This avoids some waffling effects at the expense of some coding gain.
a594527 Add non-negative constraint to the pre/post filter search tool.
tools/od_defs.h | 1 +
tools/trans2d.c | 15 ++++++++++++---
tools/trans_tools.c | 6 ++++++
3 files changed, 19 insertions(+), 3 deletions(-)
Upstream: git.xiph.org