tree 6cac7cc7b693ff26b53939dc0b495ce6661eae17
parent 8303baf4d0b1e41f6a4eba41a6c49f4e04157ff7
author Chong Zhang <chz@google.com> 1522874159 -0700
committer Chong Zhang <chz@google.com> 1522952745 -0700

Extract exif data from mp4 extractor if available

Query the extractor for the exif data offset and length,
if it's available, read the exif block from the file.
Otherwise, set image dimension and rotation only.

bug: 76149934

Change-Id: I85f24b526fb356a9227941e20807fc96369c8536