Use LinearBlock buffer for thumbnail extraction

For the thumbnail extraction use case, if the codec is C2 codec, use LinearBlock buffer to allocate single input buffer.

Bug: 329521645
Test: MediaMetadataRetrieverTest
Merged-In: I365db0a58b2dee4a36f1bb183ef21d11c4600916
Change-Id: I365db0a58b2dee4a36f1bb183ef21d11c4600916
3 files changed