BlackBerry Forums Support Community - compression for images?

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compression for images?

are there any methods or is it possible somehow to set a compression to the encodedImage (jpg/png)?

kind regards

Try this -

Code:

/**

     * Uncompress a previously compressed string;

     * this method is the inverse of the compress method.

     * @param byte array containing compressed data

     * @return uncompressed string

     * @throws IOException if the inflation fails

     */

    public static final byte[] uncompress(final byte[] compressed) throws IOException {

//        String uncompressed = "";

        byte[] result = null;

        try {

            ByteArrayInputStream bais = new ByteArrayInputStream(compressed);

            GZIPInputStream zis = new GZIPInputStream(bais);



            ByteArrayOutputStream baos = new ByteArrayOutputStream();

            int numBytesRead = 0;

            byte[] tempBytes = new byte[DEFAULT_BUFFER_SIZE];

            while ((numBytesRead = zis.read(tempBytes, 0, tempBytes.length)) != -1) {

                baos.write(tempBytes, 0, numBytesRead);

            }



            result = (baos.toByteArray());

        } catch (Exception e) {

            System.out.println("Error while unzip " + e.toString());

        }



        return result;

    }











/**

     * Compress a string

     * @param uncompressed string

     * @return byte array containing compressed data

     * @throws IOException if the deflation fails

     */

    public static final byte[] compress(final byte[] uncompressed) throws IOException {

        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        GZIPOutputStream zos = new GZIPOutputStream(baos);



        byte[] uncompressedBytes = uncompressed;



        zos.write(uncompressedBytes, 0, uncompressedBytes.length);

        zos.close();



        return baos.toByteArray();

    }

i was asking rather about image compression Image compression - Wikipedia, the free encyclopedia

i do not need anything to be zipped and then unzipped. actually i even cannot do that. cause the idea is to make image compression so that it will be smaller, then send it to the server. i do not want to do pack-unpack. cause on the server side i cannot unpack anything. anyway, that is not the idea. You presented the code to pack-unpack, not the real image compression.
anyway, thanks i think Your code maybe usefull for me in the future.

kind regards.

ps.
anyone knows smth about image compression in bb?