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

Change-Id: I811d91df28a5eb49f72e0add5c58165066a50891