1 /*
2 * Copyright (c) 2022-2022 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 #ifndef HISTREAMER_PLUGIN_TYPE_INFO_EXT_H
16 #define HISTREAMER_PLUGIN_TYPE_INFO_EXT_H
17
18 #include <cstring>
19 #include <memory>
20 #include <typeinfo>
21
22 namespace OHOS {
23 namespace Media {
24 namespace Plugin {
25 /**
26 * This function is used to compare two type_info. Besides the basic compare using operator == of type_info,
27 * we also consider types with the same names are the same types.
28 * @param t1 type
29 * @param t2 type
30 * @return true if t1 and t2 are the same type. otherwise, false.
31 */
IsSameType(const std::type_info & t1,const std::type_info & t2)32 inline bool IsSameType(const std::type_info& t1, const std::type_info& t2) noexcept
33 {
34 if (t1 == t2) {
35 return true;
36 }
37 auto t1Length = strlen(t1.name());
38 if (t1Length == strlen(t2.name()) && strncmp(t1.name(), t2.name(), t1Length) == 0) {
39 return true;
40 }
41 return false;
42 }
43
44 /**
45 * This function is used to reinterpret cast one shared_ptr into another shared_ptr.
46 * @tparam T type
47 * @tparam U type
48 * @param ptr pointer
49 * @return cast result
50 */
51 template<typename T, typename U>
ReinterpretPointerCast(const std::shared_ptr<U> & ptr)52 inline std::shared_ptr<T> ReinterpretPointerCast(const std::shared_ptr<U>& ptr) noexcept
53 {
54 return std::shared_ptr<T>(ptr, reinterpret_cast<T*>(ptr.get()));
55 }
56 } // Plugin
57 } // Media
58 } // OHOS
59
60 #endif // HISTREAMER_PLUGIN_TYPE_INFO_EXT_H
61