name | libVA |
---|---|
title | libVA |
logo | |
screenshot | |
released | |
latest release version | 1.0.12 |
latest release date | |
latest preview date | |
frequently updated | |
programming language | C |
operating system | Unix-like |
genre | Library |
website | }} |
VA API was designed with the purpose of some day fully replacing XvMC, which used to be the Unix equivalent of the Microsoft Windows DirectX Video Acceleration (DxVA) API, and more.
As of February 28, 2009 VA API is only natively supported by the drivers for Intel's Poulsbo Chipset with GMA 500 integrated graphics and the Intel G45 chipset (with Intel GMA X4500HD integrated graphics). The G43 chipset (with Intel GMA X4500 integrated graphics) does not support decoding any video other than MPEG-2. S3 Graphics's Chrome 400 and later series are also supported.
VDPAU (Video Decode and Presentation API for Unix), a competing API designed by NVIDIA, can potentially be also used as a backend for the VA API. If this is supported, any software that supports VA API then also indirectly supports a subset of VDPAU. Additionally, in November 2009, VA-API gained a new proprietary backend named "xvba-video" which allows VA-API powered applications to take advantage of AMD Radeon's UVD2 chipsets via the XvBA library (X-Video Bitstream Acceleration API designed by AMD).
"This API is intended to provide an interface between a video decode application (client) and a hardware decode accelerator (server), to off-load video decode operations from the host to the hardware accelerator at various entry-points." http://www.freedesktop.org/wiki/Software/vaapi
"A new video acceleration API is being developed, in an effort led by Intel. This new API supports more complete offload (VLD) as well as iDCT+MC, and can support acceleration of MPEG4, H.264, VC-1, as well as MPEG-2." http://www.mythtv.org/wiki/XvMC
The "VA API" and "libVA" can also be read about here: "The end user impact is improved performance of H.264, VC-1, MPEG-2 and MPEG-4 video playback with media players that use the new API compared to playback using a pure software implementation." https://wiki.ubuntu.com/mobile-hw-decode
Category:Application programming interfaces Category:Freedesktop.org Category:Application layer protocols Category:Video acceleration Category:X Window extensions
This text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
Name | Wau Holland |
---|---|
Birth name | Herwart Holland-Moritz |
Birth date | December 20, 1951 |
Death date | July 29, 2001 |
Death place | Bielefeld, Germany |
Known for | Cofounder of the Chaos Computer Club }} |
Holland also co-founded the CCC's hacker magazine Datenschleuder in 1984, which praised the possibilities of global information networks and powerful computers, and included detailed wiring diagrams for building your own modems cheaply. The then-monopolist phone company of Germany's Deutsche Bundespost had to approve modems and sold expensive, slow modems of their own. The telecommunications branch of Deutsche Bundespost was privatized and is now Deutsche Telekom.
Because of Holland's continuing participation in the club, the CCC gained popularity and credibility. He gave speeches on information control for the government and the private sector. Holland fought against copy protection and all forms of censorship and for an open information infrastructure. He compared the censorship demands by some governments to those of the Christian church in the Middle Ages and regarded copy protection as a product defect. In his last years, he spent a lot of his time in a youth center teaching children both the ethics and the science of hacking, with unique style and intelligent humor.
Holland was an amateur radio operator and held the callsign DB4FA.
Holland died in Bielefeld on 29 July 2001 of complications caused by a brain stem stroke from which he suffered in May.
Category:1951 births Category:2001 deaths Category:German computer scientists Category:People from North Rhine-Westphalia
de:Wau Holland fr:Wau Holland it:Wau Holland pt:Wau HollandThis text is licensed under the Creative Commons CC-BY-SA License. This text was originally published on Wikipedia and was developed by the Wikipedia community.
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