Re^2: What can I do with an “IOUSBHostDevice”?

It seems like USB::LibUSB requires an installation to use. Is there a way to do it without installing anything? I found the properties of an AppleUSBAudioStream. Would it be possible to directly access the port where the data is stored? --here is the beginning of the IOUSBHostDevice, found using the terminal command `ioreg -r -c IOUSBHostDevice -l`

+-o Scarlett Solo USB@14200000  <class IOUSBHostDevice, id 0x100002be5
+, registered, matched, active, busy 0 (3820 ms), retain 28>
  | {
  |   "sessionID" = 107384098679337
  |   "USBSpeed" = 3
  |   "IOServiceLegacyMatchingRegistryID" = 4294978535
  |   "idProduct" = 33285
  |   "bDeviceClass" = 239
  |   "IOPowerManagement" = {"PowerOverrideOn"=Yes,"CapabilityFlags"=3
+2768,"MaxPowerState"=2,"DevicePowerState"=2,"ChildrenPowerState"=2,"D
+riverPowerState"=0,"CurrentPowerState"=2}
  |   "bcdDevice" = 1052
  |   "USB Product Name" = "Scarlett Solo USB"
  |   "AppleUSBAlternateServiceRegistryID" = 4294978535
  |   "locationID" = 337641472
  |   "bDeviceSubClass" = 2
  |   "kUSBCurrentConfiguration" = 1
  |   "IOCFPlugInTypes" = {"9dc7b780-9ec0-11d4-a54f-000a27052861"="IOU
+SBFamily.kext/Contents/PlugIns/IOUSBLib.bundle"}
  |   "bDeviceProtocol" = 1
  |   "USBPortType" = 0
  |   "USB Vendor Name" = "Focusrite"
  |   "idVendor" = 4661
  |   "IOGeneralInterest" = "IOCommand is not serializable"
  |   "kUSBVendorString" = "Focusrite"
  |   "IOClassNameOverride" = "IOUSBDevice"
  | }
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-------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------- IOUSBHostInterface

+-o Scarlett Solo USB@0  <class IOUSBHostInterface, id 0x100002bf5, re
+gistered, matched, active, busy 0 (3813 ms), retain 8>
  | {
  |   "USBPortType" = 0
  |   "IOCFPlugInTypes" = {"2d9786c6-9ef3-11d4-ad51-000a27052861"="IOU
+SBFamily.kext/Contents/PlugIns/IOUSBLib.bundle"}
  |   "bcdDevice" = 1052
  |   "USBSpeed" = 3
  |   "idProduct" = 33285
  |   "bConfigurationValue" = 1
  |   "bInterfaceSubClass" = 1
  |   "locationID" = 337641472
  |   "IOGeneralInterest" = "IOCommand is not serializable"
  |   "IOServiceLegacyMatchingRegistryID" = 4294978553
  |   "IOClassNameOverride" = "IOUSBInterface"
  |   "AppleUSBAlternateServiceRegistryID" = 4294978553
  |   "idVendor" = 4661
  |   "bInterfaceProtocol" = 32
  |   "bAlternateSetting" = 0
  |   "bInterfaceNumber" = 0
  |   "bInterfaceClass" = 1
  | }
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+-o AppleUSBAudioDevice  <class AppleUSBAudioDevice, id 0x100002c0f, r
+egistered, matched, active, busy 0 (1 ms), retain 14>
  | {
  |   "IOClass" = "AppleUSBAudioDevice"
  |   "CFBundleIdentifier" = "com.apple.driver.AppleUSBAudio"
  |   "IOProviderClass" = "IOUSBHostInterface"
  |   "IOAudioDeviceName" = "Scarlett Solo USB"
  |   "IOPowerManagement" = {"CapabilityFlags"=32768,"CurrentPowerStat
+e"=1,"MaxPowerState"=1,"DriverPowerState"=1}
  |   "IOAudioDeviceModelID" = "Scarlett Solo USB:1235:8205"
  |   "IOProbeScore" = 50000
  |   "bInterfaceSubClass" = 1
  |   "IOMatchCategory" = "IODefaultMatchCategory"
  |   "IOAudioDeviceManufacturerName" = "Focusrite"
  |   "IOAudioDeviceCanBeDefaults" = 7
  |   "Clock Domain" = 0
  |   "bInterfaceClass" = 1
  |   "IOAudioDeviceTransportType" = 1970496032
  | }
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+-o AppleUSBAudioEngine  <class AppleUSBAudioEngine, id 0x100002c11, r
+egistered, matched, active, busy 0 (1 ms), retain 15>
  | {
  |   "IOAudioStreamSampleFormatByteOrder" = "Little Endian"
  |   "IOAudioEngineClockIsStable" = Yes
  |   "IOAudioEngineInputSampleOffset" = 241
  |   "idProduct" = 33285
  |   "IOGeneralInterest" = "IOCommand is not serializable"
  |   "IOAudioEngineInputSampleLatency" = 192
  |   "IOAudioEngineState" = 0
  |   "IOAudioEngineDescription" = "Scarlett Solo USB"
  |   "IOAudioEngineNumSampleFramesPerBuffer" = 49152
  |   "IOAudioEngineGlobalUniqueID" = "AppleUSBAudioEngine:Focusrite:S
+carlett Solo USB:14200000:2,1"
  |   "idVendor" = 4661
  |   "IOAudioEngineClockDomain" = 272910464
  |   "IOAudioSampleRate" = {"IOAudioSampleRateWholeNumber"=192000,"IO
+AudioSampleRateFraction"=0}
  |   "IOAudioEngineFlavor" = 1
  |   "IOAudioEngineChannelNames" = {"OutputChannel2"="Output 2","Outp
+utChannel1"="Output 1","InputChannel1"="Input 1","InputChannel2"="Inp
+ut 2"}
  |   "IOAudioEngineSampleOffset" = 193
  |   "IOAudioEngineOutputSampleLatency" = 192
  | }
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+-o AppleUSBAudioStream  <class AppleUSBAudioStream, id 0x100002c12, r
+egistered, matched, active, busy 0 (0 ms), retain 9>
  |   {
  |     "IOAudioStreamNumClients" = 0
  |     "IOAudioStreamSampleFormatByteOrder" = "Little Endian"
  |     "IOAudioStreamStartingChannelNumber" = 1
  |     "idProduct" = 33285
  |     "IOAudioStreamAvailable" = 1
  |     "IOAudioStreamFormat" = {"IOAudioStreamAlignment"=0,"IOAudioSt
+reamNumericRepresentation"=1936289396,"IOAudioStreamIsMixable"=1,"IOA
+udioStreamFormatFlags"=0,"IOAudioStreamByteOrder"=1,"IOAudioStreamBit
+Depth"=24,"IOAudioStreamSampleFormat"=1819304813,"IOAudioStreamDriver
+Tag"=131073,"IOAudioStreamNumChannels"=2,"IOAudioStreamBytesPerPacket
+"=8,"IOAudioStreamBitWidth"=32,"IOAudioStreamFramesPerPacket"=1}
  |     "IOAudioStreamDirection" = 1
  |     "IOAudioStreamAvailableFormats" = ({"IOAudioStreamMaximumSampl
+eRate"={"IOAudioSampleRateWholeNumber"=44100,"IOAudioSampleRateFracti
+on"=0},"IOAudioStreamAlignment"=0,"IOAudioStreamNumericRepresentation
+"=1936289396,"IOAudioStreamIsMixable"=1,"IOAudioStreamFormatFlags"=0,
+"IOAudioStreamByteOrder"=1,"IOAudioStreamBitDepth"=24,"IOAudioStreamS
+ampleFormat"=1819304813,"IOAudioStreamDriverTag"=131073,"IOAudioStrea
+mNumChannels"=2,"IOAudioStreamBytesPerPacket"=8,"IOAudioStreamBitWidt
+h"=32,"IOAudioStreamFramesPerPacket"=1,"IOAudioStreamMinimumSampleRat
+e"={"IOAudioSampleRateWholeNumber"=44100,"IOAudioSampleRateFraction"=
+0}},{"IOAudioStreamMaximumSampleRate"={"IOAudioSampleRateWholeNumber"
+=44100,"IOAudioSampleRateFraction"=0},"IOAudioStreamAlignment"=0,"IOA
+udioStreamNumericRepresentation"=1936289396,"IOAudioStreamIsMixable"=
+0,"IOAudioStreamFormatFlags"=0,"IOAudioStreamByteOrder"=1,"IOAudioStr
+eamBitDepth"=24,"IOAudioStreamSampleFormat"=1819304813,"IOAudioStream
+DriverTag"=131073,"IOAudioStreamNumChannels"=2,"IOAudioStreamBytesPer
+Packet"=8,"IOAudioStreamBitWidth"=32,"IOAudioStreamFramesPerPacket"=1
+,"IOAudioStreamMinimumSampleRate"={"IOAudioSampleRateWholeNumber"=441
+00,"IOAudioSampleRateFraction"=0}},{"IOAudioStreamMaximumSampleRate"=
+{"IOAudioSampleRateWholeNumber"=48000,"IOAudioSampleRateFraction"=0},
+"IOAudioStreamAlignment"=0,"IOAudioStreamNumericRepresentation"=19362
+89396,"IOAudioStreamIsMixable"=1,"IOAudioStreamFormatFlags"=0,"IOAudi
+oStreamByteOrder"=1,"IOAudioStreamBitDepth"=24,"IOAudioStreamSampleFo
+rmat"=1819304813,"IOAudioStreamDriverTag"=131073,"IOAudioStreamNumCha
+nnels"=2,"IOAudioStreamBytesPerPacket"=8,"IOAudioStreamBitWidth"=32,"
+IOAudioStreamFramesPerPacket"=1,"IOAudioStreamMinimumSampleRate"={"IO
+AudioSampleRateWholeNumber"=48000,"IOAudioSampleRateFraction"=0}},{"I
+OAudioStreamMaximumSampleRate"={"IOAudioSampleRateWholeNumber"=48000,
+"IOAudioSampleRateFraction"=0},"IOAudioStreamAlignment"=0,"IOAudioStr
+eamNumericRepresentation"=1936289396,"IOAudioStreamIsMixable"=0,"IOAu
+dioStreamFormatFlags"=0,"IOAudioStreamByteOrder"=1,"IOAudioStreamBitD
+epth"=24,"IOAudioStreamSampleFormat"=1819304813,"IOAudioStreamDriverT
+ag"=131073,"IOAudioStreamNumChannels"=2,"IOAudioStreamBytesPerPacket"
+=8,"IOAudioStreamBitWidth"=32,"IOAudioStreamFramesPerPacket"=1,"IOAud
+ioStreamMinimumSampleRate"={"IOAudioSampleRateWholeNumber"=48000,"IOA
+udioSampleRateFraction"=0}},{"IOAudioStreamMaximumSampleRate"={"IOAud
+ioSampleRateWholeNumber"=88200,"IOAudioSampleRateFraction"=0},"IOAudi
+oStreamAlignment"=0,"IOAudioStreamNumericRepresentation"=1936289396,"
+IOAudioStreamIsMixable"=1,"IOAudioStreamFormatFlags"=0,"IOAudioStream
+ByteOrder"=1,"IOAudioStreamBitDepth"=24,"IOAudioStreamSampleFormat"=1
+819304813,"IOAudioStreamDriverTag"=131073,"IOAudioStreamNumChannels"=
+2,"IOAudioStreamBytesPerPacket"=8,"IOAudioStreamBitWidth"=32,"IOAudio
+StreamFramesPerPacket"=1,"IOAudioStreamMinimumSampleRate"={"IOAudioSa
+mpleRateWholeNumber"=88200,"IOAudioSampleRateFraction"=0}},{"IOAudioS
+treamMaximumSampleRate"={"IOAudioSampleRateWholeNumber"=88200,"IOAudi
+oSampleRateFraction"=0},"IOAudioStreamAlignment"=0,"IOAudioStreamNume
+ricRepresentation"=1936289396,"IOAudioStreamIsMixable"=0,"IOAudioStre
+amFormatFlags"=0,"IOAudioStreamByteOrder"=1,"IOAudioStreamBitDepth"=2
+4,"IOAudioStreamSampleFormat"=1819304813,"IOAudioStreamDriverTag"=131
+073,"IOAudioStreamNumChannels"=2,"IOAudioStreamBytesPerPacket"=8,"IOA
+udioStreamBitWidth"=32,"IOAudioStreamFramesPerPacket"=1,"IOAudioStrea
+mMinimumSampleRate"={"IOAudioSampleRateWholeNumber"=88200,"IOAudioSam
+pleRateFraction"=0}},{"IOAudioStreamMaximumSampleRate"={"IOAudioSampl
+eRateWholeNumber"=96000,"IOAudioSampleRateFraction"=0},"IOAudioStream
+Alignment"=0,"IOAudioStreamNumericRepresentation"=1936289396,"IOAudio
+StreamIsMixable"=1,"IOAudioStreamFormatFlags"=0,"IOAudioStreamByteOrd
+er"=1,"IOAudioStreamBitDepth"=24,"IOAudioStreamSampleFormat"=18193048
+13,"IOAudioStreamDriverTag"=131073,"IOAudioStreamNumChannels"=2,"IOAu
+dioStreamBytesPerPacket"=8,"IOAudioStreamBitWidth"=32,"IOAudioStreamF
+ramesPerPacket"=1,"IOAudioStreamMinimumSampleRate"={"IOAudioSampleRat
+eWholeNumber"=96000,"IOAudioSampleRateFraction"=0}},{"IOAudioStreamMa
+ximumSampleRate"={"IOAudioSampleRateWholeNumber"=96000,"IOAudioSample
+RateFraction"=0},"IOAudioStreamAlignment"=0,"IOAudioStreamNumericRepr
+esentation"=1936289396,"IOAudioStreamIsMixable"=0,"IOAudioStreamForma
+tFlags"=0,"IOAudioStreamByteOrder"=1,"IOAudioStreamBitDepth"=24,"IOAu
+dioStreamSampleFormat"=1819304813,"IOAudioStreamDriverTag"=131073,"IO
+AudioStreamNumChannels"=2,"IOAudioStreamBytesPerPacket"=8,"IOAudioStr
+eamBitWidth"=32,"IOAudioStreamFramesPerPacket"=1,"IOAudioStreamMinimu
+mSampleRate"={"IOAudioSampleRateWholeNumber"=96000,"IOAudioSampleRate
+Fraction"=0}},{"IOAudioStreamMaximumSampleRate"={"IOAudioSampleRateWh
+oleNumber"=176400,"IOAudioSampleRateFraction"=0},"IOAudioStreamAlignm
+ent"=0,"IOAudioStreamNumericRepresentation"=1936289396,"IOAudioStream
+IsMixable"=1,"IOAudioStreamFormatFlags"=0,"IOAudioStreamByteOrder"=1,
+"IOAudioStreamBitDepth"=24,"IOAudioStreamSampleFormat"=1819304813,"IO
+AudioStreamDriverTag"=131073,"IOAudioStreamNumChannels"=2,"IOAudioStr
+eamBytesPerPacket"=8,"IOAudioStreamBitWidth"=32,"IOAudioStreamFramesP
+erPacket"=1,"IOAudioStreamMinimumSampleRate"={"IOAudioSampleRateWhole
+Number"=176400,"IOAudioSampleRateFraction"=0}},{"IOAudioStreamMaximum
+SampleRate"={"IOAudioSampleRateWholeNumber"=176400,"IOAudioSampleRate
+Fraction"=0},"IOAudioStreamAlignment"=0,"IOAudioStreamNumericRepresen
+tation"=1936289396,"IOAudioStreamIsMixable"=0,"IOAudioStreamFormatFla
+gs"=0,"IOAudioStreamByteOrder"=1,"IOAudioStreamBitDepth"=24,"IOAudioS
+treamSampleFormat"=1819304813,"IOAudioStreamDriverTag"=131073,"IOAudi
+oStreamNumChannels"=2,"IOAudioStreamBytesPerPacket"=8,"IOAudioStreamB
+itWidth"=32,"IOAudioStreamFramesPerPacket"=1,"IOAudioStreamMinimumSam
+pleRate"={"IOAudioSampleRateWholeNumber"=176400,"IOAudioSampleRateFra
+ction"=0}},{"IOAudioStreamMaximumSampleRate"={"IOAudioSampleRateWhole
+Number"=192000,"IOAudioSampleRateFraction"=0},"IOAudioStreamAlignment
+"=0,"IOAudioStreamNumericRepresentation"=1936289396,"IOAudioStreamIsM
+ixable"=1,"IOAudioStreamFormatFlags"=0,"IOAudioStreamByteOrder"=1,"IO
+AudioStreamBitDepth"=24,"IOAudioStreamSampleFormat"=1819304813,"IOAud
+ioStreamDriverTag"=131073,"IOAudioStreamNumChannels"=2,"IOAudioStream
+BytesPerPacket"=8,"IOAudioStreamBitWidth"=32,"IOAudioStreamFramesPerP
+acket"=1,"IOAudioStreamMinimumSampleRate"={"IOAudioSampleRateWholeNum
+ber"=192000,"IOAudioSampleRateFraction"=0}},{"IOAudioStreamMaximumSam
+pleRate"={"IOAudioSampleRateWholeNumber"=192000,"IOAudioSampleRateFra
+ction"=0},"IOAudioStreamAlignment"=0,"IOAudioStreamNumericRepresentat
+ion"=1936289396,"IOAudioStreamIsMixable"=0,"IOAudioStreamFormatFlags"
+=0,"IOAudioStreamByteOrder"=1,"IOAudioStreamBitDepth"=24,"IOAudioStre
+amSampleFormat"=1819304813,"IOAudioStreamDriverTag"=131073,"IOAudioSt
+reamNumChannels"=2,"IOAudioStreamBytesPerPacket"=8,"IOAudioStreamBitW
+idth"=32,"IOAudioStreamFramesPerPacket"=1,"IOAudioStreamMinimumSample
+Rate"={"IOAudioSampleRateWholeNumber"=192000,"IOAudioSampleRateFracti
+on"=0}})
  |     "IOAudioStreamID" = 0
  |     "IOAudioStreamStartingChannelID" = 1
  |     "Transfer Alignment" = 1
  |     "idVendor" = 4661
  |     "IOAudioStreamTerminalType" = 257
  |     "IOAudioStreamDescription" = "Scarlett Solo USB "
  |   }
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