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assets/scripts.js: Improve timer logic

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Use end of ongoing moments and start of upcoming moments too.
This commit is contained in:
Vladimir Panteleev 2019-07-28 06:01:13 +00:00
parent 57166f7daa
commit 39c3144e4c
1 changed files with 14 additions and 5 deletions
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19
assets/scripts.js
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@ -220,15 +220,10 @@ function ontimeupdate(evt) {
var ms = getCurrentMs(); var ms = getCurrentMs();
currentSegment = getSegmentId(ms); currentSegment = getSegmentId(ms);
// ontimeupdate resolution is about a second. Augment it using timer.
if (timerId) { if (timerId) {
clearTimeout(timerId); clearTimeout(timerId);
timerId = 0; timerId = 0;
} }
if (currentSegment && nextSegment && nextSegment != currentSegment) {
var timeLeft = segmentMap.segments[currentSegment].endTimeMs - ms;
timerId = setTimeout(ontimeupdate, timeLeft);
}
// Distinguish between the user seeking manually with <video> controls, // Distinguish between the user seeking manually with <video> controls,
// and the video playing normally (past some timestamp / boundary). // and the video playing normally (past some timestamp / boundary).
@ -308,6 +303,20 @@ function ontimeupdate(evt) {
location.hash = hash; location.hash = hash;
ls.place = hash; ls.place = hash;
} }
// ontimeupdate resolution is about a second. Augment it using timer.
let nextEvent = segmentMap.segments[currentSegment].endTimeMs;
for (let k in currentMoments) {
let m = currentMoments[k];
if (m.endMs < nextEvent)
nextEvent = m.endMs;
}
for (let m of momentsBySegment[currentSegment] || [])
if (ms < m.startMs && m.startMs < nextEvent)
nextEvent = m.startMs;
var timeLeft = nextEvent - ms;
if (timeLeft > 0)
timerId = setTimeout(ontimeupdate, timeLeft);
} }
function jumpForward() { function jumpForward() {