HI3518ev300

HI3518ev300 HI_MPI_VPSS_SetExtChnAttr 失败 0xA0078003，报错参数设置无

/*******************************************************************************
*@ Description    :配置VPSS的扩展通道
*@ Input          :<vpssGrp>:组号
                    <vpssChn>：扩展通道号
                    <bindChn>：绑定到目标物理通道号
                    <width>：扩展通道图片的宽
                    <height>：扩展通道图片的高
                    <frmRate>扩展通道图片的帧率
*@ Output         :
*@ Return         :成功：0
                    失败：错误码
*@ attention      :该接口在H3518ev300（hi3516ev200）的SDK中设置不正常
*******************************************************************************/
static int vpss_config_ext_chn(VPSS_GRP vpssGrp, VPSS_CHN vpssChn, VPSS_CHN bindChn, int width, int height, int frmRate)
{
    int ret;

    VPSS_EXT_CHN_ATTR_S extAttr = {0};
    /*---#------------------------------------------------------------*/
    printf("----ExtChnAttr:-----------------------------------------\n");
    printf("extAttr.s32BindChn = %d\n",extAttr.s32BindChn);
    printf("extAttr.u32Width = %d\n",extAttr.u32Width);
    printf("extAttr.u32Height = %d\n",extAttr.u32Height);
    printf("extAttr.enVideoFormat = %d\n",extAttr.enVideoFormat);
    printf("extAttr.enPixelFormat = %d\n",extAttr.enPixelFormat);
    printf("extAttr.enDynamicRange = %d\n",extAttr.enDynamicRange);
    printf("extAttr.enCompressMode = %d\n",extAttr.enCompressMode);
    printf("extAttr.u32Depth = %d\n",extAttr.u32Depth);
    printf("extAttr.stFrameRate.s32SrcFrameRate = %d\n",extAttr.stFrameRate.s32SrcFrameRate);
    printf("extAttr.stFrameRate.s32DstFrameRate = %d\n",extAttr.stFrameRate.s32DstFrameRate);
    printf("-------------------------------------------------------\n");
    /*---#------------------------------------------------------------*/


    extAttr.s32BindChn = bindChn;
    extAttr.u32Width = width;//960;
    extAttr.u32Height = height;//540;
    extAttr.enVideoFormat = VIDEO_FORMAT_LINEAR;
    extAttr.enPixelFormat = PIXEL_FORMAT_YUV_SEMIPLANAR_420;
    extAttr.enDynamicRange = DYNAMIC_RANGE_SDR8;
    extAttr.enCompressMode = COMPRESS_MODE_NONE;
    extAttr.u32Depth = 0;
    extAttr.stFrameRate.s32SrcFrameRate = 15;
    extAttr.stFrameRate.s32DstFrameRate = frmRate;


    ret = HI_MPI_VPSS_SetExtChnAttr(vpssGrp, vpssChn, &extAttr);
    if (HI_SUCCESS != ret) 
    {
        ERROR_LOG("HI_MPI_VPSS_SetExtChnAttr(%d, %d) fail: %#x!\n", vpssGrp, vpssChn, ret);
        return HLE_RET_ERROR;
    }

    ret = HI_MPI_VPSS_EnableChn(vpssGrp, vpssChn);
    if (HI_SUCCESS != ret) 
    {
        ERROR_LOG("HI_MPI_VPSS_EnableChn(%d, %d) fail: %#x!\n", vpssGrp, vpssChn, ret);
        return HLE_RET_ERROR;
    }

    return HLE_RET_OK;
}

实现代码如上所述，VPSS 物理通道号是0，已经创建并使能， 扩展通道5绑定到物理通道0，总是报参数设置无效，怎么回事？？？