[NAME_BUG]: GTB and MIDI 1 Port Names of 'DTX-MULTI 12' not correctly set when using KS, but are fine with KSA

[sat-okada]

Windows Version

27823.rs_prerelease.250321-1420

Service Installation Method

Other (please indicate below)

Location

App using Windows MIDI Services SDK (MIDI 2.0)

Device Make and Model

YAMAHA DTX-MULTI 12

Name(s) you saw

YAMAHA DTX-MULTI 12/YAMAHA DTX-MULTI 12/YAMAHA DTX-MULTI 12

Name(s) you expected

YAMAHA DTX-MULTI 12/MIDIIN2/MIDIIN3

MIDI KS Info Output

MIDI endpoint properties

Additional notes

SDK Version : 1.0.3-preview-12.250406-2129 (from Discord)

The output results from USBAUDIO.sys is here.

[Psychlist1972]

Thanks. I'll take a look at this. MIDIIN2 (YAMAHA DTX-MULTI 12) is 29 characters. We're allowed 32 total in WinMM including terminating null, so I may be reserving too many at some point in the code.

[m-komo]

This seems to occurs not only on specific product (YAMAHA DTX), but also on MIDI 1.0 products which have multiple MIDI ports.

The attached firmware (UUT_ZOA_104(no String).uf2) can be used to reproduce this on the ProtoZOA.
If the device is running with the USB MIDI 2.0 driver, all WinMM ports have same name and all GTB names are empty.

Followings are output of 'midiksinfo', 'midi1enum' and 'midi ep properties':

• ZOA-104_properties_KS.txt
  This is the case of using KS (USBMidi2.sys). All WinMM ports have same name "ZOA-104" and all GTB names are empty.

• ZOA-104_properties_KSA.txt
  This is the case of using KSA (USBAUDIO.sys). No probrem.

I'm not sure, but it seems to be related to #611.