
TUSBAudio - Thesycon USB Audio 2.0 Class Driver for Windows

Revision History


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V4.59.0 (January 17, 2019)
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* New: support for Windows 10 (1809)

* New: support clock selector notifications from the the device

* New: sound device configuration now allows use of the same physical channel in different sound devices in parallel

* Fix: problem in KS MIDI processing function

* Fix: TUSBAUDIO_QueryDeviceStatistics can cause the calling app to crash

* Chg: build environment switched to Visual Studio 2017 with WDK 1709

* Chg: documentation


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V4.55.0 (November 09, 2018)
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* Fix: ASIO device selection does not work on some systems

* Fix: default sound device creation algorithm created an empty format list


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V4.54.0 (November 06, 2018)
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* Fix: descriptor parser reads from a position past descriptor limit 
       if the device implements a MIDI AC only

* Fix: bring ASIO settings dialog in foreground does not work in all cases

* Chg: upgraded to ASIO SDK 2.3.1

* Fix: overwriting feature unit ID does not work correctly

* Chg: added mixer control panel customization options

* Fix: propose format property overrides other properties

* Chg: added registry keys MaxBitsPerSample, Emulate16bitFormat and Emulate24bitFormat per sound device

* Fix: feature unit override per registry does not support master channel

* Chg: removed per-channel registry settings VolumeControl and MuteControl

* Chg: added MinSampleRate and MaxSampleRate registry parameter to Windows sound device configuration


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V4.47.0 (July 31, 2018)
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* Chg: QPC runtime measurement added again

* Fix: Spy tool doesn't work correctly with virtual channels

* Chg: improved Spy tool statistics

* Chg: API version 5.2

* New: API function TUSBAUDIO_QueryDeviceStatistics added


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V4.46.0 (July 24, 2018)
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* New: Workaround for driver unload problems (Code 38 in device manager)
       caused by KS layer leaking references on our child PDO.
       Registry parameter EnableLeakedPdoRefsWorkaround (true by default)

* New: Added optional PreferDeviceInfo to the KS .inf to use string descriptor of
       the audio control interface if exists or product string of the device
       for device description instead of the one from the .inf file

* Fix: Crash occurs if feature unit is specified explicitly via .inf file

* Fix: Linker optimization eliminated gDriverVersionString which we want to keep in the .sys


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V4.45.0 (June 18, 2018)
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* New: driver tested on Windows 1803 (RS4)

* Chg: volume input/output channel names now customizable in control panel

* Chg: ASIO device is now selectable, new API functions:
       TUSBAUDIO_SetPreferredASIODevice, TUSBAUDIO_ClearPreferredASIODevice
       
* Fix: volume control for device with master only control was not working


* Fix: sound device name, visible via DirectKS now uses the string from the USB terminal/control interface


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V4.43.0 (March 28, 2018)
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* New: added DisableGetProposeDataFormatIN and DisableGetProposeDataFormatOUT
       registry parameter to disable GetProposeDataFormat handler in KS
       
* New: added registry parameter to configure default sound device category and name
       (DefaultSoundDeviceIN and DefaultSoundDeviceOUT)


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V4.42.0 (March 22, 2018)
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* Fix: processing did not recover correctly from stream errors

* Fix: BSOD in KS driver error handling

* Fix: DSP load mixer weights ignores default initialization

* Fix: DSP mixer weights not saved in registry on system reboot

* Fix: auto mode with alternate settings containing different channel counts and
       USB valid alternate setting request supported by the device


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V4.41.0 (February 15, 2018)
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* New: Emulate16bitFormatIn/Out and Emulate24bitFormatIn/Out config settings

* New: DSD stream format defined in the USB audio class 3.0 is supported,
       see Frmts30.pdf, section 2.3.1.6.5

* New: VALID_ALT_SETTINGS control is used (if implemented by the device)
       to auto-select alt setting based on sample rate

* New: VALID_ALT_SETTINGS control notifications supported,
       notification triggers stream restart and ASIO reset
       
* Fix: automatic alternate setting selection mode didn't work in all case
       if the device has external clock sources


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V4.40.0 (January 25, 2018)
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* Fix: level meter for virtual channels didn't work correctly in the mixer application

* Fix: cleanup if DriverEntry fails

* Fix: software loopback path issue in DSP plugins


* Chg: Windows mono recording devices now show full list of formats

* Chg: volume controls for an odd number of channels are now shown in the control panel


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V4.38.0 (December 05, 2017)
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* Fix: mixer app weight update issue


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V4.37.0 (November 30, 2017)
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* New: driver tested on Windows 1709 (RS3)

* Fix: sound devices with virtual channels are not shown

* Chg: Microsoft signing now with symbols (DCK)


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V4.36.0 (November 08, 2017)
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* Chg: removed Company from version resources

* Fix: GetProposeDataFormat now reports 2 channels for speaker device to work again
       with speaker sound devices with more than 8 channels


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V4.35.0 (October 26, 2017)
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* Fix: reported current sample rate for Audio Class 1.0 device was not correct

* Fix: 32bit ASIO DLL was not registered on 64bit systems (introduced in 4.34)


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V4.34.0 (October 16, 2017)
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* Chg: added sample rate unit string for status page and changed sample rate strings

* Chg: ASIO DLL now optional in DCK scripts

* Fix: default ASIO channel names begins with index 1 instead of 0

* Fix: control panel clock source poll timer kill exception


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V4.33.0 (October 11, 2017)
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* Fix: customized strings are not shown correctly in the control panel and DFU app

* Chg: python scripts of the DCK now support pathnames longer than 260 characters


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V4.32.0 (October 10, 2017)
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* Chg: statistics extended

* Chg: ASIO switch IOCTL optimized

* Fix: ASIO reset loop if buffer switch is blocked

* Fix: ASIO DLL internal settings struct was not synchronized


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V4.30.0 (September 29, 2017)
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* New: sample rates higher 192kHz now supported on Windows 7 for WASAPI exclusive mode applications

* New: ASIO to USB buffer size mappings now can be configured through registry

* Chg: external clock source handling changed, clock source notifications now supported

* New: registry option ClockSourceSupportsNotifications

* New: API function TUSBAUDIO_GetClockSourceStatus

* New: notification NotifyEvent_AsioBufferSizeChanged added

* New: ASIO channel setup now can be configured through registry

* Chg: language customization format of control panel and DFU application changed

* New: added MinAsioBufferSize_48k and MaxAsioBufferSize_48k registry parameters
       to limit the ASIO buffer size

* Chg: USB interface blocking is supported in device instance registry key only, 
       not in service key, iAP interface will be blocked by default

* New: user manual significantly improved and enhanced

* Chg: ASIO now reports a range of buffer sizes (can be disabled through registry key)

* Fix: ASIO thread priority now set before first ASIO buffer switch

* Fix: current ISO buffer was not released in stop stream

* New: two different ASIO buffer size modes:
       - multiply ASIO buffer size if sample rate is changed
       - constant ASIO buffer size if sample rate is changed
       
* New: added optional additional USB out buffer to full-fill Ableton Live CPU load simulator
       (this adds extra latency to the OUT path if enabled)
       
* New: added script support for APOs
     
* Chg: streaming buffer size change does no longer destroy and recreate child PDO
       and MIDI ports (dynamic MIDI ports cannot be handled by all apps properly)

* Chg: increased ASIO thread priority to 26

* New: added kThesyconAsioSetThreadBasePrio ASIO future request

* Fix: volume control slider in control panel was not always in correct position

* Chg: include USB product string in default MIDI names

* New: 384k and 352.8k sample rate supported on Win10

* Chg: registry parameter Disable200kHzLimit removed

* New: Driver tested on Win 10 1703

* New: device latency now can be overwritten through registry

* Chg: ASIO implementation improved: latency reduced by one ASIO buffer size

* Chg: ASIO buffer setting redesigned, USB buffer setting removed

* Chg: API function TUSBAUDIO_GetUsbStreamingMode, TUSBAUDIO_SetUsbStreamingMode, TUSBAUDIO_GetMinimumASIOBufferSize,
       TUSBAUDIO_GetASIOBufferSize and TUSBAUDIO_SetASIOBufferSize removed
       
* New: API function TUSBAUDIO_GetASIOInstanceInfo and TUSBAUDIO_SetASIOBufferPreferredSize added


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V4.14.0 (September 06, 2017) 
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* Chg: added registry key to reject lower channel counts on WDM sound devices


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V4.13.0 (July 19, 2017) 
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* Chg: implemented get KSPROPERTY_PIN_PROPOSEDATAFORMAT handler in KS driver


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V4.12.0 (June 29, 2017) 
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* New: Installer: code integrity check during installation

* Chg: INF file DriverVer date/time now reflects the time when the driver 
       package was built

* Chg: Installer setup.ini uses attestation signed package for Server 2016

* New: Installer supports automatic uninstallation of other driver packages via 
       setup.ini option AdditionalSetupRegPathList

* New: Installer supports custom icon shown in Apps&Features panel via
       setup.ini option CustomUninstallIcon


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V4.11.0 (May 03, 2017) 
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* Fix: BSOD if a device implements a playback path only and no recording path

* Fix: bug in time bomb restriction: potential infinite loop

* New: IgnoreInPath/IgnoreOutPath/IgnoreFeedbackEndpoint registry 
       parameters (used for testing purposes only)


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V4.10.0 (April 26, 2017) 
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* New: Workaround for "Unknown publisher" warning pop-up
       in uninstall panel in Windows 10


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V4.0.0 (April 24, 2017) 
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* Chg: Thesycon handles full customization by default,
       DSK and DCK available to customers

* Chg: Driver uses new license mechanism

* Fix: Conversion of 32 bit pointers in the x64 driver in case 
       a 32 bit application uses /LARGEADDRESSAWARE

* Chg: Installer setup.ini supports separate driver packages for
       Win7 and Win10, required for new signing requirement
       
* Chg: Driver package now contains 32bit and 64bit API DLLs on 64bit systems

* New: Registry parameters DisableKsVolMuteIn and DisableKsVolMuteOut

* Chg: Debug driver uses ETW based debug traces now (requires tracecon.exe utility)

