1/*
2 * Copyright (C) 2007 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 SOUNDPOOLTHREAD_H_
18#define SOUNDPOOLTHREAD_H_
19
20#include <utils/threads.h>
21#include <utils/Vector.h>
22#include <media/AudioTrack.h>
23
24#include "SoundPool.h"
25
26namespace android {
27
28class SoundPoolMsg {
29public:
30    enum MessageType { INVALID, KILL, LOAD_SAMPLE };
31    SoundPoolMsg() : mMessageType(INVALID), mData(0) {}
32    SoundPoolMsg(MessageType MessageType, int data) :
33        mMessageType(MessageType), mData(data) {}
34    uint16_t         mMessageType;
35    uint16_t         mData;
36};
37
38/*
39 * This class handles background requests from the SoundPool
40 */
41class SoundPoolThread {
42public:
43    SoundPoolThread(SoundPool* SoundPool);
44    ~SoundPoolThread();
45    void loadSample(int sampleID);
46    void quit();
47    void write(SoundPoolMsg msg);
48
49private:
50    static const size_t maxMessages = 5;
51
52    static int beginThread(void* arg);
53    int run();
54    void doLoadSample(int sampleID);
55    const SoundPoolMsg read();
56
57    Mutex                   mLock;
58    Condition               mCondition;
59    Vector<SoundPoolMsg>    mMsgQueue;
60    SoundPool*              mSoundPool;
61    bool                    mRunning;
62};
63
64} // end namespace android
65
66#endif /*SOUNDPOOLTHREAD_H_*/
67