services/core/java/com/android/server/hdmi/RequestArcInitiationAction.java

/*
 * Copyright (C) 2014 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 com.android.server.hdmi;

/**
 * Feature action that handles ARC action initiated by TV devices.
 *
 * <p>This action is created by TV's hot plug event of ARC port.
 */
final class RequestArcInitiationAction extends RequestArcAction {
    private static final String TAG = "RequestArcInitiationAction";

    /**
     * @Constructor
     *
     * For more details look at {@link RequestArcAction#RequestArcAction}.
     */
    RequestArcInitiationAction(HdmiCecLocalDevice source, int avrAddress) {
        super(source, avrAddress);
    }

    @Override
    boolean start() {
        // Seq #38
        mState = STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE;
        addTimer(mState, HdmiConfig.TIMEOUT_MS);

        HdmiCecMessage command = HdmiCecMessageBuilder.buildRequestArcInitiation(
                getSourceAddress(), mAvrAddress);
        sendCommand(command, new HdmiControlService.SendMessageCallback() {
            @Override
            public void onSendCompleted(int error) {
                if (error != Constants.SEND_RESULT_SUCCESS) {
                    // Turn off ARC status if <Request ARC Initiation> fails.
                    tv().setArcStatus(false);
                    finish();
                }
            }
        });
        return true;
    }
}