电子设计工程
電子設計工程
전자설계공정
ELECTRONIC DESIGN ENGINEERING
2012年
8期
183-186
,共4页
H.264%DM6437%整数DCT%量化%移植%优化
H.264%DM6437%整數DCT%量化%移植%優化
H.264%DM6437%정수DCT%양화%이식%우화
H.264%DM6437%integer DCT%quantization%transplantation%optimization
为了实现基于DSP的H.264视频编码器的实时性能,提出了一系列优化实现方法。首先结合TMS320DM6437硬件特点,描述了X264代码向TMS320DM6437平台的移植过程和优化方法,重点介绍了整数DCT变换和量化的线性汇编编写及汇编级优化。实验结果表明,本编码器实现了cif格式视频的实时编码,Dl格式视频的编码速率也达到了18 fps,基本满足视频监控系统中编码器的需求。
為瞭實現基于DSP的H.264視頻編碼器的實時性能,提齣瞭一繫列優化實現方法。首先結閤TMS320DM6437硬件特點,描述瞭X264代碼嚮TMS320DM6437平檯的移植過程和優化方法,重點介紹瞭整數DCT變換和量化的線性彙編編寫及彙編級優化。實驗結果錶明,本編碼器實現瞭cif格式視頻的實時編碼,Dl格式視頻的編碼速率也達到瞭18 fps,基本滿足視頻鑑控繫統中編碼器的需求。
위료실현기우DSP적H.264시빈편마기적실시성능,제출료일계렬우화실현방법。수선결합TMS320DM6437경건특점,묘술료X264대마향TMS320DM6437평태적이식과정화우화방법,중점개소료정수DCT변환화양화적선성회편편사급회편급우화。실험결과표명,본편마기실현료cif격식시빈적실시편마,Dl격식시빈적편마속솔야체도료18 fps,기본만족시빈감공계통중편마기적수구。
In order to achieve the real-time performance of H.264 video encoder based on DSP,a series of optimization methods has been presented.First of all,with TMS320DM6437＇s hardware features,it is described X264 platform code porting to the TMS320DM6437 and optimization methods,focusing on linear assembly preparation and assembly-level optimization of integer DCT transform and quantization integer.Experimental results show that,it accomplishes the real time encoding of cif format video,the Dl format video encoding speed achieves18fps,to basicly meet the needs of the encoder in video monitoring system.
