基于ARM平台的高清视频信号编解码器优化设计

Optimization design of high definition video signal codec based on ARM platform

摘要:

由于原始编解码器存在编解码速度慢，耗费时间长的问题，无法满足人们需求，提出了基于ARM平台的高清视频信号编解码器优化设计。在ARM平台下对接口进行分离，从代码和结构两方面对编码器进行精简，进而对相应程序进行优化；针对解码器优化过程，优化C级别和熵解码，并移除多余结构体以及冗余函数，重新建立哈夫曼查表，完成高清视频信号快速解码。通过实验验证结果可知，优化后的编解码器速度快，且耗费时间较短。

Abstract:

Because the original codec is slow and time-consuming, it can't meet the needs of people. A design of HDTV codec based on ARM platform is proposed. Separation of the interface in the ARM platform, streamline the encoder from two aspects of code and structure, and the corresponding program is optimized; for the decoder optimization process, the optimization of C level and entropy decoding, and remove the redundant structure and redundant function, re establishment of Huffman table, complete HD video signal fast decoding. The experimental results show that the optimized codec has a fast speed and a shorter time consuming.