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annotate OrthancFramework/Sources/DicomParsing/Internals/DicomFrameIndex.cpp @ 4137:6774605d4341

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keep only one signature for FromDcmtkBridge::ExtractDicomSummary()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 06 Aug 2020 17:38:55 +0200
parents 2724977419fb
children 1a26daefc3fe
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1 /**
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2 * Orthanc - A Lightweight, RESTful DICOM Store
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
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4 * Department, University Hospital of Liege, Belgium
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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6 *
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7 * This program is free software: you can redistribute it and/or
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8 * modify it under the terms of the GNU Lesser General Public License
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9 * as published by the Free Software Foundation, either version 3 of
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10 * the License, or (at your option) any later version.
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11 *
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12 * This program is distributed in the hope that it will be useful, but
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 * Lesser General Public License for more details.
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16 *
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17 * You should have received a copy of the GNU Lesser General Public
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18 * License along with this program. If not, see
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19 * <http://www.gnu.org/licenses/>.
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20 **/
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23 #include "../../PrecompiledHeaders.h"
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24 #include "DicomFrameIndex.h"
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26 #include "../../OrthancException.h"
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27 #include "../../DicomFormat/DicomImageInformation.h"
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28 #include "../FromDcmtkBridge.h"
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29 #include "../../Endianness.h"
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30 #include "DicomImageDecoder.h"
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32 #include <boost/lexical_cast.hpp>
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34 #include <dcmtk/dcmdata/dcdeftag.h>
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35 #include <dcmtk/dcmdata/dcpxitem.h>
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36 #include <dcmtk/dcmdata/dcpixseq.h>
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38 namespace Orthanc
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39 {
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40 class DicomFrameIndex::FragmentIndex : public DicomFrameIndex::IIndex
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41 {
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42 private:
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43 DcmPixelSequence* pixelSequence_;
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44 std::vector<DcmPixelItem*> startFragment_;
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45 std::vector<unsigned int> countFragments_;
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46 std::vector<unsigned int> frameSize_;
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48 void GetOffsetTable(std::vector<uint32_t>& table)
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49 {
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50 DcmPixelItem* item = NULL;
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51 if (!pixelSequence_->getItem(item, 0).good() ||
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52 item == NULL)
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53 {
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54 throw OrthancException(ErrorCode_BadFileFormat);
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55 }
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57 uint32_t length = item->getLength();
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58 if (length == 0)
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59 {
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60 // Degenerate case: Empty offset table means only one frame
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61 // that overlaps all the fragments
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62 table.resize(1);
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63 table[0] = 0;
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64 return;
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65 }
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67 if (length % 4 != 0)
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68 {
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69 // Error: Each fragment is index with 4 bytes (uint32_t)
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70 throw OrthancException(ErrorCode_BadFileFormat);
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71 }
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73 uint8_t* content = NULL;
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74 if (!item->getUint8Array(content).good() ||
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75 content == NULL)
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76 {
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77 throw OrthancException(ErrorCode_InternalError);
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78 }
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80 table.resize(length / 4);
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81
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82 // The offset table is always in little endian in the DICOM
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83 // file. Swap it to host endianness if needed.
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84 const uint32_t* offset = reinterpret_cast<const uint32_t*>(content);
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85 for (size_t i = 0; i < table.size(); i++, offset++)
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86 {
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87 table[i] = le32toh(*offset);
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88 }
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89 }
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92 public:
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93 FragmentIndex(DcmPixelSequence* pixelSequence,
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94 unsigned int countFrames) :
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95 pixelSequence_(pixelSequence)
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96 {
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97 assert(pixelSequence != NULL);
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98
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99 startFragment_.resize(countFrames);
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100 countFragments_.resize(countFrames);
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101 frameSize_.resize(countFrames);
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102
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103 // The first fragment corresponds to the offset table
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104 unsigned int countFragments = static_cast<unsigned int>(pixelSequence_->card());
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105 if (countFragments < countFrames + 1)
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
106 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
107 throw OrthancException(ErrorCode_BadFileFormat);
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
108 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
109
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parents:
diff changeset
110 if (countFragments == countFrames + 1)
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
111 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
112 // Simple case: There is one fragment per frame.
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diff changeset
113
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diff changeset
114 DcmObject* fragment = pixelSequence_->nextInContainer(NULL); // Skip the offset table
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115 if (fragment == NULL)
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diff changeset
116 {
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diff changeset
117 throw OrthancException(ErrorCode_InternalError);
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
118 }
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
119
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
120 for (unsigned int i = 0; i < countFrames; i++)
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diff changeset
121 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
122 fragment = pixelSequence_->nextInContainer(fragment);
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diff changeset
123 startFragment_[i] = dynamic_cast<DcmPixelItem*>(fragment);
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diff changeset
124 frameSize_[i] = fragment->getLength();
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diff changeset
125 countFragments_[i] = 1;
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diff changeset
126 }
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
127
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diff changeset
128 return;
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129 }
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Sebastien Jodogne <s.jodogne@gmail.com>
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130
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diff changeset
131 // Parse the offset table
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132 std::vector<uint32_t> offsetOfFrame;
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diff changeset
133 GetOffsetTable(offsetOfFrame);
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diff changeset
134
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
135 if (offsetOfFrame.size() != countFrames ||
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
136 offsetOfFrame[0] != 0)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
137 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
138 throw OrthancException(ErrorCode_BadFileFormat);
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
139 }
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
140
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
141 // Loop over the fragments (ignoring the offset table). This is
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
142 // an alternative, faster implementation to DCMTK's
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parents:
diff changeset
143 // "DcmCodec::determineStartFragment()".
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diff changeset
144 DcmObject* fragment = pixelSequence_->nextInContainer(NULL);
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diff changeset
145 if (fragment == NULL)
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diff changeset
146 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
147 throw OrthancException(ErrorCode_InternalError);
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diff changeset
148 }
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parents:
diff changeset
149
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diff changeset
150 fragment = pixelSequence_->nextInContainer(fragment); // Skip the offset table
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parents:
diff changeset
151 if (fragment == NULL)
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parents:
diff changeset
152 {
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parents:
diff changeset
153 throw OrthancException(ErrorCode_InternalError);
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
154 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
155
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diff changeset
156 uint32_t offset = 0;
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diff changeset
157 unsigned int currentFrame = 0;
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diff changeset
158 startFragment_[0] = dynamic_cast<DcmPixelItem*>(fragment);
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diff changeset
159
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diff changeset
160 unsigned int currentFragment = 1;
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parents:
diff changeset
161 while (fragment != NULL)
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
162 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
163 if (currentFrame + 1 < countFrames &&
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
164 offset == offsetOfFrame[currentFrame + 1])
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parents:
diff changeset
165 {
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parents:
diff changeset
166 currentFrame += 1;
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diff changeset
167 startFragment_[currentFrame] = dynamic_cast<DcmPixelItem*>(fragment);
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parents:
diff changeset
168 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
169
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
170 frameSize_[currentFrame] += fragment->getLength();
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
171 countFragments_[currentFrame]++;
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parents:
diff changeset
172
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parents:
diff changeset
173 // 8 bytes = overhead for the item tag and length field
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
174 offset += fragment->getLength() + 8;
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
175
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parents:
diff changeset
176 currentFragment++;
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parents:
diff changeset
177 fragment = pixelSequence_->nextInContainer(fragment);
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parents:
diff changeset
178 }
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parents:
diff changeset
179
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parents:
diff changeset
180 if (currentFragment != countFragments ||
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parents:
diff changeset
181 currentFrame + 1 != countFrames ||
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
182 fragment != NULL)
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
183 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
184 throw OrthancException(ErrorCode_BadFileFormat);
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
185 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
186
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parents:
diff changeset
187 assert(startFragment_.size() == countFragments_.size() &&
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parents:
diff changeset
188 startFragment_.size() == frameSize_.size());
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parents:
diff changeset
189 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
190
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
191
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
192 virtual void GetRawFrame(std::string& frame,
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
193 unsigned int index) const
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diff changeset
194 {
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parents:
diff changeset
195 if (index >= startFragment_.size())
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parents:
diff changeset
196 {
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parents:
diff changeset
197 throw OrthancException(ErrorCode_ParameterOutOfRange);
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diff changeset
198 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
199
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parents:
diff changeset
200 frame.resize(frameSize_[index]);
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parents:
diff changeset
201 if (frame.size() == 0)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
202 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
203 return;
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
204 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
205
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parents:
diff changeset
206 uint8_t* target = reinterpret_cast<uint8_t*>(&frame[0]);
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
207
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parents:
diff changeset
208 size_t offset = 0;
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parents:
diff changeset
209 DcmPixelItem* fragment = startFragment_[index];
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parents:
diff changeset
210 for (unsigned int i = 0; i < countFragments_[index]; i++)
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parents:
diff changeset
211 {
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
212 uint8_t* content = NULL;
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
213 if (!fragment->getUint8Array(content).good() ||
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diff changeset
214 content == NULL)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
215 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
216 throw OrthancException(ErrorCode_InternalError);
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
217 }
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diff changeset
218
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diff changeset
219 assert(offset + fragment->getLength() <= frame.size());
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
220
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diff changeset
221 memcpy(target + offset, content, fragment->getLength());
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
222 offset += fragment->getLength();
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
223
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diff changeset
224 fragment = dynamic_cast<DcmPixelItem*>(pixelSequence_->nextInContainer(fragment));
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
225 }
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
226 }
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
227 };
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
228
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229
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
230
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
231 class DicomFrameIndex::UncompressedIndex : public DicomFrameIndex::IIndex
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
232 {
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diff changeset
233 private:
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diff changeset
234 uint8_t* pixelData_;
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diff changeset
235 size_t frameSize_;
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
236
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diff changeset
237 public:
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diff changeset
238 UncompressedIndex(DcmDataset& dataset,
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239 unsigned int countFrames,
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240 size_t frameSize) :
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
241 pixelData_(NULL),
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
242 frameSize_(frameSize)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
243 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
244 size_t size = 0;
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
245
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Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
246 DcmElement* e;
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
247 if (dataset.findAndGetElement(DCM_PixelData, e).good() &&
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
248 e != NULL)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
249 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
250 size = e->getLength();
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
251
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
252 if (size > 0)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
253 {
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254 pixelData_ = NULL;
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255 if (!e->getUint8Array(pixelData_).good() ||
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
256 pixelData_ == NULL)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
257 {
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diff changeset
258 throw OrthancException(ErrorCode_BadFileFormat);
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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diff changeset
259 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
260 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
261 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
262
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parents:
diff changeset
263 if (size < frameSize_ * countFrames)
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parents:
diff changeset
264 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
265 throw OrthancException(ErrorCode_BadFileFormat);
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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266 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
267 }
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parents:
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268
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269 virtual void GetRawFrame(std::string& frame,
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270 unsigned int index) const
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diff changeset
271 {
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parents:
diff changeset
272 frame.resize(frameSize_);
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diff changeset
273 if (frameSize_ > 0)
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parents:
diff changeset
274 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
275 memcpy(&frame[0], pixelData_ + index * frameSize_, frameSize_);
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diff changeset
276 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
277 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
278 };
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
279
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
280
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
281 class DicomFrameIndex::PsmctRle1Index : public DicomFrameIndex::IIndex
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
282 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
283 private:
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
284 std::string pixelData_;
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
285 size_t frameSize_;
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
286
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
287 public:
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parents:
diff changeset
288 PsmctRle1Index(DcmDataset& dataset,
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parents:
diff changeset
289 unsigned int countFrames,
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
290 size_t frameSize) :
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
291 frameSize_(frameSize)
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parents:
diff changeset
292 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
293 if (!DicomImageDecoder::DecodePsmctRle1(pixelData_, dataset) ||
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
294 pixelData_.size() < frameSize * countFrames)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
295 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
296 throw OrthancException(ErrorCode_BadFileFormat);
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
297 }
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
298 }
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
299
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
300 virtual void GetRawFrame(std::string& frame,
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
301 unsigned int index) const
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
302 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
303 frame.resize(frameSize_);
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
304 if (frameSize_ > 0)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
305 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
306 memcpy(&frame[0], reinterpret_cast<const uint8_t*>(&pixelData_[0]) + index * frameSize_, frameSize_);
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
307 }
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
308 }
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
309 };
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
310
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
311
3745
113a7b994a12 extracting the raw frame in the transcoder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3640
diff changeset
312 unsigned int DicomFrameIndex::GetFramesCount(DcmDataset& dicom)
1950
533ff46e944b return a single raw frame from DICOM videos
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 1929
diff changeset
313 {
1924
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
314 const char* tmp = NULL;
3745
113a7b994a12 extracting the raw frame in the transcoder
Sebastien Jodogne <s.jodogne@gmail.com>
parents: 3640
diff changeset
315 if (!dicom.findAndGetString(DCM_NumberOfFrames, tmp).good() ||
1924
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
316 tmp == NULL)
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
317 {
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
318 return 1;
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
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parents:
diff changeset
319 }
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
320
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
321 int count = -1;
6c73df12ca51 New URI: "/instances/.../frames/.../raw" to access the raw frames (bypass image decoding)
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
322 try
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Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
323 {
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324 count = boost::lexical_cast<int>(tmp);
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325 }
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326 catch (boost::bad_lexical_cast&)
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327 {
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328 }
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329
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330 if (count < 0)
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331 {
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332 throw OrthancException(ErrorCode_BadFileFormat);
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333 }
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334 else
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335 {
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336 return static_cast<unsigned int>(count);
1924
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337 }
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338 }
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339
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340
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341 DicomFrameIndex::DicomFrameIndex(DcmDataset& dicom)
1924
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342 {
1956
fc16ee04e71b refactoring
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343 countFrames_ = GetFramesCount(dicom);
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344 if (countFrames_ == 0)
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345 {
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346 // The image has no frame. No index is to be built.
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347 return;
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348 }
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349
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350 // Test whether this image is composed of a sequence of fragments
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351 DcmPixelSequence* pixelSequence = FromDcmtkBridge::GetPixelSequence(dicom);
1924
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352 if (pixelSequence != NULL)
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353 {
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354 index_.reset(new FragmentIndex(pixelSequence, countFrames_));
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355 return;
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356 }
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357
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358 // Extract information about the image structure
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359 DicomMap tags;
4137
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360 std::set<DicomTag> ignoreTagLength;
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361 FromDcmtkBridge::ExtractDicomSummary(tags, dicom, ORTHANC_MAXIMUM_TAG_LENGTH, ignoreTagLength);
1924
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362
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363 DicomImageInformation information(tags);
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364
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365 // Access to the raw pixel data
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366 if (DicomImageDecoder::IsPsmctRle1(dicom))
1924
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367 {
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368 index_.reset(new PsmctRle1Index(dicom, countFrames_, information.GetFrameSize()));
1924
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369 }
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370 else
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parents:
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371 {
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372 index_.reset(new UncompressedIndex(dicom, countFrames_, information.GetFrameSize()));
1924
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373 }
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374 }
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375
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376
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377 void DicomFrameIndex::GetRawFrame(std::string& frame,
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378 unsigned int index) const
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379 {
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380 if (index >= countFrames_)
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381 {
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382 throw OrthancException(ErrorCode_ParameterOutOfRange);
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383 }
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384 else if (index_.get() != NULL)
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385 {
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386 return index_->GetRawFrame(frame, index);
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387 }
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388 else
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parents:
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389 {
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390 frame.clear();
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391 }
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parents:
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392 }
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parents:
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393 }