AHandler.h revision 72961230a5890071bcca436eb5630172ce84ec41 
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
24namespace android {
25
26struct AMessage;
27
28struct AHandler : public RefBase {
29    AHandler()
30        : mID(0) {
31    }
32
33    ALooper::handler_id id() const {
34        return mID;
35    }
36
37protected:
38    virtual void onMessageReceived(const sp<AMessage> &msg) = 0;
39
40private:
41    friend struct ALooperRoster;
42
43    ALooper::handler_id mID;
44
45    void setID(ALooper::handler_id id) {
46        mID = id;
47    }
48
49    DISALLOW_EVIL_CONSTRUCTORS(AHandler);
50};
51
52}  // namespace android
53
54#endif  // A_HANDLER_H_
55