RequestArcAction.java revision 61f4fbd2e8436a1ecd478c2a1f516d064a24d43b
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; 20 21import android.util.Slog; 22 23/** 24 * Base feature action class for <Request ARC Initiation>/<Request ARC Termination>. 25 */ 26abstract class RequestArcAction extends FeatureAction { 27 private static final String TAG = "RequestArcAction"; 28 29 // State in which waits for ARC response. 30 protected static final int STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE = 1; 31 32 // Logical address of AV Receiver. 33 protected final int mAvrAddress; 34 35 /** 36 * @Constructor 37 * 38 * @param source {@link HdmiCecLocalDevice} instance 39 * @param avrAddress address of AV receiver. It should be AUDIO_SYSTEM type 40 * @throw IllegalArugmentException if device type of sourceAddress and avrAddress 41 * is invalid 42 */ 43 RequestArcAction(HdmiCecLocalDevice source, int avrAddress) { 44 super(source); 45 HdmiUtils.verifyAddressType(getSourceAddress(), HdmiDeviceInfo.DEVICE_TV); 46 HdmiUtils.verifyAddressType(avrAddress, HdmiDeviceInfo.DEVICE_AUDIO_SYSTEM); 47 mAvrAddress = avrAddress; 48 } 49 50 @Override 51 boolean processCommand(HdmiCecMessage cmd) { 52 if (mState != STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE 53 || !HdmiUtils.checkCommandSource(cmd, mAvrAddress, TAG)) { 54 return false; 55 } 56 int opcode = cmd.getOpcode(); 57 switch (opcode) { 58 // Handles only <Feature Abort> here and, both <Initiate ARC> and <Terminate ARC> 59 // are handled in HdmiControlService itself because both can be 60 // received wihtout <Request ARC Initiation> or <Request ARC Termination>. 61 case Constants.MESSAGE_FEATURE_ABORT: 62 disableArcTransmission(); 63 finish(); 64 return true; 65 default: 66 Slog.w(TAG, "Unsupported opcode:" + cmd.toString()); 67 } 68 return false; 69 } 70 71 protected final void disableArcTransmission() { 72 // Start Set ARC Transmission State action. 73 SetArcTransmissionStateAction action = new SetArcTransmissionStateAction(localDevice(), 74 mAvrAddress, false); 75 addAndStartAction(action); 76 } 77 78 @Override 79 final void handleTimerEvent(int state) { 80 if (mState != state || state != STATE_WATING_FOR_REQUEST_ARC_REQUEST_RESPONSE) { 81 return; 82 } 83 disableArcTransmission(); 84 finish(); 85 } 86} 87