An implementation of 2D IDCT using AltiVec

被引:0
|
作者
Lu, SJ [1 ]
Zhang, J [1 ]
Zhang, X [1 ]
Zhao, CJ [1 ]
机构
[1] Motorola Australian Res Ctr, Sydney, NSW 1455, Australia
关键词
AltiVec; pre-scaling for IDCT; SIMD parallel processing and data manipulation;
D O I
暂无
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
This paper explores the key functions of AltiVec through an implementation of 2D IDCT algorithm. By providing a benchmark for video processing, the advantage of using SIMD-style of parallel processing technique has been demonstrated. Besides a variety of instructions available for parallel arithmetic computations, a solution for efficiently reorganising data for parallel processing is also provided by AltiVec. The implementation resulted in a speedup of 10 times compared to its scalar version.
引用
收藏
页码:17 / 20
页数:4
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