ImageSupport.java
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/*
* Decompiled with CFR 0_118.
*/
package com.day.image;
import ch.randelshofer.media.jpeg.CMYKJPEGImageReaderSpi;
import com.day.image.DitherOp;
import com.day.image.Layer;
import com.day.imageio.plugins.GIFImageMetadata;
import com.day.imageio.plugins.GIFStreamMetadata;
import com.day.imageio.plugins.GifImageWriterSpi;
import javax.imageio.IIOException;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.ImageWriter;
import javax.imageio.metadata.IIOMetadata;
import javax.imageio.spi.IIORegistry;
import javax.imageio.spi.ImageReaderSpi;
import javax.imageio.spi.ImageWriterSpi;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.IndexColorModel;
import java.io.IOException;
import java.util.Iterator;
public class ImageSupport {
private static final ImageSupport instance;
private static boolean registered;
private ImageWriterSpi gifImageWriterSpi;
private ImageReaderSpi cmykJpegImageReaderSpi;
protected ImageSupport() {
}
static void initialize() {
ImageSupport.registerImageIOSpi();
}
static void getGIFMetaData(Layer layer, ImageReader reader) throws IOException {
instance.doGetGIFMetaData(layer, reader);
}
static ImageWriter getImageWriter(String format) throws IOException {
if ("gif".equalsIgnoreCase(format)) {
return instance.getGIFImageWriterSpi().createWriterInstance();
}
Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(format);
if (!writers.hasNext()) {
writers = ImageIO.getImageWritersByMIMEType(format);
}
if (writers.hasNext()) {
return writers.next();
}
return null;
}
static IIOMetadata[] createGIFMetadata(Layer layer, ImageWriter writer, int numCol) {
return instance.doCreateGIFMetadata(layer, writer, numCol);
}
public static BufferedImage coerceData(BufferedImage image, boolean isAlphaPremultiplied) {
return instance.doCoerceData(image, isAlphaPremultiplied);
}
public static void registerImageIOSpi() {
if (!registered) {
IIORegistry reg = IIORegistry.getDefaultInstance();
reg.registerServiceProvider(instance.getGIFImageWriterSpi());
reg.registerServiceProvider(instance.getCmykJpegImageReaderSpi());
registered = true;
}
}
public static void deregisterImageIOSpi() {
if (registered) {
IIORegistry reg = IIORegistry.getDefaultInstance();
reg.deregisterServiceProvider(instance.getGIFImageWriterSpi());
reg.deregisterServiceProvider(instance.getCmykJpegImageReaderSpi());
registered = false;
}
}
protected void doGetGIFMetaData(Layer layer, ImageReader reader) throws IOException {
IIOMetadata smd;
int bgidx;
IIOMetadata imd;
try {
smd = reader.getStreamMetadata();
imd = reader.getImageMetadata(layer.getImageIndex());
}
catch (IIOException iioe) {
return;
}
byte[] globalColorTable = (byte[])ImageSupport.get(smd, "globalColorTable");
if (globalColorTable != null && (bgidx = 3 * ImageSupport.getInt(smd, "backgroundColorIndex", Integer.MAX_VALUE)) < globalColorTable.length) {
int r = globalColorTable[bgidx++] + 256 & 255;
int g = globalColorTable[bgidx++] + 256 & 255;
int b = globalColorTable[bgidx] + 256 & 255;
layer.setBackground(new Color(r, g, b));
}
if (ImageSupport.getBoolean(imd, "transparentColorFlag", false)) {
byte[] colTab = (byte[])ImageSupport.get(imd, "localColorTable");
if (colTab == null && globalColorTable != null) {
colTab = globalColorTable;
}
if (colTab != null) {
int transidx = 3 * ImageSupport.getInt(imd, "transparentColorIndex", 0);
int r = colTab[transidx++] + 256 & 255;
int g = colTab[transidx++] + 256 & 255;
int b = colTab[transidx++] + 256 & 255;
layer.setTransparency(new Color(r, g, b, 0));
}
}
}
protected IIOMetadata[] doCreateGIFMetadata(Layer layer, ImageWriter writer, int numCol) {
if (numCol <= 0) {
numCol = 2;
} else if (numCol > 256) {
numCol = 256;
}
BufferedImage reduced = DitherOp.convertToIndexed(layer.getImage(), numCol, layer.getTransparency(), layer.getBackgroundColor(), null);
if (reduced != layer.getImage()) {
layer.setImage(reduced);
}
IndexColorModel icm = (IndexColorModel)reduced.getColorModel();
GIFImageMetadata imd = (GIFImageMetadata)writer.getDefaultImageMetadata(null, null);
imd.imageLeftPosition = layer.getX() > 0 ? layer.getX() : 0;
imd.imageTopPosition = layer.getY() > 0 ? layer.getY() : 0;
imd.imageWidth = layer.getWidth();
imd.imageHeight = layer.getHeight();
GIFStreamMetadata smd = (GIFStreamMetadata)writer.getDefaultStreamMetadata(null);
smd.logicalScreenHeight = layer.getHeight();
smd.logicalScreenWidth = layer.getWidth();
if (layer.getTransparency() != null) {
imd.transparentColorFlag = true;
imd.transparentColorIndex = icm.getTransparentPixel();
}
smd.backgroundColorIndex = layer.getBackgroundColor().equals(layer.getTransparency()) ? icm.getTransparentPixel() : ImageSupport.toIndex(icm, layer.getBackgroundColor().getRGB());
return new IIOMetadata[]{smd, imd};
}
protected BufferedImage doCoerceData(BufferedImage image, boolean isAlphaPremultiplied) {
image.coerceData(isAlphaPremultiplied);
return image;
}
protected ImageWriterSpi getGIFImageWriterSpi() {
if (this.gifImageWriterSpi == null) {
this.gifImageWriterSpi = new GifImageWriterSpi();
}
return this.gifImageWriterSpi;
}
protected ImageReaderSpi getCmykJpegImageReaderSpi() {
if (this.cmykJpegImageReaderSpi == null) {
this.cmykJpegImageReaderSpi = new CMYKJPEGImageReaderSpi();
}
return this.cmykJpegImageReaderSpi;
}
protected static int toIndex(IndexColorModel icm, int rgb) {
Object pixel = icm.getDataElements(rgb, null);
switch (icm.getTransferType()) {
case 3: {
return ((int[])pixel)[0];
}
case 0: {
return ((byte[])pixel)[0];
}
case 1: {
return ((short[])pixel)[0];
}
}
return 0;
}
private static int getInt(Object object, String name, int defValue) {
try {
return object.getClass().getField(name).getInt(object);
}
catch (Throwable t) {
return defValue;
}
}
private static boolean getBoolean(Object object, String name, boolean defValue) {
try {
return object.getClass().getField(name).getBoolean(object);
}
catch (Throwable t) {
return defValue;
}
}
private static Object get(Object object, String name) {
try {
return object.getClass().getField(name).get(object);
}
catch (Throwable t) {
return null;
}
}
static {
registered = false;
instance = new ImageSupport();
ImageIO.setUseCache(false);
}
}