v4l2的一些project

MTK Camera移植进阶:从Kernel 4.19到5.10,驱动架构与上电时序的迁移实战 本文详细解析了MTK Camera驱动从Kernel 4.19迁移到5.10的关键步骤与调试技巧,重点介绍了V4L2架构变化、上电时序集成及编译系统适配。通过实战案例,帮助工程师高效完成驱动迁移,解决常见启动问题和图像异常,提升Camera模块的稳定性和性能。 阅读详情

V4L2 People & Projects

February 14, 2004

http://www.thedirks.org/v4l2/peopleprojects.htm

The purpose of this page is to communicate information about the various V4L2 related projects in progress around the world, and bring together the people working on the projects with those who are interested in the work, who are seeking drivers or applications, or who are working on related projects.

Back to main V4L2 page.
 
 
 

Devices and Drivers
DeviceWhoLinks and Notes
ATI Graphics CardsOctavian Purdila, et al
purdila@sundy.cs.pub.ro
Octavian is part of the GATOS group and he is working on a V4L2 driver  for ATI graphics cards. Also in the GATOS group are Vladimir Dergachev,  Oyvind Aabling, Stea Greene, Chris Hardy, Bernardo Cardosso, Christian  Lupien.
http://gatos.sourceforge.net/
Bt848- and Bt878-based cardsJustin Schoeman
justin@suntiger.ee.up.ac.za
The V4L2 driver for these popular cards. There are a lot of variations of these types of cards, so try it out on your system, and send a message to Justin about your results. Thanks.
http://bttv-v4l2.sourceforge.net/
C-Cube ZivaMichael Morrison
mike@ringo.reno.nv.us
Mike is a software engineer working on standard and HD digital video disk recorders. For V4L2 he is investigating DVD playback support, and is currently seeking information about Sigma Designs Hollywood+ card http://www.sigmadesigns.com/hollywoodplus.html , and/or the C-Cube Ziva MPEG-2 decoder chip http://www.c-cube.com
Creative Webcam IIMailing list
vision-webcam@errors.no
Drivers are being made for USB and PPC2 Vision CPiA based cameras.
Data Translation DT3153Luís Alberto Lucas
lalucas@daeln.cefetpr.br
Driver port in progress. Contact the author for more information.
Iomega BuzDave Perks
dperks@ibm.net
Gernot Ziegler
gz@lysator.liu.se
Dave created the Iomega Buz drivers, and is now porting them to V4L2. Gernot is managing the Iomega Buz on Linux software projects.
http://www.lysator.liu.se/~gz/buz
Linux DVDLiViDThe LiVid Project.
http://www.linuxvideo.org/
Linux Media Labs LML33 (card)Vassili Leonov
vleo@pcisys.net
Vassili is making available for sale an MJPEG video capture card for Linux, with open specifications and GPL drivers. The company is called Linux Media Labs, and the board is the LML33.
http://www.linuxmedialabs.com/
LML33 (driver)Matt Gundry
mjgundry@faa-engineers.com
Matt is writing drivers for the LML33 for video capture, compression and output. See above.
Matrox Marvel G200 /Rainbow RunnerEddie Galvez
eddie@brandeis.edu
Eddie has created the portal site for Marvel on V4L2!
http://marvel.sourceforge.net/
Matrox MeteorOlivier Carmona
carmona@k-team.com
Olivier has created V4L2 Matrox Meteor drivers.
http://www.k-team.com/software/v4l2.html
Matrox Meteor IICord Seele
cs@emlix.com
Cord is working on V4L2 drivers for the Meteor II family.
http://www.emlix.com/meteor2
National Semiconductor Geode Family CPU TV Set-Top SystemsLinux4.TV
Complete open-source set-top box system software from National and Century Embedded Technologies. Geode-based development systems are available.
http://www.linux4.tv/
http://www.national.com/
National Semiconductor Geode Family CPUShaun Savage
shaun@igel.de
Adding Geode support to kernel 2.4 for CPU detection, frame buffer, i2c, vbi and video.
http://v4l2.infomatec-ias.com/
Philips SAA7146-based hardwareMichael Hunold
michael@mihu.de
Michael has written a generic V4L2-driver-core that provides easy access to any saa7146 in the system via V4L2. 
The package currently includes two so-called 'extensions', e.g. the actual 'front-ends' to the real hardware: 'Multimedia eXtension Board' ('MXB') (a tv-card by Siemens-Nixdorf, quite popular in Germany) and 'dpc7146' , a demonstration-board by Philips Semiconductors. Comprehensive informations about saa7146-based hardware can be found on his homepage.
http://www.mihu.de/linux/
Pictioneers P400/P400HCTed Herring
ted@pictioneers.com
Pictioneers P400 is a 4-port Conexant 878A (BT848 compatible) MJPEG video capture card. V4L/V4L2 drivers written for the BT848 chipset will work with this card, also works with dvr.sourceforge.net application. The P400HC is under development, scheduled for release November 2001, and is a 4-port hardware compression-based MJPEG video capture card (ZR36060 chipset). Pictioneers will be releasing an open source V4L2 driver for the P400HC.
http://www.pictioneers.com/
TV500Steve Barbo
barbo@umrtv.uc.umn.edu
http://umrtv.uc.umn.edu/~barbo/tv500.html
Winnov Videum ISA, PCIBill Dirks
bdirks@pacbell.net
This driver works with all Winnov Videum ISA and PCI cards and the Philips EasyVideo card. An OSS audio driver is also available.
http://www.thedirks.org/winnov/
Winnov VideumCam Traveler PCMCIADoe-Wan Kim
dwkim@isi.edu
Driver for the Winnov VideumCam Traveler PCMCIA camera. Orginally developed at University of Michigan. More recent workd done at Information Sciences Institute / USC
http://www.thedirks.org/winnov/
 
SANE
(scanner interface)
Conrad Parker
conradp@cse.unsw.edu.au
John Ferlito
johnf@inodes.org
Conrad and John, in an incredible feat of midnight engineering, have created a SANE backend that uses the V4L2 API, which makes your video capture card look like a scanner. What this means is you can capture images from a video capture card using any program that can get images from a scanner, for example, the GIMP, and scanimage.
http://www.inodes.org/sane-v4l2/

 
 
 
 
 
 
Applications and Libraries
ProjectWhoWhat
DirectFB
dok@directfb.org
DirectFB supports V4L2 devices as Video Providers for the display.
http://www.directfb.org/
Justin's V4L2 UtilitiesJustin Schoeman
justin@suntiger.ee.up.ac.za
Some cool V4L2 applications, and a patch to AleVT to allow it to use streaming capture for VBI.
http://www.ee.up.ac.za/~justin/v4l2
XawtvGerd Knorr
kraxel@goldbach.in-berlin.de
Gerd has ported the famous xawtv TV viewing application to V4L2.
http://www.strusel007.de/linux/xawtv/index.html
ZappingZapping Maintainers
zapping-misc@lists.sourceforge.net
A great TV viewer for the Gnome environment. Advanced VBI decoder. Lirc (infrared) support. Realtime MPEG recording. And more...
http://zapping.sourceforge.net/
MainActorMain Concept (Markus Moenig)
markusm@mainconcept.de
Main Concept is a German software company that has written a video editing application called MainActor. MainActor is available for Windows, OS/2 and Linux. [1-22-03: Seems to be only Windows now.]
http://www.mainconcept.com/
RealProducerRealNetworks (Axel Muhr)
muhr@real.com
RealNetworks has ported their RealProducer streaming audio/video encoder to Linux. It uses the v4l API, but it can stream live video from a V4L2 device thanks to the V4L2's backward compatibility layer.
http://www.real.com/
ImprovPetter Reinholdtsen
pere@hungry.com
Improv is a tool for basic real time image processing with low resolution, e.g. suitable for mobile robots.
http://www.ee.uwa.edu.au/~braunl/improv/
vicJean-Marc Orliaguet
jmo@medialab.chalmers.se
Jean-Marc is maintaining the Linux patches for the vic video conferencing tool. http://www.medialab.chalmers.se/people/jmo/devel/vic/v4l2.html
and see also this vic site.
Linux Media Interface LibraryBill Miller
wjmjr@eden.rutgers.edu
Bill is starting a project called the Linux Media Interface Library to create a high-level C++ library over V4L2 for handling multimedia streams, both live streams, and streams stored in files. Get the details at
http://www.eden.rutgers.edu/~wjmjr
CROWEric Fry
eric@atu.com.au
Eric is working on a non-linear editing (NLE) application called CROW. He has been working on it for quite a while, and it has a lot of capability already. He is seeking people to collaborate on further development. More information and screenshots at http://www.crow.atu.com.au/
SpliceChris Harshman
harshman1@aol.com
Chris is interested in writing a non-linear editing (NLE) application for Linux using V4L2, which he is calling Splice. He is seeking assistance. See http://paradigm.uor.edu/~harshman/linux/splice.html
matterialCarlos Carnero
matterial@mail.com
Carlos is designing a professional video compositing application, codename: matterial. He is seeking help with this project.
http://matterial.sourceforge.net/

Mark Podlipec
podlipec@baynetworks.com
Mark wrote the XAnim video and animation file player software. He is now working on a new player architecture, and considering how to integrate it with the V4L2 library and driver APIs.

Rene Mueller
kiwi@the-labs.com
Rene is interested in creating a file format for capturing and editing videos on Linux, and getting some basic record, play, and edit tools written. Later some more full-featured tools. http://the-labs.com/VideoLab/

 
 
 

If you are working on a V4L2 related project, or considering adding V4L2 support to your project, you should consider getting on the list. It can help you find others willing to contribute to your project, find people interested in your project who would like to test and use it, find people working on related projects who would like to coordinate their efforts with yours.

To get on the list send me (bdirks@pacbell.net) an email with what you would like to say and any links you would like to have here. If you would like to make a change, or if I made a mistake, or if you want to be removed, just email and I will take care of it as soon as possible.


 
基于i.MX6ULL与V4L2的嵌入式相机系统开发实战 在嵌入式Linux开发中,V4L2(Video for Linux 2)是Linux内核提供的标准视频设备驱动框架,它为摄像头等视频采集设备提供了统一的编程接口。其工作原理是通过ioctl系统调用与内核驱动交互,管理缓冲区和数据流,实现高效的视频数据采集。这项技术的核心价值在于,它使得开发者能够在资源受限的嵌入式平台上,构建稳定、可移植的多媒体应用。典型的应用场景包括智能监控、工业视觉、物联网终端等需要本地图像处理与展示的设备。本文聚焦于在NXP i.MX6ULL这一广泛使用的ARM Cortex-A7处理 阅读详情

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嵌入式Linux AI是指在ARM Cortex-A等资源受限平台运行轻量化AI模型的边缘智能系统,其核心在于虚拟内存管理、实时内核调度(如PREEMPT_RT)与NPU驱动协同优化。区别于传统单片机开发,它要求工程师理解V4L2视频子系统、DMA零拷贝机制及模型量化部署等关键技术,以支撑工业缺陷识别、车载DMS等低延迟场景。技术价值体现在确定性响应(<80ms闭环)、功耗可控与本地数据闭环,广泛应用于智能网关、边缘摄像头与车规级AI终端。本文聚焦嵌入式Linux AI与STM32开发的本质分野及工程化能力

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Hobbit玩转Zynq MPSoC系列之2:TPG输入+VCU编码+rtp网络传输

  Xilinx官方提供了TPG、MIPI、SDI、HDMI和FILE等接口作为图像的输入源,在工程中例化为V4L2架构设备,供上层软件调用。TPG全称为Test Pattern Generator,为FPGA逻辑产生的一个模拟图像源,可提供一系列不同模式的模拟图像,对于初学者而言是学习V4L2架构、Gstreamer命令以及调试流程最合适的开端。VCU编码并通过rtp网络传输是很多工程应用的基本需求,本文将演示如何将TPG图像编码并通过网络传输。 平台、配件及软件 ZCU104 Vivado2019.

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基于Qt的Linux摄像头测试源码项目实战

某些应用需强制使用特定像素格式(如 OpenCV 处理偏好 MJPG):// 设置采集格式// 或 "mjpeg"注意:并非所有摄像头都支持 MJPG 输出,需先通过验证。对于需深度控制图像数据流的应用(如机器视觉),可通过继承拦截原始帧数据。

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