Implementation of H.264 on TMS320DM642
H.264/AVC is the newest video standard to resolve the efficient transmission of video data.Compared to previous generations,it delivers better quality at lower bit rates. However,its computational complexity increases almost exponentially,which is still a problem and has motivated much research into H.264 real-time codec both in industry and academia. H.264 baseline real-time video decoder implementation based on TMS320DM642 and JM86 test code is described in this paper. Firstly,the structure of JM86 is rearranged into three parallel tasks using BIOS multithreading technology. Then,the data structure is redesigned to make full use of the DSP memory and to improve the addressing capability of array and pointer. Finally,lots of time-consuming functions of JM86 are rewritten with assembly language. The system highly speeded up the decoding while maintaining the quality as well. For video sequence of D1 format,the decoding speed reached 25 frames per-second and for CIF format,it reached 60 frames per-second.
Liu,Hui Xu, Ru Liu,Zhi
The Key Laboratory of Underwater Acoustic Communication and Marine Information Technology,Ministry o The Key Laboratory of Underwater Acoustic Communication and Marine Information Technology,Ministry o Central Solution China Electric Power Design Institute,Wuhan,Hubei,China,430071
国际会议
成都
英文
605-609
2008-01-01（万方平台首次上网日期，不代表论文的发表时间）