struct ImageId

Unique identifier for an image registered with the display coordinator.

[`fuchsia.hardware.display.types/INVALID_DISP_ID`] represents an invalid

value.

Values are managed by [`fuchsia.hardware.display/Coordinator`] clients, to

facilitate feed-forward dataflow.

Valid values uniquely identify "live" images within a Display Coordinator

connection. The identifier of an image destroyed via

[`fuchsia.hardware.display/Coordinator.ReleaseImage`] can be reused in a

subsequent [`fuchsia.hardware.display/Coordinator.ImportImage`] call.

An image is a memory buffer whose bytes have a fixed interpretation as an

array of pixels. Memory buffers are managed by sysmem, and are accessed by

the display stack using a [`fuchsia.sysmem/BufferCollection`]. The buffer's

interpretation is described by an

[`fuchsia.hardware.display.types/ImageConfig`].