uaudio0: Record: 8000 Hz, 1 ch, 8-bit U-LE PCM format, 2x8ms buffer.

pcm1: <USB audio> at ? kld snd_uaudio (0p:0v/1r:1v)
        snddev flags=0x2e7<SIMPLEX,AUTOVCHAN,SOFTPCMVOL,BUSY,MPSAFE,REGISTERED,VPC>
        [pcm1:record:dsp1.r0]: spd 8000, fmt 0x00200010/0x00100008, flags 0x00002100, 0x00000047
        interrupts 0, overruns 0, feed 0, hfree 128, sfree 512 [b:128/64/2|bs:512/256/2]
        channel flags=0x2100<BUSY,HAS_VCHAN>
        {hardware} -> feeder_root(0x00100008) -> feeder_format(0x00100008 -> 0x00100010) -> feeder_matrix(1.0 -> 2.0) -> feeder_mixer(0x00200010) -> {userland}
        pcm1:record:dsp1.r0[pcm1:virtual:dsp1.vr0]: spd 8000, fmt 0x00100008, flags 0x10000000, 0x00000000
        interrupts 0, overruns 0, feed 0, hfree 0, sfree 0 [b:0/0/0|bs:0/0/0]
        channel flags=0x10000000<VIRTUAL>
        {hardware} -> feeder_root(0x00000000) -> {userland}



ugen3.2: <USB 2.0 Video Capture Controller Syntek Semiconductor> at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON
ugen3.2.1: uaudio0: <USB Audio Interface>

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0200 
  bDeviceClass = 0x0000 
  bDeviceSubClass = 0x0000 
  bDeviceProtocol = 0x0000 
  bMaxPacketSize0 = 0x0040 
  idVendor = 0x05e1 
  idProduct = 0x0408 
  bcdDevice = 0x0005 
  iManufacturer = 0x0001  <Syntek Semiconductor>
  iProduct = 0x0002  <USB 2.0 Video Capture Controller>
  iSerialNumber = 0x0000  <no string>
  bNumConfigurations = 0x0001 


set_config 255    set_config 0	dump_all_config_desc	power_off	power_on
ugen3.2: <USB 2.0 Video Capture Controller Syntek Semiconductor> at usbus3, cfg=0 md=HOST spd=HIGH (480Mbps) pwr=ON


 Configuration index 0

    bLength = 0x0009 
    bDescriptorType = 0x0002 
    wTotalLength = 0x00fb 
    bNumInterfaces = 0x0003 
    bConfigurationValue = 0x0001 
    iConfiguration = 0x0000  <no string>
    bmAttributes = 0x0080 
    bMaxPower = 0x00fa 

    Interface 0
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00ff 
      bInterfaceSubClass = 0x00ff 
      bInterfaceProtocol = 0x00ff 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0003  <INTERRUPT>
        wMaxPacketSize = 0x0000 
        bInterval = 0x0005 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0000 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 0 Alt 1
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0001 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00ff 
      bInterfaceSubClass = 0x00ff 
      bInterfaceProtocol = 0x00ff 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0003  <INTERRUPT>
        wMaxPacketSize = 0x0002 
        bInterval = 0x0005 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0300 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 0 Alt 2
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0002 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00ff 
      bInterfaceSubClass = 0x00ff 
      bInterfaceProtocol = 0x00ff 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0003  <INTERRUPT>
        wMaxPacketSize = 0x0002 
        bInterval = 0x0005 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x03fc 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 0 Alt 3
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0003 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00ff 
      bInterfaceSubClass = 0x00ff 
      bInterfaceProtocol = 0x00ff 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0003  <INTERRUPT>
        wMaxPacketSize = 0x0002 
        bInterval = 0x0005 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0400 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 0 Alt 4
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0004 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00ff 
      bInterfaceSubClass = 0x00ff 
      bInterfaceProtocol = 0x00ff 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0003  <INTERRUPT>
        wMaxPacketSize = 0x0002 
        bInterval = 0x0005 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x0c00 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 0 Alt 5
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0005 
      bNumEndpoints = 0x0002 
      bInterfaceClass = 0x00ff 
      bInterfaceSubClass = 0x00ff 
      bInterfaceProtocol = 0x00ff 
      iInterface = 0x0000  <no string>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0003  <INTERRUPT>
        wMaxPacketSize = 0x0002 
        bInterval = 0x0005 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

     Endpoint 1
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0001  <ISOCHRONOUS>
        wMaxPacketSize = 0x1400 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 1
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0001 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0000 
      bInterfaceClass = 0x0001 
      bInterfaceSubClass = 0x0001 
      bInterfaceProtocol = 0x0000 
      iInterface = 0x000b  <USB Audio Interface>

      Additional Descriptor

      bLength = 0x09
      bDescriptorType = 0x24
      bDescriptorSubType = 0x01
       RAW dump: 
       0x00 | 0x09, 0x24, 0x01, 0x00, 0x01, 0x26, 0x00, 0x01, 
       0x08 | 0x02

      Additional Descriptor

      bLength = 0x0c
      bDescriptorType = 0x24
      bDescriptorSubType = 0x02
       RAW dump: 
       0x00 | 0x0c, 0x24, 0x02, 0x01, 0x01, 0x02, 0x00, 0x01, 
       0x08 | 0x00, 0x00, 0x00, 0x00


      Additional Descriptor

      bLength = 0x09
      bDescriptorType = 0x24
      bDescriptorSubType = 0x03
       RAW dump: 
       0x00 | 0x09, 0x24, 0x03, 0x02, 0x01, 0x01, 0x00, 0x03, 
       0x08 | 0x00

      Additional Descriptor

      bLength = 0x08
      bDescriptorType = 0x24
      bDescriptorSubType = 0x06
       RAW dump: 
       0x00 | 0x08, 0x24, 0x06, 0x03, 0x01, 0x01, 0x01, 0x00



    Interface 2
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0002 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0001 
      bInterfaceClass = 0x0001 
      bInterfaceSubClass = 0x0002 
      bInterfaceProtocol = 0x0000 
      iInterface = 0x000b  <USB Audio Interface>

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0084  <IN>
        bmAttributes = 0x0005  <ASYNC-ISOCHRONOUS>
        wMaxPacketSize = 0x0000 
        bInterval = 0x0001 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 


    Interface 2 Alt 1
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0002 
      bAlternateSetting = 0x0001 
      bNumEndpoints = 0x0001 
      bInterfaceClass = 0x0001 
      bInterfaceSubClass = 0x0002 
      bInterfaceProtocol = 0x0000 
      iInterface = 0x000b  <USB Audio Interface>

      Additional Descriptor

      bLength = 0x07
      bDescriptorType = 0x24
      bDescriptorSubType = 0x01
       RAW dump: 
       0x00 | 0x07, 0x24, 0x01, 0x02, 0x01, 0x02, 0x00


      Additional Descriptor

      bLength = 0x0b
      bDescriptorType = 0x24
      bDescriptorSubType = 0x02
       RAW dump: 
       0x00 | 0x0b, 0x24, 0x02, 0x01, 0x01, 0x01, 0x08, 0x01, 
       0x08 | 0x40, 0x1f, 0x00


     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0084  <IN>
        bmAttributes = 0x0005  <ASYNC-ISOCHRONOUS>
        wMaxPacketSize = 0x0009 
        bInterval = 0x0004 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

      Additional Descriptor

      bLength = 0x07
      bDescriptorType = 0x25
      bDescriptorSubType = 0x01
       RAW dump: 
       0x00 | 0x07, 0x25, 0x01, 0x00, 0x00, 0x00, 0x00