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Ensured offset means exactly one thing.

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This commit is contained in:
Thomas Harte 2017-07-21 20:58:17 -04:00
parent 807e1d36d5
commit 163c0f1b44
1 changed files with 3 additions and 3 deletions
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6
Storage/Disk/DigitalPhaseLockedLoop.cpp
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@ -47,8 +47,8 @@ void DigitalPhaseLockedLoop::add_pulse() {
}
}
void DigitalPhaseLockedLoop::post_phase_offset(int phase, int offset) {
offset_history_[offset_history_pointer_] = offset;
void DigitalPhaseLockedLoop::post_phase_offset(int new_phase, int new_offset) {
offset_history_[offset_history_pointer_] = new_offset;
offset_history_pointer_ = (offset_history_pointer_ + 1) % offset_history_.size();
// use an unweighted average of the stored offsets to compute current window size,
@ -65,7 +65,7 @@ void DigitalPhaseLockedLoop::post_phase_offset(int phase, int offset) {
window_length_ = total_spacing / total_divisor;
}
int error = phase - (window_length_ >> 1);
int error = new_phase - (window_length_ >> 1);
// use a simple spring mechanism as a lowpass filter for phase
phase_ -= (error + 1) >> 1;