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This article mainly explains "Qt how to achieve picture and video TCP/UDP network transmission", the content of the article is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "Qt how to achieve picture and video TCP/UDP network transmission" bar!

I. functional features

Multi-threaded sending and receiving picture data and parsing picture data, do not card the main interface.

Both TCP and UDP modes are supported, and client-side classes and server-side classes of TCP mode and UDP mode are encapsulated.

The picture transmission client supports sending to multiple servers at the same time, which can be sent to multiple student machines on the same screen as a teacher.

At the same time, multiple clients are supported to send pictures to the server at the same time, and each connection on the server will automatically open a thread to send and receive and parse the picture data.

Custom label control signal slot mechanism to draw pictures, do not card the main interface.

With its own heartbeat mechanism to judge offline, automatically reconnect the server, you can set the timeout.

Each message has a unique message ID uuid. After receiving it, the server will return the corresponding uuid message to indicate receipt. The client can determine that the server parsing is successful based on this return message, and there is no need to send it again. This ensures that the outgoing data server receives and parses successfully.

Each message has a unique picture ID flag, which is equivalent to the ID number, according to which interface it needs to be parsed and displayed.

The picture is sent in the string format of base64, and the receiving end receives the picture data of the base64 string and regenerates the picture after decoding.

All data transceivers have signals to be sent out to facilitate output and viewing.

All provide singleton classes to facilitate direct use without new when there is only one.

Using the custom xml protocol, you are free to expand other attribute fields, such as bringing image content, etc.

Second, the effect picture

Thank you for reading, the above is the content of "Qt how to achieve picture and video TCP/UDP network transmission". After the study of this article, I believe you have a deeper understanding of how Qt realizes picture and video TCP/UDP network transmission, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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