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LibRaw::dcraw_process() (plus

LibRaw::dcraw_process() (plus dcraw_make_mem_image()) do full processing steps that include
- white balance
- interpolation
- data scaling to full range (assuming maximum value scaled to 65535 if auto-bright is turned off)
- color conversion
- gamma conversion (on make_mem_image step)

What data you want to use, processed one or original raw values? If you need raw values, you do not need processing step, just use imgdata.rawdata...image pointers to access unprocessed/unaltered raw values after LibRaw::unpack()

-- Alex Tutubalin @LibRaw LLC