feat(ndcv-bridge): add ndcv-bridge for ndarray and opencv interaction

ndcv-bridge/src/codec/encode.rs

@@ -0,0 +1,56 @@
+use super::codecs::CvEncoder;
+use super::error::ErrorReason;
+use crate::conversions::NdAsImage;
+use crate::NdCvError;
+use error_stack::*;
+use ndarray::ArrayBase;
+use std::path::Path;
+
+pub trait Encodable<E: Encoder> {
+    fn encode(&self, encoder: &E) -> Result<Vec<u8>, NdCvError> {
+        let input = self.transform()?;
+        encoder.encode(input)
+    }
+
+    fn write(&self, path: impl AsRef<Path>, encoder: &E) -> Result<(), NdCvError> {
+        let buf = self.encode(encoder)?;
+
+        std::fs::write(path, buf)
+            .map_err(|e| match e.kind() {
+                std::io::ErrorKind::NotFound => {
+                    Report::new(e).attach_printable(ErrorReason::ImageWriteFileNotFound)
+                }
+                std::io::ErrorKind::PermissionDenied => {
+                    Report::new(e).attach_printable(ErrorReason::ImageWritePermissionDenied)
+                }
+                std::io::ErrorKind::OutOfMemory => {
+                    Report::new(e).attach_printable(ErrorReason::OutOfMemory)
+                }
+                std::io::ErrorKind::StorageFull => {
+                    Report::new(e).attach_printable(ErrorReason::OutOfStorage)
+                }
+                _ => Report::new(e).attach_printable(ErrorReason::ImageWriteOtherError),
+            })
+            .change_context(NdCvError)
+    }
+
+    fn transform(&self) -> Result<<E as Encoder>::Input<'_>, NdCvError>;
+}
+
+pub trait Encoder {
+    type Input<'a>
+    where
+        Self: 'a;
+
+    fn encode(&self, input: Self::Input<'_>) -> Result<Vec<u8>, NdCvError>;
+}
+
+impl<T: bytemuck::Pod + Copy, S: ndarray::Data<Elem = T>, D: ndarray::Dimension>
+    Encodable<CvEncoder> for ArrayBase<S, D>
+where
+    Self: NdAsImage<T, D>,
+{
+    fn transform(&self) -> Result<<CvEncoder as Encoder>::Input<'_>, NdCvError> {
+        self.as_image_mat()
+    }
+}