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NetSdkModule.dll Export Catalog

This document indexes all 71 exported functions in NetSdkModule.dll, categorized by functional domain.

1. Initialization, Authentication & Session

Ordinal / Function Purpose
NET_SDK_Init Initializes the internal networking stack and memory pools.
NET_SDK_Cleanup Releases all SDK resources and sockets.
NET_SDK_Login Authenticates with the DVR via IP, port, username, password. Returns session ID.
NET_SDK_Logout Gracefully closes the session.
NET_SDK_GetLastError Returns the error code of the last failed operation.
NET_SDK_SetConnectTime Configures socket connection and response timeouts.
NET_SDK_GetOEMInfo Retrieves OEM branding and hardware identifier.

2. Hard Disk Recording, File Search & Download

Ordinal / Function Purpose
NET_SDK_FindFileByName Queries the DVR hard disk catalogue for recorded video files in a time window.
NET_SDK_FindFileByTime Queries the 24-hour recording schedule bitmap for timeline visualization.
NET_SDK_GetFileByName Downloads a specific recorded video file from the internal hard drive storage.
NET_SDK_GetFileByTime Downloads recorded stream covering a specific time range.
NET_SDK_GetFileByTime_V2 Extended time range download method.
NET_SDK_GetFileByTime_V3 High-precision time range download method.
_NET_SDK_GetFileByNameV2@20 Secondary entry point for file download.
NET_SDK_GetDownloadPos Returns the download progress percentage (0 - 100) or error code (< 0).
NET_SDK_StopGetFile Cancels or finalizes an active file download handle.

3. Remote Playback (Streaming Recorded Video)

Ordinal / Function Purpose
NET_SDK_PlayBackByName Starts remote video playback of a file by name.
NET_SDK_PlayBackByName_Ex Extended playback by name with custom buffer size.
NET_SDK_PlayBackByTime Starts remote video playback streaming from a specific timestamp.
NET_SDK_PlayBackByTime_Ex Extended playback by timestamp.
NET_SDK_PlayBackControl Play, Pause, Fast Forward (2x, 4x, 8x), Slow Motion, Seek.
NET_SDK_StopPlayBack Stops playback stream.

4. Live Video Streaming & Snapshots

Ordinal / Function Purpose
NET_SDK_RealPlay Initiates a live video stream from a specified camera channel.
NET_SDK_StopRealPlay Closes an active live video stream.
NET_SDK_PauseRealPlay Temporarily freezes/pauses live stream processing.
NET_SDK_SetRealDataCallBack Registers callback receiving raw H.264 stream frames (NALUs).
NET_SDK_SetRealDataCallBack_EX Extended callback providing timestamps and frame headers.
NET_SDK_DelRealDataCallBack Unregisters stream callback.
NET_SDK_DelRealDataCallBack_EX Unregisters extended callback.
NET_SDK_MakeKeyFrame Requests an immediate I-Frame / IDR keyframe from the encoder.
NET_SDK_CatchPic Captures a live JPEG snapshot and saves directly to disk.
NET_SDK_CatchPicInBuffer Captures a live snapshot directly into a memory buffer.

5. Two-Way Audio (Intercom / Talk)

Ordinal / Function Purpose
NET_SDK_StartVoiceCom_MR Opens a two-way audio voice intercom channel with the DVR.
NET_SDK_StopVoiceCom Terminates the voice communication channel.
NET_SDK_VoiceComSendData Sends local microphone audio packets to the DVR speaker.
NET_SDK_EnableAudioSend Toggles local audio transmission on/off.
NET_SDK_SetTalkMode Configures audio encoding mode (G.711A, G.711U, PCM).

6. PTZ (Pan / Tilt / Zoom) Control

Ordinal / Function Purpose
NET_SDK_PTZControl Sends Pan, Tilt, Zoom, Focus, Iris, and Preset commands to motorized cameras.

7. Device Configuration, Alarms & Maintenance

Ordinal / Function Purpose
NET_SDK_GetDevConfig Queries device configuration (video parameters, network, channels).
NET_SDK_SetDevConfig Applies new device configuration.
NET_SDK_SetConfigOverNet Applies network settings remotely.
NET_SDK_SetSystemDateTime Synchronizes the DVR system clock with external date/time.
NET_SDK_GetDVRWorkState Queries DVR runtime health, channel status, disk status, and temperature.
NET_SDK_StorageManage Partitions, formats, or manages internal hard disk drives.
NET_SDK_ControlDVR Issues system commands (Reboot, Shutdown).
NET_SDK_ClickKey Simulates front panel / IR remote control key presses.
NET_SDK_StartDVRRecord Manually triggers recording on a channel.
NET_SDK_StopDVRRecord Stops manual recording.
NET_SDK_FindDVRLog Queries system and security event logs from the DVR.
NET_SDK_StartUpgrade Initiates remote firmware upgrade.
NET_SDK_SendUpgradeData Transmits firmware update binary blocks.
NET_SDK_GetUpgradeState Monitors firmware upgrade progress.
NET_SDK_CloseUpgradeHandle Closes firmware upgrade handle.

8. Network Device Discovery & Alarms

Ordinal / Function Purpose
NET_SDK_SearchDevice Broadcasts UDP discovery packets to locate DVRs on the local subnet.
NET_SDK_SearchDeviceByRemote Searches for DVRs across remote IP ranges.
NET_SDK_GetDDNSInfo Queries dynamic DNS configuration.
NET_SDK_InitGlink / NET_SDK_AddPreLink P2P / Cloud gateway linkage routines.
NET_SDK_SetupAlarmChan Subscribes to alarm events (Motion, Video Loss, Sensor input).
NET_SDK_CloseAlarmChan Unsubscribes from alarm events.
NET_SDK_StartAlarmCenterListen Listens for inbound alarm notifications from the DVR.
NET_SDK_StopAlarmCenterListen Stops alarm center listener.
NET_SDK_SetDVRMessCallBack Sets callback function for real-time alarm event notifications.
NET_SDK_SendNetAlarmMsg Emits custom alarm message to the DVR.
NET_SDK_SerialRead Reads data from the DVR's RS485 / RS232 serial COM port.
NET_SDK_SerialWrite Writes data to the DVR's RS485 / RS232 serial COM port.