mirror of
https://github.com/openharmony/multimedia_image_standard.git
synced 2026-07-20 22:40:54 -04:00
magekkkk
91 lines
3.6 KiB
C++
91 lines
3.6 KiB
C++
/*
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* Copyright (C) 2021 Huawei Device Co., Ltd.
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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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#ifndef PLUGIN_UTILS_H
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#define PLUGIN_UTILS_H
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#include <map>
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#include <string>
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#include "plugin_class_base.h"
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namespace OHOS {
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namespace MultimediaPlugin {
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template<class ImplClassType>
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PluginClassBase *CreatePluginObject()
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{
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return static_cast<PluginClassBase *>(new (std::nothrow) ImplClassType()); // upward conversion.
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}
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} // namespace MultimediaPlugin
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} // namespace OHOS
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#define PLUGIN_OBJECT_CREATOR(ImplClassType) OHOS::MultimediaPlugin::CreatePluginObject<ImplClassType>
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#define IMPL_CLASS_NAME_STRING(ImplClassType) (#ImplClassType)
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using PluginObjectCreatorFunc = OHOS::MultimediaPlugin::PluginClassBase *(*)();
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// --------- a set of code fragments that helps define a simple plugin_export.cpp file ----------
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#define PLUGIN_EXPORT_REGISTER_PACKAGE(packageName) \
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static const std::string PACKAGE_NAME = (packageName);
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#define PLUGIN_EXPORT_REGISTER_CLASS_BEGIN \
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using ImplClassMap = std::map<const std::string, PluginObjectCreatorFunc>; \
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static ImplClassMap implClassMap = {
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#define PLUGIN_EXPORT_REGISTER_CLASS(ImplClassType) \
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{ IMPL_CLASS_NAME_STRING(ImplClassType), PLUGIN_OBJECT_CREATOR(ImplClassType) },
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#define PLUGIN_EXPORT_REGISTER_CLASS_END \
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};
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#define PLUGIN_EXPORT_DEFAULT_EXTERNAL_START() \
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bool PluginExternalStart() \
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{ \
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PLUGIN_LOG_D("call PluginExternalStart() in package: %{public}s.", PACKAGE_NAME.c_str()); \
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return true; \
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}
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#define PLUGIN_EXPORT_DEFAULT_EXTERNAL_STOP() \
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void PluginExternalStop() \
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{ \
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PLUGIN_LOG_D("call PluginExternalStop() in package: %{public}s.", PACKAGE_NAME.c_str()); \
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return; \
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}
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#define PLUGIN_EXPORT_DEFAULT_EXTERNAL_CREATE() \
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OHOS::MultimediaPlugin::PluginClassBase *PluginExternalCreate(const std::string &className) \
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{ \
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PLUGIN_LOG_D("PluginExternalCreate: create object for package: %{public}s, class: %{public}s.", \
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PACKAGE_NAME.c_str(), className.c_str()); \
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\
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auto iter = implClassMap.find(className); \
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if (iter == implClassMap.end()) { \
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PLUGIN_LOG_E("PluginExternalCreate: failed to find class: %{public}s, in package: %{public}s.", \
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className.c_str(), PACKAGE_NAME.c_str()); \
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return nullptr; \
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} \
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\
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auto creator = iter->second; \
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if (creator == nullptr) { \
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PLUGIN_LOG_E("PluginExternalCreate: null creator for class: %{public}s, in package: %{public}s.", \
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className.c_str(), PACKAGE_NAME.c_str()); \
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return nullptr; \
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} \
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\
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return creator(); \
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}
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#endif // PLUGIN_UTILS_H
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