Mercurial > hg > orthanc-python
annotate Sources/Plugin.cpp @ 195:d7a6e75558ee java-code-model
documented orthanc.RegisterOnChangeCallback()
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 02 Jul 2024 18:56:28 +0200 |
parents | b0f096d2339e |
children | 28531e615104 |
rev | line source |
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0 | 1 /** |
2 * Python plugin for Orthanc | |
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3 * Copyright (C) 2020-2023 Osimis S.A., Belgium |
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4 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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5 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, 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 // http://edcjones.tripod.com/refcount.html | |
23 // https://docs.python.org/3/extending/extending.html | |
24 | |
25 // https://www.codevate.com/blog/7-concurrency-with-embedded-python-in-a-multi-threaded-c-application | |
26 // https://fr.slideshare.net/YiLungTsai/embed-python | |
27 | |
28 | |
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29 #include "DicomScpCallbacks.h" |
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30 #include "IncomingHttpRequestFilter.h" |
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31 #include "OnChangeCallback.h" |
0 | 32 #include "OnStoredInstanceCallback.h" |
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33 #include "IncomingInstanceFilter.h" |
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34 #include "ReceivedInstanceCallback.h" |
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35 #include "StorageArea.h" |
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36 #include "StorageCommitmentScpCallback.h" |
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37 |
0 | 38 #include "RestCallbacks.h" |
39 #include "PythonModule.h" | |
40 | |
41 #include "Autogenerated/sdk.h" | |
42 | |
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43 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h" |
0 | 44 |
45 #include <boost/algorithm/string/predicate.hpp> | |
46 #include <boost/filesystem.hpp> | |
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47 #include <boost/thread.hpp> |
0 | 48 |
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49 // The "dl_iterate_phdr()" function (to walk through shared libraries) |
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50 // is not available on Microsoft Windows and Apple OS X |
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51 #if defined(_WIN32) |
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52 # define HAS_DL_ITERATE 0 |
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53 #elif defined(__APPLE__) && defined(__MACH__) |
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54 # define HAS_DL_ITERATE 0 |
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55 #else |
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56 # define HAS_DL_ITERATE 1 |
0 | 57 #endif |
58 | |
59 | |
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60 #include "PythonString.h" |
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61 |
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62 PyObject* LookupDictionary(PyObject* module, PyObject* args) |
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63 { |
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64 const char* name = NULL; |
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65 |
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66 if (!PyArg_ParseTuple(args, "s", &name)) |
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67 { |
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68 PyErr_SetString(PyExc_TypeError, "Please provide a string containing the name of the DICOM tag of interest"); |
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69 return NULL; |
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70 } |
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71 else |
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72 { |
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73 OrthancPluginDictionaryEntry entry; |
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74 |
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75 OrthancPluginErrorCode code = OrthancPluginLookupDictionary(OrthancPlugins::GetGlobalContext(), &entry, name); |
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76 if (code == OrthancPluginErrorCode_Success) |
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77 { |
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78 /** |
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79 * "PyGILState_Ensure()" can be invoked several times from the |
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80 * same thread, so no problem in creating a PythonLock even if |
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81 * the GIL is already locked. |
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82 **/ |
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83 PythonLock lock; |
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84 |
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85 PythonObject kw(lock, PyDict_New()); |
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86 |
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87 { |
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88 PythonObject tmp(lock, PyLong_FromUnsignedLong(entry.group)); |
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89 PyDict_SetItemString(kw.GetPyObject(), "Group", tmp.GetPyObject()); |
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90 } |
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91 |
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92 { |
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93 PythonObject tmp(lock, PyLong_FromUnsignedLong(entry.element)); |
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94 PyDict_SetItemString(kw.GetPyObject(), "Element", tmp.GetPyObject()); |
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95 } |
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96 |
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97 { |
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98 PythonObject tmp(lock, PyLong_FromUnsignedLong(entry.vr)); |
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99 PyDict_SetItemString(kw.GetPyObject(), "ValueRepresentation", tmp.GetPyObject()); |
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100 } |
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101 |
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102 { |
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103 PythonObject tmp(lock, PyLong_FromUnsignedLong(entry.minMultiplicity)); |
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104 PyDict_SetItemString(kw.GetPyObject(), "MinMultiplicity", tmp.GetPyObject()); |
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105 } |
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106 |
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107 { |
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108 PythonObject tmp(lock, PyLong_FromUnsignedLong(entry.maxMultiplicity)); |
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109 PyDict_SetItemString(kw.GetPyObject(), "MaxMultiplicity", tmp.GetPyObject()); |
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110 } |
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111 |
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112 return kw.Release(); |
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113 } |
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114 else |
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115 { |
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116 std::string message = "Unknown DICOM tag: " + std::string(name); |
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117 PyErr_SetString(PyExc_TypeError, message.c_str()); |
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118 return NULL; |
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119 } |
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120 } |
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121 } |
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122 |
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124 PyObject* GetInstanceData(sdk_OrthancPluginDicomInstance_Object* self, PyObject *args) |
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125 { |
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126 // The GIL is locked at this point (no need to create "PythonLock") |
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127 |
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128 if (self->object_ == NULL) |
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129 { |
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130 PyErr_SetString(PyExc_ValueError, "Invalid object"); |
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131 return NULL; |
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132 } |
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133 else |
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134 { |
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135 OrthancPluginDicomInstance* instance = reinterpret_cast<sdk_OrthancPluginDicomInstance_Object*>(self)->object_; |
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136 |
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137 const void* data = OrthancPluginGetInstanceData(OrthancPlugins::GetGlobalContext(), instance); |
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138 size_t size = OrthancPluginGetInstanceSize(OrthancPlugins::GetGlobalContext(), instance); |
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139 |
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140 if (data == NULL && |
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141 size != 0) |
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142 { |
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143 PyErr_SetString(PyExc_ValueError, "Accessing an invalid orthanc.DicomInstance object"); |
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144 return NULL; |
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145 } |
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146 else |
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147 { |
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148 return PyBytes_FromStringAndSize(reinterpret_cast<const char*>(data), size); |
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149 } |
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150 } |
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151 } |
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152 |
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153 |
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154 /** |
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155 * Contrarily to "OrthancPluginGetImageBuffer()" that provides a |
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156 * read-write pointer, the method "orthanc.Image.GetImageBuffer()" |
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157 * returns a copy of the image buffer. Use "CreateImageFromBuffer()" |
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158 * to create an image from a Python buffer. |
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159 **/ |
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160 PyObject* GetImageBuffer(sdk_OrthancPluginImage_Object* self, PyObject *args) |
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161 { |
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162 // The GIL is locked at this point (no need to create "PythonLock") |
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163 |
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164 if (self->object_ == NULL) |
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165 { |
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166 PyErr_SetString(PyExc_ValueError, "Invalid object"); |
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167 return NULL; |
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168 } |
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169 else |
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170 { |
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171 OrthancPluginImage* image = reinterpret_cast<sdk_OrthancPluginImage_Object*>(self)->object_; |
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172 |
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173 const void* buffer = OrthancPluginGetImageBuffer(OrthancPlugins::GetGlobalContext(), image); |
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174 size_t size = (OrthancPluginGetImagePitch(OrthancPlugins::GetGlobalContext(), image) * |
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175 OrthancPluginGetImageHeight(OrthancPlugins::GetGlobalContext(), image)); |
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176 |
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177 if (buffer == NULL && |
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178 size != 0) |
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179 { |
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180 PyErr_SetString(PyExc_ValueError, "Accessing an invalid orthanc.Image object"); |
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181 return NULL; |
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182 } |
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183 else |
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184 { |
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185 return PyBytes_FromStringAndSize(reinterpret_cast<const char*>(buffer), size); |
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186 } |
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187 } |
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188 } |
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189 |
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190 |
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191 /** |
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192 * This function is the Python alternative for function |
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193 * "OrthancPluginCreateImageAccessor()". Indeed, it is not possible to |
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194 * share a memory buffer between Orthanc and Python, so we have to |
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195 * create a copy of the image. |
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196 **/ |
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197 PyObject* CreateImageFromBuffer(PyObject* module, PyObject* args) |
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198 { |
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199 // The GIL is locked at this point (no need to create "PythonLock") |
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200 |
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201 unsigned long format, width, height, sourcePitch; |
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202 Py_buffer buffer; |
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203 |
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204 if (!PyArg_ParseTuple(args, "kkkks*", &format, &width, &height, &sourcePitch, &buffer)) |
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205 { |
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206 PyErr_SetString(PyExc_TypeError, "5 arguments are needed: image.PixelFormat, width, height, pitch and memory buffer"); |
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207 return NULL; |
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208 } |
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209 else if (static_cast<Py_ssize_t>(sourcePitch * height) != buffer.len) |
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210 { |
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211 PyBuffer_Release(&buffer); |
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212 |
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213 PyErr_SetString(PyExc_TypeError, "The size of the memory buffer must match the product of height by pitch"); |
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214 return NULL; |
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215 } |
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216 else |
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217 { |
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218 OrthancPluginImage* image = OrthancPluginCreateImage( |
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219 OrthancPlugins::GetGlobalContext(), static_cast<OrthancPluginPixelFormat>(format), width, height); |
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220 |
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221 if (image == NULL) |
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222 { |
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223 PyBuffer_Release(&buffer); |
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224 |
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225 PyErr_SetString(PyExc_ValueError, "Cannot create the image"); |
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226 return NULL; |
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227 } |
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228 else |
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229 { |
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230 // Copy the image line by line |
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231 unsigned long targetPitch = OrthancPluginGetImagePitch(OrthancPlugins::GetGlobalContext(), image); |
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232 |
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233 const uint8_t* sourcePixels = reinterpret_cast<const uint8_t*>(buffer.buf); |
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234 uint8_t* targetPixels = reinterpret_cast<uint8_t*>(OrthancPluginGetImageBuffer(OrthancPlugins::GetGlobalContext(), image)); |
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235 |
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236 unsigned long rowSize = std::min(sourcePitch, targetPitch); |
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237 |
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238 for (unsigned int y = 0; y < height; y++) |
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239 { |
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240 memcpy(targetPixels, sourcePixels, rowSize); |
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241 targetPixels += targetPitch; |
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242 sourcePixels += sourcePitch; |
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243 } |
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244 |
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245 PyBuffer_Release(&buffer); |
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246 |
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247 { |
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248 PyObject *argList = Py_BuildValue("Lb", image, false /* not borrowed */); |
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249 PyObject *python = PyObject_CallObject((PyObject *) GetOrthancPluginImageType(), argList); |
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250 Py_DECREF(argList); |
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251 return python; |
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252 } |
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253 } |
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254 } |
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255 } |
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256 |
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257 |
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258 |
0 | 259 static bool pythonEnabled_ = false; |
260 static std::string userScriptName_; | |
261 static std::vector<PyMethodDef> globalFunctions_; | |
124
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262 static boost::thread displayMemoryUsageThread_; |
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263 static bool displayMemoryUsageStopping_ = false; |
0 | 264 |
265 | |
266 static void InstallClasses(PyObject* module) | |
267 { | |
268 RegisterOrthancSdk(module); | |
269 } | |
270 | |
271 | |
272 static void SetupGlobalFunctions() | |
273 { | |
274 if (!globalFunctions_.empty()) | |
275 { | |
144
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276 return; |
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277 // ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); |
0 | 278 } |
279 | |
280 /** | |
281 * Add all the manual global functions | |
282 **/ | |
283 | |
284 std::list<PyMethodDef> functions; | |
285 | |
286 { | |
287 PyMethodDef f = { "RegisterOnStoredInstanceCallback", RegisterOnStoredInstanceCallback, | |
288 METH_VARARGS, "" }; | |
289 functions.push_back(f); | |
290 } | |
50
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291 |
63
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292 |
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293 /** |
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294 * New in release 3.0 |
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295 **/ |
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296 |
50
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297 { |
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298 PyMethodDef f = { "RegisterIncomingHttpRequestFilter", RegisterIncomingHttpRequestFilter, METH_VARARGS, "" }; |
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299 functions.push_back(f); |
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300 } |
63
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301 |
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302 |
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303 /** |
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304 * New in release 3.2 |
63
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305 **/ |
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306 |
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307 { |
66
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308 PyMethodDef f = { "LookupDictionary", LookupDictionary, METH_VARARGS, "" }; |
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309 functions.push_back(f); |
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310 } |
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311 |
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312 { |
65
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313 PyMethodDef f = { "CreateImageFromBuffer", CreateImageFromBuffer, METH_VARARGS, "" }; |
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314 functions.push_back(f); |
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315 } |
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316 |
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317 { |
63
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318 PyMethodDef f = { "RegisterFindCallback", RegisterFindCallback, METH_VARARGS, "" }; |
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319 functions.push_back(f); |
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320 } |
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321 |
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322 { |
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323 PyMethodDef f = { "RegisterMoveCallback", RegisterMoveCallback, METH_VARARGS, "" }; |
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324 functions.push_back(f); |
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325 } |
151
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326 |
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327 { |
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328 PyMethodDef f = { "RegisterMoveCallback2", RegisterMoveCallback2, METH_VARARGS, "" }; |
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329 functions.push_back(f); |
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330 } |
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331 |
64
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332 { |
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333 PyMethodDef f = { "RegisterWorklistCallback", RegisterWorklistCallback, METH_VARARGS, "" }; |
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334 functions.push_back(f); |
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335 } |
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336 |
0 | 337 |
338 /** | |
79
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339 * New in release 3.3 |
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340 **/ |
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341 |
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342 { |
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343 PyMethodDef f = { "RegisterStorageArea", RegisterStorageArea, METH_VARARGS, "" }; |
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344 functions.push_back(f); |
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345 } |
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346 |
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347 |
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348 /** |
96
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349 * New in release 3.5 |
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350 **/ |
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351 |
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352 { |
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353 PyMethodDef f = { "RegisterIncomingCStoreInstanceFilter", RegisterIncomingCStoreInstanceFilter, METH_VARARGS, "" }; |
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354 functions.push_back(f); |
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355 } |
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356 |
99
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357 { |
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358 PyMethodDef f = { "RegisterReceivedInstanceCallback", RegisterReceivedInstanceCallback, METH_VARARGS, "" }; |
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359 functions.push_back(f); |
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360 } |
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361 |
96
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362 /** |
119
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363 * New in release 4.1 |
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364 **/ |
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365 |
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366 { |
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367 PyMethodDef f = { "RegisterStorageCommitmentScpCallback", RegisterStorageCommitmentScpCallback, METH_VARARGS, "" }; |
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368 functions.push_back(f); |
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369 } |
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370 |
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371 /** |
0 | 372 * Append all the global functions that were automatically generated |
373 **/ | |
374 | |
375 const PyMethodDef* sdk = GetOrthancSdkFunctions(); | |
376 | |
377 for (size_t i = 0; sdk[i].ml_name != NULL; i++) | |
378 { | |
379 functions.push_back(sdk[i]); | |
380 } | |
381 | |
382 /** | |
383 * Flatten the list of functions into the vector | |
384 **/ | |
385 | |
386 globalFunctions_.resize(functions.size()); | |
387 std::copy(functions.begin(), functions.end(), globalFunctions_.begin()); | |
388 | |
389 PyMethodDef sentinel = { NULL }; | |
390 globalFunctions_.push_back(sentinel); | |
391 } | |
392 | |
393 | |
394 static PyMethodDef* GetGlobalFunctions() | |
395 { | |
396 if (globalFunctions_.empty()) | |
397 { | |
398 // "SetupGlobalFunctions()" should have been called | |
399 ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); | |
400 } | |
401 else | |
402 { | |
403 return &globalFunctions_[0]; | |
404 } | |
405 } | |
406 | |
407 | |
408 | |
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409 #if HAS_DL_ITERATE == 1 |
0 | 410 |
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411 #include <dlfcn.h> |
0 | 412 #include <link.h> // For dl_phdr_info |
413 | |
414 static int ForceImportCallback(struct dl_phdr_info *info, size_t size, void *data) | |
415 { | |
416 /** | |
417 * The following line solves the error: "ImportError: | |
418 * /usr/lib/python2.7/dist-packages/PIL/_imaging.x86_64-linux-gnu.so: | |
419 * undefined symbol: PyExc_SystemError" | |
420 * https://stackoverflow.com/a/48517485/881731 | |
421 * | |
422 * dlopen("/usr/lib/x86_64-linux-gnu/libpython2.7.so", RTLD_NOW | RTLD_LAZY | RTLD_GLOBAL); | |
423 * | |
424 * Another fix consists in using LD_PRELOAD as follows: | |
425 * LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libpython2.7.so ~/Subversion/orthanc/i/Orthanc tutu.json | |
426 **/ | |
427 | |
428 std::string module(info->dlpi_name); | |
429 | |
430 if (module.find("python") != std::string::npos) | |
431 { | |
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432 ORTHANC_PLUGINS_LOG_WARNING("Force global loading of Python shared library: " + module); |
0 | 433 dlopen(module.c_str(), RTLD_NOW | RTLD_LAZY | RTLD_GLOBAL); |
434 } | |
435 | |
436 return 0; | |
437 } | |
438 | |
439 #endif | |
440 | |
441 | |
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442 static void DisplayMemoryUsageThread() |
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443 { |
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444 { |
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445 PythonLock lock; |
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446 lock.ExecuteCommand("import tracemalloc"); |
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447 lock.ExecuteCommand("tracemalloc.start()"); |
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448 } |
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449 |
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450 while (!displayMemoryUsageStopping_) |
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451 { |
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452 { |
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453 PythonLock lock; |
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454 lock.ExecuteCommand("print('Python memory usage: %0.03fMB' % " |
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455 "(tracemalloc.get_traced_memory() [0] / (1024.0 * 1024.0)))"); |
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456 } |
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457 |
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458 boost::this_thread::sleep(boost::posix_time::seconds(1)); |
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459 } |
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460 } |
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461 |
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462 |
0 | 463 extern "C" |
464 { | |
465 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* c) | |
466 { | |
467 OrthancPlugins::SetGlobalContext(c); | |
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468 ORTHANC_PLUGINS_LOG_WARNING("Python plugin is initializing"); |
0 | 469 |
470 | |
471 /* Check the version of the Orthanc core */ | |
472 if (OrthancPluginCheckVersion(c) == 0) | |
473 { | |
474 char info[1024]; | |
475 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin", | |
476 c->orthancVersion, | |
477 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER, | |
478 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER, | |
479 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER); | |
480 OrthancPluginLogError(c, info); | |
481 return -1; | |
482 } | |
11 | 483 |
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484 OrthancPlugins::SetDescription(PLUGIN_NAME, "Run Python scripts as Orthanc plugins"); |
11 | 485 |
0 | 486 try |
487 { | |
488 /** | |
489 * Detection of the user script | |
490 **/ | |
491 | |
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492 OrthancPlugins::OrthancConfiguration globalConfig; |
0 | 493 |
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494 OrthancPlugins::OrthancConfiguration pythonConfig; |
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495 globalConfig.GetSection(pythonConfig, "Python"); |
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496 |
0 | 497 std::string script; |
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498 if (!globalConfig.LookupStringValue(script, "PythonScript") && |
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499 !pythonConfig.LookupStringValue(script, "Path")) |
0 | 500 { |
501 pythonEnabled_ = false; | |
502 | |
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503 ORTHANC_PLUGINS_LOG_WARNING("Options \"PythonScript\" and \"Python.Path\" are not provided: " |
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504 "Python scripting is disabled"); |
0 | 505 } |
506 else | |
507 { | |
508 pythonEnabled_ = true; | |
509 | |
510 /** | |
511 * Installation of the user script | |
512 **/ | |
513 | |
514 const boost::filesystem::path path(script); | |
515 if (!boost::iequals(path.extension().string(), ".py")) | |
516 { | |
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517 ORTHANC_PLUGINS_LOG_ERROR("Python script must have the \".py\" file extension: " + |
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518 path.string()); |
0 | 519 return -1; |
520 } | |
521 | |
522 if (!boost::filesystem::is_regular_file(path)) | |
523 { | |
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524 ORTHANC_PLUGINS_LOG_ERROR("Inexistent directory for the Python script: " + |
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525 path.string()); |
0 | 526 return -1; |
527 } | |
528 | |
529 boost::filesystem::path userScriptDirectory = boost::filesystem::absolute(path).parent_path(); | |
530 | |
531 { | |
532 boost::filesystem::path module = path.filename().replace_extension(""); | |
533 userScriptName_ = module.string(); | |
534 } | |
535 | |
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536 ORTHANC_PLUGINS_LOG_WARNING("Using Python script \"" + userScriptName_ + |
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537 ".py\" from directory: " + userScriptDirectory.string()); |
0 | 538 |
539 | |
540 /** | |
541 * Initialization of Python | |
542 **/ | |
543 | |
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544 const bool isVerbose = (globalConfig.GetBooleanValue("PythonVerbose", false) || |
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545 pythonConfig.GetBooleanValue("Verbose", false)); |
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546 |
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547 #if HAS_DL_ITERATE == 1 |
0 | 548 dl_iterate_phdr(ForceImportCallback, NULL); |
549 #endif | |
550 | |
551 SetupGlobalFunctions(); | |
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552 PythonLock::GlobalInitialize("orthanc", "OrthancException", GetGlobalFunctions, InstallClasses, isVerbose); |
0 | 553 PythonLock::AddSysPath(userScriptDirectory.string()); |
554 | |
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555 if (pythonConfig.GetBooleanValue("DisplayMemoryUsage", false)) |
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556 { |
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557 displayMemoryUsageThread_ = boost::thread(DisplayMemoryUsageThread); |
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558 } |
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559 |
0 | 560 |
561 /** | |
562 * Force loading the declarations in the user script | |
563 **/ | |
564 | |
565 PythonLock lock; | |
566 | |
567 { | |
568 PythonModule module(lock, userScriptName_); | |
569 } | |
570 | |
571 std::string traceback; | |
572 if (lock.HasErrorOccurred(traceback)) | |
573 { | |
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574 ORTHANC_PLUGINS_LOG_ERROR("Error during the installation of the Python script, " |
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575 "traceback:\n" + traceback); |
0 | 576 return -1; |
577 } | |
578 } | |
579 } | |
580 catch (ORTHANC_PLUGINS_EXCEPTION_CLASS& e) | |
581 { | |
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582 ORTHANC_PLUGINS_LOG_ERROR("Exception while starting the Python plugin: " + |
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583 std::string(e.What(c))); |
0 | 584 return -1; |
585 } | |
586 | |
587 return 0; | |
588 } | |
589 | |
590 | |
591 ORTHANC_PLUGINS_API void OrthancPluginFinalize() | |
592 { | |
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593 ORTHANC_PLUGINS_LOG_WARNING("Python plugin is finalizing"); |
0 | 594 |
595 if (pythonEnabled_) | |
596 { | |
597 FinalizeOnChangeCallback(); | |
598 FinalizeRestCallbacks(); | |
599 FinalizeOnStoredInstanceCallback(); | |
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600 FinalizeIncomingHttpRequestFilter(); |
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601 FinalizeDicomScpCallbacks(); |
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602 |
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603 displayMemoryUsageStopping_ = true; |
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604 |
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605 if (displayMemoryUsageThread_.joinable()) |
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606 { |
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607 displayMemoryUsageThread_.join(); |
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608 } |
0 | 609 |
610 PythonLock::GlobalFinalize(); | |
611 } | |
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612 |
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613 OrthancPlugins::ResetGlobalContext(); |
0 | 614 } |
615 | |
616 | |
617 ORTHANC_PLUGINS_API const char* OrthancPluginGetName() | |
618 { | |
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619 return PLUGIN_NAME; |
0 | 620 } |
621 | |
622 | |
623 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion() | |
624 { | |
625 return PLUGIN_VERSION; | |
626 } | |
627 } |