[mythtv] [patch] Fix for sluggish pause

Doug Larrick doug at ties.org
Tue Nov 30 03:40:49 UTC 2004

David Engel wrote:
> On Mon, Nov 29, 2004 at 08:28:35PM -0500, Doug Larrick wrote:
>>The attached patch fixes this problem.  It causes the decoder thread to 
>>release the decoder lock while waiting for an available video buffer. 
>>Not the prettiest way to shoehorn this in here, but at least it gets the 
>>job done and is unlikely to break in unforseen ways.
> This patch won't be going in.  The purpose of the lock is to ensure
> speed changes only occur when the lock is not held by the decoder
> thread and this change defeats that.
> The proper fix is to have NVP::GetFrame return early when it can't get
> a free buffer after a small amount of time.  Be sure to update the
> ivtv decoder for the skipping frames case because it works
> differently.  Also leave some kind of check to inform the user when
> the buffer queue really does get stuck.

Somebody who understands the issue here will have to have a try, then. 
Whatever the fix is should make sure the lock isn't held 99% of the 
time, though.

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