Introduce the InputDeviceMetricsCollector stage
Bug: 275726706
Test: Build
Test: adb shell setprop persist.debug.input.enable_input_device_usage_metrics 1
Change-Id: Ie0c19f220c077c9d46df34787fed72cef70eace2
diff --git a/services/inputflinger/InputDeviceMetricsCollector.h b/services/inputflinger/InputDeviceMetricsCollector.h
new file mode 100644
index 0000000..c959075
--- /dev/null
+++ b/services/inputflinger/InputDeviceMetricsCollector.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include "InputListener.h"
+
+namespace android {
+
+/**
+ * Logs metrics about registered input devices and their usages.
+ *
+ * Not thread safe. Must be called from a single thread.
+ */
+class InputDeviceMetricsCollectorInterface : public InputListenerInterface {
+public:
+ /**
+ * Dump the state of the interaction blocker.
+ * This method may be called on any thread (usually by the input manager on a binder thread).
+ */
+ virtual void dump(std::string& dump) = 0;
+};
+
+class InputDeviceMetricsCollector : public InputDeviceMetricsCollectorInterface {
+public:
+ explicit InputDeviceMetricsCollector(InputListenerInterface& listener);
+ ~InputDeviceMetricsCollector() override = default;
+
+ void notifyInputDevicesChanged(const NotifyInputDevicesChangedArgs& args) override;
+ void notifyConfigurationChanged(const NotifyConfigurationChangedArgs& args) override;
+ void notifyKey(const NotifyKeyArgs& args) override;
+ void notifyMotion(const NotifyMotionArgs& args) override;
+ void notifySwitch(const NotifySwitchArgs& args) override;
+ void notifySensor(const NotifySensorArgs& args) override;
+ void notifyVibratorState(const NotifyVibratorStateArgs& args) override;
+ void notifyDeviceReset(const NotifyDeviceResetArgs& args) override;
+ void notifyPointerCaptureChanged(const NotifyPointerCaptureChangedArgs& args) override;
+
+ void dump(std::string& dump) override;
+
+private:
+ InputListenerInterface& mNextListener;
+};
+
+} // namespace android