This commit add support for encoding and decoding of MDCV, CLL, CCV and
AVE SEI messages
Test: avcenc -c enc.cfg, avcdec -c dec.cfg
Bug: 141931623
Change-Id: Idc0b0db5291482ae2bc19cdff65669c32374b02a
Changed macro specifying the minimum size required for output buffer.
Added an error check on the size allocated for output buffer.
Change-Id: I98e4f46e62ffc974df760f2633689de079ca3e5e