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 INTERFACES_INNERKITS_SURFACE_SURFACE_UTILS_H
17 #define INTERFACES_INNERKITS_SURFACE_SURFACE_UTILS_H
18 
19 #include <unordered_map>
20 #include <mutex>
21 #include "surface.h"
22 
23 namespace OHOS {
24 class SurfaceUtils {
25 public:
26     static SurfaceUtils* GetInstance();
27 
28     // get surface by uniqueId.
29     sptr<Surface> GetSurface(uint64_t uniqueId);
30     // maintenance map with uniqueId and surface.
31     SurfaceError Add(uint64_t uniqueId, const wptr<Surface> &surface);
32     // remove surface by uniqueId.
33     SurfaceError Remove(uint64_t uniqueId);
34     // Compute transform matrix
35     void ComputeTransformMatrix(float matrix[16], uint32_t matrixSize,
36         sptr<SurfaceBuffer>& buffer, GraphicTransformType& transform, Rect& crop);
37     void ComputeTransformMatrixV2(float matrix[16], uint32_t matrixSize,
38         sptr<SurfaceBuffer>& buffer, GraphicTransformType& transform, Rect& crop);
39 
40     void* GetNativeWindow(uint64_t uniqueId);
41     SurfaceError AddNativeWindow(uint64_t uniqueId, void *nativeWidow);
42     SurfaceError RemoveNativeWindow(uint64_t uniqueId);
43 
44 private:
45     SurfaceUtils() = default;
46     virtual ~SurfaceUtils();
47     std::array<float, 16> MatrixProduct(const std::array<float, 16>& lMat, const std::array<float, 16>& rMat);
48     static constexpr int32_t TRANSFORM_MATRIX_ELE_COUNT = 16;
49     void ComputeTransformByMatrix(GraphicTransformType& transform,
50         std::array<float, TRANSFORM_MATRIX_ELE_COUNT> *transformMatrix);
51     void ComputeTransformByMatrixV2(GraphicTransformType& transform,
52         std::array<float, TRANSFORM_MATRIX_ELE_COUNT> *transformMatrix);
53 
54     std::unordered_map<uint64_t, wptr<Surface>> surfaceCache_;
55     std::mutex mutex_;
56     std::unordered_map<uint64_t, void*> nativeWindowCache_;
57 };
58 } // namespace OHOS
59 
60 #endif // INTERFACES_INNERKITS_SURFACE_SURFACE_UTILS_H
61