[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.
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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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