I am not clear on what you want to do. Pls provide more details.
Do you want the SwMs blank window to display blue color ?
- The system blank video frame is common and used in several modules like SwMs and display. If you want to change it to blue color modify
/dvr_rdk/mcfw/src_bios6/links_m3vpss/swMs/swMsLink_drv.c
Int32 SwMsLink_fillBlankDataPattern(FVID2_Format * pFormat, FVID2_Frame * pFrame)
to set whatever color you want.
Are you currently seeing the last video and instead you want to show blank video frame ?
- If you detect video loss you can invoke Vdis_flushSwMs setting holdLastFrame = FALSE which will blank the window.