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Improve blosc efficiency #5

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Improve blosc efficiency #5

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7 changes: 6 additions & 1 deletion asdf_compression/blsc/compressor.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,10 +7,15 @@ class BloscCompressor(Compressor):
def compress(self, data, **kwargs):
import blosc

yield blosc.compress(data, **kwargs)
# Type size, necessary for shuffle filter efficiency
# TODO: This should be the type size of the data actually stored, not just "byte" or "uint8"
typesize = data.itemsize

yield blosc.compress(data, typesize=typesize, **kwargs)

def decompress(self, data, out, **kwargs):
import blosc

# TODO: call `self._api.decompress_ptr` instead to avoid copying the output
out[:] = blosc.decompress(b"".join(data), **kwargs)
return out.nbytes