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comparison Framework/Inputs/DecodedTiledPyramid.cpp @ 0:4a7a53257c7d

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initial commit
author Sebastien Jodogne <s.jodogne@gmail.com>
date Sat, 22 Oct 2016 21:48:33 +0200
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children 7a88c614be04
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-1:000000000000 0:4a7a53257c7d
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 *
6 * This program is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU Affero General Public License
8 * as published by the Free Software Foundation, either version 3 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Affero General Public License for more details.
15 *
16 * You should have received a copy of the GNU Affero General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 **/
19
20
21 #include "DecodedTiledPyramid.h"
22
23 #include "../ImageToolbox.h"
24
25 #include <memory>
26 #include <cassert>
27
28 namespace OrthancWSI
29 {
30 DecodedTiledPyramid::DecodedTiledPyramid()
31 {
32 SetBackgroundColor(255, 255, 255);
33 }
34
35
36 void DecodedTiledPyramid::SetBackgroundColor(uint8_t red,
37 uint8_t green,
38 uint8_t blue)
39 {
40 backgroundColor_[0] = red;
41 backgroundColor_[1] = green;
42 backgroundColor_[2] = blue;
43 }
44
45
46 void DecodedTiledPyramid::GetBackgroundColor(uint8_t& red,
47 uint8_t& green,
48 uint8_t& blue) const
49 {
50 red = backgroundColor_[0];
51 green = backgroundColor_[1];
52 blue = backgroundColor_[2];
53 }
54
55
56 Orthanc::ImageAccessor* DecodedTiledPyramid::DecodeTile(unsigned int level,
57 unsigned int tileX,
58 unsigned int tileY)
59 {
60 unsigned int x = tileX * GetTileWidth();
61 unsigned int y = tileY * GetTileHeight();
62
63 std::auto_ptr<Orthanc::ImageAccessor> tile
64 (ImageToolbox::Allocate(GetPixelFormat(), GetTileWidth(), GetTileHeight()));
65
66 if (x >= GetLevelWidth(level) ||
67 y >= GetLevelHeight(level)) // (*)
68 {
69 ImageToolbox::Set(*tile, backgroundColor_[0], backgroundColor_[1], backgroundColor_[2]);
70 return tile.release();
71 }
72
73 bool fit = true;
74 unsigned int regionWidth;
75 if (x + GetTileWidth() <= GetLevelWidth(level))
76 {
77 regionWidth = GetTileWidth();
78 }
79 else
80 {
81 assert(GetLevelWidth(level) >= x); // This results from (*)
82 regionWidth = GetLevelWidth(level) - x;
83 fit = false;
84 }
85
86 unsigned int regionHeight;
87 if (y + GetTileHeight() <= GetLevelHeight(level))
88 {
89 regionHeight = GetTileHeight();
90 }
91 else
92 {
93 assert(GetLevelHeight(level) >= y); // This results from (*)
94 regionHeight = GetLevelHeight(level) - y;
95 fit = false;
96 }
97
98 if (fit)
99 {
100 // The tile entirely lies inside the image
101 ReadRegion(*tile, level, x, y);
102 }
103 else
104 {
105 // The tile exceeds the size of image, decode it to a temporary buffer
106 std::auto_ptr<Orthanc::ImageAccessor> cropped
107 (ImageToolbox::Allocate(GetPixelFormat(), regionWidth, regionHeight));
108 ReadRegion(*cropped, level, x, y);
109
110 // Create a white tile, and fill it with the cropped content
111 ImageToolbox::Set(*tile, backgroundColor_[0], backgroundColor_[1], backgroundColor_[2]);
112 ImageToolbox::Embed(*tile, *cropped, 0, 0);
113 }
114
115 return tile.release();
116 }
117 }