文件示例：

/*********************************
*函式功能：開啟VI裝置
*輸出引數：
*返回值：成功為0 失敗非0
*********************************/
HI_S32 enable_VI()
{
    HI_S32 s32Ret;         //返回值
    VI_DEV ViDev = 0;     //VI裝置號
    VI_CHN ViChn = 0;     //VI通道號
    VI_DEV_ATTR_S stDevAttr; //視訊輸入裝置的屬性
    VI_CHN_ATTR_S stChnAttr; 

    /*配置視訊輸入裝置的屬性
 
*/
    stDevAttr.enIntfMode =VI_MODE_BT1120_STANDARD;         //介面模式
    stDevAttr.enWorkMode = VI_WORK_MODE_1Multiplex;     //124路複合工作模式
    stDevAttr.au32CompMask[0] = 0xFF000000;             //分量掩碼
    stDevAttr.au32CompMask[1] = 0xFF0000; 
    stDevAttr. enClkEdge = VI_CLK_EDGE_SINGLE_UP;         //時鐘邊沿取樣模式
    stDevAttr.s32AdChnId[0
 
] = -1;                         //取值範圍
    stDevAttr.s32AdChnId[1] = -1; 
    stDevAttr.s32AdChnId[2] = -1;
    stDevAttr.s32AdChnId[3] = -1; 
    s32Ret = HI_MPI_VI_SetDevAttr(ViDev, &stDevAttr);     //設定VI裝置屬性
    if (s32Ret != HI_SUCCESS) 
    { 
        printf("Set dev attributes failed with error code %#x!\n
 
", s32Ret); 
        return HI_FAILURE; 
    } 

    s32Ret = HI_MPI_VI_EnableDev(ViDev);         //使能VI裝置
    if (s32Ret != HI_SUCCESS) 
    { 
        printf("Enable dev failed with error code %#x!\n", s32Ret); 
        return HI_FAILURE; 
    } 

    /*配置VI通道屬性*/
    stChnAttr.stCapRest.s32X = 0;         //捕獲區域起始座標
    stChnAttr.stCapRect.s32Y = 0; 
    stChnAttr.stCapRect.u32Width = 1920;     //捕獲區域寬高
    stChnAttr.stCapRect.u32Height = 1080; 
    stChnAttr.stDestSize.u32Width = 1920;     //目標影象大小
    stChnAttr.stDestSize.u32Height = 1080; 
    stChnAttr.enCapSel = VI_CAPSEL_BOTH;         //幀場選擇
    stChnAttr.enScanMode = VI_SCAN_PROGRESSIVE;     //輸入掃描模式 隔行or逐行
    stChnAttr.enPixFormat = PIXEL_FORMAT_YUV_SEMIPLANAR_422;     //畫素儲存格式
    stChnAttr.bMirror = HI_FALSE;         //是否水平翻轉
    stChnAttr.bFlip = HI_FALSE;         //是否垂直翻轉
    stChnAttr.s32SrcFrameRate = -1;     //原始幀率
    stChnAttr.s32DstFrameRate = -1;     //目標幀率
    s32Ret = HI_MPI_VI_SetChnAttr(ViChn,&stChnAttr); 
    if (s32Ret != HI_SUCCESS) 
    { 
        printf("Set chn attributes failed with error code %#x!\n", s32Ret); 
        return HI_FAILURE; 
    } 

    s32Ret = HI_MPI_VI_EnableChn(ViChn);     //使能VI通道
    if (s32Ret != HI_SUCCESS) 
    { 
        printf("Enable chn failed with error code %#x!\n", s32Ret); 
        return HI_FAILURE; 
    } 

/* now, vi is capturing images, you can do something else ... */ 

    s32Ret = HI_MPI_VI_DisableChn(ViChn);         //關閉通道
    if (s32Ret != HI_SUCCESS)
    { 
        printf("Disable chn failed with error code %#x!\n", s32Ret); 
        return HI_FAILURE; 
    } 

    s32Ret = HI_MPI_VI_DisableDev(ViDev);         //關閉裝置
    if (s32Ret != HI_SUCCESS) 
    { 
        printf("Disable dev failed with error code %#x!\n", s32Ret); 
        return HI_FAILURE; 
    }
}