| 基于TMS320DM642的H.264六抽头滤波插值的优化 |
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| 引用本文： | 何苏勤,延瑾瑜.基于TMS320DM642的H.264六抽头滤波插值的优化[J].电视技术,2009,33(10). |
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| 作者姓名： | 何苏勤 延瑾瑜 |
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| 作者单位： | 北京化工大学DSP与嵌入式系统研究室,北京,100029 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 在分析了H.264压缩编码算法中各个模块耗时情况的基础上,结合TMS320DM642的硬件特性对耗时占总程序将近10%的六抽头滤波插值部分进行优化.分别采用了使用内联函数、数据打包、改变垂直方向插值的数据结构、EDMA乒乓缓冲等方法.实验结果证明,在相同编译选项的情况下,优化以后插值部分的程序运行速度提高了近一倍.
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| 关 键 词： | 六抽头滤波插值 优化 |
Optimization of 6-tap Filter Interpolation in H.264 Based on TMS320DM642 |
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| HE Su-qin,YAN Jin-yu.Optimization of 6-tap Filter Interpolation in H.264 Based on TMS320DM642[J].Tv Engineering,2009,33(10). |
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| Authors: | HE Su-qin YAN Jin-yu |
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| Institution: | HE Su-qin,YAN Jin-yu(DSP and Embedded System Institute,Beijing University of Chemical University,Beijing 100029,China ) |
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| Abstract: | The time-consuming of all modules in H.264 is analyzed, and the profile results show that the 6-tap filter interpolation takes almost 10% time in H.264 encoder.This procedure according to the hardware feature of the TMS320DM642 chip is optimized.The optimizing methods include using intrinsic, packed-data processing, changing the data-base of vertical interpolation procedure and using EDMA PING-PONG buffering.Experiment results show that at the same build options, the processing speed of sub-pixel interpolat... |
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| Keywords: | H 264 TMS320DM642 |
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