fn reach_back(
log: &mut VecDeque<(u64, f64, f64)>,
pts: u64,
held: Option<(f64, f64)>,
holds: bool,
) -> (Option<(f64, f64)>, bool)Expand description
The band a frame codes once the frames from timestamp pts on are left out of every
prediction, their bands taken out of log: the one it holds (held) reaching back over theirs;
and whether theirs are lost, a frame that holds no quantizer (holds) taking none of them back.
A frame held whole codes them anyway.