Trait SliceSource 

pub trait SliceSource: Send {
    // Required methods
    fn sensor_size(&self) -> (usize, usize);
    fn timestamp_scale_ms(&self) -> f64;
    fn n_events(&self) -> usize;
    fn time_span(&self) -> (i64, i64);
    fn slice_index(&self, i0: usize, i1: usize) -> Result<EventStream, IoError>;
    fn slice_time(&self, t0: i64, t1: i64) -> Result<EventStream, IoError>;

    // Provided method
    fn pixel_counts(&self) -> Result<Vec<u64>, IoError> { ... }
}

Random-access view over a file’s events: fetch an arbitrary time or count range without materialising the whole stream. This backs the lazy open handle — the OpenCV VideoCapture to load’s imread. Each call returns a new EventStream.

Required Methods

fn sensor_size(&self) -> (usize, usize)

fn timestamp_scale_ms(&self) -> f64

fn n_events(&self) -> usize

Total events in the file.

fn time_span(&self) -> (i64, i64)

(t_min, t_max) in microseconds across the whole file; (0, 0) when empty.

fn slice_index(&self, i0: usize, i1: usize) -> Result<EventStream, IoError>

Events whose index lies in [i0, i1) (clamped to the file).

fn slice_time(&self, t0: i64, t1: i64) -> Result<EventStream, IoError>

Events whose timestamp (µs) lies in the half-open window [t0, t1).

Provided Methods

fn pixel_counts(&self) -> Result<Vec<u64>, IoError>

Per-pixel event counts over the whole file (row-major width·height), out-of-bounds events dropped — what the reader’s hot-pixel pre-scan needs. The default tallies through slice_index in bounded chunks; a source that can read coordinates alone (HDF5) overrides this to skip the t/p columns and stream construction, which is most of the work.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl SliceSource for BagSliceSource

impl SliceSource for MemorySliceSource