mediapc 14: multi instance decoder

Bug: 270404051
Test: atest android.mediapc.cts.MultiDecoderPerfTest
(cherry picked from https://android-review.googlesource.com/q/commit:0407b809ae75b05db8866bb108b2ce836b49f2ac)
Merged-In: I308a3fd705e197dd7d4d2e49494ed011393cd615
Change-Id: I308a3fd705e197dd7d4d2e49494ed011393cd615
7 files changed