org.apache.xmlgraphics.util.io.ASCII85Constants Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id: ASCII85Constants.java 1732018 2016-02-24 04:51:06Z gadams $ */
package org.apache.xmlgraphics.util.io;
/**
* This interface defines constants used by the ASCII85 filters.
*
* @version $Id: ASCII85Constants.java 1732018 2016-02-24 04:51:06Z gadams $
*/
public interface ASCII85Constants {
/** Special character "z" stands for four NULL bytes (short-cut for !!!!!) */
int ZERO = 0x7A; //"z"
/** ZERO as a byte array */
byte[] ZERO_ARRAY = {(byte)ZERO};
/** The start index for ASCII85 characters (!) */
int START = 0x21; //"!"
/** The end index for ASCII85 characters (u) */
int END = 0x75; //"u"
/** The EOL indicator (LF) */
int EOL = 0x0A; //"\n"
/** The EOD (end of data) indicator */
byte[] EOD = {0x7E, 0x3E}; //"~>"
/** Array of powers of 85 (4, 3, 2, 1, 0) */
long[] POW85 = new long[] {85 * 85 * 85 * 85,
85 * 85 * 85,
85 * 85,
85,
1};
/*
long BASE85_4 = 85;
long BASE85_3 = BASE85_4 * BASE85_4;
long BASE85_2 = BASE85_3 * BASE85_4;
long BASE85_1 = BASE85_2 * BASE85_4;
*/
}