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