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X-Video Bitstream Acceleration (XvBA), designed by AMD Graphics for its
Radeon Radeon () is a brand of computer products, including graphics processing units, random-access memory, RAM disk software, and solid-state drives, produced by Radeon Technologies Group, a division of AMD. The brand was launched in 2000 by ATI Tec ...
GPU A graphics processing unit (GPU) is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, mo ...
and APU, is an arbitrary extension of the X video extension (Xv) for the
X Window System The X Window System (X11, or simply X) is a windowing system for bitmap displays, common on Unix-like operating systems. X provides the basic framework for a GUI environment: drawing and moving windows on the display device and interacting wi ...
on
Linux Linux ( or ) is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged as a Linux distribution, whic ...
operating-systems. XvBA API allows video programs to offload portions of the video decoding process to the
GPU A graphics processing unit (GPU) is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, mo ...
video-hardware. Currently, the portions designed to be offloaded by XvBA onto the GPU are currently
motion compensation Motion compensation in computing, is an algorithmic technique used to predict a frame in a video, given the previous and/or future frames by accounting for motion of the camera and/or objects in the video. It is employed in the encoding of video d ...
(MC) and inverse discrete cosine transform (IDCT), and variable-length decoding (VLD) for
MPEG-2 MPEG-2 (a.k.a. H.222/H.262 as was defined by the ITU) is a standard for "the generic coding of moving pictures and associated audio information". It describes a combination of lossy video compression and lossy audio data compression metho ...
, MPEG-4 ASP (MPEG-4 Part 2, including Xvid, and older DivX and Nero Digital), MPEG-4 AVC (H.264), WMV3, and
VC-1 SMPTE 421, informally known as VC-1, is a video coding format. Most of it was initially developed as Microsoft's proprietary video format Windows Media Video 9 in 2003. With some enhancements including the development of a new Advanced Profile ...
encoded video. XvBA is a direct competitor to
NVIDIA Nvidia CorporationOfficially written as NVIDIA and stylized in its logo as VIDIA with the lowercase "n" the same height as the uppercase "VIDIA"; formerly stylized as VIDIA with a large italicized lowercase "n" on products from the mid 1990s to ...
's Video Decode and Presentation API for Unix (VDPAU) and
Intel Intel Corporation is an American multinational corporation and technology company headquartered in Santa Clara, California. It is the world's largest semiconductor chip manufacturer by revenue, and is one of the developers of the x86 seri ...
's Video Acceleration API (VA API). In November 2009 an XvBA backend for Video Acceleration API (VA API) was released, which means any software that supports VA API will also support XvBA. On 24 February 2011, an official XvBA SDK (Software Development Kit) was publicly released alongside a suite of open source tools by AMD.


Device drivers

Each hardware video
GPU A graphics processing unit (GPU) is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, mo ...
capable of XvBA video acceleration requires a
X11 The X Window System (X11, or simply X) is a windowing system for bitmap displays, common on Unix-like operating systems. X provides the basic framework for a GUI environment: drawing and moving windows on the display device and interacting wit ...
software
device driver In computing, a device driver is a computer program that operates or controls a particular type of device that is attached to a computer or automaton. A driver provides a software interface to hardware devices, enabling operating systems and ot ...
to enable these features. Currently only AMD's ATI
Radeon Radeon () is a brand of computer products, including graphics processing units, random-access memory, RAM disk software, and solid-state drives, produced by Radeon Technologies Group, a division of AMD. The brand was launched in 2000 by ATI Tec ...
graphics cards hardware that have support for Unified Video Decoder version 2.0 or later (primarily the Radeon HD 4000 series or later) are supported by the proprietary ATI Catalyst device driver.


Software supporting XvBA natively

* XBMC Media Center * OpenELEC *
MPlayer MPlayer is a free and open-source media player software application. It is available for Linux, OS X and Microsoft Windows. Versions for OS/2, Syllable, AmigaOS, MorphOS and AROS Research Operating System are also available. A port for DOS usin ...
can be compiled to support XvBA


See also

* Video Acceleration API (VA API) - is an open source software library with XvBA backend support * UVD (Unified Video Decoder) - is the video decoding unit from ATI Technologies to support hardware (
GPU A graphics processing unit (GPU) is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, mo ...
) decode *
Nvidia PureVideo PureVideo is Nvidia's hardware SIP core that performs video decoding. PureVideo is integrated into some of the Nvidia GPUs, and it supports hardware decoding of multiple video codec standards: MPEG-2, VC-1, H.264, HEVC, and AV1. PureVideo oc ...
- the bit-stream technology from
NVIDIA Nvidia CorporationOfficially written as NVIDIA and stylized in its logo as VIDIA with the lowercase "n" the same height as the uppercase "VIDIA"; formerly stylized as VIDIA with a large italicized lowercase "n" on products from the mid 1990s to ...
used in their graphics chips to accelerate video decoding on hardware
GPU A graphics processing unit (GPU) is a specialized electronic circuit designed to manipulate and alter memory to accelerate the creation of images in a frame buffer intended for output to a display device. GPUs are used in embedded systems, mo ...
. * VDPAU (Video Decode and Presentation API for Unix) - competing API by
NVIDIA Nvidia CorporationOfficially written as NVIDIA and stylized in its logo as VIDIA with the lowercase "n" the same height as the uppercase "VIDIA"; formerly stylized as VIDIA with a large italicized lowercase "n" on products from the mid 1990s to ...
* DirectX Video Acceleration (DxVA) API -
Microsoft Windows Windows is a group of several Proprietary software, proprietary graphical user interface, graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, W ...
's accelerated video decoding API * OpenMAX IL (Open Media Acceleration Integration Layer) - a royalty-free cross-platform media abstraction API from the
Khronos Group The Khronos Group, Inc. is an open, non-profit, member-driven consortium of 170 organizations developing, publishing and maintaining royalty-free interoperability standards for 3D graphics, virtual reality, augmented reality, parallel computatio ...
* X-Video Motion Compensation (XvMC) * Distributed Codec Engine () is a
Texas Instruments Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers gl ...
API for the video codec esystem'sn
OMAP The OMAP (Open Multimedia Applications Platform) family, developed by Texas Instruments, was a series of image/ video processors. They are proprietary system on chips (SoCs) for portable and mobile multimedia applications. OMAP devices generall ...
based embedded systems


References


External links


AMD's open source page, containing a link to their XvBA SDK and Tools

XvBA Tools open source library, tools, and example code for accessing XvBA
{{XWinSys Application programming interfaces Video acceleration APIs available on Linux Video acceleration X Window extensions Application layer protocols