Mercurial > hg > orthanc
diff Plugins/OrthancCPlugin/OrthancCPlugin.h @ 1023:226cfef3822e templating
integration mainline->templating
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Thu, 10 Jul 2014 11:42:32 +0200 |
parents | 501880d76474 |
children | ab6a51f075fd |
line wrap: on
line diff
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Plugins/OrthancCPlugin/OrthancCPlugin.h Thu Jul 10 11:42:32 2014 +0200 @@ -0,0 +1,702 @@ +/** + * \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 store the context pointer so that it can use the plugin + * services of Orthanc. It must also register all its callbacks using + * ::OrthancPluginRegisterRestCallback(). + * -# <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. + * + * + **/ + + + +/** + * @defgroup CInterface C Interface + * @brief The C interface to create Orthanc plugins. + * + * These functions must be used to create C plugins for Orthanc. + **/ + + + +/** + * Orthanc - A Lightweight, RESTful DICOM Store + * Copyright (C) 2012-2014 Medical Physics Department, CHU of Liege, + * 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 + + + +/******************************************************************** + ** 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. + ********************************************************************/ + +#ifdef _MSC_VER +#include "../../Resources/VisualStudio/stdint.h" +#else +#include <stdint.h> +#endif + +#include <stdlib.h> + + + +/******************************************************************** + ** Definition of the Orthanc Plugin API. + ********************************************************************/ + +/** @{ */ + +#ifdef __cplusplus +extern "C" +{ +#endif + + /** + * 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; + + + /** + * @brief The parameters of a REST request. + **/ + 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; + } OrthancPluginHttpRequest; + + typedef enum + { + /* Generic services */ + _OrthancPluginService_LogInfo = 1, + _OrthancPluginService_LogWarning = 2, + _OrthancPluginService_LogError = 3, + + /* Registration of callbacks */ + _OrthancPluginService_RegisterRestCallback = 1000, + + /* Sending answers to REST calls */ + _OrthancPluginService_AnswerBuffer = 2000, + _OrthancPluginService_CompressAndAnswerPngImage = 2001, + _OrthancPluginService_Redirect = 2002, + + /* Access to the Orthanc database and API */ + _OrthancPluginService_GetDicomForInstance = 3000, + _OrthancPluginService_RestApiGet = 3001, + _OrthancPluginService_RestApiPost = 3002, + _OrthancPluginService_RestApiDelete = 3003, + _OrthancPluginService_RestApiPut = 3004 + } _OrthancPluginService; + + + + /** + * The memory layout of the pixels of an image. + **/ + 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; + + + /** + * @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. + **/ + typedef struct _OrthancPluginRestOutput_t OrthancPluginRestOutput; + + + /** + * @brief Signature of a callback function that answers to a REST request. + **/ + typedef int32_t (*OrthancPluginRestCallback) ( + OrthancPluginRestOutput* output, + const char* url, + const OrthancPluginHttpRequest* request); + + + /** + * @brief Opaque structure that contains information about the Orthanc core. + **/ + typedef struct _OrthancPluginContext_t + { + void* pluginsManager; + const char* orthancVersion; + void (*Free) (void* buffer); + int32_t (*InvokeService) (struct _OrthancPluginContext_t* context, + _OrthancPluginService service, + const void* params); + } OrthancPluginContext; + + + + /** + * @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) + { + context->Free(str); + } + + + /** + * @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. + * + * @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. + **/ + 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, ¶ms); + } + + + + 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. + **/ + 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, ¶ms); + } + + + typedef struct + { + OrthancPluginRestOutput* output; + OrthancPluginPixelFormat format; + uint32_t width; + uint32_t height; + uint32_t pitch; + const void* buffer; + } _OrthancPluginCompressAndAnswerPngImage; + + /** + * @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. + **/ + ORTHANC_PLUGIN_INLINE void OrthancPluginCompressAndAnswerPngImage( + OrthancPluginContext* context, + OrthancPluginRestOutput* output, + OrthancPluginPixelFormat format, + uint32_t width, + uint32_t height, + uint32_t pitch, + const void* buffer) + { + _OrthancPluginCompressAndAnswerPngImage params; + params.output = output; + params.format = format; + params.width = width; + params.height = height; + params.pitch = pitch; + params.buffer = buffer; + context->InvokeService(context, _OrthancPluginService_CompressAndAnswerPngImage, ¶ms); + } + + + + 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. + * @param instanceId The Orthanc identifier of the DICOM instance of interest. + * @return 0 if success, other value if error. + **/ + ORTHANC_PLUGIN_INLINE int OrthancPluginGetDicomForInstance( + OrthancPluginContext* context, + OrthancPluginMemoryBuffer* target, + const char* instanceId) + { + _OrthancPluginGetDicomForInstance params; + params.target = target; + params.instanceId = instanceId; + return context->InvokeService(context, _OrthancPluginService_GetDicomForInstance, ¶ms); + } + + + + 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. + * @param uri The URI in the built-in Orthanc API. + * @return 0 if success, other value if error. + **/ + ORTHANC_PLUGIN_INLINE int OrthancPluginRestApiGet( + OrthancPluginContext* context, + OrthancPluginMemoryBuffer* target, + const char* uri) + { + _OrthancPluginRestApiGet params; + params.target = target; + params.uri = uri; + return context->InvokeService(context, _OrthancPluginService_RestApiGet, ¶ms); + } + + + + 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. + * @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, other value if error. + **/ + ORTHANC_PLUGIN_INLINE int 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, ¶ms); + } + + + + /** + * @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, other value if error. + **/ + ORTHANC_PLUGIN_INLINE int OrthancPluginRestApiDelete( + OrthancPluginContext* context, + const char* uri) + { + return context->InvokeService(context, _OrthancPluginService_RestApiDelete, 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. + * @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, other value if error. + **/ + ORTHANC_PLUGIN_INLINE int 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, ¶ms); + } + + + typedef struct + { + OrthancPluginRestOutput* output; + const char* redirection; + } _OrthancPluginRedirect; + + /** + * @brief Redirect a GET 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. + **/ + ORTHANC_PLUGIN_INLINE void OrthancPluginRedirect( + OrthancPluginContext* context, + OrthancPluginRestOutput* output, + const char* redirection) + { + _OrthancPluginRedirect params; + params.output = output; + params.redirection = redirection; + context->InvokeService(context, _OrthancPluginService_Redirect, ¶ms); + } + + +#ifdef __cplusplus +} +#endif + + +/** @} */ +