1 /* 2 * Copyright (C) 2019 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 #pragma once 18 19 #include "SoundPool.h" 20 21 #include <deque> 22 #include <mutex> 23 24 namespace android::soundpool { 25 26 /** 27 * SoundDecoder handles background decoding tasks. 28 */ 29 class SoundDecoder { 30 public: 31 SoundDecoder(SoundManager* soundManager, size_t threads); 32 ~SoundDecoder(); 33 void loadSound(int32_t soundID) NO_THREAD_SAFETY_ANALYSIS; // uses unique_lock 34 void quit(); 35 36 private: 37 // The decode thread function. 38 void run(int32_t id) NO_THREAD_SAFETY_ANALYSIS; // uses unique_lock 39 40 SoundManager* const mSoundManager; // set in constructor, has own lock 41 std::unique_ptr<ThreadPool> mThreadPool; // set in constructor, has own lock 42 43 std::mutex mLock; 44 std::condition_variable mQueueSpaceAvailable GUARDED_BY(mLock); 45 std::condition_variable mQueueDataAvailable GUARDED_BY(mLock); 46 47 std::deque<int32_t> mSoundIDs GUARDED_BY(mLock); 48 bool mQuit GUARDED_BY(mLock) = false; 49 }; 50 51 } // end namespace android::soundpool 52 53