ImageEN1.IO.Params.DefaultICCProfile.LoadFromFile('...path to AdobeRGB1998.icc');
ImageEN1.IO.LoadFromStreamJpeg(RAWPreviewJPEGStream);

var
  icc:TIEICC;
begin
  ImageEnView1.IO.LoadFromFile('input.jpg');

  // setup destination color profile
  icc := TIEICC.Create();
  icc.LoadFromFile('AdobeRGB1998.icc');
 
  // setup source color profile (sRGB?)
  ImageEnView1.IO.Params.InputICCProfile.Assign_sRGBProfile();

  // transform
  ImageEnView1.IO.Params.InputICCProfile.ConvertBitmap(ImageEnView1.IEBitmap, ie24RGB, icc);
  icc.Free();
end;