异构多核的全高清H264解码系统设计

Full High-definition H264 Decode System Based on Heterogeneous Multi-core Processor

利用异构多核处理器OMAP4430在多媒体视频编解码上的运算优势,实现了全高清H264视频的实时解码。采用virtio缓存队列和RPMsg消息框架来实现基于异步通知的异构多核间数据通信,并结合TI公司IVA-HD多媒体硬件加速引擎和针对多核进行的合理任务分配机制来提高解码器的工作效率。实验结果表明,此方法实现的解码速度达到35F/s,能够完成对1080P全高清视频的实时解码。

The paper achieves the real-time decoding H264 full high-definition video based on the heterogeneous multi-core processor OMAP4430 which has advantage on handling multimedia video encoding and decoding computation. The design uses virtio buffer queue and RPMsg message framework to realize the data communication between heterogeneous multi-core based on asynchronous notification, and improves the decoder efficiency by using TI company IVA-HD multimedia hardware accelerator and adopting reasonable task alloca- tion mechanism for multi-core. Experimental result shows that the decoder＇s decoding speed can reach 35 frames per second, meeting the requirement of real-time decoding for 1080P full high-definition video.