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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/gnu/javax/imageio/png/PNGICCProfile.java
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+/* 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;
+ }
+}