rewinding, the write index
> is less than the read index.
> Do you have any idea what's going on? I'm only seeing this when I'm
> viewing an 1080p MP4 file.
> Thanks!

Hi Lu,

My patches has been optimisations so far, which means that it's reducing 
the amount of rewinds rather than eliminating them. With a slow enough 
computer (for Intel, the Atom comes to mind), or lots of other things to 
do for that computer (such as viewing an 1080p file?), the rewind flood 
thing can still happen.

What client are you using to connect to PulseAudio? For gstreamer based 
clients, my gstreamer patch was first applied upstream, then reverted 
for reasons I don't fully understand. Applying it is likely to help 
against rewinds. See bug https://bugzilla.gnome.org/show_bug.cgi?id=641072

David Henningsson, Canonical Ltd.

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