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{{Infobox software
| name = libdce
| title = libdce
| logo = 
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| released = 
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| programming language = [[C (programming language)|C]]
| operating system = [[Unix-like]]
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| genre = [[Library (computing)|Library]]
| license = [[BSD licenses|Revised BSD License]] and some additional terms
| website = {{URL|https://github.com/robclark/libdce}}
}}
[[File:Texas Instruments Ducati.svg|thumb|The [[Texas Instruments Ducati|TI Ducati]] [[Semiconductor intellectual property core|SIP core]] does video acceleration and accelerated image processing. The actual IC doing the calculations is controlled by software running on two [[ARM Cortex-M3|Cortex-M3]] microcontrollers. The operating system (running on the host CPU) only needs a '''[[Shim (computing)|shim]]''' to interface with the subsystem.]]
'''Distributed Codec Engine (DCE)''' is an [[Application programming interface|API]] and its implementation as [[Library (computing)|software library]] ("''libdce''") by [[Texas Instruments]]. The library was released under the [[BSD licenses|Revised BSD License]] and some additional terms.

It enables and provides remote access to hardware acceleration for audio and video decoding on the IVA-HD in [[OMAP|OMAP4]]-based platforms via a syslink/rcm [[Shim (computing)|shim]] layer accessing the OMAP's Codec Engine API codec interface on the co-processor (Ducati/M3) from the host under [[Linux]] without needing [[OpenMAX]].<ref>{{cite web |url=https://www.phoronix.com/scan.php?page=news_item&px=MTAzNjY |title=libdce: The Distributed Codec Engine |date=2012-01-03 |work=[[Phoronix]]}}</ref><ref name="libdce and gst-ducati">{{cite web |url=https://bloggingthemonkey.blogspot.com/2010/11/announcing-libdce-and-gst-ducati.html |title=Announcing libdce and gst-ducati |date=2010-11-27 |work=Rob Clark}}</ref><ref>http://pandaboard.org/content/libdce libdce</ref> The "Ducati subsystem" comprises two [[ARM Cortex-M3]] processors (CPUs), and the [[Application-specific integrated circuit|ASICs]] IVA-HD and ISS.<ref>{{cite web| url=http://omappedia.org/wiki/Ducati_For_Dummies |title=The Ducati subsystem – Introcution}}</ref>

== Software supporting DCE ==
[[File:GStreamer and TI DMAI.svg|thumb|[[GStreamer]] uses the ASICs of Ducati]]
* gst-ducati, a [[GStreamer]] plugin for OMAP4 using libdce<ref name="libdce and gst-ducati" /><ref>{{cite web |url=https://github.com/robclark/gst-ducati |title=gst-ducati on github|website=[[GitHub]] }}</ref>
* omapfbplay, a video player for OMAP using [[Video4Linux]] (V4L)<ref>{{cite web |url=http://git.mansr.com/?p=omapfbplay |title=Video player for OMAP framebuffer}}</ref>

== See also ==
* [[OMAP]] SoC hardware by [[Texas Instruments]] that supports libdce
* [[Video Acceleration API|Video Acceleration API (VA API)]] – an alternative video acceleration API for Linux/UNIX operating-system.
* [[VDPAU|VDPAU (Video Decode and Presentation API for Unix)]]
* [[X-Video Bitstream Acceleration|X-Video Bitstream Acceleration (XvBA)]]
* [[X-Video Motion Compensation]] (XvMC)
* [[DirectX Video Acceleration|DirectX Video Acceleration (DxVA) API]] - [[Microsoft Windows]] analogue
* [[Video Decode Acceleration Framework]] is [[Apple Inc.]]s API for hardware-accelerated decoding of H.264 on [[macOS]]
* [[VideoToolbox]] is an API from [[Apple Inc.]] for hardware-accelerated decoding on [[Apple TV (device)|Apple TV]] and [[macOS]]<ref>{{cite web|accessdate=2018-08-05|title=VideoToolbox - Apple Developer Documentation|url=https://developer.apple.com/documentation/videotoolbox|website=developer.apple.com}}</ref>
* [[OpenVideo Decode|OpenVideo Decode (OVD)]] – a new open cross-platform video acceleration API from [[AMD]].<ref>http://developer.amd.com/gpu/AMDAPPSDK/assets/OpenVideo_Decode_API.PDF {{Webarchive|url=https://web.archive.org/web/20110409080000/http://developer.amd.com/gpu/AMDAPPSDK/assets/OpenVideo_Decode_API.PDF |date=2011-04-09 }} OpenVideo Decode (OVD) API</ref>
* [[OpenMAX IL|OpenMAX IL (Open Media Acceleration Integration Layer)]] - a royalty-free cross-platform media abstraction API from the [[Khronos Group]]
* [[Nvidia PureVideo]] - the [[Stream processing|bit-stream technology]] from [[NVIDIA]] used in their graphics chips to accelerate video decoding on hardware [[Graphics processing unit|GPU]].
* [[Unified Video Decoder|UVD (Unified Video Decoder)]] - the [[Stream processing|bit-stream technology]] from [[ATI Technologies]] used in their graphics chips to accelerate video decoding on hardware [[Graphics processing unit|GPU]].

== License ==
It uses a custom vanity license. It does not use an established free open source software license.

== References ==
{{reflist|2}}

== External links ==
* https://github.com/robclark/libdce
* http://omappedia.org/wiki/DistributedCodecEngine

[[Category:Application programming interfaces]]
[[Category:Application layer protocols]]
[[Category:Video acceleration]]
[[Category:Video acceleration APIs available on Linux]]

Distributed Codec Engine - Revision history

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