Bindings for MagickLevelImage

src/wand/magick.rs

@@ -251,6 +251,20 @@ impl MagickWand {
         }
     }
 
+    pub fn level_image(
+        &self,
+        black_point: f64,
+        gamma: f64,
+        white_point: f64,
+    ) -> Result<(), &'static str> {
+        let result =
+            unsafe { bindings::MagickLevelImage(self.wand, black_point, gamma, white_point) };
+        match result {
+            bindings::MagickBooleanType_MagickTrue => Ok(()),
+            _ => Err("failed to set size of wand"),
+        }
+    }
+
     /// Extend the image as defined by the geometry, gravity, and wand background color. Set the
     /// (x,y) offset of the geometry to move the original wand relative to the extended wand.
     pub fn extend_image(