简单介绍了TMS320DM642数字信号处理器的硬件构成,简要给出了DSP平台的程序优化一般流程。着重研究了TMS320DM642平台优化X264视频编码器,包括算法与系统结构优化,乒乓缓存优化,循环体的优化以及DSP汇编实现。
An optimization of X264 video encoder based on TMS320DM642 is proposed to meet the request of real-time encoding.The hardware structure of TMS320DM642 and the flow chart of program optimization on digital signal processor platform are introduced.The optimization of algorithm and system structure optimization,ping-pong buffer optimization,loop optimization and DSP assembly implementation are used to achieve real-time encoding.