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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2015 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU Affero General Public License
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8 * as published by the Free Software Foundation, either version 3 of
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9 * the License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * Affero General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Affero General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20
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21 #include "DecodedImageAdapter.h"
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22
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23 #include "ViewerToolbox.h"
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24 #include "ParsedDicomImage.h"
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25
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26 #include <boost/lexical_cast.hpp>
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27 #include <boost/algorithm/string/predicate.hpp>
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28 #include <json/writer.h>
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29
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30 namespace OrthancPlugins
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31 {
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32 bool DecodedImageAdapter::ParseUri(CompressionType& type,
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33 uint8_t& compressionLevel,
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34 std::string& instanceId,
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35 const std::string& uri)
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36 {
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37 size_t separator = uri.find('-');
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38 if (separator == std::string::npos &&
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39 separator >= 1)
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40 {
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41 return false;
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42 }
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43
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44 std::string compression = uri.substr(0, separator);
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45 instanceId = uri.substr(separator + 1);
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46
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47 if (compression == "deflate")
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48 {
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49 type = CompressionType_Deflate;
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50 }
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51 else if (boost::starts_with(compression, "jpeg"))
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52 {
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53 type = CompressionType_Jpeg;
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54 int level = boost::lexical_cast<int>(compression.substr(4));
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55 if (level <= 0 || level > 100)
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56 {
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57 return false;
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58 }
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59
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60 compressionLevel = static_cast<uint8_t>(level);
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61 }
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62 else
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63 {
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64 return false;
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65 }
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66
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67 return true;
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68 }
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69
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70
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71
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72 bool DecodedImageAdapter::Create(std::string& content,
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73 const std::string& uri)
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74 {
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75 std::string message = "Decoding DICOM instance: " + uri;
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76 OrthancPluginLogInfo(context_, message.c_str());
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77
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78 CompressionType type;
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79 uint8_t level;
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80 std::string instanceId;
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81
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82 if (!ParseUri(type, level, instanceId, uri))
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83 {
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84 return false;
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85 }
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86
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87 std::string file = "/instances/" + instanceId + "/file";
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88
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89 std::string dicom;
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90 if (!GetStringFromOrthanc(dicom, context_, file))
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91 {
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92 return false;
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93 }
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94
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95 ParsedDicomImage image(dicom);
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96
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97 Json::Value json;
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98
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99 if (type == CompressionType_Deflate)
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100 {
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101 if (!image.EncodeUsingDeflate(json, 9))
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102 {
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103 return false;
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104 }
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105 }
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106 else if (type == CompressionType_Jpeg)
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107 {
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108 if (!image.EncodeUsingJpeg(json, level))
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109 {
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110 return false;
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111 }
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112 }
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113 else
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114 {
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115 return false;
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116 }
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117
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118 Json::FastWriter writer;
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119 content = writer.write(json);
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120 return true;
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121 }
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122 }
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