Java Sejda WebP ImageIO chuyển đổi các định dạng ảnh sang WEBP

<!-- Java Lib for Image WebP -->
<!-- https://mvnrepository.com/artifact/org.sejda.webp-imageio/webp-imageio-sejda -->
<dependency>
    <groupId>org.sejda.webp-imageio</groupId>
    <artifactId>webp-imageio-sejda</artifactId>
    <version>0.1.0</version> 
</dependency>

<!-- https://mvnrepository.com/artifact/commons-io/commons-io -->
<dependency>
	<groupId>commons-io</groupId>
	<artifactId>commons-io</artifactId>
	<version>2.11.0</version>
</dependency>

package org.o7planning.java_14179_webp;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.stream.FileImageOutputStream;
import javax.imageio.stream.ImageOutputStream;

import com.luciad.imageio.webp.WebPWriteParam;

public class WebpUtils {

	public static byte[] imageBytesToWebpBytes(byte[] imageBytes) throws IOException {
		InputStream is = new ByteArrayInputStream(imageBytes);
		BufferedImage image = ImageIO.read(is);
		//
		// Obtain a WebP ImageWriter instance
		ImageWriter writer = ImageIO.getImageWritersByMIMEType("image/webp").next();

		// Configure encoding parameters
		WebPWriteParam writeParam = new WebPWriteParam(writer.getLocale());
		writeParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
		writeParam.setCompressionType(writeParam.getCompressionTypes()[WebPWriteParam.LOSSLESS_COMPRESSION]);

		ByteArrayOutputStream baos = new ByteArrayOutputStream();
		ImageOutputStream ios = ImageIO.createImageOutputStream(baos);

		// Configure the output on the ImageWriter
		writer.setOutput(ios);
		writer.write(null, new IIOImage(image, null, null), writeParam);
		ios.flush();

		return baos.toByteArray();
	}

	public static void imageFileToWebpImageFile(File inputFile, File webpOutputFile) throws IOException {
		FileInputStream fis = new FileInputStream(inputFile);
		BufferedImage image = ImageIO.read(fis);

		ImageWriter writer = ImageIO.getImageWritersByMIMEType("image/webp").next();

		WebPWriteParam writeParam = new WebPWriteParam(writer.getLocale());
		// Notify encoder to consider WebPWriteParams
		writeParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
		// Set lossless compression
		writeParam.setCompressionType(writeParam.getCompressionTypes()[WebPWriteParam.LOSSLESS_COMPRESSION]);

		// Save the image
		writer.setOutput(new FileImageOutputStream(webpOutputFile));
		writer.write(null, new IIOImage(image, null, null), writeParam);
	}
}

//
// Set lossy compression
//
writeParam.setCompressionType(writeParam.getCompressionTypes()[WebPWriteParam.LOSSY_COMPRESSION]);
//
// Compression Quality: 50%.
//
writeParam.setCompressionQuality(0.5f);

package org.o7planning.java_14179_webp;

import java.io.File;
import java.io.IOException;

public class MainTest1 { 

	public static void main(String[] args) throws IOException {
		File inputFile = new File("/Volumes/New/Test/pngFile.png");

		File webpOutputFile = new File("/Volumes/New/Test/output/webpFile1.webp");
		webpOutputFile.getParentFile().mkdirs();

		WebpUtils.imageFileToWebpImageFile(inputFile, webpOutputFile);
		System.out.println("Done!");
	} 
}

package org.o7planning.java_14179_webp;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;

public class MainTest2 {

	public static void main(String[] args) throws IOException {
		File inputFile = new File("/Volumes/New/Test/pngFile.png");
		// Common IO.
		byte[] imageBytes = FileUtils.readFileToByteArray(inputFile);

		// Webp byte array:
		byte[] webpImageBytes = WebpUtils.imageBytesToWebpBytes(imageBytes);

		File webpOutputFile = new File("/Volumes/New/Test/output/webpFile2.webp");

		FileUtils.writeByteArrayToFile(webpOutputFile, webpImageBytes);
		System.out.println("Done!");
	} 
}