tree aafbd84d809aa976554c4de7597db1234560ee8e
parent 5d88539848f2416e327da743f0c38ed597f8f089
author Eric Laurent <elaurent@google.com> 1576553645 -0800
committer Eric Laurent <elaurent@google.com> 1578683543 -0800

audioflinger: refactor EffectModule class

Introduce a class EffecBase as a parent class of
EffectModule with default implementation for handles management,
basic properties storage and state management.

Bug: 146177259
Test: CTS: AudioEffectTest, EqualizerTest, VisualizerTest,
AudioPreProcessingTest
Test: manual test: Play Music EQ settings, Duo EAC and NS
Change-Id: Id91cef9db6b4f6be0d2e77a8b4afcbdc7234e519
Merged-In: Id91cef9db6b4f6be0d2e77a8b4afcbdc7234e519