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DVR RDK 03.50.00.05, doubts about DEI LINK

system-usecase: VSYS_USECASE_MULTICHN_PROGRESSIVE_VCAP_VDIS_VENC_VDEC

file : multich_progressive_4d1_vcap_venc_vdec_vdis.c

1. deiPrm.tilerEnable[DEI_LINK_OUT_QUE_VIP_SC]          = TILER_ENABLE;

What is the role of "TILER_ENABLE" ?

What conditions will use it ?

2. DeiLink_CreateParams in API GUIDE :

DEI can have upto two outputs

  • Output from DEI scaler
  • Output from VIP scaler 

setVipScYuv422Format = TRUE, set data format of VIP-SC to YUV422I

setVipScYuv422Format = FALSE, set data format of VIP-SC to YUV420SP 

Does it mean DEI always output YUV422 format and VIP can be config , no matter DEI input format is YUV420 or YUV422 ?