feat: support byte buf (de)serialization

Cargo.toml

@@ -7,7 +7,7 @@ description = "Serde implementation of OMG Common Data Representation (CDR) enco
 readme = "README.md"
 keywords = ["network","protocol","dds","rtps"]
 license = "Apache-2.0"
-homepage = "https://atostek.com/en/products/rustdds/"  
+homepage = "https://atostek.com/en/products/rustdds/"
 repository = "https://github.com/jhelovuo/cdr-encoding"
 
 [workspace]
@@ -19,7 +19,7 @@ members = [
 ]
 
 
-# Although cdr-encoding, cdr-encoding-size, and cdr-encoding-size-derive 
+# Although cdr-encoding, cdr-encoding-size, and cdr-encoding-size-derive
 # are relaed semantically,
 # the main crate cdr-encoding does not technically depend on the two others.
 #

src/cdr_deserializer.rs

@@ -267,7 +267,15 @@ where
   where
     V: Visitor<'de>,
   {
-    self.deserialize_seq(visitor)
+    // Align to 4 bytes
+    self.calculate_padding_count_from_written_bytes_and_remove(4)?;
+    // Length prefix
+    let len = self.next_bytes(4)?.read_u32::<BO>().unwrap() as usize;
+    // Read the entire buffer at once
+    let buf = self.next_bytes(len)?.to_vec();
+
+    visitor.visit_byte_buf(buf)
+
   }
 
   fn deserialize_option<V>(self, visitor: V) -> Result<V::Value>

src/cdr_serializer.rs

@@ -321,6 +321,9 @@ where
   }
 
   fn serialize_bytes(self, v: &[u8]) -> Result<()> {
+    // Write length prefix
+    self.serialize_u32(v.len() as u32)?;
+    // Write raw bytes
     self.writer.write_all(v)?;
     Ok(())
   }