1 /*
2  * Copyright 2021 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include "phash_config.h"
20 
21 namespace android {
22 
23 // Represent a 2-D array of Length by kImageLength.
24 template <typename T>
25 class Array2D {
26 public:
27     Array2D(T* buffer2d) : buffer(buffer2d) {}
28 
29     const T& operator()(const int y, const int x) const { return buffer[y * kImageLength + x]; }
30 
31     T& operator()(const int y, const int x) { return buffer[y * kImageLength + x]; }
32 
33     int width() const { return kImageLength; }
34     int height() const { return kImageLength; }
35 
36 private:
37     T* const buffer;
38 };
39 
40 } // namespace android
41