01: /**
02: * Copyright (c) 2005, www.pdfbox.org
03: * All rights reserved.
04: *
05: * Redistribution and use in source and binary forms, with or without
06: * modification, are permitted provided that the following conditions are met:
07: *
08: * 1. Redistributions of source code must retain the above copyright notice,
09: * this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright notice,
11: * this list of conditions and the following disclaimer in the documentation
12: * and/or other materials provided with the distribution.
13: * 3. Neither the name of pdfbox; nor the names of its
14: * contributors may be used to endorse or promote products derived from this
15: * software without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
18: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20: * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
21: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
24: * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
26: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27: *
28: * http://www.pdfbox.org
29: *
30: */package org.pdfbox.pdmodel.graphics.predictor;
31:
32: /**
33: * The none algorithm.
34: *
35: * <code>None(i,j) = Raw(i,j)</code>
36: *
37: * <code>Raw(i,j) = None(i,j)</code>
38: *
39: * @author xylifyx@yahoo.co.uk
40: * @version $Revision: 1.3 $
41: */
42: public class None extends PredictorAlgorithm {
43: /**
44: * encode a byte array full of image data using the filter that this object
45: * implements.
46: *
47: * @param src
48: * buffer
49: * @param dest
50: * buffer
51: */
52: public void encode(byte[] src, byte[] dest) {
53: checkBufsiz(dest, src);
54: System.arraycopy(src, 0, dest, 0, src.length);
55: }
56:
57: /**
58: * decode a byte array full of image data using the filter that this object
59: * implements.
60: *
61: * @param src
62: * buffer
63: * @param dest
64: * buffer
65: */
66: public void decode(byte[] src, byte[] dest) {
67: System.arraycopy(src, 0, dest, 0, src.length);
68: }
69:
70: /**
71: * {@inheritDoc}
72: */
73: public void encodeLine(byte[] src, byte[] dest, int srcDy,
74: int srcOffset, int destDy, int destOffset) {
75: int bpl = getWidth() * getBpp();
76: for (int x = 0; x < bpl; x++) {
77: dest[destOffset + x] = src[srcOffset + x];
78: }
79: }
80:
81: /**
82: * {@inheritDoc}
83: */
84: public void decodeLine(byte[] src, byte[] dest, int srcDy,
85: int srcOffset, int destDy, int destOffset) {
86: int bpl = getWidth() * getBpp();
87: for (int x = 0; x < bpl; x++) {
88: dest[destOffset + x] = src[srcOffset + x];
89: }
90: }
91:
92: }
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