Ability to extract Previews as BufferedImage

[gwegner]

I would like to use this wrapper for extracting JPG previews from RAW files and use the stay-open feature to increase performance:

-if $jpgfromraw -b -overwrite_original -jpgfromraw -w "" + jpgname + "" -execute -if $previewimage -b -overwrite_original -previewimage -w "" + jpgname +"";

it would be best to be able to get the result directly as bufferedImage or bytestream without being forced to let exiftool write an intermediate jpg (performance)

[boardhead]

Note that the exiftool -X and -php outputs may both be used to transfer binary data when the -b option is added. For a general interface, I would recommend using -X since it has the ability to provide additional information that isn't available with any of the other output formats.

• Phil