![](https://csdnimg.cn/release/download_crawler_static/86299925/bg4.jpg)
5.2.10 获取当前 SDK 的功能信息 NET_DVR_GetSDKAbility .......................................................................... 52
SDK 启用写日志 ..................................................................................................................................................... 52
5.2.11 启用写日志文件 NET_DVR_SetLogToFile ............................................................................................. 52
异常消息回调 ........................................................................................................................................................ 53
5.2.12 注册接收异常、重连等消息的窗口句柄或回调函数 NET_DVR_SetExceptionCallBack_V30 ........... 53
获取错误信息 ........................................................................................................................................................ 54
5.2.13 返回最后操作的错误码 NET_DVR_GetLastError ................................................................................. 54
5.2.14 返回最后操作的错误码信息 NET_DVR_GetErrorMsg ........................................................................ 55
5.3 用户注册 ........................................................................................................................................................ 55
5.3.1 通过解析服务器,获取设备的动态 IP 地址和端口号 NET_DVR_GetDVRIPByResolveSvr_EX ......... 55
5.3.2 用户注册设备 NET_DVR_Login_V40 .................................................................................................... 55
5.3.3 用户注销 NET_DVR_Logout .................................................................................................................. 56
5.4 获取设备能力集 ............................................................................................................................................ 56
5.4.1 获取设备能力集 NET_DVR_GetDeviceAbility ...................................................................................... 56
5.5 实时预览 ........................................................................................................................................................ 57
强制 I 帧 ............................................................................................................................................................... 57
5.5.1 强制 I 帧控制 NET_DVR_RemoteControl ............................................................................................. 57
5.5.2 主码流动态产生一个关键帧 NET_DVR_MakeKeyFrame .................................................................... 58
5.5.3 子码流动态产生一个关键帧 NET_DVR_MakeKeyFrameSub .............................................................. 58
实时预览 ............................................................................................................................................................... 58
5.5.4 实时预览 NET_DVR_RealPlay_V40 ....................................................................................................... 58
5.5.5 停止预览 NET_DVR_StopRealPlay ........................................................................................................ 59
5.5.6 获取预览时用来解码和显示的播放库句柄 NET_DVR_GetRealPlayerIndex ...................................... 59
预览画面叠加字符和图像 .................................................................................................................................... 60
5.5.7 预览画面叠加字符和图像,Linux 下无此接口 NET_DVR_RigisterDrawFun ..................................... 60
预览时播放声音控制 ............................................................................................................................................ 60
5.5.8 设置声音播放模式 NET_DVR_SetAudioMode ..................................................................................... 60
5.5.9 独占声卡模式下开启声音 NET_DVR_OpenSound .............................................................................. 60
5.5.10 独占声卡模式下开启声音 NET_DVR_CloseSound .............................................................................. 61
5.5.11 共享声卡模式下开启声音 NET_DVR_OpenSoundShare ..................................................................... 61
5.5.12 共享声卡模式下关闭声音 NET_DVR_CloseSoundShare ..................................................................... 61
5.5.13 调节播放音量 NET_DVR_Volume ........................................................................................................ 61
实时数据回调和录像 ............................................................................................................................................ 62
5.5.14 注册回调函数,捕获实时码流数据 NET_DVR_SetRealDataCallBack ................................................ 62
5.5.15 注册回调函数,捕获实时码流数据(标准码流)NET_DVR_SetStandardDataCallBack .................. 62
5.5.16 捕获数据并保存到指定的文件中 NET_DVR_SaveRealData ............................................................... 63
5.5.17 停止数据捕获 NET_DVR_StopSaveRealData ........................................................................................ 63
预览抓图 ............................................................................................................................................................... 64
5.5.18 设置抓图模式 NET_DVR_SetCapturePictureMode .............................................................................. 64
5.5.19 预览时,单帧数据捕获并保存成图片 NET_DVR_CapturePicture ..................................................... 64
5.6 云台控制 ........................................................................................................................................................ 64
云台控制操作 ........................................................................................................................................................ 64
5.6.1 云台控制操作(需先启动图像预览)NET_DVR_PTZControl ............................................................ 64
5.6.2 云台控制操作(不用启动图像预览)NET_DVR_PTZControl_Other ................................................. 66
评论0