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 HOS_BUFFER_ALLOCATOR_UTILS_H
17 #define HOS_BUFFER_ALLOCATOR_UTILS_H
18 
19 #include "camera.h"
20 #include "ibuffer.h"
21 #include "ibuffer_allocator.h"
22 
23 namespace OHOS::Camera {
24 class BufferAllocatorUtils {
25 public:
26     // get buffer allocator
27     static std::shared_ptr<IBufferAllocator> GetAllocator(std::shared_ptr<IBuffer>& buffer);
28 
29     // allocate buffer from source.
30     static std::shared_ptr<IBuffer> AllocBuffer(const int32_t source,
31                                                 const uint32_t width,
32                                                 const uint32_t height,
33                                                 const uint64_t usage,
34                                                 const uint32_t format);
35 
36     // free the buffer
37     static RetCode FreeBuffer(std::shared_ptr<IBuffer>& buffer);
38 
39     // Map the buffer
40     static RetCode MapBuffer(std::shared_ptr<IBuffer>& buffer);
41 
42     // Unmap the buffer
43     static RetCode UnmapBuffer(std::shared_ptr<IBuffer>& buffer);
44 
45     // flush the buffer
46     static RetCode FlushCache(std::shared_ptr<IBuffer>& buffer);
47 
48     // invalidate the cache, update cache from memory
49     static RetCode InvalidateCache(std::shared_ptr<IBuffer>& buffer);
50 private:
51     static std::shared_ptr<IBufferAllocator> GetBufferAllocator(const int32_t source);
52 };
53 } // namespace OHOS::Camera
54 #endif
55