【作者】 祝炎明； 何加铭； 范志蔚；

【Author】 Zhu Yanming~(1,2) He Jiaming~(1,2) Fan Zhiwei~(1,2) 1 Institute of Communication Technology,Ningbo 315211,China 2 Engineering Research Center of Multimedia Communication,Ministry of Education,Ningbo 315211,China

【机构】 宁波大学通信技术研究所； 多媒体通信教育部工程研究中心；

【摘要】 针对目前手持多媒体播放器对RealMedia格式支持不足,本文在对RealMedia格式,Qtopia中Mediaplayer的解码器插件进行分析的基础上,把RealMedia解码器作为播放器插件在基于i.MX21的手持多媒体播放器上进行了移植,并着重对解码器性能进行了优化,实现了基于硬件的色彩空间转换和图像缩放,显著提升了解码器性能。更多还原

【Abstract】 Be dead against the lack of supporting RealMedia format in portable multimedia player.This paper analyzed the RealMedia format and the decoder plugin of Mediaplayer in Qtopia,and based on this,this paper ported RealMedia decoder as a plugin to portable multimedia player which based on i.MX21.Then emphasized on the optimization of the decoder performance,and realized the color space converting and image scaling based on hardware,which improved the performance of decoder remarkably.更多还原