1 files changed, 11 insertions, 8 deletions
diff --git a/evc/src/bin/decode.rs b/evc/src/bin/decode.rs
index 293181a..0a00426 100644
--- a/evc/src/bin/decode.rs
+++ b/evc/src/bin/decode.rs
@@ -1,6 +1,5 @@
 #![feature(box_patterns)]
-use std::io::{self, BufReader, BufWriter};
-
+use anyhow::Context;
 use clap::Parser;
 use evc::{
     block::{Block, BlockInner},
@@ -9,24 +8,26 @@ use evc::{
     ser::Source,
     view::View,
 };
+use std::io::{BufReader, BufWriter};
 
 #[derive(Parser)]
 #[clap(about, version)]
 pub struct DecodeArgs {}
 
-fn main() -> io::Result<()> {
+fn main() -> anyhow::Result<()> {
     let _args = DecodeArgs::parse();
 
     let mut input = BufReader::new(std::io::stdin());
     let mut output = BufWriter::new(std::io::stdout());
 
-    let header = input.get::<Header>()?;
+    let header = input.get::<Header>().context("reading header")?;
     eprintln!("{header:?}");
     let size = header.resolution;
-  
+
     let mut prev = Frame::new(size);
-    loop {
-        let block = Block::read(&mut input, size)?;
+    for i in 0.. {
+        eprintln!("decode frame {i}");
+        let block = Block::read(&mut input, size).context("reading encoded frame")?;
         let mut frame = Frame::new(size);
 
         blit_block(
@@ -35,9 +36,11 @@ fn main() -> io::Result<()> {
             prev.view((0, 0), size),
         );
 
-        frame.write(&mut output)?;
+        frame.write(&mut output).context("writing raw frame")?;
         prev = frame;
     }
+    drop(input);
+    Ok(())
 }
 
 fn blit_block(block: &Block, mut target: View<&mut Frame>, prev: View<&Frame>) {