frameworks/av: Fix LOG_NDEBUG compilation errors

- Cleans up undefined references due to scope & naming

Change-Id: Ib342e57c69353fb873c6c0e7ba66e62983676f61
Long mp3 metadata displays as corrupted file after transfer

Cut the metadata to 1 Byte and return in function
getObjectPropertyList in order to show it properly on a PC.

Change-Id: Iefacf9fa86c20ece2572e6d95d35877a94066fe7