Mercurial > hg > Members > riono > TreeVNC_ja_comment
annotate src/main/java/com/glavsoft/rfb/encoding/decoder/ZlibDecoder.java @ 381:47c018aed50e
Change condition to ZRLEESender.decode method
author | innparusu |
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date | Thu, 03 Sep 2015 19:44:39 +0900 |
parents | 1d4d5055a288 |
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version2.7.2 original version.
Taninari YU <you@cr.ie.u-ryukyu.ac.jp>
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1 // Copyright (C) 2010, 2011, 2012, 2013 GlavSoft LLC. |
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2 // All rights reserved. |
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3 // |
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4 //------------------------------------------------------------------------- |
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5 // This file is part of the TightVNC software. Please visit our Web site: |
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6 // |
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7 // http://www.tightvnc.com/ |
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8 // |
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9 // This program is free software; you can redistribute it and/or modify |
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10 // it under the terms of the GNU General Public License as published by |
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11 // the Free Software Foundation; either version 2 of the License, or |
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12 // (at your option) any later version. |
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13 // |
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14 // This program is distributed in the hope that it will be useful, |
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15 // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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17 // GNU General Public License for more details. |
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18 // |
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19 // You should have received a copy of the GNU General Public License along |
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20 // with this program; if not, write to the Free Software Foundation, Inc., |
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21 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
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22 //------------------------------------------------------------------------- |
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23 // |
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24 |
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25 package com.glavsoft.rfb.encoding.decoder; |
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26 |
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27 import com.glavsoft.drawing.Renderer; |
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28 import com.glavsoft.exceptions.TransportException; |
3 | 29 import com.glavsoft.rfb.encoding.EncodingType; |
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30 import com.glavsoft.transport.Reader; |
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31 |
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32 import java.io.ByteArrayInputStream; |
326 | 33 import java.util.logging.Logger; |
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34 import java.util.zip.DataFormatException; |
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35 import java.util.zip.Inflater; |
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36 |
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37 public class ZlibDecoder extends Decoder { |
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38 private Inflater decoder; |
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39 |
326 | 40 @Override |
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41 public void decode(Reader reader, Renderer renderer, |
275 | 42 FramebufferUpdateRectangle rect) throws TransportException { |
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43 int zippedLength = (int) reader.readUInt32(); |
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44 if (0 == zippedLength) return; |
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45 int length = rect.width * rect.height * renderer.getBytesPerPixel(); |
3 | 46 byte[] bytes = unzip(reader, zippedLength, length, rect.getEncodingType()); |
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47 Reader unzippedReader = |
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48 new Reader( |
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49 new ByteArrayInputStream(bytes, zippedLength, length)); |
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50 RawDecoder.getInstance().decode(unzippedReader, renderer, rect); |
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51 } |
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52 |
3 | 53 protected byte[] unzip(Reader reader, int zippedLength, int length,EncodingType encodingType) |
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54 throws TransportException { |
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55 byte [] bytes = ByteBuffer.getInstance().getBuffer(zippedLength + length); |
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56 reader.readBytes(bytes, 0, zippedLength); |
3 | 57 if (null == decoder || encodingType == EncodingType.ZRLEE) { |
381 | 58 decoder = new Inflater(); |
3 | 59 } |
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60 decoder.setInput(bytes, 0, zippedLength); |
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61 try { |
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62 decoder.inflate(bytes, zippedLength, length); |
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63 } catch (DataFormatException e) { |
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64 throw new TransportException("cannot inflate Zlib data", e); |
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65 } |
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66 return bytes; |
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67 } |
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68 |
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69 @Override |
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70 public void reset() { |
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71 decoder = null; |
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72 } |
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73 |
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74 } |