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Windows Driver Model - Wikipedia
https://en.wikipedia.org/wiki/Windows_Driver_Model#:~:text=WDM%20implements%20a%20layered%20architecture%20for%20device%20drivers%2C,not%20need%20to%20interact%20directly%20with%20one%20another.
WDM Audio Architecture Basic Concepts - Windows …
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/wdm-audio-architecture--basic-concepts
The WDM audio architecture is based on kernel streaming (KS) services and is supported in Microsoft Windows 2000 and later and in Windows Me/98. For information about KS services, see Kernel Streaming. This section discusses the following topics: Introduction to WDM Audio Drivers Audio Filters, Pins, and Nodes Audio Endpoints, Properties and Events
WDM Audio Architecture Advanced Topics - Windows …
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/wdm-audio-architecture--advanced-topics
This section discusses advanced architectural features of Microsoft Windows Driver Model (WDM) audio drivers. It presents the following topics: Data-Intersection Handlers. Multifunction Audio Devices. Dynamic Audio Subdevices. Supporting Non-PCM Wave Formats. High Definition Audio DDI. Feedback
WDM Audio Drivers Overview - Windows drivers | …
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/getting-started-with-wdm-audio-drivers
Windows Driver Model (WDM) audio drivers make use of the kernel streaming (KS) components, which operate in kernel mode and are part of the operating system. Hardware vendors should make several design decisions before beginning development of a Windows-based audio hardware device.
WDM Audio Terminology - Windows drivers | Microsoft …
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/wdm-audio-terminology
Adapter Driver (WDM Audio) The adapter driver (WDM audio) serves as a container for all miniport drivers associated with a given adapter. This adapter driver is recognized as a driver by the operating system and is contained in its own .sys file. The audio adapter driver consists of a set of miniport drivers and additional code that addresses …
Introduction to WDM Audio Drivers - Windows drivers ...
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/introduction-to-wdm-audio-drivers
A filter driver resides in a WDM driver stack and can intercept and modify the I/O request packets (IRPs) that propagate through the stack. Upper- and lower-level filter drivers reside above and below the function driver, respectively. In this section, the term filter refers to a KS filter rather than a filter driver unless noted otherwise.
Roadmap for Developing WDM Audio Drivers - Windows …
https://docs.microsoft.com/en-us/windows-hardware/drivers/audio/roadmap-for-developing-wdm-audio-drivers
Develop, build, test, and debug your WDM audio driver. For information about how to develop an audio driver for your specific audio adapter, see Adapter Driver Construction. See Developing, Testing, and Deploying Drivers for information about iterative building, testing, and debugging. This process will help ensure that you build a driver that works. Create a driver …
Exploiting WDM Audio Drivers - ORK Home Page
http://www.orkspace.net/secdocs/Windows/Kernel/Exploiting%20WDM%20Audio%20Drivers.pdf
Kernel Streaming architecture (msdn). As the above image shows, developers facing a WDM audio driver should choose between drivers binded to the Port Class driver(portcls.sys) or directly to the KS (ks.sys) . In many cases, PortCls.sys is the preferred one. So, let's see what would be the common initialization sequence for these type of drivers: 1.
BBPC News | BuildOrBuy - (WDM) Windows Audio Driver Model Info
http://www.buildorbuy.org/wdm.html
"WDM - (Windows / Win32 Driver Model) A device driver architecture from Microsoft that consolidates drivers for Windows 95/98 and Windows NT. WDM allows a hardware vendor to write one Windows driver for its peripheral device that works with both Win9x , WinNT / Win2000 and WinXP versions."
ASIO4ALL v2 Universal ASIO Driver For WDM Audio
https://www.umniabank.ma/sites/default/files/ASIO4ALL%20v2%20Instruction%20Manual.pdf
WDM driver (smwdm.sys), this option absolutely must be enabled in order to make it work at 44.1 kHz at all. 9. Force WDM driver to 16 Bit This option only has an effect if the supported bit depth of the WDM driver is larger than 16, but less than 24. Some AC97 devices report e.g. 20 Bits resolution but cannot actually be opened for more than
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