rtbuf.c is an implementation of a buffering scheme using the POSIX realtime features. Its aim is to provide smooth playback of MPEG audio streams even on a very heavily loaded machine. It uses many advanced features of the operating system: -

This implementation creates three processes: - The command line parse/control process. It runs continuously as root. - The MPEG decode/playback process. It revokes root rights as soon as it has enabled the realtime features, to minimize the ri

本文首先介绍MPEG-1的标准，然后进行解码算法分析，并基于S3C2410、ⅡS总线、DMA控制器与UDA1341TS芯片，提出了一套完整的MP3播放器的设计方案，包括硬件设计、低层驱动、MP3解码软件设计，并详细介绍了其实现过程。-This paper introduces the MPEG-1 standard, and then decoding algorithm analysis, and based on S3C2410, Ⅱ S bus, DMA controller and UD