[Bug 51341] New: incomplete Audio USB class compliant driver emulation / passthrough

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51341

Bug ID: 51341
           Summary: incomplete Audio USB class compliant driver emulation
                    / passthrough
           Product: Wine
           Version: 6.11
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P2
         Component: usb
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Story goes like this:

Focusrite is currently the most popular manufacturer of home studio sound
interfaces.
has different products, Thunderbolt, USB, FireWire.
but does Not care about Linux, 
Focusrite support is Not interested in Linux.

https://support.focusrite.com/hc/en-gb/articles/208530735-Is-my-Focusrite-Pr...

USB products (Scarlett and Clarett USB) are Class Compliant USB Devices,
and sound in Linux.
Kubuntu 20.10 Groovy Gorilla.
also work in older OSX like Mavericks 10.9.5

alsamixer in terminal, works, but has No options.
https://www.alsa-project.org/wiki/Matrix:Vendor-Focusrite

Focusrite interfaces have lots of settings/configurations/routings for the
built-in DSP, that can only be changed with the Focusrite Software.

Focusrite v3.6.0 software works in PlayOnLinux and Wine 6.10 - 6.11,
works,
BUT.....
Does Not detect the USB interface, and cannot change anything.

Because: Wine requires a USB dummy / USB passthrough / USB emulator /
translator driver
to communicate with the interface.

Wine needs to emulate the Focusrite windows USB driver, HW ID address, name,
version, 
and route signals to Linux USB class compliant driver.
for the Focusrite software to see & control the interface.

Focusrite Clarett 8pre usb, 
Scarlett 18i20 mk2 mk3
 are almost the same,
have different exterior case, analog circuit components, different DAC
but same drivers, same software that detects the different Firmware & serial
numbers.
to add or remove editable / controllable settings.

https://fael-downloads-prod.focusrite.com/customer/prod/s3fs-public/download...

https://customer.focusrite.com/en/support/downloads?brand=Focusrite&prod...
https://customer.focusrite.com/en/support/downloads?brand=Focusrite&prod...
https://customer.focusrite.com/en/support/downloads?brand=Focusrite&prod...

Asking ALSA to make a similar control software would require open source code
released from Focusrite,
thats why i think emulating the driver side is more easy, than making the whole
software in Linux without access to source code.

[Bug 51341] incomplete Audio USB class compliant driver emulation / passthrough

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51341

--- Comment #1 from JuanPabloCuervo  ---
Focusrite is USB Class compliant = sounds ok without drivers, VLC, Firefox,
etc..,

but to be controllable by other softwares like ASIO or Focusrite Control v3.6.0 
requires to install additional USB drivers.

Wine would also require to emulate ASIO drivers to be fully compatible with All
Windows audio software... Cubase, ProTools, etc...

there is a software called ASIO4ALL that emulates ASIO with standard DirectX or
WDM drivers..
but...
the good think is that can link 2 different interfaces.
but seems to have more latency,
and that is bad for audio recording.

https://www.asio4all.org/

[Bug 51341] incomplete Audio USB class compliant driver emulation / passthrough

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51341

--- Comment #2 from JuanPabloCuervo  ---
https://forum.vb-audio.com/viewtopic.php?t=1204

http://www.dawbench.com/audio-int-lowlatency.htm

there are several DPC latency & system timers checkers / testers:
https://sourceforge.net/p/clonezilla/discussion/Open_discussion/thread/739b0...

Low Latency is key for Digital Audio Workstations "DAW".

[Bug 51341] Focusrite audio device control software does not work

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51341

Zebediah Figura  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]
           Severity|blocker                     |normal
            Summary|incomplete Audio USB class  |Focusrite audio device
                   |compliant driver emulation  |control software does not
                   |/ passthrough               |work

--- Comment #3 from Zebediah Figura  ---
We do in fact already have initial support for USB drivers. That said, while
it's probably possible to make the Windows driver and control software work, it
can't be used while ALSA is using the device, i.e. you'll need to detach the
host kernel driver first. It's not clear to me whether that's a blocker or not.

[Bug 51341] Focusrite audio device control software does not work

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51341

SusanCragin  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]