Mercurial > hg > orthanc-webviewer
annotate Plugin/ViewerPrefetchPolicy.cpp @ 292:aadbffcee805
remove calls to deprecated classes of JsonCpp
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 22 Dec 2020 09:03:24 +0100 |
parents | aee499712ac4 |
children | e376158e2dbb |
rev | line source |
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0 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
122 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
0 | 4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
0 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU Affero General Public License | |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
11 * | |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 **/ | |
20 | |
21 | |
22 #include "ViewerPrefetchPolicy.h" | |
23 | |
24 #include "ViewerToolbox.h" | |
25 #include "Cache/CacheScheduler.h" | |
26 | |
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27 #include <Toolbox.h> |
0 | 28 |
29 | |
30 static const Json::Value::ArrayIndex PREFETCH_FORWARD = 10; | |
31 static const Json::Value::ArrayIndex PREFETCH_BACKWARD = 3; | |
32 | |
33 | |
34 namespace OrthancPlugins | |
35 { | |
36 void ViewerPrefetchPolicy::ApplySeries(std::list<CacheIndex>& toPrefetch, | |
37 CacheScheduler& cache, | |
38 const std::string& series, | |
39 const std::string& content) | |
40 { | |
41 Json::Value json; | |
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42 if (!Orthanc::Toolbox::ReadJson(json, content) || |
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43 !json.isMember("Slices")) |
0 | 44 { |
45 return; | |
46 } | |
47 | |
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48 const Json::Value& instances = json["Slices"]; |
0 | 49 if (instances.type() != Json::arrayValue) |
50 { | |
51 return; | |
52 } | |
53 | |
54 for (Json::Value::ArrayIndex i = 0; | |
55 i < instances.size() && i < PREFETCH_FORWARD; | |
56 i++) | |
57 { | |
58 std::string item = "jpeg95-" + instances[i].asString(); | |
59 toPrefetch.push_back(CacheIndex(CacheBundle_DecodedImage, item)); | |
60 } | |
61 } | |
62 | |
63 | |
64 void ViewerPrefetchPolicy::ApplyInstance(std::list<CacheIndex>& toPrefetch, | |
65 CacheScheduler& cache, | |
66 const std::string& path) | |
67 { | |
68 size_t separator = path.find('-'); | |
69 if (separator == std::string::npos) | |
70 { | |
71 return; | |
72 } | |
73 | |
74 std::string compression = path.substr(0, separator + 1); | |
101 | 75 std::string instanceAndFrame = path.substr(separator + 1); |
0 | 76 |
101 | 77 std::string instanceId = instanceAndFrame.substr(0, instanceAndFrame.find('_')); |
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78 |
0 | 79 Json::Value instance; |
80 if (!GetJsonFromOrthanc(instance, context_, "/instances/" + instanceId) || | |
81 !instance.isMember("ParentSeries")) | |
82 { | |
83 return; | |
84 } | |
85 | |
86 std::string tmp; | |
87 if (!cache.Access(tmp, CacheBundle_SeriesInformation, instance["ParentSeries"].asString())) | |
88 { | |
89 return; | |
90 } | |
91 | |
92 Json::Value series; | |
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93 if (!Orthanc::Toolbox::ReadJson(series, tmp) || |
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94 !series.isMember("Slices")) |
0 | 95 { |
96 return; | |
97 } | |
98 | |
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99 const Json::Value& instances = series["Slices"]; |
101 | 100 |
0 | 101 if (instances.type() != Json::arrayValue) |
102 { | |
103 return; | |
104 } | |
105 | |
106 Json::Value::ArrayIndex position = 0; | |
107 while (position < instances.size()) | |
108 { | |
101 | 109 if (instances[position] == instanceAndFrame) |
0 | 110 { |
111 break; | |
112 } | |
113 | |
114 position++; | |
115 } | |
116 | |
117 if (position == instances.size()) | |
118 { | |
119 return; | |
120 } | |
121 | |
122 for (Json::Value::ArrayIndex i = position; | |
123 i < instances.size() && i < position + PREFETCH_FORWARD; | |
124 i++) | |
125 { | |
126 std::string item = compression + instances[i].asString(); | |
127 toPrefetch.push_back(CacheIndex(CacheBundle_DecodedImage, item)); | |
128 } | |
129 | |
130 for (Json::Value::ArrayIndex i = position; | |
131 i >= 0 && i > position - PREFETCH_BACKWARD; ) | |
132 { | |
133 i--; | |
134 std::string item = compression + instances[i].asString(); | |
135 toPrefetch.push_back(CacheIndex(CacheBundle_DecodedImage, item)); | |
136 } | |
137 } | |
138 | |
139 | |
140 void ViewerPrefetchPolicy::Apply(std::list<CacheIndex>& toPrefetch, | |
141 CacheScheduler& cache, | |
142 const CacheIndex& accessed, | |
143 const std::string& content) | |
144 { | |
145 switch (accessed.GetBundle()) | |
146 { | |
147 case CacheBundle_SeriesInformation: | |
148 ApplySeries(toPrefetch, cache, accessed.GetItem(), content); | |
149 return; | |
150 | |
151 case CacheBundle_DecodedImage: | |
152 ApplyInstance(toPrefetch, cache, accessed.GetItem()); | |
153 return; | |
154 | |
155 default: | |
156 return; | |
157 } | |
158 } | |
159 } | |
160 |