TI中文支持网您好,我对dm8168里面的sdk开发包内的saloopback.c看的不是很懂,请问saloopback.c是只完成了视频的采集还是可以在显示屏上出现实时的视频信息.
Chris Meng：
你好，
你使用的是EZSDK？如果是，M3部分不提供源码不能修改，如果需要修改，我不建议您使用该软件。
网上还是有些相关信息：
processors.wiki.ti.com/index.php?title=TI81XX_PSP_VIDEO_CAPTURE_Driver_User_Guide
saLoopBack
This application demonstrates simple loop back from capture to display. Application takes input through TVP7002 decoder on VPSS VIP port. Capture buffers are displayed using V4L2 display driver. Sample application uses user pointer buffer mechanism for both capture and display driver. User pointer buffers are taken from FBDEV driver. V4L2 capture driver outputs YUV422 (y and cbcr interleaved) data to memory and display driver displays the same format from memory. Capture driver detects the incoming resolution, configures capture and display driver for same resolution. For e.g. For 1080P60 input resolution, Application sets the buffer size to 1920*1080*2 for both display and capture. Application changes the display resolution to 1080P60 on display using the sysfs entry
