Examples of javax.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

    
      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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            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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                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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            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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    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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            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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            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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    // 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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        if (format.equalsIgnoreCase("image/geotiff8") || (this.mapContext.getPaletteInverter() != null)) {
            image = forceIndexed8Bitmask(image);
        }


        // writing it out
        final ImageOutputStream imageOutStream = ImageIO.createImageOutputStream(outStream);
        final GeoTiffWriter writer = new GeoTiffWriter(imageOutStream);
        writer.write(gc, null);
        imageOutStream.flush();
        imageOutStream.close();


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

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        // If the file does not exist or the user gives permission,
        // save image to file.


        ImageWriter writer = null;
        ImageOutputStream ios = null;


        try {
            // Obtain a writer based on the jpeg format.


            Iterator iter;
            iter = ImageIO.getImageWritersByFormatName("jpeg");


            // Validate existence of writer.


            if (!iter.hasNext()) {
                showError("Unable to save image to jpeg file type.");
                return;
            }


            // Extract writer.


            writer = (ImageWriter) iter.next();


            // Configure writer output destination.


            ios = ImageIO.createImageOutputStream(file);
            writer.setOutput(ios);


            // Set JPEG compression quality to 95%.


            ImageWriteParam iwp = writer.getDefaultWriteParam();
            iwp.setCompressionMode(ImageWriteParam.MODE_EXPLICIT);
            iwp.setCompressionQuality(0.95f);


            // Write the image.


            writer.write(null,
                    new IIOImage((BufferedImage) imageArea.getImage(), null, null),
                    iwp);
        } catch (IOException e2) {
            showError(e2.getMessage());
        } finally {
            try {
                // Cleanup.


                if (ios != null) {
                    ios.flush();
                    ios.close();
                }


                if (writer != null) {
                    writer.dispose();
                }

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