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https://github.com/CloverHackyColor/CloverBootloader.git
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112 lines
3.2 KiB
Java
112 lines
3.2 KiB
Java
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package org.pngquant;
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import org.pngquant.*;
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import java.awt.image.*;
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/**
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* Starting point for the library. Holds configuration. Equivalent of liq_attr* in libimagequant.
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*/
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public class PngQuant extends LiqObject {
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/**
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* Single instance can be "recycled" for many remappings.
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*/
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public PngQuant() {
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handle = liq_attr_create();
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}
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public PngQuant(PngQuant other) {
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handle = liq_attr_copy(other.handle);
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}
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/**
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* 1-shot quantization and remapping with current settings.
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* @see quantize()
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*
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* @return 8-bit indexed image or null on failure
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*/
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public BufferedImage getRemapped(BufferedImage bufimg) {
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try {
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Image liqimg = new Image(this, bufimg);
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BufferedImage remapped = getRemapped(liqimg);
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liqimg.close();
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return remapped;
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} catch(PngQuantException e) {
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return null;
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}
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}
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/** @return remapped image or null on failure */
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public BufferedImage getRemapped(Image liqimg) {
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Result result = quantize(liqimg);
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if (result == null) return null;
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BufferedImage remapped = result.getRemapped(liqimg);
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result.close();
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return remapped;
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}
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/**
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* Performs quantization (chooses optimal palette for the given Image).
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* Returned object can be used to customize remapping and reused to remap other images to the same palette.
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* @link http://pngquant.org/lib/#liq_quantize_image
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*
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* @return null on failure
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*/
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public Result quantize(Image img) {
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try {
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return new Result(this, img);
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} catch(PngQuantException e) {
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return null;
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}
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}
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/**
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* Remapped images won't use more than given number of colors (may use less if setQuality() is used)
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*
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* @link http://pngquant.org/lib/#liq_set_max_colors
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*/
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public native boolean setMaxColors(int colors);
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/**
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* Equivalent of setQuality(target/2, target)
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*
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* @link http://pngquant.org/lib/#liq_set_quality
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*/
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public native boolean setQuality(int target);
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/**
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* Quality in range 0-100. Quantization will fail if minimum quality cannot
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* be achieved with given number of colors.
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*
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* @link http://pngquant.org/lib/#liq_set_quality
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*/
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public native boolean setQuality(int min, int max);
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/**
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* Speed in range 1 (slowest) and 11 (fastest). 3 is the optimum.
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* Higher speeds quantize quicker, but at cost of quality and sometimes larger images.
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*
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* @link http://pngquant.org/lib/#liq_set_speed
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*/
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public native boolean setSpeed(int speed);
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/**
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* Reduces color precision by truncating number of least significant bits.
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* Slightly improves speed and helps generating images for low-fidelity displays/textures.
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*
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* @link http://pngquant.org/lib/#liq_set_min_posterization
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*/
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public native boolean setMinPosterization(int bits);
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public void close() {
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if (handle != 0) {
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liq_attr_destroy(handle);
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handle = 0;
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}
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}
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private static native long liq_attr_create();
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private static native long liq_attr_copy(long orig);
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private static native void liq_attr_destroy(long handle);
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}
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