android-34/com/android/systemui/monet/quantize/QuantizerMap.java

/*
 * Copyright (C) 2023 The Android Open Source Project
 *
 * 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.android.systemui.monet.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;
    }
}