Package javax.imageio

Examples of javax.imageio.ImageWriter

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      if (type == IMAGE_PNG) {
        throw new UnsupportedOperationException(
            "PNG compression not implemented");
      }
      Iterator iter = ImageIO.getImageWritersByFormatName("jpg");
      ImageWriter writer;
      writer = (ImageWriter) iter.next();
      ImageOutputStream ios = ImageIO.createImageOutputStream(new File(
          toFileName));
      writer.setOutput(ios);
      ImageWriteParam iwparam = new JPEGImageWriteParam(Locale
          .getDefault());
      iwparam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
      iwparam.setCompressionQuality(0.7F);
      writer.write(null, new IIOImage(image, null, null), iwparam);
      ios.flush();
      writer.dispose();
      ios.close();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
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     * @throws Exception if an error prevents image encoding
     */
    public void saveImage(String mimeType, BufferedImage image, OutputStream os)
            throws Exception {

        ImageWriter writer = null;
        Iterator iter = javax.imageio.ImageIO.getImageWritersByMIMEType(mimeType);
        if (iter.hasNext()) {
            writer = (ImageWriter) iter.next();
        }
        ImageOutputStream ios = javax.imageio.ImageIO.createImageOutputStream(os);
        writer.setOutput(ios);

        writer.write(new IIOImage(image, null, null));
        ios.flush();
        writer.dispose();
    } // saveImage
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    private static boolean writeImage(BufferedImage image, String imageFormat, Object outputStream, int resolution)
    throws IOException
    {
        boolean bSuccess = true;
        ImageOutputStream output = null;
        ImageWriter imageWriter = null;
        try
        {
            output = ImageIO.createImageOutputStream( outputStream );
   
            boolean foundWriter = false;
            Iterator<ImageWriter> writerIter = ImageIO.getImageWritersByFormatName( imageFormat );
            while( writerIter.hasNext() && !foundWriter )
            {
                try
                {
                    imageWriter = (ImageWriter)writerIter.next();
                    ImageWriteParam writerParams = imageWriter.getDefaultWriteParam();
                    if( writerParams.canWriteCompressed() )
                    {
                        writerParams.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
                        // reset the compression type if overwritten by setCompressionMode
                        if (writerParams.getCompressionType() == null)
                        {
                            writerParams.setCompressionType(writerParams.getCompressionTypes()[0]);
                        }
                        writerParams.setCompressionQuality(1.0f);
                    }
                    IIOMetadata meta = createMetadata( image, imageWriter, writerParams, resolution);
                    imageWriter.setOutput( output );
                    imageWriter.write( null, new IIOImage( image, null, meta ), writerParams );
                    foundWriter = true;
                }
                catch( IIOException io )
                {
                    throw new IOException( io.getMessage() );
                }
                finally
                {
                    if( imageWriter != null )
                    {
                        imageWriter.dispose();
                    }
                }
            }
            if( !foundWriter )
            {
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        }
       
        java.io.OutputStream os = getCOSStream().createFilteredStream();
        try
        {
            ImageWriter writer = null;
            Iterator<ImageWriter> iter = ImageIO.getImageWritersByFormatName(JPG);
            if (iter.hasNext())
            {
                writer = iter.next();
            }
            ImageOutputStream ios = ImageIO.createImageOutputStream(os);
            writer.setOutput(ios);
               
            // Set the compression quality
            JPEGImageWriteParam iwparam = new JPEGImageWriteParam(Locale.getDefault());
            iwparam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            iwparam.setCompressionQuality(compressionQuality);
               
            // Write the image
            writer.write(null, new IIOImage(bi, null, null), iwparam);
               
            writer.dispose();
           
            COSDictionary dic = getCOSStream();
            dic.setItem( COSName.FILTER, COSName.DCT_DECODE );
            dic.setItem( COSName.SUBTYPE, COSName.IMAGE);
            dic.setItem( COSName.TYPE, COSName.XOBJECT );
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    public void writeTo(Object obj, String mimeType, OutputStream os) throws IOException {
        Iterator i = ImageIO.getImageWritersByMIMEType(mimeType);
        if (!i.hasNext()) {
            throw new UnsupportedDataTypeException();
        }
        ImageWriter writer = (ImageWriter) i.next();
        writer.setOutput(os);

        if (obj instanceof RenderedImage) {
            writer.write((RenderedImage) obj);
        } else if (obj instanceof BufferedImage) {
            BufferedImage buffered = (BufferedImage) obj;
            writer.write(new IIOImage(buffered.getRaster(), null, null));
        } else if (obj instanceof Image) {
            Image image = (Image) obj;
            BufferedImage buffered = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_ARGB);
            Graphics2D graphics = buffered.createGraphics();
            graphics.drawImage(image, 0, 0, null, null);
            writer.write(new IIOImage(buffered.getRaster(), null, null));
        } else {
            throw new UnsupportedDataTypeException();
        }
        os.flush();
    }
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     * @throws Exception if an error prevents image encoding
     */
    public void saveImage(String mimeType, BufferedImage image, OutputStream os)
            throws Exception {

        ImageWriter writer = null;
        Iterator iter = javax.imageio.ImageIO.getImageWritersByMIMEType(mimeType);
        if (iter.hasNext()) {
            writer = (ImageWriter) iter.next();
        }
        ImageOutputStream ios = javax.imageio.ImageIO.createImageOutputStream(os);
        writer.setOutput(ios);

        writer.write(new IIOImage(image, null, null));
        ios.flush();
        writer.dispose();
    } // saveImage
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    public void writeTo(Object obj, String mimeType, OutputStream os) throws IOException {
        Iterator i = ImageIO.getImageWritersByMIMEType(mimeType);
        if (!i.hasNext()) {
            throw new UnsupportedDataTypeException();
        }
        ImageWriter writer = (ImageWriter) i.next();
        writer.setOutput(os);

        if (obj instanceof RenderedImage) {
            writer.write((RenderedImage) obj);
        } else if (obj instanceof BufferedImage) {
            BufferedImage buffered = (BufferedImage) obj;
            writer.write(new IIOImage(buffered.getRaster(), null, null));
        } else if (obj instanceof Image) {
            Image image = (Image) obj;
            BufferedImage buffered = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_ARGB);
            Graphics2D graphics = buffered.createGraphics();
            graphics.drawImage(image, 0, 0, null, null);
            writer.write(new IIOImage(buffered.getRaster(), null, null));
        } else {
            throw new UnsupportedDataTypeException();
        }
        os.flush();
    }
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    private void writeEmbedded(IIOImage image,
                               ImageWriteParam bmpParam) throws IOException {
        String format =
            compressionType == BMPConstants.BI_JPEG ? "jpeg" : "png";
        Iterator iterator = ImageIO.getImageWritersByFormatName(format);
        ImageWriter writer = null;
        if (iterator.hasNext())
            writer = (ImageWriter)iterator.next();
        if (writer != null) {
            if (embedded_stream == null) {
                throw new RuntimeException("No stream for writing embedded image!");
            }

            writer.addIIOWriteProgressListener(new IIOWriteProgressAdapter() {
                    public void imageProgress(ImageWriter source, float percentageDone) {
                        processImageProgress(percentageDone);
                    }
                });

            writer.addIIOWriteWarningListener(new IIOWriteWarningListener() {
                    public void warningOccurred(ImageWriter source, int imageIndex, String warning) {
                        processWarningOccurred(imageIndex, warning);
                    }
                });

            writer.setOutput(ImageIO.createImageOutputStream(embedded_stream));
            ImageWriteParam param = writer.getDefaultWriteParam();
            //param.setDestinationBands(bmpParam.getDestinationBands());
            param.setDestinationOffset(bmpParam.getDestinationOffset());
            param.setSourceBands(bmpParam.getSourceBands());
            param.setSourceRegion(bmpParam.getSourceRegion());
            param.setSourceSubsampling(bmpParam.getSourceXSubsampling(),
                                       bmpParam.getSourceYSubsampling(),
                                       bmpParam.getSubsamplingXOffset(),
                                       bmpParam.getSubsamplingYOffset());
            writer.write(null, image, param);
        } else
            throw new RuntimeException(I18N.getString("BMPImageWrite5") + " " + format);

    }
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            im = result;
        }

        // obtain the writer for the image
        // this must work since it is already done in the #getImageType(String) call above
        ImageWriter writer = (ImageWriter)ImageIO.getImageWritersByFormatName(formatName).next();

        // get default image writer parameter
        ImageWriteParam param = writer.getDefaultWriteParam();
        if (param.canWriteCompressed()) {
            // set compression parameters if supported by writer
            param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            if ((param.getCompressionTypes() != null) && (param.getCompressionType() == null)) {
                // a compression parameter is required but not provided, use the first one available
                param.setCompressionType(param.getCompressionTypes()[0]);
            }
            param.setCompressionQuality(m_renderSettings.getCompressionQuality());
        }

        // now write the image
        writer.setOutput(stream);
        writer.write(null, new IIOImage(im, null, null), param);
        stream.flush();
        writer.dispose();
        stream.close();
    }
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     * @param image
     * @param os
     * @throws Exception
     */
    public static void storeImage(String mimeType, Image image, OutputStream os) throws Exception {
        ImageWriter imageWriter = null;
        BufferedImage bufferedImage = (BufferedImage) image;
       
        Iterator iterator = javax.imageio.ImageIO.getImageWritersByMIMEType(mimeType);
        if (iterator.hasNext()) {
          imageWriter = (ImageWriter) iterator.next();
        }
        ImageOutputStream ios = javax.imageio.ImageIO.createImageOutputStream(os);
        imageWriter.setOutput(ios);

        imageWriter.write(new IIOImage(bufferedImage, null, null));
        ios.flush();
        imageWriter.dispose();
    }
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