Merge "PreProcessing: Automated script for preprocessing test" am: 7b14cb277c am: 5bb2130614 am: 45e1488bc1

Original change: https://android-review.googlesource.com/c/platform/frameworks/av/+/1629276

Change-Id: I4ba6ca54a3a7f51cb85cabe721a391a297c9c876