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1 /**
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2 * Transfers accelerator plugin for Orthanc
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3 * Copyright (C) 2018 Osimis, Belgium
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4 *
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5 * This program is free software: you can redistribute it and/or
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6 * modify it under the terms of the GNU Affero General Public License
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7 * as published by the Free Software Foundation, either version 3 of
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8 * the License, or (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful, but
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11 * WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 * Affero General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU Affero General Public License
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16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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17 **/
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18
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19
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20 #include "SourceDicomInstance.h"
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21
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22 #include <Core/Logging.h>
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23 #include <Core/Toolbox.h>
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24 #include <Plugins/Samples/Common/OrthancPluginCppWrapper.h>
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25
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26
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27 namespace OrthancPlugins
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28 {
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29 SourceDicomInstance::SourceDicomInstance(OrthancPluginContext* context,
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30 const std::string& instanceId) :
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31 context_(context)
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32 {
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33 LOG(INFO) << "Transfers accelerator reading DICOM instance: " << instanceId;
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34
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35 MemoryBuffer buffer(context);
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36 buffer.GetDicomInstance(instanceId);
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37
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38 info_.reset(new DicomInstanceInfo(instanceId, buffer));
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39
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40 buffer_ = buffer.Release();
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41 }
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42
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43
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44 SourceDicomInstance::~SourceDicomInstance()
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45 {
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46 OrthancPluginFreeMemoryBuffer(context_, &buffer_);
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47 }
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48
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49
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50 const DicomInstanceInfo& SourceDicomInstance::GetInfo() const
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51 {
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52 assert(info_.get() != NULL);
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53 return *info_;
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54 }
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55
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56
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57 void SourceDicomInstance::GetChunk(std::string& target /* out */,
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58 std::string& md5 /* out */,
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59 size_t offset,
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60 size_t size) const
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61 {
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62 if (offset + size > buffer_.size)
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63 {
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64 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange);
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65 }
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66
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67 const char* start = reinterpret_cast<const char*>(buffer_.data) + offset;
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68 target.assign(start, start + size);
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69
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70 Orthanc::Toolbox::ComputeMD5(md5, start, size);
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71 }
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72 }
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