| 基于XvMC的MPEG-2硬件解码的研究与实现 |
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| 引用本文： | 刘海恩,武频.基于XvMC的MPEG-2硬件解码的研究与实现[J].计算机工程与设计,2010,31(10). |
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| 作者姓名： | 刘海恩 武频 |
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| 作者单位： | 上海大学,计算机工程与科学学院,上海,200072 |
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| 基金项目： | 上海市重点学科建设基金 |
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| 摘 要： | 研究了如何利用GPU来加速视频解码,概述了MPEG-2视频解码的系统框架,论述了MPEG-2视频解码在Linux下以XvMC(X video motion compensation)为API并基于通用可编程GPU的实现过程,重点讨论了MPEG-2视频解码中IDCT(inverse discrete cosine transform)和运动补偿的实现,提出了新的优化算法.MPEG-2视频解码算法具有一定的通用性,实验结果表明,与传统的解码方式相比,该解码器不仅能加速视频解码,还能有效降低CPU的利用率和电脑的功耗.
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| 关 键 词： | 硬件解码 动态视频标准2 运动补偿 反离散余弦变换 X视频运动补偿 |
Research and implementation of MPEG-2 hardware decoding based on XvMC |
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| LIU Hai-en,WU Pin.Research and implementation of MPEG-2 hardware decoding based on XvMC[J].Computer Engineering and Design,2010,31(10). |
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| Authors: | LIU Hai-en WU Pin |
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| Affiliation: | LIU Hai-en,WU Pin(School of Computer Engineering , Science,Shanghai University,Shanghai 200072,China) |
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| Abstract: | The study on leveraging the GPU to accelerate the video decoding is presented,the system framework of decoding of MPEG-2(moving pictures experts group) is summarized,the realization of MPEG-2 hardware decoding using XvMC(X video motion compensation) based on general programmable GPU is expounded,and especially the implementation and optimization of motion compensation and IDCT are discussed.The algorithm of MPEG-2 decoding can be used in many situations.The experimental results show that significant speed-u... |
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| Keywords: | hardware decoding MPEG-2 motion compensation IDCT XvMC |
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