1 /* 2 * Copyright (C) 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 android.media; 18 19 import android.os.Handler; 20 21 /** 22 * Helper class {@link AudioTrack}, {@link AudioRecord}, {@link MediaPlayer} and {@link MediaRecorder} 23 * to handle the forwarding of native events to the appropriate listener 24 * (potentially) handled in a different thread. 25 * @hide 26 */ 27 class NativeRoutingEventHandlerDelegate { 28 private AudioRouting mAudioRouting; 29 private AudioRouting.OnRoutingChangedListener mOnRoutingChangedListener; 30 private Handler mHandler; 31 32 NativeRoutingEventHandlerDelegate(final AudioRouting audioRouting, 33 final AudioRouting.OnRoutingChangedListener listener, Handler handler) { 34 mAudioRouting = audioRouting; 35 mOnRoutingChangedListener = listener; 36 mHandler = handler; 37 } 38 39 void notifyClient() { 40 if (mHandler != null) { 41 mHandler.post(new Runnable() { 42 @Override 43 public void run() { 44 if (mOnRoutingChangedListener != null) { 45 mOnRoutingChangedListener.onRoutingChanged(mAudioRouting); 46 } 47 } 48 }); 49 } 50 } 51 } 52
