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      1 /*
      2  * Copyright (C) 2018 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 #include "Observer.h"
     18 
     19 namespace android {
     20 namespace hardware {
     21 namespace media {
     22 namespace bufferpool {
     23 namespace V2_0 {
     24 namespace implementation {
     25 
     26 Observer::Observer() {
     27 }
     28 
     29 Observer::~Observer() {
     30 }
     31 
     32 // Methods from ::android::hardware::media::bufferpool::V2_0::IObserver follow.
     33 Return<void> Observer::onMessage(int64_t connectionId, uint32_t msgId) {
     34     std::unique_lock<std::mutex> lock(mLock);
     35     auto it = mClients.find(connectionId);
     36     if (it != mClients.end()) {
     37         const std::shared_ptr<BufferPoolClient> client = it->second.lock();
     38         if (!client) {
     39             mClients.erase(it);
     40         } else {
     41             lock.unlock();
     42             client->receiveInvalidation(msgId);
     43         }
     44     }
     45     return Void();
     46 }
     47 
     48 void Observer::addClient(ConnectionId connectionId,
     49                          const std::weak_ptr<BufferPoolClient> &wclient) {
     50     std::lock_guard<std::mutex> lock(mLock);
     51     for (auto it = mClients.begin(); it != mClients.end();) {
     52         if (!it->second.lock() || it->first == connectionId) {
     53             it = mClients.erase(it);
     54         } else {
     55             ++it;
     56         }
     57     }
     58     mClients.insert(std::make_pair(connectionId, wclient));
     59 
     60 }
     61 
     62 void Observer::delClient(ConnectionId connectionId) {
     63     std::lock_guard<std::mutex> lock(mLock);
     64     mClients.erase(connectionId);
     65 }
     66 
     67 
     68 }  // namespace implementation
     69 }  // namespace V2_0
     70 }  // namespace bufferpool
     71 }  // namespace media
     72 }  // namespace hardware
     73 }  // namespace android
     74