content: /*
   * Copyright 2021 Google LLC
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.google.material.color.quantize;
  
  import java.util.LinkedHashMap;
  import java.util.Map;
  
  /**
   * Creates a dictionary with keys of colors, and values of count of the color
   */
  public final class QuantizerMap implements Quantizer {
    Map<Integer, Integer> colorToCount;
  
    @Override
    public QuantizerResult quantize(int[] pixels, int colorCount) {
      final Map<Integer, Integer> pixelByCount = new LinkedHashMap<>();
      for (int pixel : pixels) {
        final Integer currentPixelCount = pixelByCount.get(pixel);
        final int newPixelCount = currentPixelCount == null ? 1 : currentPixelCount + 1;
        pixelByCount.put(pixel, newPixelCount);
      }
      colorToCount = pixelByCount;
      return new QuantizerResult(pixelByCount);
    }
  
    public Map<Integer, Integer> getColorToCount() {
      return colorToCount;
    }
  }
  