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comparison Plugins/Samples/GdcmDecoding/OrthancContext.cpp @ 983:80d4f1618b33 plugins

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Sample plugin to replace DCMTK by GDCM when decoding images
author Sebastien Jodogne <s.jodogne@gmail.com>
date Tue, 01 Jul 2014 12:01:58 +0200
parents
children 501880d76474
comparison
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982:5983e59ac670 983:80d4f1618b33
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege,
4 * Belgium
5 *
6 * Permission is hereby granted, free of charge, to any person
7 * obtaining a copy of this software and associated documentation
8 * files (the "Software"), to deal in the Software without
9 * restriction, including without limitation the rights to use, copy,
10 * modify, merge, publish, distribute, sublicense, and/or sell copies
11 * of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
21 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE.
25 **/
26
27
28 #include "OrthancContext.h"
29
30 #include <stdexcept>
31
32
33 void OrthancContext::Check()
34 {
35 if (context_ == NULL)
36 {
37 throw std::runtime_error("The Orthanc plugin context is not initialized");
38 }
39 }
40
41
42 OrthancContext& OrthancContext::GetInstance()
43 {
44 static OrthancContext instance;
45 return instance;
46 }
47
48
49 OrthancContext::~OrthancContext()
50 {
51 if (context_ != NULL)
52 {
53 throw std::runtime_error("The Orthanc plugin was not properly finalized");
54 }
55 }
56
57
58 void OrthancContext::ExtractGetArguments(Arguments& arguments,
59 const OrthancPluginHttpRequest& request)
60 {
61 Check();
62 arguments.clear();
63
64 for (uint32_t i = 0; i < request.getCount; i++)
65 {
66 arguments[request.getKeys[i]] = request.getValues[i];
67 }
68 }
69
70
71 void OrthancContext::LogError(const std::string& s)
72 {
73 Check();
74 OrthancPluginLogError(context_, s.c_str());
75 }
76
77
78 void OrthancContext::LogWarning(const std::string& s)
79 {
80 Check();
81 OrthancPluginLogWarning(context_, s.c_str());
82 }
83
84
85 void OrthancContext::LogInfo(const std::string& s)
86 {
87 Check();
88 OrthancPluginLogInfo(context_, s.c_str());
89 }
90
91
92 void OrthancContext::Register(const std::string& uri,
93 OrthancPluginRestCallback callback)
94 {
95 Check();
96 OrthancPluginRegisterRestCallback(context_, uri.c_str(), callback);
97 }
98
99
100 void OrthancContext::GetDicomForInstance(std::string& result,
101 const std::string& instanceId)
102 {
103 Check();
104 OrthancPluginMemoryBuffer buffer;
105
106 if (OrthancPluginGetDicomForInstance(context_, &buffer, instanceId.c_str()))
107 {
108 throw std::runtime_error("No DICOM instance with Orthanc ID: " + instanceId);
109 }
110
111 if (buffer.size == 0)
112 {
113 result.clear();
114 }
115 else
116 {
117 result.assign(reinterpret_cast<char*>(buffer.data), buffer.size);
118 }
119
120 OrthancPluginFreeMemoryBuffer(context_, &buffer);
121 }
122
123
124 void OrthancContext::CompressAndAnswerPngImage(OrthancPluginRestOutput* output,
125 const Orthanc::ImageAccessor& accessor)
126 {
127 Check();
128
129 OrthancPluginPixelFormat format;
130 switch (accessor.GetFormat())
131 {
132 case Orthanc::PixelFormat_Grayscale8:
133 format = OrthancPluginPixelFormat_Grayscale8;
134 break;
135
136 case Orthanc::PixelFormat_Grayscale16:
137 format = OrthancPluginPixelFormat_Grayscale16;
138 break;
139
140 case Orthanc::PixelFormat_SignedGrayscale16:
141 format = OrthancPluginPixelFormat_SignedGrayscale16;
142 break;
143
144 case Orthanc::PixelFormat_RGB24:
145 format = OrthancPluginPixelFormat_RGB24;
146 break;
147
148 case Orthanc::PixelFormat_RGBA32:
149 format = OrthancPluginPixelFormat_RGBA32;
150 break;
151
152 default:
153 throw std::runtime_error("Unsupported pixel format");
154 }
155
156 OrthancPluginCompressAndAnswerPngImage(context_, output, format, accessor.GetWidth(),
157 accessor.GetHeight(), accessor.GetPitch(), accessor.GetConstBuffer());
158 }