scalar用lazy loading模式图像被裁剪

你好，我在用VIP-SC的时候，输入输出的格式均设为了420sp-uv ，但是出来的图像不对，这是我的参数配置，能帮我看看有什么不对吗？

    SclrLink_CreateParams_Init(&sclrPrm);

    sclrPrm.inQueParams.prevLinkId             = gVdecModuleContext.ipcFramesInVpssId;

    sclrPrm.inQueParams.prevLinkQueId          = 0;

    //sclrPrm.outQueParams.nextLink              = gVdecModuleContext.ipcFramesOutVpssId;

    sclrPrm.outQueParams.nextLink              = gVdecModuleContext.ipcFramesOutVpssId;

    sclrPrm.tilerEnable                        = FALSE;

    sclrPrm.enableLineSkipSc                   = FALSE;

    sclrPrm.inputFrameRate                     = 20;

    sclrPrm.outputFrameRate                    = 20;

    sclrPrm.numBufsPerCh                                           = 6;

     #if 0

         sclrPrm.scaleMode                          = DEI_SCALE_MODE_RATIO;

         sclrPrm.outScaleFactor.ratio.widthRatio.numerator = 1;

         sclrPrm.outScaleFactor.ratio.widthRatio.denominator = 1;

         sclrPrm.outScaleFactor.ratio.heightRatio.numerator = 1;

         sclrPrm.outScaleFactor.ratio.heightRatio.denominator = 1;

     #else

         sclrPrm.scaleMode                                                       = DEI_SCALE_MODE_ABSOLUTE;

         sclrPrm.outScaleFactor.absoluteResolution.outWidth               = 320;

         sclrPrm.outScaleFactor.absoluteResolution.outHeight     = 240;

     #endif

         sclrPrm.outDataFormat = SYSTEM_DF_YUV420SP_UV;

         sclrPrm.pathId = SCLR_LINK_SEC0_SC3;