graphics/common/aidl/android/hardware/graphics/common/DisplayHotplugEvent.aidl

/**
 * 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.
 */

package android.hardware.graphics.common;

/**
 * Display hotplug events through onHotplugEvent callback.
 */
@VintfStability
@Backing(type="int")
enum DisplayHotplugEvent {
    /**
     * Display is successfully connected.
     * Connected may be called more than once and the behavior of subsequent
     * calls is that SurfaceFlinger queries the display properties again.
     */
    CONNECTED = 0,

    /** Display is successfully disconnected */
    DISCONNECTED = 1,

    /** Display is plugged in, but an unknown error occurred */
    ERROR_UNKNOWN = -1,

    /** Display is plugged in, but incompatible cable error detected */
    ERROR_INCOMPATIBLE_CABLE = -2,

    /**
     * Display is plugged in, but exceeds the max number of
     * displays that can be simultaneously connected
     */
    ERROR_TOO_MANY_DISPLAYS = -3,
}