Mercurial > hg > orthanc-python
annotate Sources/Plugin.cpp @ 96:627b8a19fb9f
orthanc.RegisterIncomingCStoreInstanceFilter()
author | Alain Mazy <am@osimis.io> |
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date | Fri, 15 Oct 2021 18:36:24 +0200 |
parents | 068551520123 |
children | 465bf098554b |
rev | line source |
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0 | 1 /** |
2 * Python plugin for Orthanc | |
56
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upgrade to year 2021
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3 * Copyright (C) 2020-2021 Osimis S.A., Belgium |
0 | 4 * |
5 * This program is free software: you can redistribute it and/or | |
6 * modify it under the terms of the GNU Affero General Public License | |
7 * as published by the Free Software Foundation, either version 3 of | |
8 * the License, or (at your option) any later version. | |
9 * | |
10 * This program is distributed in the hope that it will be useful, but | |
11 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 * Affero General Public License for more details. | |
14 * | |
15 * You should have received a copy of the GNU Affero General Public License | |
16 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
17 **/ | |
18 | |
19 | |
20 // http://edcjones.tripod.com/refcount.html | |
21 // https://docs.python.org/3/extending/extending.html | |
22 | |
23 // https://www.codevate.com/blog/7-concurrency-with-embedded-python-in-a-multi-threaded-c-application | |
24 // https://fr.slideshare.net/YiLungTsai/embed-python | |
25 | |
26 | |
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27 #include "DicomScpCallbacks.h" |
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28 #include "IncomingHttpRequestFilter.h" |
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29 #include "OnChangeCallback.h" |
0 | 30 #include "OnStoredInstanceCallback.h" |
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31 #include "IncomingInstanceFilter.h" |
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32 #include "StorageArea.h" |
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33 |
0 | 34 #include "RestCallbacks.h" |
35 #include "PythonModule.h" | |
36 | |
37 #include "Autogenerated/sdk.h" | |
38 | |
36
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39 #include "../Resources/Orthanc/Plugins/OrthancPluginCppWrapper.h" |
0 | 40 |
41 #include <boost/algorithm/string/predicate.hpp> | |
42 #include <boost/filesystem.hpp> | |
43 | |
47
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44 // The "dl_iterate_phdr()" function (to walk through shared libraries) |
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45 // is not available on Microsoft Windows and Apple OS X |
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46 #if defined(_WIN32) |
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47 # define HAS_DL_ITERATE 0 |
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48 #elif defined(__APPLE__) && defined(__MACH__) |
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49 # define HAS_DL_ITERATE 0 |
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50 #else |
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51 # define HAS_DL_ITERATE 1 |
0 | 52 #endif |
53 | |
54 | |
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55 #include "PythonString.h" |
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56 |
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57 PyObject* LookupDictionary(PyObject* module, PyObject* args) |
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58 { |
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59 const char* name = NULL; |
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60 |
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61 if (!PyArg_ParseTuple(args, "s", &name)) |
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62 { |
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63 PyErr_SetString(PyExc_TypeError, "Please provide a string containing the name of the DICOM tag of interest"); |
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64 return NULL; |
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65 } |
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66 else |
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67 { |
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68 OrthancPluginDictionaryEntry entry; |
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69 |
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70 OrthancPluginErrorCode code = OrthancPluginLookupDictionary(OrthancPlugins::GetGlobalContext(), &entry, name); |
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71 if (code == OrthancPluginErrorCode_Success) |
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72 { |
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73 /** |
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74 * "PyGILState_Ensure()" can be invoked several times from the |
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75 * same thread, so no problem in creating a PythonLock even if |
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76 * the GIL is already locked. |
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77 **/ |
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78 PythonLock lock; |
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79 |
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80 PythonObject kw(lock, PyDict_New()); |
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81 PyDict_SetItemString(kw.GetPyObject(), "Group", PyLong_FromUnsignedLong(entry.group)); |
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82 PyDict_SetItemString(kw.GetPyObject(), "Element", PyLong_FromUnsignedLong(entry.element)); |
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83 PyDict_SetItemString(kw.GetPyObject(), "ValueRepresentation", PyLong_FromUnsignedLong(entry.vr)); |
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84 PyDict_SetItemString(kw.GetPyObject(), "MinMultiplicity", PyLong_FromUnsignedLong(entry.minMultiplicity)); |
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85 PyDict_SetItemString(kw.GetPyObject(), "MaxMultiplicity", PyLong_FromUnsignedLong(entry.maxMultiplicity)); |
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86 |
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87 return kw.Release(); |
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88 } |
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89 else |
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90 { |
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91 std::string message = "Unknown DICOM tag: " + std::string(name); |
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92 PyErr_SetString(PyExc_TypeError, message.c_str()); |
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93 return NULL; |
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94 } |
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95 } |
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96 } |
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97 |
0 | 98 |
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99 PyObject* CreateDicom(PyObject* module, PyObject* args) |
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100 { |
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101 // The GIL is locked at this point (no need to create "PythonLock") |
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102 const char* json = NULL; |
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103 PyObject* pixelData = NULL; |
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104 long int flags = 0; |
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105 |
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106 if (!PyArg_ParseTuple(args, "sOl", &json, &pixelData, &flags)) |
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107 { |
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108 PyErr_SetString(PyExc_TypeError, "Please provide a JSON string, an orthanc.Image object, and a set of orthanc.CreateDicomFlags"); |
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109 return NULL; |
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110 } |
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111 else |
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112 { |
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113 OrthancPluginImage* image = NULL; |
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114 |
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115 if (pixelData == Py_None) |
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116 { |
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117 // No pixel data |
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118 } |
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119 else if (Py_TYPE(pixelData) == GetOrthancPluginImageType()) |
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120 { |
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121 image = reinterpret_cast<sdk_OrthancPluginImage_Object*>(pixelData)->object_; |
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122 } |
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123 else |
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124 { |
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125 PyErr_SetString(PyExc_TypeError, "Second parameter is not a valid orthanc.Image object"); |
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126 return NULL; |
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127 } |
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128 |
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129 OrthancPlugins::MemoryBuffer buffer; |
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130 OrthancPluginErrorCode code = OrthancPluginCreateDicom(OrthancPlugins::GetGlobalContext(), *buffer, json, image, |
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131 static_cast<OrthancPluginCreateDicomFlags>(flags)); |
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132 |
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133 if (code == OrthancPluginErrorCode_Success) |
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134 { |
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135 return PyBytes_FromStringAndSize(buffer.GetData(), buffer.GetSize()); |
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136 } |
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137 else |
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138 { |
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139 PyErr_SetString(PyExc_ValueError, "Cannot create the DICOM instance"); |
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140 return NULL; |
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141 } |
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142 } |
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143 } |
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144 |
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145 |
65
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146 PyObject* GetInstanceData(sdk_OrthancPluginDicomInstance_Object* self, PyObject *args) |
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147 { |
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148 // The GIL is locked at this point (no need to create "PythonLock") |
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149 |
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150 if (self->object_ == NULL) |
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151 { |
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152 PyErr_SetString(PyExc_ValueError, "Invalid object"); |
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153 return NULL; |
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154 } |
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155 else |
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156 { |
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157 OrthancPluginDicomInstance* instance = reinterpret_cast<sdk_OrthancPluginDicomInstance_Object*>(self)->object_; |
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158 |
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159 const void* data = OrthancPluginGetInstanceData(OrthancPlugins::GetGlobalContext(), instance); |
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160 size_t size = OrthancPluginGetInstanceSize(OrthancPlugins::GetGlobalContext(), instance); |
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161 |
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162 if (data == NULL && |
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163 size != 0) |
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164 { |
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165 PyErr_SetString(PyExc_ValueError, "Accessing an invalid orthanc.DicomInstance object"); |
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166 return NULL; |
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167 } |
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168 else |
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169 { |
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170 return PyBytes_FromStringAndSize(reinterpret_cast<const char*>(data), size); |
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171 } |
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172 } |
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173 } |
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174 |
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175 |
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176 /** |
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177 * Contrarily to "OrthancPluginGetImageBuffer()" that provides a |
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178 * read-write pointer, the method "orthanc.Image.GetImageBuffer()" |
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179 * returns a copy of the image buffer. Use "CreateImageFromBuffer()" |
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180 * to create an image from a Python buffer. |
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181 **/ |
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182 PyObject* GetImageBuffer(sdk_OrthancPluginImage_Object* self, PyObject *args) |
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183 { |
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184 // The GIL is locked at this point (no need to create "PythonLock") |
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185 |
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186 if (self->object_ == NULL) |
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187 { |
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188 PyErr_SetString(PyExc_ValueError, "Invalid object"); |
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189 return NULL; |
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190 } |
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191 else |
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192 { |
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193 OrthancPluginImage* image = reinterpret_cast<sdk_OrthancPluginImage_Object*>(self)->object_; |
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194 |
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195 const void* buffer = OrthancPluginGetImageBuffer(OrthancPlugins::GetGlobalContext(), image); |
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196 size_t size = (OrthancPluginGetImagePitch(OrthancPlugins::GetGlobalContext(), image) * |
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197 OrthancPluginGetImageHeight(OrthancPlugins::GetGlobalContext(), image)); |
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198 |
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199 if (buffer == NULL && |
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200 size != 0) |
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201 { |
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202 PyErr_SetString(PyExc_ValueError, "Accessing an invalid orthanc.Image object"); |
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203 return NULL; |
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204 } |
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205 else |
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206 { |
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207 return PyBytes_FromStringAndSize(reinterpret_cast<const char*>(buffer), size); |
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208 } |
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209 } |
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210 } |
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211 |
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212 |
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213 /** |
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214 * This function is the Python alternative for function |
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215 * "OrthancPluginCreateImageAccessor()". Indeed, it is not possible to |
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216 * share a memory buffer between Orthanc and Python, so we have to |
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217 * create a copy of the image. |
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218 **/ |
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219 PyObject* CreateImageFromBuffer(PyObject* module, PyObject* args) |
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220 { |
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221 // The GIL is locked at this point (no need to create "PythonLock") |
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222 |
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223 unsigned long format, width, height, sourcePitch; |
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224 Py_buffer buffer; |
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225 |
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226 if (!PyArg_ParseTuple(args, "kkkks*", &format, &width, &height, &sourcePitch, &buffer)) |
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227 { |
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228 PyErr_SetString(PyExc_TypeError, "5 arguments are needed: image.PixelFormat, width, height, pitch and memory buffer"); |
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229 return NULL; |
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230 } |
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231 else if (static_cast<Py_ssize_t>(sourcePitch * height) != buffer.len) |
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232 { |
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233 PyBuffer_Release(&buffer); |
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234 |
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235 PyErr_SetString(PyExc_TypeError, "The size of the memory buffer must match the product of height by pitch"); |
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236 return NULL; |
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237 } |
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238 else |
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239 { |
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240 OrthancPluginImage* image = OrthancPluginCreateImage( |
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241 OrthancPlugins::GetGlobalContext(), static_cast<OrthancPluginPixelFormat>(format), width, height); |
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242 |
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243 if (image == NULL) |
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244 { |
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245 PyBuffer_Release(&buffer); |
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246 |
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247 PyErr_SetString(PyExc_ValueError, "Cannot create the image"); |
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248 return NULL; |
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249 } |
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250 else |
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251 { |
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252 // Copy the image line by line |
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253 unsigned long targetPitch = OrthancPluginGetImagePitch(OrthancPlugins::GetGlobalContext(), image); |
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254 |
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255 const uint8_t* sourcePixels = reinterpret_cast<const uint8_t*>(buffer.buf); |
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256 uint8_t* targetPixels = reinterpret_cast<uint8_t*>(OrthancPluginGetImageBuffer(OrthancPlugins::GetGlobalContext(), image)); |
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257 |
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258 unsigned long rowSize = std::min(sourcePitch, targetPitch); |
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259 |
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260 for (unsigned int y = 0; y < height; y++) |
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261 { |
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262 memcpy(targetPixels, sourcePixels, rowSize); |
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263 targetPixels += targetPitch; |
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264 sourcePixels += sourcePitch; |
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265 } |
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266 |
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267 PyBuffer_Release(&buffer); |
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268 |
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269 { |
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270 PyObject *argList = Py_BuildValue("Lb", image, false /* not borrowed */); |
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271 PyObject *python = PyObject_CallObject((PyObject *) GetOrthancPluginImageType(), argList); |
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272 Py_DECREF(argList); |
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273 return python; |
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274 } |
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275 } |
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276 } |
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277 } |
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278 |
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279 |
63
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280 |
0 | 281 static bool pythonEnabled_ = false; |
282 static std::string userScriptName_; | |
283 static std::vector<PyMethodDef> globalFunctions_; | |
284 | |
285 | |
286 static void InstallClasses(PyObject* module) | |
287 { | |
288 RegisterOrthancSdk(module); | |
289 } | |
290 | |
291 | |
292 static void SetupGlobalFunctions() | |
293 { | |
294 if (!globalFunctions_.empty()) | |
295 { | |
296 ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); | |
297 } | |
298 | |
299 /** | |
300 * Add all the manual global functions | |
301 **/ | |
302 | |
303 std::list<PyMethodDef> functions; | |
304 | |
305 { | |
306 PyMethodDef f = { "RegisterRestCallback", RegisterRestCallback, METH_VARARGS, "" }; | |
307 functions.push_back(f); | |
308 } | |
309 | |
310 { | |
311 PyMethodDef f = { "RegisterOnChangeCallback", RegisterOnChangeCallback, METH_VARARGS, "" }; | |
312 functions.push_back(f); | |
313 } | |
314 | |
315 { | |
316 PyMethodDef f = { "RegisterOnStoredInstanceCallback", RegisterOnStoredInstanceCallback, | |
317 METH_VARARGS, "" }; | |
318 functions.push_back(f); | |
319 } | |
50
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320 |
63
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321 |
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322 /** |
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323 * New in release 3.0 |
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324 **/ |
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325 |
50
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326 { |
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327 PyMethodDef f = { "RegisterIncomingHttpRequestFilter", RegisterIncomingHttpRequestFilter, METH_VARARGS, "" }; |
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328 functions.push_back(f); |
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329 } |
63
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330 |
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331 |
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332 /** |
64
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333 * New in release 3.2 |
63
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334 **/ |
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335 |
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336 { |
66
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337 PyMethodDef f = { "LookupDictionary", LookupDictionary, METH_VARARGS, "" }; |
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338 functions.push_back(f); |
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339 } |
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340 |
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341 { |
63
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342 PyMethodDef f = { "CreateDicom", CreateDicom, METH_VARARGS, "" }; |
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343 functions.push_back(f); |
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344 } |
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345 |
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346 { |
65
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347 PyMethodDef f = { "CreateImageFromBuffer", CreateImageFromBuffer, METH_VARARGS, "" }; |
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348 functions.push_back(f); |
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349 } |
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350 |
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351 { |
63
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352 PyMethodDef f = { "RegisterFindCallback", RegisterFindCallback, METH_VARARGS, "" }; |
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353 functions.push_back(f); |
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354 } |
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355 |
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356 { |
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357 PyMethodDef f = { "RegisterMoveCallback", RegisterMoveCallback, METH_VARARGS, "" }; |
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358 functions.push_back(f); |
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359 } |
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360 |
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361 { |
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362 PyMethodDef f = { "RegisterWorklistCallback", RegisterWorklistCallback, METH_VARARGS, "" }; |
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363 functions.push_back(f); |
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364 } |
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365 |
0 | 366 |
367 /** | |
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368 * New in release 3.3 |
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369 **/ |
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370 |
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371 { |
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372 PyMethodDef f = { "RegisterStorageArea", RegisterStorageArea, METH_VARARGS, "" }; |
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373 functions.push_back(f); |
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374 } |
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375 |
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376 |
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377 /** |
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378 * New in release 3.5 |
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379 **/ |
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380 |
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381 { |
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382 PyMethodDef f = { "RegisterIncomingCStoreInstanceFilter", RegisterIncomingCStoreInstanceFilter, METH_VARARGS, "" }; |
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383 functions.push_back(f); |
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384 } |
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385 |
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386 /** |
0 | 387 * Append all the global functions that were automatically generated |
388 **/ | |
389 | |
390 const PyMethodDef* sdk = GetOrthancSdkFunctions(); | |
391 | |
392 for (size_t i = 0; sdk[i].ml_name != NULL; i++) | |
393 { | |
394 functions.push_back(sdk[i]); | |
395 } | |
396 | |
397 /** | |
398 * Flatten the list of functions into the vector | |
399 **/ | |
400 | |
401 globalFunctions_.resize(functions.size()); | |
402 std::copy(functions.begin(), functions.end(), globalFunctions_.begin()); | |
403 | |
404 PyMethodDef sentinel = { NULL }; | |
405 globalFunctions_.push_back(sentinel); | |
406 } | |
407 | |
408 | |
409 static PyMethodDef* GetGlobalFunctions() | |
410 { | |
411 if (globalFunctions_.empty()) | |
412 { | |
413 // "SetupGlobalFunctions()" should have been called | |
414 ORTHANC_PLUGINS_THROW_EXCEPTION(BadSequenceOfCalls); | |
415 } | |
416 else | |
417 { | |
418 return &globalFunctions_[0]; | |
419 } | |
420 } | |
421 | |
422 | |
423 | |
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424 #if HAS_DL_ITERATE == 1 |
0 | 425 |
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426 #include <dlfcn.h> |
0 | 427 #include <link.h> // For dl_phdr_info |
428 | |
429 static int ForceImportCallback(struct dl_phdr_info *info, size_t size, void *data) | |
430 { | |
431 /** | |
432 * The following line solves the error: "ImportError: | |
433 * /usr/lib/python2.7/dist-packages/PIL/_imaging.x86_64-linux-gnu.so: | |
434 * undefined symbol: PyExc_SystemError" | |
435 * https://stackoverflow.com/a/48517485/881731 | |
436 * | |
437 * dlopen("/usr/lib/x86_64-linux-gnu/libpython2.7.so", RTLD_NOW | RTLD_LAZY | RTLD_GLOBAL); | |
438 * | |
439 * Another fix consists in using LD_PRELOAD as follows: | |
440 * LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libpython2.7.so ~/Subversion/orthanc/i/Orthanc tutu.json | |
441 **/ | |
442 | |
443 std::string module(info->dlpi_name); | |
444 | |
445 if (module.find("python") != std::string::npos) | |
446 { | |
447 OrthancPlugins::LogWarning("Force global loading of Python shared library: " + module); | |
448 dlopen(module.c_str(), RTLD_NOW | RTLD_LAZY | RTLD_GLOBAL); | |
449 } | |
450 | |
451 return 0; | |
452 } | |
453 | |
454 #endif | |
455 | |
456 | |
457 extern "C" | |
458 { | |
459 ORTHANC_PLUGINS_API int32_t OrthancPluginInitialize(OrthancPluginContext* c) | |
460 { | |
461 OrthancPlugins::SetGlobalContext(c); | |
462 OrthancPlugins::LogWarning("Python plugin is initializing"); | |
463 | |
464 | |
465 /* Check the version of the Orthanc core */ | |
466 if (OrthancPluginCheckVersion(c) == 0) | |
467 { | |
468 char info[1024]; | |
469 sprintf(info, "Your version of Orthanc (%s) must be above %d.%d.%d to run this plugin", | |
470 c->orthancVersion, | |
471 ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER, | |
472 ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER, | |
473 ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER); | |
474 OrthancPluginLogError(c, info); | |
475 return -1; | |
476 } | |
11 | 477 |
478 OrthancPluginSetDescription(c, "Run Python scripts as Orthanc plugins"); | |
479 | |
0 | 480 try |
481 { | |
482 /** | |
483 * Detection of the user script | |
484 **/ | |
485 | |
486 OrthancPlugins::OrthancConfiguration config; | |
487 | |
488 static const char* const OPTION = "PythonScript"; | |
489 | |
490 std::string script; | |
491 if (!config.LookupStringValue(script, OPTION)) | |
492 { | |
493 pythonEnabled_ = false; | |
494 | |
495 OrthancPlugins::LogWarning("The option \"" + std::string(OPTION) + "\" is not provided: " + | |
496 "Python scripting is disabled"); | |
497 } | |
498 else | |
499 { | |
500 pythonEnabled_ = true; | |
501 | |
502 /** | |
503 * Installation of the user script | |
504 **/ | |
505 | |
506 const boost::filesystem::path path(script); | |
507 if (!boost::iequals(path.extension().string(), ".py")) | |
508 { | |
509 OrthancPlugins::LogError("Python script must have the \".py\" file extension: " + | |
510 path.string()); | |
511 return -1; | |
512 } | |
513 | |
514 if (!boost::filesystem::is_regular_file(path)) | |
515 { | |
516 OrthancPlugins::LogError("Inexistent directory for the Python script: " + | |
517 path.string()); | |
518 return -1; | |
519 } | |
520 | |
521 boost::filesystem::path userScriptDirectory = boost::filesystem::absolute(path).parent_path(); | |
522 | |
523 { | |
524 boost::filesystem::path module = path.filename().replace_extension(""); | |
525 userScriptName_ = module.string(); | |
526 } | |
527 | |
528 OrthancPlugins::LogWarning("Using Python script \"" + userScriptName_ + | |
529 ".py\" from directory: " + userScriptDirectory.string()); | |
530 | |
531 | |
532 /** | |
533 * Initialization of Python | |
534 **/ | |
535 | |
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536 #if HAS_DL_ITERATE == 1 |
0 | 537 dl_iterate_phdr(ForceImportCallback, NULL); |
538 #endif | |
539 | |
540 SetupGlobalFunctions(); | |
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541 PythonLock::GlobalInitialize("orthanc", "OrthancException", |
0 | 542 GetGlobalFunctions, InstallClasses, |
543 config.GetBooleanValue("PythonVerbose", false)); | |
544 PythonLock::AddSysPath(userScriptDirectory.string()); | |
545 | |
546 | |
547 /** | |
548 * Force loading the declarations in the user script | |
549 **/ | |
550 | |
551 PythonLock lock; | |
552 | |
553 { | |
554 PythonModule module(lock, userScriptName_); | |
555 } | |
556 | |
557 std::string traceback; | |
558 if (lock.HasErrorOccurred(traceback)) | |
559 { | |
560 OrthancPlugins::LogError("Error during the installation of the Python script, " | |
561 "traceback:\n" + traceback); | |
562 return -1; | |
563 } | |
564 } | |
565 } | |
566 catch (ORTHANC_PLUGINS_EXCEPTION_CLASS& e) | |
567 { | |
568 OrthancPlugins::LogError("Exception while starting the Python plugin: " + | |
569 std::string(e.What(c))); | |
570 return -1; | |
571 } | |
572 | |
573 return 0; | |
574 } | |
575 | |
576 | |
577 ORTHANC_PLUGINS_API void OrthancPluginFinalize() | |
578 { | |
579 OrthancPlugins::LogWarning("Python plugin is finalizing"); | |
580 | |
581 if (pythonEnabled_) | |
582 { | |
583 FinalizeOnChangeCallback(); | |
584 FinalizeRestCallbacks(); | |
585 FinalizeOnStoredInstanceCallback(); | |
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586 FinalizeIncomingHttpRequestFilter(); |
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587 FinalizeDicomScpCallbacks(); |
0 | 588 |
589 PythonLock::GlobalFinalize(); | |
590 } | |
591 } | |
592 | |
593 | |
594 ORTHANC_PLUGINS_API const char* OrthancPluginGetName() | |
595 { | |
596 return "python"; | |
597 } | |
598 | |
599 | |
600 ORTHANC_PLUGINS_API const char* OrthancPluginGetVersion() | |
601 { | |
602 return PLUGIN_VERSION; | |
603 } | |
604 } |