1 /* 2 * Copyright 2020 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 /* 18 * Defines the native interface that is used by state machine/service to 19 * send or receive messages from the native stack. This file is registered 20 * for the native methods in the corresponding JNI C++ file. 21 */ 22 package com.android.bluetooth.btservice.activityattribution; 23 24 import android.util.Log; 25 26 import com.android.internal.annotations.GuardedBy; 27 28 import java.util.Arrays; 29 30 /** ActivityAttribution Native Interface to/from JNI. */ 31 public class ActivityAttributionNativeInterface { 32 private static final boolean DBG = false; 33 private static final String TAG = "ActivityAttributionNativeInterface"; 34 35 @GuardedBy("INSTANCE_LOCK") 36 private static ActivityAttributionNativeInterface sInstance; 37 38 private static final Object INSTANCE_LOCK = new Object(); 39 40 static { classInitNative()41 classInitNative(); 42 } 43 44 /** Get singleton instance. */ getInstance()45 public static ActivityAttributionNativeInterface getInstance() { 46 synchronized (INSTANCE_LOCK) { 47 if (sInstance == null) { 48 sInstance = new ActivityAttributionNativeInterface(); 49 } 50 return sInstance; 51 } 52 } 53 54 /** Initializes the native interface. */ init()55 public void init() { 56 initNative(); 57 } 58 59 /** Cleanup the native interface. */ cleanup()60 public void cleanup() { 61 cleanupNative(); 62 } 63 64 /** Notify the UID and package name of the app, and the address of associated active device */ notifyActivityAttributionInfo(int uid, String packageName, String deviceAddress)65 public void notifyActivityAttributionInfo(int uid, String packageName, String deviceAddress) { 66 notifyActivityAttributionInfoNative(uid, packageName, deviceAddress); 67 } 68 69 // Callbacks from the native stack back into the Java framework. 70 // All callbacks are routed via the Service which will disambiguate which 71 // state machine the message should be routed to. 72 onWakeup(int activity, byte[] address)73 private void onWakeup(int activity, byte[] address) { 74 Log.i(TAG, "onWakeup() BTAA: " + activity); 75 } 76 onActivityLogsReady(byte[] logs)77 private void onActivityLogsReady(byte[] logs) { 78 Log.i(TAG, "onActivityLogsReady() BTAA: " + Arrays.toString(logs)); 79 } 80 81 // Native methods that call into the JNI interface classInitNative()82 private static native void classInitNative(); 83 initNative()84 private native void initNative(); 85 cleanupNative()86 private native void cleanupNative(); 87 notifyActivityAttributionInfoNative( int uid, String packageName, String deviceAddress)88 private native void notifyActivityAttributionInfoNative( 89 int uid, String packageName, String deviceAddress); 90 } 91