Merge "Apply input buffer validation also to AVC and MPEG4 encoders" into mnc-dev am: ec99046603 am: 616b039f43 am: 57a9404439 am: 349264d82b am: 4d65e3c2c0
am: 222b40ee7a

Change-Id: I5809acd7d8c01120fc53abea98067538f1fc8f51