VT: provide last cvo value if it's not present.

[Problem] video has been rotated wrongly for
  very short time then recovered quickly.
[Cause] CCodec requires rotation value for every frame.
  if not present, it is showing default rotation.
[Solution] Provides last cvo value if cvo can not
  be parsed due to packet loss.

Bug: 183578712

Signed-off-by: Byeongjo Park <bjo.park@samsung.com>
Change-Id: Ifa4d15a5dfa07dcef808b3ca685cf5ee6aa5f8e9
4 files changed