1 files changed, 53 insertions, 0 deletions
diff --git a/include/input/KeyboardClassifier.h b/include/input/KeyboardClassifier.h
new file mode 100644
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+++ b/include/input/KeyboardClassifier.h
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2024 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 <android-base/result.h>
+#include <input/Input.h>
+#include <input/InputDevice.h>
+
+#include "rust/cxx.h"
+
+namespace android {
+
+namespace input {
+namespace keyboardClassifier {
+struct KeyboardClassifier;
+}
+} // namespace input
+
+/*
+ * Keyboard classifier to classify keyboard into alphabetic and non-alphabetic keyboards
+ */
+class KeyboardClassifier {
+public:
+    KeyboardClassifier();
+    /**
+     * Get the type of keyboard that the classifier currently believes the device to be.
+     */
+    KeyboardType getKeyboardType(DeviceId deviceId);
+    void notifyKeyboardChanged(DeviceId deviceId, const InputDeviceIdentifier& identifier,
+                               uint32_t deviceClasses);
+    void processKey(DeviceId deviceId, int32_t evdevCode, uint32_t metaState);
+
+private:
+    std::optional<rust::Box<android::input::keyboardClassifier::KeyboardClassifier>>
+            mRustClassifier;
+    std::unordered_map<DeviceId, KeyboardType> mKeyboardTypeMap;
+};
+
+} // namespace android