diff --git a/include/input/VirtualInputDevice.h b/include/input/VirtualInputDevice.h
new file mode 100644
index 0000000..13ffb58
--- /dev/null
+++ b/include/input/VirtualInputDevice.h
@@ -0,0 +1,97 @@
+/*
+ * Copyright (C) 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 <android-base/unique_fd.h>
+
+namespace android {
+
+enum class UinputAction {
+    RELEASE = 0,
+    PRESS = 1,
+    MOVE = 2,
+    CANCEL = 3,
+};
+
+class VirtualInputDevice {
+public:
+    VirtualInputDevice(android::base::unique_fd fd);
+    virtual ~VirtualInputDevice();
+
+protected:
+    const android::base::unique_fd mFd;
+    bool writeInputEvent(uint16_t type, uint16_t code, int32_t value);
+    bool writeEvKeyEvent(int32_t androidCode, int32_t androidAction,
+                         const std::map<int, int>& evKeyCodeMapping,
+                         const std::map<int, UinputAction>& actionMapping);
+};
+
+class VirtualKeyboard : public VirtualInputDevice {
+public:
+    static const std::map<int, int> KEY_CODE_MAPPING;
+    // Expose to share with VirtualDpad.
+    static const std::map<int, UinputAction> KEY_ACTION_MAPPING;
+    VirtualKeyboard(android::base::unique_fd fd);
+    virtual ~VirtualKeyboard() override;
+    bool writeKeyEvent(int32_t androidKeyCode, int32_t androidAction);
+};
+
+class VirtualDpad : public VirtualInputDevice {
+public:
+    static const std::map<int, int> DPAD_KEY_CODE_MAPPING;
+    VirtualDpad(android::base::unique_fd fd);
+    virtual ~VirtualDpad() override;
+    bool writeDpadKeyEvent(int32_t androidKeyCode, int32_t androidAction);
+};
+
+class VirtualMouse : public VirtualInputDevice {
+public:
+    VirtualMouse(android::base::unique_fd fd);
+    virtual ~VirtualMouse() override;
+    bool writeButtonEvent(int32_t androidButtonCode, int32_t androidAction);
+    // TODO(b/259554911): changing float parameters to int32_t.
+    bool writeRelativeEvent(float relativeX, float relativeY);
+    bool writeScrollEvent(float xAxisMovement, float yAxisMovement);
+
+private:
+    static const std::map<int, UinputAction> BUTTON_ACTION_MAPPING;
+    static const std::map<int, int> BUTTON_CODE_MAPPING;
+};
+
+class VirtualTouchscreen : public VirtualInputDevice {
+public:
+    VirtualTouchscreen(android::base::unique_fd fd);
+    virtual ~VirtualTouchscreen() override;
+    // TODO(b/259554911): changing float parameters to int32_t.
+    bool writeTouchEvent(int32_t pointerId, int32_t toolType, int32_t action, float locationX,
+                         float locationY, float pressure, float majorAxisSize);
+
+private:
+    static const std::map<int, UinputAction> TOUCH_ACTION_MAPPING;
+    static const std::map<int, int> TOOL_TYPE_MAPPING;
+
+    /* The set of active touch pointers on this device.
+     * We only allow pointer id to go up to MAX_POINTERS because the maximum slots of virtual
+     * touchscreen is set up with MAX_POINTERS. Note that in other cases Android allows pointer id
+     * to go up to MAX_POINTERS_ID.
+     */
+    std::bitset<MAX_POINTERS> mActivePointers{};
+    bool isValidPointerId(int32_t pointerId, UinputAction uinputAction);
+    bool handleTouchDown(int32_t pointerId);
+    bool handleTouchUp(int32_t pointerId);
+};
+} // namespace android