| /* |
| * Copyright (C) 2016 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 android.hardware.location; |
| |
| import android.app.Service; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.os.IBinder; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| |
| /** |
| * @hide |
| */ |
| public class ContextHubService extends Service { |
| |
| private static final String TAG = "ContextHubService"; |
| private static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); |
| |
| private static ContextHubService sSingletonInstance; |
| private static final Object sSingletonInstanceLock = new Object(); |
| |
| private HashMap<Integer, ContextHubInfo> mHubHash; |
| private HashMap<Integer, NanoAppInstanceInfo> mNanoAppHash; |
| private ContextHubInfo[] mContexthubInfo; |
| |
| |
| private native int nativeSendMessage(int[] header, byte[] data); |
| private native ContextHubInfo[] nativeInitialize(); |
| |
| private int onMessageReceipt(int[] header, byte[] data) { |
| return 0; |
| } |
| private void initialize() { |
| mContexthubInfo = nativeInitialize(); |
| |
| mHubHash = new HashMap<Integer, ContextHubInfo>(); |
| |
| for (int i = 0; i < mContexthubInfo.length; i++) { |
| mHubHash.put(i + 1, mContexthubInfo[i]); // Avoiding zero |
| } |
| } |
| |
| private ContextHubService(Context context) { |
| initialize(); |
| Log.d(TAG, "Created from " + context.toString()); |
| } |
| |
| public static ContextHubService getInstance(Context context) { |
| synchronized (sSingletonInstanceLock) { |
| if (sSingletonInstance == null) { |
| sSingletonInstance = new ContextHubService(context); |
| } |
| return sSingletonInstance; |
| } |
| } |
| |
| @Override |
| public void onCreate() { |
| super.onCreate(); |
| } |
| |
| @Override |
| public IBinder onBind(Intent intent) { |
| return null; |
| } |
| |
| private final IContextHubService.Stub mBinder = new IContextHubService.Stub() { |
| |
| private IContextHubCallback callback; |
| |
| @Override |
| public int registerCallBack(IContextHubCallback callback) throws RemoteException{ |
| this.callback = callback; |
| return 0; |
| } |
| |
| @Override |
| public int[] getContextHubHandles() throws RemoteException { |
| int [] returnArray = new int[mHubHash.size()]; |
| int i = 0; |
| for (int key : mHubHash.keySet()) { |
| // Add any filtering here |
| returnArray[i] = key; |
| i++; |
| } |
| return returnArray; |
| } |
| |
| @Override |
| public ContextHubInfo getContextHubInfo(int contexthubHandle) throws RemoteException { |
| return mHubHash.get(contexthubHandle); |
| } |
| |
| @Override |
| public int loadNanoApp(int hubHandle, NanoApp app) throws RemoteException { |
| if (!mHubHash.containsKey(hubHandle)) { |
| return -1; |
| } else { |
| // Call Native interface here |
| int[] msgHeader = new int[8]; |
| msgHeader[0] = ContextHubManager.MSG_LOAD_NANO_APP; |
| msgHeader[1] = app.getAppId(); |
| msgHeader[2] = app.getAppVersion(); |
| msgHeader[3] = 0; // LOADING_HINTS |
| msgHeader[4] = hubHandle; |
| |
| int handle = nativeSendMessage(msgHeader, app.getAppBinary()); |
| |
| // if successful, add an entry to mNanoAppHash |
| |
| if(handle > 0) { |
| return 0; |
| } else { |
| |
| return -1; |
| } |
| } |
| } |
| |
| @Override |
| public int unloadNanoApp(int nanoAppInstanceHandle) throws RemoteException { |
| if(!mNanoAppHash.containsKey(nanoAppInstanceHandle)) { |
| return -1; |
| } else { |
| NanoAppInstanceInfo info = mNanoAppHash.get(nanoAppInstanceHandle); |
| // Call Native interface here |
| int[] msgHeader = new int[8]; |
| msgHeader[0] = ContextHubManager.MSG_UNLOAD_NANO_APP; |
| msgHeader[1] = info.getContexthubId(); |
| msgHeader[2] = info.getHandle(); |
| |
| int result = nativeSendMessage(msgHeader, null); |
| // if successful, remove the entry in mNanoAppHash |
| if(result == 0) { |
| mNanoAppHash.remove(nanoAppInstanceHandle); |
| } |
| return(result); |
| } |
| } |
| |
| @Override |
| public NanoAppInstanceInfo getNanoAppInstanceInfo(int nanoAppInstanceHandle) throws RemoteException { |
| // This assumes that all the nanoAppInfo is current. This is reasonable |
| // for the use cases for tightly controlled nanoApps. |
| // |
| if(!mNanoAppHash.containsKey(nanoAppInstanceHandle)) { |
| return(mNanoAppHash.get(nanoAppInstanceHandle)); |
| } else { |
| return null; |
| } |
| } |
| |
| @Override |
| public int[] findNanoAppOnHub(int hubHandle, NanoAppFilter filter) throws RemoteException { |
| ArrayList<Integer> foundInstances = new ArrayList<Integer>(); |
| |
| for(Integer nanoAppInstance : mNanoAppHash.keySet()) { |
| NanoAppInstanceInfo info = mNanoAppHash.get(nanoAppInstance); |
| |
| if(filter.testMatch(info)){ |
| foundInstances.add(nanoAppInstance); |
| } |
| } |
| |
| int[] retArray = new int[foundInstances.size()]; |
| for (int i = 0; i < foundInstances.size(); i++) { |
| retArray[i] = foundInstances.get(i).intValue(); |
| } |
| |
| return retArray; |
| } |
| |
| @Override |
| public int sendMessage(int hubHandle, int nanoAppHandle, ContextHubMessage msg) throws RemoteException { |
| int[] msgHeader = new int[8]; |
| msgHeader[0] = ContextHubManager.MSG_DATA_SEND; |
| msgHeader[1] = hubHandle; |
| msgHeader[2] = nanoAppHandle; |
| msgHeader[3] = msg.getMsgType(); |
| msgHeader[4] = msg.getVersion(); |
| |
| return (nativeSendMessage(msgHeader, msg.getData())); |
| } |
| }; |
| } |