基于DM6446的视频采集播放系统的研究与实现
首发时间:2011-12-28
摘要:TMS320DM6446是TI公司推出的第一款Davinci系列处理器,专门用于音视频处理。在视频处理过程中,采集和播放是其不可或缺的部分。本文在视频采集驱动V4L2,视频播放驱动Fbdev基础上,完成了视频采集与播放的整个流程,并着重分析与实现了原始视频数据从采集缓冲区到显示缓冲区复制的三种软件方案,分析对比各自的特点,对Davinci系统的开发者具有一定的参考价值。
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Research and Implementation for the Video Capture and Display System based on DM6446
Abstract:TMS320DM6446 is firstly introduced as one of the Davinci seies chips by TI(Texas Instruments)company which is expert at processing audio and video data in December,2005. During the procedure of video process, capture and loopback for video is the basic functional module. In this paper, based on the V4L2(Video for Linux 2) driver and Frame Buffer driver(FBdev),the entire process for video capture and loopback is completed, then three kinds of methods for original video data moving from.capture to display buffer is analysised and implemented in details.At last a conclusion is given after comparing the characteristics of each other,which may supply some reference value for application developers on Davinci platform.
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