RequestArcAction.java revision 2e8f1b6399089626b4f0249427626ba6e63a62ef
1/* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.android.server.hdmi; 18 19import android.hardware.hdmi.HdmiDeviceInfo; 20import android.util.Slog; 21 22/** 23 * Base feature action class for <Request ARC Initiation>/<Request ARC Termination>. 24 */ 25abstract class RequestArcAction extends HdmiCecFeatureAction { 26 private static final String TAG = "RequestArcAction"; 27 28 // State in which waits for ARC response. 29 protected static final int STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE = 1; 30 31 // Logical address of AV Receiver. 32 protected final int mAvrAddress; 33 34 /** 35 * @Constructor 36 * 37 * @param source {@link HdmiCecLocalDevice} instance 38 * @param avrAddress address of AV receiver. It should be AUDIO_SYSTEM type 39 * @throw IllegalArugmentException if device type of sourceAddress and avrAddress 40 * is invalid 41 */ 42 RequestArcAction(HdmiCecLocalDevice source, int avrAddress) { 43 super(source); 44 HdmiUtils.verifyAddressType(getSourceAddress(), HdmiDeviceInfo.DEVICE_TV); 45 HdmiUtils.verifyAddressType(avrAddress, HdmiDeviceInfo.DEVICE_AUDIO_SYSTEM); 46 mAvrAddress = avrAddress; 47 } 48 49 @Override 50 boolean processCommand(HdmiCecMessage cmd) { 51 if (mState != STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE 52 || !HdmiUtils.checkCommandSource(cmd, mAvrAddress, TAG)) { 53 return false; 54 } 55 int opcode = cmd.getOpcode(); 56 switch (opcode) { 57 // Handles only <Feature Abort> here and, both <Initiate ARC> and <Terminate ARC> 58 // are handled in HdmiControlService itself because both can be 59 // received without <Request ARC Initiation> or <Request ARC Termination>. 60 case Constants.MESSAGE_FEATURE_ABORT: 61 int originalOpcode = cmd.getParams()[0] & 0xFF; 62 if (originalOpcode == Constants.MESSAGE_REQUEST_ARC_INITIATION 63 || originalOpcode == Constants.MESSAGE_REQUEST_ARC_TERMINATION) { 64 disableArcTransmission(); 65 finish(); 66 return true; 67 } else { 68 return false; 69 } 70 default: 71 Slog.w(TAG, "Unsupported opcode:" + cmd.toString()); 72 } 73 return false; 74 } 75 76 protected final void disableArcTransmission() { 77 // Start Set ARC Transmission State action. 78 SetArcTransmissionStateAction action = new SetArcTransmissionStateAction(localDevice(), 79 mAvrAddress, false); 80 addAndStartAction(action); 81 } 82 83 @Override 84 final void handleTimerEvent(int state) { 85 if (mState != state || state != STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE) { 86 return; 87 } 88 HdmiLogger.debug("[T]RequestArcAction."); 89 disableArcTransmission(); 90 finish(); 91 } 92} 93