feat: add cast_value and scale_offset codecs

changes/3874.feature.md

@@ -0,0 +1 @@
+Add `cast_value` and `scale_offset` codecs.

pyproject.toml

@@ -69,6 +69,7 @@ remote = [
 gpu = [
     "cupy-cuda12x",
 ]
+cast-value-rs = ["cast-value-rs"]
 cli = ["typer"]
 optional = ["universal-pathlib"]
 
@@ -166,6 +167,7 @@ matrix.deps.features = [
   {value = "remote", if = ["optional"]},
   {value = "optional", if = ["optional"]},
   {value = "cli", if = ["optional"]},
+  {value = "cast-value-rs", if = ["optional"]},
 ]
 matrix.deps.dependency-groups = [
   {value = "remote-tests", if = ["optional"]},

src/zarr/codecs/__init__.py

@@ -2,6 +2,7 @@
 
 from zarr.codecs.blosc import BloscCname, BloscCodec, BloscShuffle
 from zarr.codecs.bytes import BytesCodec, Endian
+from zarr.codecs.cast_value import CastValue
 from zarr.codecs.crc32c_ import Crc32cCodec
 from zarr.codecs.gzip import GzipCodec
 from zarr.codecs.numcodecs import (
@@ -27,6 +28,7 @@
     Zlib,
     Zstd,
 )
+from zarr.codecs.scale_offset import ScaleOffset
 from zarr.codecs.sharding import ShardingCodec, ShardingCodecIndexLocation
 from zarr.codecs.transpose import TransposeCodec
 from zarr.codecs.vlen_utf8 import VLenBytesCodec, VLenUTF8Codec
@@ -38,9 +40,11 @@
     "BloscCodec",
     "BloscShuffle",
     "BytesCodec",
+    "CastValue",
     "Crc32cCodec",
     "Endian",
     "GzipCodec",
+    "ScaleOffset",
     "ShardingCodec",
     "ShardingCodecIndexLocation",
     "TransposeCodec",
@@ -50,12 +54,14 @@
 ]
 
 register_codec("blosc", BloscCodec)
+register_codec("cast_value", CastValue)
 register_codec("bytes", BytesCodec)
 
 # compatibility with earlier versions of ZEP1
 register_codec("endian", BytesCodec)
 register_codec("crc32c", Crc32cCodec)
 register_codec("gzip", GzipCodec)
+register_codec("scale_offset", ScaleOffset)
 register_codec("sharding_indexed", ShardingCodec)
 register_codec("zstd", ZstdCodec)
 register_codec("vlen-utf8", VLenUTF8Codec)