Real-time video server for embedded apps.
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.
Unlike other streaming solutions, the goal of RVideo is to provide a minimal overhead for an embedded application it is included into:
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Frames are always sent as-is, usually in RAW formats (it is more than enough for most debugging use-cases)
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All frames, not received by a client in time, are dropped
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No any buffering is performed on the server side
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Real-time-safe code is used to minimize the impact on the main application
RVideo streams can be received with clients provided by crate. For ready-to-use
UI, see the rvideo-view crate.
By default, the server uses parking_lot for locking. For real-time applications, the following features are available:
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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.
RVideo is a part of RoboPLC project.