[mythtv] [Draft] Filter documentation.

Andrew Mahone andrewmahone at eml.cc
Wed Jan 28 01:35:50 EST 2004


On Tuesday 27 January 2004 06:44, Bruce Markey wrote:
> and even
> the signal quality from the video source.

This is actually not the case for the selective filters on CPUs w/ MMX.  
Because multiple values are processed as a vector, you can't have conditional 
branches on a per-value basis.  The MMX filters calculate filtered pixel 
values for all pixels, and use bit masks to select filtered/unfiltered pixels 
based on results from vector comparison.
-- 
  Andrew Mahone
  andrewmahone AT eml DOT cc


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