hi,
there is Java Advance Imaging JAI which can do a lot more for graphic.
JAI Home page http://java.sun.com/products/java-media/jai/index.html
here are jars :
c:\jdk\lib\jai_codec.jar;
c:\jdk\lib\jai_core.jar;
c:\jdk\lib\mlibwrapper_jai.jar
here is example demo from JAI demos.
****************************************************************
/*
* @(#)FormatDemo.java12.2 01/09/21
*
* Copyright (c) 2001 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* -Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduct the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that Software is not designed,licensed or intended for use in
* the design, construction, operation or maintenance of any nuclear facility.
*/
import com.sun.media.jai.codec.FileSeekableStream;
import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.SeekableStream;
public class FormatDemo {
public static void main(String[] args) {
if (args.length < 1) {
System.out.println(
"Format recognizer demo:\n");
System.out.println(
" Given a file, determine which file formats it may be encoded in.");
System.out.println(
" In addition to the standard formats, a \"samplepnm\" codec is");
System.out.println(
" registered.\n");
System.out.println("usage: java FormatDemo <filenames>");
System.exit(0);
}
// Register the sample PNM codec
ImageCodec.registerCodec(new SamplePNMCodec());
try {
for (int i = 0; i < args.length; i++) {
SeekableStream stream = new FileSeekableStream(args);
String[] names = ImageCodec.getDecoderNames(stream);
System.out.println("File " +
args +
" may be in the following format(s):");
for (int j = 0; j < names.length; j++) {
System.out.println("\t" + names[j]);
}
System.out.println();
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
*************************************************************
here is the required helper class to run the above program.
/*
* @(#)SamplePNMCodec.java12.2 01/09/21
*
* Copyright (c) 2001 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* -Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* -Redistribution in binary form must reproduct the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any kind. ALL
* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that Software is not designed,licensed or intended for use in
* the design, construction, operation or maintenance of any nuclear facility.
*/
import java.awt.image.DataBuffer;
import java.awt.image.RenderedImage;
import java.awt.image.SampleModel;
import java.io.BufferedInputStream;
import java.io.InputStream;
import java.io.IOException;
import java.io.OutputStream;
import com.sun.media.jai.codec.ForwardSeekableStream;
import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageDecoder;
import com.sun.media.jai.codec.ImageDecodeParam;
import com.sun.media.jai.codec.ImageEncoder;
import com.sun.media.jai.codec.ImageEncodeParam;
import com.sun.media.jai.codec.PNMEncodeParam;
import com.sun.media.jai.codec.SeekableStream;
/**
* A subclass of <code>ImageCodec</code> that handles the
* PNM family of formats (PBM, PGM, PPM).
*
* <p> The PBM format encodes a single-banded, 1-bit image. The PGM
* format encodes a single-banded image of any bit depth between 1 and
* 32. The PPM format encodes three-banded images of any bit depth
* between 1 and 32. All formats have an ASCII and a raw
* representation.
*
*/
public final class SamplePNMCodec extends ImageCodec {
/** Constructs an instance of <code>SamplePNMCodec</code>. */
public SamplePNMCodec() {}
/** Returns the name of the format handled by this codec. */
public String getFormatName() {
return "samplepnm";
}
/** Returns <code>null</code> since no encoder exists. */
public Class getEncodeParamClass() {
return null;
}
/**
* Returns <code>Object.class</code> since no DecodeParam
* object is required for decoding.
*/
public Class getDecodeParamClass() {
return Object.class;
}
/** Returns true if the image is encodable by this codec. */
public boolean canEncodeImage(RenderedImage im,
ImageEncodeParam param) {
SampleModel sampleModel = im.getSampleModel();
int dataType = sampleModel.getTransferType();
if ((dataType == DataBuffer.TYPE_FLOAT) ||
(dataType == DataBuffer.TYPE_DOUBLE)) {
return false;
}
int numBands = sampleModel.getNumBands();
if (numBands != 1 && numBands != 3) {
return false;
}
return true;
}
/**
* Instantiates a <code>PNMImageEncoder</code> to write to the
* given <code>OutputStream</code>.
*
* @param dst the <code>OutputStream</code> to write to.
* @param param an instance of <code>PNMEncodeParam</code> used to
*control the encoding process, or <code>null</code>. A
*<code>ClassCastException</code> will be thrown if
*<code>param</code> is non-null but not an instance of
*<code>PNMEncodeParam</code>.
*/
protected ImageEncoder createImageEncoder(OutputStream dst,
ImageEncodeParam param) {
PNMEncodeParam p = null;
if (param != null) {
p = (PNMEncodeParam)param; // May throw a ClassCast exception
}
return new SamplePNMImageEncoder(dst, p);
}
/**
* Instantiates a <code>PNMImageDecoder</code> to read from the
* given <code>InputStream</code>.
*
* <p> By overriding this method, <code>PNMCodec</code> is able to
* ensure that a <code>ForwardSeekableStream</code> is used to
* wrap the source <code>InputStream</code> instead of the a
* general (and more expensive) subclass of
* <code>SeekableStream</code>. Since the PNM decoder does not
* require the ability to seek backwards in its input, this allows
* for greater efficiency.
*
* @param src the <code>InputStream</code> to read from.
* @param param an instance of <code>ImageDecodeParam</code> used to
*control the decoding process, or <code>null</code>.
*This parameter is ignored by this class.
*/
protected ImageDecoder createImageDecoder(InputStream src,
ImageDecodeParam param) {
// Add buffering for efficiency
if (!(src instanceof BufferedInputStream)) {
src = new BufferedInputStream(src);
}
return new SamplePNMImageDecoder(new ForwardSeekableStream(src), null);
}
/**
* Instantiates a <code>PNMImageDecoder</code> to read from the
* given <code>SeekableStream</code>.
*
* @param src the <code>SeekableStream</code> to read from.
* @param param an instance of <code>ImageDecodeParam</code> used to
*control the decoding process, or <code>null</code>.
*This parameter is ignored by this class.
*/
protected ImageDecoder createImageDecoder(SeekableStream src,
ImageDecodeParam param) {
return new SamplePNMImageDecoder(src, null);
}
/**
* Returns the number of bytes from the beginning of the data required
* to recognize it as being in PNM format.
*/
public int getNumHeaderBytes() {
return 2;
}
/**
* Returns <code>true</code> if the header bytes indicate PNM format.
*
* @param header an array of bytes containing the initial bytes of the
*input data.*/
public boolean isFormatRecognized(byte[] header) {
return ((header[0] == 'P') &&
(header[1] >= '1') &&
(header[1] <= '6'));
}
}
