Examples of ImageOutputStream

ae.javax.imageio.stream.ImageOutputStream
A seekable output stream interface for use by ImageWriters. Various output destinations, such as OutputStreams and Files, as well as future fast I/O destinations may be "wrapped" by a suitable implementation of this interface for use by the Image I/O API.
Unlike a standard OutputStream, ImageOutputStream extends its counterpart, ImageInputStream. Thus it is possible to read from the stream as it is being written. The same seek and flush positions apply to both reading and writing, although the semantics for dealing with a non-zero bit offset before a byte-aligned write are necessarily different from the semantics for dealing with a non-zero bit offset before a byte-aligned read. When reading bytes, any bit offset is set to 0 before the read; when writing bytes, a non-zero bit offset causes the remaining bits in the byte to be written as 0s. The byte-aligned write then starts at the next byte position. @see ImageInputStream
com.google.code.appengine.imageio.stream.ImageOutputStream
javax.imageio.stream.ImageOutputStream
A seekable output stream interface for use by ImageWriters. Various output destinations, such as OutputStreams and Files, as well as future fast I/O destinations may be "wrapped" by a suitable implementation of this interface for use by the Image I/O API.
Unlike a standard OutputStream, ImageOutputStream extends its counterpart, ImageInputStream. Thus it is possible to read from the stream as it is being written. The same seek and flush positions apply to both reading and writing, although the semantics for dealing with a non-zero bit offset before a byte-aligned write are necessarily different from the semantics for dealing with a non-zero bit offset before a byte-aligned read. When reading bytes, any bit offset is set to 0 before the read; when writing bytes, a non-zero bit offset causes the remaining bits in the byte to be written as 0s. The byte-aligned write then starts at the next byte position. @see ImageInputStream

Examples of javax.imageio.stream.ImageOutputStream

     * @throws IOException if an I/O error occurs
     */
    public static boolean writeImage(BufferedImage image, String formatName, OutputStream output,
            int dpi, float quality) throws IOException
    {
        ImageOutputStream imageOutput = null;
        ImageWriter writer = null;
        try
        {
            // find suitable image writer
            Iterator<ImageWriter> writers = ImageIO.getImageWritersByFormatName(formatName);
            ImageWriteParam param = null;
            IIOMetadata metadata = null;
            // Loop until we get the best driver, i.e. one that supports
            // setting dpi in the standard metadata format; however we'd also 
            // accept a driver that can't, if a better one can't be found
            while (writers.hasNext())
            {
                if (writer != null)
                {
                    writer.dispose();
                }
                writer = writers.next();
                param = writer.getDefaultWriteParam();
                metadata = writer.getDefaultImageMetadata(new ImageTypeSpecifier(image), param);
                if (metadata != null
                        && !metadata.isReadOnly()
                        && metadata.isStandardMetadataFormatSupported())
                {
                    break;
                }
            }
            if (writer == null)
            {
                LOG.error("No ImageWriter found for '" + formatName + "' format");
                StringBuilder sb = new StringBuilder();
                String[] writerFormatNames = ImageIO.getWriterFormatNames();
                for (String fmt : writerFormatNames)
                {
                    sb.append(fmt);
                    sb.append(' ');
                }
                LOG.error("Supported formats: " + sb);
                return false;
            }


            // compression
            if (param != null && param.canWriteCompressed())
            {
                param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
                if (formatName.toLowerCase().startsWith("tif"))
                {
                    // TIFF compression
                    TIFFUtil.setCompressionType(param, image);
                }
                else
                {
                    param.setCompressionType(param.getCompressionTypes()[0]);
                    param.setCompressionQuality(quality);
                }
            }


            if (formatName.toLowerCase().startsWith("tif"))
            {
                // TIFF metadata
                TIFFUtil.updateMetadata(metadata, image, dpi);
            }
            else if ("jpeg".equals(formatName.toLowerCase())
                    || "jpg".equals(formatName.toLowerCase()))
            {
                // This segment must be run before other meta operations,
                // or else "IIOInvalidTreeException: Invalid node: app0JFIF"
                // The other (general) "meta" methods may not be used, because
                // this will break the reading of the meta data in tests
                JPEGUtil.updateMetadata(metadata, dpi);
            }
            else
            {
                // write metadata is possible
                if (metadata != null
                        && !metadata.isReadOnly()
                        && metadata.isStandardMetadataFormatSupported())
                {
                    setDPI(metadata, dpi, formatName);
                }
            }


            // write
            imageOutput = ImageIO.createImageOutputStream(output);
            writer.setOutput(imageOutput);
            writer.write(null, new IIOImage(image, null, metadata), param);
        }
        finally
        {
            if (writer != null)
            {
                writer.dispose();
            }
            if (imageOutput != null)
            {
                imageOutput.close();
            }
        }
        return true;
    }

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Examples of javax.imageio.stream.ImageOutputStream


    private static void encodeImageToJPEGStream(BufferedImage image, float quality, int dpi,
                                                OutputStream out) throws IOException
    {
        // encode to JPEG
        ImageOutputStream ios = null;
        ImageWriter imageWriter = null;
        try
        {
            // find JAI writer
            imageWriter = ImageIO.getImageWritersBySuffix("jpeg").next();
            ios = ImageIO.createImageOutputStream(out);
            imageWriter.setOutput(ios);


            // add compression
            JPEGImageWriteParam jpegParam = (JPEGImageWriteParam)imageWriter.getDefaultWriteParam();
            jpegParam.setCompressionMode(JPEGImageWriteParam.MODE_EXPLICIT);
            jpegParam.setCompressionQuality(quality);


            // add metadata
            ImageTypeSpecifier imageTypeSpecifier = new ImageTypeSpecifier(image);
            IIOMetadata data = imageWriter.getDefaultImageMetadata(imageTypeSpecifier, jpegParam);
            Element tree = (Element)data.getAsTree("javax_imageio_jpeg_image_1.0");
            Element jfif = (Element)tree.getElementsByTagName("app0JFIF").item(0);
            jfif.setAttribute("Xdensity", Integer.toString(dpi));
            jfif.setAttribute("Ydensity", Integer.toString(dpi));
            jfif.setAttribute("resUnits", "1"); // 1 = dots/inch


            // write
            imageWriter.write(data, new IIOImage(image, null, null), jpegParam);
        }
        finally
        {
            // clean up
            IOUtils.closeQuietly(out);
            if (ios != null)
            {
                ios.close();
            }
            if (imageWriter != null)
            {
                imageWriter.dispose();
            }

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Examples of javax.imageio.stream.ImageOutputStream

    
      Iterator writers = ImageIO.getImageWritersByFormatName("png");
      ImageWriter writer = (ImageWriter)writers.next();
      
      File f = new File(filename);
      ImageOutputStream ios;
    try
    {
      //System.out.println("trying to create stream and write...");
      ios = ImageIO.createImageOutputStream(f);
        writer.setOutput(ios);

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Examples of javax.imageio.stream.ImageOutputStream

            final ByteArrayOutputStream out = new ByteArrayOutputStream();


            byte[] imageBytes = null;
            try {


                ImageOutputStream imageOut = ImageIO.createImageOutputStream(out);
                writer.setOutput(imageOut);
                writer.write(image);
                imageOut.close();
                imageBytes = out.toByteArray();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return imageBytes;

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Examples of javax.imageio.stream.ImageOutputStream

                ByteArrayOutputStream baos = new ByteArrayOutputStream();
                ImageWriteParam iwparam = new JPEGImageWriteParam(Locale.getDefault());
                iwparam.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
                iwparam.setCompressionQuality(jpegQuality);//Set here your compression rate
                ImageWriter iw = ImageIO.getImageWritersByFormatName("jpg").next();
                ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
                iw.setOutput(ios);
                iw.write(null, new IIOImage(scaled, null, null), iwparam);
                iw.dispose();
                ios.close();


                scaled.flush();
                scaled = null;
                image = com.itextpdf.text.Image.getInstance(baos.toByteArray());

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Examples of javax.imageio.stream.ImageOutputStream

            Iterator i = ImageIO.getImageWritersByMIMEType(type);
            if (i.hasNext()) {
                writer = (ImageWriter)i.next();
            }
            if (writer != null) {
                ImageOutputStream stream = null;
                stream = ImageIO.createImageOutputStream(os);
                writer.setOutput(stream);
                writer.write(bufImage);
                writer.dispose();
                stream.close();
            } else {
                log.log(Level.SEVERE, "SAAJ0526.soap.unsupported.mime.type",
                    new String[] { type });
                throw new IOException("Unsupported mime type:"+ type);
            }

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Examples of javax.imageio.stream.ImageOutputStream

    public static boolean writeImage(BufferedImage image, String imageFormat, Object outputStream, int resolution, 
            float quality)
    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(quality);
                    }
                    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 )
            {
                bSuccess = false;
            }
        }
        finally
        {
            if( output != null )
            {
                output.flush();
                output.close();
            }
        }
        return bSuccess;
    }

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Examples of javax.imageio.stream.ImageOutputStream

            scaledImage = image;
        }


        File f = new File(root, name);


        ImageOutputStream out = new FileImageOutputStream(f);


        format.setOutput(out);
        format.write(scaledImage);
        out.flush();
        out.close();
    }

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Examples of javax.imageio.stream.ImageOutputStream

            TiledImage tiled = null;
            if (formcov!= null)
              tiled = new TiledImage(formcov,width,height);
            else
              tiled = new TiledImage(image,width,height);
            final ImageOutputStream imageOutStream = ImageIO.createImageOutputStream(out);
            final ImageWriter writer = writerSPI.createWriterInstance();
            writer.setOutput(imageOutStream);
            writer.write(tiled);
            imageOutStream.flush();
            imageOutStream.close();
          }
          else
          {
            throw new ServiceException("Cannot render to BIL");
          }

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Examples of javax.imageio.stream.ImageOutputStream


    // get a writer
    final ImageWriter writer = writerSPI.createWriterInstance();


    // getting a stream caching in memory
    final ImageOutputStream ioutstream = ImageIO
        .createImageOutputStream(outStream);


    // tiff
    if (LOGGER.isLoggable(Level.FINE)) {
      LOGGER.fine("Writing tiff image ...");
    }


        // get the one required by the GetMapRequest
        final String format = getOutputFormat();


        // do we want it to be 8 bits?
    if (format.equalsIgnoreCase("image/tiff8")
        || (this.mapContext.getPaletteInverter() != null)) {
      image = forceIndexed8Bitmask(image);
    }


    // write it out
    writer.setOutput(ioutstream);
    writer.write(image);
    ioutstream.close();
    writer.dispose();


    if (LOGGER.isLoggable(Level.FINE)) {
      LOGGER.fine("Writing tiff image done!");
    }

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