Add a new InputClassifier stage

The new InputClassifier stage could be used for additional processing
of input events prior to sending them to InputDispatcher. The new flow
of events will be InputReader -> InputClassifier -> InputDispatcher.

Here, we are calling the InputClassifier HAL and setting the MotionEvent
classification appropriately.

Bug: 62940136
Test: override notifyMotion to add extra flags to NotifyMotionArgs for
certain types of input events.
Test: atest inputflinger_tests

Change-Id: I2f390dc69f587ea25a3be8e4b8d5a207a5d529bf

1 files changed, 2 insertions, 1 deletions

diff --git a/services/inputflinger/InputManager.cpp b/services/inputflinger/InputManager.cpp
index 1d7ea00e0c..b3b9e3e101 100644
--- a/services/inputflinger/InputManager.cpp
+++ b/services/inputflinger/InputManager.cpp
@@ -34,7 +34,8 @@ InputManager::InputManager(
         const sp<InputReaderPolicyInterface>& readerPolicy,
         const sp<InputDispatcherPolicyInterface>& dispatcherPolicy) {
     mDispatcher = new InputDispatcher(dispatcherPolicy);
-    mReader = createInputReader(readerPolicy, mDispatcher);
+    mClassifier = new InputClassifier(mDispatcher);
+    mReader = createInputReader(readerPolicy, mClassifier);
     initialize();
 }