Source code flow optimization for H.264/AVC video decoder implementing on a low-cost embedded system platform

Chih Hung Kuo, Guan Chih Huang, Li Chuan Chang, Bin Da Liu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In H.264/AVC reference software, the decoding process outputs the 4x4 block data from components of the intra prediction and motion compensation to the external memory. The processed data in IDCT&IQ will be transferred to external memory. When applying the de-blocking filter process, the data in external memory will be loaded to deblocking filter and processed data stored back to external memory again. Therefore, the decoding process in reference software wastes a lot of time on unnecessary memory access. In this paper, we use a 4x4 block as an operation unit in the decoding process to reduce memory access. The processing order is changed in the de-blocking filter to be based on decoding order of 4x4 block. By using our proposed method, the average decoding MIPS of one frame are improved by about 3.6 times faster as shown in the simulation results.

Original languageEnglish
Title of host publicationTENCON 2007 - 2007 IEEE Region 10 Conference
DOIs
Publication statusPublished - 2007 Dec 1
EventIEEE Region 10 Conference, TENCON 2007 - Taipei, Taiwan
Duration: 2007 Oct 302007 Nov 2

Publication series

NameIEEE Region 10 Annual International Conference, Proceedings/TENCON

Other

OtherIEEE Region 10 Conference, TENCON 2007
CountryTaiwan
CityTaipei
Period07-10-3007-11-02

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering

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