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, PLAY_SAMPLE, SAMPLE_DONE }; 31 SoundPoolMsg() : mMessageType(INVALID), mData(0) {} 32 SoundPoolMsg(MessageType MessageType, int data) : 33 mMessageType(MessageType), mData(data) {} 34 uint8_t mMessageType; 35 uint8_t mData; 36 uint8_t mData2; 37 uint8_t mData3; 38}; 39 40/* 41 * This class handles background requests from the SoundPool 42 */ 43class SoundPoolThread { 44public: 45 SoundPoolThread(SoundPool* SoundPool); 46 ~SoundPoolThread(); 47 void loadSample(int sampleID); 48 void quit() { mMessages.quit(); } 49 50private: 51 static const size_t maxMessages = 5; 52 53 class MessageQueue { 54 public: 55 void write(SoundPoolMsg msg); 56 const SoundPoolMsg read(); 57 void setCapacity(size_t size) { mQueue.setCapacity(size); } 58 void quit(); 59 private: 60 Vector<SoundPoolMsg> mQueue; 61 Mutex mLock; 62 Condition mCondition; 63 }; 64 65 static int beginThread(void* arg); 66 int run(); 67 void doLoadSample(int sampleID); 68 69 SoundPool* mSoundPool; 70 MessageQueue mMessages; 71}; 72 73} // end namespace android 74 75#endif /*SOUNDPOOLTHREAD_H_*/ 76