Re: Behringer WING usb audio - cyclic xruns dependent on periods/buffers

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On Wed, 09 Dec 2020 13:16:23 +0100,
Ben Bell wrote:
> 
> [...]
> > > and learning abobut it led me to conclude that the Wing needs an entry in
> > > the quirks list in set_sync_ep_implicit_fb_quirk to properly enable it:
> > > 
> > > --- sound/usb/pcm.c.orig        2020-11-22 23:36:08.000000000 +0000
> > > +++ sound/usb/pcm.c     2020-12-05 08:40:21.639600074 +0000
> > > @@ -340,6 +345,7 @@
> > >                 ep = 0x81;
> > >                 ifnum = 3;
> > >                 goto add_sync_ep_from_ifnum;
> > > +       case USB_ID(0x1397, 0x050b): /* Behringer Wing */
> > >         case USB_ID(0x0763, 0x2080): /* M-Audio FastTrack Ultra */
> > >         case USB_ID(0x0763, 0x2081):
> > > 
> > > A week's worth of debugging and learning yielded a one line patch ;)
> > 
> > That's a interesting piece of information :)
> > 
> > Could you give lsusb -v output of the device?  With the latest patch
> > set, the driver can set up the implicit feedback mode automatically in
> > certain cases.  I'm not sure whether Behringer device follows that
> > pattern.  If not, we'd need to add the quirk manually.
> 
> I did wonder whether it was possible to automate this, as all I did
> was looked out the endpoint with the Implicit Feedback flag set.
> Fingers crossed it'll work.
> 
> Output attached.

Thanks.  Through a quick glance, this would work as is without
patching.  The implicit fb source EP is found in the next interface
with the same altset as the playback sink EP.

Let's cross fingers :)


Takashi

> 
> bjb
> 
> 
> 
> Bus 009 Device 005: ID 1397:050b BEHRINGER International GmbH 
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               2.00
>   bDeviceClass          239 Miscellaneous Device
>   bDeviceSubClass         2 
>   bDeviceProtocol         1 Interface Association
>   bMaxPacketSize0        64
>   idVendor           0x1397 BEHRINGER International GmbH
>   idProduct          0x050b 
>   bcdDevice            1.02
>   iManufacturer           1 BEHRINGER
>   iProduct                3 WING
>   iSerial                 2 WING-PP-09110504
>   bNumConfigurations      2
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength       0x0323
>     bNumInterfaces          5
>     bConfigurationValue     1
>     iConfiguration          0 
>     bmAttributes         0xc0
>       Self Powered
>     MaxPower                0mA
>     Interface Association:
>       bLength                 8
>       bDescriptorType        11
>       bFirstInterface         0
>       bInterfaceCount         3
>       bFunctionClass          1 Audio
>       bFunctionSubClass       0 
>       bFunctionProtocol      32 
>       iFunction               0 
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      1 Control Device
>       bInterfaceProtocol     32 
>       iInterface              3 WING
>       AudioControl Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdADC               2.00
>         bCategory               8
>         wTotalLength       0x01df
>         bmControls           0x00
>       AudioControl Interface Descriptor:
>         bLength                 8
>         bDescriptorType        36
>         bDescriptorSubtype     10 (CLOCK_SOURCE)
>         bClockID               41
>         bmAttributes            1 Internal fixed clock 
>         bmControls           0x07
>           Clock Frequency Control (read/write)
>           Clock Validity Control (read-only)
>         bAssocTerminal          0
>         iClockSource            9 WING Internal Clock
>       AudioControl Interface Descriptor:
>         bLength                17
>         bDescriptorType        36
>         bDescriptorSubtype      2 (INPUT_TERMINAL)
>         bTerminalID             2
>         wTerminalType      0x0101 USB Streaming
>         bAssocTerminal          0
>         bCSourceID             41
>         bNrChannels            48
>         bmChannelConfig    0x00000000
>         iChannelNames          18 Out 1
>         bmControls         0x0000
>         iTerminal               6 WING Output
>       AudioControl Interface Descriptor:
>         bLength               202
>         bDescriptorType        36
>         bDescriptorSubtype      6 (FEATURE_UNIT)
>         bUnitID                10
>         bSourceID               2
>         bmaControls(0)    0x00000000
>         bmaControls(1)    0x00000000
>         bmaControls(2)    0x00000000
>         bmaControls(3)    0x00000000
>         bmaControls(4)    0x00000000
>         bmaControls(5)    0x00000000
>         bmaControls(6)    0x00000000
>         bmaControls(7)    0x00000000
>         bmaControls(8)    0x00000000
>         bmaControls(9)    0x00000000
>         bmaControls(10)    0x00000000
>         bmaControls(11)    0x00000000
>         bmaControls(12)    0x00000000
>         bmaControls(13)    0x00000000
>         bmaControls(14)    0x00000000
>         bmaControls(15)    0x00000000
>         bmaControls(16)    0x00000000
>         bmaControls(17)    0x00000000
>         bmaControls(18)    0x00000000
>         bmaControls(19)    0x00000000
>         bmaControls(20)    0x00000000
>         bmaControls(21)    0x00000000
>         bmaControls(22)    0x00000000
>         bmaControls(23)    0x00000000
>         bmaControls(24)    0x00000000
>         bmaControls(25)    0x00000000
>         bmaControls(26)    0x00000000
>         bmaControls(27)    0x00000000
>         bmaControls(28)    0x00000000
>         bmaControls(29)    0x00000000
>         bmaControls(30)    0x00000000
>         bmaControls(31)    0x00000000
>         bmaControls(32)    0x00000000
>         bmaControls(33)    0x00000000
>         bmaControls(34)    0x00000000
>         bmaControls(35)    0x00000000
>         bmaControls(36)    0x00000000
>         bmaControls(37)    0x00000000
>         bmaControls(38)    0x00000000
>         bmaControls(39)    0x00000000
>         bmaControls(40)    0x00000000
>         bmaControls(41)    0x00000000
>         bmaControls(42)    0x00000000
>         bmaControls(43)    0x00000000
>         bmaControls(44)    0x00000000
>         bmaControls(45)    0x00000000
>         bmaControls(46)    0x00000000
>         bmaControls(47)    0x00000000
>         bmaControls(48)    0x00000000
>         iFeature                0 
>       AudioControl Interface Descriptor:
>         bLength                12
>         bDescriptorType        36
>         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
>         bTerminalID            20
>         wTerminalType      0x0301 Speaker
>         bAssocTerminal          0
>         bSourceID              10
>         bCSourceID             41
>         bmControls         0x0000
>         iTerminal               0 
>       AudioControl Interface Descriptor:
>         bLength                17
>         bDescriptorType        36
>         bDescriptorSubtype      2 (INPUT_TERMINAL)
>         bTerminalID             1
>         wTerminalType      0x0201 Microphone
>         bAssocTerminal          0
>         bCSourceID             41
>         bNrChannels            48
>         bmChannelConfig    0x00000000
>         iChannelNames          66 In 1
>         bmControls         0x0000
>         iTerminal               0 
>       AudioControl Interface Descriptor:
>         bLength               202
>         bDescriptorType        36
>         bDescriptorSubtype      6 (FEATURE_UNIT)
>         bUnitID                11
>         bSourceID               1
>         bmaControls(0)    0x00000000
>         bmaControls(1)    0x00000000
>         bmaControls(2)    0x00000000
>         bmaControls(3)    0x00000000
>         bmaControls(4)    0x00000000
>         bmaControls(5)    0x00000000
>         bmaControls(6)    0x00000000
>         bmaControls(7)    0x00000000
>         bmaControls(8)    0x00000000
>         bmaControls(9)    0x00000000
>         bmaControls(10)    0x00000000
>         bmaControls(11)    0x00000000
>         bmaControls(12)    0x00000000
>         bmaControls(13)    0x00000000
>         bmaControls(14)    0x00000000
>         bmaControls(15)    0x00000000
>         bmaControls(16)    0x00000000
>         bmaControls(17)    0x00000000
>         bmaControls(18)    0x00000000
>         bmaControls(19)    0x00000000
>         bmaControls(20)    0x00000000
>         bmaControls(21)    0x00000000
>         bmaControls(22)    0x00000000
>         bmaControls(23)    0x00000000
>         bmaControls(24)    0x00000000
>         bmaControls(25)    0x00000000
>         bmaControls(26)    0x00000000
>         bmaControls(27)    0x00000000
>         bmaControls(28)    0x00000000
>         bmaControls(29)    0x00000000
>         bmaControls(30)    0x00000000
>         bmaControls(31)    0x00000000
>         bmaControls(32)    0x00000000
>         bmaControls(33)    0x00000000
>         bmaControls(34)    0x00000000
>         bmaControls(35)    0x00000000
>         bmaControls(36)    0x00000000
>         bmaControls(37)    0x00000000
>         bmaControls(38)    0x00000000
>         bmaControls(39)    0x00000000
>         bmaControls(40)    0x00000000
>         bmaControls(41)    0x00000000
>         bmaControls(42)    0x00000000
>         bmaControls(43)    0x00000000
>         bmaControls(44)    0x00000000
>         bmaControls(45)    0x00000000
>         bmaControls(46)    0x00000000
>         bmaControls(47)    0x00000000
>         bmaControls(48)    0x00000000
>         iFeature                0 
>       AudioControl Interface Descriptor:
>         bLength                12
>         bDescriptorType        36
>         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
>         bTerminalID            22
>         wTerminalType      0x0101 USB Streaming
>         bAssocTerminal          0
>         bSourceID              11
>         bCSourceID             41
>         bmControls         0x0000
>         iTerminal               7 WING Input
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32 
>       iInterface              4 WING Output Terminal
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       1
>       bNumEndpoints           1
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32 
>       iInterface              4 WING Output Terminal
>       AudioStreaming Interface Descriptor:
>         bLength                16
>         bDescriptorType        36
>         bDescriptorSubtype      1 (AS_GENERAL)
>         bTerminalLink           2
>         bmControls           0x00
>         bFormatType             1
>         bmFormats          0x00000001
>           PCM
>         bNrChannels            48
>         bmChannelConfig    0x00000000
>         iChannelNames          18 Out 1
>       AudioStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (FORMAT_TYPE)
>         bFormatType             1 (FORMAT_TYPE_I)
>         bSubslotSize            3
>         bBitResolution         24
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x01  EP 1 OUT
>         bmAttributes            5
>           Transfer Type            Isochronous
>           Synch Type               Asynchronous
>           Usage Type               Data
>         wMaxPacketSize     0x03f0  1x 1008 bytes
>         bInterval               1
>         AudioStreaming Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (EP_GENERAL)
>           bmAttributes         0x00
>           bmControls           0x00
>           bLockDelayUnits         2 Decoded PCM samples
>           wLockDelay         0x0008
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        2
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32 
>       iInterface              5 WING Input Terminal
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        2
>       bAlternateSetting       1
>       bNumEndpoints           1
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32 
>       iInterface              5 WING Input Terminal
>       AudioStreaming Interface Descriptor:
>         bLength                16
>         bDescriptorType        36
>         bDescriptorSubtype      1 (AS_GENERAL)
>         bTerminalLink          22
>         bmControls           0x00
>         bFormatType             1
>         bmFormats          0x00000001
>           PCM
>         bNrChannels            48
>         bmChannelConfig    0x00000000
>         iChannelNames          66 In 1
>       AudioStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (FORMAT_TYPE)
>         bFormatType             1 (FORMAT_TYPE_I)
>         bSubslotSize            3
>         bBitResolution         24
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes           37
>           Transfer Type            Isochronous
>           Synch Type               Asynchronous
>           Usage Type               Implicit feedback Data
>         wMaxPacketSize     0x03f0  1x 1008 bytes
>         bInterval               1
>         AudioStreaming Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (EP_GENERAL)
>           bmAttributes         0x00
>           bmControls           0x00
>           bLockDelayUnits         2 Decoded PCM samples
>           wLockDelay         0x0008
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        3
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      1 Control Device
>       bInterfaceProtocol      0 
>       iInterface              0 
>       AudioControl Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdADC               1.00
>         wTotalLength       0x0009
>         bInCollection           1
>         baInterfaceNr(0)        1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        4
>       bAlternateSetting       0
>       bNumEndpoints           2
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      3 MIDI Streaming
>       bInterfaceProtocol      0 
>       iInterface              0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 7
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdADC               1.00
>         wTotalLength       0x00a1
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               1 Embedded
>         bJackID                 1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               2 External
>         bJackID                25
>         iJack                  11 WING MIDI DAW 1
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               1 Embedded
>         bJackID                 2
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               2 External
>         bJackID                26
>         iJack                  13 WING MIDI DAW 2
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               1 Embedded
>         bJackID                 3
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               2 External
>         bJackID                27
>         iJack                  15 WING MIDI DAW 3
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               1 Embedded
>         bJackID                 4
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               2 External
>         bJackID                28
>         iJack                  17 WING MIDI Control
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               1 Embedded
>         bJackID                 9
>         bNrInputPins            1
>         baSourceID( 0)         25
>         BaSourcePin( 0)         1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               2 External
>         bJackID                17
>         bNrInputPins            1
>         baSourceID( 0)          1
>         BaSourcePin( 0)         1
>         iJack                  10 WING MIDI DAW 1
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               1 Embedded
>         bJackID                10
>         bNrInputPins            1
>         baSourceID( 0)         26
>         BaSourcePin( 0)         1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               2 External
>         bJackID                18
>         bNrInputPins            1
>         baSourceID( 0)          2
>         BaSourcePin( 0)         1
>         iJack                  12 WING MIDI DAW 2
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               1 Embedded
>         bJackID                11
>         bNrInputPins            1
>         baSourceID( 0)         27
>         BaSourcePin( 0)         1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               2 External
>         bJackID                19
>         bNrInputPins            1
>         baSourceID( 0)          3
>         BaSourcePin( 0)         1
>         iJack                  14 WING MIDI DAW 3
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               1 Embedded
>         bJackID                12
>         bNrInputPins            1
>         baSourceID( 0)         28
>         BaSourcePin( 0)         1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               2 External
>         bJackID                20
>         bNrInputPins            1
>         baSourceID( 0)          4
>         BaSourcePin( 0)         1
>         iJack                  16 WING MIDI Control
>       Endpoint Descriptor:
>         bLength                 9
>         bDescriptorType         5
>         bEndpointAddress     0x02  EP 2 OUT
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0200  1x 512 bytes
>         bInterval               0
>         bRefresh                0
>         bSynchAddress           0
>         MIDIStreaming Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (GENERAL)
>           bNumEmbMIDIJack         4
>           baAssocJackID( 0)       1
>           baAssocJackID( 1)       2
>           baAssocJackID( 2)       3
>           baAssocJackID( 3)       4
>       Endpoint Descriptor:
>         bLength                 9
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0200  1x 512 bytes
>         bInterval               0
>         bRefresh                0
>         bSynchAddress           0
>         MIDIStreaming Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (GENERAL)
>           bNumEmbMIDIJack         4
>           baAssocJackID( 0)       9
>           baAssocJackID( 1)      10
>           baAssocJackID( 2)      11
>           baAssocJackID( 3)      12
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength       0x0323
>     bNumInterfaces          5
>     bConfigurationValue     1
>     iConfiguration          0 
>     bmAttributes         0xc0
>       Self Powered
>     MaxPower                0mA
>     Interface Association:
>       bLength                 8
>       bDescriptorType        11
>       bFirstInterface         0
>       bInterfaceCount         3
>       bFunctionClass          1 Audio
>       bFunctionSubClass       0 
>       bFunctionProtocol      32 
>       iFunction               0 
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      1 Control Device
>       bInterfaceProtocol     32 
>       iInterface              3 WING
>       AudioControl Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdADC               2.00
>         bCategory               8
>         wTotalLength       0x01df
>         bmControls           0x00
>       AudioControl Interface Descriptor:
>         bLength                 8
>         bDescriptorType        36
>         bDescriptorSubtype     10 (CLOCK_SOURCE)
>         bClockID               41
>         bmAttributes            1 Internal fixed clock 
>         bmControls           0x07
>           Clock Frequency Control (read/write)
>           Clock Validity Control (read-only)
>         bAssocTerminal          0
>         iClockSource            9 WING Internal Clock
>       AudioControl Interface Descriptor:
>         bLength                17
>         bDescriptorType        36
>         bDescriptorSubtype      2 (INPUT_TERMINAL)
>         bTerminalID             2
>         wTerminalType      0x0101 USB Streaming
>         bAssocTerminal          0
>         bCSourceID             41
>         bNrChannels            48
>         bmChannelConfig    0x00000000
>         iChannelNames          18 Out 1
>         bmControls         0x0000
>         iTerminal               6 WING Output
>       AudioControl Interface Descriptor:
>         bLength               202
>         bDescriptorType        36
>         bDescriptorSubtype      6 (FEATURE_UNIT)
>         bUnitID                10
>         bSourceID               2
>         bmaControls(0)    0x00000000
>         bmaControls(1)    0x00000000
>         bmaControls(2)    0x00000000
>         bmaControls(3)    0x00000000
>         bmaControls(4)    0x00000000
>         bmaControls(5)    0x00000000
>         bmaControls(6)    0x00000000
>         bmaControls(7)    0x00000000
>         bmaControls(8)    0x00000000
>         bmaControls(9)    0x00000000
>         bmaControls(10)    0x00000000
>         bmaControls(11)    0x00000000
>         bmaControls(12)    0x00000000
>         bmaControls(13)    0x00000000
>         bmaControls(14)    0x00000000
>         bmaControls(15)    0x00000000
>         bmaControls(16)    0x00000000
>         bmaControls(17)    0x00000000
>         bmaControls(18)    0x00000000
>         bmaControls(19)    0x00000000
>         bmaControls(20)    0x00000000
>         bmaControls(21)    0x00000000
>         bmaControls(22)    0x00000000
>         bmaControls(23)    0x00000000
>         bmaControls(24)    0x00000000
>         bmaControls(25)    0x00000000
>         bmaControls(26)    0x00000000
>         bmaControls(27)    0x00000000
>         bmaControls(28)    0x00000000
>         bmaControls(29)    0x00000000
>         bmaControls(30)    0x00000000
>         bmaControls(31)    0x00000000
>         bmaControls(32)    0x00000000
>         bmaControls(33)    0x00000000
>         bmaControls(34)    0x00000000
>         bmaControls(35)    0x00000000
>         bmaControls(36)    0x00000000
>         bmaControls(37)    0x00000000
>         bmaControls(38)    0x00000000
>         bmaControls(39)    0x00000000
>         bmaControls(40)    0x00000000
>         bmaControls(41)    0x00000000
>         bmaControls(42)    0x00000000
>         bmaControls(43)    0x00000000
>         bmaControls(44)    0x00000000
>         bmaControls(45)    0x00000000
>         bmaControls(46)    0x00000000
>         bmaControls(47)    0x00000000
>         bmaControls(48)    0x00000000
>         iFeature                0 
>       AudioControl Interface Descriptor:
>         bLength                12
>         bDescriptorType        36
>         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
>         bTerminalID            20
>         wTerminalType      0x0301 Speaker
>         bAssocTerminal          0
>         bSourceID              10
>         bCSourceID             41
>         bmControls         0x0000
>         iTerminal               0 
>       AudioControl Interface Descriptor:
>         bLength                17
>         bDescriptorType        36
>         bDescriptorSubtype      2 (INPUT_TERMINAL)
>         bTerminalID             1
>         wTerminalType      0x0201 Microphone
>         bAssocTerminal          0
>         bCSourceID             41
>         bNrChannels            48
>         bmChannelConfig    0x00000000
>         iChannelNames          66 In 1
>         bmControls         0x0000
>         iTerminal               0 
>       AudioControl Interface Descriptor:
>         bLength               202
>         bDescriptorType        36
>         bDescriptorSubtype      6 (FEATURE_UNIT)
>         bUnitID                11
>         bSourceID               1
>         bmaControls(0)    0x00000000
>         bmaControls(1)    0x00000000
>         bmaControls(2)    0x00000000
>         bmaControls(3)    0x00000000
>         bmaControls(4)    0x00000000
>         bmaControls(5)    0x00000000
>         bmaControls(6)    0x00000000
>         bmaControls(7)    0x00000000
>         bmaControls(8)    0x00000000
>         bmaControls(9)    0x00000000
>         bmaControls(10)    0x00000000
>         bmaControls(11)    0x00000000
>         bmaControls(12)    0x00000000
>         bmaControls(13)    0x00000000
>         bmaControls(14)    0x00000000
>         bmaControls(15)    0x00000000
>         bmaControls(16)    0x00000000
>         bmaControls(17)    0x00000000
>         bmaControls(18)    0x00000000
>         bmaControls(19)    0x00000000
>         bmaControls(20)    0x00000000
>         bmaControls(21)    0x00000000
>         bmaControls(22)    0x00000000
>         bmaControls(23)    0x00000000
>         bmaControls(24)    0x00000000
>         bmaControls(25)    0x00000000
>         bmaControls(26)    0x00000000
>         bmaControls(27)    0x00000000
>         bmaControls(28)    0x00000000
>         bmaControls(29)    0x00000000
>         bmaControls(30)    0x00000000
>         bmaControls(31)    0x00000000
>         bmaControls(32)    0x00000000
>         bmaControls(33)    0x00000000
>         bmaControls(34)    0x00000000
>         bmaControls(35)    0x00000000
>         bmaControls(36)    0x00000000
>         bmaControls(37)    0x00000000
>         bmaControls(38)    0x00000000
>         bmaControls(39)    0x00000000
>         bmaControls(40)    0x00000000
>         bmaControls(41)    0x00000000
>         bmaControls(42)    0x00000000
>         bmaControls(43)    0x00000000
>         bmaControls(44)    0x00000000
>         bmaControls(45)    0x00000000
>         bmaControls(46)    0x00000000
>         bmaControls(47)    0x00000000
>         bmaControls(48)    0x00000000
>         iFeature                0 
>       AudioControl Interface Descriptor:
>         bLength                12
>         bDescriptorType        36
>         bDescriptorSubtype      3 (OUTPUT_TERMINAL)
>         bTerminalID            22
>         wTerminalType      0x0101 USB Streaming
>         bAssocTerminal          0
>         bSourceID              11
>         bCSourceID             41
>         bmControls         0x0000
>         iTerminal               7 WING Input
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32 
>       iInterface              4 WING Output Terminal
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       1
>       bNumEndpoints           1
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32 
>       iInterface              4 WING Output Terminal
>       AudioStreaming Interface Descriptor:
>         bLength                16
>         bDescriptorType        36
>         bDescriptorSubtype      1 (AS_GENERAL)
>         bTerminalLink           2
>         bmControls           0x00
>         bFormatType             1
>         bmFormats          0x00000001
>           PCM
>         bNrChannels            48
>         bmChannelConfig    0x00000000
>         iChannelNames          18 Out 1
>       AudioStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (FORMAT_TYPE)
>         bFormatType             1 (FORMAT_TYPE_I)
>         bSubslotSize            3
>         bBitResolution         24
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x01  EP 1 OUT
>         bmAttributes            5
>           Transfer Type            Isochronous
>           Synch Type               Asynchronous
>           Usage Type               Data
>         wMaxPacketSize     0x03f0  1x 1008 bytes
>         bInterval               1
>         AudioStreaming Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (EP_GENERAL)
>           bmAttributes         0x00
>           bmControls           0x00
>           bLockDelayUnits         2 Decoded PCM samples
>           wLockDelay         0x0008
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        2
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32 
>       iInterface              5 WING Input Terminal
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        2
>       bAlternateSetting       1
>       bNumEndpoints           1
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      2 Streaming
>       bInterfaceProtocol     32 
>       iInterface              5 WING Input Terminal
>       AudioStreaming Interface Descriptor:
>         bLength                16
>         bDescriptorType        36
>         bDescriptorSubtype      1 (AS_GENERAL)
>         bTerminalLink          22
>         bmControls           0x00
>         bFormatType             1
>         bmFormats          0x00000001
>           PCM
>         bNrChannels            48
>         bmChannelConfig    0x00000000
>         iChannelNames          66 In 1
>       AudioStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (FORMAT_TYPE)
>         bFormatType             1 (FORMAT_TYPE_I)
>         bSubslotSize            3
>         bBitResolution         24
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x81  EP 1 IN
>         bmAttributes           37
>           Transfer Type            Isochronous
>           Synch Type               Asynchronous
>           Usage Type               Implicit feedback Data
>         wMaxPacketSize     0x03f0  1x 1008 bytes
>         bInterval               1
>         AudioStreaming Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (EP_GENERAL)
>           bmAttributes         0x00
>           bmControls           0x00
>           bLockDelayUnits         2 Decoded PCM samples
>           wLockDelay         0x0008
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        3
>       bAlternateSetting       0
>       bNumEndpoints           0
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      1 Control Device
>       bInterfaceProtocol      0 
>       iInterface              0 
>       AudioControl Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdADC               1.00
>         wTotalLength       0x0009
>         bInCollection           1
>         baInterfaceNr(0)        1
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        4
>       bAlternateSetting       0
>       bNumEndpoints           2
>       bInterfaceClass         1 Audio
>       bInterfaceSubClass      3 MIDI Streaming
>       bInterfaceProtocol      0 
>       iInterface              0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 7
>         bDescriptorType        36
>         bDescriptorSubtype      1 (HEADER)
>         bcdADC               1.00
>         wTotalLength       0x00a1
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               1 Embedded
>         bJackID                 1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               2 External
>         bJackID                25
>         iJack                  11 WING MIDI DAW 1
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               1 Embedded
>         bJackID                 2
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               2 External
>         bJackID                26
>         iJack                  13 WING MIDI DAW 2
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               1 Embedded
>         bJackID                 3
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               2 External
>         bJackID                27
>         iJack                  15 WING MIDI DAW 3
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               1 Embedded
>         bJackID                 4
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 6
>         bDescriptorType        36
>         bDescriptorSubtype      2 (MIDI_IN_JACK)
>         bJackType               2 External
>         bJackID                28
>         iJack                  17 WING MIDI Control
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               1 Embedded
>         bJackID                 9
>         bNrInputPins            1
>         baSourceID( 0)         25
>         BaSourcePin( 0)         1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               2 External
>         bJackID                17
>         bNrInputPins            1
>         baSourceID( 0)          1
>         BaSourcePin( 0)         1
>         iJack                  10 WING MIDI DAW 1
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               1 Embedded
>         bJackID                10
>         bNrInputPins            1
>         baSourceID( 0)         26
>         BaSourcePin( 0)         1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               2 External
>         bJackID                18
>         bNrInputPins            1
>         baSourceID( 0)          2
>         BaSourcePin( 0)         1
>         iJack                  12 WING MIDI DAW 2
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               1 Embedded
>         bJackID                11
>         bNrInputPins            1
>         baSourceID( 0)         27
>         BaSourcePin( 0)         1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               2 External
>         bJackID                19
>         bNrInputPins            1
>         baSourceID( 0)          3
>         BaSourcePin( 0)         1
>         iJack                  14 WING MIDI DAW 3
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               1 Embedded
>         bJackID                12
>         bNrInputPins            1
>         baSourceID( 0)         28
>         BaSourcePin( 0)         1
>         iJack                   0 
>       MIDIStreaming Interface Descriptor:
>         bLength                 9
>         bDescriptorType        36
>         bDescriptorSubtype      3 (MIDI_OUT_JACK)
>         bJackType               2 External
>         bJackID                20
>         bNrInputPins            1
>         baSourceID( 0)          4
>         BaSourcePin( 0)         1
>         iJack                  16 WING MIDI Control
>       Endpoint Descriptor:
>         bLength                 9
>         bDescriptorType         5
>         bEndpointAddress     0x02  EP 2 OUT
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0200  1x 512 bytes
>         bInterval               0
>         bRefresh                0
>         bSynchAddress           0
>         MIDIStreaming Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (GENERAL)
>           bNumEmbMIDIJack         4
>           baAssocJackID( 0)       1
>           baAssocJackID( 1)       2
>           baAssocJackID( 2)       3
>           baAssocJackID( 3)       4
>       Endpoint Descriptor:
>         bLength                 9
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0200  1x 512 bytes
>         bInterval               0
>         bRefresh                0
>         bSynchAddress           0
>         MIDIStreaming Endpoint Descriptor:
>           bLength                 8
>           bDescriptorType        37
>           bDescriptorSubtype      1 (GENERAL)
>           bNumEmbMIDIJack         4
>           baAssocJackID( 0)       9
>           baAssocJackID( 1)      10
>           baAssocJackID( 2)      11
>           baAssocJackID( 3)      12
> Device Qualifier (for other device speed):
>   bLength                10
>   bDescriptorType         6
>   bcdUSB               2.00
>   bDeviceClass            0 
>   bDeviceSubClass         0 
>   bDeviceProtocol         0 
>   bMaxPacketSize0        64
>   bNumConfigurations      1
> Device Status:     0x0001
>   Self Powered
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