Product category:
Embedded Software and Operating Systems
News Release from: IMEC | Subject: IMEC SVC code
Edited by the Electronicstalk Editorial
Team on 17 January 2008
Video decoding receives efficiency boost
The application of data transfer and storage exploration transformations enabled intelligent re-use of the memory footprint.
IMEC has improved its source-code for standard-compliant scalable video decoding (SVC = H.264 extension), now performing 20 times faster and using only a tenth of the memory footprint compared to the SVC standard reference code These results were obtained by further optimising the code, mainly through the removal of redundant code and function calls as well as through the improved memory use of IMEC's earlier SVC source code
This article was originally published on Electronicstalk on 20 Feb 2002 at 8.00am (UK)
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This code was already two times faster than the reference code.
The first optimisation was based on (re)structuring the SVC code into more concise functional blocks.
This facilitated extra optimisations, including removing redundant code and function calls.
The application of DTSE (data transfer and storage exploration) transformations enabled intelligent (re)use of the memory footprint.
As a result of the increased data locality, the total memory footprint was significantly reduced to one tenth, to much better cache behaviour and higher performance.
This will also contribute to reducing the silicon cost area when using SVC functions for ASIC (application-specific integrated circuit) implementations.
The optimised decoder has been benchmarked against the reference decoder on a normal end user PC platform.
Compliancy to the SVC standard was also verified.
The configurations that were tested included the three scalability types of SVC, being spatial, temporal and quality scalability.
The optimised source code is available as starting point for product development by industry via a licensing program and can be delivered as source code.
The code is suitable for system integrators of mobile devices or telecommunication applications and fabless IC makers, to help them extend their multimedia reference platforms to comply with the SVC standard.
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