fuzz test for detect subpic overlap at CTU level #289
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In d5dbcc0, it was hoped that detection of subpicture overlaps could be performed at the tile level, so as to avoid introducing per-CTU checks. Unfortunately since that patch, fuzzing has indicated there are some structures involving pps_subpic_one_or_more_tiles_slice where tile-level checking is not sufficient. Performing the check at the CTU level should (touch wood) be the be-all and and-all of this, as CTUs are the lowest common denominator of the picture partitioning. Signed-off-by: Frank Plowman <post@frankplowman.com>
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