Java Code Examples for javax.imageio.ImageWriteParam#setCompressionQuality()

private void saveGraphicJpeg(BufferedImage chart, File outputFile, float quality) throws IOException {
    // Setup correct compression for jpeg.
    Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName("jpeg");
    ImageWriter writer = iter.next();
    ImageWriteParam iwp = writer.getDefaultWriteParam();
    iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    iwp.setCompressionQuality(quality);

    // Output the image.
    FileImageOutputStream output = new FileImageOutputStream(outputFile);
    writer.setOutput(output);
    IIOImage image = new IIOImage(chart, null, null);
    writer.write(null, image, iwp);
    writer.dispose();

}
 

public static byte[] imageToBytes(BufferedImage img) {
    ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
    MemoryCacheImageOutputStream outputStream = new MemoryCacheImageOutputStream(byteArrayOutputStream);
    try {
        Iterator iter = ImageIO.getImageWritersByFormatName("jpeg");
        ImageWriter writer = (ImageWriter) iter.next();
        ImageWriteParam iwp = writer.getDefaultWriteParam();
        iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        iwp.setCompressionQuality(IMAGE_QUALITY);
        writer.setOutput(outputStream);
        IIOImage image = new IIOImage(img, null, null);
        writer.write(null, image, iwp);
        writer.dispose();
        byte[] result = byteArrayOutputStream.toByteArray();
        byteArrayOutputStream.close();
        outputStream.close();
        return result;
    } catch (IOException e) {
        StaticLog.error(e);
        return new byte[0];
    }
}
 

/**
 * Encodes an image in JPEG format and writes it to an output stream.
 *
 * @param bufferedImage  the image to be encoded (<code>null</code> not
 *     permitted).
 * @param outputStream  the OutputStream to write the encoded image to
 *     (<code>null</code> not permitted).
 *
 * @throws IOException if there is an I/O problem.
 * @throws NullPointerException if <code>bufferedImage</code> is
 *     <code>null</code>.
 */
@Override
public void encode(BufferedImage bufferedImage, OutputStream outputStream)
        throws IOException {
    ParamChecks.nullNotPermitted(bufferedImage, "bufferedImage");
    ParamChecks.nullNotPermitted(outputStream, "outputStream");
    Iterator iterator = ImageIO.getImageWritersByFormatName("jpeg");
    ImageWriter writer = (ImageWriter) iterator.next();
    ImageWriteParam p = writer.getDefaultWriteParam();
    p.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    p.setCompressionQuality(this.quality);
    ImageOutputStream ios = ImageIO.createImageOutputStream(outputStream);
    writer.setOutput(ios);
    writer.write(null, new IIOImage(bufferedImage, null, null), p);
    ios.flush();
    writer.dispose();
    ios.close();
}
 

public static ImageWriteParam getWriterParam(ImageAttributes attributes,
        ImageWriter writer) {
    try {
        ImageWriteParam param = writer.getDefaultWriteParam();
        if (param.canWriteCompressed()) {
            param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            if (attributes != null && attributes.getCompressionType() != null) {
                param.setCompressionType(attributes.getCompressionType());
            } else {
                String[] compressionTypes = param.getCompressionTypes();
                if (compressionTypes != null) {
                    param.setCompressionType(compressionTypes[0]);
                }
            }
            if (attributes != null && attributes.getQuality() > 0) {
                param.setCompressionQuality(attributes.getQuality() / 100.0f);
            } else {
                param.setCompressionQuality(1.0f);
            }
        }
        return param;
    } catch (Exception e) {
        logger.error(e.toString());
        return null;
    }
}
 

private static ImageWriteParam getOptimizedImageWriteParam(ImageWriter writer, Size scaledSize) {
    ImageWriteParam iwp = writer.getDefaultWriteParam();
    try {
        if (iwp.canWriteCompressed()) {
            iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            int maxSize = Math.max(scaledSize.getWidth(), scaledSize.getHeight());
            if (maxSize <= 50) {
                iwp.setCompressionQuality(0.95f);
            } else if (maxSize <= 100) {
                iwp.setCompressionQuality(0.90f);
            } else if (maxSize <= 200) {
                iwp.setCompressionQuality(0.85f);
            } else if (maxSize <= 500) {
                iwp.setCompressionQuality(0.80f);
            } else {
                iwp.setCompressionQuality(0.75f);
            }
        }
    } catch (Exception e) {
        // bmp can be compressed but don't allow it!!!
        return writer.getDefaultWriteParam();
    }
    return iwp;
}
 

/**
 * Encodes an image in JPEG format and writes it to an output stream.
 *
 * @param bufferedImage  the image to be encoded (<code>null</code> not
 *     permitted).
 * @param outputStream  the OutputStream to write the encoded image to
 *     (<code>null</code> not permitted).
 *
 * @throws IOException if there is an I/O problem.
 * @throws NullPointerException if <code>bufferedImage</code> is
 *     <code>null</code>.
 */
public void encode(BufferedImage bufferedImage, OutputStream outputStream)
        throws IOException {
    if (bufferedImage == null) {
        throw new IllegalArgumentException("Null 'image' argument.");
    }
    if (outputStream == null) {
        throw new IllegalArgumentException("Null 'outputStream' argument.");
    }
    Iterator iterator = ImageIO.getImageWritersByFormatName("jpeg");
    ImageWriter writer = (ImageWriter) iterator.next();
    ImageWriteParam p = writer.getDefaultWriteParam();
    p.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    p.setCompressionQuality(this.quality);
    ImageOutputStream ios = ImageIO.createImageOutputStream(outputStream);
    writer.setOutput(ios);
    writer.write(null, new IIOImage(bufferedImage, null, null), p);
    ios.flush();
    writer.dispose();
    ios.close();
}
 

public static ImageWriteParam getPara(ImageAttributes attributes, ImageWriter writer) {
    try {
        ImageWriteParam param = writer.getDefaultWriteParam();
        if (param.canWriteCompressed()) {
            param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            if (attributes != null && attributes.getCompressionType() != null) {
                param.setCompressionType(attributes.getCompressionType());
            }
            if (attributes != null && attributes.getQuality() > 0) {
                param.setCompressionQuality(attributes.getQuality() / 100.0f);
            } else {
                param.setCompressionQuality(1.0f);
            }
        }
        return param;
    } catch (Exception e) {
        logger.error(e.toString());
        return null;
    }
}
 

/**
 * Encodes an image in JPEG format and writes it to an output stream.
 *
 * @param bufferedImage  the image to be encoded (<code>null</code> not
 *     permitted).
 * @param outputStream  the OutputStream to write the encoded image to
 *     (<code>null</code> not permitted).
 *
 * @throws IOException if there is an I/O problem.
 * @throws NullPointerException if <code>bufferedImage</code> is
 *     <code>null</code>.
 */
@Override
public void encode(BufferedImage bufferedImage, OutputStream outputStream)
        throws IOException {
    ParamChecks.nullNotPermitted(bufferedImage, "bufferedImage");
    ParamChecks.nullNotPermitted(outputStream, "outputStream");
    Iterator iterator = ImageIO.getImageWritersByFormatName("jpeg");
    ImageWriter writer = (ImageWriter) iterator.next();
    ImageWriteParam p = writer.getDefaultWriteParam();
    p.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    p.setCompressionQuality(this.quality);
    ImageOutputStream ios = ImageIO.createImageOutputStream(outputStream);
    writer.setOutput(ios);
    writer.write(null, new IIOImage(bufferedImage, null, null), p);
    ios.flush();
    writer.dispose();
    ios.close();
}
 

/**
 * BufferedImageをJPEG形式にエンコードします
 *
 * @param image BufferedImage
 * @return JPEG形式の画像
 * @throws IOException 入出力例外
 */
static byte[] encodeJpeg(BufferedImage image) throws IOException {
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    try (ImageOutputStream ios = ImageIO.createImageOutputStream(out)) {
        ImageWriter writer = ImageIO.getImageWritersByFormatName("jpg").next();
        try {
            ImageWriteParam iwp = writer.getDefaultWriteParam();
            if (iwp.canWriteCompressed()) {
                iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
                iwp.setCompressionQuality(QUALITY);
            }
            writer.setOutput(ios);
            writer.write(null, new IIOImage(image, null, null), iwp);
        } finally {
            writer.dispose();
        }
    }
    return out.toByteArray();
}
 

/**
 * Encodes an image in JPEG format and writes it to an output stream.
 *
 * @param bufferedImage  the image to be encoded (<code>null</code> not
 *     permitted).
 * @param outputStream  the OutputStream to write the encoded image to
 *     (<code>null</code> not permitted).
 *
 * @throws IOException if there is an I/O problem.
 * @throws NullPointerException if <code>bufferedImage</code> is
 *     <code>null</code>.
 */
@Override
public void encode(BufferedImage bufferedImage, OutputStream outputStream)
        throws IOException {
    ParamChecks.nullNotPermitted(bufferedImage, "bufferedImage");
    ParamChecks.nullNotPermitted(outputStream, "outputStream");
    Iterator iterator = ImageIO.getImageWritersByFormatName("jpeg");
    ImageWriter writer = (ImageWriter) iterator.next();
    ImageWriteParam p = writer.getDefaultWriteParam();
    p.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    p.setCompressionQuality(this.quality);
    ImageOutputStream ios = ImageIO.createImageOutputStream(outputStream);
    writer.setOutput(ios);
    writer.write(null, new IIOImage(bufferedImage, null, null), p);
    ios.flush();
    writer.dispose();
    ios.close();
}
 

/**
 * Encodes an image in JPEG format and writes it to an output stream.
 *
 * @param bufferedImage  the image to be encoded (<code>null</code> not
 *     permitted).
 * @param outputStream  the OutputStream to write the encoded image to
 *     (<code>null</code> not permitted).
 *
 * @throws IOException if there is an I/O problem.
 * @throws NullPointerException if <code>bufferedImage</code> is
 *     <code>null</code>.
 */
@Override
public void encode(BufferedImage bufferedImage, OutputStream outputStream)
        throws IOException {
    ParamChecks.nullNotPermitted(bufferedImage, "bufferedImage");
    ParamChecks.nullNotPermitted(outputStream, "outputStream");
    Iterator iterator = ImageIO.getImageWritersByFormatName("jpeg");
    ImageWriter writer = (ImageWriter) iterator.next();
    ImageWriteParam p = writer.getDefaultWriteParam();
    p.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    p.setCompressionQuality(this.quality);
    ImageOutputStream ios = ImageIO.createImageOutputStream(outputStream);
    writer.setOutput(ios);
    writer.write(null, new IIOImage(bufferedImage, null, null), p);
    ios.flush();
    writer.dispose();
    ios.close();
}
 

private void compressJpeg(BufferedImage bufferedImage, CompoundDirectory exif, float quality, File targetFile) throws IOException {
    ImageWriter jpgWriter = ImageIO.getImageWritersByFormatName("jpg").next();
    ImageWriteParam jpgWriteParam = jpgWriter.getDefaultWriteParam();
    jpgWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    jpgWriteParam.setCompressionQuality(quality);

    ImageWriter writer = null;
    try (ImageOutputStream outputStream = new FileImageOutputStream(targetFile)) {
        writer = ImageIO.getImageWritersByFormatName("jpg").next();
        writer.setOutput(outputStream);
        writer.write(null, new IIOImage(bufferedImage, null, null), jpgWriteParam);
    } finally {
        if (writer != null) writer.dispose();
    }
}
 

/**
 * Test method for
 * {@link com.luciad.imageio.webp.WebPWriter#write(javax.imageio.metadata.IIOMetadata, javax.imageio.IIOImage, javax.imageio.ImageWriteParam)}
 * .
 *
 * @throws IOException
 */
@Test(dataProvider = "createImagesWithCompressionOptions", enabled = true)
public void testImageWriterCompression(final RenderedImage im, final String compressionType,
      final float compressionQuality, final String outputName) throws IOException {
   final String extension = outputName.substring(outputName.lastIndexOf(".") + 1);

   // get writer
   final ImageWriter imgWriter = ImageIO.getImageWritersByFormatName(extension).next();
   final ImageWriteParam imgWriteParams = new WebPWriteParam(null);
   imgWriteParams.setCompressionType(compressionType);
   // 0~1
   imgWriteParams.setCompressionQuality(compressionQuality);
   final String testName = "CompressionOptions";
   final File file = createOutputFile(testName, outputName);
   final ImageOutputStream imageOutputStream = ImageIO.createImageOutputStream(file);
   try {
      imgWriter.setOutput(imageOutputStream);
      imgWriter.write(null, new IIOImage(im, null, null), imgWriteParams);
      final int length = (int) imageOutputStream.length();
      assertTrue(length > 0);
   } finally {
      try {
         imageOutputStream.close();
      } catch (final IOException e) {
      }
   }
}
 

@Override
protected void writeFrame(OutputStream out, BufferedImage image,
		Map<String, Object> settings) throws IOException {
	if (image.getType() == BufferedImage.TYPE_INT_ARGB
			|| image.getType() == BufferedImage.TYPE_INT_ARGB_PRE) {
		if (printWarning == false) {
			printWarning = true;
			System.err
					.println("JPEGMovWriter Warning: a BufferedImage of type TYPE_INT_ARGB may produce unexpected results. The recommended type is TYPE_INT_RGB.");
		}
	}
	float quality;
	if (settings != null
			&& settings.get(PROPERTY_QUALITY) instanceof Number) {
		quality = ((Number) settings.get(PROPERTY_QUALITY)).floatValue();
	} else if (settings != null
			&& settings.get(PROPERTY_QUALITY) instanceof String) {
		quality = Float.parseFloat((String) settings.get(PROPERTY_QUALITY));
	} else {
		quality = defaultQuality;
	}

	MemoryCacheImageOutputStream iOut = new MemoryCacheImageOutputStream(
			out);
	ImageWriter iw = ImageIO.getImageWritersByMIMEType("image/jpeg").next();
	ImageWriteParam iwParam = iw.getDefaultWriteParam();
	iwParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
	iwParam.setCompressionQuality(quality);
	iw.setOutput(iOut);
	IIOImage img = new IIOImage(image, null, null);
	iw.write(null, img, iwParam);
}
 

@Override
   public void write(AwtImage image, ImageMetadata metadata, OutputStream out) throws IOException {

      javax.imageio.ImageWriter writer = ImageIO.getImageWritersByFormatName("jpeg").next();
      ImageWriteParam params = writer.getDefaultWriteParam();
      if (compression < 100) {
         params.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
         params.setCompressionQuality(compression / 100f);
      }
      if (progressive) {
         params.setProgressiveMode(ImageWriteParam.MODE_DEFAULT);
      } else {
         params.setProgressiveMode(ImageWriteParam.MODE_DISABLED);
      }

      // in openjdk, awt cannot write out jpegs that have a transparency bit, even if that is set to 255.
      // see http://stackoverflow.com/questions/464825/converting-transparent-gif-png-to-jpeg-using-java
      // so have to convert to a non alpha type
      BufferedImage noAlpha;
      if (image.awt().getColorModel().hasAlpha()) {
         noAlpha = image.toImmutableImage().removeTransparency(java.awt.Color.WHITE).toNewBufferedImage(BufferedImage.TYPE_INT_RGB);
      } else {
         noAlpha = image.awt();
      }

      MemoryCacheImageOutputStream output = new MemoryCacheImageOutputStream(out);
      writer.setOutput(output);
      writer.write(null, new IIOImage(noAlpha, null, null), params);
      output.close();
      writer.dispose();
//        IOUtils.closeQuietly(out);
   }
 

private void writeJPG(BufferedImage bufferedImage, OutputStream outputStream, double quality) throws IOException {
    Iterator<ImageWriter> iterator =
        ImageIO.getImageWritersByFormatName("jpg");
    ImageWriter imageWriter = iterator.next();
    ImageWriteParam imageWriteParam = imageWriter.getDefaultWriteParam();
    imageWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    imageWriteParam.setCompressionQuality((float) quality);
    ImageOutputStream imageOutputStream = new MemoryCacheImageOutputStream(outputStream);
    imageWriter.setOutput(imageOutputStream);
    IIOImage iioimage = new IIOImage(bufferedImage, null, null);
    imageWriter.write(null, iioimage, imageWriteParam);
    imageOutputStream.flush();
}
 

/**
 * Shrink a PDF
 * @param f {@code File} pointing to the PDF to shrink
 * @param compQual Compression quality parameter. 0 is
 *                 smallest file, 1 is highest quality.
 * @return The compressed {@code PDDocument}
 * @throws FileNotFoundException
 * @throws IOException 
 */
private PDDocument shrinkMe() 
        throws FileNotFoundException, IOException {
     if(compQual < 0)
         compQual = compQualDefault;
     final RandomAccessBufferedFileInputStream rabfis = 
             new RandomAccessBufferedFileInputStream(input);
     final PDFParser parser = new PDFParser(rabfis);
     parser.parse();
     final PDDocument doc = parser.getPDDocument();
     final PDPageTree pages = doc.getPages();
     final ImageWriter imgWriter;
     final ImageWriteParam iwp;
     if(tiff) {
         final Iterator<ImageWriter> tiffWriters =
               ImageIO.getImageWritersBySuffix("png");
         imgWriter = tiffWriters.next();
         iwp = imgWriter.getDefaultWriteParam();
         //iwp.setCompressionMode(ImageWriteParam.MODE_DISABLED);
     } else {
         final Iterator<ImageWriter> jpgWriters = 
               ImageIO.getImageWritersByFormatName("jpeg");
         imgWriter = jpgWriters.next();
         iwp = imgWriter.getDefaultWriteParam();
         iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
         iwp.setCompressionQuality(compQual);
     }
     for(PDPage p : pages) {
          scanResources(p.getResources(), doc, imgWriter, iwp);
     }
     return doc;
}
 

public static void write(BufferedImage image, OutputStream output, float compression) throws IOException {
    ImageWriter jpgWriter = ImageIO.getImageWritersByFormatName("jpg").next();
    ImageOutputStream jpgStream = ImageIO.createImageOutputStream(output);

    // Configure JPEG compression
    ImageWriteParam jpgWriteParam = jpgWriter.getDefaultWriteParam();
    jpgWriteParam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
    jpgWriteParam.setCompressionQuality(compression);

    jpgWriter.setOutput(jpgStream);
    jpgWriter.write(null, new IIOImage(image, null, null), jpgWriteParam);
    jpgWriter.dispose();
    output.flush();
}
 

public void processImage() throws IOException, UnableToProcessTheImage {
    if (base64RawContent != null && base64RawThumbnail != null) {
        return;
    }
    try {
        BufferedImage image = ImageIO.read(new ByteArrayInputStream(rawContents));
        if (image == null) {
            throw new UnableToProcessTheImage();
        }
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();

        // calculate resize factor
        double resizeFactor =
                Math.min((double) OUTPUT_PHOTO_WIDTH / image.getWidth(), (double) OUTPUT_PHOTO_HEIGHT / image.getHeight());

        if (resizeFactor == 1) {
            compressedContents = rawContents;
        } else {
            // resize image
            AffineTransform tx = new AffineTransform();
            tx.scale(resizeFactor, resizeFactor);
            AffineTransformOp op = new AffineTransformOp(tx, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
            image = op.filter(image, null);

            // set compression
            ImageWriter writer =
                    ImageIO.getImageWritersByMIMEType(ContentType.getContentType(contentType).getMimeType()).next();
            ImageWriteParam param = writer.getDefaultWriteParam();
            if (contentType.equals(ContentType.JPG)) {
                param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
                param.setCompressionQuality(1);
            }

            // write to stream
            writer.setOutput(ImageIO.createImageOutputStream(outputStream));
            writer.write(null, new IIOImage(image, null, null), param);
            compressedContents = outputStream.toByteArray();
        }
    } catch (final CMMException ex) {
        throw new UnableToProcessTheImage();
    }

}
 

public static boolean getParaMeta(long interval, boolean loop,
        GIFImageWriter gifWriter, ImageWriteParam param,
        GIFImageMetadata metaData) {
    try {

        param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
        param.setCompressionType("LZW");
        param.setCompressionQuality(1);

        String delay;
        if (interval > 0) {
            delay = interval / 10 + "";
        } else {
            delay = "100";
        }
        String format = metaData.getNativeMetadataFormatName();
        IIOMetadataNode tree = (IIOMetadataNode) metaData.getAsTree(format);
        IIOMetadataNode graphicsControlExtensionNode = new IIOMetadataNode("GraphicControlExtension");
        graphicsControlExtensionNode.setAttribute("delayTime", delay);
        graphicsControlExtensionNode.setAttribute("disposalMethod", "restoreToBackgroundColor");
        graphicsControlExtensionNode.setAttribute("userInputFlag", "false");
        graphicsControlExtensionNode.setAttribute("transparentColorFlag", "false");
        graphicsControlExtensionNode.setAttribute("delayTime", delay);
        graphicsControlExtensionNode.setAttribute("transparentColorIndex", "0");
        tree.appendChild(graphicsControlExtensionNode);
        if (loop) {
            IIOMetadataNode applicationExtensionsNode = new IIOMetadataNode("ApplicationExtensions");
            IIOMetadataNode applicationExtensionNode = new IIOMetadataNode("ApplicationExtension");
            applicationExtensionNode.setAttribute("applicationID", "NETSCAPE");
            applicationExtensionNode.setAttribute("authenticationCode", "2.0");
            byte[] k = {1, 0, 0};
            applicationExtensionNode.setUserObject(k);
            applicationExtensionsNode.appendChild(applicationExtensionNode);
            tree.appendChild(applicationExtensionsNode);
        }
        metaData.mergeTree(format, tree);

        return true;
    } catch (Exception e) {
        logger.error(e.toString());
        return false;
    }
}