From b56e92c4a63663cbadf9f5b7958f8e0521a8296e Mon Sep 17 00:00:00 2001
From: Prabir Pradhan <prabirmsp@google.com>
Date: Fri, 9 Jun 2023 23:40:37 +0000
Subject: Introduce PointerChoreographer stage in C++

PointerChoreographer will be the new inputflinger component responsible
for managing the pointer icons drawn on the screen.

In this CL, we set up the PointerChoreographer InputListener stage,
which will be created when the choreographer is enabled.

Bug: 293587049
Bug: 278783893
Test: adb shell setprop persist.input.enable_pointer_choreographer 1;
      boot
Change-Id: Ice610055ef7ffc44c7c3e1d3904715eabda31a86
---
 services/inputflinger/InputManager.cpp | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

(limited to 'services/inputflinger/InputManager.cpp')

diff --git a/services/inputflinger/InputManager.cpp b/services/inputflinger/InputManager.cpp
index 0733a1c7c6..0567a32550 100644
--- a/services/inputflinger/InputManager.cpp
+++ b/services/inputflinger/InputManager.cpp
@@ -38,6 +38,9 @@ namespace {
 const bool ENABLE_INPUT_DEVICE_USAGE_METRICS =
         sysprop::InputProperties::enable_input_device_usage_metrics().value_or(true);
 
+const bool ENABLE_POINTER_CHOREOGRAPHER =
+        sysprop::InputProperties::enable_pointer_choreographer().value_or(false);
+
 int32_t exceptionCodeFromStatusT(status_t status) {
     switch (status) {
         case OK:
@@ -113,12 +116,14 @@ std::shared_ptr<IInputFlingerRust> createInputFlingerRust() {
  * The event flow is via the "InputListener" interface, as follows:
  *   InputReader
  *     -> UnwantedInteractionBlocker
+ *     -> PointerChoreographer
  *     -> InputProcessor
  *     -> InputDeviceMetricsCollector
  *     -> InputDispatcher
  */
 InputManager::InputManager(const sp<InputReaderPolicyInterface>& readerPolicy,
-                           InputDispatcherPolicyInterface& dispatcherPolicy) {
+                           InputDispatcherPolicyInterface& dispatcherPolicy,
+                           PointerChoreographerPolicyInterface& choreographerPolicy) {
     mInputFlingerRust = createInputFlingerRust();
 
     mDispatcher = createInputDispatcher(dispatcherPolicy);
@@ -135,6 +140,13 @@ InputManager::InputManager(const sp<InputReaderPolicyInterface>& readerPolicy,
     mTracingStages.emplace_back(
             std::make_unique<TracedInputListener>("InputProcessor", *mProcessor));
 
+    if (ENABLE_POINTER_CHOREOGRAPHER) {
+        mChoreographer =
+                std::make_unique<PointerChoreographer>(*mTracingStages.back(), choreographerPolicy);
+        mTracingStages.emplace_back(
+                std::make_unique<TracedInputListener>("PointerChoreographer", *mChoreographer));
+    }
+
     mBlocker = std::make_unique<UnwantedInteractionBlocker>(*mTracingStages.back());
     mTracingStages.emplace_back(
             std::make_unique<TracedInputListener>("UnwantedInteractionBlocker", *mBlocker));
@@ -186,6 +198,10 @@ InputReaderInterface& InputManager::getReader() {
     return *mReader;
 }
 
+PointerChoreographerInterface& InputManager::getChoreographer() {
+    return *mChoreographer;
+}
+
 InputProcessorInterface& InputManager::getProcessor() {
     return *mProcessor;
 }
@@ -210,6 +226,10 @@ void InputManager::dump(std::string& dump) {
     dump += '\n';
     mBlocker->dump(dump);
     dump += '\n';
+    if (ENABLE_POINTER_CHOREOGRAPHER) {
+        mChoreographer->dump(dump);
+        dump += '\n';
+    }
     mProcessor->dump(dump);
     dump += '\n';
     if (ENABLE_INPUT_DEVICE_USAGE_METRICS) {
-- 
cgit v1.2.3-59-g8ed1b