1 /*
2  * Copyright (c) 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 
16 #ifndef GET_OBJECT_H
17 #define GET_OBJECT_H
18 
19 #include <securec.h>
20 
21 namespace OHOS {
22 namespace Rosen {
23 namespace Drawing {
24 static const uint8_t* g_data = nullptr;
25 static size_t g_size = 0;
26 static size_t g_pos = 0;
27 
28 template<class T>
GetObject()29 T GetObject()
30 {
31     T object {};
32     size_t objectSize = sizeof(object);
33     if (g_data == nullptr || objectSize > g_size - g_pos) {
34         return object;
35     }
36     errno_t ret = memcpy_s(&object, objectSize, g_data + g_pos, objectSize);
37     if (ret != EOK) {
38         return {};
39     }
40     g_pos += objectSize;
41     return object;
42 }
43 } // namespace Drawing
44 } // namespace Rosen
45 } // namespace OHOS
46 #endif // GET_OBJECT_H