1 /*
2  * Copyright (C) 2017 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 package com.android.internal.graphics.palette;
18 
19 import java.util.List;
20 
21 /**
22  * Definition of an algorithm that receives pixels and outputs a list of colors.
23  */
24 public interface Quantizer {
25     /**
26      * Create colors representative of the colors present in pixels.
27      * @param pixels Set of ARGB representation of a color.
28      * @param maxColors number of colors to generate
29      */
quantize(int[] pixels, int maxColors)30     void quantize(int[] pixels, int maxColors);
31 
32     /**
33      * List of colors generated by previous call to quantize.
34      */
getQuantizedColors()35     List<Palette.Swatch> getQuantizedColors();
36 }
37