| /* |
| * Copyright (C) 2018 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.tv.cec.V1_0.SendMessageResult; |
| |
| /** |
| * Feature action that handles Audio Return Channel initiated by AVR devices. |
| */ |
| public class ArcInitiationActionFromAvr extends HdmiCecFeatureAction { |
| // State in which waits for ARC response. |
| private static final int STATE_WAITING_FOR_INITIATE_ARC_RESPONSE = 1; |
| private static final int STATE_ARC_INITIATED = 2; |
| |
| // the required maximum response time specified in CEC 9.2 |
| private static final int TIMEOUT_MS = 1000; |
| private static final int MAX_RETRY_COUNT = 5; |
| |
| private int mSendRequestActiveSourceRetryCount = 0; |
| |
| ArcInitiationActionFromAvr(HdmiCecLocalDevice source) { |
| super(source); |
| } |
| |
| @Override |
| boolean start() { |
| audioSystem().setArcStatus(true); |
| mState = STATE_WAITING_FOR_INITIATE_ARC_RESPONSE; |
| addTimer(mState, TIMEOUT_MS); |
| sendInitiateArc(); |
| return true; |
| } |
| |
| @Override |
| boolean processCommand(HdmiCecMessage cmd) { |
| if (mState != STATE_WAITING_FOR_INITIATE_ARC_RESPONSE) { |
| return false; |
| } |
| switch (cmd.getOpcode()) { |
| case Constants.MESSAGE_FEATURE_ABORT: |
| case Constants.MESSAGE_REPORT_ARC_TERMINATED: |
| audioSystem().setArcStatus(false); |
| finish(); |
| return true; |
| case Constants.MESSAGE_REPORT_ARC_INITIATED: |
| mState = STATE_ARC_INITIATED; |
| if (audioSystem().getActiveSource().physicalAddress != getSourcePath() |
| && audioSystem().isSystemAudioActivated()) { |
| sendRequestActiveSource(); |
| } else { |
| finish(); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| void handleTimerEvent(int state) { |
| if (mState != state) { |
| return; |
| } |
| |
| switch (mState) { |
| case STATE_WAITING_FOR_INITIATE_ARC_RESPONSE: |
| handleInitiateArcTimeout(); |
| break; |
| } |
| } |
| |
| protected void sendInitiateArc() { |
| sendCommand(HdmiCecMessageBuilder.buildInitiateArc(getSourceAddress(), Constants.ADDR_TV), |
| result -> { |
| if (result != SendMessageResult.SUCCESS) { |
| audioSystem().setArcStatus(false); |
| finish(); |
| } |
| }); |
| } |
| |
| private void handleInitiateArcTimeout() { |
| HdmiLogger.debug("handleInitiateArcTimeout"); |
| audioSystem().setArcStatus(false); |
| finish(); |
| } |
| |
| protected void sendRequestActiveSource() { |
| sendCommand(HdmiCecMessageBuilder.buildRequestActiveSource(getSourceAddress()), |
| result -> { |
| if (result != SendMessageResult.SUCCESS) { |
| if (mSendRequestActiveSourceRetryCount < MAX_RETRY_COUNT) { |
| mSendRequestActiveSourceRetryCount++; |
| sendRequestActiveSource(); |
| } else { |
| finish(); |
| } |
| } else { |
| finish(); |
| } |
| }); |
| } |
| } |