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comparison OrthancFramework/Sources/Compression/DeflateBaseCompressor.cpp @ 4044:d25f4c0fa160 framework

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splitting code into OrthancFramework and OrthancServer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 10 Jun 2020 20:30:34 +0200
parents Core/Compression/DeflateBaseCompressor.cpp@94f4a18a79cc
children bf7b9edf6b81
comparison
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4043:6c6239aec462 4044:d25f4c0fa160
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
11 *
12 * In addition, as a special exception, the copyright holders of this
13 * program give permission to link the code of its release with the
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
15 * that use the same license as the "OpenSSL" library), and distribute
16 * the linked executables. You must obey the GNU General Public License
17 * in all respects for all of the code used other than "OpenSSL". If you
18 * modify file(s) with this exception, you may extend this exception to
19 * your version of the file(s), but you are not obligated to do so. If
20 * you do not wish to do so, delete this exception statement from your
21 * version. If you delete this exception statement from all source files
22 * in the program, then also delete it here.
23 *
24 * This program is distributed in the hope that it will be useful, but
25 * WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 **/
32
33
34 #include "../PrecompiledHeaders.h"
35 #include "DeflateBaseCompressor.h"
36
37 #include "../OrthancException.h"
38 #include "../Logging.h"
39
40 #include <string.h>
41
42 namespace Orthanc
43 {
44 void DeflateBaseCompressor::SetCompressionLevel(uint8_t level)
45 {
46 if (level >= 10)
47 {
48 throw OrthancException(ErrorCode_ParameterOutOfRange,
49 "Zlib compression level must be between 0 (no compression) and 9 (highest compression)");
50 }
51
52 compressionLevel_ = level;
53 }
54
55
56 uint64_t DeflateBaseCompressor::ReadUncompressedSizePrefix(const void* compressed,
57 size_t compressedSize)
58 {
59 if (compressedSize == 0)
60 {
61 return 0;
62 }
63
64 if (compressedSize < sizeof(uint64_t))
65 {
66 throw OrthancException(ErrorCode_CorruptedFile, "The compressed buffer is ill-formed");
67 }
68
69 uint64_t size;
70 memcpy(&size, compressed, sizeof(uint64_t));
71
72 return size;
73 }
74
75 }