These samples demonstrate many of the concepts that are described in this documentation, and the samples can be tailored to a driver developer's needs. This sample features enhanced parameter validation and overflow detection. AVStream is a Microsoft-provided multimedia class driver that supports video-only streaming and integrated audio/video streaming. The sample also shows how to implement DMA by using the related functionality provided by the AVStream class driver. Supported products: Windows 11 Client, version 22H2 and later, Servicing Drivers, Windows 11 Client. Description: Intel Camera driver update released in July 2023. Details: Overview Language Selection Package Details Install Resources. The purpose of the sample is to demonstrate how to write a pin-centric AVStream minidriver. UpdateID: d164a309-602f-454b-ba51-a5a63ba244d8. This streaming media driver performs video captures at 320 x 240 pixels in either RGB24 or YUV422 format using direct memory access (DMA) into capture buffers. What Are UVC Drivers Universal Video Class (UVC) drivers are AVStream Microsoft-provided mini drivers that give driver support to USB Video Class devices. The AVStream simulated hardware sample driver (Avshws) provides a pin-centric AVStream capture driver for a simulated piece of hardware. The pair of WDMAud drivers translate between user-mode Microsoft Windows multimedia system calls and kernel-streaming I/O requests. The sample demonstrates how to write a filter-centric AVStream minidriver.ĪVStream Simulated Hardware Sample Driver (Avshws) The kernel-mode WDMAud system driver (Wdmaud.sys) is paired with the user-mode WDMAud system driver (Wdmaud.drv). This streaming media driver performs video captures at 320 x 240 pixel resolution in RGB24 or YUV422 format while playing a user-provided Pulse Code Modulation (PCM) wave audio file in a loop. From the drop-down menu click on the Update Driver button. Now in the Device Manager window, look out for the Cameras category and right-click on it. In the RUN box type devmgmt.msc and press the OK button or hit Enter. The AVStream filter-centric simulated capture sample driver (Avssamp) provides a filter-centric AVStream capture driver with functional audio. Launch the RUN box on your device by pressing the Windows + R key on your device. Source code for sample AVStream minidrivers are provided in the Windows Driver Kit (WDK) samples on GitHub: SampleĪVStream Filter-Centric Simulated Capture Driver (Avssamp)
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