e035cadb4d
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Tests / Declarative: Post Actions failed: 42, skipped: 89, passed: 4273
31 lines
1.6 KiB
JavaScript
31 lines
1.6 KiB
JavaScript
// Metadata only. No frames or PCM are retained. These are OBSERVER metrics,
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// never an automatically passing sync/freshness/artifact report.
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export class VideoMetrics {
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constructor() { this.last = null; this.intervals = []; this.callbacks = 0; this.unobserved = 0; this.resets = 0; }
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observe(timeMs, presentedFrames) {
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if (!Number.isFinite(timeMs) || !Number.isSafeInteger(presentedFrames) || presentedFrames < 0) return;
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if (this.last) {
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if (timeMs <= this.last.timeMs || presentedFrames <= this.last.presentedFrames) this.resets++;
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else {
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if (this.intervals.length < 15000) this.intervals.push(timeMs-this.last.timeMs);
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this.unobserved += Math.max(0,presentedFrames-this.last.presentedFrames-1);
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}
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}
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this.last = {timeMs,presentedFrames}; this.callbacks++;
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}
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summary() {
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const sorted = [...this.intervals].sort((a,b)=>a-b);
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return {callbacks:this.callbacks,unobservedPresentedFrames:this.unobserved,clockOrCounterResets:this.resets,
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callbackIntervalP95Ms:sorted.length ? sorted[Math.ceil(sorted.length*.95)-1] : null,
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callbackGapMaxMs:sorted.at(-1) ?? null,
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note:"Browser presentation callbacks; gaps are not proof of transport loss or corrupted video."};
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}
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}
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export function receipt(video,audio,settings,elapsedMs,reason) {
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return {schema:"lesavka.rct-av-observer.v1",kind:"diagnostic-only",reason,elapsedMs,
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settings,video:video.summary(),audio,
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syncMeasured:false,freshnessMeasured:false,artifactsMeasured:false,
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releaseEligible:false,recordedMedia:false};
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}
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