--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Framework/ColorSpaces.h	Fri Oct 18 13:08:55 2024 +0200
@@ -0,0 +1,192 @@
+/**
+ * Orthanc - A Lightweight, RESTful DICOM Store
+ * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
+ * Department, University Hospital of Liege, Belgium
+ * Copyright (C) 2017-2023 Osimis S.A., Belgium
+ * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
+ * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium
+ *
+ * This program is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation, either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ **/
+
+
+#pragma once
+
+#include <stdint.h>
+#include <string>
+
+
+namespace OrthancWSI
+{
+  class sRGBColor;
+  class XYZColor;
+  class LABColor;
+
+
+  class RGBColor
+  {
+  private:
+    uint8_t  r_;
+    uint8_t  g_;
+    uint8_t  b_;
+
+  public:
+    RGBColor(uint8_t r,
+             uint8_t g,
+             uint8_t b) :
+      r_(r),
+      g_(g),
+      b_(b)
+    {
+    }
+
+    RGBColor(const sRGBColor& srgb);
+
+    uint8_t GetR() const
+    {
+      return r_;
+    }
+
+    uint8_t GetG() const
+    {
+      return g_;
+    }
+
+    uint8_t GetB() const
+    {
+      return b_;
+    }
+  };
+
+
+  // Those correspond to Standard Illuminant D65
+  // https://en.wikipedia.org/wiki/SRGB#From_CIE_XYZ_to_sRGB
+  class sRGBColor
+  {
+  private:
+    float  r_;
+    float  g_;
+    float  b_;
+
+  public:
+    sRGBColor(float r,
+              float g,
+              float b) :
+      r_(r),
+      g_(g),
+      b_(b)
+    {
+    }
+
+    sRGBColor(const RGBColor& rgb);
+
+    sRGBColor(const XYZColor& xyz);
+
+    float GetR() const
+    {
+      return r_;
+    }
+
+    float GetG() const
+    {
+      return g_;
+    }
+
+    float GetB() const
+    {
+      return b_;
+    }
+  };
+
+
+  class XYZColor
+  {
+  private:
+    float  x_;
+    float  y_;
+    float  z_;
+
+  public:
+    XYZColor(const sRGBColor& srgb);
+
+    XYZColor(const LABColor& lab);
+
+    float GetX() const
+    {
+      return x_;
+    }
+
+    float GetY() const
+    {
+      return y_;
+    }
+
+    float GetZ() const
+    {
+      return z_;
+    }
+  };
+
+
+  class LABColor
+  {
+  private:
+    float  l_;
+    float  a_;
+    float  b_;
+
+  public:
+    LABColor() :
+      l_(0),
+      a_(0),
+      b_(0)
+    {
+    }
+
+    LABColor(float l,
+             float a,
+             float b) :
+      l_(l),
+      a_(a),
+      b_(b)
+    {
+    }
+
+    LABColor(const XYZColor& xyz);
+
+    float GetL() const
+    {
+      return l_;
+    }
+
+    float GetA() const
+    {
+      return a_;
+    }
+
+    float GetB() const
+    {
+      return b_;
+    }
+
+    void EncodeDicomRecommendedAbsentPixelCIELab(uint16_t target[3]) const;
+
+    static LABColor DecodeDicomRecommendedAbsentPixelCIELab(uint16_t l,
+                                                            uint16_t a,
+                                                            uint16_t b);
+
+    static bool DecodeDicomRecommendedAbsentPixelCIELab(LABColor& target,
+                                                        const std::string& tag);
+  };
+}