Merge "better manage buffer for libstagefright_soft_mpeg4enc" into klp-dev am: 021575025c am: 5944b611e5 am: 1a419c7b2a am: 70a63bdf27 am: 40833da7b9 am: 2ad98cf1c7 am: be560fcb1c am: b9f302c2f0 am: 1c1d3116d9 am: f7350dd989
am: a06d2eb83e

Change-Id: I67cbeed83d25ff5aa228f6f418656a3d984daf09