tree 3f780039366eef2d48a26989cb9ae7f21d8899a8
parent c62663e8429ee42518950ebcff3470be95ff49a3
author Wan-Teh Chang <wtc@google.com> 1537839596 -0700
committer Wan-Teh Chang <wtc@google.com> 1539035872 -0700

row_mt worker should check for bit reader overflow

This is the row_mt version of bug oss-fuzz:9663. The row_mt worker
should also check if the entropy decoder has read beyond the end of the
data buffer.

Move most of the code inside the first while loop in
row_mt_worker_hook() to the new parse_tile_row_mt() function. The check
for bit reader overflow is performed in parse_tile_row_mt(). One reason
for adding the new parse_tile_row_mt() function is to highlight its
similarity to the decode_tile() function,

Move the set_decode_func_pointers(td, 0x1) call in row_mt_worker_hook()
from inside the first while loop to the outside, so that it is called
only once.

BUG=oss-fuzz:10646,oss-fuzz:9663

Change-Id: I39735bb7dd8b879985e6cf87e8a24b9dbcd01a34
(cherry picked from commit fe9ce8d6c9a26057d77def3e8dde4d87c63b642c)