1 files changed, 18 insertions, 0 deletions
diff --git a/evc/src/codec/decode.rs b/evc/src/codec/decode.rs
new file mode 100644
index 0000000..9dc6a69
--- /dev/null
+++ b/evc/src/codec/decode.rs
@@ -0,0 +1,18 @@
+use crate::{
+    block::{Block, BlockInner},
+    frame::Frame,
+    view::View,
+};
+
+pub fn decode_block(block: &Block, mut target: View<&mut Frame>, prev: View<&Frame>) {
+    match &block.inner {
+        BlockInner::Literal(pixels) => target.set_pixels(pixels),
+        BlockInner::Split(box [a, b]) => {
+            let [at, bt] = target.split_mut_unsafe();
+            let [ap, bp] = prev.split();
+            decode_block(a, at, ap);
+            decode_block(b, bt, bp);
+        }
+        BlockInner::Reference { translation: _ } => target.copy_from(&prev),
+    }
+}