DeiLink Parameters setting and its commands

In your code no output queue is enabled. Please check if below params work:

static
Void multich_set_dei_prm(DeiLink_CreateParams *deiPrm)
{
    int i;

    UInt32 outQueIdx = DEI_LINK_OUT_QUE_DEI_SC;

    DeiLink_CreateParams_Init(deiPrm);

    /* Set Output Scaling at DEI based on ratio */
    deiPrm->outScaleFactor[outQueIdx][0].scaleMode = DEI_SCALE_MODE_RATIO;
    deiPrm->outScaleFactor[outQueIdx][0].ratio.widthRatio.numerator = 1;
    deiPrm->outScaleFactor[outQueIdx][0].ratio.widthRatio.denominator = 1;
    deiPrm->outScaleFactor[outQueIdx][0].ratio.heightRatio.numerator = 1;
    deiPrm->outScaleFactor[outQueIdx][0].ratio.heightRatio.denominator = 1;
    for (i = 1; i < DEI_LINK_MAX_CH; i++)
    {
        deiPrm->outScaleFactor[outQueIdx][i] =
                     deiPrm->outScaleFactor[outQueIdx][0];
    }
    deiPrm->enableOut[DEI_LINK_OUT_QUE_DEI_SC]                        = FALSE;
    deiPrm->enableOut[DEI_LINK_OUT_QUE_VIP_SC]                        = FALSE;
    deiPrm->enableOut[DEI_LINK_OUT_QUE_VIP_SC_SECONDARY_OUT]          = FALSE;
    deiPrm->enableOut[outQueIdx]                                      = TRUE;
    deiPrm->tilerEnable[DEI_LINK_OUT_QUE_VIP_SC]          = FALSE;
    deiPrm->comprEnable                                   = FALSE;
    deiPrm->setVipScYuv422Format                          = FALSE;
}

Thanks for your timely response Badri!

I`m sorry to say it still doesn`n work properly;

this is my latest code in accordance with your suggestion, I`m sure that there is out queue enabling in my codes...

-----------------------------------------------------------------

for (i=0; i<2; i++) {
        deiPrm[i].inQueParams.prevLinkId    = captureId;
        deiPrm[i].inQueParams.prevLinkQueId = i;
        deiPrm[i].outQueParams[0].nextLink = displayId[i];
        deiPrm[i].enableOut[0] = TRUE;        //enable output queue DEI_LINK_OUT_QUE_DEI_SC
        for (j=1; j<DEI_LINK_MAX_OUT_QUE; j++)
            deiPrm[i].enableOut[j] = FALSE;
        for (j=0; j<DEI_LINK_MAX_OUT_QUE; j++)
            deiPrm[i].tilerEnable[j] = FALSE;
        deiPrm[i].comprEnable = FALSE;//++++++++++
        deiPrm[i].setVipScYuv422Format = FALSE;//++++++++++
        //for (j=0; j<DEI_LINK_MAX_OUT_QUE; j++)
        for (k=0; k<DEI_LINK_MAX_CH; k++)       //set 5 queue 8 channel scaling mode to 1:1 ratio
        {
            deiPrm[i].outScaleFactor[0][k].scaleMode = DEI_SCALE_MODE_RATIO;
            deiPrm[i].outScaleFactor[0][k].ratio.widthRatio.denominator  = 1;
            deiPrm[i].outScaleFactor[0][k].ratio.widthRatio.numerator    = 1;
            deiPrm[i].outScaleFactor[0][k].ratio.heightRatio.denominator = 1;
            deiPrm[i].outScaleFactor[0][k].ratio.heightRatio.numerator   = 1;
        }//*/
        deiPrm[i].enableLineSkipSc = FALSE;
/*        for (j=0; j<DEI_LINK_MAX_OUT_QUE; j++)
        {
            deiPrm[i].inputFrameRate[j] = 60;
            deiPrm[i].outputFrameRate[j] = 60;
        }
        deiPrm[i].inputDeiFrameRate = 60;
        deiPrm[i].outputDeiFrameRate = 60;//*/
        /*for (j=0; j<DEI_LINK_MAX_OUT_QUE; j++)
            deiPrm[i].numBufsPerCh[j] = 16;*/
        for (j=0; j<DEI_LINK_MAX_OUT_QUE; j++)
            deiPrm[i].generateBlankOut[j] = FALSE;
    }
    deiPrm[0].enableDeiForceBypass = FALSE;
    deiPrm[1].enableDeiForceBypass = FALSE;
--------------------------------------------------------------------

I want to know,

(1) apart from parameter setting , if I should send some commands to control DeiLinks to work properly,

(2) how should I set inputFrameRate,outputFrameRate,inputDeiFrameRate,outputDeiFrameRate parameters,

(3) how can I enable or disable channel(s) in each queue,

I will appreciate your timely response!!!

If you have access to DVR RDK source code, you can refer /dvr_rdk/mcfw/src_linux/mcfw_api/usecases/multich_vcap_vdis.c which does something similar to what you want you can remove links that you dont need like nsf,swms.If you dont have the code I can share the file.

Okay! I have DVR RDK 3.0, I can refer it .

Thanks for your suggestion!