Mercurial > hg > orthanc-stone
annotate Framework/Layers/GrayscaleFrameRenderer.cpp @ 338:b3b3fa0e3689 am-2
BitmapStack
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Fri, 19 Oct 2018 12:50:38 +0200 |
| parents | c80b5bddf86b |
| children | 557c8ff1db5c |
| rev | line source |
|---|---|
| 0 | 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) 2017-2018 Osimis S.A., Belgium |
| 0 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 47 | 8 * modify it under the terms of the GNU Affero General Public License |
| 9 * as published by the Free Software Foundation, either version 3 of | |
| 10 * the License, or (at your option) any later version. | |
| 0 | 11 * |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 47 | 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 * Affero General Public License for more details. | |
| 16 * | |
| 17 * You should have received a copy of the GNU Affero General Public License | |
| 0 | 18 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 **/ | |
| 20 | |
| 21 | |
| 22 #include "GrayscaleFrameRenderer.h" | |
| 23 | |
|
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24 #include <Core/OrthancException.h> |
| 0 | 25 |
| 26 namespace OrthancStone | |
| 27 { | |
| 28 CairoSurface* GrayscaleFrameRenderer::GenerateDisplay(const RenderStyle& style) | |
| 29 { | |
| 338 | 30 assert(frame_->GetFormat() == Orthanc::PixelFormat_Float32); |
| 31 | |
| 0 | 32 std::auto_ptr<CairoSurface> result; |
| 33 | |
| 34 float windowCenter, windowWidth; | |
| 35 style.ComputeWindowing(windowCenter, windowWidth, | |
| 36 defaultWindowCenter_, defaultWindowWidth_); | |
| 37 | |
| 38 float x0 = windowCenter - windowWidth / 2.0f; | |
| 39 float x1 = windowCenter + windowWidth / 2.0f; | |
| 40 | |
| 41 //LOG(INFO) << "Window: " << x0 << " => " << x1; | |
| 42 | |
| 43 result.reset(new CairoSurface(frame_->GetWidth(), frame_->GetHeight())); | |
| 44 | |
| 45 const uint8_t* lut = NULL; | |
| 46 if (style.applyLut_) | |
| 47 { | |
| 48 if (Orthanc::EmbeddedResources::GetFileResourceSize(style.lut_) != 3 * 256) | |
| 49 { | |
| 50 // Invalid colormap | |
| 51 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
| 52 } | |
| 53 | |
| 54 lut = reinterpret_cast<const uint8_t*>(Orthanc::EmbeddedResources::GetFileResourceBuffer(style.lut_)); | |
| 55 } | |
| 106 | 56 |
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57 Orthanc::ImageAccessor target; |
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58 result->GetAccessor(target); |
| 106 | 59 const unsigned int width = target.GetWidth(); |
| 60 const unsigned int height = target.GetHeight(); | |
| 61 | |
| 62 for (unsigned int y = 0; y < height; y++) | |
| 0 | 63 { |
| 64 const float* p = reinterpret_cast<const float*>(frame_->GetConstRow(y)); | |
| 65 uint8_t* q = reinterpret_cast<uint8_t*>(target.GetRow(y)); | |
| 66 | |
| 106 | 67 for (unsigned int x = 0; x < width; x++, p++, q += 4) |
| 0 | 68 { |
| 69 uint8_t v = 0; | |
| 70 if (windowWidth >= 0.001f) // Avoid division by zero | |
| 71 { | |
| 72 if (*p >= x1) | |
| 73 { | |
| 74 v = 255; | |
| 75 } | |
| 76 else if (*p <= x0) | |
| 77 { | |
| 78 v = 0; | |
| 79 } | |
| 80 else | |
| 81 { | |
| 82 // https://en.wikipedia.org/wiki/Linear_interpolation | |
| 83 v = static_cast<uint8_t>(255.0f * (*p - x0) / (x1 - x0)); | |
| 84 } | |
| 85 | |
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86 if (style.reverse_ ^ (photometric_ == Orthanc::PhotometricInterpretation_Monochrome1)) |
| 0 | 87 { |
| 88 v = 255 - v; | |
| 89 } | |
| 90 } | |
| 91 | |
| 92 if (style.applyLut_) | |
| 93 { | |
| 94 assert(lut != NULL); | |
| 95 q[3] = 255; | |
| 96 q[2] = lut[3 * v]; | |
| 97 q[1] = lut[3 * v + 1]; | |
| 98 q[0] = lut[3 * v + 2]; | |
| 99 } | |
| 100 else | |
| 101 { | |
| 102 q[3] = 255; | |
| 103 q[2] = v; | |
| 104 q[1] = v; | |
| 105 q[0] = v; | |
| 106 } | |
| 107 } | |
| 108 } | |
| 109 | |
| 110 return result.release(); | |
| 111 } | |
| 112 | |
| 113 | |
| 114 GrayscaleFrameRenderer::GrayscaleFrameRenderer(Orthanc::ImageAccessor* frame, | |
| 115 const DicomFrameConverter& converter, | |
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116 const CoordinateSystem3D& frameSlice, |
| 0 | 117 double pixelSpacingX, |
| 118 double pixelSpacingY, | |
| 119 bool isFullQuality) : | |
| 77 | 120 FrameRenderer(frameSlice, pixelSpacingX, pixelSpacingY, isFullQuality), |
| 0 | 121 frame_(frame), |
| 122 defaultWindowCenter_(converter.GetDefaultWindowCenter()), | |
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123 defaultWindowWidth_(converter.GetDefaultWindowWidth()), |
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124 photometric_(converter.GetPhotometricInterpretation()) |
| 0 | 125 { |
| 126 if (frame == NULL) | |
| 127 { | |
| 128 throw Orthanc::OrthancException(Orthanc::ErrorCode_ParameterOutOfRange); | |
| 129 } | |
| 130 | |
| 338 | 131 converter.ConvertFrameInplace(frame_); |
| 0 | 132 assert(frame_.get() != NULL); |
| 133 | |
| 134 if (frame_->GetFormat() != Orthanc::PixelFormat_Float32) | |
| 135 { | |
| 136 throw Orthanc::OrthancException(Orthanc::ErrorCode_IncompatibleImageFormat); | |
| 137 } | |
| 138 } | |
| 139 } |