[BUG] MME MIDI app cannot receive SysEx messages through a MidiSrv enumerated port.

[m-komo]

Describe the bug
A legacy MIDI app which uses MME MIDI API cannot receive System Exclusive messages through a MidiSrv enumerated port.

To Reproduce

1. Load the attached firmware to the ProtoZOA.
2. Make sure the USB MIDI 2.0 driver (UsbMidi2.sys) is loaded.
3. Open midi.exe and monitor the ProtoZOA.
4. Open the Pocket MIDI 64bit(MME MIDI app) and choose MidiSrv enumerated ports for Input and Output.
   Input: AmeNote ProtoZOA I-1
   Output: AmeNote ProtoZOA O-1
5. Open the MIDI In Monitor and the MIDI Out Monitor windows.
6. From the "Views" menu, open "System Exclusive" window.
7. In the System Exclusive window, type "F0 01 F7" as a message to be sent.
   
8. Click "Transmit" to send messages.

In the MIDI Out Monitor of the Pocket MIDI shows the sent message as below:

The midi.exe monitor shows the received message as below:

However, no message is received by the Pocket MIDI.

Expected behavior
MME MIDI apps can receive SysEx messages through MidiSrv enumerated ports.

Screenshots

Installer Name or Version
Windows.MIDI.Services.In-Box.Service.-.1.0.1-preview.7.24305.1438-x64.exe

Desktop (please complete the following information):

• OS: Windows 11 24H2 build 26120.2213 (Insider Dev channel)

Device information, if this is with an external MIDI device:

• ProtoZOA running with the attached firmware.
  UUT_USB_MIDI_ECHO_NO_PRINTF.uf2.zip

• USB MIDI 2.0 class driver (USBMIDI2_10.0.1.7.x64.zip)

Application Information

• MORSON Pocket MIDI (64bit MME MIDI app)
  https://www.morson.jp/pocketmidi-webpage/

[sat-okada]

A similar problem occurred.

1.Install UUT_USB_MIDI_ECHO_NO_PRINTF.uf2 on ProtoZoA
2.Driver uses UsbMidi2.
3.Start up two consoles, One is a monitor.

midi endpoint monitor --verbose

Send on the other

midi endpoint send-message 0x40901122 0x33445566 -i --count 10 --delay 1

4.Check the monitor.
5.Start up pocketMIDI. Select protoZoA in Input port.
6.Once more on the sending side.

midi endpoint send-message 0x40901122 0x33445566 -i --count 10 --delay 1

7.Check monitor on pocketMIDI. So far, so good.

8.Sending SysEx from the sender.

midi endpoint send-message-file -p 0 sysex1.txt

9.midi.exe monitor is receiving.
But, nothing is displayed on the pocketMIDI monitors.

10.Send NoteOn from the sender again.

midi endpoint send-message 0x40901122 0x33445566 -i --count 10 --delay 1

11.As before, midi.exe monitor is receiving.
But, nothing is displayed on the pocketMIDI monitors.
12.Quit pocketMIDI and start up again, NoteOn accepts as before.

The PC is in the following condition.
・OS: Windows 11 Pro Insider Preview Build 27729.rs_prerelease.241011-1428
・Windows.MIDI.Services.In-Box.Service.-.1.0.1-preview.7.24305.1438-x64.exe
・Windows.MIDI.Services.Tools.and.SDKs.1.0.1-preview.7.24305.1438-x64.exe
・USB MIDI 2.0 class driver (USBMIDI2_10.0.1.7.x64.zip)

[Psychlist1972]

@m-komo @sat-okada please try this with the latest DP9 release

[m-komo]

@Psychlist1972
I tried this.
The issue persists with the DP9 NAMM Preview 2.

[Psychlist1972]

@Psychlist1972 I tried this. The issue persists with the DP9 NAMM Preview 2.

Thank you for confirming.

[Psychlist1972]

A similar problem occurred.

1.Install UUT_USB_MIDI_ECHO_NO_PRINTF.uf2 on ProtoZoA 2.Driver uses UsbMidi2. 3.Start up two consoles, One is a monitor.

midi endpoint monitor --verbose

Send on the other

midi endpoint send-message 0x40901122 0x33445566 -i --count 10 --delay 1

4.Check the monitor. 5.Start up pocketMIDI. Select protoZoA in Input port. 6.Once more on the sending side.

midi endpoint send-message 0x40901122 0x33445566 -i --count 10 --delay 1

7.Check monitor on pocketMIDI. So far, so good.

8.Sending SysEx from the sender.

midi endpoint send-message-file -p 0 sysex1.txt

9.midi.exe monitor is receiving. But, nothing is displayed on the pocketMIDI monitors.

10.Send NoteOn from the sender again.

midi endpoint send-message 0x40901122 0x33445566 -i --count 10 --delay 1

11.As before, midi.exe monitor is receiving. But, nothing is displayed on the pocketMIDI monitors. 12.Quit pocketMIDI and start up again, NoteOn accepts as before.

The PC is in the following condition. ・OS: Windows 11 Pro Insider Preview Build 27729.rs_prerelease.241011-1428 ・Windows.MIDI.Services.In-Box.Service.-.1.0.1-preview.7.24305.1438-x64.exe ・Windows.MIDI.Services.Tools.and.SDKs.1.0.1-preview.7.24305.1438-x64.exe ・USB MIDI 2.0 class driver (USBMIDI2_10.0.1.7.x64.zip)

I have validated that this same scenario behaves as described when I have a simple MIDI 1.0 USB->DIN interface attached, and it has the in and out wired together. The SysEx messages do not appear to get through to the WinMM / MME API, or else pocket midi is failing to receive them.

[Psychlist1972]

Related to #517

[Psychlist1972]

I tried this with a regular MIDI 1.0 loopback device (not the protozoa) and this is now fixed. I don't expect the behavior to be any different with the protozoa.