Create JNI pipeline for touchpad gestures

Create JNI pipeline to send touchpad gesture types from native
code to display it in the TouchpadDebugView

Bug: 365562952
Test: Verified that the data flow works correctly and the method references are valid.
Flag: com.android.hardware.input.touchpad_visualizer
Change-Id: Ia318f0c7a8cfd359d25d2512ac02060b06b958bf
diff --git a/services/inputflinger/include/InputReaderBase.h b/services/inputflinger/include/InputReaderBase.h
index 7bec94e..69874c9 100644
--- a/services/inputflinger/include/InputReaderBase.h
+++ b/services/inputflinger/include/InputReaderBase.h
@@ -466,6 +466,9 @@
     virtual void notifyTouchpadHardwareState(const SelfContainedHardwareState& schs,
                                              int32_t deviceId) = 0;
 
+    /* Sends the Info of gestures that happen on the touchpad. */
+    virtual void notifyTouchpadGestureInfo(GestureType type, int32_t deviceId) = 0;
+
     /* Gets the keyboard layout for a particular input device. */
     virtual std::shared_ptr<KeyCharacterMap> getKeyboardLayoutOverlay(
             const InputDeviceIdentifier& identifier,
diff --git a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
index b17e79a..9a36bfb 100644
--- a/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
+++ b/services/inputflinger/reader/mapper/TouchpadInputMapper.cpp
@@ -480,6 +480,9 @@
         return;
     }
     mGesturesToProcess.push_back(*gesture);
+    if (mTouchpadHardwareStateNotificationsEnabled) {
+        getPolicy()->notifyTouchpadGestureInfo(gesture->type, getDeviceId());
+    }
 }
 
 std::list<NotifyArgs> TouchpadInputMapper::processGestures(nsecs_t when, nsecs_t readTime) {
diff --git a/services/inputflinger/tests/FakeInputReaderPolicy.cpp b/services/inputflinger/tests/FakeInputReaderPolicy.cpp
index e1f844c..f373cac 100644
--- a/services/inputflinger/tests/FakeInputReaderPolicy.cpp
+++ b/services/inputflinger/tests/FakeInputReaderPolicy.cpp
@@ -256,6 +256,10 @@
     mTouchpadHardwareStateNotified.notify_all();
 }
 
+void FakeInputReaderPolicy::notifyTouchpadGestureInfo(GestureType type, int32_t deviceId) {
+    std::scoped_lock lock(mLock);
+}
+
 std::shared_ptr<KeyCharacterMap> FakeInputReaderPolicy::getKeyboardLayoutOverlay(
         const InputDeviceIdentifier&, const std::optional<KeyboardLayoutInfo>) {
     return nullptr;
diff --git a/services/inputflinger/tests/FakeInputReaderPolicy.h b/services/inputflinger/tests/FakeInputReaderPolicy.h
index 61bb9fc..3a2b4e9 100644
--- a/services/inputflinger/tests/FakeInputReaderPolicy.h
+++ b/services/inputflinger/tests/FakeInputReaderPolicy.h
@@ -85,6 +85,7 @@
     void notifyInputDevicesChanged(const std::vector<InputDeviceInfo>& inputDevices) override;
     void notifyTouchpadHardwareState(const SelfContainedHardwareState& schs,
                                      int32_t deviceId) override;
+    void notifyTouchpadGestureInfo(GestureType type, int32_t deviceId) override;
     std::shared_ptr<KeyCharacterMap> getKeyboardLayoutOverlay(
             const InputDeviceIdentifier&, const std::optional<KeyboardLayoutInfo>) override;
     std::string getDeviceAlias(const InputDeviceIdentifier&) override;
diff --git a/services/inputflinger/tests/fuzzers/MapperHelpers.h b/services/inputflinger/tests/fuzzers/MapperHelpers.h
index ddc3310..7e362f4 100644
--- a/services/inputflinger/tests/fuzzers/MapperHelpers.h
+++ b/services/inputflinger/tests/fuzzers/MapperHelpers.h
@@ -283,6 +283,7 @@
     void notifyInputDevicesChanged(const std::vector<InputDeviceInfo>& inputDevices) override {}
     void notifyTouchpadHardwareState(const SelfContainedHardwareState& schs,
                                      int32_t deviceId) override {}
+    void notifyTouchpadGestureInfo(GestureType type, int32_t deviceId) override {}
     std::shared_ptr<KeyCharacterMap> getKeyboardLayoutOverlay(
             const InputDeviceIdentifier& identifier,
             const std::optional<KeyboardLayoutInfo> layoutInfo) override {