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;
  
  /**
   * Base feature action class for &lt;Request ARC Initiation&gt;/&lt;Request ARC Termination&gt;.
   */
  abstract class RequestArcAction extends HdmiCecFeatureAction {
      private static final String TAG = "RequestArcAction";
  
      // State in which waits for ARC response.
      protected static final int STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE = 1;
  
      // Logical address of AV Receiver.
      protected final int mAvrAddress;
  
      /**
       * @Constructor
       *
       * @param source {@link HdmiCecLocalDevice} instance
       * @param avrAddress address of AV receiver. It should be AUDIO_SYSTEM type
       * @throws IllegalArgumentException if device type of sourceAddress and avrAddress
       *                      is invalid
       */
      RequestArcAction(HdmiCecLocalDevice source, int avrAddress) {
          super(source);
          HdmiUtils.verifyAddressType(getSourceAddress(), HdmiDeviceInfo.DEVICE_TV);
          HdmiUtils.verifyAddressType(avrAddress, HdmiDeviceInfo.DEVICE_AUDIO_SYSTEM);
          mAvrAddress = avrAddress;
      }
  
      @Override
      boolean processCommand(HdmiCecMessage cmd) {
          if (mState != STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE
                  || !HdmiUtils.checkCommandSource(cmd, mAvrAddress, TAG)) {
              return false;
          }
          int opcode = cmd.getOpcode();
          switch (opcode) {
              // Handles only <Feature Abort> here and, both <Initiate ARC> and <Terminate ARC>
              // are handled in HdmiControlService itself because both can be
              // received without <Request ARC Initiation> or <Request ARC Termination>.
              case Constants.MESSAGE_FEATURE_ABORT:
                  int originalOpcode = cmd.getParams()[0] & 0xFF;
                  if (originalOpcode == Constants.MESSAGE_REQUEST_ARC_TERMINATION) {
                      disableArcTransmission();
                      finish();
                      return true;
                  } else if (originalOpcode == Constants.MESSAGE_REQUEST_ARC_INITIATION) {
                      tv().setArcStatus(false);
                      finish();
                      return true;
                  }
                  return false;
          }
          return false;
      }
  
      protected final void disableArcTransmission() {
          // Start Set ARC Transmission State action.
          SetArcTransmissionStateAction action = new SetArcTransmissionStateAction(localDevice(),
                  mAvrAddress, false);
          addAndStartAction(action);
      }
  
      @Override
      final void handleTimerEvent(int state) {
          if (mState != state || state != STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE) {
              return;
          }
          HdmiLogger.debug("[T] RequestArcAction.");
          disableArcTransmission();
          finish();
      }
  }
  