--- a/CMakeLists.txt	Thu Jul 19 15:04:00 2018 +0200
+++ b/CMakeLists.txt	Thu Jul 19 15:04:50 2018 +0200
@@ -19,7 +19,7 @@
 
 project(OrthancAuthorization)
 
-set(ORTHANC_AUTHORIZATION_VERSION "mainline")
+set(ORTHANC_AUTHORIZATION_VERSION "0.2.1")
 
 # Parameters of the build
 set(STATIC_BUILD OFF CACHE BOOL "Static build of the third-party libraries (necessary for Windows)")

--- a/NEWS	Thu Jul 19 15:04:00 2018 +0200
+++ b/NEWS	Thu Jul 19 15:04:50 2018 +0200
@@ -1,8 +1,12 @@
 Pending changes in the mainline
 ===============================
 
+* Added automated build
 
-* Added automated build
+2018-03-09 - v 0.2.1
+====================
+
+* Upgraded sdk to 1.3.1
 
 2018-03-08 - v 0.2.0
 ====================

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Resources/Orthanc/Sdk-1.3.1/orthanc/OrthancCPlugin.h	Thu Jul 19 15:04:50 2018 +0200
@@ -0,0 +1,5660 @@
+/**
+ * \mainpage
+ *
+ * This C/C++ SDK allows external developers to create plugins that
+ * can be loaded into Orthanc to extend its functionality. Each
+ * Orthanc plugin must expose 4 public functions with the following
+ * signatures:
+ * 
+ * -# <tt>int32_t OrthancPluginInitialize(const OrthancPluginContext* context)</tt>:
+ *    This function is invoked by Orthanc when it loads the plugin on startup.
+ *    The plugin must:
+ *    - Check its compatibility with the Orthanc version using
+ *      ::OrthancPluginCheckVersion().
+ *    - Store the context pointer so that it can use the plugin 
+ *      services of Orthanc.
+ *    - Register all its REST callbacks using ::OrthancPluginRegisterRestCallback().
+ *    - Possibly register its callback for received DICOM instances using ::OrthancPluginRegisterOnStoredInstanceCallback().
+ *    - Possibly register its callback for changes to the DICOM store using ::OrthancPluginRegisterOnChangeCallback().
+ *    - Possibly register a custom storage area using ::OrthancPluginRegisterStorageArea().
+ *    - Possibly register a custom database back-end area using OrthancPluginRegisterDatabaseBackendV2().
+ *    - Possibly register a handler for C-Find SCP using OrthancPluginRegisterFindCallback().
+ *    - Possibly register a handler for C-Find SCP against DICOM worklists using OrthancPluginRegisterWorklistCallback().
+ *    - Possibly register a handler for C-Move SCP using OrthancPluginRegisterMoveCallback().
+ *    - Possibly register a custom decoder for DICOM images using OrthancPluginRegisterDecodeImageCallback().
+ *    - Possibly register a callback to filter incoming HTTP requests using OrthancPluginRegisterIncomingHttpRequestFilter2().
+ * -# <tt>void OrthancPluginFinalize()</tt>:
+ *    This function is invoked by Orthanc during its shutdown. The plugin
+ *    must free all its memory.
+ * -# <tt>const char* OrthancPluginGetName()</tt>:
+ *    The plugin must return a short string to identify itself.
+ * -# <tt>const char* OrthancPluginGetVersion()</tt>:
+ *    The plugin must return a string containing its version number.
+ *
+ * The name and the version of a plugin is only used to prevent it
+ * from being loaded twice. Note that, in C++, it is mandatory to
+ * declare these functions within an <tt>extern "C"</tt> section.
+ * 
+ * To ensure multi-threading safety, the various REST callbacks are
+ * guaranteed to be executed in mutual exclusion since Orthanc
+ * 0.8.5. If this feature is undesired (notably when developing
+ * high-performance plugins handling simultaneous requests), use
+ * ::OrthancPluginRegisterRestCallbackNoLock().
+ **/
+
+
+
+/**
+ * @defgroup Images Images and compression
+ * @brief Functions to deal with images and compressed buffers.
+ *
+ * @defgroup REST REST
+ * @brief Functions to answer REST requests in a callback.
+ *
+ * @defgroup Callbacks Callbacks
+ * @brief Functions to register and manage callbacks by the plugins.
+ *
+ * @defgroup DicomCallbaks DicomCallbaks
+ * @brief Functions to register and manage DICOM callbacks (worklists, C-Find, C-MOVE).
+ *
+ * @defgroup Orthanc Orthanc
+ * @brief Functions to access the content of the Orthanc server.
+ **/
+
+
+
+/**
+ * @defgroup Toolbox Toolbox
+ * @brief Generic functions to help with the creation of plugins.
+ **/
+
+
+
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017 Osimis, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders of this
+ * program give permission to link the code of its release with the
+ * OpenSSL project's "OpenSSL" library (or with modified versions of it
+ * that use the same license as the "OpenSSL" library), and distribute
+ * the linked executables. You must obey the GNU General Public License
+ * in all respects for all of the code used other than "OpenSSL". If you
+ * modify file(s) with this exception, you may extend this exception to
+ * your version of the file(s), but you are not obligated to do so. If
+ * you do not wish to do so, delete this exception statement from your
+ * version. If you delete this exception statement from all source files
+ * in the program, then also delete it here.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+
+#pragma once
+
+
+#include <stdio.h>
+#include <string.h>
+
+#ifdef WIN32
+#define ORTHANC_PLUGINS_API __declspec(dllexport)
+#else
+#define ORTHANC_PLUGINS_API
+#endif
+
+#define ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER     1
+#define ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER     3
+#define ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER  1
+
+
+#if !defined(ORTHANC_PLUGINS_VERSION_IS_ABOVE)
+#define ORTHANC_PLUGINS_VERSION_IS_ABOVE(major, minor, revision) \
+  (ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER > major ||               \
+   (ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER == major &&             \
+    (ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER > minor ||             \
+     (ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER == minor &&           \
+      ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER >= revision))))
+#endif
+
+
+
+/********************************************************************
+ ** Check that function inlining is properly supported. The use of
+ ** inlining is required, to avoid the duplication of object code
+ ** between two compilation modules that would use the Orthanc Plugin
+ ** API.
+ ********************************************************************/
+
+/* If the auto-detection of the "inline" keyword below does not work
+   automatically and that your compiler is known to properly support
+   inlining, uncomment the following #define and adapt the definition
+   of "static inline". */
+
+/* #define ORTHANC_PLUGIN_INLINE static inline */
+
+#ifndef ORTHANC_PLUGIN_INLINE
+#  if __STDC_VERSION__ >= 199901L
+/*   This is C99 or above: http://predef.sourceforge.net/prestd.html */
+#    define ORTHANC_PLUGIN_INLINE static inline
+#  elif defined(__cplusplus)
+/*   This is C++ */
+#    define ORTHANC_PLUGIN_INLINE static inline
+#  elif defined(__GNUC__)
+/*   This is GCC running in C89 mode */
+#    define ORTHANC_PLUGIN_INLINE static __inline
+#  elif defined(_MSC_VER)
+/*   This is Visual Studio running in C89 mode */
+#    define ORTHANC_PLUGIN_INLINE static __inline
+#  else
+#    error Your compiler is not known to support the "inline" keyword
+#  endif
+#endif
+
+
+
+/********************************************************************
+ ** Inclusion of standard libraries.
+ ********************************************************************/
+
+/**
+ * For Microsoft Visual Studio, a compatibility "stdint.h" can be
+ * downloaded at the following URL:
+ * https://orthanc.googlecode.com/hg/Resources/ThirdParty/VisualStudio/stdint.h
+ **/
+#include <stdint.h>
+
+#include <stdlib.h>
+
+
+
+/********************************************************************
+ ** Definition of the Orthanc Plugin API.
+ ********************************************************************/
+
+/** @{ */
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+  /**
+   * The various error codes that can be returned by the Orthanc core.
+   **/
+  typedef enum
+  {
+    OrthancPluginErrorCode_InternalError = -1    /*!< Internal error */,
+    OrthancPluginErrorCode_Success = 0    /*!< Success */,
+    OrthancPluginErrorCode_Plugin = 1    /*!< Error encountered within the plugin engine */,
+    OrthancPluginErrorCode_NotImplemented = 2    /*!< Not implemented yet */,
+    OrthancPluginErrorCode_ParameterOutOfRange = 3    /*!< Parameter out of range */,
+    OrthancPluginErrorCode_NotEnoughMemory = 4    /*!< The server hosting Orthanc is running out of memory */,
+    OrthancPluginErrorCode_BadParameterType = 5    /*!< Bad type for a parameter */,
+    OrthancPluginErrorCode_BadSequenceOfCalls = 6    /*!< Bad sequence of calls */,
+    OrthancPluginErrorCode_InexistentItem = 7    /*!< Accessing an inexistent item */,
+    OrthancPluginErrorCode_BadRequest = 8    /*!< Bad request */,
+    OrthancPluginErrorCode_NetworkProtocol = 9    /*!< Error in the network protocol */,
+    OrthancPluginErrorCode_SystemCommand = 10    /*!< Error while calling a system command */,
+    OrthancPluginErrorCode_Database = 11    /*!< Error with the database engine */,
+    OrthancPluginErrorCode_UriSyntax = 12    /*!< Badly formatted URI */,
+    OrthancPluginErrorCode_InexistentFile = 13    /*!< Inexistent file */,
+    OrthancPluginErrorCode_CannotWriteFile = 14    /*!< Cannot write to file */,
+    OrthancPluginErrorCode_BadFileFormat = 15    /*!< Bad file format */,
+    OrthancPluginErrorCode_Timeout = 16    /*!< Timeout */,
+    OrthancPluginErrorCode_UnknownResource = 17    /*!< Unknown resource */,
+    OrthancPluginErrorCode_IncompatibleDatabaseVersion = 18    /*!< Incompatible version of the database */,
+    OrthancPluginErrorCode_FullStorage = 19    /*!< The file storage is full */,
+    OrthancPluginErrorCode_CorruptedFile = 20    /*!< Corrupted file (e.g. inconsistent MD5 hash) */,
+    OrthancPluginErrorCode_InexistentTag = 21    /*!< Inexistent tag */,
+    OrthancPluginErrorCode_ReadOnly = 22    /*!< Cannot modify a read-only data structure */,
+    OrthancPluginErrorCode_IncompatibleImageFormat = 23    /*!< Incompatible format of the images */,
+    OrthancPluginErrorCode_IncompatibleImageSize = 24    /*!< Incompatible size of the images */,
+    OrthancPluginErrorCode_SharedLibrary = 25    /*!< Error while using a shared library (plugin) */,
+    OrthancPluginErrorCode_UnknownPluginService = 26    /*!< Plugin invoking an unknown service */,
+    OrthancPluginErrorCode_UnknownDicomTag = 27    /*!< Unknown DICOM tag */,
+    OrthancPluginErrorCode_BadJson = 28    /*!< Cannot parse a JSON document */,
+    OrthancPluginErrorCode_Unauthorized = 29    /*!< Bad credentials were provided to an HTTP request */,
+    OrthancPluginErrorCode_BadFont = 30    /*!< Badly formatted font file */,
+    OrthancPluginErrorCode_DatabasePlugin = 31    /*!< The plugin implementing a custom database back-end does not fulfill the proper interface */,
+    OrthancPluginErrorCode_StorageAreaPlugin = 32    /*!< Error in the plugin implementing a custom storage area */,
+    OrthancPluginErrorCode_EmptyRequest = 33    /*!< The request is empty */,
+    OrthancPluginErrorCode_NotAcceptable = 34    /*!< Cannot send a response which is acceptable according to the Accept HTTP header */,
+    OrthancPluginErrorCode_NullPointer = 35    /*!< Cannot handle a NULL pointer */,
+    OrthancPluginErrorCode_SQLiteNotOpened = 1000    /*!< SQLite: The database is not opened */,
+    OrthancPluginErrorCode_SQLiteAlreadyOpened = 1001    /*!< SQLite: Connection is already open */,
+    OrthancPluginErrorCode_SQLiteCannotOpen = 1002    /*!< SQLite: Unable to open the database */,
+    OrthancPluginErrorCode_SQLiteStatementAlreadyUsed = 1003    /*!< SQLite: This cached statement is already being referred to */,
+    OrthancPluginErrorCode_SQLiteExecute = 1004    /*!< SQLite: Cannot execute a command */,
+    OrthancPluginErrorCode_SQLiteRollbackWithoutTransaction = 1005    /*!< SQLite: Rolling back a nonexistent transaction (have you called Begin()?) */,
+    OrthancPluginErrorCode_SQLiteCommitWithoutTransaction = 1006    /*!< SQLite: Committing a nonexistent transaction */,
+    OrthancPluginErrorCode_SQLiteRegisterFunction = 1007    /*!< SQLite: Unable to register a function */,
+    OrthancPluginErrorCode_SQLiteFlush = 1008    /*!< SQLite: Unable to flush the database */,
+    OrthancPluginErrorCode_SQLiteCannotRun = 1009    /*!< SQLite: Cannot run a cached statement */,
+    OrthancPluginErrorCode_SQLiteCannotStep = 1010    /*!< SQLite: Cannot step over a cached statement */,
+    OrthancPluginErrorCode_SQLiteBindOutOfRange = 1011    /*!< SQLite: Bing a value while out of range (serious error) */,
+    OrthancPluginErrorCode_SQLitePrepareStatement = 1012    /*!< SQLite: Cannot prepare a cached statement */,
+    OrthancPluginErrorCode_SQLiteTransactionAlreadyStarted = 1013    /*!< SQLite: Beginning the same transaction twice */,
+    OrthancPluginErrorCode_SQLiteTransactionCommit = 1014    /*!< SQLite: Failure when committing the transaction */,
+    OrthancPluginErrorCode_SQLiteTransactionBegin = 1015    /*!< SQLite: Cannot start a transaction */,
+    OrthancPluginErrorCode_DirectoryOverFile = 2000    /*!< The directory to be created is already occupied by a regular file */,
+    OrthancPluginErrorCode_FileStorageCannotWrite = 2001    /*!< Unable to create a subdirectory or a file in the file storage */,
+    OrthancPluginErrorCode_DirectoryExpected = 2002    /*!< The specified path does not point to a directory */,
+    OrthancPluginErrorCode_HttpPortInUse = 2003    /*!< The TCP port of the HTTP server is privileged or already in use */,
+    OrthancPluginErrorCode_DicomPortInUse = 2004    /*!< The TCP port of the DICOM server is privileged or already in use */,
+    OrthancPluginErrorCode_BadHttpStatusInRest = 2005    /*!< This HTTP status is not allowed in a REST API */,
+    OrthancPluginErrorCode_RegularFileExpected = 2006    /*!< The specified path does not point to a regular file */,
+    OrthancPluginErrorCode_PathToExecutable = 2007    /*!< Unable to get the path to the executable */,
+    OrthancPluginErrorCode_MakeDirectory = 2008    /*!< Cannot create a directory */,
+    OrthancPluginErrorCode_BadApplicationEntityTitle = 2009    /*!< An application entity title (AET) cannot be empty or be longer than 16 characters */,
+    OrthancPluginErrorCode_NoCFindHandler = 2010    /*!< No request handler factory for DICOM C-FIND SCP */,
+    OrthancPluginErrorCode_NoCMoveHandler = 2011    /*!< No request handler factory for DICOM C-MOVE SCP */,
+    OrthancPluginErrorCode_NoCStoreHandler = 2012    /*!< No request handler factory for DICOM C-STORE SCP */,
+    OrthancPluginErrorCode_NoApplicationEntityFilter = 2013    /*!< No application entity filter */,
+    OrthancPluginErrorCode_NoSopClassOrInstance = 2014    /*!< DicomUserConnection: Unable to find the SOP class and instance */,
+    OrthancPluginErrorCode_NoPresentationContext = 2015    /*!< DicomUserConnection: No acceptable presentation context for modality */,
+    OrthancPluginErrorCode_DicomFindUnavailable = 2016    /*!< DicomUserConnection: The C-FIND command is not supported by the remote SCP */,
+    OrthancPluginErrorCode_DicomMoveUnavailable = 2017    /*!< DicomUserConnection: The C-MOVE command is not supported by the remote SCP */,
+    OrthancPluginErrorCode_CannotStoreInstance = 2018    /*!< Cannot store an instance */,
+    OrthancPluginErrorCode_CreateDicomNotString = 2019    /*!< Only string values are supported when creating DICOM instances */,
+    OrthancPluginErrorCode_CreateDicomOverrideTag = 2020    /*!< Trying to override a value inherited from a parent module */,
+    OrthancPluginErrorCode_CreateDicomUseContent = 2021    /*!< Use \"Content\" to inject an image into a new DICOM instance */,
+    OrthancPluginErrorCode_CreateDicomNoPayload = 2022    /*!< No payload is present for one instance in the series */,
+    OrthancPluginErrorCode_CreateDicomUseDataUriScheme = 2023    /*!< The payload of the DICOM instance must be specified according to Data URI scheme */,
+    OrthancPluginErrorCode_CreateDicomBadParent = 2024    /*!< Trying to attach a new DICOM instance to an inexistent resource */,
+    OrthancPluginErrorCode_CreateDicomParentIsInstance = 2025    /*!< Trying to attach a new DICOM instance to an instance (must be a series, study or patient) */,
+    OrthancPluginErrorCode_CreateDicomParentEncoding = 2026    /*!< Unable to get the encoding of the parent resource */,
+    OrthancPluginErrorCode_UnknownModality = 2027    /*!< Unknown modality */,
+    OrthancPluginErrorCode_BadJobOrdering = 2028    /*!< Bad ordering of filters in a job */,
+    OrthancPluginErrorCode_JsonToLuaTable = 2029    /*!< Cannot convert the given JSON object to a Lua table */,
+    OrthancPluginErrorCode_CannotCreateLua = 2030    /*!< Cannot create the Lua context */,
+    OrthancPluginErrorCode_CannotExecuteLua = 2031    /*!< Cannot execute a Lua command */,
+    OrthancPluginErrorCode_LuaAlreadyExecuted = 2032    /*!< Arguments cannot be pushed after the Lua function is executed */,
+    OrthancPluginErrorCode_LuaBadOutput = 2033    /*!< The Lua function does not give the expected number of outputs */,
+    OrthancPluginErrorCode_NotLuaPredicate = 2034    /*!< The Lua function is not a predicate (only true/false outputs allowed) */,
+    OrthancPluginErrorCode_LuaReturnsNoString = 2035    /*!< The Lua function does not return a string */,
+    OrthancPluginErrorCode_StorageAreaAlreadyRegistered = 2036    /*!< Another plugin has already registered a custom storage area */,
+    OrthancPluginErrorCode_DatabaseBackendAlreadyRegistered = 2037    /*!< Another plugin has already registered a custom database back-end */,
+    OrthancPluginErrorCode_DatabaseNotInitialized = 2038    /*!< Plugin trying to call the database during its initialization */,
+    OrthancPluginErrorCode_SslDisabled = 2039    /*!< Orthanc has been built without SSL support */,
+    OrthancPluginErrorCode_CannotOrderSlices = 2040    /*!< Unable to order the slices of the series */,
+    OrthancPluginErrorCode_NoWorklistHandler = 2041    /*!< No request handler factory for DICOM C-Find Modality SCP */,
+    OrthancPluginErrorCode_AlreadyExistingTag = 2042    /*!< Cannot override the value of a tag that already exists */,
+
+    _OrthancPluginErrorCode_INTERNAL = 0x7fffffff
+  } OrthancPluginErrorCode;
+
+
+  /**
+   * Forward declaration of one of the mandatory functions for Orthanc
+   * plugins.
+   **/
+  ORTHANC_PLUGINS_API const char* OrthancPluginGetName();
+
+
+  /**
+   * The various HTTP methods for a REST call.
+   **/
+  typedef enum
+  {
+    OrthancPluginHttpMethod_Get = 1,    /*!< GET request */
+    OrthancPluginHttpMethod_Post = 2,   /*!< POST request */
+    OrthancPluginHttpMethod_Put = 3,    /*!< PUT request */
+    OrthancPluginHttpMethod_Delete = 4, /*!< DELETE request */
+
+    _OrthancPluginHttpMethod_INTERNAL = 0x7fffffff
+  } OrthancPluginHttpMethod;
+
+
+  /**
+   * @brief The parameters of a REST request.
+   * @ingroup Callbacks
+   **/
+  typedef struct
+  {
+    /**
+     * @brief The HTTP method.
+     **/
+    OrthancPluginHttpMethod method;    
+
+    /**
+     * @brief The number of groups of the regular expression.
+     **/
+    uint32_t                groupsCount;
+
+    /**
+     * @brief The matched values for the groups of the regular expression.
+     **/
+    const char* const*      groups;
+
+    /**
+     * @brief For a GET request, the number of GET parameters.
+     **/
+    uint32_t                getCount;
+
+    /**
+     * @brief For a GET request, the keys of the GET parameters.
+     **/
+    const char* const*      getKeys;
+
+    /**
+     * @brief For a GET request, the values of the GET parameters.
+     **/
+    const char* const*      getValues;
+
+    /**
+     * @brief For a PUT or POST request, the content of the body.
+     **/
+    const char*             body;
+
+    /**
+     * @brief For a PUT or POST request, the number of bytes of the body.
+     **/
+    uint32_t                bodySize;
+
+
+    /* --------------------------------------------------
+       New in version 0.8.1
+       -------------------------------------------------- */
+
+    /**
+     * @brief The number of HTTP headers.
+     **/
+    uint32_t                headersCount;
+
+    /**
+     * @brief The keys of the HTTP headers (always converted to low-case).
+     **/
+    const char* const*      headersKeys;
+
+    /**
+     * @brief The values of the HTTP headers.
+     **/
+    const char* const*      headersValues;
+
+  } OrthancPluginHttpRequest;
+
+
+  typedef enum 
+  {
+    /* Generic services */
+    _OrthancPluginService_LogInfo = 1,
+    _OrthancPluginService_LogWarning = 2,
+    _OrthancPluginService_LogError = 3,
+    _OrthancPluginService_GetOrthancPath = 4,
+    _OrthancPluginService_GetOrthancDirectory = 5,
+    _OrthancPluginService_GetConfigurationPath = 6,
+    _OrthancPluginService_SetPluginProperty = 7,
+    _OrthancPluginService_GetGlobalProperty = 8,
+    _OrthancPluginService_SetGlobalProperty = 9,
+    _OrthancPluginService_GetCommandLineArgumentsCount = 10,
+    _OrthancPluginService_GetCommandLineArgument = 11,
+    _OrthancPluginService_GetExpectedDatabaseVersion = 12,
+    _OrthancPluginService_GetConfiguration = 13,
+    _OrthancPluginService_BufferCompression = 14,
+    _OrthancPluginService_ReadFile = 15,
+    _OrthancPluginService_WriteFile = 16,
+    _OrthancPluginService_GetErrorDescription = 17,
+    _OrthancPluginService_CallHttpClient = 18,
+    _OrthancPluginService_RegisterErrorCode = 19,
+    _OrthancPluginService_RegisterDictionaryTag = 20,
+    _OrthancPluginService_DicomBufferToJson = 21,
+    _OrthancPluginService_DicomInstanceToJson = 22,
+    _OrthancPluginService_CreateDicom = 23,
+    _OrthancPluginService_ComputeMd5 = 24,
+    _OrthancPluginService_ComputeSha1 = 25,
+    _OrthancPluginService_LookupDictionary = 26,
+    _OrthancPluginService_CallHttpClient2 = 27,
+    _OrthancPluginService_GenerateUuid = 28,
+    _OrthancPluginService_RegisterPrivateDictionaryTag = 29,
+
+    /* Registration of callbacks */
+    _OrthancPluginService_RegisterRestCallback = 1000,
+    _OrthancPluginService_RegisterOnStoredInstanceCallback = 1001,
+    _OrthancPluginService_RegisterStorageArea = 1002,
+    _OrthancPluginService_RegisterOnChangeCallback = 1003,
+    _OrthancPluginService_RegisterRestCallbackNoLock = 1004,
+    _OrthancPluginService_RegisterWorklistCallback = 1005,
+    _OrthancPluginService_RegisterDecodeImageCallback = 1006,
+    _OrthancPluginService_RegisterIncomingHttpRequestFilter = 1007,
+    _OrthancPluginService_RegisterFindCallback = 1008,
+    _OrthancPluginService_RegisterMoveCallback = 1009,
+    _OrthancPluginService_RegisterIncomingHttpRequestFilter2 = 1010,
+
+    /* Sending answers to REST calls */
+    _OrthancPluginService_AnswerBuffer = 2000,
+    _OrthancPluginService_CompressAndAnswerPngImage = 2001,  /* Unused as of Orthanc 0.9.4 */
+    _OrthancPluginService_Redirect = 2002,
+    _OrthancPluginService_SendHttpStatusCode = 2003,
+    _OrthancPluginService_SendUnauthorized = 2004,
+    _OrthancPluginService_SendMethodNotAllowed = 2005,
+    _OrthancPluginService_SetCookie = 2006,
+    _OrthancPluginService_SetHttpHeader = 2007,
+    _OrthancPluginService_StartMultipartAnswer = 2008,
+    _OrthancPluginService_SendMultipartItem = 2009,
+    _OrthancPluginService_SendHttpStatus = 2010,
+    _OrthancPluginService_CompressAndAnswerImage = 2011,
+    _OrthancPluginService_SendMultipartItem2 = 2012,
+
+    /* Access to the Orthanc database and API */
+    _OrthancPluginService_GetDicomForInstance = 3000,
+    _OrthancPluginService_RestApiGet = 3001,
+    _OrthancPluginService_RestApiPost = 3002,
+    _OrthancPluginService_RestApiDelete = 3003,
+    _OrthancPluginService_RestApiPut = 3004,
+    _OrthancPluginService_LookupPatient = 3005,
+    _OrthancPluginService_LookupStudy = 3006,
+    _OrthancPluginService_LookupSeries = 3007,
+    _OrthancPluginService_LookupInstance = 3008,
+    _OrthancPluginService_LookupStudyWithAccessionNumber = 3009,
+    _OrthancPluginService_RestApiGetAfterPlugins = 3010,
+    _OrthancPluginService_RestApiPostAfterPlugins = 3011,
+    _OrthancPluginService_RestApiDeleteAfterPlugins = 3012,
+    _OrthancPluginService_RestApiPutAfterPlugins = 3013,
+    _OrthancPluginService_ReconstructMainDicomTags = 3014,
+    _OrthancPluginService_RestApiGet2 = 3015,
+
+    /* Access to DICOM instances */
+    _OrthancPluginService_GetInstanceRemoteAet = 4000,
+    _OrthancPluginService_GetInstanceSize = 4001,
+    _OrthancPluginService_GetInstanceData = 4002,
+    _OrthancPluginService_GetInstanceJson = 4003,
+    _OrthancPluginService_GetInstanceSimplifiedJson = 4004,
+    _OrthancPluginService_HasInstanceMetadata = 4005,
+    _OrthancPluginService_GetInstanceMetadata = 4006,
+    _OrthancPluginService_GetInstanceOrigin = 4007,
+
+    /* Services for plugins implementing a database back-end */
+    _OrthancPluginService_RegisterDatabaseBackend = 5000,
+    _OrthancPluginService_DatabaseAnswer = 5001,
+    _OrthancPluginService_RegisterDatabaseBackendV2 = 5002,
+    _OrthancPluginService_StorageAreaCreate = 5003,
+    _OrthancPluginService_StorageAreaRead = 5004,
+    _OrthancPluginService_StorageAreaRemove = 5005,
+
+    /* Primitives for handling images */
+    _OrthancPluginService_GetImagePixelFormat = 6000,
+    _OrthancPluginService_GetImageWidth = 6001,
+    _OrthancPluginService_GetImageHeight = 6002,
+    _OrthancPluginService_GetImagePitch = 6003,
+    _OrthancPluginService_GetImageBuffer = 6004,
+    _OrthancPluginService_UncompressImage = 6005,
+    _OrthancPluginService_FreeImage = 6006,
+    _OrthancPluginService_CompressImage = 6007,
+    _OrthancPluginService_ConvertPixelFormat = 6008,
+    _OrthancPluginService_GetFontsCount = 6009,
+    _OrthancPluginService_GetFontInfo = 6010,
+    _OrthancPluginService_DrawText = 6011,
+    _OrthancPluginService_CreateImage = 6012,
+    _OrthancPluginService_CreateImageAccessor = 6013,
+    _OrthancPluginService_DecodeDicomImage = 6014,
+
+    /* Primitives for handling C-Find, C-Move and worklists */
+    _OrthancPluginService_WorklistAddAnswer = 7000,
+    _OrthancPluginService_WorklistMarkIncomplete = 7001,
+    _OrthancPluginService_WorklistIsMatch = 7002,
+    _OrthancPluginService_WorklistGetDicomQuery = 7003,
+    _OrthancPluginService_FindAddAnswer = 7004,
+    _OrthancPluginService_FindMarkIncomplete = 7005,
+    _OrthancPluginService_GetFindQuerySize = 7006,
+    _OrthancPluginService_GetFindQueryTag = 7007,
+    _OrthancPluginService_GetFindQueryTagName = 7008,
+    _OrthancPluginService_GetFindQueryValue = 7009,
+    _OrthancPluginService_CreateFindMatcher = 7010,
+    _OrthancPluginService_FreeFindMatcher = 7011,
+    _OrthancPluginService_FindMatcherIsMatch = 7012,
+
+    _OrthancPluginService_INTERNAL = 0x7fffffff
+  } _OrthancPluginService;
+
+
+  typedef enum
+  {
+    _OrthancPluginProperty_Description = 1,
+    _OrthancPluginProperty_RootUri = 2,
+    _OrthancPluginProperty_OrthancExplorer = 3,
+
+    _OrthancPluginProperty_INTERNAL = 0x7fffffff
+  } _OrthancPluginProperty;
+
+
+
+  /**
+   * The memory layout of the pixels of an image.
+   * @ingroup Images
+   **/
+  typedef enum
+  {
+    /**
+     * @brief Graylevel 8bpp image.
+     *
+     * The image is graylevel. Each pixel is unsigned and stored in
+     * one byte.
+     **/
+    OrthancPluginPixelFormat_Grayscale8 = 1,
+
+    /**
+     * @brief Graylevel, unsigned 16bpp image.
+     *
+     * The image is graylevel. Each pixel is unsigned and stored in
+     * two bytes.
+     **/
+    OrthancPluginPixelFormat_Grayscale16 = 2,
+
+    /**
+     * @brief Graylevel, signed 16bpp image.
+     *
+     * The image is graylevel. Each pixel is signed and stored in two
+     * bytes.
+     **/
+    OrthancPluginPixelFormat_SignedGrayscale16 = 3,
+
+    /**
+     * @brief Color image in RGB24 format.
+     *
+     * This format describes a color image. The pixels are stored in 3
+     * consecutive bytes. The memory layout is RGB.
+     **/
+    OrthancPluginPixelFormat_RGB24 = 4,
+
+    /**
+     * @brief Color image in RGBA32 format.
+     *
+     * This format describes a color image. The pixels are stored in 4
+     * consecutive bytes. The memory layout is RGBA.
+     **/
+    OrthancPluginPixelFormat_RGBA32 = 5,
+
+    OrthancPluginPixelFormat_Unknown = 6,   /*!< Unknown pixel format */
+
+    /**
+     * @brief Color image in RGB48 format.
+     *
+     * This format describes a color image. The pixels are stored in 6
+     * consecutive bytes. The memory layout is RRGGBB.
+     **/
+    OrthancPluginPixelFormat_RGB48 = 7,
+
+    /**
+     * @brief Graylevel, unsigned 32bpp image.
+     *
+     * The image is graylevel. Each pixel is unsigned and stored in
+     * four bytes.
+     **/
+    OrthancPluginPixelFormat_Grayscale32 = 8,
+
+    /**
+     * @brief Graylevel, floating-point 32bpp image.
+     *
+     * The image is graylevel. Each pixel is floating-point and stored
+     * in four bytes.
+     **/
+    OrthancPluginPixelFormat_Float32 = 9,
+
+    /**
+     * @brief Color image in BGRA32 format.
+     *
+     * This format describes a color image. The pixels are stored in 4
+     * consecutive bytes. The memory layout is BGRA.
+     **/
+    OrthancPluginPixelFormat_BGRA32 = 10,
+
+    _OrthancPluginPixelFormat_INTERNAL = 0x7fffffff
+  } OrthancPluginPixelFormat;
+
+
+
+  /**
+   * The content types that are supported by Orthanc plugins.
+   **/
+  typedef enum
+  {
+    OrthancPluginContentType_Unknown = 0,      /*!< Unknown content type */
+    OrthancPluginContentType_Dicom = 1,        /*!< DICOM */
+    OrthancPluginContentType_DicomAsJson = 2,  /*!< JSON summary of a DICOM file */
+
+    _OrthancPluginContentType_INTERNAL = 0x7fffffff
+  } OrthancPluginContentType;
+
+
+
+  /**
+   * The supported types of DICOM resources.
+   **/
+  typedef enum
+  {
+    OrthancPluginResourceType_Patient = 0,     /*!< Patient */
+    OrthancPluginResourceType_Study = 1,       /*!< Study */
+    OrthancPluginResourceType_Series = 2,      /*!< Series */
+    OrthancPluginResourceType_Instance = 3,    /*!< Instance */
+    OrthancPluginResourceType_None = 4,        /*!< Unavailable resource type */
+
+    _OrthancPluginResourceType_INTERNAL = 0x7fffffff
+  } OrthancPluginResourceType;
+
+
+
+  /**
+   * The supported types of changes that can happen to DICOM resources.
+   * @ingroup Callbacks
+   **/
+  typedef enum
+  {
+    OrthancPluginChangeType_CompletedSeries = 0,    /*!< Series is now complete */
+    OrthancPluginChangeType_Deleted = 1,            /*!< Deleted resource */
+    OrthancPluginChangeType_NewChildInstance = 2,   /*!< A new instance was added to this resource */
+    OrthancPluginChangeType_NewInstance = 3,        /*!< New instance received */
+    OrthancPluginChangeType_NewPatient = 4,         /*!< New patient created */
+    OrthancPluginChangeType_NewSeries = 5,          /*!< New series created */
+    OrthancPluginChangeType_NewStudy = 6,           /*!< New study created */
+    OrthancPluginChangeType_StablePatient = 7,      /*!< Timeout: No new instance in this patient */
+    OrthancPluginChangeType_StableSeries = 8,       /*!< Timeout: No new instance in this series */
+    OrthancPluginChangeType_StableStudy = 9,        /*!< Timeout: No new instance in this study */
+    OrthancPluginChangeType_OrthancStarted = 10,    /*!< Orthanc has started */
+    OrthancPluginChangeType_OrthancStopped = 11,    /*!< Orthanc is stopping */
+    OrthancPluginChangeType_UpdatedAttachment = 12, /*!< Some user-defined attachment has changed for this resource */
+    OrthancPluginChangeType_UpdatedMetadata = 13,   /*!< Some user-defined metadata has changed for this resource */
+
+    _OrthancPluginChangeType_INTERNAL = 0x7fffffff
+  } OrthancPluginChangeType;
+
+
+  /**
+   * The compression algorithms that are supported by the Orthanc core.
+   * @ingroup Images
+   **/
+  typedef enum
+  {
+    OrthancPluginCompressionType_Zlib = 0,          /*!< Standard zlib compression */
+    OrthancPluginCompressionType_ZlibWithSize = 1,  /*!< zlib, prefixed with uncompressed size (uint64_t) */
+    OrthancPluginCompressionType_Gzip = 2,          /*!< Standard gzip compression */
+    OrthancPluginCompressionType_GzipWithSize = 3,  /*!< gzip, prefixed with uncompressed size (uint64_t) */
+
+    _OrthancPluginCompressionType_INTERNAL = 0x7fffffff
+  } OrthancPluginCompressionType;
+
+
+  /**
+   * The image formats that are supported by the Orthanc core.
+   * @ingroup Images
+   **/
+  typedef enum
+  {
+    OrthancPluginImageFormat_Png = 0,    /*!< Image compressed using PNG */
+    OrthancPluginImageFormat_Jpeg = 1,   /*!< Image compressed using JPEG */
+    OrthancPluginImageFormat_Dicom = 2,  /*!< Image compressed using DICOM */
+
+    _OrthancPluginImageFormat_INTERNAL = 0x7fffffff
+  } OrthancPluginImageFormat;
+
+
+  /**
+   * The value representations present in the DICOM standard (version 2013).
+   * @ingroup Toolbox
+   **/
+  typedef enum
+  {
+    OrthancPluginValueRepresentation_AE = 1,   /*!< Application Entity */
+    OrthancPluginValueRepresentation_AS = 2,   /*!< Age String */
+    OrthancPluginValueRepresentation_AT = 3,   /*!< Attribute Tag */
+    OrthancPluginValueRepresentation_CS = 4,   /*!< Code String */
+    OrthancPluginValueRepresentation_DA = 5,   /*!< Date */
+    OrthancPluginValueRepresentation_DS = 6,   /*!< Decimal String */
+    OrthancPluginValueRepresentation_DT = 7,   /*!< Date Time */
+    OrthancPluginValueRepresentation_FD = 8,   /*!< Floating Point Double */
+    OrthancPluginValueRepresentation_FL = 9,   /*!< Floating Point Single */
+    OrthancPluginValueRepresentation_IS = 10,  /*!< Integer String */
+    OrthancPluginValueRepresentation_LO = 11,  /*!< Long String */
+    OrthancPluginValueRepresentation_LT = 12,  /*!< Long Text */
+    OrthancPluginValueRepresentation_OB = 13,  /*!< Other Byte String */
+    OrthancPluginValueRepresentation_OF = 14,  /*!< Other Float String */
+    OrthancPluginValueRepresentation_OW = 15,  /*!< Other Word String */
+    OrthancPluginValueRepresentation_PN = 16,  /*!< Person Name */
+    OrthancPluginValueRepresentation_SH = 17,  /*!< Short String */
+    OrthancPluginValueRepresentation_SL = 18,  /*!< Signed Long */
+    OrthancPluginValueRepresentation_SQ = 19,  /*!< Sequence of Items */
+    OrthancPluginValueRepresentation_SS = 20,  /*!< Signed Short */
+    OrthancPluginValueRepresentation_ST = 21,  /*!< Short Text */
+    OrthancPluginValueRepresentation_TM = 22,  /*!< Time */
+    OrthancPluginValueRepresentation_UI = 23,  /*!< Unique Identifier (UID) */
+    OrthancPluginValueRepresentation_UL = 24,  /*!< Unsigned Long */
+    OrthancPluginValueRepresentation_UN = 25,  /*!< Unknown */
+    OrthancPluginValueRepresentation_US = 26,  /*!< Unsigned Short */
+    OrthancPluginValueRepresentation_UT = 27,  /*!< Unlimited Text */
+
+    _OrthancPluginValueRepresentation_INTERNAL = 0x7fffffff
+  } OrthancPluginValueRepresentation;
+
+
+  /**
+   * The possible output formats for a DICOM-to-JSON conversion.
+   * @ingroup Toolbox
+   * @see OrthancPluginDicomToJson()
+   **/
+  typedef enum
+  {
+    OrthancPluginDicomToJsonFormat_Full = 1,    /*!< Full output, with most details */
+    OrthancPluginDicomToJsonFormat_Short = 2,   /*!< Tags output as hexadecimal numbers */
+    OrthancPluginDicomToJsonFormat_Human = 3,   /*!< Human-readable JSON */
+
+    _OrthancPluginDicomToJsonFormat_INTERNAL = 0x7fffffff
+  } OrthancPluginDicomToJsonFormat;
+
+
+  /**
+   * Flags to customize a DICOM-to-JSON conversion. By default, binary
+   * tags are formatted using Data URI scheme.
+   * @ingroup Toolbox
+   **/
+  typedef enum
+  {
+    OrthancPluginDicomToJsonFlags_None                  = 0,
+    OrthancPluginDicomToJsonFlags_IncludeBinary         = (1 << 0),  /*!< Include the binary tags */
+    OrthancPluginDicomToJsonFlags_IncludePrivateTags    = (1 << 1),  /*!< Include the private tags */
+    OrthancPluginDicomToJsonFlags_IncludeUnknownTags    = (1 << 2),  /*!< Include the tags unknown by the dictionary */
+    OrthancPluginDicomToJsonFlags_IncludePixelData      = (1 << 3),  /*!< Include the pixel data */
+    OrthancPluginDicomToJsonFlags_ConvertBinaryToAscii  = (1 << 4),  /*!< Output binary tags as-is, dropping non-ASCII */
+    OrthancPluginDicomToJsonFlags_ConvertBinaryToNull   = (1 << 5),  /*!< Signal binary tags as null values */
+
+    _OrthancPluginDicomToJsonFlags_INTERNAL = 0x7fffffff
+  } OrthancPluginDicomToJsonFlags;
+
+
+  /**
+   * Flags to the creation of a DICOM file.
+   * @ingroup Toolbox
+   * @see OrthancPluginCreateDicom()
+   **/
+  typedef enum
+  {
+    OrthancPluginCreateDicomFlags_None                  = 0,
+    OrthancPluginCreateDicomFlags_DecodeDataUriScheme   = (1 << 0),  /*!< Decode fields encoded using data URI scheme */
+    OrthancPluginCreateDicomFlags_GenerateIdentifiers   = (1 << 1),  /*!< Automatically generate DICOM identifiers */
+
+    _OrthancPluginCreateDicomFlags_INTERNAL = 0x7fffffff
+  } OrthancPluginCreateDicomFlags;
+
+
+  /**
+   * The constraints on the DICOM identifiers that must be supported
+   * by the database plugins.
+   **/
+  typedef enum
+  {
+    OrthancPluginIdentifierConstraint_Equal = 1,           /*!< Equal */
+    OrthancPluginIdentifierConstraint_SmallerOrEqual = 2,  /*!< Less or equal */
+    OrthancPluginIdentifierConstraint_GreaterOrEqual = 3,  /*!< More or equal */
+    OrthancPluginIdentifierConstraint_Wildcard = 4,        /*!< Case-sensitive wildcard matching (with * and ?) */
+
+    _OrthancPluginIdentifierConstraint_INTERNAL = 0x7fffffff
+  } OrthancPluginIdentifierConstraint;
+
+
+  /**
+   * The origin of a DICOM instance that has been received by Orthanc.
+   **/
+  typedef enum
+  {
+    OrthancPluginInstanceOrigin_Unknown = 1,        /*!< Unknown origin */
+    OrthancPluginInstanceOrigin_DicomProtocol = 2,  /*!< Instance received through DICOM protocol */
+    OrthancPluginInstanceOrigin_RestApi = 3,        /*!< Instance received through REST API of Orthanc */
+    OrthancPluginInstanceOrigin_Plugin = 4,         /*!< Instance added to Orthanc by a plugin */
+    OrthancPluginInstanceOrigin_Lua = 5,            /*!< Instance added to Orthanc by a Lua script */
+
+    _OrthancPluginInstanceOrigin_INTERNAL = 0x7fffffff
+  } OrthancPluginInstanceOrigin;
+
+
+  /**
+   * @brief A memory buffer allocated by the core system of Orthanc.
+   *
+   * A memory buffer allocated by the core system of Orthanc. When the
+   * content of the buffer is not useful anymore, it must be free by a
+   * call to ::OrthancPluginFreeMemoryBuffer().
+   **/
+  typedef struct
+  {
+    /**
+     * @brief The content of the buffer.
+     **/
+    void*      data;
+
+    /**
+     * @brief The number of bytes in the buffer.
+     **/
+    uint32_t   size;
+  } OrthancPluginMemoryBuffer;
+
+
+
+
+  /**
+   * @brief Opaque structure that represents the HTTP connection to the client application.
+   * @ingroup Callback
+   **/
+  typedef struct _OrthancPluginRestOutput_t OrthancPluginRestOutput;
+
+
+
+  /**
+   * @brief Opaque structure that represents a DICOM instance received by Orthanc.
+   **/
+  typedef struct _OrthancPluginDicomInstance_t OrthancPluginDicomInstance;
+
+
+
+  /**
+   * @brief Opaque structure that represents an image that is uncompressed in memory.
+   * @ingroup Images
+   **/
+  typedef struct _OrthancPluginImage_t OrthancPluginImage;
+
+
+
+  /**
+   * @brief Opaque structure that represents the storage area that is actually used by Orthanc.
+   * @ingroup Images
+   **/
+  typedef struct _OrthancPluginStorageArea_t OrthancPluginStorageArea;
+
+
+
+  /**
+   * @brief Opaque structure to an object that represents a C-Find query for worklists.
+   * @ingroup DicomCallbacks
+   **/
+  typedef struct _OrthancPluginWorklistQuery_t OrthancPluginWorklistQuery;
+
+
+
+  /**
+   * @brief Opaque structure to an object that represents the answers to a C-Find query for worklists.
+   * @ingroup DicomCallbacks
+   **/
+  typedef struct _OrthancPluginWorklistAnswers_t OrthancPluginWorklistAnswers;
+
+
+
+  /**
+   * @brief Opaque structure to an object that represents a C-Find query.
+   * @ingroup DicomCallbacks
+   **/
+  typedef struct _OrthancPluginFindQuery_t OrthancPluginFindQuery;
+
+
+
+  /**
+   * @brief Opaque structure to an object that represents the answers to a C-Find query for worklists.
+   * @ingroup DicomCallbacks
+   **/
+  typedef struct _OrthancPluginFindAnswers_t OrthancPluginFindAnswers;
+
+
+
+  /**
+   * @brief Opaque structure to an object that can be used to check whether a DICOM instance matches a C-Find query.
+   * @ingroup Toolbox
+   **/
+  typedef struct _OrthancPluginFindAnswers_t OrthancPluginFindMatcher;
+
+
+
+  /**
+   * @brief Signature of a callback function that answers to a REST request.
+   * @ingroup Callbacks
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginRestCallback) (
+    OrthancPluginRestOutput* output,
+    const char* url,
+    const OrthancPluginHttpRequest* request);
+
+
+
+  /**
+   * @brief Signature of a callback function that is triggered when Orthanc receives a DICOM instance.
+   * @ingroup Callbacks
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginOnStoredInstanceCallback) (
+    OrthancPluginDicomInstance* instance,
+    const char* instanceId);
+
+
+
+  /**
+   * @brief Signature of a callback function that is triggered when a change happens to some DICOM resource.
+   * @ingroup Callbacks
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginOnChangeCallback) (
+    OrthancPluginChangeType changeType,
+    OrthancPluginResourceType resourceType,
+    const char* resourceId);
+
+
+
+  /**
+   * @brief Signature of a callback function to decode a DICOM instance as an image.
+   * @ingroup Callbacks
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginDecodeImageCallback) (
+    OrthancPluginImage** target,
+    const void* dicom,
+    const uint32_t size,
+    uint32_t frameIndex);
+
+
+
+  /**
+   * @brief Signature of a function to free dynamic memory.
+   **/
+  typedef void (*OrthancPluginFree) (void* buffer);
+
+
+
+  /**
+   * @brief Callback for writing to the storage area.
+   *
+   * Signature of a callback function that is triggered when Orthanc writes a file to the storage area.
+   *
+   * @param uuid The UUID of the file.
+   * @param content The content of the file.
+   * @param size The size of the file.
+   * @param type The content type corresponding to this file. 
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginStorageCreate) (
+    const char* uuid,
+    const void* content,
+    int64_t size,
+    OrthancPluginContentType type);
+
+
+
+  /**
+   * @brief Callback for reading from the storage area.
+   *
+   * Signature of a callback function that is triggered when Orthanc reads a file from the storage area.
+   *
+   * @param content The content of the file (output).
+   * @param size The size of the file (output).
+   * @param uuid The UUID of the file of interest.
+   * @param type The content type corresponding to this file. 
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginStorageRead) (
+    void** content,
+    int64_t* size,
+    const char* uuid,
+    OrthancPluginContentType type);
+
+
+
+  /**
+   * @brief Callback for removing a file from the storage area.
+   *
+   * Signature of a callback function that is triggered when Orthanc deletes a file from the storage area.
+   *
+   * @param uuid The UUID of the file to be removed.
+   * @param type The content type corresponding to this file. 
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginStorageRemove) (
+    const char* uuid,
+    OrthancPluginContentType type);
+
+
+
+  /**
+   * @brief Callback to handle the C-Find SCP requests for worklists.
+   *
+   * Signature of a callback function that is triggered when Orthanc
+   * receives a C-Find SCP request against modality worklists.
+   *
+   * @param answers The target structure where answers must be stored.
+   * @param query The worklist query.
+   * @param issuerAet The Application Entity Title (AET) of the modality from which the request originates.
+   * @param calledAet The Application Entity Title (AET) of the modality that is called by the request.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginWorklistCallback) (
+    OrthancPluginWorklistAnswers*     answers,
+    const OrthancPluginWorklistQuery* query,
+    const char*                       issuerAet,
+    const char*                       calledAet);
+
+
+
+  /**
+   * @brief Callback to filter incoming HTTP requests received by Orthanc.
+   *
+   * Signature of a callback function that is triggered whenever
+   * Orthanc receives an HTTP/REST request, and that answers whether
+   * this request should be allowed. If the callback returns "0"
+   * ("false"), the server answers with HTTP status code 403
+   * (Forbidden).
+   *
+   * @param method The HTTP method used by the request.
+   * @param uri The URI of interest.
+   * @param ip The IP address of the HTTP client.
+   * @param headersCount The number of HTTP headers.
+   * @param headersKeys The keys of the HTTP headers (always converted to low-case).
+   * @param headersValues The values of the HTTP headers.
+   * @return 0 if forbidden access, 1 if allowed access, -1 if error.
+   * @ingroup Callback
+   * @deprecated Please instead use OrthancPluginIncomingHttpRequestFilter2()
+   **/
+  typedef int32_t (*OrthancPluginIncomingHttpRequestFilter) (
+    OrthancPluginHttpMethod  method,
+    const char*              uri,
+    const char*              ip,
+    uint32_t                 headersCount,
+    const char* const*       headersKeys,
+    const char* const*       headersValues);
+
+
+
+  /**
+   * @brief Callback to filter incoming HTTP requests received by Orthanc.
+   *
+   * Signature of a callback function that is triggered whenever
+   * Orthanc receives an HTTP/REST request, and that answers whether
+   * this request should be allowed. If the callback returns "0"
+   * ("false"), the server answers with HTTP status code 403
+   * (Forbidden).
+   *
+   * @param method The HTTP method used by the request.
+   * @param uri The URI of interest.
+   * @param ip The IP address of the HTTP client.
+   * @param headersCount The number of HTTP headers.
+   * @param headersKeys The keys of the HTTP headers (always converted to low-case).
+   * @param headersValues The values of the HTTP headers.
+   * @param getArgumentsCount The number of GET arguments (only for the GET HTTP method).
+   * @param getArgumentsKeys The keys of the GET arguments (only for the GET HTTP method).
+   * @param getArgumentsValues The values of the GET arguments (only for the GET HTTP method).
+   * @return 0 if forbidden access, 1 if allowed access, -1 if error.
+   * @ingroup Callback
+   **/
+  typedef int32_t (*OrthancPluginIncomingHttpRequestFilter2) (
+    OrthancPluginHttpMethod  method,
+    const char*              uri,
+    const char*              ip,
+    uint32_t                 headersCount,
+    const char* const*       headersKeys,
+    const char* const*       headersValues,
+    uint32_t                 getArgumentsCount,
+    const char* const*       getArgumentsKeys,
+    const char* const*       getArgumentsValues);
+
+
+
+  /**
+   * @brief Callback to handle incoming C-Find SCP requests.
+   *
+   * Signature of a callback function that is triggered whenever
+   * Orthanc receives a C-Find SCP request not concerning modality
+   * worklists.
+   *
+   * @param answers The target structure where answers must be stored.
+   * @param query The worklist query.
+   * @param issuerAet The Application Entity Title (AET) of the modality from which the request originates.
+   * @param calledAet The Application Entity Title (AET) of the modality that is called by the request.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginFindCallback) (
+    OrthancPluginFindAnswers*     answers,
+    const OrthancPluginFindQuery* query,
+    const char*                   issuerAet,
+    const char*                   calledAet);
+
+
+
+  /**
+   * @brief Callback to handle incoming C-Move SCP requests.
+   *
+   * Signature of a callback function that is triggered whenever
+   * Orthanc receives a C-Move SCP request. The callback receives the
+   * type of the resource of interest (study, series, instance...)
+   * together with the DICOM tags containing its identifiers. In turn,
+   * the plugin must create a driver object that will be responsible
+   * for driving the successive move suboperations.
+   *
+   * @param resourceType The type of the resource of interest. Note
+   * that this might be set to ResourceType_None if the
+   * QueryRetrieveLevel (0008,0052) tag was not provided by the
+   * issuer (i.e. the originator modality).
+   * @param patientId Content of the PatientID (0x0010, 0x0020) tag of the resource of interest. Might be NULL.
+   * @param accessionNumber Content of the AccessionNumber (0x0008, 0x0050) tag. Might be NULL.
+   * @param studyInstanceUid Content of the StudyInstanceUID (0x0020, 0x000d) tag. Might be NULL.
+   * @param seriesInstanceUid Content of the SeriesInstanceUID (0x0020, 0x000e) tag. Might be NULL.
+   * @param sopInstanceUid Content of the SOPInstanceUID (0x0008, 0x0018) tag. Might be NULL.
+   * @param originatorAet The Application Entity Title (AET) of the
+   * modality from which the request originates.
+   * @param sourceAet The Application Entity Title (AET) of the
+   * modality that should send its DICOM files to another modality.
+   * @param targetAet The Application Entity Title (AET) of the
+   * modality that should receive the DICOM files.
+   * @param originatorId The Message ID issued by the originator modality,
+   * as found in tag (0000,0110) of the DICOM query emitted by the issuer.
+   *
+   * @return The NULL value if the plugin cannot deal with this query,
+   * or a pointer to the driver object that is responsible for
+   * handling the successive move suboperations.
+   * 
+   * @note If targetAet equals sourceAet, this is actually a query/retrieve operation.
+   * @ingroup DicomCallbacks
+   **/
+  typedef void* (*OrthancPluginMoveCallback) (
+    OrthancPluginResourceType  resourceType,
+    const char*                patientId,
+    const char*                accessionNumber,
+    const char*                studyInstanceUid,
+    const char*                seriesInstanceUid,
+    const char*                sopInstanceUid,
+    const char*                originatorAet,
+    const char*                sourceAet,
+    const char*                targetAet,
+    uint16_t                   originatorId);
+    
+
+  /**
+   * @brief Callback to read the size of a C-Move driver.
+   * 
+   * Signature of a callback function that returns the number of
+   * C-Move suboperations that are to be achieved by the given C-Move
+   * driver. This driver is the return value of a previous call to the
+   * OrthancPluginMoveCallback() callback.
+   *
+   * @param moveDriver The C-Move driver of interest.
+   * @return The number of suboperations. 
+   **/
+  typedef uint32_t (*OrthancPluginGetMoveSize) (void* moveDriver);
+
+
+  /**
+   * @brief Callback to apply one C-Move suboperation.
+   * 
+   * Signature of a callback function that applies the next C-Move
+   * suboperation that os to be achieved by the given C-Move
+   * driver. This driver is the return value of a previous call to the
+   * OrthancPluginMoveCallback() callback.
+   *
+   * @param moveDriver The C-Move driver of interest.
+   * @return 0 if success, or the error code if failure.
+   **/
+  typedef OrthancPluginErrorCode (*OrthancPluginApplyMove) (void* moveDriver);
+
+
+  /**
+   * @brief Callback to free one C-Move driver.
+   * 
+   * Signature of a callback function that releases the resources
+   * allocated by the given C-Move driver. This driver is the return
+   * value of a previous call to the OrthancPluginMoveCallback()
+   * callback.
+   *
+   * @param moveDriver The C-Move driver of interest.
+   **/
+  typedef void (*OrthancPluginFreeMove) (void* moveDriver);
+
+
+
+  /**
+   * @brief Data structure that contains information about the Orthanc core.
+   **/
+  typedef struct _OrthancPluginContext_t
+  {
+    void*                     pluginsManager;
+    const char*               orthancVersion;
+    OrthancPluginFree         Free;
+    OrthancPluginErrorCode  (*InvokeService) (struct _OrthancPluginContext_t* context,
+                                              _OrthancPluginService service,
+                                              const void* params);
+  } OrthancPluginContext;
+
+
+  
+  /**
+   * @brief An entry in the dictionary of DICOM tags.
+   **/
+  typedef struct
+  {
+    uint16_t                          group;            /*!< The group of the tag */
+    uint16_t                          element;          /*!< The element of the tag */
+    OrthancPluginValueRepresentation  vr;               /*!< The value representation of the tag */
+    uint32_t                          minMultiplicity;  /*!< The minimum multiplicity of the tag */
+    uint32_t                          maxMultiplicity;  /*!< The maximum multiplicity of the tag (0 means arbitrary) */
+  } OrthancPluginDictionaryEntry;
+
+
+
+  /**
+   * @brief Free a string.
+   * 
+   * Free a string that was allocated by the core system of Orthanc.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param str The string to be freed.
+   **/
+  ORTHANC_PLUGIN_INLINE void  OrthancPluginFreeString(
+    OrthancPluginContext* context, 
+    char* str)
+  {
+    if (str != NULL)
+    {
+      context->Free(str);
+    }
+  }
+
+
+  /**
+   * @brief Check the compatibility of the plugin wrt. the version of its hosting Orthanc.
+   * 
+   * This function checks whether the version of this C header is
+   * compatible with the current version of Orthanc. The result of
+   * this function should always be checked in the
+   * OrthancPluginInitialize() entry point of the plugin.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @return 1 if and only if the versions are compatible. If the
+   * result is 0, the initialization of the plugin should fail.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE int  OrthancPluginCheckVersion(
+    OrthancPluginContext* context)
+  {
+    int major, minor, revision;
+
+    if (sizeof(int32_t) != sizeof(OrthancPluginErrorCode) ||
+        sizeof(int32_t) != sizeof(OrthancPluginHttpMethod) ||
+        sizeof(int32_t) != sizeof(_OrthancPluginService) ||
+        sizeof(int32_t) != sizeof(_OrthancPluginProperty) ||
+        sizeof(int32_t) != sizeof(OrthancPluginPixelFormat) ||
+        sizeof(int32_t) != sizeof(OrthancPluginContentType) ||
+        sizeof(int32_t) != sizeof(OrthancPluginResourceType) ||
+        sizeof(int32_t) != sizeof(OrthancPluginChangeType) ||
+        sizeof(int32_t) != sizeof(OrthancPluginCompressionType) ||
+        sizeof(int32_t) != sizeof(OrthancPluginImageFormat) ||
+        sizeof(int32_t) != sizeof(OrthancPluginValueRepresentation) ||
+        sizeof(int32_t) != sizeof(OrthancPluginDicomToJsonFormat) ||
+        sizeof(int32_t) != sizeof(OrthancPluginDicomToJsonFlags) ||
+        sizeof(int32_t) != sizeof(OrthancPluginCreateDicomFlags) ||
+        sizeof(int32_t) != sizeof(OrthancPluginIdentifierConstraint) ||
+        sizeof(int32_t) != sizeof(OrthancPluginInstanceOrigin))
+    {
+      /* Mismatch in the size of the enumerations */
+      return 0;
+    }
+
+    /* Assume compatibility with the mainline */
+    if (!strcmp(context->orthancVersion, "mainline"))
+    {
+      return 1;
+    }
+
+    /* Parse the version of the Orthanc core */
+    if ( 
+#ifdef _MSC_VER
+      sscanf_s
+#else
+      sscanf
+#endif
+      (context->orthancVersion, "%4d.%4d.%4d", &major, &minor, &revision) != 3)
+    {
+      return 0;
+    }
+
+    /* Check the major number of the version */
+
+    if (major > ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER)
+    {
+      return 1;
+    }
+
+    if (major < ORTHANC_PLUGINS_MINIMAL_MAJOR_NUMBER)
+    {
+      return 0;
+    }
+
+    /* Check the minor number of the version */
+
+    if (minor > ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER)
+    {
+      return 1;
+    }
+
+    if (minor < ORTHANC_PLUGINS_MINIMAL_MINOR_NUMBER)
+    {
+      return 0;
+    }
+
+    /* Check the revision number of the version */
+
+    if (revision >= ORTHANC_PLUGINS_MINIMAL_REVISION_NUMBER)
+    {
+      return 1;
+    }
+    else
+    {
+      return 0;
+    }
+  }
+
+
+  /**
+   * @brief Free a memory buffer.
+   * 
+   * Free a memory buffer that was allocated by the core system of Orthanc.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param buffer The memory buffer to release.
+   **/
+  ORTHANC_PLUGIN_INLINE void  OrthancPluginFreeMemoryBuffer(
+    OrthancPluginContext* context, 
+    OrthancPluginMemoryBuffer* buffer)
+  {
+    context->Free(buffer->data);
+  }
+
+
+  /**
+   * @brief Log an error.
+   *
+   * Log an error message using the Orthanc logging system.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param message The message to be logged.
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginLogError(
+    OrthancPluginContext* context,
+    const char* message)
+  {
+    context->InvokeService(context, _OrthancPluginService_LogError, message);
+  }
+
+
+  /**
+   * @brief Log a warning.
+   *
+   * Log a warning message using the Orthanc logging system.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param message The message to be logged.
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginLogWarning(
+    OrthancPluginContext* context,
+    const char* message)
+  {
+    context->InvokeService(context, _OrthancPluginService_LogWarning, message);
+  }
+
+
+  /**
+   * @brief Log an information.
+   *
+   * Log an information message using the Orthanc logging system.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param message The message to be logged.
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginLogInfo(
+    OrthancPluginContext* context,
+    const char* message)
+  {
+    context->InvokeService(context, _OrthancPluginService_LogInfo, message);
+  }
+
+
+
+  typedef struct
+  {
+    const char* pathRegularExpression;
+    OrthancPluginRestCallback callback;
+  } _OrthancPluginRestCallback;
+
+  /**
+   * @brief Register a REST callback.
+   *
+   * This function registers a REST callback against a regular
+   * expression for a URI. This function must be called during the
+   * initialization of the plugin, i.e. inside the
+   * OrthancPluginInitialize() public function.
+   *
+   * Each REST callback is guaranteed to run in mutual exclusion.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param pathRegularExpression Regular expression for the URI. May contain groups.
+   * @param callback The callback function to handle the REST call.
+   * @see OrthancPluginRegisterRestCallbackNoLock()
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginRegisterRestCallback(
+    OrthancPluginContext*     context,
+    const char*               pathRegularExpression,
+    OrthancPluginRestCallback callback)
+  {
+    _OrthancPluginRestCallback params;
+    params.pathRegularExpression = pathRegularExpression;
+    params.callback = callback;
+    context->InvokeService(context, _OrthancPluginService_RegisterRestCallback, &params);
+  }
+
+
+
+  /**
+   * @brief Register a REST callback, without locking.
+   *
+   * This function registers a REST callback against a regular
+   * expression for a URI. This function must be called during the
+   * initialization of the plugin, i.e. inside the
+   * OrthancPluginInitialize() public function.
+   *
+   * Contrarily to OrthancPluginRegisterRestCallback(), the callback
+   * will NOT be invoked in mutual exclusion. This can be useful for
+   * high-performance plugins that must handle concurrent requests
+   * (Orthanc uses a pool of threads, one thread being assigned to
+   * each incoming HTTP request). Of course, it is up to the plugin to
+   * implement the required locking mechanisms.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param pathRegularExpression Regular expression for the URI. May contain groups.
+   * @param callback The callback function to handle the REST call.
+   * @see OrthancPluginRegisterRestCallback()
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginRegisterRestCallbackNoLock(
+    OrthancPluginContext*     context,
+    const char*               pathRegularExpression,
+    OrthancPluginRestCallback callback)
+  {
+    _OrthancPluginRestCallback params;
+    params.pathRegularExpression = pathRegularExpression;
+    params.callback = callback;
+    context->InvokeService(context, _OrthancPluginService_RegisterRestCallbackNoLock, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginOnStoredInstanceCallback callback;
+  } _OrthancPluginOnStoredInstanceCallback;
+
+  /**
+   * @brief Register a callback for received instances.
+   *
+   * This function registers a callback function that is called
+   * whenever a new DICOM instance is stored into the Orthanc core.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param callback The callback function.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginRegisterOnStoredInstanceCallback(
+    OrthancPluginContext*                  context,
+    OrthancPluginOnStoredInstanceCallback  callback)
+  {
+    _OrthancPluginOnStoredInstanceCallback params;
+    params.callback = callback;
+
+    context->InvokeService(context, _OrthancPluginService_RegisterOnStoredInstanceCallback, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginRestOutput* output;
+    const char*              answer;
+    uint32_t                 answerSize;
+    const char*              mimeType;
+  } _OrthancPluginAnswerBuffer;
+
+  /**
+   * @brief Answer to a REST request.
+   *
+   * This function answers to a REST request with the content of a memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param answer Pointer to the memory buffer containing the answer.
+   * @param answerSize Number of bytes of the answer.
+   * @param mimeType The MIME type of the answer.
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginAnswerBuffer(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    const char*              answer,
+    uint32_t                 answerSize,
+    const char*              mimeType)
+  {
+    _OrthancPluginAnswerBuffer params;
+    params.output = output;
+    params.answer = answer;
+    params.answerSize = answerSize;
+    params.mimeType = mimeType;
+    context->InvokeService(context, _OrthancPluginService_AnswerBuffer, &params);
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginRestOutput*  output;
+    OrthancPluginPixelFormat  format;
+    uint32_t                  width;
+    uint32_t                  height;
+    uint32_t                  pitch;
+    const void*               buffer;
+  } _OrthancPluginCompressAndAnswerPngImage;
+
+  typedef struct
+  {
+    OrthancPluginRestOutput*  output;
+    OrthancPluginImageFormat  imageFormat;
+    OrthancPluginPixelFormat  pixelFormat;
+    uint32_t                  width;
+    uint32_t                  height;
+    uint32_t                  pitch;
+    const void*               buffer;
+    uint8_t                   quality;
+  } _OrthancPluginCompressAndAnswerImage;
+
+
+  /**
+   * @brief Answer to a REST request with a PNG image.
+   *
+   * This function answers to a REST request with a PNG image. The
+   * parameters of this function describe a memory buffer that
+   * contains an uncompressed image. The image will be automatically compressed
+   * as a PNG image by the core system of Orthanc.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param format The memory layout of the uncompressed image.
+   * @param width The width of the image.
+   * @param height The height of the image.
+   * @param pitch The pitch of the image (i.e. the number of bytes
+   * between 2 successive lines of the image in the memory buffer).
+   * @param buffer The memory buffer containing the uncompressed image.
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginCompressAndAnswerPngImage(
+    OrthancPluginContext*     context,
+    OrthancPluginRestOutput*  output,
+    OrthancPluginPixelFormat  format,
+    uint32_t                  width,
+    uint32_t                  height,
+    uint32_t                  pitch,
+    const void*               buffer)
+  {
+    _OrthancPluginCompressAndAnswerImage params;
+    params.output = output;
+    params.imageFormat = OrthancPluginImageFormat_Png;
+    params.pixelFormat = format;
+    params.width = width;
+    params.height = height;
+    params.pitch = pitch;
+    params.buffer = buffer;
+    params.quality = 0;  /* No quality for PNG */
+    context->InvokeService(context, _OrthancPluginService_CompressAndAnswerImage, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*  target;
+    const char*                 instanceId;
+  } _OrthancPluginGetDicomForInstance;
+
+  /**
+   * @brief Retrieve a DICOM instance using its Orthanc identifier.
+   * 
+   * Retrieve a DICOM instance using its Orthanc identifier. The DICOM
+   * file is stored into a newly allocated memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param instanceId The Orthanc identifier of the DICOM instance of interest.
+   * @return 0 if success, or the error code if failure.
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginGetDicomForInstance(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 instanceId)
+  {
+    _OrthancPluginGetDicomForInstance params;
+    params.target = target;
+    params.instanceId = instanceId;
+    return context->InvokeService(context, _OrthancPluginService_GetDicomForInstance, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*  target;
+    const char*                 uri;
+  } _OrthancPluginRestApiGet;
+
+  /**
+   * @brief Make a GET call to the built-in Orthanc REST API.
+   * 
+   * Make a GET call to the built-in Orthanc REST API. The result to
+   * the query is stored into a newly allocated memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param uri The URI in the built-in Orthanc API.
+   * @return 0 if success, or the error code if failure.
+   * @note If the resource is not existing (error 404), the error code will be OrthancPluginErrorCode_UnknownResource.
+   * @see OrthancPluginRestApiGetAfterPlugins
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRestApiGet(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 uri)
+  {
+    _OrthancPluginRestApiGet params;
+    params.target = target;
+    params.uri = uri;
+    return context->InvokeService(context, _OrthancPluginService_RestApiGet, &params);
+  }
+
+
+
+  /**
+   * @brief Make a GET call to the REST API, as tainted by the plugins.
+   * 
+   * Make a GET call to the Orthanc REST API, after all the plugins
+   * are applied. In other words, if some plugin overrides or adds the
+   * called URI to the built-in Orthanc REST API, this call will
+   * return the result provided by this plugin. The result to the
+   * query is stored into a newly allocated memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param uri The URI in the built-in Orthanc API.
+   * @return 0 if success, or the error code if failure.
+   * @note If the resource is not existing (error 404), the error code will be OrthancPluginErrorCode_UnknownResource.
+   * @see OrthancPluginRestApiGet
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRestApiGetAfterPlugins(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 uri)
+  {
+    _OrthancPluginRestApiGet params;
+    params.target = target;
+    params.uri = uri;
+    return context->InvokeService(context, _OrthancPluginService_RestApiGetAfterPlugins, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*  target;
+    const char*                 uri;
+    const char*                 body;
+    uint32_t                    bodySize;
+  } _OrthancPluginRestApiPostPut;
+
+  /**
+   * @brief Make a POST call to the built-in Orthanc REST API.
+   * 
+   * Make a POST call to the built-in Orthanc REST API. The result to
+   * the query is stored into a newly allocated memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param uri The URI in the built-in Orthanc API.
+   * @param body The body of the POST request.
+   * @param bodySize The size of the body.
+   * @return 0 if success, or the error code if failure.
+   * @note If the resource is not existing (error 404), the error code will be OrthancPluginErrorCode_UnknownResource.
+   * @see OrthancPluginRestApiPostAfterPlugins
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRestApiPost(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 uri,
+    const char*                 body,
+    uint32_t                    bodySize)
+  {
+    _OrthancPluginRestApiPostPut params;
+    params.target = target;
+    params.uri = uri;
+    params.body = body;
+    params.bodySize = bodySize;
+    return context->InvokeService(context, _OrthancPluginService_RestApiPost, &params);
+  }
+
+
+  /**
+   * @brief Make a POST call to the REST API, as tainted by the plugins.
+   * 
+   * Make a POST call to the Orthanc REST API, after all the plugins
+   * are applied. In other words, if some plugin overrides or adds the
+   * called URI to the built-in Orthanc REST API, this call will
+   * return the result provided by this plugin. The result to the
+   * query is stored into a newly allocated memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param uri The URI in the built-in Orthanc API.
+   * @param body The body of the POST request.
+   * @param bodySize The size of the body.
+   * @return 0 if success, or the error code if failure.
+   * @note If the resource is not existing (error 404), the error code will be OrthancPluginErrorCode_UnknownResource.
+   * @see OrthancPluginRestApiPost
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRestApiPostAfterPlugins(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 uri,
+    const char*                 body,
+    uint32_t                    bodySize)
+  {
+    _OrthancPluginRestApiPostPut params;
+    params.target = target;
+    params.uri = uri;
+    params.body = body;
+    params.bodySize = bodySize;
+    return context->InvokeService(context, _OrthancPluginService_RestApiPostAfterPlugins, &params);
+  }
+
+
+
+  /**
+   * @brief Make a DELETE call to the built-in Orthanc REST API.
+   * 
+   * Make a DELETE call to the built-in Orthanc REST API.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param uri The URI to delete in the built-in Orthanc API.
+   * @return 0 if success, or the error code if failure.
+   * @note If the resource is not existing (error 404), the error code will be OrthancPluginErrorCode_UnknownResource.
+   * @see OrthancPluginRestApiDeleteAfterPlugins
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRestApiDelete(
+    OrthancPluginContext*       context,
+    const char*                 uri)
+  {
+    return context->InvokeService(context, _OrthancPluginService_RestApiDelete, uri);
+  }
+
+
+  /**
+   * @brief Make a DELETE call to the REST API, as tainted by the plugins.
+   * 
+   * Make a DELETE call to the Orthanc REST API, after all the plugins
+   * are applied. In other words, if some plugin overrides or adds the
+   * called URI to the built-in Orthanc REST API, this call will
+   * return the result provided by this plugin. 
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param uri The URI to delete in the built-in Orthanc API.
+   * @return 0 if success, or the error code if failure.
+   * @note If the resource is not existing (error 404), the error code will be OrthancPluginErrorCode_UnknownResource.
+   * @see OrthancPluginRestApiDelete
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRestApiDeleteAfterPlugins(
+    OrthancPluginContext*       context,
+    const char*                 uri)
+  {
+    return context->InvokeService(context, _OrthancPluginService_RestApiDeleteAfterPlugins, uri);
+  }
+
+
+
+  /**
+   * @brief Make a PUT call to the built-in Orthanc REST API.
+   * 
+   * Make a PUT call to the built-in Orthanc REST API. The result to
+   * the query is stored into a newly allocated memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param uri The URI in the built-in Orthanc API.
+   * @param body The body of the PUT request.
+   * @param bodySize The size of the body.
+   * @return 0 if success, or the error code if failure.
+   * @note If the resource is not existing (error 404), the error code will be OrthancPluginErrorCode_UnknownResource.
+   * @see OrthancPluginRestApiPutAfterPlugins
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRestApiPut(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 uri,
+    const char*                 body,
+    uint32_t                    bodySize)
+  {
+    _OrthancPluginRestApiPostPut params;
+    params.target = target;
+    params.uri = uri;
+    params.body = body;
+    params.bodySize = bodySize;
+    return context->InvokeService(context, _OrthancPluginService_RestApiPut, &params);
+  }
+
+
+
+  /**
+   * @brief Make a PUT call to the REST API, as tainted by the plugins.
+   * 
+   * Make a PUT call to the Orthanc REST API, after all the plugins
+   * are applied. In other words, if some plugin overrides or adds the
+   * called URI to the built-in Orthanc REST API, this call will
+   * return the result provided by this plugin. The result to the
+   * query is stored into a newly allocated memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param uri The URI in the built-in Orthanc API.
+   * @param body The body of the PUT request.
+   * @param bodySize The size of the body.
+   * @return 0 if success, or the error code if failure.
+   * @note If the resource is not existing (error 404), the error code will be OrthancPluginErrorCode_UnknownResource.
+   * @see OrthancPluginRestApiPut
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRestApiPutAfterPlugins(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 uri,
+    const char*                 body,
+    uint32_t                    bodySize)
+  {
+    _OrthancPluginRestApiPostPut params;
+    params.target = target;
+    params.uri = uri;
+    params.body = body;
+    params.bodySize = bodySize;
+    return context->InvokeService(context, _OrthancPluginService_RestApiPutAfterPlugins, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginRestOutput* output;
+    const char*              argument;
+  } _OrthancPluginOutputPlusArgument;
+
+  /**
+   * @brief Redirect a REST request.
+   *
+   * This function answers to a REST request by redirecting the user
+   * to another URI using HTTP status 301.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param redirection Where to redirect.
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginRedirect(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    const char*              redirection)
+  {
+    _OrthancPluginOutputPlusArgument params;
+    params.output = output;
+    params.argument = redirection;
+    context->InvokeService(context, _OrthancPluginService_Redirect, &params);
+  }
+
+
+
+  typedef struct
+  {
+    char**       result;
+    const char*  argument;
+  } _OrthancPluginRetrieveDynamicString;
+
+  /**
+   * @brief Look for a patient.
+   *
+   * Look for a patient stored in Orthanc, using its Patient ID tag (0x0010, 0x0020).
+   * This function uses the database index to run as fast as possible (it does not loop
+   * over all the stored patients).
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param patientID The Patient ID of interest.
+   * @return The NULL value if the patient is non-existent, or a string containing the 
+   * Orthanc ID of the patient. This string must be freed by OrthancPluginFreeString().
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginLookupPatient(
+    OrthancPluginContext*  context,
+    const char*            patientID)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = patientID;
+
+    if (context->InvokeService(context, _OrthancPluginService_LookupPatient, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Look for a study.
+   *
+   * Look for a study stored in Orthanc, using its Study Instance UID tag (0x0020, 0x000d).
+   * This function uses the database index to run as fast as possible (it does not loop
+   * over all the stored studies).
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param studyUID The Study Instance UID of interest.
+   * @return The NULL value if the study is non-existent, or a string containing the 
+   * Orthanc ID of the study. This string must be freed by OrthancPluginFreeString().
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginLookupStudy(
+    OrthancPluginContext*  context,
+    const char*            studyUID)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = studyUID;
+
+    if (context->InvokeService(context, _OrthancPluginService_LookupStudy, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Look for a study, using the accession number.
+   *
+   * Look for a study stored in Orthanc, using its Accession Number tag (0x0008, 0x0050).
+   * This function uses the database index to run as fast as possible (it does not loop
+   * over all the stored studies).
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param accessionNumber The Accession Number of interest.
+   * @return The NULL value if the study is non-existent, or a string containing the 
+   * Orthanc ID of the study. This string must be freed by OrthancPluginFreeString().
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginLookupStudyWithAccessionNumber(
+    OrthancPluginContext*  context,
+    const char*            accessionNumber)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = accessionNumber;
+
+    if (context->InvokeService(context, _OrthancPluginService_LookupStudyWithAccessionNumber, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Look for a series.
+   *
+   * Look for a series stored in Orthanc, using its Series Instance UID tag (0x0020, 0x000e).
+   * This function uses the database index to run as fast as possible (it does not loop
+   * over all the stored series).
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param seriesUID The Series Instance UID of interest.
+   * @return The NULL value if the series is non-existent, or a string containing the 
+   * Orthanc ID of the series. This string must be freed by OrthancPluginFreeString().
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginLookupSeries(
+    OrthancPluginContext*  context,
+    const char*            seriesUID)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = seriesUID;
+
+    if (context->InvokeService(context, _OrthancPluginService_LookupSeries, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Look for an instance.
+   *
+   * Look for an instance stored in Orthanc, using its SOP Instance UID tag (0x0008, 0x0018).
+   * This function uses the database index to run as fast as possible (it does not loop
+   * over all the stored instances).
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param sopInstanceUID The SOP Instance UID of interest.
+   * @return The NULL value if the instance is non-existent, or a string containing the 
+   * Orthanc ID of the instance. This string must be freed by OrthancPluginFreeString().
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginLookupInstance(
+    OrthancPluginContext*  context,
+    const char*            sopInstanceUID)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = sopInstanceUID;
+
+    if (context->InvokeService(context, _OrthancPluginService_LookupInstance, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginRestOutput* output;
+    uint16_t                 status;
+  } _OrthancPluginSendHttpStatusCode;
+
+  /**
+   * @brief Send a HTTP status code.
+   *
+   * This function answers to a REST request by sending a HTTP status
+   * code (such as "400 - Bad Request"). Note that:
+   * - Successful requests (status 200) must use ::OrthancPluginAnswerBuffer().
+   * - Redirections (status 301) must use ::OrthancPluginRedirect().
+   * - Unauthorized access (status 401) must use ::OrthancPluginSendUnauthorized().
+   * - Methods not allowed (status 405) must use ::OrthancPluginSendMethodNotAllowed().
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param status The HTTP status code to be sent.
+   * @ingroup REST
+   * @see OrthancPluginSendHttpStatus()
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginSendHttpStatusCode(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    uint16_t                 status)
+  {
+    _OrthancPluginSendHttpStatusCode params;
+    params.output = output;
+    params.status = status;
+    context->InvokeService(context, _OrthancPluginService_SendHttpStatusCode, &params);
+  }
+
+
+  /**
+   * @brief Signal that a REST request is not authorized.
+   *
+   * This function answers to a REST request by signaling that it is
+   * not authorized.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param realm The realm for the authorization process.
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginSendUnauthorized(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    const char*              realm)
+  {
+    _OrthancPluginOutputPlusArgument params;
+    params.output = output;
+    params.argument = realm;
+    context->InvokeService(context, _OrthancPluginService_SendUnauthorized, &params);
+  }
+
+
+  /**
+   * @brief Signal that this URI does not support this HTTP method.
+   *
+   * This function answers to a REST request by signaling that the
+   * queried URI does not support this method.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param allowedMethods The allowed methods for this URI (e.g. "GET,POST" after a PUT or a POST request).
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginSendMethodNotAllowed(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    const char*              allowedMethods)
+  {
+    _OrthancPluginOutputPlusArgument params;
+    params.output = output;
+    params.argument = allowedMethods;
+    context->InvokeService(context, _OrthancPluginService_SendMethodNotAllowed, &params);
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginRestOutput* output;
+    const char*              key;
+    const char*              value;
+  } _OrthancPluginSetHttpHeader;
+
+  /**
+   * @brief Set a cookie.
+   *
+   * This function sets a cookie in the HTTP client.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param cookie The cookie to be set.
+   * @param value The value of the cookie.
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginSetCookie(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    const char*              cookie,
+    const char*              value)
+  {
+    _OrthancPluginSetHttpHeader params;
+    params.output = output;
+    params.key = cookie;
+    params.value = value;
+    context->InvokeService(context, _OrthancPluginService_SetCookie, &params);
+  }
+
+
+  /**
+   * @brief Set some HTTP header.
+   *
+   * This function sets a HTTP header in the HTTP answer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param key The HTTP header to be set.
+   * @param value The value of the HTTP header.
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginSetHttpHeader(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    const char*              key,
+    const char*              value)
+  {
+    _OrthancPluginSetHttpHeader params;
+    params.output = output;
+    params.key = key;
+    params.value = value;
+    context->InvokeService(context, _OrthancPluginService_SetHttpHeader, &params);
+  }
+
+
+  typedef struct
+  {
+    char**                       resultStringToFree;
+    const char**                 resultString;
+    int64_t*                     resultInt64;
+    const char*                  key;
+    OrthancPluginDicomInstance*  instance;
+    OrthancPluginInstanceOrigin* resultOrigin;   /* New in Orthanc 0.9.5 SDK */
+  } _OrthancPluginAccessDicomInstance;
+
+
+  /**
+   * @brief Get the AET of a DICOM instance.
+   *
+   * This function returns the Application Entity Title (AET) of the
+   * DICOM modality from which a DICOM instance originates.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param instance The instance of interest.
+   * @return The AET if success, NULL if error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE const char* OrthancPluginGetInstanceRemoteAet(
+    OrthancPluginContext*        context,
+    OrthancPluginDicomInstance*  instance)
+  {
+    const char* result;
+
+    _OrthancPluginAccessDicomInstance params;
+    memset(&params, 0, sizeof(params));
+    params.resultString = &result;
+    params.instance = instance;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetInstanceRemoteAet, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Get the size of a DICOM file.
+   *
+   * This function returns the number of bytes of the given DICOM instance.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param instance The instance of interest.
+   * @return The size of the file, -1 in case of error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE int64_t OrthancPluginGetInstanceSize(
+    OrthancPluginContext*       context,
+    OrthancPluginDicomInstance* instance)
+  {
+    int64_t size;
+
+    _OrthancPluginAccessDicomInstance params;
+    memset(&params, 0, sizeof(params));
+    params.resultInt64 = &size;
+    params.instance = instance;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetInstanceSize, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return -1;
+    }
+    else
+    {
+      return size;
+    }
+  }
+
+
+  /**
+   * @brief Get the data of a DICOM file.
+   *
+   * This function returns a pointer to the content of the given DICOM instance.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param instance The instance of interest.
+   * @return The pointer to the DICOM data, NULL in case of error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE const char* OrthancPluginGetInstanceData(
+    OrthancPluginContext*        context,
+    OrthancPluginDicomInstance*  instance)
+  {
+    const char* result;
+
+    _OrthancPluginAccessDicomInstance params;
+    memset(&params, 0, sizeof(params));
+    params.resultString = &result;
+    params.instance = instance;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetInstanceData, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Get the DICOM tag hierarchy as a JSON file.
+   *
+   * This function returns a pointer to a newly created string
+   * containing a JSON file. This JSON file encodes the tag hierarchy
+   * of the given DICOM instance.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param instance The instance of interest.
+   * @return The NULL value in case of error, or a string containing the JSON file.
+   * This string must be freed by OrthancPluginFreeString().
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginGetInstanceJson(
+    OrthancPluginContext*        context,
+    OrthancPluginDicomInstance*  instance)
+  {
+    char* result;
+
+    _OrthancPluginAccessDicomInstance params;
+    memset(&params, 0, sizeof(params));
+    params.resultStringToFree = &result;
+    params.instance = instance;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetInstanceJson, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Get the DICOM tag hierarchy as a JSON file (with simplification).
+   *
+   * This function returns a pointer to a newly created string
+   * containing a JSON file. This JSON file encodes the tag hierarchy
+   * of the given DICOM instance. In contrast with
+   * ::OrthancPluginGetInstanceJson(), the returned JSON file is in
+   * its simplified version.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param instance The instance of interest.
+   * @return The NULL value in case of error, or a string containing the JSON file.
+   * This string must be freed by OrthancPluginFreeString().
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginGetInstanceSimplifiedJson(
+    OrthancPluginContext*        context,
+    OrthancPluginDicomInstance*  instance)
+  {
+    char* result;
+
+    _OrthancPluginAccessDicomInstance params;
+    memset(&params, 0, sizeof(params));
+    params.resultStringToFree = &result;
+    params.instance = instance;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetInstanceSimplifiedJson, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Check whether a DICOM instance is associated with some metadata.
+   *
+   * This function checks whether the DICOM instance of interest is
+   * associated with some metadata. As of Orthanc 0.8.1, in the
+   * callbacks registered by
+   * ::OrthancPluginRegisterOnStoredInstanceCallback(), the only
+   * possibly available metadata are "ReceptionDate", "RemoteAET" and
+   * "IndexInSeries".
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param instance The instance of interest.
+   * @param metadata The metadata of interest.
+   * @return 1 if the metadata is present, 0 if it is absent, -1 in case of error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE int  OrthancPluginHasInstanceMetadata(
+    OrthancPluginContext*        context,
+    OrthancPluginDicomInstance*  instance,
+    const char*                  metadata)
+  {
+    int64_t result;
+
+    _OrthancPluginAccessDicomInstance params;
+    memset(&params, 0, sizeof(params));
+    params.resultInt64 = &result;
+    params.instance = instance;
+    params.key = metadata;
+
+    if (context->InvokeService(context, _OrthancPluginService_HasInstanceMetadata, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return -1;
+    }
+    else
+    {
+      return (result != 0);
+    }
+  }
+
+
+  /**
+   * @brief Get the value of some metadata associated with a given DICOM instance.
+   *
+   * This functions returns the value of some metadata that is associated with the DICOM instance of interest.
+   * Before calling this function, the existence of the metadata must have been checked with
+   * ::OrthancPluginHasInstanceMetadata().
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param instance The instance of interest.
+   * @param metadata The metadata of interest.
+   * @return The metadata value if success, NULL if error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE const char* OrthancPluginGetInstanceMetadata(
+    OrthancPluginContext*        context,
+    OrthancPluginDicomInstance*  instance,
+    const char*                  metadata)
+  {
+    const char* result;
+
+    _OrthancPluginAccessDicomInstance params;
+    memset(&params, 0, sizeof(params));
+    params.resultString = &result;
+    params.instance = instance;
+    params.key = metadata;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetInstanceMetadata, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginStorageCreate  create;
+    OrthancPluginStorageRead    read;
+    OrthancPluginStorageRemove  remove;
+    OrthancPluginFree           free;
+  } _OrthancPluginRegisterStorageArea;
+
+  /**
+   * @brief Register a custom storage area.
+   *
+   * This function registers a custom storage area, to replace the
+   * built-in way Orthanc stores its files on the filesystem. This
+   * function must be called during the initialization of the plugin,
+   * i.e. inside the OrthancPluginInitialize() public function.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param create The callback function to store a file on the custom storage area.
+   * @param read The callback function to read a file from the custom storage area.
+   * @param remove The callback function to remove a file from the custom storage area.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginRegisterStorageArea(
+    OrthancPluginContext*       context,
+    OrthancPluginStorageCreate  create,
+    OrthancPluginStorageRead    read,
+    OrthancPluginStorageRemove  remove)
+  {
+    _OrthancPluginRegisterStorageArea params;
+    params.create = create;
+    params.read = read;
+    params.remove = remove;
+
+#ifdef  __cplusplus
+    params.free = ::free;
+#else
+    params.free = free;
+#endif
+
+    context->InvokeService(context, _OrthancPluginService_RegisterStorageArea, &params);
+  }
+
+
+
+  /**
+   * @brief Return the path to the Orthanc executable.
+   *
+   * This function returns the path to the Orthanc executable.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @return NULL in the case of an error, or a newly allocated string
+   * containing the path. This string must be freed by
+   * OrthancPluginFreeString().
+   **/
+  ORTHANC_PLUGIN_INLINE char *OrthancPluginGetOrthancPath(OrthancPluginContext* context)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = NULL;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetOrthancPath, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Return the directory containing the Orthanc.
+   *
+   * This function returns the path to the directory containing the Orthanc executable.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @return NULL in the case of an error, or a newly allocated string
+   * containing the path. This string must be freed by
+   * OrthancPluginFreeString().
+   **/
+  ORTHANC_PLUGIN_INLINE char *OrthancPluginGetOrthancDirectory(OrthancPluginContext* context)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = NULL;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetOrthancDirectory, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Return the path to the configuration file(s).
+   *
+   * This function returns the path to the configuration file(s) that
+   * was specified when starting Orthanc. Since version 0.9.1, this
+   * path can refer to a folder that stores a set of configuration
+   * files. This function is deprecated in favor of
+   * OrthancPluginGetConfiguration().
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @return NULL in the case of an error, or a newly allocated string
+   * containing the path. This string must be freed by
+   * OrthancPluginFreeString().
+   * @see OrthancPluginGetConfiguration()
+   **/
+  ORTHANC_PLUGIN_INLINE char *OrthancPluginGetConfigurationPath(OrthancPluginContext* context)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = NULL;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetConfigurationPath, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginOnChangeCallback callback;
+  } _OrthancPluginOnChangeCallback;
+
+  /**
+   * @brief Register a callback to monitor changes.
+   *
+   * This function registers a callback function that is called
+   * whenever a change happens to some DICOM resource.
+   *
+   * @warning If your change callback has to call the REST API of
+   * Orthanc, you should make these calls in a separate thread (with
+   * the events passing through a message queue). Otherwise, this
+   * could result in deadlocks in the presence of other plugins or Lua
+   * scripts.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param callback The callback function.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginRegisterOnChangeCallback(
+    OrthancPluginContext*          context,
+    OrthancPluginOnChangeCallback  callback)
+  {
+    _OrthancPluginOnChangeCallback params;
+    params.callback = callback;
+
+    context->InvokeService(context, _OrthancPluginService_RegisterOnChangeCallback, &params);
+  }
+
+
+
+  typedef struct
+  {
+    const char* plugin;
+    _OrthancPluginProperty property;
+    const char* value;
+  } _OrthancPluginSetPluginProperty;
+
+
+  /**
+   * @brief Set the URI where the plugin provides its Web interface.
+   *
+   * For plugins that come with a Web interface, this function
+   * declares the entry path where to find this interface. This
+   * information is notably used in the "Plugins" page of Orthanc
+   * Explorer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param uri The root URI for this plugin.
+   **/ 
+  ORTHANC_PLUGIN_INLINE void OrthancPluginSetRootUri(
+    OrthancPluginContext*  context,
+    const char*            uri)
+  {
+    _OrthancPluginSetPluginProperty params;
+    params.plugin = OrthancPluginGetName();
+    params.property = _OrthancPluginProperty_RootUri;
+    params.value = uri;
+
+    context->InvokeService(context, _OrthancPluginService_SetPluginProperty, &params);
+  }
+
+
+  /**
+   * @brief Set a description for this plugin.
+   *
+   * Set a description for this plugin. It is displayed in the
+   * "Plugins" page of Orthanc Explorer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param description The description.
+   **/ 
+  ORTHANC_PLUGIN_INLINE void OrthancPluginSetDescription(
+    OrthancPluginContext*  context,
+    const char*            description)
+  {
+    _OrthancPluginSetPluginProperty params;
+    params.plugin = OrthancPluginGetName();
+    params.property = _OrthancPluginProperty_Description;
+    params.value = description;
+
+    context->InvokeService(context, _OrthancPluginService_SetPluginProperty, &params);
+  }
+
+
+  /**
+   * @brief Extend the JavaScript code of Orthanc Explorer.
+   *
+   * Add JavaScript code to customize the default behavior of Orthanc
+   * Explorer. This can for instance be used to add new buttons.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param javascript The custom JavaScript code.
+   **/ 
+  ORTHANC_PLUGIN_INLINE void OrthancPluginExtendOrthancExplorer(
+    OrthancPluginContext*  context,
+    const char*            javascript)
+  {
+    _OrthancPluginSetPluginProperty params;
+    params.plugin = OrthancPluginGetName();
+    params.property = _OrthancPluginProperty_OrthancExplorer;
+    params.value = javascript;
+
+    context->InvokeService(context, _OrthancPluginService_SetPluginProperty, &params);
+  }
+
+
+  typedef struct
+  {
+    char**       result;
+    int32_t      property;
+    const char*  value;
+  } _OrthancPluginGlobalProperty;
+
+
+  /**
+   * @brief Get the value of a global property.
+   *
+   * Get the value of a global property that is stored in the Orthanc database. Global
+   * properties whose index is below 1024 are reserved by Orthanc.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param property The global property of interest.
+   * @param defaultValue The value to return, if the global property is unset.
+   * @return The value of the global property, or NULL in the case of an error. This
+   * string must be freed by OrthancPluginFreeString().
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginGetGlobalProperty(
+    OrthancPluginContext*  context,
+    int32_t                property,
+    const char*            defaultValue)
+  {
+    char* result;
+
+    _OrthancPluginGlobalProperty params;
+    params.result = &result;
+    params.property = property;
+    params.value = defaultValue;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetGlobalProperty, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Set the value of a global property.
+   *
+   * Set the value of a global property into the Orthanc
+   * database. Setting a global property can be used by plugins to
+   * save their internal parameters. Plugins are only allowed to set
+   * properties whose index are above or equal to 1024 (properties
+   * below 1024 are read-only and reserved by Orthanc).
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param property The global property of interest.
+   * @param value The value to be set in the global property.
+   * @return 0 if success, or the error code if failure.
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginSetGlobalProperty(
+    OrthancPluginContext*  context,
+    int32_t                property,
+    const char*            value)
+  {
+    _OrthancPluginGlobalProperty params;
+    params.result = NULL;
+    params.property = property;
+    params.value = value;
+
+    return context->InvokeService(context, _OrthancPluginService_SetGlobalProperty, &params);
+  }
+
+
+
+  typedef struct
+  {
+    int32_t   *resultInt32;
+    uint32_t  *resultUint32;
+    int64_t   *resultInt64;
+    uint64_t  *resultUint64;
+  } _OrthancPluginReturnSingleValue;
+
+  /**
+   * @brief Get the number of command-line arguments.
+   *
+   * Retrieve the number of command-line arguments that were used to launch Orthanc.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @return The number of arguments.
+   **/
+  ORTHANC_PLUGIN_INLINE uint32_t OrthancPluginGetCommandLineArgumentsCount(
+    OrthancPluginContext*  context)
+  {
+    uint32_t count = 0;
+
+    _OrthancPluginReturnSingleValue params;
+    memset(&params, 0, sizeof(params));
+    params.resultUint32 = &count;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetCommandLineArgumentsCount, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return 0;
+    }
+    else
+    {
+      return count;
+    }
+  }
+
+
+
+  /**
+   * @brief Get the value of a command-line argument.
+   *
+   * Get the value of one of the command-line arguments that were used
+   * to launch Orthanc. The number of available arguments can be
+   * retrieved by OrthancPluginGetCommandLineArgumentsCount().
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param argument The index of the argument.
+   * @return The value of the argument, or NULL in the case of an error. This
+   * string must be freed by OrthancPluginFreeString().
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginGetCommandLineArgument(
+    OrthancPluginContext*  context,
+    uint32_t               argument)
+  {
+    char* result;
+
+    _OrthancPluginGlobalProperty params;
+    params.result = &result;
+    params.property = (int32_t) argument;
+    params.value = NULL;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetCommandLineArgument, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Get the expected version of the database schema.
+   *
+   * Retrieve the expected version of the database schema.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @return The version.
+   * @ingroup Callbacks
+   * @deprecated Please instead use IDatabaseBackend::UpgradeDatabase()
+   **/
+  ORTHANC_PLUGIN_INLINE uint32_t OrthancPluginGetExpectedDatabaseVersion(
+    OrthancPluginContext*  context)
+  {
+    uint32_t count = 0;
+
+    _OrthancPluginReturnSingleValue params;
+    memset(&params, 0, sizeof(params));
+    params.resultUint32 = &count;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetExpectedDatabaseVersion, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return 0;
+    }
+    else
+    {
+      return count;
+    }
+  }
+
+
+
+  /**
+   * @brief Return the content of the configuration file(s).
+   *
+   * This function returns the content of the configuration that is
+   * used by Orthanc, formatted as a JSON string.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @return NULL in the case of an error, or a newly allocated string
+   * containing the configuration. This string must be freed by
+   * OrthancPluginFreeString().
+   **/
+  ORTHANC_PLUGIN_INLINE char *OrthancPluginGetConfiguration(OrthancPluginContext* context)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = NULL;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetConfiguration, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginRestOutput* output;
+    const char*              subType;
+    const char*              contentType;
+  } _OrthancPluginStartMultipartAnswer;
+
+  /**
+   * @brief Start an HTTP multipart answer.
+   *
+   * Initiates a HTTP multipart answer, as the result of a REST request.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param subType The sub-type of the multipart answer ("mixed" or "related").
+   * @param contentType The MIME type of the items in the multipart answer.
+   * @return 0 if success, or the error code if failure.
+   * @see OrthancPluginSendMultipartItem(), OrthancPluginSendMultipartItem2()
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginStartMultipartAnswer(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    const char*              subType,
+    const char*              contentType)
+  {
+    _OrthancPluginStartMultipartAnswer params;
+    params.output = output;
+    params.subType = subType;
+    params.contentType = contentType;
+    return context->InvokeService(context, _OrthancPluginService_StartMultipartAnswer, &params);
+  }
+
+
+  /**
+   * @brief Send an item as a part of some HTTP multipart answer.
+   *
+   * This function sends an item as a part of some HTTP multipart
+   * answer that was initiated by OrthancPluginStartMultipartAnswer().
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param answer Pointer to the memory buffer containing the item.
+   * @param answerSize Number of bytes of the item.
+   * @return 0 if success, or the error code if failure (this notably happens
+   * if the connection is closed by the client).
+   * @see OrthancPluginSendMultipartItem2()
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginSendMultipartItem(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    const char*              answer,
+    uint32_t                 answerSize)
+  {
+    _OrthancPluginAnswerBuffer params;
+    params.output = output;
+    params.answer = answer;
+    params.answerSize = answerSize;
+    params.mimeType = NULL;
+    return context->InvokeService(context, _OrthancPluginService_SendMultipartItem, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*    target;
+    const void*                   source;
+    uint32_t                      size;
+    OrthancPluginCompressionType  compression;
+    uint8_t                       uncompress;
+  } _OrthancPluginBufferCompression;
+
+
+  /**
+   * @brief Compress or decompress a buffer.
+   *
+   * This function compresses or decompresses a buffer, using the
+   * version of the zlib library that is used by the Orthanc core.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param source The source buffer.
+   * @param size The size in bytes of the source buffer.
+   * @param compression The compression algorithm.
+   * @param uncompress If set to "0", the buffer must be compressed. 
+   * If set to "1", the buffer must be uncompressed.
+   * @return 0 if success, or the error code if failure.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginBufferCompression(
+    OrthancPluginContext*         context,
+    OrthancPluginMemoryBuffer*    target,
+    const void*                   source,
+    uint32_t                      size,
+    OrthancPluginCompressionType  compression,
+    uint8_t                       uncompress)
+  {
+    _OrthancPluginBufferCompression params;
+    params.target = target;
+    params.source = source;
+    params.size = size;
+    params.compression = compression;
+    params.uncompress = uncompress;
+
+    return context->InvokeService(context, _OrthancPluginService_BufferCompression, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*  target;
+    const char*                 path;
+  } _OrthancPluginReadFile;
+
+  /**
+   * @brief Read a file.
+   * 
+   * Read the content of a file on the filesystem, and returns it into
+   * a newly allocated memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param path The path of the file to be read.
+   * @return 0 if success, or the error code if failure.
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginReadFile(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 path)
+  {
+    _OrthancPluginReadFile params;
+    params.target = target;
+    params.path = path;
+    return context->InvokeService(context, _OrthancPluginService_ReadFile, &params);
+  }
+
+
+
+  typedef struct
+  {
+    const char*  path;
+    const void*  data;
+    uint32_t     size;
+  } _OrthancPluginWriteFile;
+
+  /**
+   * @brief Write a file.
+   * 
+   * Write the content of a memory buffer to the filesystem.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param path The path of the file to be written.
+   * @param data The content of the memory buffer.
+   * @param size The size of the memory buffer.
+   * @return 0 if success, or the error code if failure.
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginWriteFile(
+    OrthancPluginContext*  context,
+    const char*            path,
+    const void*            data,
+    uint32_t               size)
+  {
+    _OrthancPluginWriteFile params;
+    params.path = path;
+    params.data = data;
+    params.size = size;
+    return context->InvokeService(context, _OrthancPluginService_WriteFile, &params);
+  }
+
+
+
+  typedef struct
+  {
+    const char**            target;
+    OrthancPluginErrorCode  error;
+  } _OrthancPluginGetErrorDescription;
+
+  /**
+   * @brief Get the description of a given error code.
+   *
+   * This function returns the description of a given error code.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param error The error code of interest.
+   * @return The error description. This is a statically-allocated
+   * string, do not free it.
+   **/
+  ORTHANC_PLUGIN_INLINE const char* OrthancPluginGetErrorDescription(
+    OrthancPluginContext*    context,
+    OrthancPluginErrorCode   error)
+  {
+    const char* result = NULL;
+
+    _OrthancPluginGetErrorDescription params;
+    params.target = &result;
+    params.error = error;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetErrorDescription, &params) != OrthancPluginErrorCode_Success ||
+        result == NULL)
+    {
+      return "Unknown error code";
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginRestOutput* output;
+    uint16_t                 status;
+    const char*              body;
+    uint32_t                 bodySize;
+  } _OrthancPluginSendHttpStatus;
+
+  /**
+   * @brief Send a HTTP status, with a custom body.
+   *
+   * This function answers to a HTTP request by sending a HTTP status
+   * code (such as "400 - Bad Request"), together with a body
+   * describing the error. The body will only be returned if the
+   * configuration option "HttpDescribeErrors" of Orthanc is set to "true".
+   * 
+   * Note that:
+   * - Successful requests (status 200) must use ::OrthancPluginAnswerBuffer().
+   * - Redirections (status 301) must use ::OrthancPluginRedirect().
+   * - Unauthorized access (status 401) must use ::OrthancPluginSendUnauthorized().
+   * - Methods not allowed (status 405) must use ::OrthancPluginSendMethodNotAllowed().
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param status The HTTP status code to be sent.
+   * @param body The body of the answer.
+   * @param bodySize The size of the body.
+   * @see OrthancPluginSendHttpStatusCode()
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginSendHttpStatus(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    uint16_t                 status,
+    const char*              body,
+    uint32_t                 bodySize)
+  {
+    _OrthancPluginSendHttpStatus params;
+    params.output = output;
+    params.status = status;
+    params.body = body;
+    params.bodySize = bodySize;
+    context->InvokeService(context, _OrthancPluginService_SendHttpStatus, &params);
+  }
+
+
+
+  typedef struct
+  {
+    const OrthancPluginImage*  image;
+    uint32_t*                  resultUint32;
+    OrthancPluginPixelFormat*  resultPixelFormat;
+    void**                     resultBuffer;
+  } _OrthancPluginGetImageInfo;
+
+
+  /**
+   * @brief Return the pixel format of an image.
+   *
+   * This function returns the type of memory layout for the pixels of the given image.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param image The image of interest.
+   * @return The pixel format.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginPixelFormat  OrthancPluginGetImagePixelFormat(
+    OrthancPluginContext*      context,
+    const OrthancPluginImage*  image)
+  {
+    OrthancPluginPixelFormat target;
+    
+    _OrthancPluginGetImageInfo params;
+    memset(&params, 0, sizeof(params));
+    params.image = image;
+    params.resultPixelFormat = &target;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetImagePixelFormat, &params) != OrthancPluginErrorCode_Success)
+    {
+      return OrthancPluginPixelFormat_Unknown;
+    }
+    else
+    {
+      return (OrthancPluginPixelFormat) target;
+    }
+  }
+
+
+
+  /**
+   * @brief Return the width of an image.
+   *
+   * This function returns the width of the given image.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param image The image of interest.
+   * @return The width.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE uint32_t  OrthancPluginGetImageWidth(
+    OrthancPluginContext*      context,
+    const OrthancPluginImage*  image)
+  {
+    uint32_t width;
+    
+    _OrthancPluginGetImageInfo params;
+    memset(&params, 0, sizeof(params));
+    params.image = image;
+    params.resultUint32 = &width;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetImageWidth, &params) != OrthancPluginErrorCode_Success)
+    {
+      return 0;
+    }
+    else
+    {
+      return width;
+    }
+  }
+
+
+
+  /**
+   * @brief Return the height of an image.
+   *
+   * This function returns the height of the given image.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param image The image of interest.
+   * @return The height.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE uint32_t  OrthancPluginGetImageHeight(
+    OrthancPluginContext*      context,
+    const OrthancPluginImage*  image)
+  {
+    uint32_t height;
+    
+    _OrthancPluginGetImageInfo params;
+    memset(&params, 0, sizeof(params));
+    params.image = image;
+    params.resultUint32 = &height;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetImageHeight, &params) != OrthancPluginErrorCode_Success)
+    {
+      return 0;
+    }
+    else
+    {
+      return height;
+    }
+  }
+
+
+
+  /**
+   * @brief Return the pitch of an image.
+   *
+   * This function returns the pitch of the given image. The pitch is
+   * defined as the number of bytes between 2 successive lines of the
+   * image in the memory buffer.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param image The image of interest.
+   * @return The pitch.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE uint32_t  OrthancPluginGetImagePitch(
+    OrthancPluginContext*      context,
+    const OrthancPluginImage*  image)
+  {
+    uint32_t pitch;
+    
+    _OrthancPluginGetImageInfo params;
+    memset(&params, 0, sizeof(params));
+    params.image = image;
+    params.resultUint32 = &pitch;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetImagePitch, &params) != OrthancPluginErrorCode_Success)
+    {
+      return 0;
+    }
+    else
+    {
+      return pitch;
+    }
+  }
+
+
+
+  /**
+   * @brief Return a pointer to the content of an image.
+   *
+   * This function returns a pointer to the memory buffer that
+   * contains the pixels of the image.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param image The image of interest.
+   * @return The pointer.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE void*  OrthancPluginGetImageBuffer(
+    OrthancPluginContext*      context,
+    const OrthancPluginImage*  image)
+  {
+    void* target = NULL;
+
+    _OrthancPluginGetImageInfo params;
+    memset(&params, 0, sizeof(params));
+    params.resultBuffer = &target;
+    params.image = image;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetImageBuffer, &params) != OrthancPluginErrorCode_Success)
+    {
+      return NULL;
+    }
+    else
+    {
+      return target;
+    }
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginImage**       target;
+    const void*                data;
+    uint32_t                   size;
+    OrthancPluginImageFormat   format;
+  } _OrthancPluginUncompressImage;
+
+
+  /**
+   * @brief Decode a compressed image.
+   *
+   * This function decodes a compressed image from a memory buffer.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param data Pointer to a memory buffer containing the compressed image.
+   * @param size Size of the memory buffer containing the compressed image.
+   * @param format The file format of the compressed image.
+   * @return The uncompressed image. It must be freed with OrthancPluginFreeImage().
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginImage *OrthancPluginUncompressImage(
+    OrthancPluginContext*      context,
+    const void*                data,
+    uint32_t                   size,
+    OrthancPluginImageFormat   format)
+  {
+    OrthancPluginImage* target = NULL;
+
+    _OrthancPluginUncompressImage params;
+    memset(&params, 0, sizeof(params));
+    params.target = &target;
+    params.data = data;
+    params.size = size;
+    params.format = format;
+
+    if (context->InvokeService(context, _OrthancPluginService_UncompressImage, &params) != OrthancPluginErrorCode_Success)
+    {
+      return NULL;
+    }
+    else
+    {
+      return target;
+    }
+  }
+
+
+
+
+  typedef struct
+  {
+    OrthancPluginImage*   image;
+  } _OrthancPluginFreeImage;
+
+  /**
+   * @brief Free an image.
+   *
+   * This function frees an image that was decoded with OrthancPluginUncompressImage().
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param image The image.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE void  OrthancPluginFreeImage(
+    OrthancPluginContext* context, 
+    OrthancPluginImage*   image)
+  {
+    _OrthancPluginFreeImage params;
+    params.image = image;
+
+    context->InvokeService(context, _OrthancPluginService_FreeImage, &params);
+  }
+
+
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer* target;
+    OrthancPluginImageFormat   imageFormat;
+    OrthancPluginPixelFormat   pixelFormat;
+    uint32_t                   width;
+    uint32_t                   height;
+    uint32_t                   pitch;
+    const void*                buffer;
+    uint8_t                    quality;
+  } _OrthancPluginCompressImage;
+
+
+  /**
+   * @brief Encode a PNG image.
+   *
+   * This function compresses the given memory buffer containing an
+   * image using the PNG specification, and stores the result of the
+   * compression into a newly allocated memory buffer.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param format The memory layout of the uncompressed image.
+   * @param width The width of the image.
+   * @param height The height of the image.
+   * @param pitch The pitch of the image (i.e. the number of bytes
+   * between 2 successive lines of the image in the memory buffer).
+   * @param buffer The memory buffer containing the uncompressed image.
+   * @return 0 if success, or the error code if failure.
+   * @see OrthancPluginCompressAndAnswerPngImage()
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginCompressPngImage(
+    OrthancPluginContext*         context,
+    OrthancPluginMemoryBuffer*    target,
+    OrthancPluginPixelFormat      format,
+    uint32_t                      width,
+    uint32_t                      height,
+    uint32_t                      pitch,
+    const void*                   buffer)
+  {
+    _OrthancPluginCompressImage params;
+    memset(&params, 0, sizeof(params));
+    params.target = target;
+    params.imageFormat = OrthancPluginImageFormat_Png;
+    params.pixelFormat = format;
+    params.width = width;
+    params.height = height;
+    params.pitch = pitch;
+    params.buffer = buffer;
+    params.quality = 0;  /* Unused for PNG */
+
+    return context->InvokeService(context, _OrthancPluginService_CompressImage, &params);
+  }
+
+
+  /**
+   * @brief Encode a JPEG image.
+   *
+   * This function compresses the given memory buffer containing an
+   * image using the JPEG specification, and stores the result of the
+   * compression into a newly allocated memory buffer.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param format The memory layout of the uncompressed image.
+   * @param width The width of the image.
+   * @param height The height of the image.
+   * @param pitch The pitch of the image (i.e. the number of bytes
+   * between 2 successive lines of the image in the memory buffer).
+   * @param buffer The memory buffer containing the uncompressed image.
+   * @param quality The quality of the JPEG encoding, between 1 (worst
+   * quality, best compression) and 100 (best quality, worst
+   * compression).
+   * @return 0 if success, or the error code if failure.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginCompressJpegImage(
+    OrthancPluginContext*         context,
+    OrthancPluginMemoryBuffer*    target,
+    OrthancPluginPixelFormat      format,
+    uint32_t                      width,
+    uint32_t                      height,
+    uint32_t                      pitch,
+    const void*                   buffer,
+    uint8_t                       quality)
+  {
+    _OrthancPluginCompressImage params;
+    memset(&params, 0, sizeof(params));
+    params.target = target;
+    params.imageFormat = OrthancPluginImageFormat_Jpeg;
+    params.pixelFormat = format;
+    params.width = width;
+    params.height = height;
+    params.pitch = pitch;
+    params.buffer = buffer;
+    params.quality = quality;
+
+    return context->InvokeService(context, _OrthancPluginService_CompressImage, &params);
+  }
+
+
+
+  /**
+   * @brief Answer to a REST request with a JPEG image.
+   *
+   * This function answers to a REST request with a JPEG image. The
+   * parameters of this function describe a memory buffer that
+   * contains an uncompressed image. The image will be automatically compressed
+   * as a JPEG image by the core system of Orthanc.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param format The memory layout of the uncompressed image.
+   * @param width The width of the image.
+   * @param height The height of the image.
+   * @param pitch The pitch of the image (i.e. the number of bytes
+   * between 2 successive lines of the image in the memory buffer).
+   * @param buffer The memory buffer containing the uncompressed image.
+   * @param quality The quality of the JPEG encoding, between 1 (worst
+   * quality, best compression) and 100 (best quality, worst
+   * compression).
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE void OrthancPluginCompressAndAnswerJpegImage(
+    OrthancPluginContext*     context,
+    OrthancPluginRestOutput*  output,
+    OrthancPluginPixelFormat  format,
+    uint32_t                  width,
+    uint32_t                  height,
+    uint32_t                  pitch,
+    const void*               buffer,
+    uint8_t                   quality)
+  {
+    _OrthancPluginCompressAndAnswerImage params;
+    params.output = output;
+    params.imageFormat = OrthancPluginImageFormat_Jpeg;
+    params.pixelFormat = format;
+    params.width = width;
+    params.height = height;
+    params.pitch = pitch;
+    params.buffer = buffer;
+    params.quality = quality;
+    context->InvokeService(context, _OrthancPluginService_CompressAndAnswerImage, &params);
+  }
+
+
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*  target;
+    OrthancPluginHttpMethod     method;
+    const char*                 url;
+    const char*                 username;
+    const char*                 password;
+    const char*                 body;
+    uint32_t                    bodySize;
+  } _OrthancPluginCallHttpClient;
+
+
+  /**
+   * @brief Issue a HTTP GET call.
+   * 
+   * Make a HTTP GET call to the given URL. The result to the query is
+   * stored into a newly allocated memory buffer. Favor
+   * OrthancPluginRestApiGet() if calling the built-in REST API of the
+   * Orthanc instance that hosts this plugin.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param url The URL of interest.
+   * @param username The username (can be <tt>NULL</tt> if no password protection).
+   * @param password The password (can be <tt>NULL</tt> if no password protection).
+   * @return 0 if success, or the error code if failure.
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginHttpGet(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 url,
+    const char*                 username,
+    const char*                 password)
+  {
+    _OrthancPluginCallHttpClient params;
+    memset(&params, 0, sizeof(params));
+
+    params.target = target;
+    params.method = OrthancPluginHttpMethod_Get;
+    params.url = url;
+    params.username = username;
+    params.password = password;
+
+    return context->InvokeService(context, _OrthancPluginService_CallHttpClient, &params);
+  }
+
+
+  /**
+   * @brief Issue a HTTP POST call.
+   * 
+   * Make a HTTP POST call to the given URL. The result to the query
+   * is stored into a newly allocated memory buffer. Favor
+   * OrthancPluginRestApiPost() if calling the built-in REST API of
+   * the Orthanc instance that hosts this plugin.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param url The URL of interest.
+   * @param body The content of the body of the request.
+   * @param bodySize The size of the body of the request.
+   * @param username The username (can be <tt>NULL</tt> if no password protection).
+   * @param password The password (can be <tt>NULL</tt> if no password protection).
+   * @return 0 if success, or the error code if failure.
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginHttpPost(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 url,
+    const char*                 body,
+    uint32_t                    bodySize,
+    const char*                 username,
+    const char*                 password)
+  {
+    _OrthancPluginCallHttpClient params;
+    memset(&params, 0, sizeof(params));
+
+    params.target = target;
+    params.method = OrthancPluginHttpMethod_Post;
+    params.url = url;
+    params.body = body;
+    params.bodySize = bodySize;
+    params.username = username;
+    params.password = password;
+
+    return context->InvokeService(context, _OrthancPluginService_CallHttpClient, &params);
+  }
+
+
+  /**
+   * @brief Issue a HTTP PUT call.
+   * 
+   * Make a HTTP PUT call to the given URL. The result to the query is
+   * stored into a newly allocated memory buffer. Favor
+   * OrthancPluginRestApiPut() if calling the built-in REST API of the
+   * Orthanc instance that hosts this plugin.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param url The URL of interest.
+   * @param body The content of the body of the request.
+   * @param bodySize The size of the body of the request.
+   * @param username The username (can be <tt>NULL</tt> if no password protection).
+   * @param password The password (can be <tt>NULL</tt> if no password protection).
+   * @return 0 if success, or the error code if failure.
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginHttpPut(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 url,
+    const char*                 body,
+    uint32_t                    bodySize,
+    const char*                 username,
+    const char*                 password)
+  {
+    _OrthancPluginCallHttpClient params;
+    memset(&params, 0, sizeof(params));
+
+    params.target = target;
+    params.method = OrthancPluginHttpMethod_Put;
+    params.url = url;
+    params.body = body;
+    params.bodySize = bodySize;
+    params.username = username;
+    params.password = password;
+
+    return context->InvokeService(context, _OrthancPluginService_CallHttpClient, &params);
+  }
+
+
+  /**
+   * @brief Issue a HTTP DELETE call.
+   * 
+   * Make a HTTP DELETE call to the given URL. Favor
+   * OrthancPluginRestApiDelete() if calling the built-in REST API of
+   * the Orthanc instance that hosts this plugin.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param url The URL of interest.
+   * @param username The username (can be <tt>NULL</tt> if no password protection).
+   * @param password The password (can be <tt>NULL</tt> if no password protection).
+   * @return 0 if success, or the error code if failure.
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginHttpDelete(
+    OrthancPluginContext*       context,
+    const char*                 url,
+    const char*                 username,
+    const char*                 password)
+  {
+    _OrthancPluginCallHttpClient params;
+    memset(&params, 0, sizeof(params));
+
+    params.method = OrthancPluginHttpMethod_Delete;
+    params.url = url;
+    params.username = username;
+    params.password = password;
+
+    return context->InvokeService(context, _OrthancPluginService_CallHttpClient, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginImage**       target;
+    const OrthancPluginImage*  source;
+    OrthancPluginPixelFormat   targetFormat;
+  } _OrthancPluginConvertPixelFormat;
+
+
+  /**
+   * @brief Change the pixel format of an image.
+   *
+   * This function creates a new image, changing the memory layout of the pixels.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param source The source image.
+   * @param targetFormat The target pixel format.
+   * @return The resulting image. It must be freed with OrthancPluginFreeImage().
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginImage *OrthancPluginConvertPixelFormat(
+    OrthancPluginContext*      context,
+    const OrthancPluginImage*  source,
+    OrthancPluginPixelFormat   targetFormat)
+  {
+    OrthancPluginImage* target = NULL;
+
+    _OrthancPluginConvertPixelFormat params;
+    params.target = &target;
+    params.source = source;
+    params.targetFormat = targetFormat;
+
+    if (context->InvokeService(context, _OrthancPluginService_ConvertPixelFormat, &params) != OrthancPluginErrorCode_Success)
+    {
+      return NULL;
+    }
+    else
+    {
+      return target;
+    }
+  }
+
+
+
+  /**
+   * @brief Return the number of available fonts.
+   *
+   * This function returns the number of fonts that are built in the
+   * Orthanc core. These fonts can be used to draw texts on images
+   * through OrthancPluginDrawText().
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @return The number of fonts.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE uint32_t OrthancPluginGetFontsCount(
+    OrthancPluginContext*  context)
+  {
+    uint32_t count = 0;
+
+    _OrthancPluginReturnSingleValue params;
+    memset(&params, 0, sizeof(params));
+    params.resultUint32 = &count;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetFontsCount, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return 0;
+    }
+    else
+    {
+      return count;
+    }
+  }
+
+
+
+
+  typedef struct
+  {
+    uint32_t      fontIndex; /* in */
+    const char**  name; /* out */
+    uint32_t*     size; /* out */
+  } _OrthancPluginGetFontInfo;
+
+  /**
+   * @brief Return the name of a font.
+   *
+   * This function returns the name of a font that is built in the Orthanc core.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param fontIndex The index of the font. This value must be less than OrthancPluginGetFontsCount().
+   * @return The font name. This is a statically-allocated string, do not free it.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE const char* OrthancPluginGetFontName(
+    OrthancPluginContext*  context,
+    uint32_t               fontIndex)
+  {
+    const char* result = NULL;
+
+    _OrthancPluginGetFontInfo params;
+    memset(&params, 0, sizeof(params));
+    params.name = &result;
+    params.fontIndex = fontIndex;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetFontInfo, &params) != OrthancPluginErrorCode_Success)
+    {
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Return the size of a font.
+   *
+   * This function returns the size of a font that is built in the Orthanc core.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param fontIndex The index of the font. This value must be less than OrthancPluginGetFontsCount().
+   * @return The font size.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE uint32_t OrthancPluginGetFontSize(
+    OrthancPluginContext*  context,
+    uint32_t               fontIndex)
+  {
+    uint32_t result;
+
+    _OrthancPluginGetFontInfo params;
+    memset(&params, 0, sizeof(params));
+    params.size = &result;
+    params.fontIndex = fontIndex;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetFontInfo, &params) != OrthancPluginErrorCode_Success)
+    {
+      return 0;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginImage*   image;
+    uint32_t              fontIndex;
+    const char*           utf8Text;
+    int32_t               x;
+    int32_t               y;
+    uint8_t               r;
+    uint8_t               g;
+    uint8_t               b;
+  } _OrthancPluginDrawText;
+
+
+  /**
+   * @brief Draw text on an image.
+   *
+   * This function draws some text on some image.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param image The image upon which to draw the text.
+   * @param fontIndex The index of the font. This value must be less than OrthancPluginGetFontsCount().
+   * @param utf8Text The text to be drawn, encoded as an UTF-8 zero-terminated string.
+   * @param x The X position of the text over the image.
+   * @param y The Y position of the text over the image.
+   * @param r The value of the red color channel of the text.
+   * @param g The value of the green color channel of the text.
+   * @param b The value of the blue color channel of the text.
+   * @return 0 if success, other value if error.
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginDrawText(
+    OrthancPluginContext*  context,
+    OrthancPluginImage*    image,
+    uint32_t               fontIndex,
+    const char*            utf8Text,
+    int32_t                x,
+    int32_t                y,
+    uint8_t                r,
+    uint8_t                g,
+    uint8_t                b)
+  {
+    _OrthancPluginDrawText params;
+    memset(&params, 0, sizeof(params));
+    params.image = image;
+    params.fontIndex = fontIndex;
+    params.utf8Text = utf8Text;
+    params.x = x;
+    params.y = y;
+    params.r = r;
+    params.g = g;
+    params.b = b;
+
+    return context->InvokeService(context, _OrthancPluginService_DrawText, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginStorageArea*   storageArea;
+    const char*                 uuid;
+    const void*                 content;
+    uint64_t                    size;
+    OrthancPluginContentType    type;
+  } _OrthancPluginStorageAreaCreate;
+
+
+  /**
+   * @brief Create a file inside the storage area.
+   *
+   * This function creates a new file inside the storage area that is
+   * currently used by Orthanc.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param storageArea The storage area.
+   * @param uuid The identifier of the file to be created.
+   * @param content The content to store in the newly created file.
+   * @param size The size of the content.
+   * @param type The type of the file content.
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginStorageAreaCreate(
+    OrthancPluginContext*       context,
+    OrthancPluginStorageArea*   storageArea,
+    const char*                 uuid,
+    const void*                 content,
+    uint64_t                    size,
+    OrthancPluginContentType    type)
+  {
+    _OrthancPluginStorageAreaCreate params;
+    params.storageArea = storageArea;
+    params.uuid = uuid;
+    params.content = content;
+    params.size = size;
+    params.type = type;
+
+    return context->InvokeService(context, _OrthancPluginService_StorageAreaCreate, &params);
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*  target;
+    OrthancPluginStorageArea*   storageArea;
+    const char*                 uuid;
+    OrthancPluginContentType    type;
+  } _OrthancPluginStorageAreaRead;
+
+
+  /**
+   * @brief Read a file from the storage area.
+   *
+   * This function reads the content of a given file from the storage
+   * area that is currently used by Orthanc.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param storageArea The storage area.
+   * @param uuid The identifier of the file to be read.
+   * @param type The type of the file content.
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginStorageAreaRead(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    OrthancPluginStorageArea*   storageArea,
+    const char*                 uuid,
+    OrthancPluginContentType    type)
+  {
+    _OrthancPluginStorageAreaRead params;
+    params.target = target;
+    params.storageArea = storageArea;
+    params.uuid = uuid;
+    params.type = type;
+
+    return context->InvokeService(context, _OrthancPluginService_StorageAreaRead, &params);
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginStorageArea*   storageArea;
+    const char*                 uuid;
+    OrthancPluginContentType    type;
+  } _OrthancPluginStorageAreaRemove;
+
+  /**
+   * @brief Remove a file from the storage area.
+   *
+   * This function removes a given file from the storage area that is
+   * currently used by Orthanc.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param storageArea The storage area.
+   * @param uuid The identifier of the file to be removed.
+   * @param type The type of the file content.
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginStorageAreaRemove(
+    OrthancPluginContext*       context,
+    OrthancPluginStorageArea*   storageArea,
+    const char*                 uuid,
+    OrthancPluginContentType    type)
+  {
+    _OrthancPluginStorageAreaRemove params;
+    params.storageArea = storageArea;
+    params.uuid = uuid;
+    params.type = type;
+
+    return context->InvokeService(context, _OrthancPluginService_StorageAreaRemove, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginErrorCode*  target;
+    int32_t                  code;
+    uint16_t                 httpStatus;
+    const char*              message;
+  } _OrthancPluginRegisterErrorCode;
+  
+  /**
+   * @brief Declare a custom error code for this plugin.
+   *
+   * This function declares a custom error code that can be generated
+   * by this plugin. This declaration is used to enrich the body of
+   * the HTTP answer in the case of an error, and to set the proper
+   * HTTP status code.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param code The error code that is internal to this plugin.
+   * @param httpStatus The HTTP status corresponding to this error.
+   * @param message The description of the error.
+   * @return The error code that has been assigned inside the Orthanc core.
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRegisterErrorCode(
+    OrthancPluginContext*    context,
+    int32_t                  code,
+    uint16_t                 httpStatus,
+    const char*              message)
+  {
+    OrthancPluginErrorCode target;
+
+    _OrthancPluginRegisterErrorCode params;
+    params.target = &target;
+    params.code = code;
+    params.httpStatus = httpStatus;
+    params.message = message;
+
+    if (context->InvokeService(context, _OrthancPluginService_RegisterErrorCode, &params) == OrthancPluginErrorCode_Success)
+    {
+      return target;
+    }
+    else
+    {
+      /* There was an error while assigned the error. Use a generic code. */
+      return OrthancPluginErrorCode_Plugin;
+    }
+  }
+
+
+
+  typedef struct
+  {
+    uint16_t                          group;
+    uint16_t                          element;
+    OrthancPluginValueRepresentation  vr;
+    const char*                       name;
+    uint32_t                          minMultiplicity;
+    uint32_t                          maxMultiplicity;
+  } _OrthancPluginRegisterDictionaryTag;
+  
+  /**
+   * @brief Register a new tag into the DICOM dictionary.
+   *
+   * This function declares a new public tag in the dictionary of
+   * DICOM tags that are known to Orthanc. This function should be
+   * used in the OrthancPluginInitialize() callback.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param group The group of the tag.
+   * @param element The element of the tag.
+   * @param vr The value representation of the tag.
+   * @param name The nickname of the tag.
+   * @param minMultiplicity The minimum multiplicity of the tag (must be above 0).
+   * @param maxMultiplicity The maximum multiplicity of the tag. A value of 0 means
+   * an arbitrary multiplicity ("<tt>n</tt>").
+   * @return 0 if success, other value if error.
+   * @see OrthancPluginRegisterPrivateDictionaryTag()
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRegisterDictionaryTag(
+    OrthancPluginContext*             context,
+    uint16_t                          group,
+    uint16_t                          element,
+    OrthancPluginValueRepresentation  vr,
+    const char*                       name,
+    uint32_t                          minMultiplicity,
+    uint32_t                          maxMultiplicity)
+  {
+    _OrthancPluginRegisterDictionaryTag params;
+    params.group = group;
+    params.element = element;
+    params.vr = vr;
+    params.name = name;
+    params.minMultiplicity = minMultiplicity;
+    params.maxMultiplicity = maxMultiplicity;
+
+    return context->InvokeService(context, _OrthancPluginService_RegisterDictionaryTag, &params);
+  }
+
+
+
+  typedef struct
+  {
+    uint16_t                          group;
+    uint16_t                          element;
+    OrthancPluginValueRepresentation  vr;
+    const char*                       name;
+    uint32_t                          minMultiplicity;
+    uint32_t                          maxMultiplicity;
+    const char*                       privateCreator;
+  } _OrthancPluginRegisterPrivateDictionaryTag;
+  
+  /**
+   * @brief Register a new private tag into the DICOM dictionary.
+   *
+   * This function declares a new private tag in the dictionary of
+   * DICOM tags that are known to Orthanc. This function should be
+   * used in the OrthancPluginInitialize() callback.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param group The group of the tag.
+   * @param element The element of the tag.
+   * @param vr The value representation of the tag.
+   * @param name The nickname of the tag.
+   * @param minMultiplicity The minimum multiplicity of the tag (must be above 0).
+   * @param maxMultiplicity The maximum multiplicity of the tag. A value of 0 means
+   * an arbitrary multiplicity ("<tt>n</tt>").
+   * @param privateCreator The private creator of this private tag.
+   * @return 0 if success, other value if error.
+   * @see OrthancPluginRegisterDictionaryTag()
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRegisterPrivateDictionaryTag(
+    OrthancPluginContext*             context,
+    uint16_t                          group,
+    uint16_t                          element,
+    OrthancPluginValueRepresentation  vr,
+    const char*                       name,
+    uint32_t                          minMultiplicity,
+    uint32_t                          maxMultiplicity,
+    const char*                       privateCreator)
+  {
+    _OrthancPluginRegisterPrivateDictionaryTag params;
+    params.group = group;
+    params.element = element;
+    params.vr = vr;
+    params.name = name;
+    params.minMultiplicity = minMultiplicity;
+    params.maxMultiplicity = maxMultiplicity;
+    params.privateCreator = privateCreator;
+
+    return context->InvokeService(context, _OrthancPluginService_RegisterPrivateDictionaryTag, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginStorageArea*  storageArea;
+    OrthancPluginResourceType  level;
+  } _OrthancPluginReconstructMainDicomTags;
+
+  /**
+   * @brief Reconstruct the main DICOM tags.
+   *
+   * This function requests the Orthanc core to reconstruct the main
+   * DICOM tags of all the resources of the given type. This function
+   * can only be used as a part of the upgrade of a custom database
+   * back-end
+   * (cf. OrthancPlugins::IDatabaseBackend::UpgradeDatabase). A
+   * database transaction will be automatically setup.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param storageArea The storage area.
+   * @param level The type of the resources of interest.
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginReconstructMainDicomTags(
+    OrthancPluginContext*      context,
+    OrthancPluginStorageArea*  storageArea,
+    OrthancPluginResourceType  level)
+  {
+    _OrthancPluginReconstructMainDicomTags params;
+    params.level = level;
+    params.storageArea = storageArea;
+
+    return context->InvokeService(context, _OrthancPluginService_ReconstructMainDicomTags, &params);
+  }
+
+
+  typedef struct
+  {
+    char**                          result;
+    const char*                     instanceId;
+    const void*                     buffer;
+    uint32_t                        size;
+    OrthancPluginDicomToJsonFormat  format;
+    OrthancPluginDicomToJsonFlags   flags;
+    uint32_t                        maxStringLength;
+  } _OrthancPluginDicomToJson;
+
+
+  /**
+   * @brief Format a DICOM memory buffer as a JSON string.
+   *
+   * This function takes as input a memory buffer containing a DICOM
+   * file, and outputs a JSON string representing the tags of this
+   * DICOM file.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param buffer The memory buffer containing the DICOM file.
+   * @param size The size of the memory buffer.
+   * @param format The output format.
+   * @param flags Flags governing the output.
+   * @param maxStringLength The maximum length of a field. Too long fields will
+   * be output as "null". The 0 value means no maximum length.
+   * @return The NULL value if the case of an error, or the JSON
+   * string. This string must be freed by OrthancPluginFreeString().
+   * @ingroup Toolbox
+   * @see OrthancPluginDicomInstanceToJson
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginDicomBufferToJson(
+    OrthancPluginContext*           context,
+    const void*                     buffer,
+    uint32_t                        size,
+    OrthancPluginDicomToJsonFormat  format,
+    OrthancPluginDicomToJsonFlags   flags, 
+    uint32_t                        maxStringLength)
+  {
+    char* result;
+
+    _OrthancPluginDicomToJson params;
+    memset(&params, 0, sizeof(params));
+    params.result = &result;
+    params.buffer = buffer;
+    params.size = size;
+    params.format = format;
+    params.flags = flags;
+    params.maxStringLength = maxStringLength;
+
+    if (context->InvokeService(context, _OrthancPluginService_DicomBufferToJson, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Format a DICOM instance as a JSON string.
+   *
+   * This function formats a DICOM instance that is stored in Orthanc,
+   * and outputs a JSON string representing the tags of this DICOM
+   * instance.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param instanceId The Orthanc identifier of the instance.
+   * @param format The output format.
+   * @param flags Flags governing the output.
+   * @param maxStringLength The maximum length of a field. Too long fields will
+   * be output as "null". The 0 value means no maximum length.
+   * @return The NULL value if the case of an error, or the JSON
+   * string. This string must be freed by OrthancPluginFreeString().
+   * @ingroup Toolbox
+   * @see OrthancPluginDicomInstanceToJson
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginDicomInstanceToJson(
+    OrthancPluginContext*           context,
+    const char*                     instanceId,
+    OrthancPluginDicomToJsonFormat  format,
+    OrthancPluginDicomToJsonFlags   flags, 
+    uint32_t                        maxStringLength)
+  {
+    char* result;
+
+    _OrthancPluginDicomToJson params;
+    memset(&params, 0, sizeof(params));
+    params.result = &result;
+    params.instanceId = instanceId;
+    params.format = format;
+    params.flags = flags;
+    params.maxStringLength = maxStringLength;
+
+    if (context->InvokeService(context, _OrthancPluginService_DicomInstanceToJson, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*  target;
+    const char*                 uri;
+    uint32_t                    headersCount;
+    const char* const*          headersKeys;
+    const char* const*          headersValues;
+    int32_t                     afterPlugins;
+  } _OrthancPluginRestApiGet2;
+
+  /**
+   * @brief Make a GET call to the Orthanc REST API, with custom HTTP headers.
+   * 
+   * Make a GET call to the Orthanc REST API with extended
+   * parameters. The result to the query is stored into a newly
+   * allocated memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param uri The URI in the built-in Orthanc API.
+   * @param headersCount The number of HTTP headers.
+   * @param headersKeys Array containing the keys of the HTTP headers (can be <tt>NULL</tt> if no header).
+   * @param headersValues Array containing the values of the HTTP headers (can be <tt>NULL</tt> if no header).
+   * @param afterPlugins If 0, the built-in API of Orthanc is used.
+   * If 1, the API is tainted by the plugins.
+   * @return 0 if success, or the error code if failure.
+   * @see OrthancPluginRestApiGet, OrthancPluginRestApiGetAfterPlugins
+   * @ingroup Orthanc
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginRestApiGet2(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  target,
+    const char*                 uri,
+    uint32_t                    headersCount,
+    const char* const*          headersKeys,
+    const char* const*          headersValues,
+    int32_t                     afterPlugins)
+  {
+    _OrthancPluginRestApiGet2 params;
+    params.target = target;
+    params.uri = uri;
+    params.headersCount = headersCount;
+    params.headersKeys = headersKeys;
+    params.headersValues = headersValues;
+    params.afterPlugins = afterPlugins;
+
+    return context->InvokeService(context, _OrthancPluginService_RestApiGet2, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginWorklistCallback callback;
+  } _OrthancPluginWorklistCallback;
+
+  /**
+   * @brief Register a callback to handle modality worklists requests.
+   *
+   * This function registers a callback to handle C-Find SCP requests
+   * on modality worklists.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param callback The callback.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginRegisterWorklistCallback(
+    OrthancPluginContext*          context,
+    OrthancPluginWorklistCallback  callback)
+  {
+    _OrthancPluginWorklistCallback params;
+    params.callback = callback;
+
+    return context->InvokeService(context, _OrthancPluginService_RegisterWorklistCallback, &params);
+  }
+
+
+  
+  typedef struct
+  {
+    OrthancPluginWorklistAnswers*      answers;
+    const OrthancPluginWorklistQuery*  query;
+    const void*                        dicom;
+    uint32_t                           size;
+  } _OrthancPluginWorklistAnswersOperation;
+
+  /**
+   * @brief Add one answer to some modality worklist request.
+   *
+   * This function adds one worklist (encoded as a DICOM file) to the
+   * set of answers corresponding to some C-Find SCP request against
+   * modality worklists.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param answers The set of answers.
+   * @param query The worklist query, as received by the callback.
+   * @param dicom The worklist to answer, encoded as a DICOM file.
+   * @param size The size of the DICOM file.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   * @see OrthancPluginCreateDicom()
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginWorklistAddAnswer(
+    OrthancPluginContext*             context,
+    OrthancPluginWorklistAnswers*     answers,
+    const OrthancPluginWorklistQuery* query,
+    const void*                       dicom,
+    uint32_t                          size)
+  {
+    _OrthancPluginWorklistAnswersOperation params;
+    params.answers = answers;
+    params.query = query;
+    params.dicom = dicom;
+    params.size = size;
+
+    return context->InvokeService(context, _OrthancPluginService_WorklistAddAnswer, &params);
+  }
+
+
+  /**
+   * @brief Mark the set of worklist answers as incomplete.
+   *
+   * This function marks as incomplete the set of answers
+   * corresponding to some C-Find SCP request against modality
+   * worklists. This must be used if canceling the handling of a
+   * request when too many answers are to be returned.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param answers The set of answers.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginWorklistMarkIncomplete(
+    OrthancPluginContext*          context,
+    OrthancPluginWorklistAnswers*  answers)
+  {
+    _OrthancPluginWorklistAnswersOperation params;
+    params.answers = answers;
+    params.query = NULL;
+    params.dicom = NULL;
+    params.size = 0;
+
+    return context->InvokeService(context, _OrthancPluginService_WorklistMarkIncomplete, &params);
+  }
+
+
+  typedef struct
+  {
+    const OrthancPluginWorklistQuery*  query;
+    const void*                        dicom;
+    uint32_t                           size;
+    int32_t*                           isMatch;
+    OrthancPluginMemoryBuffer*         target;
+  } _OrthancPluginWorklistQueryOperation;
+
+  /**
+   * @brief Test whether a worklist matches the query.
+   *
+   * This function checks whether one worklist (encoded as a DICOM
+   * file) matches the C-Find SCP query against modality
+   * worklists. This function must be called before adding the
+   * worklist as an answer through OrthancPluginWorklistAddAnswer().
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param query The worklist query, as received by the callback.
+   * @param dicom The worklist to answer, encoded as a DICOM file.
+   * @param size The size of the DICOM file.
+   * @return 1 if the worklist matches the query, 0 otherwise.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE int32_t  OrthancPluginWorklistIsMatch(
+    OrthancPluginContext*              context,
+    const OrthancPluginWorklistQuery*  query,
+    const void*                        dicom,
+    uint32_t                           size)
+  {
+    int32_t isMatch = 0;
+
+    _OrthancPluginWorklistQueryOperation params;
+    params.query = query;
+    params.dicom = dicom;
+    params.size = size;
+    params.isMatch = &isMatch;
+    params.target = NULL;
+
+    if (context->InvokeService(context, _OrthancPluginService_WorklistIsMatch, &params) == OrthancPluginErrorCode_Success)
+    {
+      return isMatch;
+    }
+    else
+    {
+      /* Error: Assume non-match */
+      return 0;
+    }
+  }
+
+
+  /**
+   * @brief Retrieve the worklist query as a DICOM file.
+   *
+   * This function retrieves the DICOM file that underlies a C-Find
+   * SCP query against modality worklists.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target Memory buffer where to store the DICOM file. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param query The worklist query, as received by the callback.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginWorklistGetDicomQuery(
+    OrthancPluginContext*              context,
+    OrthancPluginMemoryBuffer*         target,
+    const OrthancPluginWorklistQuery*  query)
+  {
+    _OrthancPluginWorklistQueryOperation params;
+    params.query = query;
+    params.dicom = NULL;
+    params.size = 0;
+    params.isMatch = NULL;
+    params.target = target;
+
+    return context->InvokeService(context, _OrthancPluginService_WorklistGetDicomQuery, &params);
+  }
+
+
+  /**
+   * @brief Get the origin of a DICOM file.
+   *
+   * This function returns the origin of a DICOM instance that has been received by Orthanc.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param instance The instance of interest.
+   * @return The origin of the instance.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginInstanceOrigin OrthancPluginGetInstanceOrigin(
+    OrthancPluginContext*       context,
+    OrthancPluginDicomInstance* instance)
+  {
+    OrthancPluginInstanceOrigin origin;
+
+    _OrthancPluginAccessDicomInstance params;
+    memset(&params, 0, sizeof(params));
+    params.resultOrigin = &origin;
+    params.instance = instance;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetInstanceOrigin, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return OrthancPluginInstanceOrigin_Unknown;
+    }
+    else
+    {
+      return origin;
+    }
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*     target;
+    const char*                    json;
+    const OrthancPluginImage*      pixelData;
+    OrthancPluginCreateDicomFlags  flags;
+  } _OrthancPluginCreateDicom;
+
+  /**
+   * @brief Create a DICOM instance from a JSON string and an image.
+   *
+   * This function takes as input a string containing a JSON file
+   * describing the content of a DICOM instance. As an output, it
+   * writes the corresponding DICOM instance to a newly allocated
+   * memory buffer. Additionally, an image to be encoded within the
+   * DICOM instance can also be provided.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target The target memory buffer. It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param json The input JSON file.
+   * @param pixelData The image. Can be NULL, if the pixel data is encoded inside the JSON with the data URI scheme.
+   * @param flags Flags governing the output.
+   * @return 0 if success, other value if error.
+   * @ingroup Toolbox
+   * @see OrthancPluginDicomBufferToJson
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginCreateDicom(
+    OrthancPluginContext*          context,
+    OrthancPluginMemoryBuffer*     target,
+    const char*                    json,
+    const OrthancPluginImage*      pixelData,
+    OrthancPluginCreateDicomFlags  flags)
+  {
+    _OrthancPluginCreateDicom params;
+    params.target = target;
+    params.json = json;
+    params.pixelData = pixelData;
+    params.flags = flags;
+
+    return context->InvokeService(context, _OrthancPluginService_CreateDicom, &params);
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginDecodeImageCallback callback;
+  } _OrthancPluginDecodeImageCallback;
+
+  /**
+   * @brief Register a callback to handle the decoding of DICOM images.
+   *
+   * This function registers a custom callback to the decoding of
+   * DICOM images, replacing the built-in decoder of Orthanc.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param callback The callback.
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginRegisterDecodeImageCallback(
+    OrthancPluginContext*             context,
+    OrthancPluginDecodeImageCallback  callback)
+  {
+    _OrthancPluginDecodeImageCallback params;
+    params.callback = callback;
+
+    return context->InvokeService(context, _OrthancPluginService_RegisterDecodeImageCallback, &params);
+  }
+  
+
+
+  typedef struct
+  {
+    OrthancPluginImage**       target;
+    OrthancPluginPixelFormat   format;
+    uint32_t                   width;
+    uint32_t                   height;
+    uint32_t                   pitch;
+    void*                      buffer;
+    const void*                constBuffer;
+    uint32_t                   bufferSize;
+    uint32_t                   frameIndex;
+  } _OrthancPluginCreateImage;
+
+
+  /**
+   * @brief Create an image.
+   *
+   * This function creates an image of given size and format.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param format The format of the pixels.
+   * @param width The width of the image.
+   * @param height The height of the image.
+   * @return The newly allocated image. It must be freed with OrthancPluginFreeImage().
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginImage* OrthancPluginCreateImage(
+    OrthancPluginContext*     context,
+    OrthancPluginPixelFormat  format,
+    uint32_t                  width,
+    uint32_t                  height)
+  {
+    OrthancPluginImage* target = NULL;
+
+    _OrthancPluginCreateImage params;
+    memset(&params, 0, sizeof(params));
+    params.target = &target;
+    params.format = format;
+    params.width = width;
+    params.height = height;
+
+    if (context->InvokeService(context, _OrthancPluginService_CreateImage, &params) != OrthancPluginErrorCode_Success)
+    {
+      return NULL;
+    }
+    else
+    {
+      return target;
+    }
+  }
+
+
+  /**
+   * @brief Create an image pointing to a memory buffer.
+   *
+   * This function creates an image whose content points to a memory
+   * buffer managed by the plugin. Note that the buffer is directly
+   * accessed, no memory is allocated and no data is copied.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param format The format of the pixels.
+   * @param width The width of the image.
+   * @param height The height of the image.
+   * @param pitch The pitch of the image (i.e. the number of bytes
+   * between 2 successive lines of the image in the memory buffer).
+   * @param buffer The memory buffer.
+   * @return The newly allocated image. It must be freed with OrthancPluginFreeImage().
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginImage* OrthancPluginCreateImageAccessor(
+    OrthancPluginContext*     context,
+    OrthancPluginPixelFormat  format,
+    uint32_t                  width,
+    uint32_t                  height,
+    uint32_t                  pitch,
+    void*                     buffer)
+  {
+    OrthancPluginImage* target = NULL;
+
+    _OrthancPluginCreateImage params;
+    memset(&params, 0, sizeof(params));
+    params.target = &target;
+    params.format = format;
+    params.width = width;
+    params.height = height;
+    params.pitch = pitch;
+    params.buffer = buffer;
+
+    if (context->InvokeService(context, _OrthancPluginService_CreateImageAccessor, &params) != OrthancPluginErrorCode_Success)
+    {
+      return NULL;
+    }
+    else
+    {
+      return target;
+    }
+  }
+
+
+
+  /**
+   * @brief Decode one frame from a DICOM instance.
+   *
+   * This function decodes one frame of a DICOM image that is stored
+   * in a memory buffer. This function will give the same result as
+   * OrthancPluginUncompressImage() for single-frame DICOM images.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param buffer Pointer to a memory buffer containing the DICOM image.
+   * @param bufferSize Size of the memory buffer containing the DICOM image.
+   * @param frameIndex The index of the frame of interest in a multi-frame image.
+   * @return The uncompressed image. It must be freed with OrthancPluginFreeImage().
+   * @ingroup Images
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginImage* OrthancPluginDecodeDicomImage(
+    OrthancPluginContext*  context,
+    const void*            buffer,
+    uint32_t               bufferSize,
+    uint32_t               frameIndex)
+  {
+    OrthancPluginImage* target = NULL;
+
+    _OrthancPluginCreateImage params;
+    memset(&params, 0, sizeof(params));
+    params.target = &target;
+    params.constBuffer = buffer;
+    params.bufferSize = bufferSize;
+    params.frameIndex = frameIndex;
+
+    if (context->InvokeService(context, _OrthancPluginService_DecodeDicomImage, &params) != OrthancPluginErrorCode_Success)
+    {
+      return NULL;
+    }
+    else
+    {
+      return target;
+    }
+  }
+
+
+
+  typedef struct
+  {
+    char**       result;
+    const void*  buffer;
+    uint32_t     size;
+  } _OrthancPluginComputeHash;
+
+  /**
+   * @brief Compute an MD5 hash.
+   *
+   * This functions computes the MD5 cryptographic hash of the given memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param buffer The source memory buffer.
+   * @param size The size in bytes of the source buffer.
+   * @return The NULL value in case of error, or a string containing the cryptographic hash.
+   * This string must be freed by OrthancPluginFreeString().
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginComputeMd5(
+    OrthancPluginContext*  context,
+    const void*            buffer,
+    uint32_t               size)
+  {
+    char* result;
+
+    _OrthancPluginComputeHash params;
+    params.result = &result;
+    params.buffer = buffer;
+    params.size = size;
+
+    if (context->InvokeService(context, _OrthancPluginService_ComputeMd5, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Compute a SHA-1 hash.
+   *
+   * This functions computes the SHA-1 cryptographic hash of the given memory buffer.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param buffer The source memory buffer.
+   * @param size The size in bytes of the source buffer.
+   * @return The NULL value in case of error, or a string containing the cryptographic hash.
+   * This string must be freed by OrthancPluginFreeString().
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginComputeSha1(
+    OrthancPluginContext*  context,
+    const void*            buffer,
+    uint32_t               size)
+  {
+    char* result;
+
+    _OrthancPluginComputeHash params;
+    params.result = &result;
+    params.buffer = buffer;
+    params.size = size;
+
+    if (context->InvokeService(context, _OrthancPluginService_ComputeSha1, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginDictionaryEntry* target;
+    const char*                   name;
+  } _OrthancPluginLookupDictionary;
+
+  /**
+   * @brief Get information about the given DICOM tag.
+   *
+   * This functions makes a lookup in the dictionary of DICOM tags
+   * that are known to Orthanc, and returns information about this
+   * tag. The tag can be specified using its human-readable name
+   * (e.g. "PatientName") or a set of two hexadecimal numbers
+   * (e.g. "0010-0020").
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param target Where to store the information about the tag.
+   * @param name The name of the DICOM tag.
+   * @return 0 if success, other value if error.
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginLookupDictionary(
+    OrthancPluginContext*          context,
+    OrthancPluginDictionaryEntry*  target,
+    const char*                    name)
+  {
+    _OrthancPluginLookupDictionary params;
+    params.target = target;
+    params.name = name;
+    return context->InvokeService(context, _OrthancPluginService_LookupDictionary, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginRestOutput* output;
+    const char*              answer;
+    uint32_t                 answerSize;
+    uint32_t                 headersCount;
+    const char* const*       headersKeys;
+    const char* const*       headersValues;
+  } _OrthancPluginSendMultipartItem2;
+
+  /**
+   * @brief Send an item as a part of some HTTP multipart answer, with custom headers.
+   *
+   * This function sends an item as a part of some HTTP multipart
+   * answer that was initiated by OrthancPluginStartMultipartAnswer(). In addition to
+   * OrthancPluginSendMultipartItem(), this function will set HTTP header associated
+   * with the item.
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param output The HTTP connection to the client application.
+   * @param answer Pointer to the memory buffer containing the item.
+   * @param answerSize Number of bytes of the item.
+   * @param headersCount The number of HTTP headers.
+   * @param headersKeys Array containing the keys of the HTTP headers.
+   * @param headersValues Array containing the values of the HTTP headers.
+   * @return 0 if success, or the error code if failure (this notably happens
+   * if the connection is closed by the client).
+   * @see OrthancPluginSendMultipartItem()
+   * @ingroup REST
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginSendMultipartItem2(
+    OrthancPluginContext*    context,
+    OrthancPluginRestOutput* output,
+    const char*              answer,
+    uint32_t                 answerSize,
+    uint32_t                 headersCount,
+    const char* const*       headersKeys,
+    const char* const*       headersValues)
+  {
+    _OrthancPluginSendMultipartItem2 params;
+    params.output = output;
+    params.answer = answer;
+    params.answerSize = answerSize;
+    params.headersCount = headersCount;
+    params.headersKeys = headersKeys;
+    params.headersValues = headersValues;    
+
+    return context->InvokeService(context, _OrthancPluginService_SendMultipartItem2, &params);
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginIncomingHttpRequestFilter callback;
+  } _OrthancPluginIncomingHttpRequestFilter;
+
+  /**
+   * @brief Register a callback to filter incoming HTTP requests.
+   *
+   * This function registers a custom callback to filter incoming HTTP/REST
+   * requests received by the HTTP server of Orthanc.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param callback The callback.
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   * @deprecated Please instead use OrthancPluginRegisterIncomingHttpRequestFilter2()
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginRegisterIncomingHttpRequestFilter(
+    OrthancPluginContext*                   context,
+    OrthancPluginIncomingHttpRequestFilter  callback)
+  {
+    _OrthancPluginIncomingHttpRequestFilter params;
+    params.callback = callback;
+
+    return context->InvokeService(context, _OrthancPluginService_RegisterIncomingHttpRequestFilter, &params);
+  }
+  
+
+
+  typedef struct
+  {
+    OrthancPluginMemoryBuffer*  answerBody;
+    OrthancPluginMemoryBuffer*  answerHeaders;
+    uint16_t*                   httpStatus;
+    OrthancPluginHttpMethod     method;
+    const char*                 url;
+    uint32_t                    headersCount;
+    const char* const*          headersKeys;
+    const char* const*          headersValues;
+    const char*                 body;
+    uint32_t                    bodySize;
+    const char*                 username;
+    const char*                 password;
+    uint32_t                    timeout;
+    const char*                 certificateFile;
+    const char*                 certificateKeyFile;
+    const char*                 certificateKeyPassword;
+    uint8_t                     pkcs11;
+  } _OrthancPluginCallHttpClient2;
+
+
+
+  /**
+   * @brief Issue a HTTP call with full flexibility.
+   * 
+   * Make a HTTP call to the given URL. The result to the query is
+   * stored into a newly allocated memory buffer. The HTTP request
+   * will be done accordingly to the global configuration of Orthanc
+   * (in particular, the options "HttpProxy", "HttpTimeout",
+   * "HttpsVerifyPeers", "HttpsCACertificates", and "Pkcs11" will be
+   * taken into account).
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param answerBody The target memory buffer (out argument).
+   *        It must be freed with OrthancPluginFreeMemoryBuffer().
+   * @param answerHeaders The target memory buffer for the HTTP headers in the answers (out argument). 
+   *        The answer headers are formatted as a JSON object (associative array).
+   *        The buffer must be freed with OrthancPluginFreeMemoryBuffer().
+   *        This argument can be set to NULL if the plugin has no interest in the HTTP headers.
+   * @param httpStatus The HTTP status after the execution of the request (out argument).
+   * @param method HTTP method to be used.
+   * @param url The URL of interest.
+   * @param headersCount The number of HTTP headers.
+   * @param headersKeys Array containing the keys of the HTTP headers (can be <tt>NULL</tt> if no header).
+   * @param headersValues Array containing the values of the HTTP headers (can be <tt>NULL</tt> if no header).
+   * @param username The username (can be <tt>NULL</tt> if no password protection).
+   * @param password The password (can be <tt>NULL</tt> if no password protection).
+   * @param body The body of the POST request.
+   * @param bodySize The size of the body.
+   * @param timeout Timeout in seconds (0 for default timeout).
+   * @param certificateFile Path to the client certificate for HTTPS, in PEM format
+   * (can be <tt>NULL</tt> if no client certificate or if not using HTTPS).
+   * @param certificateKeyFile Path to the key of the client certificate for HTTPS, in PEM format
+   * (can be <tt>NULL</tt> if no client certificate or if not using HTTPS).
+   * @param certificateKeyPassword Password to unlock the key of the client certificate 
+   * (can be <tt>NULL</tt> if no client certificate or if not using HTTPS).
+   * @param pkcs11 Enable PKCS#11 client authentication for hardware security modules and smart cards.
+   * @return 0 if success, or the error code if failure.
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginHttpClient(
+    OrthancPluginContext*       context,
+    OrthancPluginMemoryBuffer*  answerBody,
+    OrthancPluginMemoryBuffer*  answerHeaders,
+    uint16_t*                   httpStatus,
+    OrthancPluginHttpMethod     method,
+    const char*                 url,
+    uint32_t                    headersCount,
+    const char* const*          headersKeys,
+    const char* const*          headersValues,
+    const char*                 body,
+    uint32_t                    bodySize,
+    const char*                 username,
+    const char*                 password,
+    uint32_t                    timeout,
+    const char*                 certificateFile,
+    const char*                 certificateKeyFile,
+    const char*                 certificateKeyPassword,
+    uint8_t                     pkcs11)
+  {
+    _OrthancPluginCallHttpClient2 params;
+    memset(&params, 0, sizeof(params));
+
+    params.answerBody = answerBody;
+    params.answerHeaders = answerHeaders;
+    params.httpStatus = httpStatus;
+    params.method = method;
+    params.url = url;
+    params.headersCount = headersCount;
+    params.headersKeys = headersKeys;
+    params.headersValues = headersValues;
+    params.body = body;
+    params.bodySize = bodySize;
+    params.username = username;
+    params.password = password;
+    params.timeout = timeout;
+    params.certificateFile = certificateFile;
+    params.certificateKeyFile = certificateKeyFile;
+    params.certificateKeyPassword = certificateKeyPassword;
+    params.pkcs11 = pkcs11;
+
+    return context->InvokeService(context, _OrthancPluginService_CallHttpClient2, &params);
+  }
+
+
+  /**
+   * @brief Generate an UUID.
+   *
+   * Generate a random GUID/UUID (globally unique identifier).
+   * 
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @return NULL in the case of an error, or a newly allocated string
+   * containing the UUID. This string must be freed by OrthancPluginFreeString().
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE char* OrthancPluginGenerateUuid(
+    OrthancPluginContext*  context)
+  {
+    char* result;
+
+    _OrthancPluginRetrieveDynamicString params;
+    params.result = &result;
+    params.argument = NULL;
+
+    if (context->InvokeService(context, _OrthancPluginService_GenerateUuid, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+
+
+  typedef struct
+  {
+    OrthancPluginFindCallback callback;
+  } _OrthancPluginFindCallback;
+
+  /**
+   * @brief Register a callback to handle C-Find requests.
+   *
+   * This function registers a callback to handle C-Find SCP requests
+   * that are not related to modality worklists.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param callback The callback.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginRegisterFindCallback(
+    OrthancPluginContext*      context,
+    OrthancPluginFindCallback  callback)
+  {
+    _OrthancPluginFindCallback params;
+    params.callback = callback;
+
+    return context->InvokeService(context, _OrthancPluginService_RegisterFindCallback, &params);
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginFindAnswers      *answers;
+    const OrthancPluginFindQuery  *query;
+    const void                    *dicom;
+    uint32_t                       size;
+    uint32_t                       index;
+    uint32_t                      *resultUint32;
+    uint16_t                      *resultGroup;
+    uint16_t                      *resultElement;
+    char                         **resultString;
+  } _OrthancPluginFindOperation;
+
+  /**
+   * @brief Add one answer to some C-Find request.
+   *
+   * This function adds one answer (encoded as a DICOM file) to the
+   * set of answers corresponding to some C-Find SCP request that is
+   * not related to modality worklists.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param answers The set of answers.
+   * @param dicom The answer to be added, encoded as a DICOM file.
+   * @param size The size of the DICOM file.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   * @see OrthancPluginCreateDicom()
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginFindAddAnswer(
+    OrthancPluginContext*      context,
+    OrthancPluginFindAnswers*  answers,
+    const void*                dicom,
+    uint32_t                   size)
+  {
+    _OrthancPluginFindOperation params;
+    memset(&params, 0, sizeof(params));
+    params.answers = answers;
+    params.dicom = dicom;
+    params.size = size;
+
+    return context->InvokeService(context, _OrthancPluginService_FindAddAnswer, &params);
+  }
+
+
+  /**
+   * @brief Mark the set of C-Find answers as incomplete.
+   *
+   * This function marks as incomplete the set of answers
+   * corresponding to some C-Find SCP request that is not related to
+   * modality worklists. This must be used if canceling the handling
+   * of a request when too many answers are to be returned.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param answers The set of answers.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginFindMarkIncomplete(
+    OrthancPluginContext*      context,
+    OrthancPluginFindAnswers*  answers)
+  {
+    _OrthancPluginFindOperation params;
+    memset(&params, 0, sizeof(params));
+    params.answers = answers;
+
+    return context->InvokeService(context, _OrthancPluginService_FindMarkIncomplete, &params);
+  }
+
+
+
+  /**
+   * @brief Get the number of tags in a C-Find query.
+   *
+   * This function returns the number of tags that are contained in
+   * the given C-Find query.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param query The C-Find query.
+   * @return The number of tags.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE uint32_t  OrthancPluginGetFindQuerySize(
+    OrthancPluginContext*          context,
+    const OrthancPluginFindQuery*  query)
+  {
+    uint32_t count = 0;
+
+    _OrthancPluginFindOperation params;
+    memset(&params, 0, sizeof(params));
+    params.query = query;
+    params.resultUint32 = &count;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetFindQuerySize, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return 0;
+    }
+    else
+    {
+      return count;
+    }
+  }
+
+
+  /**
+   * @brief Get one tag in a C-Find query.
+   *
+   * This function returns the group and the element of one DICOM tag
+   * in the given C-Find query.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param group The group of the tag (output).
+   * @param element The element of the tag (output).
+   * @param query The C-Find query.
+   * @param index The index of the tag of interest.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode  OrthancPluginGetFindQueryTag(
+    OrthancPluginContext*          context,
+    uint16_t*                      group,
+    uint16_t*                      element,
+    const OrthancPluginFindQuery*  query,
+    uint32_t                       index)
+  {
+    _OrthancPluginFindOperation params;
+    memset(&params, 0, sizeof(params));
+    params.query = query;
+    params.index = index;
+    params.resultGroup = group;
+    params.resultElement = element;
+
+    return context->InvokeService(context, _OrthancPluginService_GetFindQueryTag, &params);
+  }
+
+
+  /**
+   * @brief Get the symbolic name of one tag in a C-Find query.
+   *
+   * This function returns the symbolic name of one DICOM tag in the
+   * given C-Find query.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param query The C-Find query.
+   * @param index The index of the tag of interest.
+   * @return The NULL value in case of error, or a string containing the name of the tag.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE char*  OrthancPluginGetFindQueryTagName(
+    OrthancPluginContext*          context,
+    const OrthancPluginFindQuery*  query,
+    uint32_t                       index)
+  {
+    char* result;
+
+    _OrthancPluginFindOperation params;
+    memset(&params, 0, sizeof(params));
+    params.query = query;
+    params.index = index;
+    params.resultString = &result;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetFindQueryTagName, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+
+
+  /**
+   * @brief Get the value associated with one tag in a C-Find query.
+   *
+   * This function returns the value associated with one tag in the
+   * given C-Find query.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param query The C-Find query.
+   * @param index The index of the tag of interest.
+   * @return The NULL value in case of error, or a string containing the value of the tag.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE char*  OrthancPluginGetFindQueryValue(
+    OrthancPluginContext*          context,
+    const OrthancPluginFindQuery*  query,
+    uint32_t                       index)
+  {
+    char* result;
+
+    _OrthancPluginFindOperation params;
+    memset(&params, 0, sizeof(params));
+    params.query = query;
+    params.index = index;
+    params.resultString = &result;
+
+    if (context->InvokeService(context, _OrthancPluginService_GetFindQueryValue, &params) != OrthancPluginErrorCode_Success)
+    {
+      /* Error */
+      return NULL;
+    }
+    else
+    {
+      return result;
+    }
+  }
+ 
+
+
+
+  typedef struct
+  {
+    OrthancPluginMoveCallback   callback;
+    OrthancPluginGetMoveSize    getMoveSize;
+    OrthancPluginApplyMove      applyMove;
+    OrthancPluginFreeMove       freeMove;
+  } _OrthancPluginMoveCallback;
+
+  /**
+   * @brief Register a callback to handle C-Move requests.
+   *
+   * This function registers a callback to handle C-Move SCP requests.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param callback The main callback.
+   * @param getMoveSize Callback to read the number of C-Move suboperations.
+   * @param applyMove Callback to apply one C-Move suboperations.
+   * @param freeMove Callback to free the C-Move driver.
+   * @return 0 if success, other value if error.
+   * @ingroup DicomCallbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginRegisterMoveCallback(
+    OrthancPluginContext*       context,
+    OrthancPluginMoveCallback   callback,
+    OrthancPluginGetMoveSize    getMoveSize,
+    OrthancPluginApplyMove      applyMove,
+    OrthancPluginFreeMove       freeMove)
+  {
+    _OrthancPluginMoveCallback params;
+    params.callback = callback;
+    params.getMoveSize = getMoveSize;
+    params.applyMove = applyMove;
+    params.freeMove = freeMove;
+
+    return context->InvokeService(context, _OrthancPluginService_RegisterMoveCallback, &params);
+  }
+
+
+
+  typedef struct
+  {
+    OrthancPluginFindMatcher** target;
+    const void*                query;
+    uint32_t                   size;
+  } _OrthancPluginCreateFindMatcher;
+
+
+  /**
+   * @brief Create a C-Find matcher.
+   *
+   * This function creates a "matcher" object that can be used to
+   * check whether a DICOM instance matches a C-Find query. The C-Find
+   * query must be expressed as a DICOM buffer.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param query The C-Find DICOM query.
+   * @param size The size of the DICOM query.
+   * @return The newly allocated matcher. It must be freed with OrthancPluginFreeFindMatcher().
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginFindMatcher* OrthancPluginCreateFindMatcher(
+    OrthancPluginContext*  context,
+    const void*            query,
+    uint32_t               size)
+  {
+    OrthancPluginFindMatcher* target = NULL;
+
+    _OrthancPluginCreateFindMatcher params;
+    memset(&params, 0, sizeof(params));
+    params.target = &target;
+    params.query = query;
+    params.size = size;
+
+    if (context->InvokeService(context, _OrthancPluginService_CreateFindMatcher, &params) != OrthancPluginErrorCode_Success)
+    {
+      return NULL;
+    }
+    else
+    {
+      return target;
+    }
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginFindMatcher*   matcher;
+  } _OrthancPluginFreeFindMatcher;
+
+  /**
+   * @brief Free a C-Find matcher.
+   *
+   * This function frees a matcher that was created using OrthancPluginCreateFindMatcher().
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param matcher The matcher of interest.
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE void  OrthancPluginFreeFindMatcher(
+    OrthancPluginContext*     context, 
+    OrthancPluginFindMatcher* matcher)
+  {
+    _OrthancPluginFreeFindMatcher params;
+    params.matcher = matcher;
+
+    context->InvokeService(context, _OrthancPluginService_FreeFindMatcher, &params);
+  }
+
+
+  typedef struct
+  {
+    const OrthancPluginFindMatcher*  matcher;
+    const void*                      dicom;
+    uint32_t                         size;
+    int32_t*                         isMatch;
+  } _OrthancPluginFindMatcherIsMatch;
+
+  /**
+   * @brief Test whether a DICOM instance matches a C-Find query.
+   *
+   * This function checks whether one DICOM instance matches C-Find
+   * matcher that was previously allocated using
+   * OrthancPluginCreateFindMatcher().
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param matcher The matcher of interest.
+   * @param dicom The DICOM instance to be matched.
+   * @param size The size of the DICOM instance.
+   * @return 1 if the DICOM instance matches the query, 0 otherwise.
+   * @ingroup Toolbox
+   **/
+  ORTHANC_PLUGIN_INLINE int32_t  OrthancPluginFindMatcherIsMatch(
+    OrthancPluginContext*            context,
+    const OrthancPluginFindMatcher*  matcher,
+    const void*                      dicom,
+    uint32_t                         size)
+  {
+    int32_t isMatch = 0;
+
+    _OrthancPluginFindMatcherIsMatch params;
+    params.matcher = matcher;
+    params.dicom = dicom;
+    params.size = size;
+    params.isMatch = &isMatch;
+
+    if (context->InvokeService(context, _OrthancPluginService_FindMatcherIsMatch, &params) == OrthancPluginErrorCode_Success)
+    {
+      return isMatch;
+    }
+    else
+    {
+      /* Error: Assume non-match */
+      return 0;
+    }
+  }
+
+
+  typedef struct
+  {
+    OrthancPluginIncomingHttpRequestFilter2 callback;
+  } _OrthancPluginIncomingHttpRequestFilter2;
+
+  /**
+   * @brief Register a callback to filter incoming HTTP requests.
+   *
+   * This function registers a custom callback to filter incoming HTTP/REST
+   * requests received by the HTTP server of Orthanc.
+   *
+   * @param context The Orthanc plugin context, as received by OrthancPluginInitialize().
+   * @param callback The callback.
+   * @return 0 if success, other value if error.
+   * @ingroup Callbacks
+   **/
+  ORTHANC_PLUGIN_INLINE OrthancPluginErrorCode OrthancPluginRegisterIncomingHttpRequestFilter2(
+    OrthancPluginContext*                   context,
+    OrthancPluginIncomingHttpRequestFilter2 callback)
+  {
+    _OrthancPluginIncomingHttpRequestFilter2 params;
+    params.callback = callback;
+
+    return context->InvokeService(context, _OrthancPluginService_RegisterIncomingHttpRequestFilter2, &params);
+  }
+
+#ifdef  __cplusplus
+}
+#endif
+
+
+/** @} */
+