Camera Raw filter's model and pixel kernels (12.8a)

src/Document/CameraRawDetailOptics.h

@@ -0,0 +1,45 @@
+#pragma once
+
+// Sharpening and noise reduction; Amount runs 0 to 150.
+struct CameraRawDetailSettings {
+    double sharpenAmount = 0;
+    double sharpenRadius = 10;
+    double sharpenDetail = 25;
+    double sharpenMasking = 0;
+    double noiseLuminance = 0;
+    double noiseLuminanceDetail = 50;
+    double noiseLuminanceContrast = 0;
+    double noiseColor = 0;
+    double noiseColorDetail = 50;
+    double noiseColorSmoothness = 50;
+    bool adjustsSharpening() const;
+    bool adjustsNoise() const;
+    bool adjusts() const;
+    CameraRawDetailSettings normalized() const;
+    friend bool operator==(const CameraRawDetailSettings &, const CameraRawDetailSettings &) = default;
+};
+
+// Generic lens corrections: a rendered layer carries no profile.
+struct CameraRawOpticsSettings {
+    bool removeChromaticAberration = false;
+    bool enableLensProfile = false;
+    double profileDistortion = 100;
+    double profileVignetting = 100;
+    // −100 to 100, the Lens Correction filter's sign.
+    double distortion = 0;
+    double purpleAmount = 0;
+    // Degrees, 0 to 360; the low handle stays lower.
+    double purpleHueLow = 270;
+    double purpleHueHigh = 310;
+    double greenAmount = 0;
+    double greenHueLow = 60;
+    double greenHueHigh = 120;
+    // Brightens the corners against lens falloff.
+    double vignetteAmount = 0;
+    double vignetteMidpoint = 50;
+    bool adjusts() const;
+    CameraRawOpticsSettings normalized() const;
+    // The radial distortion handed to `lens_distort`.
+    double distortionK(double profileStrength) const;
+    friend bool operator==(const CameraRawOpticsSettings &, const CameraRawOpticsSettings &) = default;
+};