Primitive media timestamp helpers.

These helpers keep timestamps explicit and frame conversion deterministic.

Examples

use use_media_timestamp::{MediaTimestamp, clamp_timestamp, timestamp_from_frame};

let timestamp = timestamp_from_frame(60, 30.0).unwrap();

assert_eq!(timestamp, MediaTimestamp::new(2.0).unwrap());
assert_eq!(timestamp.frame_index(30.0).unwrap(), 60);
assert_eq!(clamp_timestamp(12.0, 10.0).unwrap(), 10.0);