adds codecs that numcodecs defines

codecs/numcodecs.adler32/README.md

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+# Adler32 codec
+
+Defines a `bytes -> bytes` codec that adds a Adler32 checksum to the data.
+
+## Codec name
+
+The value of the `name` member in the codec object MUST be `numcodecs.adler32`.
+
+## Configuration parameters
+
+See https://numcodecs.readthedocs.io/en/stable/checksum32.html#adler32 for details about the configuration parameters.
+
+- `location`
+
+## Example
+
+For example, the array metadata below specifies that the array contains chunks with appended checksum:
+
+```json
+{
+    "codecs": [{ 
+        "name": "bytes", 
+        "configuration": { "endian": "little" } 
+      }, {
+        "name": "numcodecs.adler32",
+        "configuration": {
+          "location": "end"
+        }
+    }],
+}
+```
+
+
+## Format and algorithm
+
+See https://numcodecs.readthedocs.io/en/stable/checksum32.html#adler32 for details about the encoding.
+
+## Change log
+
+No changes yet.
+
+## Current maintainers
+
+* [zarr-python core development team](https://github.com/orgs/zarr-developers/teams/python-core-devs)

codecs/numcodecs.adler32/schema.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "oneOf": [
+    {
+      "type": "object",
+      "properties": {
+        "name": {
+          "const": "numcodecs.adler32"
+        },
+        "configuration": {
+          "type": "object",
+          "properties": {
+            "location": {
+              "type": "string",
+              "enum": ["start", "end"]
+            }
+          },
+          "additionalProperties": false
+        }
+      },
+      "required": ["name"],
+      "additionalProperties": false
+    },
+    { "const": "numcodecs.adler32" }
+  ]
+}

codecs/numcodecs.astype/README.md

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+# AsType codec
+
+Defines a `array -> array` codec that converts data between different types.
+
+## Codec name
+
+The value of the `name` member in the codec object MUST be `numcodecs.astype`.
+
+## Configuration parameters
+
+See https://numcodecs.readthedocs.io/en/stable/filter/astype.html for details about the configuration parameters.
+
+- `encode_dtype`
+- `decode_dtype` (optional)
+
+## Example
+
+For example, the array metadata below specifies that the array contains converted chunks:
+
+```json
+{
+    "codecs": [{
+        "name": "numcodecs.astype",
+        "configuration": {
+          "encode_dtype": "float32"
+        }
+    }, { "name": "bytes", "configuration": { "endian": "little" } }],
+}
+```
+
+
+## Format and algorithm
+
+See https://numcodecs.readthedocs.io/en/stable/filter/astype.html for details about the encoding.
+
+## Change log
+
+No changes yet.
+
+## Current maintainers
+
+* [zarr-python core development team](https://github.com/orgs/zarr-developers/teams/python-core-devs)

codecs/numcodecs.astype/schema.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "type": "object",
+  "properties": {
+    "name": {
+      "const": "numcodecs.astype"
+    },
+    "configuration": {
+      "type": "object",
+      "properties": {
+        "encode_dtype": {
+          "type": "string"
+        },
+        "decode_dtype": {
+          "type": "string"
+        }
+      },
+      "required": ["encode_dtype"],
+      "additionalProperties": false
+    }
+  },
+  "required": ["name", "configuration"],
+  "additionalProperties": false
+}

codecs/numcodecs.bitround/README.md

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+# BitRound codec
+
+Defines a `array -> array` codec to bit-round floating-point numbers.
+
+## Codec name
+
+The value of the `name` member in the codec object MUST be `numcodecs.bitround`.
+
+## Configuration parameters
+
+See https://numcodecs.readthedocs.io/en/stable/filter/bitround.html for details about the configuration parameters.
+
+- `keepbits`
+
+## Example
+
+For example, the array metadata below specifies that the array contains bitrounded chunks:
+
+```json
+{
+    "codecs": [{
+        "name": "numcodecs.bitround",
+        "configuration": {
+            "keepbits": 5
+        }
+    }, { "name": "bytes", "configuration": { "endian": "little" } }],
+}
+```
+
+
+## Format and algorithm
+
+See https://numcodecs.readthedocs.io/en/stable/filter/bitround.html for details about the encoding.
+
+## Change log
+
+No changes yet.
+
+## Current maintainers
+
+* [zarr-python core development team](https://github.com/orgs/zarr-developers/teams/python-core-devs)

codecs/numcodecs.bitround/schema.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "type": "object",
+  "properties": {
+    "name": {
+      "const": "numcodecs.bitround"
+    },
+    "configuration": {
+      "type": "object",
+      "properties": {
+        "keepbits": {
+          "type": "integer"
+        }
+      },
+      "required": ["keepbits"],
+      "additionalProperties": false
+    }
+  },
+  "required": ["name", "configuration"],
+  "additionalProperties": false
+}

codecs/numcodecs.blosc/README.md

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+# Blosc codec
+
+Defines a `bytes -> bytes` codec that compresses chunks using the blosc (version 1) algorithm.
+
+## Codec name
+
+The value of the `name` member in the codec object MUST be `numcodecs.blosc`.
+
+## Configuration parameters
+
+See https://numcodecs.readthedocs.io/en/stable/compression/blosc.html for details about the configuration parameters.
+
+- `cname` (optional)
+- `clevel` (optional)
+- `shuffle` (optional)
+- `blocksize`
+
+## Example
+
+For example, the array metadata below specifies that the array contains blosc compressed chunks:
+
+```json
+{
+    "codecs": [{ "name": "bytes" }, {
+        "name": "numcodecs.blosc",
+        "configuration": {
+            "cname": "zstd",
+            "clevel": 5,
+            "shuffle": 1,
+            "blocksize": 0
+        }
+    }],
+}
+```
+
+
+## Format and algorithm
+
+See https://numcodecs.readthedocs.io/en/stable/compression/blosc.html for details about the encoding.
+
+## Change log
+
+No changes yet.
+
+## Current maintainers
+
+* [zarr-python core development team](https://github.com/orgs/zarr-developers/teams/python-core-devs)

codecs/numcodecs.blosc/schema.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "oneOf": [
+    {
+      "type": "object",
+      "properties": {
+        "name": {
+          "const": "numcodecs.blosc"
+        },
+        "configuration": {
+          "type": "object",
+          "properties": {
+            "cname": {
+              "type": "string",
+              "enum": ["zstd", "blosclz", "lz4", "lz4hc", "zlib", "snappy"]
+            },
+            "clevel": {
+              "type": "integer",
+              "minimum": 0,
+              "maximum": 12
+            },
+            "shuffle": {
+              "type": "integer",
+              "minimum": -1,
+              "maximum": 2
+            },
+            "blocksize": {
+              "type": "integer"
+            }
+          },
+          "additionalProperties": false
+        }
+      },
+      "required": ["name"],
+      "additionalProperties": false
+    },
+    { "const": "numcodecs.blosc" }
+  ]
+}

codecs/numcodecs.bz2/README.md

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+# BZ2 codec
+
+Defines a `bytes -> bytes` codec that compresses chunks using the bzip2 algorithm.
+
+## Codec name
+
+The value of the `name` member in the codec object MUST be `numcodecs.bz2`.
+
+## Configuration parameters
+
+See https://numcodecs.readthedocs.io/en/stable/compression/bz2.html for details about the configuration parameters.
+
+- `level`
+
+## Example
+
+For example, the array metadata below specifies that the array contains bzip2 compressed chunks:
+
+```json
+{
+    "codecs": [{ "name": "bytes" }, {
+        "name": "numcodecs.bz2",
+        "configuration": {
+            "level": 1
+        }
+    }],
+}
+```
+
+
+## Format and algorithm
+
+See https://numcodecs.readthedocs.io/en/stable/compression/bz2.html for details about the encoding.
+
+## Change log
+
+No changes yet.
+
+## Current maintainers
+
+* [zarr-python core development team](https://github.com/orgs/zarr-developers/teams/python-core-devs)

codecs/numcodecs.bz2/schema.json

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+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "oneOf": [
+    {
+      "type": "object",
+      "properties": {
+        "name": {
+          "const": "numcodecs.bz2"
+        },
+        "configuration": {
+          "type": "object",
+          "properties": {
+            "level": {
+              "type": "integer",
+              "minimum": 1,
+              "maximum": 9
+            }
+          },
+          "required": ["level"],
+          "additionalProperties": false
+        }
+      },
+      "required": ["name"],
+      "additionalProperties": false
+    },
+    { "const": "numcodecs.bz2" }
+  ]
+}