Home | History | Annotate | Download | only in hdmi 
      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 
     17 package com.android.server.hdmi;
     18 
     19 import android.hardware.hdmi.HdmiDeviceInfo;
     20 import android.hardware.hdmi.HdmiControlManager;
     21 import android.hardware.hdmi.IHdmiControlCallback;
     22 
     23 /**
     24  * Feature action that handles System Audio initiated by AVR devices.
     25  */
     26 // Seq #33
     27 final class SystemAudioActionFromAvr extends SystemAudioAction {
     28     /**
     29      * Constructor
     30      *
     31      * @param source {@link HdmiCecLocalDevice} instance
     32      * @param avrAddress logical address of AVR device
     33      * @param targetStatus Whether to enable the system audio mode or not
     34      * @param callback callback interface to be notified when it's done
     35      * @throw IllegalArugmentException if device type of tvAddress and avrAddress is invalid
     36      */
     37     SystemAudioActionFromAvr(HdmiCecLocalDevice source, int avrAddress,
     38             boolean targetStatus, IHdmiControlCallback callback) {
     39         super(source, avrAddress, targetStatus, callback);
     40         HdmiUtils.verifyAddressType(getSourceAddress(), HdmiDeviceInfo.DEVICE_TV);
     41     }
     42 
     43     @Override
     44     boolean start() {
     45         removeSystemAudioActionInProgress();
     46         handleSystemAudioActionFromAvr();
     47         return true;
     48     }
     49 
     50     private void handleSystemAudioActionFromAvr() {
     51         if (mTargetAudioStatus == tv().isSystemAudioActivated()) {
     52             finishWithCallback(HdmiControlManager.RESULT_SUCCESS);
     53             return;
     54         }
     55         if (tv().isProhibitMode()) {
     56             sendCommand(HdmiCecMessageBuilder.buildFeatureAbortCommand(
     57                     getSourceAddress(), mAvrLogicalAddress,
     58                     Constants.MESSAGE_SET_SYSTEM_AUDIO_MODE, Constants.ABORT_REFUSED));
     59             mTargetAudioStatus = false;
     60             sendSystemAudioModeRequest();
     61             return;
     62         }
     63 
     64         removeAction(SystemAudioAutoInitiationAction.class);
     65 
     66         if (mTargetAudioStatus) {
     67             setSystemAudioMode(true);
     68             startAudioStatusAction();
     69         } else {
     70             setSystemAudioMode(false);
     71             finishWithCallback(HdmiControlManager.RESULT_SUCCESS);
     72         }
     73     }
     74 }
     75