content: /*
   * 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;
  
  import android.hardware.hdmi.HdmiDeviceInfo;
  import android.hardware.hdmi.IHdmiControlCallback;
  
  
  /**
   * Feature action that handles System Audio initiated by TV devices.
   */
  final class SystemAudioActionFromTv extends SystemAudioAction {
  
      /**
       * Constructor
       *
       * @param sourceAddress {@link HdmiCecLocalDevice} instance
       * @param avrAddress logical address of AVR device
       * @param targetStatus Whether to enable the system audio mode or not
       * @param callback callback interface to be notified when it's done
       * @throws IllegalArgumentException if device type of tvAddress is invalid
       */
      SystemAudioActionFromTv(HdmiCecLocalDevice sourceAddress, int avrAddress,
              boolean targetStatus, IHdmiControlCallback callback) {
          super(sourceAddress, avrAddress, targetStatus, callback);
          HdmiUtils.verifyAddressType(getSourceAddress(), HdmiDeviceInfo.DEVICE_TV);
      }
  
      @Override
      boolean start() {
          removeSystemAudioActionInProgress();
          sendSystemAudioModeRequest();
          return true;
      }
  }
  