Use buffer vector to manage input/output buffer
Use buffer vector to manage input/output buffer

Change-Id: I68f0e6654db8249057114d084911d963dca8e1a3

smarter/aom,luctrudeau/aom,luctrudeau/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,GrokImageCompression/aom,luctrudeau/aom,smarter/aom,luctrudeau/aom,smarter/aom,luctrudeau/aom,luctrudeau/aom,smarter/aom,smarter/aom,smarter/aom