1 /* 2 * Copyright (C) 2024 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.bluetooth.btservice; 18 19 import com.android.internal.annotations.GuardedBy; 20 import com.android.internal.annotations.VisibleForTesting; 21 22 public class BluetoothHciVendorSpecificNativeInterface { 23 private static final String TAG = 24 BluetoothHciVendorSpecificNativeInterface.class.getSimpleName(); 25 26 @GuardedBy("INSTANCE_LOCK") 27 private static BluetoothHciVendorSpecificNativeInterface sInstance; 28 29 private static final Object INSTANCE_LOCK = new Object(); 30 31 /** Get singleton instance. */ getInstance()32 public static BluetoothHciVendorSpecificNativeInterface getInstance() { 33 synchronized (INSTANCE_LOCK) { 34 if (sInstance == null) { 35 sInstance = new BluetoothHciVendorSpecificNativeInterface(); 36 } 37 return sInstance; 38 } 39 } 40 41 /** Set singleton instance. */ 42 @VisibleForTesting setInstance(BluetoothHciVendorSpecificNativeInterface instance)43 static void setInstance(BluetoothHciVendorSpecificNativeInterface instance) { 44 synchronized (INSTANCE_LOCK) { 45 sInstance = instance; 46 } 47 } 48 49 private BluetoothHciVendorSpecificDispatcher mDispatcher; 50 init(BluetoothHciVendorSpecificDispatcher dispatcher)51 void init(BluetoothHciVendorSpecificDispatcher dispatcher) { 52 mDispatcher = dispatcher; 53 initNative(); 54 } 55 cleanup()56 void cleanup() { 57 cleanupNative(); 58 } 59 sendCommand(int ocf, byte[] parameters, byte[] cookie)60 void sendCommand(int ocf, byte[] parameters, byte[] cookie) { 61 sendCommandNative(ocf, parameters, cookie); 62 } 63 64 // Callbacks from the native stack 65 onCommandStatus(int ocf, int status, byte[] cookie)66 private void onCommandStatus(int ocf, int status, byte[] cookie) { 67 mDispatcher.dispatchCommandStatusOrComplete( 68 cookie, (cb) -> cb.onCommandStatus(ocf, status)); 69 } 70 onCommandComplete(int ocf, byte[] returnParameters, byte[] cookie)71 private void onCommandComplete(int ocf, byte[] returnParameters, byte[] cookie) { 72 mDispatcher.dispatchCommandStatusOrComplete( 73 cookie, (cb) -> cb.onCommandComplete(ocf, returnParameters)); 74 } 75 onEvent(int code, byte[] data)76 private void onEvent(int code, byte[] data) { 77 mDispatcher.broadcastEvent(code, (cb) -> cb.onEvent(code, data)); 78 } 79 80 // Native methods that call into the JNI interface 81 initNative()82 private native void initNative(); 83 cleanupNative()84 private native void cleanupNative(); 85 sendCommandNative(int ocf, byte[] parameters, byte[] cookie)86 private native void sendCommandNative(int ocf, byte[] parameters, byte[] cookie); 87 } 88