graphics/composer/2.3/IComposerClient.hal

/*
 * Copyright (C) 2018 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.composer@2.3;

import @2.2::IComposerClient;
import @2.1::Display;
import @2.1::Error;

interface IComposerClient extends @2.2::IComposerClient {

    /**
     * Returns the port and data that describe a physical display. The port is
     * a unique number that identifies a physical connector (e.g. eDP, HDMI)
     * for display output. The data blob is parsed to determine its format,
     * typically EDID 1.3 as specified in VESA E-EDID Standard Release A
     * Revision 1.
     *
     * @param display is the display to query.
     * @return error is NONE upon success. Otherwise,
     *         BAD_DISPLAY when an invalid display handle was passed in.
     *         UNSUPPORTED when identification data is unavailable.
     * @return port is the connector to which the display is connected.
     * @return data is the EDID 1.3 blob identifying the display.
     */
    @callflow(next="*")
    getDisplayIdentificationData(Display display)
               generates (Error error,
                          uint8_t port,
                          vec<uint8_t> data);

};