1 files changed, 160 insertions, 0 deletions
diff --git a/core/java/android/view/VerifiedInputEvent.java b/core/java/android/view/VerifiedInputEvent.java
new file mode 100644
index 000000000000..e2db50165f77
--- /dev/null
+++ b/core/java/android/view/VerifiedInputEvent.java
@@ -0,0 +1,160 @@
+/*
+ * Copyright (C) 2020 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.
+ */
+
+package android.view;
+
+import static java.lang.annotation.RetentionPolicy.SOURCE;
+
+import android.annotation.IntDef;
+import android.annotation.NonNull;
+import android.annotation.SuppressLint;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.lang.annotation.Retention;
+
+
+/**
+ * Base class for verified events.
+ * Verified events contain the subset of an InputEvent that the system can verify.
+ * Data contained inside VerifiedInputEvent's should be considered trusted and contain only
+ * the original event data that first came from the system.
+ *
+ * @see android.hardware.input.InputManager#verifyInputEvent(InputEvent)
+ */
+@SuppressLint("ParcelNotFinal")
+public abstract class VerifiedInputEvent implements Parcelable {
+    private static final String TAG = "VerifiedInputEvent";
+
+    /** @hide */
+    protected static final int VERIFIED_KEY = 1;
+    /** @hide */
+    protected static final int VERIFIED_MOTION = 2;
+
+    /** @hide */
+    @Retention(SOURCE)
+    @IntDef(prefix = "VERIFIED", value = {VERIFIED_KEY, VERIFIED_MOTION})
+    public @interface VerifiedInputEventType {};
+
+    @VerifiedInputEventType
+    private int mType;
+
+    private int mDeviceId;
+    private long mEventTimeNanos;
+    private int mSource;
+    private int mDisplayId;
+
+    /** @hide */
+    protected VerifiedInputEvent(int type, int deviceId, long eventTimeNanos, int source,
+            int displayId) {
+        mType = type;
+        mDeviceId = deviceId;
+        mEventTimeNanos = eventTimeNanos;
+        mSource = source;
+        mDisplayId = displayId;
+    }
+    /** @hide */
+    protected VerifiedInputEvent(@NonNull Parcel in, int expectedType) {
+        mType = in.readInt();
+        if (mType != expectedType) {
+            throw new IllegalArgumentException("Unexpected input event type token in parcel.");
+        }
+        mDeviceId = in.readInt();
+        mEventTimeNanos = in.readLong();
+        mSource = in.readInt();
+        mDisplayId = in.readInt();
+    }
+
+    /**
+     * Get the id of the device that generated this event.
+     *
+     * @see InputEvent#getDeviceId()
+     */
+    public int getDeviceId() {
+        return mDeviceId;
+    }
+
+    /**
+     * Get the time this event occurred, in the {@link android.os.SystemClock#uptimeMillis()}
+     * time base.
+     *
+     * @see InputEvent#getEventTime()
+     */
+    @SuppressLint("MethodNameUnits")
+    public long getEventTimeNanos() {
+        return mEventTimeNanos;
+    }
+
+    /**
+     * Get the source of the event.
+     *
+     * @see InputEvent#getSource()
+     */
+    public int getSource() {
+        return mSource;
+    }
+
+    /**
+     * Get the display id that is associated with this event.
+     *
+     * @see Display#getDisplayId()
+     */
+    public int getDisplayId() {
+        return mDisplayId;
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public void writeToParcel(@NonNull Parcel dest, int flags) {
+        dest.writeInt(mType);
+        dest.writeInt(mDeviceId);
+        dest.writeLong(mEventTimeNanos);
+        dest.writeInt(mSource);
+        dest.writeInt(mDisplayId);
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    private static int peekInt(@NonNull Parcel parcel) {
+        final int initialDataPosition = parcel.dataPosition();
+        int data = parcel.readInt();
+        parcel.setDataPosition(initialDataPosition);
+        return data;
+    }
+
+    public static final @NonNull Parcelable.Creator<VerifiedInputEvent> CREATOR =
+            new Parcelable.Creator<VerifiedInputEvent>() {
+        @Override
+        public VerifiedInputEvent[] newArray(int size) {
+            return new VerifiedInputEvent[size];
+        }
+
+        @Override
+        public VerifiedInputEvent createFromParcel(@NonNull Parcel in) {
+            final int type = peekInt(in);
+            if (type == VERIFIED_KEY) {
+                return VerifiedKeyEvent.CREATOR.createFromParcel(in);
+            } else if (type == VERIFIED_MOTION) {
+                return VerifiedMotionEvent.CREATOR.createFromParcel(in);
+            }
+            throw new IllegalArgumentException("Unexpected input event type in parcel.");
+        }
+    };
+}