基于DSP的AVS IDCT的研究与实现

Research and Implementation of AVS IDCT on DSP

离散余弦反变换是数字音视频解码算法的关键模块,研究IDCT算法的实现对提高AVS解码器速度有着重要的意义。本文主要研究了IDCT在DSP上的一种快速实现方法。论文选用TI公司TMS320DM642作为开发平台,根据DSP的特性和存储结构的特点,实现了一种适合该芯片的IDCT快速算法,极大提高了AVS解码系统的性能。

Inverse Discrete Cosine Transform is one of the critical modules of AVS Video decoder, the research on the implementation of IDCT has great impact on the decoder system. This paper depicts a method of fast implementation of IDCT on DSP, through takes TMS320DM642 of TI as the development platform, according to the characteristics of DSP, implements a fast algorithm of IDCT on that platform, improve the decoder speed greatly.