Mercurial > hg > orthanc-webviewer

comparison Plugin/DecodedImageAdapter.cpp @ 0:02f7a0400a91

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initial commit
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 25 Feb 2015 13:45:35 +0100
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children 111689a2c177
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-1:000000000000 0:02f7a0400a91
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 *
6 * This program is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU Affero General Public License
8 * as published by the Free Software Foundation, either version 3 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Affero General Public License for more details.
15 *
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 **/
19
20
21 #include "DecodedImageAdapter.h"
22
23 #include "ViewerToolbox.h"
24 #include "ParsedDicomImage.h"
25
26 #include <boost/lexical_cast.hpp>
27 #include <boost/algorithm/string/predicate.hpp>
28 #include <json/writer.h>
29
30 namespace OrthancPlugins
31 {
32 bool DecodedImageAdapter::ParseUri(CompressionType& type,
33 uint8_t& compressionLevel,
34 std::string& instanceId,
35 const std::string& uri)
36 {
37 size_t separator = uri.find('-');
38 if (separator == std::string::npos &&
39 separator >= 1)
40 {
41 return false;
42 }
43
44 std::string compression = uri.substr(0, separator);
45 instanceId = uri.substr(separator + 1);
46
47 if (compression == "deflate")
48 {
49 type = CompressionType_Deflate;
50 }
51 else if (boost::starts_with(compression, "jpeg"))
52 {
53 type = CompressionType_Jpeg;
54 int level = boost::lexical_cast<int>(compression.substr(4));
55 if (level <= 0 || level > 100)
56 {
57 return false;
58 }
59
60 compressionLevel = static_cast<uint8_t>(level);
61 }
62 else
63 {
64 return false;
65 }
66
67 return true;
68 }
69
70
71
72 bool DecodedImageAdapter::Create(std::string& content,
73 const std::string& uri)
74 {
75 std::string message = "Decoding DICOM instance: " + uri;
76 OrthancPluginLogInfo(context_, message.c_str());
77
78 CompressionType type;
79 uint8_t level;
80 std::string instanceId;
81
82 if (!ParseUri(type, level, instanceId, uri))
83 {
84 return false;
85 }
86
87 std::string file = "/instances/" + instanceId + "/file";
88
89 std::string dicom;
90 if (!GetStringFromOrthanc(dicom, context_, file))
91 {
92 return false;
93 }
94
95 ParsedDicomImage image(dicom);
96
97 Json::Value json;
98
99 if (type == CompressionType_Deflate)
100 {
101 if (!image.EncodeUsingDeflate(json, 9))
102 {
103 return false;
104 }
105 }
106 else if (type == CompressionType_Jpeg)
107 {
108 if (!image.EncodeUsingJpeg(json, level))
109 {
110 return false;
111 }
112 }
113 else
114 {
115 return false;
116 }
117
118 Json::FastWriter writer;
119 content = writer.write(json);
120 return true;
121 }
122 }