Primitive media duration helpers.

These helpers keep durations explicit without requiring a broader time framework.

Examples

use use_media_duration::{MediaDuration, duration_from_samples, format_duration_hms};

let duration = MediaDuration::new(90.5).unwrap();

assert_eq!(duration.millis(), 90_500);
assert_eq!(format_duration_hms(3661.0).unwrap(), "01:01:01");
assert!((duration_from_samples(96_000, 48_000.0).unwrap() - 2.0).abs() < 1.0e-12);