Use nvcomp defaults for algo options. (#450)

This PR updates the nvcomp bindings to use nvcomp's defaults rather than hardcode the default options. The defaults changed in nvcomp 4.0.1, so this is needed for #449.

Authors:
  - Bradley Dice (https://github.com/bdice)
  - https://github.com/jakirkham
  - Vukasin Milovanovic (https://github.com/vuule)

Approvers:
  - Vukasin Milovanovic (https://github.com/vuule)
  - Alexey Kamenev (https://github.com/Alexey-Kamenev)
  - Mads R. B. Kristensen (https://github.com/madsbk)
  - Lawrence Mitchell (https://github.com/wence-)

URL: #450

python/kvikio/kvikio/_lib/libnvcomp_ll.pyx

@@ -357,6 +357,7 @@ from kvikio._lib.nvcomp_ll_cxx_api cimport (
     nvcompBatchedLZ4CompressGetTempSize,
     nvcompBatchedLZ4DecompressAsync,
     nvcompBatchedLZ4DecompressGetTempSize,
+    nvcompBatchedLZ4DefaultOpts,
     nvcompBatchedLZ4GetDecompressSizeAsync,
     nvcompBatchedLZ4Opts_t,
 )
@@ -371,20 +372,24 @@ class nvCompBatchAlgorithmLZ4(nvCompBatchAlgorithm):
 
     HEADER_SIZE_BYTES: size_t = sizeof(uint32_t)
 
-    def __init__(self, data_type: int = 0, has_header: bool = True):
+    def __init__(self, data_type: int = None, has_header: bool = True):
         """Initialize the codec.
 
         Parameters
         ----------
-        data_type: int
-            Source data type.
+        data_type: int or None
+            Source data type. If None, uses nvcomp default options.
         has_header: bool
             Whether the compressed data has a header.
             This enables data compatibility between numcodecs LZ4 codec,
             which has the header and nvCOMP LZ4 codec which does not
             require the header.
         """
-        self.options = nvcompBatchedLZ4Opts_t(data_type)
+        if data_type is None:
+            self.options = nvcompBatchedLZ4DefaultOpts
+        else:
+            self.options = nvcompBatchedLZ4Opts_t(data_type)
+
         self.has_header = has_header
 
         # Note on LZ4 header structure: numcodecs LZ4 codec prepends
@@ -621,6 +626,7 @@ from kvikio._lib.nvcomp_ll_cxx_api cimport (
     nvcompBatchedGdeflateCompressGetTempSize,
     nvcompBatchedGdeflateDecompressAsync,
     nvcompBatchedGdeflateDecompressGetTempSize,
+    nvcompBatchedGdeflateDefaultOpts,
     nvcompBatchedGdeflateGetDecompressSizeAsync,
     nvcompBatchedGdeflateOpts_t,
 )
@@ -633,8 +639,11 @@ class nvCompBatchAlgorithmGdeflate(nvCompBatchAlgorithm):
 
     options: nvcompBatchedGdeflateOpts_t
 
-    def __init__(self, algo: int = 0):
-        self.options = nvcompBatchedGdeflateOpts_t(algo)
+    def __init__(self, algo: int = None):
+        if algo is None:
+            self.options = nvcompBatchedGdeflateDefaultOpts
+        else:
+            self.options = nvcompBatchedGdeflateOpts_t(algo)
 
     def _get_comp_temp_size(
         self,
@@ -756,6 +765,7 @@ from kvikio._lib.nvcomp_ll_cxx_api cimport (
     nvcompBatchedZstdCompressGetTempSize,
     nvcompBatchedZstdDecompressAsync,
     nvcompBatchedZstdDecompressGetTempSize,
+    nvcompBatchedZstdDefaultOpts,
     nvcompBatchedZstdGetDecompressSizeAsync,
     nvcompBatchedZstdOpts_t,
 )
@@ -769,7 +779,7 @@ class nvCompBatchAlgorithmZstd(nvCompBatchAlgorithm):
     options: nvcompBatchedZstdOpts_t
 
     def __init__(self):
-        self.options = nvcompBatchedZstdOpts_t(0)
+        self.options = nvcompBatchedZstdDefaultOpts
 
     def _get_comp_temp_size(
         self,
@@ -891,6 +901,7 @@ from kvikio._lib.nvcomp_ll_cxx_api cimport (
     nvcompBatchedSnappyCompressGetTempSize,
     nvcompBatchedSnappyDecompressAsync,
     nvcompBatchedSnappyDecompressGetTempSize,
+    nvcompBatchedSnappyDefaultOpts,
     nvcompBatchedSnappyGetDecompressSizeAsync,
     nvcompBatchedSnappyOpts_t,
 )
@@ -904,7 +915,7 @@ class nvCompBatchAlgorithmSnappy(nvCompBatchAlgorithm):
     options: nvcompBatchedSnappyOpts_t
 
     def __init__(self):
-        self.options = nvcompBatchedSnappyOpts_t(0)
+        self.options = nvcompBatchedSnappyDefaultOpts
 
     def _get_comp_temp_size(
         self,
@@ -1026,6 +1037,7 @@ from kvikio._lib.nvcomp_ll_cxx_api cimport (
     nvcompBatchedDeflateCompressGetTempSize,
     nvcompBatchedDeflateDecompressAsync,
     nvcompBatchedDeflateDecompressGetTempSize,
+    nvcompBatchedDeflateDefaultOpts,
     nvcompBatchedDeflateGetDecompressSizeAsync,
     nvcompBatchedDeflateOpts_t,
 )
@@ -1038,14 +1050,17 @@ class nvCompBatchAlgorithmDeflate(nvCompBatchAlgorithm):
 
     options: nvcompBatchedDeflateOpts_t
 
-    def __init__(self, algo: int = 0):
-        self.options = nvcompBatchedDeflateOpts_t(algo)
+    def __init__(self, algo: int = None):
+        if algo is None:
+            self.options = nvcompBatchedDeflateDefaultOpts
+        else:
+            self.options = nvcompBatchedDeflateOpts_t(algo)
 
     def _get_comp_temp_size(
         self,
         size_t batch_size,
         size_t max_uncompressed_chunk_bytes,
-    ) -> (nvcompStatus_t, size_t):
+    ) -> tuple[nvcompStatus_t, size_t]:
         cdef size_t temp_bytes = 0
 
         err = nvcompBatchedDeflateCompressGetTempSize(

python/kvikio/kvikio/_lib/nvcomp_ll_cxx_api.pxd

@@ -47,6 +47,8 @@ cdef extern from "nvcomp/lz4.h" nogil:
     ctypedef struct nvcompBatchedLZ4Opts_t:
         nvcompType_t data_type
 
+    cdef nvcompBatchedLZ4Opts_t nvcompBatchedLZ4DefaultOpts
+
     # Compression API.
     cdef nvcompStatus_t nvcompBatchedLZ4CompressGetTempSize(
         size_t batch_size,
@@ -109,6 +111,8 @@ cdef extern from "nvcomp/gdeflate.h" nogil:
     ctypedef struct nvcompBatchedGdeflateOpts_t:
         int algo
 
+    cdef nvcompBatchedGdeflateOpts_t nvcompBatchedGdeflateDefaultOpts
+
     # Compression API.
     cdef nvcompStatus_t nvcompBatchedGdeflateCompressGetTempSize(
         size_t batch_size,
@@ -171,6 +175,8 @@ cdef extern from "nvcomp/zstd.h" nogil:
     ctypedef struct nvcompBatchedZstdOpts_t:
         int reserved
 
+    cdef nvcompBatchedZstdOpts_t nvcompBatchedZstdDefaultOpts
+
     # Compression API.
     cdef nvcompStatus_t nvcompBatchedZstdCompressGetTempSize(
         size_t batch_size,
@@ -233,6 +239,8 @@ cdef extern from "nvcomp/snappy.h" nogil:
     ctypedef struct nvcompBatchedSnappyOpts_t:
         int reserved
 
+    cdef nvcompBatchedSnappyOpts_t nvcompBatchedSnappyDefaultOpts
+
     # Compression API.
     cdef nvcompStatus_t nvcompBatchedSnappyCompressGetTempSize(
         size_t batch_size,
@@ -296,6 +304,8 @@ cdef extern from "nvcomp/deflate.h" nogil:
     ctypedef struct nvcompBatchedDeflateOpts_t:
         int algo
 
+    cdef nvcompBatchedDeflateOpts_t nvcompBatchedDeflateDefaultOpts
+
     # Compression API.
     cdef nvcompStatus_t nvcompBatchedDeflateCompressGetTempSize(
         size_t batch_size,