[mythtv-commits] Ticket #4476: BBC-HD Patch to use multiple cores for h264 decode, with minimal CPU load.

MythTV mythtv at cvs.mythtv.org
Tue Jan 15 19:59:37 UTC 2008


#4476: BBC-HD Patch to use multiple cores for h264 decode, with minimal CPU load.
-----------------------------------+----------------------------------------
 Reporter:  reidjr_at_lineone.net  |       Owner:  ijr 
     Type:  patch                  |      Status:  new 
 Priority:  minor                  |   Milestone:  0.21
Component:  mythtv                 |     Version:  head
 Severity:  medium                 |     Mlocked:  0   
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 Unpatched SVN does not utilize multiple cores for h.264 decoding. The
 attached patch was put together by Riz back in November, based on earlier
 patches by Janne. I have been using it successfully since then, and this
 is simply updated against r15448.

 The patch is hard coded to use two cores/threads, and will only kick in
 for h264 decode. It also is hard coded to always disable the loop filter,
 to mimimise cpu utilization. Without this patch I cannot watch BBC-HD on
 my 1.8GHz core2duo system. With the patch I can watch smooth 1080i at
 about 60% utilization of both cores. I would like to see this included in
 trunk if possible.

-- 
Ticket URL: <http://svn.mythtv.org/trac/ticket/4476>
MythTV <http://svn.mythtv.org/trac>
MythTV


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