Mercurial > hg > orthanc
view Core/FileStorage/StorageAccessor.cpp @ 1834:b1a6f49b21dd
GDCM decoder sample
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 27 Nov 2015 12:53:32 +0100 |
parents | 53e045b5a8ec |
children | b1291df2f780 |
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/** * Orthanc - A Lightweight, RESTful DICOM Store * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics * Department, University Hospital 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/>. **/ #include "../PrecompiledHeaders.h" #include "StorageAccessor.h" #include "../Compression/ZlibCompressor.h" #include "../OrthancException.h" #include "../HttpServer/HttpStreamTranscoder.h" namespace Orthanc { FileInfo StorageAccessor::Write(const void* data, size_t size, FileContentType type, CompressionType compression, bool storeMd5) { std::string uuid = Toolbox::GenerateUuid(); std::string md5; if (storeMd5) { Toolbox::ComputeMD5(md5, data, size); } switch (compression) { case CompressionType_None: { area_.Create(uuid, data, size, type); return FileInfo(uuid, type, size, md5); } case CompressionType_ZlibWithSize: { ZlibCompressor zlib; std::string compressed; zlib.Compress(compressed, data, size); std::string compressedMD5; if (storeMd5) { Toolbox::ComputeMD5(compressedMD5, compressed); } if (compressed.size() > 0) { area_.Create(uuid, &compressed[0], compressed.size(), type); } else { area_.Create(uuid, NULL, 0, type); } return FileInfo(uuid, type, size, md5, CompressionType_ZlibWithSize, compressed.size(), compressedMD5); } default: throw OrthancException(ErrorCode_NotImplemented); } } void StorageAccessor::Read(std::string& content, const FileInfo& info) { switch (info.GetCompressionType()) { case CompressionType_None: { area_.Read(content, info.GetUuid(), info.GetContentType()); break; } case CompressionType_ZlibWithSize: { ZlibCompressor zlib; std::string compressed; area_.Read(compressed, info.GetUuid(), info.GetContentType()); IBufferCompressor::Uncompress(content, zlib, compressed); break; } default: { throw OrthancException(ErrorCode_NotImplemented); } } // TODO Check the validity of the uncompressed MD5? } void StorageAccessor::Read(Json::Value& content, const FileInfo& info) { std::string s; Read(s, info); Json::Reader reader; if (!reader.parse(s, content)) { throw OrthancException(ErrorCode_BadFileFormat); } } void StorageAccessor::SetupSender(BufferHttpSender& sender, const FileInfo& info, const std::string& mime) { area_.Read(sender.GetBuffer(), info.GetUuid(), info.GetContentType()); sender.SetContentType(mime); const char* extension; switch (info.GetContentType()) { case FileContentType_Dicom: extension = ".dcm"; break; case FileContentType_DicomAsJson: extension = ".json"; break; default: // Non-standard content type extension = ""; } sender.SetContentFilename(info.GetUuid() + std::string(extension)); } void StorageAccessor::AnswerFile(HttpOutput& output, const FileInfo& info, const std::string& mime) { BufferHttpSender sender; SetupSender(sender, info, mime); HttpStreamTranscoder transcoder(sender, info.GetCompressionType()); output.Answer(transcoder); } void StorageAccessor::AnswerFile(RestApiOutput& output, const FileInfo& info, const std::string& mime) { BufferHttpSender sender; SetupSender(sender, info, mime); HttpStreamTranscoder transcoder(sender, info.GetCompressionType()); output.AnswerStream(transcoder); } }