Arthur Ishiguro | 7a23a96 | 2017-11-01 10:52:28 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 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.location; |
| 18 | |
| 19 | import android.hardware.contexthub.V1_0.ContextHub; |
Arthur Ishiguro | 170611d | 2017-11-17 10:02:17 -0800 | [diff] [blame] | 20 | import android.hardware.contexthub.V1_0.ContextHubMsg; |
| 21 | import android.hardware.contexthub.V1_0.HostEndPoint; |
Arthur Ishiguro | 7a23a96 | 2017-11-01 10:52:28 -0700 | [diff] [blame] | 22 | import android.hardware.contexthub.V1_0.HubAppInfo; |
| 23 | import android.hardware.location.ContextHubInfo; |
| 24 | import android.hardware.location.NanoAppBinary; |
Arthur Ishiguro | 170611d | 2017-11-17 10:02:17 -0800 | [diff] [blame] | 25 | import android.hardware.location.NanoAppMessage; |
Arthur Ishiguro | 7a23a96 | 2017-11-01 10:52:28 -0700 | [diff] [blame] | 26 | import android.hardware.location.NanoAppState; |
| 27 | import android.util.Log; |
| 28 | |
| 29 | import java.util.List; |
| 30 | import java.util.ArrayList; |
| 31 | |
| 32 | /** |
| 33 | * A class encapsulating helper functions used by the ContextHubService class |
| 34 | */ |
| 35 | /* package */ class ContextHubServiceUtil { |
| 36 | private static final String TAG = "ContextHubServiceUtil"; |
| 37 | |
| 38 | /** |
| 39 | * Creates a ContextHubInfo array from an ArrayList of HIDL ContextHub objects. |
| 40 | * |
| 41 | * @param hubList the ContextHub ArrayList |
| 42 | * @return the ContextHubInfo array |
| 43 | */ |
| 44 | /* package */ |
| 45 | static ContextHubInfo[] createContextHubInfoArray(List<ContextHub> hubList) { |
| 46 | ContextHubInfo[] contextHubInfoList = new ContextHubInfo[hubList.size()]; |
| 47 | for (int i = 0; i < hubList.size(); i++) { |
| 48 | contextHubInfoList[i] = new ContextHubInfo(hubList.get(i)); |
| 49 | } |
| 50 | |
| 51 | return contextHubInfoList; |
| 52 | } |
| 53 | |
| 54 | /** |
| 55 | * Copies a primitive byte array to a ArrayList<Byte>. |
| 56 | * |
| 57 | * @param inputArray the primitive byte array |
| 58 | * @param outputArray the ArrayList<Byte> array to append |
| 59 | */ |
| 60 | /* package */ |
| 61 | static void copyToByteArrayList(byte[] inputArray, ArrayList<Byte> outputArray) { |
| 62 | outputArray.clear(); |
| 63 | outputArray.ensureCapacity(inputArray.length); |
| 64 | for (byte element : inputArray) { |
| 65 | outputArray.add(element); |
| 66 | } |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Creates a byte array given a ArrayList<Byte> and copies its contents. |
| 71 | * |
| 72 | * @param array the ArrayList<Byte> object |
| 73 | * @return the byte array |
| 74 | */ |
| 75 | /* package */ |
| 76 | static byte[] createPrimitiveByteArray(ArrayList<Byte> array) { |
| 77 | byte[] primitiveArray = new byte[array.size()]; |
| 78 | for (int i = 0; i < array.size(); i++) { |
| 79 | primitiveArray[i] = array.get(i); |
| 80 | } |
| 81 | |
| 82 | return primitiveArray; |
| 83 | } |
| 84 | |
| 85 | /** |
| 86 | * Generates the Context Hub HAL's NanoAppBinary object from the client-facing |
| 87 | * android.hardware.location.NanoAppBinary object. |
| 88 | * |
| 89 | * @param nanoAppBinary the client-facing NanoAppBinary object |
| 90 | * @return the Context Hub HAL's NanoAppBinary object |
| 91 | */ |
| 92 | /* package */ |
| 93 | static android.hardware.contexthub.V1_0.NanoAppBinary createHidlNanoAppBinary( |
| 94 | NanoAppBinary nanoAppBinary) { |
| 95 | android.hardware.contexthub.V1_0.NanoAppBinary hidlNanoAppBinary = |
| 96 | new android.hardware.contexthub.V1_0.NanoAppBinary(); |
| 97 | |
| 98 | hidlNanoAppBinary.appId = nanoAppBinary.getNanoAppId(); |
| 99 | hidlNanoAppBinary.appVersion = nanoAppBinary.getNanoAppVersion(); |
| 100 | hidlNanoAppBinary.flags = nanoAppBinary.getFlags(); |
| 101 | hidlNanoAppBinary.targetChreApiMajorVersion = nanoAppBinary.getTargetChreApiMajorVersion(); |
| 102 | hidlNanoAppBinary.targetChreApiMinorVersion = nanoAppBinary.getTargetChreApiMinorVersion(); |
| 103 | |
| 104 | // Log exceptions while processing the binary, but continue to pass down the binary |
| 105 | // since the error checking is deferred to the Context Hub. |
| 106 | try { |
| 107 | copyToByteArrayList(nanoAppBinary.getBinaryNoHeader(), hidlNanoAppBinary.customBinary); |
| 108 | } catch (IndexOutOfBoundsException e) { |
| 109 | Log.w(TAG, e.getMessage()); |
| 110 | } catch (NullPointerException e) { |
| 111 | Log.w(TAG, "NanoApp binary was null"); |
| 112 | } |
| 113 | |
| 114 | return hidlNanoAppBinary; |
| 115 | } |
| 116 | |
| 117 | /** |
| 118 | * Generates a client-facing NanoAppState array from a HAL HubAppInfo array. |
| 119 | * |
| 120 | * @param nanoAppInfoList the array of HubAppInfo objects |
| 121 | * @return the corresponding array of NanoAppState objects |
| 122 | */ |
| 123 | /* package */ |
| 124 | static List<NanoAppState> createNanoAppStateList( |
| 125 | List<HubAppInfo> nanoAppInfoList) { |
| 126 | ArrayList<NanoAppState> nanoAppStateList = new ArrayList<>(); |
| 127 | for (HubAppInfo appInfo : nanoAppInfoList) { |
| 128 | nanoAppStateList.add( |
| 129 | new NanoAppState(appInfo.appId, appInfo.version, appInfo.enabled)); |
| 130 | } |
| 131 | |
| 132 | return nanoAppStateList; |
| 133 | } |
Arthur Ishiguro | 170611d | 2017-11-17 10:02:17 -0800 | [diff] [blame] | 134 | |
| 135 | /** |
| 136 | * Creates a HIDL ContextHubMsg object to send to a nanoapp. |
| 137 | * |
| 138 | * @param hostEndPoint the ID of the client sending the message |
| 139 | * @param message the client-facing NanoAppMessage object describing the message |
| 140 | * @return the HIDL ContextHubMsg object |
| 141 | */ |
| 142 | /* package */ |
| 143 | static ContextHubMsg createHidlContextHubMessage(short hostEndPoint, NanoAppMessage message) { |
| 144 | ContextHubMsg hidlMessage = new ContextHubMsg(); |
| 145 | |
| 146 | hidlMessage.appName = message.getNanoAppId(); |
| 147 | hidlMessage.hostEndPoint = hostEndPoint; |
| 148 | hidlMessage.msgType = message.getMessageType(); |
| 149 | copyToByteArrayList(message.getMessageBody(), hidlMessage.msg); |
| 150 | |
| 151 | return hidlMessage; |
| 152 | } |
| 153 | |
| 154 | /** |
| 155 | * Creates a client-facing NanoAppMessage object to send to a client. |
| 156 | * |
| 157 | * @param message the HIDL ContextHubMsg object from a nanoapp |
| 158 | * @return the NanoAppMessage object |
| 159 | */ |
| 160 | /* package */ |
| 161 | static NanoAppMessage createNanoAppMessage(ContextHubMsg message) { |
| 162 | byte[] messageArray = createPrimitiveByteArray(message.msg); |
| 163 | |
| 164 | return NanoAppMessage.createMessageFromNanoApp( |
| 165 | message.appName, message.msgType, messageArray, |
| 166 | message.hostEndPoint == HostEndPoint.BROADCAST); |
| 167 | } |
Arthur Ishiguro | 7a23a96 | 2017-11-01 10:52:28 -0700 | [diff] [blame] | 168 | } |