tree 1c887f6ad07730f33f3fc4b7cf6923ea84d8121e
parent 9928ee0a52f9039021f0d6f6d00f7e5618c8e125
author Glenn Randers-Pehrson <glennrp at users.sourceforge.net> 1467990565 -0500
committer Glenn Randers-Pehrson <glennrp at users.sourceforge.net> 1467990565 -0500

[libpng16] Avoid filter-selection heuristic sum calculations in cases where

only one filter is a candidate for selection. This trades off code size (added
png_setup_*_row_only() functions) for speed.