海思3516a开发板视频采集,底场中断全部丢失采不到问题
风入宋 2017-02-26 08:49:59 使用北京博航3516a 开发板,HDMI输入接口,连接PC HDMI输出接口,运行demo例程进行视频采集及存文件.
发现当程序配置设置为1280*768 逐行模式,h265编码时:
视频可以正常采集,存下的文件在pc上面播放也正常,但查看/proc文件系统调试信息:
cat /proc/umap/vi
发现异常,BotLos底场中断全部丢失,而顶场中断计数正常,ccErrN计数与BotLos底场中断丢失计数相等.
这是什么原因,请大家献策.
打印如下:
VI-VPSS is offline.
-----VI DEV ATTR---------------------------------------------------------------
Dev IntfM WkM ComMsk0 ComMsk1 ScanM AD0 AD1 AD2 AD3 Seq DPath DType DRev CapX CapY CapW CapH
0 BT1120S 1Mux ff000000 ff0000 P -1 -1 -1 -1 UVUV ByPass YUV N 0 0 1920 1080
-----VI PHYCHN ATTR------------------------------------------------------------
PhyChn CapX CapY CapW CapH DstW DstH CapSel Mirror Flip IntEn PixFom SrcRat DstRat Comp
0 0 0 1280 768 1280 768 both N N Y sp420 60 30 N
-----VI PHYCHN STATUS 1----------------------------------------------------------
PhyChn Dev IntCnt VbFail LosInt TopLos BotLos BufCnt IntT SendT Field Stride
0 0 138558 0 69280 0 69280 1 7 88 frm 1280
-----VI PHYCHN STATUS 2---------------------------------------------------------
PhyChn MaxIntT IntGapT MaxGapT OverCnt LIntCnt ThrCnt AutoDis CasAutD TmgErr ccErrN IntRat
0 213 16718 19084463 4 0 1 0 0 0 69280 60
-----VI CHN STATUS-------------------------------------------------------------
ViChn bEnUsrP FrmTime FrmRate SendCnt SwLost Rotate Depth
0 N 33441 30 69278 0 NONE 0