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Diffstat (limited to 'awt/javax/imageio/plugins/jpeg/JPEGHuffmanTable.java')
| -rw-r--r-- | awt/javax/imageio/plugins/jpeg/JPEGHuffmanTable.java | 226 |
1 files changed, 0 insertions, 226 deletions
diff --git a/awt/javax/imageio/plugins/jpeg/JPEGHuffmanTable.java b/awt/javax/imageio/plugins/jpeg/JPEGHuffmanTable.java deleted file mode 100644 index 67b504b..0000000 --- a/awt/javax/imageio/plugins/jpeg/JPEGHuffmanTable.java +++ /dev/null @@ -1,226 +0,0 @@ -/* - * 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. - */ - -package javax.imageio.plugins.jpeg; - -/** - * The JPEGHuffmanTable class represents a single JPEG Huffman table. It - * contains the standard tables from the JPEG specification. - * - * @since Android 1.0 - */ -public class JPEGHuffmanTable { - - /** - * The standard DC luminance Huffman table . - */ - public static final JPEGHuffmanTable StdDCLuminance = new JPEGHuffmanTable(new short[] { - 0, 1, 5, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0 - }, new short[] { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0x0A, 0x0B - }, false); - - /** - * The standard DC chrominance Huffman table. - */ - public static final JPEGHuffmanTable StdDCChrominance = new JPEGHuffmanTable(new short[] { - 0, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 - }, new short[] { - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0x0A, 0x0B - }, false); - - /** - * The standard AC luminance Huffman table. - */ - public static final JPEGHuffmanTable StdACLuminance = new JPEGHuffmanTable(new short[] { - 0, 2, 1, 3, 3, 2, 4, 3, 5, 5, 4, 4, 0, 0, 1, 0x7D - }, new short[] { - 0x01, 0x02, 0x03, 0x00, 0x04, 0x11, 0x05, 0x12, 0x21, 0x31, 0x41, 0x06, 0x13, 0x51, - 0x61, 0x07, 0x22, 0x71, 0x14, 0x32, 0x81, 0x91, 0xA1, 0x08, 0x23, 0x42, 0xB1, 0xC1, - 0x15, 0x52, 0xD1, 0xF0, 0x24, 0x33, 0x62, 0x72, 0x82, 0x09, 0x0A, 0x16, 0x17, 0x18, - 0x19, 0x1A, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, - 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, 0x57, - 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, 0x75, - 0x76, 0x77, 0x78, 0x79, 0x7A, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8A, 0x92, - 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, 0xA6, 0xA7, - 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, 0xC2, 0xC3, - 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, 0xD7, 0xD8, - 0xD9, 0xDA, 0xE1, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF1, 0xF2, - 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA - }, false); - - /** - * The standard AC chrominance Huffman table. - */ - public static final JPEGHuffmanTable StdACChrominance = new JPEGHuffmanTable(new short[] { - 0, 2, 1, 2, 4, 4, 3, 4, 7, 5, 4, 4, 0, 1, 2, 0x77 - }, new short[] { - 0x00, 0x01, 0x02, 0x03, 0x11, 0x04, 0x05, 0x21, 0x31, 0x06, 0x12, 0x41, 0x51, 0x07, - 0x61, 0x71, 0x13, 0x22, 0x32, 0x81, 0x08, 0x14, 0x42, 0x91, 0xA1, 0xB1, 0xC1, 0x09, - 0x23, 0x33, 0x52, 0xF0, 0x15, 0x62, 0x72, 0xD1, 0x0A, 0x16, 0x24, 0x34, 0xE1, 0x25, - 0xF1, 0x17, 0x18, 0x19, 0x1A, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x35, 0x36, 0x37, 0x38, - 0x39, 0x3A, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4A, 0x53, 0x54, 0x55, 0x56, - 0x57, 0x58, 0x59, 0x5A, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6A, 0x73, 0x74, - 0x75, 0x76, 0x77, 0x78, 0x79, 0x7A, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, - 0x8A, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9A, 0xA2, 0xA3, 0xA4, 0xA5, - 0xA6, 0xA7, 0xA8, 0xA9, 0xAA, 0xB2, 0xB3, 0xB4, 0xB5, 0xB6, 0xB7, 0xB8, 0xB9, 0xBA, - 0xC2, 0xC3, 0xC4, 0xC5, 0xC6, 0xC7, 0xC8, 0xC9, 0xCA, 0xD2, 0xD3, 0xD4, 0xD5, 0xD6, - 0xD7, 0xD8, 0xD9, 0xDA, 0xE2, 0xE3, 0xE4, 0xE5, 0xE6, 0xE7, 0xE8, 0xE9, 0xEA, 0xF2, - 0xF3, 0xF4, 0xF5, 0xF6, 0xF7, 0xF8, 0xF9, 0xFA - }, false); - - /** - * The lengths. - */ - private short lengths[]; - - /** - * The values. - */ - private short values[]; - - /** - * Instantiates a new jPEG huffman table. - * - * @param lengths - * the lengths - * @param values - * the values - * @param copy - * the copy - */ - JPEGHuffmanTable(short[] lengths, short[] values, boolean copy) { - // Construction of standard tables without checks - // The third param is dummy - // Could be also used for copying of the existing tables - this.lengths = lengths; - this.values = values; - } - - /** - * Instantiates a new JPEGHuffmanTable. - * - * @param lengths - * the array of shorts lengths. - * @param values - * the array of shorts containing the values in order of - * increasing code length. - */ - public JPEGHuffmanTable(short[] lengths, short[] values) { - if (lengths == null) { - throw new IllegalArgumentException("lengths array is null!"); - } - if (values == null) { - throw new IllegalArgumentException("values array is null!"); - } - if (lengths.length > 16) { // According to the spec - throw new IllegalArgumentException("lengths array is too long!"); - } - if (values.length > 256) { // According to the spec - throw new IllegalArgumentException("values array is too long"); - } - for (short length : lengths) { - if (length < 0) { - throw new IllegalArgumentException("Values in lengths array must be non-negative."); - } - } - for (short value : values) { - if (value < 0) { - throw new IllegalArgumentException("Values in values array must be non-negative."); - } - } - - checkHuffmanTable(lengths, values); - - this.lengths = new short[lengths.length]; - this.values = new short[values.length]; - System.arraycopy(lengths, 0, this.lengths, 0, lengths.length); - System.arraycopy(values, 0, this.values, 0, values.length); - } - - /** - * Gets an array of lengths in the Huffman table. - * - * @return the array of short values representing the length values in the - * Huffman table. - */ - public short[] getLengths() { - short newLengths[] = new short[lengths.length]; - System.arraycopy(lengths, 0, newLengths, 0, lengths.length); - return newLengths; - } - - /** - * Gets an array of values represented by increasing length of their codes. - * - * @return the array of values. - */ - public short[] getValues() { - short newValues[] = new short[values.length]; - System.arraycopy(values, 0, newValues, 0, values.length); - return newValues; - } - - /** - * Check huffman table. - * - * @param lengths - * the lengths. - * @param values - * the values. - */ - private static void checkHuffmanTable(short[] lengths, short[] values) { - int numLeaves = 0; - int possibleLeaves = 2; - for (short length : lengths) { - numLeaves += length; - possibleLeaves -= length; - if (possibleLeaves < 0) { - throw new IllegalArgumentException( - "Invalid Huffman table provided, lengths are incorrect."); - } - possibleLeaves <<= 1; - } - - if (values.length != numLeaves) { - throw new IllegalArgumentException( - "Invalid Huffman table provided, sum of lengths != values."); - } - } - - /** - * Returns the string representation of this JPEGHuffmanTable object. - * - * @return the string representation of this JPEGHuffmanTable object. - */ - @Override - public String toString() { - StringBuffer sb = new StringBuffer(); - - sb.append("JPEGHuffmanTable:\nlengths:"); - for (short length : lengths) { - sb.append(' ').append(length); - } - - sb.append("\nvalues:"); - for (short value : values) { - sb.append(' ').append(value); - } - - return sb.toString(); - } -} |