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Confusion about dup Link in IPNC RDK

Zhao Shui
Intellectual 910 points

Hi, everyone

I'm using IPNC RDK ver 3.5 for DM8127. Now I met a problem about dup link.

I know that dup link only copy frame info rather than the frame itself,so sometimes when you change its outQue0 frame, outQue1 will also be affected,am I right?

And here is my question: In what case change a nextlink of duplink will affect another link, and in what case will not?

Is it correct to say that only when the nextlink process directly on the frame received from duplink, the other will be affected.If I only used the frame passed by duplink to generate another frame or results,the other will not be affected.

especially

case 1:

duplink----->enc link

           ------>sclr link      will sclr link receive encoded frame?

case 2:

duplink----->sclr link

           ------>display       will display link receive scaled frame?

regards,

Zhao

  • 0
    TI__Guru* 80190 points

    Hello,

    I notified the IPNC team to help here.

    Best Regards,

    Margarita

  • 0 in reply to Margarita Gashova
    Intellectual 910 points

    Hi, everyone

    I realize it'll be better if I provide my usecase design here

    In my usecase I want to achieve two goals:

    1.Encode frame from camera link using Enclink and send encoded frames to A8

    2.Do ALG in Alglink on DSP using frame from camera link and then send results to A8

    But the encoded frame should be 1920*1280 while the frame sent to alglink should be 352*288.

    I have two plans to solve this problem but I don't know which one is correct:

    PLAN A:

    Since camera link has two outQues, I want to set outQue0 to 1920*1280 while outQue1 352*288, and using outQue0 to encode while outQue1 to do ALG

    PLAN B:

    I want to add a Duplink next to camera link and divide original 1920*1080 stream into two streams.The 1st stream is 1920*1080 and connected to enclink( IpcVpssOut link is more accurate) , the 2nd stream will be connected to Sclr link to scale from 1920*1080 to 352*288, but I'm not sure if these two streams will corrupt each other's frame and cause problems.

    Hope someone can give some advice, thank you very much.

    Regards,

    Zhao