Mercurial > hg > orthanc-stone
annotate Resources/Orthanc/Core/Compression/DeflateBaseCompressor.cpp @ 208:db70f6c5fa4f
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 11 Apr 2018 16:27:09 +0200 |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
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6 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU General Public License as |
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9 * published by the Free Software Foundation, either version 3 of the |
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10 * License, or (at your option) any later version. |
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11 * |
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12 * In addition, as a special exception, the copyright holders of this |
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13 * program give permission to link the code of its release with the |
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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15 * that use the same license as the "OpenSSL" library), and distribute |
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16 * the linked executables. You must obey the GNU General Public License |
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17 * in all respects for all of the code used other than "OpenSSL". If you |
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18 * modify file(s) with this exception, you may extend this exception to |
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19 * your version of the file(s), but you are not obligated to do so. If |
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20 * you do not wish to do so, delete this exception statement from your |
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21 * version. If you delete this exception statement from all source files |
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22 * in the program, then also delete it here. |
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23 * |
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24 * This program is distributed in the hope that it will be useful, but |
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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27 * General Public License for more details. |
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28 * |
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29 * You should have received a copy of the GNU General Public License |
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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31 **/ |
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32 |
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33 |
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34 #include "../PrecompiledHeaders.h" |
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35 #include "DeflateBaseCompressor.h" |
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36 |
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37 #include "../OrthancException.h" |
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38 #include "../Logging.h" |
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39 |
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40 #include <string.h> |
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41 |
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42 namespace Orthanc |
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43 { |
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44 void DeflateBaseCompressor::SetCompressionLevel(uint8_t level) |
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45 { |
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46 if (level >= 10) |
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47 { |
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48 LOG(ERROR) << "Zlib compression level must be between 0 (no compression) and 9 (highest compression)"; |
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49 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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50 } |
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51 |
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52 compressionLevel_ = level; |
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53 } |
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54 |
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55 |
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56 uint64_t DeflateBaseCompressor::ReadUncompressedSizePrefix(const void* compressed, |
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57 size_t compressedSize) |
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58 { |
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59 if (compressedSize == 0) |
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60 { |
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61 return 0; |
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62 } |
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63 |
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64 if (compressedSize < sizeof(uint64_t)) |
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65 { |
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66 LOG(ERROR) << "The compressed buffer is ill-formed"; |
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67 throw OrthancException(ErrorCode_CorruptedFile); |
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68 } |
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69 |
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70 uint64_t size; |
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71 memcpy(&size, compressed, sizeof(uint64_t)); |
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72 |
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73 return size; |
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74 } |
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75 |
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76 } |