一类双核嵌入式系统上无损音频解码器的优化

M. Tadic, Dejan Sajic, J. Kovacevic
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引用次数: 0

摘要

对高质量音频/视频内容日益增长的需求给a /V编解码器的复杂性带来了巨大的压力。另一方面,低端设备需要低成本的平台。在本文中,我们提出了在双核DSP-s上优化无损音频解码器的方法。除了常用的指令并行化和缓冲区可重用性等技术外,本文还介绍了利用嵌入式系统特点的广义分割算法技术。该算法在CS4953xx双核处理器上进行了仿真测试,并在实时系统(avr、蓝光播放器)上进行了验证。估计180 MIPS的音频解码器在第一个核心上被分割为140 MIPS,在第二个核心上被分割为55 MIPS,为整个系统提供了MIPS的最佳解决方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimization of lossless audio decoders on a class of embedded systems with two cores
Increasing demand for High quality Audio/Video content put a great pressure on A/V codec complexity. On the other side, low-end devices demands low cost platforms. In this paper we present methodology for optimization of lossless audio decoders on a dual core DSP-s. In addition to the common techniques such as: instruction parallelization and buffer reusability, we describe Generalized Splitting Algorithm Technique, exploiting features of embedded system. The methodology of proposed algorithm is illustrated on CS4953xx dual core processor, tested in simulator and verified in real time systems (AVRs, Blu-Ray Players). Estimated 180 MIPS for audio decoder was split on 140 MIPS on a first core and 55 MIPS on a second core, providing MIPS vise optimal solution for entire system.
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