AHandler.h revision f09611f2f33752afc28141e1bbaa897651c05d6f 
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/KeyedVector.h>
23#include <utils/RefBase.h>
24
25namespace android {
26
27struct AMessage;
28
29struct AHandler : public RefBase {
30    AHandler()
31        : mID(0),
32          mMessageCounter(0) {
33    }
34
35    ALooper::handler_id id() const {
36        return mID;
37    }
38
39    sp<ALooper> looper();
40
41protected:
42    virtual void onMessageReceived(const sp<AMessage> &msg) = 0;
43
44private:
45    friend struct ALooperRoster;
46
47    ALooper::handler_id mID;
48
49    void setID(ALooper::handler_id id) {
50        mID = id;
51    }
52
53    uint32_t mMessageCounter;
54    KeyedVector<uint32_t, uint32_t> mMessages;
55
56    DISALLOW_EVIL_CONSTRUCTORS(AHandler);
57};
58
59}  // namespace android
60
61#endif  // A_HANDLER_H_
62