user_mul is used only in user_mul is used only in dcraw_process(). For other parameters that may affect unpack() please read API notes: http://www.libraw.org/docs/API-notes-eng.html#imgdata_params -- Alex Tutubalin @LibRaw LLC reply
user_mul is used only in dcraw_process().
For other parameters that may affect unpack() please read API notes: http://www.libraw.org/docs/API-notes-eng.html#imgdata_params