GET /file_formats: Expose supported data types and media types

[m-mohr]

For an easier way of understanding the exposed file formats, it would be helpful to give some more information on what they offer.

Right now we just expose the "gis_data_type" (raster, vector, table, ...), but it would be great to get some more information so that clients can easily hint at potential improvements, e.g. scaling.

Interesting could be:

• Media type (e.g. image/png)
• Data type (e.g. uint8 for PNG)
• Max number of bands (e.g. 1/3/4)

[soxofaan]

As discussed at Open-EO/openeo-processes#498, explicitly linking file formats to media types seems a very valuable step here indeed, e.g. to unlock interoperability with other tools

[m-mohr]

One potential issue:

For example a GTIFF file format could have multiple media types, e.g. image/tiff; application=geotiff and image/tiff; application=geotiff; cloud-optimized=true depending on which (backend-specific) option has been set.

[soxofaan]

yes, but we could allow listing multiple possible media types per file format, right? Or do you see a problem there?