Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Loaders/BasicFetchingStrategy.cpp @ 1948:d459477804bf
added SetFrame() in Stone Web viewer
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 15 Jul 2022 16:17:23 +0200 |
| parents | 7053b8a0aaec |
| children | 07964689cb0b |
| rev | line source |
|---|---|
| 708 | 1 /** |
| 2 * Stone of Orthanc | |
| 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
| 4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2022 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 708 | 7 * |
| 8 * This program is free software: you can redistribute it and/or | |
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9 * modify it under the terms of the GNU Lesser General Public License |
| 708 | 10 * as published by the Free Software Foundation, either version 3 of |
| 11 * the License, or (at your option) any later version. | |
| 12 * | |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
|
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15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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16 * Lesser General Public License for more details. |
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17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
| 708 | 21 **/ |
| 22 | |
| 23 | |
| 24 #include "BasicFetchingStrategy.h" | |
| 25 | |
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26 #include <OrthancException.h> |
| 708 | 27 |
| 1624 | 28 #include <cassert> |
| 29 | |
| 708 | 30 namespace OrthancStone |
| 31 { | |
| 32 void BasicFetchingStrategy::Schedule(unsigned int item, | |
| 33 unsigned int quality) | |
| 34 { | |
| 35 assert(item < GetItemsCount() && | |
| 36 quality <= maxQuality_); | |
| 37 | |
| 38 if (nextQuality_[item] <= quality) | |
| 39 { | |
| 40 content_.push_back(ContentItem(item, quality)); | |
| 41 } | |
| 42 } | |
| 43 | |
| 44 | |
| 45 BasicFetchingStrategy::BasicFetchingStrategy(IFetchingItemsSorter* sorter, // Takes ownership | |
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46 unsigned int maxQuality, |
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47 unsigned int initialItem) : |
| 708 | 48 sorter_(sorter), |
| 49 maxQuality_(maxQuality), | |
| 50 position_(0), | |
| 51 blockSize_(2) | |
| 52 { | |
| 53 if (sorter == NULL) | |
| 54 { | |
| 55 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
| 56 } | |
| 57 | |
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58 nextQuality_.resize(sorter_->GetItemsCount(), 0); // Does not change along calls to "SetCurrent()" |
| 708 | 59 |
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60 SetCurrent(initialItem); |
| 708 | 61 } |
| 62 | |
| 63 | |
| 64 void BasicFetchingStrategy::SetBlockSize(unsigned int size) | |
| 65 { | |
| 1571 | 66 if (size == 0) |
| 708 | 67 { |
| 68 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 69 } | |
| 70 | |
| 71 blockSize_ = size; | |
| 72 } | |
| 73 | |
| 74 | |
| 75 bool BasicFetchingStrategy::GetNext(unsigned int& item, | |
| 76 unsigned int& quality) | |
| 77 { | |
| 78 if (position_ >= content_.size()) | |
| 79 { | |
| 80 return false; | |
| 81 } | |
| 82 else | |
| 83 { | |
| 84 item = content_[position_].GetItem(); | |
| 85 quality = content_[position_].GetQuality(); | |
| 86 | |
| 87 assert(nextQuality_[item] <= quality); | |
| 88 nextQuality_[item] = quality + 1; | |
| 89 | |
| 90 position_ ++; | |
| 91 return true; | |
| 92 } | |
| 93 } | |
| 94 | |
| 95 | |
| 96 void BasicFetchingStrategy::SetCurrent(unsigned int item) | |
| 97 { | |
| 98 // TODO - This function is O(N) complexity where "N" is the | |
| 99 // number of items times the max quality. Could use a LRU index. | |
| 100 | |
| 101 position_ = 0; | |
| 102 | |
| 103 std::vector<unsigned int> v; | |
| 104 sorter_->Sort(v, item); | |
| 105 | |
| 106 assert(v.size() == GetItemsCount()); | |
| 107 | |
| 108 if (v.size() == 0) | |
| 109 { | |
| 110 return; | |
| 111 } | |
| 112 | |
| 113 content_.clear(); | |
| 114 content_.reserve(v.size() * maxQuality_); | |
| 115 | |
| 116 Schedule(v.front(), maxQuality_); | |
| 117 | |
| 118 for (unsigned int q = 0; q <= maxQuality_; q++) | |
| 119 { | |
| 120 unsigned int start = 1 + q * blockSize_; | |
| 121 unsigned int end = start + blockSize_; | |
| 122 | |
| 123 if (q == maxQuality_ || | |
| 124 end > v.size()) | |
| 125 { | |
| 725 | 126 end = static_cast<int>(v.size()); |
| 708 | 127 } |
| 128 | |
| 129 unsigned int a = 0; | |
| 130 if (maxQuality_ >= q + 1) | |
| 131 { | |
| 132 a = maxQuality_ - q - 1; | |
| 133 } | |
| 134 | |
| 135 for (unsigned int j = a; j <= maxQuality_; j++) | |
| 136 { | |
| 137 for (unsigned int i = start; i < end; i++) | |
| 138 { | |
| 139 Schedule(v[i], j); | |
| 140 } | |
| 141 } | |
| 142 } | |
| 143 } | |
| 144 | |
| 145 | |
| 146 void BasicFetchingStrategy::RecycleFurthest(unsigned int& item) | |
| 147 { | |
| 148 throw Orthanc::OrthancException(Orthanc::ErrorCode_NotImplemented); | |
| 149 } | |
| 150 } |