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105 lines
3.1 KiB
105 lines
3.1 KiB
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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//#define LOG_NDEBUG 0
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#define LOG_TAG "SoundPool::SoundManager"
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#include <utils/Log.h>
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#include "SoundManager.h"
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#include <thread>
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#include "SoundDecoder.h"
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namespace android::soundpool {
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static const size_t kDecoderThreads = std::thread::hardware_concurrency() >= 4 ? 2 : 1;
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SoundManager::SoundManager()
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: mDecoder{std::make_unique<SoundDecoder>(this, kDecoderThreads)}
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{
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ALOGV("%s()", __func__);
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}
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SoundManager::~SoundManager()
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{
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ALOGV("%s()", __func__);
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mDecoder->quit();
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std::lock_guard lock(mSoundManagerLock);
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mSounds.clear();
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}
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int32_t SoundManager::load(int fd, int64_t offset, int64_t length, int32_t priority)
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{
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ALOGV("%s(fd=%d, offset=%lld, length=%lld, priority=%d)",
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__func__, fd, (long long)offset, (long long)length, priority);
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int32_t soundID;
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{
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std::lock_guard lock(mSoundManagerLock);
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// mNextSoundID is always positive and does not "integer overflow"
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do {
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mNextSoundID = mNextSoundID == INT32_MAX ? 1 : mNextSoundID + 1;
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} while (findSound_l(mNextSoundID) != nullptr);
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soundID = mNextSoundID;
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auto sound = std::make_shared<Sound>(soundID, fd, offset, length);
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mSounds.emplace(soundID, sound);
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}
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// mDecoder->loadSound() must be called outside of mSoundManagerLock.
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// mDecoder->loadSound() may block on mDecoder message queue space;
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// the message queue emptying may block on SoundManager::findSound().
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//
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// It is theoretically possible that sound loads might decode out-of-order.
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mDecoder->loadSound(soundID);
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return soundID;
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}
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bool SoundManager::unload(int32_t soundID)
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{
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ALOGV("%s(soundID=%d)", __func__, soundID);
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std::lock_guard lock(mSoundManagerLock);
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return mSounds.erase(soundID) > 0; // erase() returns number of sounds removed.
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}
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std::shared_ptr<Sound> SoundManager::findSound(int32_t soundID) const
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{
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std::lock_guard lock(mSoundManagerLock);
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return findSound_l(soundID);
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}
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std::shared_ptr<Sound> SoundManager::findSound_l(int32_t soundID) const
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{
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auto it = mSounds.find(soundID);
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return it != mSounds.end() ? it->second : nullptr;
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}
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void SoundManager::setCallback(SoundPool *soundPool, SoundPoolCallback* callback, void* user)
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{
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mCallbackHandler.setCallback(soundPool, callback, user);
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}
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void SoundManager::notify(SoundPoolEvent event)
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{
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mCallbackHandler.notify(event);
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}
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void* SoundManager::getUserData() const
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{
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return mCallbackHandler.getUserData();
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}
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} // namespace android::soundpool
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