SystemAudioAutoInitiationAction.java revision c516d65fd96cdc39f9935ddb80d26ee6499a77bf
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 com.android.server.hdmi.HdmiControlService.SendMessageCallback; 20 21/** 22 * Action to initiate system audio once AVR is detected on Device discovery action. 23 */ 24// Seq #27 25final class SystemAudioAutoInitiationAction extends FeatureAction { 26 private final int mAvrAddress; 27 28 // State that waits for <System Audio Mode Status> once send 29 // <Give System Audio Mode Status> to AV Receiver. 30 private static final int STATE_WAITING_FOR_SYSTEM_AUDIO_MODE_STATUS = 1; 31 32 SystemAudioAutoInitiationAction(HdmiCecLocalDevice source, int avrAddress) { 33 super(source); 34 mAvrAddress = avrAddress; 35 } 36 37 @Override 38 boolean start() { 39 mState = STATE_WAITING_FOR_SYSTEM_AUDIO_MODE_STATUS; 40 41 addTimer(mState, HdmiConfig.TIMEOUT_MS); 42 sendGiveSystemAudioModeStatus(); 43 return true; 44 } 45 46 private void sendGiveSystemAudioModeStatus() { 47 sendCommand(HdmiCecMessageBuilder.buildGiveSystemAudioModeStatus(getSourceAddress(), 48 mAvrAddress), new SendMessageCallback() { 49 @Override 50 public void onSendCompleted(int error) { 51 if (error != Constants.SEND_RESULT_SUCCESS) { 52 tv().setSystemAudioMode(false, true); 53 finish(); 54 } 55 } 56 }); 57 } 58 59 @Override 60 boolean processCommand(HdmiCecMessage cmd) { 61 if (mState != STATE_WAITING_FOR_SYSTEM_AUDIO_MODE_STATUS) { 62 return false; 63 } 64 65 switch (cmd.getOpcode()) { 66 case Constants.MESSAGE_SYSTEM_AUDIO_MODE_STATUS: 67 handleSystemAudioModeStatusMessage(); 68 return true; 69 default: 70 return false; 71 } 72 } 73 74 private void handleSystemAudioModeStatusMessage() { 75 // If the last setting is system audio, turn on system audio whatever AVR status is. 76 if (tv().getSystemAudioMode()) { 77 if (canChangeSystemAudio()) { 78 addAndStartAction(new SystemAudioActionFromTv(tv(), mAvrAddress, true, null)); 79 } 80 } else { 81 // If the last setting is non-system audio, turn off system audio mode 82 // and update system audio status (volume or mute). 83 tv().setSystemAudioMode(false, true); 84 if (canChangeSystemAudio()) { 85 addAndStartAction(new SystemAudioStatusAction(tv(), mAvrAddress, null)); 86 } 87 } 88 finish(); 89 } 90 91 @Override 92 void handleTimerEvent(int state) { 93 if (mState != state) { 94 return; 95 } 96 97 switch (mState) { 98 case STATE_WAITING_FOR_SYSTEM_AUDIO_MODE_STATUS: 99 handleSystemAudioModeStatusTimeout(); 100 break; 101 } 102 } 103 104 private void handleSystemAudioModeStatusTimeout() { 105 if (tv().getSystemAudioMode()) { 106 if (canChangeSystemAudio()) { 107 addAndStartAction(new SystemAudioActionFromTv(tv(), mAvrAddress, true, null)); 108 } 109 } else { 110 tv().setSystemAudioMode(false, true); 111 } 112 finish(); 113 } 114 115 private boolean canChangeSystemAudio() { 116 return !(tv().hasAction(SystemAudioActionFromTv.class) 117 || tv().hasAction(SystemAudioActionFromAvr.class)); 118 } 119} 120