Module time 

UTC time and duration codecs for DVB wire fields.

DVB carries wall-clock time as a 16-bit Modified Julian Date plus 24-bit BCD HHMMSS (EN 300 468 Annex C), and event durations as 24-bit BCD HHMMSS. The duration codec is dependency-free; the MJD↔calendar conversion needs a date library and so lives behind the chrono feature.

Structs

MjdBcdDateTime

Decoded 5-byte DVB UTC time (16-bit MJD + 24-bit BCD HHMMSS).

Constants

SECS_2000_EPOCH

Unix timestamp (seconds since Unix epoch 1970-01-01T00:00:00 UTC) of the T2-MI / DVB time-of-day epoch: 2000-01-01T00:00:00 UTC.

Functions

decode_bcd_duration

Decode a 24-bit BCD HHMMSS duration ([HH, MM, SS]) to a Duration.

decode_mjd_bcd

Decode a 5-byte DVB UTC time (16-bit MJD + 24-bit BCD HHMMSS) to a plain MjdBcdDateTime.

decode_mjd_bcd_utcchrono

Decode a 5-byte DVB UTC time (16-bit MJD + 24-bit BCD HHMMSS) to a chrono::DateTime<chrono::Utc>.

decode_seconds_since_2000_utcchrono

Decode a T2-MI seconds_since_2000 / subsecond-nanoseconds pair to a chrono::DateTime<chrono::Utc>, applying a utco leap-second offset.

encode_bcd_duration

Encode a whole-second Duration to a 24-bit BCD HHMMSS ([HH, MM, SS]).

encode_mjd_bcd

Encode a MjdBcdDateTime to a 5-byte DVB UTC time.

encode_mjd_bcd_utcchrono

Encode a chrono::DateTime<chrono::Utc> to a 5-byte DVB UTC time (16-bit MJD + 24-bit BCD HHMMSS).

encode_seconds_since_2000_utcchrono

Encode a chrono::DateTime<chrono::Utc> to seconds_since_2000 with a utco leap-second offset.

mjd_to_ymdchrono

Convert a 16-bit Modified Julian Date to (year, month, day).

ymd_to_mjdchrono

Convert a (year, month, day) date to a 16-bit Modified Julian Date.