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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libjava/] [classpath/] [gnu/] [javax/] [imageio/] [png/] [PNGICCProfile.java] - Blame information for rev 769

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1 769 jeremybenn
/* PNGICCProfile.java --
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   Copyright (C) 2006 Free Software Foundation
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING.  If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library.  Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module.  An independent module is a module which is not derived from
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or based on this library.  If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so.  If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.javax.imageio.png;
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import java.awt.color.ICC_Profile;
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import java.awt.color.ICC_ColorSpace;
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import java.awt.color.ColorSpace;
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import java.io.UnsupportedEncodingException;
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import java.io.IOException;
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import java.io.ByteArrayInputStream;
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import java.util.zip.InflaterInputStream;
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import java.util.zip.Deflater;
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/**
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 * A PNG iCCP (ICC Profile) chunk.
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 */
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public class PNGICCProfile extends PNGChunk
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{
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  private String name;
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  private ICC_Profile profile;
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  // A generic profile name to use "ICC Profile"
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  private static final byte[] genericName = new byte[]
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  { 0x49, 0x43, 0x43, 0x20, 0x50, 0x72, 0x6f, 0x66, 0x69, 0x6c, 0x65 };
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  protected PNGICCProfile( int type, byte[] data, int crc ) throws PNGException
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  {
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    super( type, data, crc );
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    int i = 0;
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    while( data[i++] != 0 )
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      ;
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    try
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      {
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        name = new String(data, 0, i, "8859_1");
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      }
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    catch(UnsupportedEncodingException e)
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      {
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        name = ""; // shouldn't really happen.
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      }
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    if( data[i++] != 0 )
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      throw new PNGException("Can't handle nonzero compression types with iCCP chunks.");
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    try
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      {
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        ByteArrayInputStream bos = new ByteArrayInputStream( data, i,
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                                                             data.length - i );
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        profile = ICC_Profile.getInstance( new InflaterInputStream( bos ) );
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      }
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    catch(IOException ioe)
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      {
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        throw new PNGException("Couldn't read iCCP profile chunk.");
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      }
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    System.out.println("Got profile:"+profile);
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  }
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  public PNGICCProfile( ICC_Profile profile )
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  {
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    super( TYPE_PROFILE );
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    this.profile = profile;
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    byte[] profData = profile.getData();
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    byte[] outData = new byte[ profData.length * 2 ];
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    Deflater deflater = new Deflater();
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    deflater.setInput( profData );
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    deflater.finish();
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    int n = deflater.deflate( outData );
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    data = new byte[ n + 11 + 2 ];
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    System.arraycopy(genericName, 0, data, 0, 11 );
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    data[11] = data[12] = 0; // null separator and compression type.
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    // Copy compressed data
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    System.arraycopy(outData, 0, data, 13, n );
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  }
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  public ColorSpace getColorSpace()
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  {
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    return new ICC_ColorSpace( profile );
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  }
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  public String toString()
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  {
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    return "PNG ICC Profile, name: "+name;
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  }
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}

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