1 /* 2 * Copyright (C) 2010 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 #ifndef A_HANDLER_H_ 18 19 #define A_HANDLER_H_ 20 21 #include <media/stagefright/foundation/ALooper.h> 22 #include <utils/RefBase.h> 23 24 namespace android { 25 26 struct AMessage; 27 28 struct AHandler : public RefBase { AHandlerAHandler29 AHandler() 30 : mID(0) { 31 } 32 idAHandler33 ALooper::handler_id id() const { 34 return mID; 35 } 36 37 sp<ALooper> looper(); 38 39 protected: 40 virtual void onMessageReceived(const sp<AMessage> &msg) = 0; 41 42 private: 43 friend struct ALooperRoster; 44 45 ALooper::handler_id mID; 46 setIDAHandler47 void setID(ALooper::handler_id id) { 48 mID = id; 49 } 50 51 DISALLOW_EVIL_CONSTRUCTORS(AHandler); 52 }; 53 54 } // namespace android 55 56 #endif // A_HANDLER_H_ 57