ENCODING_TYPE support for PDS3 images

[Kelvinrr]

Expected behavior and actual behavior.

GDAL fails to open a Kaguya Terrain Camera PDS3 image. The problem being that these images have an ENCODING_TYPE key in the label which GDAL doesn't currently support,

(ale) igswzawglt0091:ISIS3 kelvin$ gdalinfo ~/repos/ale/images/TC1W2B0_01_00366S495E1640.img
ERROR 4: *** PDS image file has an ENCODING_TYPE parameter:
*** gdal pds driver does not support compressed image types
found: (DCT_DECOMPRESSED)


gdalinfo failed - unable to open '/Users/kelvin/repos/ale/images/TC1W2B0_01_00366S495E1640.img'.

Steps to reproduce the problem.

TC1W2B0_01_00366S495E1640.zip

Download and unzip the above example. Simply run:

gdalinfo TC1W2B0_01_00366S495E1640.img

Operating system

MacOS 10.13.6

GDAL version and provenance

gdal 2.4.1 from conda-forge, build py36h7eb7563_1

[Kelvinrr]

@thareUSGS Do you have any input on how to get this fix in?

[rouault]

It turns out that just allowing this value and going on leads to apparent correct behaviour.