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The sum of the two calls

The sum of the two calls unpack()+dcraw_process().

unpack() is about 8-10s (11 sec for a 24mp DNG) and dcraw_process() is around 8-10s too.

except for a raw file from Sony a6500 where unpack() take only 0.4 sec. May be uncompressed pixel data?

Are the timing normal? Are there any tips to reduce the loading time?

Thank you.