| /* |
| * Copyright (C) 2010 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. |
| */ |
| |
| #ifndef A_HANDLER_H_ |
| |
| #define A_HANDLER_H_ |
| |
| #include <media/stagefright/foundation/ALooper.h> |
| #include <utils/KeyedVector.h> |
| #include <utils/RefBase.h> |
| |
| namespace android { |
| |
| struct AMessage; |
| |
| struct AHandler : public RefBase { |
| AHandler() |
| : mID(0), |
| mVerboseStats(false), |
| mMessageCounter(0) { |
| } |
| |
| ALooper::handler_id id() const { |
| return mID; |
| } |
| |
| sp<ALooper> looper() const { |
| return mLooper.promote(); |
| } |
| |
| wp<ALooper> getLooper() const { |
| return mLooper; |
| } |
| |
| wp<AHandler> getHandler() const { |
| // allow getting a weak reference to a const handler |
| return const_cast<AHandler *>(this); |
| } |
| |
| protected: |
| virtual void onMessageReceived(const sp<AMessage> &msg) = 0; |
| |
| private: |
| friend struct AMessage; // deliverMessage() |
| friend struct ALooperRoster; // setID() |
| |
| ALooper::handler_id mID; |
| wp<ALooper> mLooper; |
| |
| inline void setID(ALooper::handler_id id, wp<ALooper> looper) { |
| mID = id; |
| mLooper = looper; |
| } |
| |
| bool mVerboseStats; |
| uint32_t mMessageCounter; |
| KeyedVector<uint32_t, uint32_t> mMessages; |
| |
| void deliverMessage(const sp<AMessage> &msg); |
| |
| DISALLOW_EVIL_CONSTRUCTORS(AHandler); |
| }; |
| |
| } // namespace android |
| |
| #endif // A_HANDLER_H_ |