| /* |
| * 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.tv.cec.V1_0.SendMessageResult; |
| import com.android.server.hdmi.HdmiControlService.SendMessageCallback; |
| |
| /** |
| * Action to initiate system audio once AVR is detected on Device discovery action. |
| */ |
| // Seq #27 |
| final class SystemAudioAutoInitiationAction extends HdmiCecFeatureAction { |
| private final int mAvrAddress; |
| |
| // State that waits for <System Audio Mode Status> once send |
| // <Give System Audio Mode Status> to AV Receiver. |
| private static final int STATE_WAITING_FOR_SYSTEM_AUDIO_MODE_STATUS = 1; |
| |
| SystemAudioAutoInitiationAction(HdmiCecLocalDevice source, int avrAddress) { |
| super(source); |
| mAvrAddress = avrAddress; |
| } |
| |
| @Override |
| boolean start() { |
| mState = STATE_WAITING_FOR_SYSTEM_AUDIO_MODE_STATUS; |
| |
| addTimer(mState, HdmiConfig.TIMEOUT_MS); |
| sendGiveSystemAudioModeStatus(); |
| return true; |
| } |
| |
| private void sendGiveSystemAudioModeStatus() { |
| sendCommand(HdmiCecMessageBuilder.buildGiveSystemAudioModeStatus(getSourceAddress(), |
| mAvrAddress), new SendMessageCallback() { |
| @Override |
| public void onSendCompleted(int error) { |
| if (error != SendMessageResult.SUCCESS) { |
| tv().setSystemAudioMode(false); |
| finish(); |
| } |
| } |
| }); |
| } |
| |
| @Override |
| boolean processCommand(HdmiCecMessage cmd) { |
| if (mState != STATE_WAITING_FOR_SYSTEM_AUDIO_MODE_STATUS |
| || mAvrAddress != cmd.getSource()) { |
| return false; |
| } |
| |
| if (cmd.getOpcode() == Constants.MESSAGE_SYSTEM_AUDIO_MODE_STATUS) { |
| handleSystemAudioModeStatusMessage(HdmiUtils.parseCommandParamSystemAudioStatus(cmd)); |
| return true; |
| } |
| return false; |
| } |
| |
| private void handleSystemAudioModeStatusMessage(boolean currentSystemAudioMode) { |
| if (!canChangeSystemAudio()) { |
| HdmiLogger.debug("Cannot change system audio mode in auto initiation action."); |
| finish(); |
| return; |
| } |
| |
| // If System Audio Control feature is enabled, turn on system audio mode when new AVR is |
| // detected. Otherwise, turn off system audio mode. |
| boolean targetSystemAudioMode = tv().isSystemAudioControlFeatureEnabled(); |
| if (currentSystemAudioMode != targetSystemAudioMode) { |
| // Start System Audio Control feature actions only if necessary. |
| addAndStartAction( |
| new SystemAudioActionFromTv(tv(), mAvrAddress, targetSystemAudioMode, null)); |
| } else { |
| // If AVR already has correct system audio mode, update target system audio mode |
| // immediately rather than starting feature action. |
| tv().setSystemAudioMode(targetSystemAudioMode); |
| } |
| finish(); |
| } |
| |
| @Override |
| void handleTimerEvent(int state) { |
| if (mState != state) { |
| return; |
| } |
| |
| switch (mState) { |
| case STATE_WAITING_FOR_SYSTEM_AUDIO_MODE_STATUS: |
| handleSystemAudioModeStatusTimeout(); |
| break; |
| } |
| } |
| |
| private void handleSystemAudioModeStatusTimeout() { |
| if (!canChangeSystemAudio()) { |
| HdmiLogger.debug("Cannot change system audio mode in auto initiation action."); |
| finish(); |
| return; |
| } |
| // If we can't get the current system audio mode status, just try to turn on/off system |
| // audio mode according to the system audio control setting. |
| addAndStartAction(new SystemAudioActionFromTv(tv(), mAvrAddress, |
| tv().isSystemAudioControlFeatureEnabled(), null)); |
| finish(); |
| } |
| |
| private boolean canChangeSystemAudio() { |
| return !(tv().hasAction(SystemAudioActionFromTv.class) |
| || tv().hasAction(SystemAudioActionFromAvr.class)); |
| } |
| } |