Clarify memory conversion in blosc encoding

d-v-b · web-flow · commit 1a5894870aad · 2026-02-28T09:17:44.000-05:00
Add comments to clarify memory conversion in encoding.
diff --git a/src/zarr/codecs/blosc.py b/src/zarr/codecs/blosc.py
@@ -318,6 +318,8 @@ def _encode_sync(
         chunk_bytes: Buffer,
         chunk_spec: ArraySpec,
     ) -> Buffer | None:
+        # Since blosc only support host memory, we convert the input and output of the encoding
+        # between numpy array and buffer
         return chunk_spec.prototype.buffer.from_bytes(
             self._blosc_codec.encode(chunk_bytes.as_numpy_array())
         )

Original file line number	Diff line number	Diff line change
`@@ -318,6 +318,8 @@ def _encode_sync(`
`318`	`318`	`chunk_bytes: Buffer,`
`319`	`319`	`chunk_spec: ArraySpec,`
`320`	`320`	`) -> Buffer \| None:`
	`321`	`+ # Since blosc only support host memory, we convert the input and output of the encoding`
	`322`	`+ # between numpy array and buffer`
`321`	`323`	`return chunk_spec.prototype.buffer.from_bytes(`
`322`	`324`	`self._blosc_codec.encode(chunk_bytes.as_numpy_array())`
`323`	`325`	`)`