[SOLVED] Using HIDAPI, how can you query the raw report descriptor?

Using HIDAPI, how can you query the raw report descriptor?

I'd like to deconstruct the raw reports received from the hid_read function of hidapi.

As I understand, this can be achieved using the information from the device's report descriptors. But when trying to query for those descriptors, I get lost somewhere between the HID Spec and using the methods available in hidapi.

I would love to see a concrete C or node-hidapi based example that queries and enumerates all the report descriptors for a device — perhaps a mouse to keep things simple?

Solution

I asked Alan Ott by email about this, and he responded with no as follows:

HIDAPI does not provide functions for getting or parsing the report descriptor. Since HIDAPI is for talking to a custom devices, these devices will likely contain all or mostly vendor-defined report items anyway.