fix for rayon, new test

bingus/Cargo.toml

@@ -12,3 +12,4 @@ keywords.workspace = true
 [dependencies]
 image = { version = "0.25", features = ["rayon"] }
 num = "0"
+rayon = "1"

bingus/src/img/image.rs

@@ -1,7 +1,8 @@
-use std::ops::{BitOr, Deref, Shl};
+use std::ops::{BitOr, Deref, DerefMut, Shl};
 
 pub use image::*;
 use num::{traits::ToBytes, Zero};
+use rayon::iter::ParallelIterator;
 
 use crate::{Bendable, IntoDataBytes, TryFromDataBytes};
 
@@ -54,13 +55,18 @@ where
 
 impl<P: Pixel> Bendable for ImageBuffer<P, Vec<P::Subpixel>>
 where
-    Vec<P::Subpixel>: Deref<Target = [P::Subpixel]>,
+    Vec<P::Subpixel>: Deref<Target = [P::Subpixel]> + DerefMut,
-    P::Subpixel:
+    P::Subpixel: ToBytes
-        ToBytes + Zero + Shl<u8, Output = P::Subpixel> + BitOr<P::Subpixel, Output = P::Subpixel>,
+        + Zero
+        + Shl<u8, Output = P::Subpixel>
+        + BitOr<P::Subpixel, Output = P::Subpixel>
+        + Send
+        + Sync,
+    P: Pixel + Send + Sync,
 {
     type Unit = P;
-    fn apply<F: Fn(&Self::Unit) -> Self::Unit>(mut self, f: F) -> Self {
+    fn apply<F: Fn(&Self::Unit) -> Self::Unit + Sync>(mut self, f: F) -> Self {
-        self.pixels_mut().for_each(|p| *p = f(p));
+        self.par_pixels_mut().for_each(|p| *p = f(p));
         self
     }
 }
@@ -69,8 +75,7 @@ where
 mod tests {
     #[cfg(test)]
     mod ser_de {
-        use super::super::{Dimensions, IntoDataBytes, TryFromDataBytes};
+        use super::super::{Dimensions, IntoDataBytes, RgbImage, TryFromDataBytes};
-        use image::RgbImage;
 
         #[test]
         fn empty() {
@@ -86,5 +91,20 @@ mod tests {
                 )
             )
         }
+
+        #[test]
+        fn simple() {
+            let image = RgbImage::from_raw(3, 1, vec![1, 2, 3, 4, 5, 6, 7, 8, 9]).unwrap();
+            assert_eq!(
+                Ok(image.clone()),
+                RgbImage::try_from_bytes(
+                    image.into_bytes(),
+                    Dimensions {
+                        width: 3,
+                        height: 1
+                    }
+                )
+            )
+        }
     }
 }

bingus/src/lib.rs

@@ -18,7 +18,7 @@ pub trait Bendable: TryFromDataBytes + IntoDataBytes {
     ) -> Result<Self, <Self as TryFromDataBytes>::Error> {
         Self::try_from_bytes(b.into_bytes(), format)
     }
-    fn apply<F: Fn(&Self::Unit) -> Self::Unit>(self, f: F) -> Self;
+    fn apply<F: Fn(&Self::Unit) -> Self::Unit + Sync>(self, f: F) -> Self;
 }
 
 pub trait IntoDataBytes: Sized {