| /* |
| * 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.hdmi.HdmiControlManager; |
| import android.hardware.hdmi.HdmiPlaybackClient.OneTouchPlayCallback; |
| import android.hardware.hdmi.IHdmiControlCallback; |
| import android.os.RemoteException; |
| import android.util.Slog; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Feature action that performs one touch play against TV/Display device. This action is initiated |
| * via {@link android.hardware.hdmi.HdmiPlaybackClient#oneTouchPlay(OneTouchPlayCallback)} from the |
| * Android system working as playback device to turn on the TV, and switch the input. |
| * <p> |
| * Package-private, accessed by {@link HdmiControlService} only. |
| */ |
| final class OneTouchPlayAction extends HdmiCecFeatureAction { |
| private static final String TAG = "OneTouchPlayAction"; |
| |
| // State in which the action is waiting for <Report Power Status>. In normal situation |
| // source device can simply send <Text|Image View On> and <Active Source> in succession |
| // since the standard requires that the TV/Display should buffer the <Active Source> |
| // if the TV is brought of out standby state. |
| // |
| // But there are TV's that fail to buffer the <Active Source> while getting out of |
| // standby mode, and do not accept the command until their power status becomes 'ON'. |
| // For a workaround, we send <Give Device Power Status> commands periodically to make sure |
| // the device switches its status to 'ON'. Then we send additional <Active Source>. |
| private static final int STATE_WAITING_FOR_REPORT_POWER_STATUS = 1; |
| |
| // The maximum number of times we send <Give Device Power Status> before we give up. |
| // We wait up to RESPONSE_TIMEOUT_MS * LOOP_COUNTER_MAX = 20 seconds. |
| private static final int LOOP_COUNTER_MAX = 10; |
| |
| private final int mTargetAddress; |
| private final List<IHdmiControlCallback> mCallbacks = new ArrayList<>(); |
| |
| private int mPowerStatusCounter = 0; |
| |
| // Factory method. Ensures arguments are valid. |
| static OneTouchPlayAction create(HdmiCecLocalDeviceSource source, |
| int targetAddress, IHdmiControlCallback callback) { |
| if (source == null || callback == null) { |
| Slog.e(TAG, "Wrong arguments"); |
| return null; |
| } |
| return new OneTouchPlayAction(source, targetAddress, |
| callback); |
| } |
| |
| private OneTouchPlayAction(HdmiCecLocalDevice localDevice, int targetAddress, |
| IHdmiControlCallback callback) { |
| super(localDevice); |
| mTargetAddress = targetAddress; |
| addCallback(callback); |
| } |
| |
| @Override |
| boolean start() { |
| sendCommand(HdmiCecMessageBuilder.buildTextViewOn(getSourceAddress(), mTargetAddress)); |
| broadcastActiveSource(); |
| queryDevicePowerStatus(); |
| mState = STATE_WAITING_FOR_REPORT_POWER_STATUS; |
| addTimer(mState, HdmiConfig.TIMEOUT_MS); |
| return true; |
| } |
| |
| private void broadcastActiveSource() { |
| // Because only source device can create this action, it's safe to cast. |
| HdmiCecLocalDeviceSource source = source(); |
| source.mService.setAndBroadcastActiveSourceFromOneDeviceType( |
| mTargetAddress, getSourcePath()); |
| // Set local active port to HOME when One Touch Play. |
| // Active Port and Current Input are handled by the switch functionality device. |
| if (source.mService.audioSystem() != null) { |
| source = source.mService.audioSystem(); |
| } |
| source.setRoutingPort(Constants.CEC_SWITCH_HOME); |
| source.setLocalActivePort(Constants.CEC_SWITCH_HOME); |
| } |
| |
| private void queryDevicePowerStatus() { |
| sendCommand(HdmiCecMessageBuilder.buildGiveDevicePowerStatus(getSourceAddress(), |
| mTargetAddress)); |
| } |
| |
| @Override |
| boolean processCommand(HdmiCecMessage cmd) { |
| if (mState != STATE_WAITING_FOR_REPORT_POWER_STATUS |
| || mTargetAddress != cmd.getSource()) { |
| return false; |
| } |
| if (cmd.getOpcode() == Constants.MESSAGE_REPORT_POWER_STATUS) { |
| int status = cmd.getParams()[0]; |
| if (status == HdmiControlManager.POWER_STATUS_ON) { |
| broadcastActiveSource(); |
| invokeCallback(HdmiControlManager.RESULT_SUCCESS); |
| finish(); |
| } |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| void handleTimerEvent(int state) { |
| if (mState != state) { |
| return; |
| } |
| if (state == STATE_WAITING_FOR_REPORT_POWER_STATUS) { |
| if (mPowerStatusCounter++ < LOOP_COUNTER_MAX) { |
| queryDevicePowerStatus(); |
| addTimer(mState, HdmiConfig.TIMEOUT_MS); |
| } else { |
| // Couldn't wake up the TV for whatever reason. Report failure. |
| invokeCallback(HdmiControlManager.RESULT_TIMEOUT); |
| finish(); |
| } |
| } |
| } |
| |
| public void addCallback(IHdmiControlCallback callback) { |
| mCallbacks.add(callback); |
| } |
| |
| private void invokeCallback(int result) { |
| try { |
| for (IHdmiControlCallback callback : mCallbacks) { |
| callback.onComplete(result); |
| } |
| } catch (RemoteException e) { |
| Slog.e(TAG, "Callback failed:" + e); |
| } |
| } |
| } |