1 files changed, 14 insertions, 1 deletions
diff --git a/evc/src/ser.rs b/evc/src/ser.rs
index 3b7814f..61ca684 100644
--- a/evc/src/ser.rs
+++ b/evc/src/ser.rs
@@ -141,6 +141,18 @@ impl Ser for usize {
         Ok(unsafe { std::mem::transmute_copy(&buf) })
     }
 }
+impl Ser for isize {
+    fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
+        Ok(sink
+            .write_all(&unsafe { std::mem::transmute_copy::<_, [u8; 8]>(self) })
+            .context("write isize")?)
+    }
+    fn read(source: &mut impl Read) -> anyhow::Result<Self> {
+        let mut buf = [0u8; 8];
+        source.read_exact(&mut buf)?;
+        Ok(unsafe { std::mem::transmute_copy(&buf) })
+    }
+}
 impl Ser for f32 {
     fn write(&self, sink: &mut impl Write) -> anyhow::Result<()> {
         Ok(sink
@@ -171,6 +183,7 @@ mod test {
     use super::{Ser, Sink};
     use crate::header::Header;
     use crate::ser::Source;
+    use crate::vec2::Vec2;
     use std::fmt::Debug;
     use std::io::Cursor;
 
@@ -196,7 +209,7 @@ mod test {
     fn header() {
         test_ser(Header {
             frame_count: 123,
-            resolution: (13, 37),
+            resolution: Vec2 { x: 13, y: 37 },
         });
     }
     #[test]