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