1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef FOUNDATION_ACE_FRAMEWORKS_BASE_RESOURCE_SHARED_IMAGE_MANAGER_H 17 #define FOUNDATION_ACE_FRAMEWORKS_BASE_RESOURCE_SHARED_IMAGE_MANAGER_H 18 19 #include <cstddef> 20 #include <cstdint> 21 #include <functional> 22 #include <mutex> 23 #include <new> 24 #include <set> 25 #include <string> 26 #include <unordered_map> 27 #include <vector> 28 29 #include "base/memory/ace_type.h" 30 #include "base/thread/cancelable_callback.h" 31 #include "base/thread/task_executor.h" 32 #include "base/utils/noncopyable.h" 33 34 namespace OHOS::Ace { 35 36 using SharedImage = std::vector<uint8_t>; 37 using SharedImageMap = std::unordered_map<std::string, SharedImage>; 38 39 class ImageProviderLoader; 40 using ProviderMapToReload = std::unordered_map<std::string, std::set<WeakPtr<ImageProviderLoader>>>; 41 42 class SharedImageManager : public AceType { 43 DECLARE_ACE_TYPE(SharedImageManager, AceType); 44 45 public: SharedImageManager(const RefPtr<TaskExecutor> & taskExecutor)46 explicit SharedImageManager(const RefPtr<TaskExecutor>& taskExecutor) : taskExecutor_(taskExecutor) {} 47 ~SharedImageManager() override = default; 48 void AddSharedImage(const std::string& name, SharedImage&& sharedImage); 49 void AddPictureNamesToReloadMap(std::string&& name); 50 bool FindImageInSharedImageMap(const std::string& name, const WeakPtr<ImageProviderLoader>& providerWp); 51 GetSharedImageMap()52 const SharedImageMap& GetSharedImageMap() const 53 { 54 return sharedImageMap_; 55 } 56 57 bool Remove(const std::string& name); 58 59 // return true if successfully registered 60 bool RegisterLoader(const std::string& name, const WeakPtr<ImageProviderLoader>& providerWp); 61 62 private: 63 void PostDelayedTaskToClearImageData(const std::string& name, size_t dataSize); 64 std::function<void()> GenerateClearImageDataCallback(const std::string& name, size_t dataSize); 65 66 std::mutex sharedImageMapMutex_; 67 std::mutex providerMapMutex_; 68 std::mutex cancelableCallbackMapMutex_; 69 SharedImageMap sharedImageMap_; 70 ProviderMapToReload providerMapToReload_; 71 std::function<void()> clearImageDataCallback_; 72 std::unordered_map<std::string, CancelableCallback<void()>> cancelableCallbackMap_; 73 WeakPtr<TaskExecutor> taskExecutor_; 74 }; 75 76 class ImageProviderLoader : public virtual AceType { 77 DECLARE_ACE_TYPE(ImageProviderLoader, AceType); 78 79 public: 80 ~ImageProviderLoader() override = default; 81 virtual void UpdateData(const std::string& uri, const std::vector<uint8_t>& memData) = 0; 82 83 protected: 84 ImageProviderLoader() = default; 85 86 ACE_DISALLOW_COPY_AND_MOVE(ImageProviderLoader); 87 }; 88 89 } // namespace OHOS::Ace 90 91 #endif // FOUNDATION_ACE_FRAMEWORKS_BASE_RESOURCE_SHARED_IMAGE_MANAGER_H 92