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The Implement of the H.263 Codec based on ADSP-BF561

Ying Xin

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Abstract

In this paper, an H.263 video codec standard is successfully implemented on the platform of ADSP-BF561, we introduce the performance and characteristic of H.263 concisely, and have a discussion of the optimization way of the H.263 in C code, assem-bly level and storage. Aimed at the characteristic of chip ADSP-BF561, a series of optimizing strategy has been used, in order to let the video codec meet the needs of real-time communication. Finally, we have a test on the system performance in different environ-ments, the result shows that the optimized video codec has a great improvement on run speed, encoding and decoding a CIF picture neatly achieved at real-time.

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What this paper is about

In this paper, an H.263 video codec standard is successfully implemented on the platform of ADSP-BF561, we introduce the performance and characteristic of H.263 concisely, and have a discussion of the optimization way of the H.263 in C code, assem-bly level and storage. Aimed at the characteristic of chip ADSP-BF561, a series of optimizing strategy has been used, in order to let the video codec meet the needs of real-time communication. Finally, we have a test on the system performance in different environ-ments, the result shows that the optimized video codec has a great improvement on run speed, encoding and decoding a CIF picture neatly achieved at real-time.

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Available abstract

In this paper, an H.263 video codec standard is successfully implemented on the platform of ADSP-BF561, we introduce the performance and characteristic of H.263 concisely, and have a discussion of the optimization way of the H.263 in C code, assem-bly level and storage. Aimed at the characteristic of chip ADSP-BF561, a series of optimizing strategy has been used, in order to let the video codec meet the needs of real-time communication. Finally, we have a test on the system performance in different environ-ments, the result shows that the optimized video codec has a great improvement on run speed, encoding and decoding a CIF picture neatly achieved at real-time.

Key concepts: Codec, Computer science, Decoding methods, Code (set theory), Encoding (memory), Chip, Computer hardware, Adaptive Multi-Rate audio codec

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