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annotate Resources/Orthanc/Core/Compression/DeflateBaseCompressor.h @ 204:9d269d7cfeb8

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author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 28 Mar 2018 11:28:27 +0200
parents 03afbee0cc7b
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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 #pragma once
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35
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36 #include "IBufferCompressor.h"
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37
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38 #if !defined(ORTHANC_ENABLE_ZLIB)
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39 # error The macro ORTHANC_ENABLE_ZLIB must be defined
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40 #endif
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41
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42 #if ORTHANC_ENABLE_ZLIB != 1
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43 # error ZLIB support must be enabled to include this file
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44 #endif
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47 #include <stdint.h>
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48
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49 namespace Orthanc
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50 {
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51 class DeflateBaseCompressor : public IBufferCompressor
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52 {
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53 private:
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54 uint8_t compressionLevel_;
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55 bool prefixWithUncompressedSize_;
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56
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57 protected:
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58 uint64_t ReadUncompressedSizePrefix(const void* compressed,
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59 size_t compressedSize);
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60
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61 public:
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62 DeflateBaseCompressor() :
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63 compressionLevel_(6),
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64 prefixWithUncompressedSize_(false)
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65 {
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66 }
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67
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68 void SetCompressionLevel(uint8_t level);
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69
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70 void SetPrefixWithUncompressedSize(bool prefix)
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71 {
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72 prefixWithUncompressedSize_ = prefix;
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73 }
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74
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75 bool HasPrefixWithUncompressedSize() const
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76 {
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77 return prefixWithUncompressedSize_;
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78 }
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79
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80 uint8_t GetCompressionLevel() const
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81 {
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82 return compressionLevel_;
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83 }
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84 };
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85 }