Being unfamilar in detail re MAC OS/Emulators, perhaps the following will be helpful.
SNS-HDR Lite is a Windows Command Line program. Program options and input file or files need to be specified.
The following Windows 'cmd.exe' Commannd Line:...
C:\Program Files\SNS-HDR Lite>SNS-HDR.exe -da -dd -srgb -n1 -x1 -default -tiff16 "C:\2014 Photos\IMG_9432.CR2"
...will execute a single 'IMG_9432.CR2' raw file located in the '2014 Photos' folder; converting it to a full-sized, sRGB, 16 bit tiff image file where alignment and deghosting were dis-abled; "-n1" raw noise reduction applied; and "-default" tone-mapping Preset applied. An output file named 'IMG_9432-HDR(1)_Default' will be saved to the '2014 Photos' folder.
Note: if there is more than one input image file, all images will be blended after conversion from raw, then tone-mapped at the specified Preset. Input image files need not be raw files but can also be all jpegs or all tiffs located in the source folder. With multiple input images, perhaps alignment and deghosting should not be dis-abled.
There is also a SNS-HDR Lite GUI that could potentially be used with your emulator; to be down-loaded here but has not been updated to include the raw noise reduction options when I last checked:
http://www.sns-hdr.com/files/SNS-HDR_Lite_GUI.zip...den...