tencent cloud

All product documents
Basic Introduction
Last updated: 2025-02-11 16:50:11
Basic Introduction
Last updated: 2025-02-11 16:50:11

Scope of Application

This SDK is used for remote device (e.g. cockpit), suitable for Linux and Windows 64-bit systems, and provides access in the form of so, dll dynamic link libraries.

Main Functions

This SDK provides low-latency audio, video and control/status data transmission for remote real-time operation scenarios. The main functions of SDK are given as follows:

Video Rendering

Render video in a window with a specified handle and automatically respond to window scaling events.

Video Decoding

Supports decoding of video formats such as H264, H265 and AV1 with hardware decoder support.

Video Transmission

Supports the transmission of encoded video streams such as H264, H265, and AV1, with anti-weak network and low-latency transmission capabilities.

Binary Data Transmission

Supports the transparent transmission of binary data from remote device to field device.

Stream Management

The SDK can dynamically manage the stream push status of the field device according to viewing requirements.

Video Latency and Link Status Reporting

The SDK can monitor video latency and link status, and report the corresponding status data through a callback interface.

Basic Concepts

Device ID

Divided into field device (e.g. vehicle) ID and remote device (e.g. cockpit) ID. The device ID is unique, and used to identify the device identity, . If there are two devices with the same device ID connected to the signal server, the server will kick out one device according to the login sequence and the force-login option.

Video Stream ID

Used to identify the video stream index of the field device, and the range of values is [0, size of the streams_config array). When the remote device pulls the video stream, it specifies the video stream to be pulled through the field device ID + video stream ID.

Receiver Handle ID (conn_fd)

Used to identify the video stream receiver of the remote device, and the range of values is [0, max_streams). The video stream receiver is linked with the field device video stream and the video rendering window. When pulling the video stream, you need to specify the corresponding video stream receiver to receive the stream; The following is the process of receiving the video stream.
field device video stream >> remote device video stream receiver >> video rendering window

Video Window Handle

Used to identify the video rendering window, which is a pointer to the video window, such as HWND for windows platform. Through the video window handle, the SDK can render the video image on the specified video window.

Operation Permisson

The permission is used to determinde whether the remote device can control the field device, e.g. send the control data and audio data to the field device. The operation permission is managed by the operation permission SDK API.

Session Permisson

The permission is used to determinde whether the remote device can watch the field device, and get the info/video/data from the field device. The session permission is managed by the cloud API or the cloud console.

Configuration File

It is a JSON format file (i.e. config.json), which contains the initialization configuration of the SDK.
Was this page helpful?
You can also Contact Sales or Submit a Ticket for help.
Yes
No

Feedback

Contact Us

Contact our sales team or business advisors to help your business.

Technical Support

Open a ticket if you're looking for further assistance. Our Ticket is 7x24 avaliable.

7x24 Phone Support