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NEXT_CAPTURE_ID

pixelflux

Static NEXT_CAPTURE_ID 

Source 
pub(crate) static NEXT_CAPTURE_ID: AtomicU64
Expand description

Hands each ScreenCapture a unique, monotonic id — the token WAYLAND_OWNERS compares to decide which instance is allowed to stop a display’s capture. Starts at 1 so 0 can mean “no owner”.