| 基于TMS320C6416的MPEG-2/MPEG-4 视频流转码器设计与实现 |
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| 引用本文： | 陈俊江,黄增锋,覃团发. 基于TMS320C6416的MPEG-2/MPEG-4 视频流转码器设计与实现[J]. 电子工程师, 2006, 32(3): 18-20,30 |
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| 作者姓名： | 陈俊江 黄增锋 覃团发 |
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| 作者单位： | 广西大学计算机与电子信息学院,广西壮族自治区,南宁市,530004 |
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| 基金项目： | 广西科学研究与技术开发计划项目，广西新世纪十百千人才工程基金 |
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| 摘 要： | 目前的视频流转码大致可以分为空域(像素域)转码和压缩域(DCT域)转码两种方法。针对目前最流行的MPEG-2和MPEG-4两个压缩编码标准,采用级联空域转码方案,并且基于TMS320C6416 DSP芯片,探讨了MPEG-2/MPEG-4视频流转码的硬件实现方法。在设计中,通过PCI消息机制,解决了DSP与PC机的数据传输“瓶颈”问题,同时合理分配存储器,并采取各种优化技术,近实时地实现了MPEG视频流转码。
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| 关 键 词： | 视频流转码 TMS320C6416 MPEG-2 MPEG-4 |
| 收稿时间： | 2005-08-02 |
| 修稿时间： | 2005-08-022005-10-10 |
Design and Implementation of MPEG-2/MPEG-4 Video Stream Transcoding Based on TMS320C6416 |
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| CHEN Jun-jiang,HUANG Zeng-feng,QIN Tuan-fa. Design and Implementation of MPEG-2/MPEG-4 Video Stream Transcoding Based on TMS320C6416[J]. Electronic Engineer, 2006, 32(3): 18-20,30 |
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| Authors: | CHEN Jun-jiang HUANG Zeng-feng QIN Tuan-fa |
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| Affiliation: | Guangxi University, Nanning 530004, China |
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| Abstract: | The technology of video stream transcoding can be divided into two types: spatial domain(pixel-domain) and compressed domain(DCT-domain).Focussing on the two most popular compression encoding standards: MPEG-2/MPEG-4,a cascaded space-domain transcoding scheme is adopted in this paper.Basing on TMS320C6416 DSP,the implementation method of MPEG-2/MPEG-4 video stream transcoding on hardware is discussed in this paper.In the design,through solving the bottleneck problem of high-speed data exchange between PC and DSP by PCI mode,distributing memory reasonably,adopting various optimization techniques,a near real-time implementation of MPEG video stream transcoding is achieved. |
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| Keywords: | video stream transcoding TMS320C6416 MPEG-2 MPEG4 |
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