tree 6851855b0851748d0ffce6f236a0ee1989619560
parent 9e9058be139a32f2d03eddce97fb15ecca92e6bc
author noel@chromium.org <noel@chromium.org> 1430134048 +0000
committer noel@chromium.org <noel@chromium.org> 1430134048 +0000

Fix libjpeg_turbo svn r64 libjpeg6b compat issue

Make the fast path Huffman decoder fallback to the slow decoding path if
the Huffman decoding bit sentinel > 16, this to match libjpeg6b decoding
by reproducing the exact behavior of jpeg_huff_decode().

When this sentinel check is missing (see bug), libjpeg_turbo can produce
two (or more) different decoded images for the same input data depending
on how transport systems (eg., networks) packetize the data for delivery
to end-systems, web browsers for example.

Note: libjpeg6b produces the same decoded image, irrespective of how the
input data is placed in network packets. This fix makes libjpeg_turbo do
the same for compat with libjpeg6b.

TBR=darin@chromium.org
BUG=chromium:398235

Review URL: https://codereview.appspot.com/229430043

git-svn-id: http://src.chromium.org/svn/trunk/deps/third_party/libjpeg_turbo@295003 4ff67af0-8c30-449e-8e8b-ad334ec8d88c