1 /*
2  * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.
3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
5  * This code is free software; you can redistribute it and/or modify it
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7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24  */
25 package com.sun.imageio.plugins.tiff;
26 
27 import javax.imageio.plugins.tiff.BaselineTIFFTagSet;
28 import java.io.IOException;
29 
30 /**
31  * Uncompressed data with LSB-to-MSB fill order.
32  */
33 public class TIFFLSBCompressor extends TIFFCompressor {
34 
TIFFLSBCompressor()35     public TIFFLSBCompressor() {
36         super("", BaselineTIFFTagSet.COMPRESSION_NONE, true);
37     }
38 
encode(byte[] b, int off, int width, int height, int[] bitsPerSample, int scanlineStride)39     public int encode(byte[] b, int off,
40                       int width, int height,
41                       int[] bitsPerSample,
42                       int scanlineStride) throws IOException {
43         int bitsPerPixel = 0;
44         for (int i = 0; i < bitsPerSample.length; i++) {
45             bitsPerPixel += bitsPerSample[i];
46         }
47         int bytesPerRow = (bitsPerPixel*width + 7)/8;
48         byte[] compData = new byte[bytesPerRow];
49         byte[] flipTable = TIFFFaxDecompressor.flipTable;
50         for (int row = 0; row < height; row++) {
51             System.arraycopy(b, off, compData, 0, bytesPerRow);
52             for(int j = 0; j < bytesPerRow; j++) {
53                 compData[j] = flipTable[compData[j]&0xff];
54             }
55             stream.write(compData, 0, bytesPerRow);
56             off += scanlineStride;
57         }
58         return height*bytesPerRow;
59     }
60 }
61