[Bug 39048] New: MIDI Clock Messages are Corrupted Between Wine and ALSA

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=39048

            Bug ID: 39048
           Summary: MIDI Clock Messages are Corrupted Between Wine and
                    ALSA
           Product: Wine
           Version: 1.7.43
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winealsa.drv
          Assignee: wine-bugs at winehq.org
          Reporter: josh.sarro at gmail.com
      Distribution: ---

When using an app running over Wine, MIDI Clock messages sent from the app to
native Linux applications using ALSA MIDI are corrupted and not recognized as
MIDI Clock messages.

To Reproduce:

1. Start a native Linux application that supports MIDI Clock via ALSA MIDI.

In this example, I'll use Renoise, but I've also tested with other software,
for example gmidimonitor. In Renoise open Edit -> Preferences -> MIDI and under
MIDI Clock Slave select In device "Renoise MIDI In Sync".

2. Start MIDI Clock enabled Windows app using Wine and enable MIDI Clock output

In this example I'll use Reaper, but I've also tested with MIDIClock (a simple
windows application that sends MIDIClock messages). Go to Options -> Preference
(CTRL-P). In the left pane, under the heading "Audio" select "MIDI Devices". In
the bottom right pain, right click on "Renoise MIDI In Sync". Click "Enable
Output". Again, right click on "Renoise MIDI In Sync". Click "Send Clock/SPP to
Output". Click OK

3. Run the MIDI Clock

In REAPER press play or space bar

Expected Results:

Native Linux app receives and responds to MIDI Clock

Actual Results:

Native Linux app does not recognize messages as MIDI Clock

Notes:

Another illustrative example is to use gmidimonitor instead of Renoise as the
native Linux app. Start it in alsa mode (--alsa). In Reaper, perform the same
steps listed above, but select gmidimonitor's port. When Reaper is playing
there is a repeated message: "Sysex with size 1: F8", but connected to a native
Linux application with MIDI Clock out (such as Renoise), the message is: "MIDI
Real time clock message". To rule out a bug in Reaper, I tested the same
scenario with a Windows application called "MIDIClock". It's available as a
free download from Download.com.

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