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Buffer bounded recording segments for stable browser playback

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Codex
2026-10-06 23:00:28 +08:00
parent 12556bf10f
commit f7d3fea92f
12 changed files with 187 additions and 26 deletions
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test_recording_tools.js
+11 -3
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@@ -13,9 +13,9 @@ test('microsecond recording starts round inward and never seek into the precedin
assert.equal(exact[0].start,Date.parse(raw));
assert.deepEqual(Ranges.normalize([{start:raw,duration:0.0001}],date(0),date(1)),[]);
});
test('long recording continues after each one-hour session',()=>{
const ranges=[{start:+date(0),end:+date(8000)}];assert.deepEqual(Ranges.at(ranges,date(0)),{start:+date(0),end:+date(3600)});
assert.deepEqual(Ranges.next(ranges,date(3600)),{start:+date(3600),end:+date(7200)});assert.equal(Ranges.next(ranges,date(8000)),null);
test('long recording continues in bounded five-minute sessions',()=>{
const ranges=[{start:+date(0),end:+date(8000)}];assert.deepEqual(Ranges.at(ranges,date(0)),{start:+date(0),end:+date(300)});
assert.deepEqual(Ranges.next(ranges,date(300)),{start:+date(300),end:+date(600)});assert.equal(Ranges.next(ranges,date(8000)),null);
});
test('next segment skips the actual gap and does not replay the previous end',()=>{
const ranges=[{start:+date(0),end:+date(10)},{start:+date(30),end:+date(40)}];assert.equal(Ranges.at(ranges,date(10)),null);
@@ -56,6 +56,14 @@ test('late recording list cannot replace another camera or a logged-out view',as
vm.runInContext(section('recording-ui.js','async function queryRecordings(','function drawTimeline('),c);
const work=c.queryRecordings();c.playbackGeneration++;p.resolve({items:[]});await work;assert.equal(c.spans,undefined);
});
test('resuming a long pause reopens the recorded position without a page refresh',()=>{
const c=ui({playbackRange:{start:10000,end:300000},playbackPausedAt:Date.now()-20000,playAt:(date,preserve)=>c.played={time:+date,preserve}});
c.$('#play-video').currentTime=45;
vm.runInContext(section('recording-ui.js','function pausePlayback(','function makeClip('),c);
c.resumePlayback();assert.deepEqual(c.played,{time:55000,preserve:true});assert.equal(c.playbackPausedAt,0);
c.played=null;c.playbackPausedAt=Date.now();c.resumePlayback();assert.equal(c.played,null);
c.playbackPausedAt=Date.now()-20000;c.loggedIn=false;c.resumePlayback();assert.equal(c.played,null);
});
test('download generation refuses gaps and invalidates old links first',()=>{
const c=ui({queryCamera:'camera',spans:[{start:+date(0),end:+date(60)}],playbackParams:()=>new URLSearchParams({start:'test'}),Error});
vm.runInContext(section('recording-ui.js','function makeClip(',"$('#query-recordings')"),c);