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.HdmiControlManager;
  import android.hardware.hdmi.IHdmiControlCallback;
  
  /**
   * Feature action that handles System Audio initiated by AVR devices.
   */
  // Seq #33
  final class SystemAudioActionFromAvr extends SystemAudioAction {
      /**
       * Constructor
       *
       * @param source {@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 and avrAddress is invalid
       */
      SystemAudioActionFromAvr(HdmiCecLocalDevice source, int avrAddress,
              boolean targetStatus, IHdmiControlCallback callback) {
          super(source, avrAddress, targetStatus, callback);
          HdmiUtils.verifyAddressType(getSourceAddress(), HdmiDeviceInfo.DEVICE_TV);
      }
  
      @Override
      boolean start() {
          removeSystemAudioActionInProgress();
          handleSystemAudioActionFromAvr();
          return true;
      }
  
      private void handleSystemAudioActionFromAvr() {
          if (mTargetAudioStatus == tv().isSystemAudioActivated()) {
              finishWithCallback(HdmiControlManager.RESULT_SUCCESS);
              return;
          }
          if (tv().isProhibitMode()) {
              sendCommand(HdmiCecMessageBuilder.buildFeatureAbortCommand(
                      getSourceAddress(), mAvrLogicalAddress,
                      Constants.MESSAGE_SET_SYSTEM_AUDIO_MODE, Constants.ABORT_REFUSED));
              mTargetAudioStatus = false;
              sendSystemAudioModeRequest();
              return;
          }
  
          removeAction(SystemAudioAutoInitiationAction.class);
  
          if (mTargetAudioStatus) {
              setSystemAudioMode(true);
              startAudioStatusAction();
          } else {
              setSystemAudioMode(false);
              finishWithCallback(HdmiControlManager.RESULT_SUCCESS);
          }
      }
  }
  