Java Code Examples for javax.imageio.stream.ImageOutputStream#length()

The following examples show how to use javax.imageio.stream.ImageOutputStream#length() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: LeptUtils.java    From lept4j with Apache License 2.0 5 votes vote down vote up 
/**
     * Gets image data of an <code>RenderedImage</code> object.
     *
     * @param image an <code>RenderedImage</code> object
     * @return a byte buffer of image data
     * @throws IOException
     */
    static ByteBuffer getImageByteBuffer(RenderedImage image) throws IOException {
        //Set up the writeParam
        TIFFImageWriteParam tiffWriteParam = new TIFFImageWriteParam(Locale.US);
        tiffWriteParam.setCompressionMode(ImageWriteParam.MODE_DISABLED);

        //Get tif writer and set output to file
        Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(TIFF_FORMAT);

        if (!writers.hasNext()) {
            throw new RuntimeException(JAI_IMAGE_WRITER_MESSAGE);
        }

        ImageWriter writer = writers.next();

        //Get the stream metadata
        IIOMetadata streamMetadata = writer.getDefaultStreamMetadata(tiffWriteParam);

        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        ImageOutputStream ios = ImageIO.createImageOutputStream(outputStream);
        writer.setOutput(ios);
        writer.write(streamMetadata, new IIOImage(image, null, null), tiffWriteParam);
//        writer.write(image);
        writer.dispose();
        ios.seek(0);
        byte[] b = new byte[(int) ios.length()];
        ios.read(b);
        ios.close();

        ByteBuffer buf = ByteBuffer.allocateDirect(b.length);
        buf.order(ByteOrder.nativeOrder());
        buf.put(b);
        ((Buffer) buf).flip();
        return buf;
    }
Example 2
Source File: WebPWriterTest.java    From webp-imageio with Apache License 2.0 5 votes vote down vote up 
/**
 * 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) {
      }
   }
}
Example 3
Source File: WebPWriterTest.java    From webp-imageio with Apache License 2.0 5 votes vote down vote up 
/**
 * Test method tests {@link WebPWriter} with image resize options.
 *
 * @throws IOException
 *            the test fails.
 */
@Test(dataProvider = "createImagesWithScaleOptions", enabled = true)
public void testImageWriterScale(final RenderedImage image, final float xScale,
      final float yScale, final String outputName) throws IOException {
   final String extension = outputName.substring(outputName.lastIndexOf(".") + 1);

   // Scale the image.
   final RenderedOp scaledImage = ScaleDescriptor.create(image, xScale, yScale, 0f, 0f,
         Interpolation.getInstance(Interpolation.INTERP_BICUBIC_2), null);

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