capture rgb888 convert to yuv420/422l

你好；

        你有按下面进行配置吗？

    for(vipInstId=0; vipInstId<capturePrm.numVipInst; vipInstId++)
    {
        pCaptureInstPrm                     = &capturePrm.vipInst[vipInstId];
        pCaptureInstPrm->vipInstId          = (SYSTEM_CAPTURE_INST_VIP0_PORTA+vipInstId)%SYSTEM_CAPTURE_INST_MAX;
        pCaptureInstPrm->videoDecoderId     = SYSTEM_DEVICE_VID_DEC_TVP5158_DRV;
        pCaptureInstPrm->inDataFormat       = SYSTEM_DF_RGB24_888;
        pCaptureInstPrm->standard           = SYSTEM_STD_MUX_4CH_D1;
        pCaptureInstPrm->numOutput          = 1;

        pCaptureOutPrm                      = &pCaptureInstPrm->outParams[0];
        pCaptureOutPrm->dataFormat          = SYSTEM_DF_YUV422I_YUYV;
        pCaptureOutPrm->scEnable            = FALSE;
        pCaptureOutPrm->scOutWidth          = 0;
        pCaptureOutPrm->scOutHeight         = 0;
        pCaptureOutPrm->outQueId            = 0;
    }