serde for filters when serialize feature is enabled

Author: zshipko

src/filters/filter.rs

@@ -2,6 +2,7 @@ use crate::*;
 
 /// Convert between colors
 #[derive(Clone, Copy, Default, Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Convert<T: Color>(std::marker::PhantomData<T>);
 
 /// Create new color conversion filter
@@ -16,6 +17,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Convert<D> {
 }
 
 #[derive(Debug, Default)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Saturation(pub f64);
 
 /// Adjust saturation
@@ -33,6 +35,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Saturation {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Brightness(f64);
 
 /// Adjust image brightness
@@ -49,6 +52,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Brightness {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Exposure(f64);
 
 /// Adjust image exposure, the argument is the number of stops to increase or decrease exposure by
@@ -65,6 +69,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Exposure {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Contrast(pub f64);
 
 /// Adjust image contrast
@@ -81,6 +86,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Contrast {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Crop(Region);
 
 /// Crop an image
@@ -107,6 +113,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Crop {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Invert;
 
 /// Invert an image
@@ -123,6 +130,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Invert {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Blend;
 
 /// Average two images
@@ -139,6 +147,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Blend {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct GammaLog(f64);
 
 /// Convert to log gamma
@@ -157,6 +166,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for GammaLog {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct GammaLin(f64);
 
 /// Convert to linear gamma
@@ -259,6 +269,7 @@ impl<
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Clamp;
 
 /// Clamp pixel values
@@ -273,6 +284,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Clamp {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Normalize {
     min: f64,
     max: f64,
@@ -308,6 +320,7 @@ impl<T: Type, C: Color, U: Type, D: Color> Filter<T, C, U, D> for Normalize {
 }
 
 #[derive(Debug)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 struct Noop;
 
 /// Filter that does nothing

src/filters/pipeline.rs

@@ -3,6 +3,7 @@ use crate::*;
 /// Used to determine if a filter can be executed and interleaved at the pixel level or if the
 /// whole filter needs to be evaulated before moving to the next filter
 #[derive(Debug, PartialEq, Clone, Copy, Eq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub enum Schedule {
     /// Allows pixel level composition
     Pixel,

src/histogram.rs

@@ -2,6 +2,7 @@ use crate::*;
 
 /// Image histogram
 #[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Histogram {
     total: usize,
     bins: Box<[usize]>,

src/kernel.rs

@@ -5,6 +5,7 @@ use crate::*;
 
 /// 2-dimensional convolution kernel
 #[derive(Debug, Clone, PartialEq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Kernel {
     rows: usize,
     cols: usize,

src/meta.rs

@@ -6,8 +6,8 @@ use rayon::prelude::*;
 use std::marker::PhantomData;
 
 /// Image metadata
-#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[derive(Debug, Clone, PartialEq, Eq)]
+#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 pub struct Meta<T: Type, C: Color> {
     /// Image size
     pub size: Size,