knora.json returns empty originalMimeType

[benjamingeer]

Moved from dasch-swiss/dsp-api#1268.

The problem occurs with this image:

To reproduce, start Sipi like this:

$ cd test/_test_data/
$ ../../local/bin/sipi --config config/sipi.fake-knora-test-config.lua

Upload the image:

curl -X POST -F "[email protected]" http://localhost:1024/api/upload

Sipi responds with:

{
   "2DwjMfOWysr-G7IrS9oZhK5.jp2": "http://localhost:1024/unit/_54819543-80bd2780-4c9c-11e9-8946-547d6ad3278c.jp2",
   "filename": "_54819543-80bd2780-4c9c-11e9-8946-547d6ad3278c.jp2"
}

Request knora.json:

$ curl http://localhost:1024/unit/_54819543-80bd2780-4c9c-11e9-8946-547d6ad3278c.jp2/knora.json

Sipi responds with:

{
   "width": 373,
   "height": 496,
   "originalMimeType": "",
   "originalFilename": "32_seigneux_gabriel, Fri Jan 17, 2003,  2:05:33 PM,  8C, 7566x8822,  (288+1321), 100%, bent 6 stops,   1/8 s, R22, G2, B9\r"
}

[benjamingeer]

ping

[lrosenth]

fixed Error in reading essential SIPI metadata in SipiIOJPeg.cpp (now checking for string "SIPI:")