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_DEVICE_CACHE_H
17 #define OHOS_HDI_DISPLAY_V1_0_DEVICE_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 "layer_cache.h"
25 #include "nocopyable.h"
26 
27 namespace OHOS {
28 namespace HDI {
29 namespace Display {
30 namespace Composer {
31 using namespace OHOS::HDI::Base;
32 class DeviceCache : public NoCopyable {
33 public:
34     enum DeviceType {
35         DEVICE_TYPE_DEVICE = 0,
36         DEVICE_TYPE_VIRTUAL,
37         DEVICE_TYPE_BUTT
38     };
39 
40     ~DeviceCache();
41     static DeviceCache* Create(uint32_t id, DeviceType type);
42     int32_t SetClientBufferCacheCount(uint32_t bufferCacheCount);
43     LayerCache* LayerCacheInstance(uint32_t layerId) const;
44     int32_t AddLayerCache(uint32_t id, uint32_t bufferCacheCount);
45     int32_t RemoveLayerCache(uint32_t id);
46     int32_t ClearClientCache();
47     int32_t ClearLayerBuffer(uint32_t layerId);
48     int32_t SetDisplayClientBuffer(BufferHandle*& buffer, uint32_t seqNo, bool &needFreeBuffer,
49         std::function<int32_t (const BufferHandle&)> realFunc);
50     int32_t SetVirtualDisplayBuffer(BufferHandle*& buffer, uint32_t seqNo, bool &needFreeBuffer,
51         std::function<int32_t (const BufferHandle&)> realFunc);
52     DeviceType CacheType() const;
53     void Dump() const;
54 private:
55     DeviceCache(uint32_t id, DeviceType type);
56     int32_t Init();
57     uint32_t deviceId_;
58     DeviceType cacheType_;
59     std::shared_ptr<CacheManager<uint32_t, NativeBuffer>> clientBufferCaches_;
60     std::shared_ptr<CacheManager<uint32_t, NativeBuffer>> outputBufferCaches_;
61     std::shared_ptr<CacheManager<uint32_t, LayerCache>> layerCaches_;
62 };
63 } // namespace Composer
64 } // namespace Display
65 } // namespace HDI
66 } // namespace OHOS
67 #endif // OHOS_HDI_DISPLAY_V1_0_DEVICE_CACHE_H
68