rvideo

RVideo

Real-time video server for embedded apps.

What is RVideo

RVideo is a library which solves the problem of streaming video from embedded computer-vision applications. Many of such are headless and do not require a dedicated interface, however it is often useful (especially for developers) to see what is happening on the device. RVideo provides a simple API to stream video from your embedded application to a remote client.

How does it work

Unlike other streaming solutions, the goal of RVideo is to provide a minimal overhead for an embedded application it is included into:

• Frames are always sent as-is, usually in RAW formats (it is more than enough for most debugging use-cases)

• All frames, not received by a client in time, are dropped

• No any buffering is performed on the server side

• Real-time-safe code is used to minimize the impact on the main application

Clients

RVideo streams can be received with clients provided by crate. For ready-to-use UI, see the rvideo-view crate.

Locking safety

By default, the server uses parking_lot for locking. For real-time applications, the following features are available:

• locking-rt - use parking_lot_rt crate which is a spin-free fork of parking_lot.

• locking-rt-safe - use rtsc priority-inheritance locking, which is not affected by priority inversion (Linux only).

Note: to switch locking policy, disable the crate default features.

About

RVideo is a part of RoboPLC project.