1 /*
2  * Copyright (c) 2023 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 OHOS_HDI_DISPLAY_V1_0_LAYER_CACHE_H
17 #define OHOS_HDI_DISPLAY_V1_0_LAYER_CACHE_H
18 
19 #include <functional>
20 #include <memory>
21 #include <unordered_map>
22 #include "base/native_buffer.h"
23 #include "cache_manager.h"
24 #include "nocopyable.h"
25 #include "v1_2/mapper_stub.h"
26 
27 namespace OHOS {
28 namespace HDI {
29 namespace Display {
30 namespace Composer {
31 using namespace OHOS::HDI::Base;
32 class LayerCache : public NoCopyable {
33 public:
34     ~LayerCache();
35     static LayerCache* Create(uint32_t id);
36     int32_t SetLayerBuffer(BufferHandle*& buffer, uint32_t seqNo, bool &needFreeBuffer,
37         const std::vector<uint32_t>& deletingList, std::function<int32_t (const BufferHandle&)> realFunc);
38     int32_t SetBufferCacheMaxCount(uint32_t cacheCount);
39     int32_t ResetLayerBuffer();
40     void Dump() const;
41     static void NativeBufferInit(std::unique_ptr<NativeBuffer>& buffer);
42     static void NativeBufferCleanUp(std::unique_ptr<NativeBuffer>& buffer);
43 private:
44     explicit LayerCache(uint32_t id);
45     int32_t Init();
46     static sptr<Buffer::V1_2::IMapper> GetMapperService();
47     static int32_t Mmap(std::unique_ptr<NativeBuffer>& buffer);
48     static int32_t Unmap(std::unique_ptr<NativeBuffer>& buffer);
49 
50     uint32_t layerId_;
51     std::shared_ptr<CacheManager<uint32_t, NativeBuffer>> bufferCaches_;
52 };
53 } // namespace Composer
54 } // namespace Display
55 } // namespace HDI
56 } // namespace OHOS
57 #endif // OHOS_HDI_DISPLAY_V1_0_LAYER_CACHE_H
58