A hardware/software co-optimization approach for embedded software of MP3 decoder

In order to improve the efficiency of embedded software running on processor core, this paper proposes a hardware/software co-optimization approach for embedded software from the system point of view. The proposed stepwise methods aim at exploiting the structure and the resources of the processor as...

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Bibliographic Details
Published in:Journal of Zhejiang University. A. Science 2007, Vol.8 (1), p.42-49
Main Authors: Zhang, Wei, Liu, Peng, Zhai, Zhi-bo
Format: Article
Language:English
Subjects:
MP3
植入软件
解码器
软硬件共优化
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Summary:In order to improve the efficiency of embedded software running on processor core, this paper proposes a hardware/software co-optimization approach for embedded software from the system point of view. The proposed stepwise methods aim at exploiting the structure and the resources of the processor as much as possible for software algorithm optimization. To achieve low memory usage and low frequency need for the same performance, this co-optimization approach was used to optimize embedded software of MP3 decoder based on a 16-bit fixed-point DSP core. After the optimization, the results of decoding 128 kbps, 44.1 kHz stereo MP3 on DSP evaluation platform need 45.9 MIPS and 20.4 kbytes memory space. The optimization rate achieves 65.6% for memory and 49.6% for frequency respectively compared with the results by compiler using floating-point computation. The experimental result indicates the availability of the hardware/software co-optimization approach depending on the algorithm and architecture.
ISSN:1673-565X
1862-1775
DOI:10.1631/jzus.2007.A0042