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zeekay
237a080a80
Studied fortemi/fortemi @ v2026.5.0 and produced PARITY.md — every
algorithm Fortémi ships has a row mapping to a Hanzo destination
(this repo, a sibling hanzo/* repo, or a tracked planned module).
Landed under packages/memory/, all backed by 21 passing tests in
algorithms.test.ts:
- fusion.ts RRF (k=20 BEIR), RSF, adaptive k, adaptive weights
- rerank.ts Maximal Marginal Relevance (Carbonell & Goldstein 1998)
- dedup.ts chunk-aware deduplication (best per chain)
- script.ts Unicode script detection — Latin/CJK/emoji/Cyrillic/
Arabic/Hebrew/Greek/Devanagari
- embed.ts embedding model registry, asymmetric E5 prefixes,
Matryoshka truncation, coarse-dim picker
- temporal.ts UUIDv7 floor/ceiling + named ranges
- captions.ts WebVTT / SRT / RTTM renderers
Exposed from @hanzo/bot-memory v1.4.3.
Remaining gaps tracked in PARITY.md: FTS feature flags, federated search,
runtime config hot-swap, capabilities/task selector, eval harness, SKOS,
FAIR export, SNN/PFNET/Louvain graph maintenance, LLM-typed graph links,
extraction registry — plus sibling-repo wire-ups (search/vector/crypto/
age/replicate/insights/agents).
73 lines
2.5 KiB
TypeScript
73 lines
2.5 KiB
TypeScript
/**
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* Caption / subtitle rendering from time-coded segments.
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*
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* Supports WebVTT (W3C), SRT (SubRip), and RTTM (NIST diarization).
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*/
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export interface CaptionSegment {
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startSecs: number;
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endSecs: number;
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text: string;
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/** Optional speaker label (used for diarization-aware output). */
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speaker?: string;
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}
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// ── WebVTT ─────────────────────────────────────────────────────────────
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export function renderVtt(segs: CaptionSegment[]): string {
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let out = "WEBVTT\n\n";
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segs.forEach((s, i) => {
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out += `${i + 1}\n`;
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out += `${vttTime(s.startSecs)} --> ${vttTime(s.endSecs)}\n`;
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if (s.speaker) out += `<v ${s.speaker}>${s.text}</v>\n\n`;
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else out += `${s.text}\n\n`;
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});
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return out;
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}
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function vttTime(secs: number): string {
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const ms = Math.floor((secs - Math.floor(secs)) * 1000);
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const total = Math.floor(secs);
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const h = Math.floor(total / 3600);
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const m = Math.floor((total % 3600) / 60);
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const s = total % 60;
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return `${pad2(h)}:${pad2(m)}:${pad2(s)}.${pad3(ms)}`;
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}
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// ── SRT ────────────────────────────────────────────────────────────────
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export function renderSrt(segs: CaptionSegment[]): string {
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let out = "";
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segs.forEach((s, i) => {
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out += `${i + 1}\n`;
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out += `${srtTime(s.startSecs)} --> ${srtTime(s.endSecs)}\n`;
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if (s.speaker) out += `${s.speaker}: ${s.text}\n\n`;
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else out += `${s.text}\n\n`;
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});
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return out;
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}
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function srtTime(secs: number): string {
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const ms = Math.floor((secs - Math.floor(secs)) * 1000);
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const total = Math.floor(secs);
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const h = Math.floor(total / 3600);
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const m = Math.floor((total % 3600) / 60);
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const s = total % 60;
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return `${pad2(h)}:${pad2(m)}:${pad2(s)},${pad3(ms)}`;
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}
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// ── RTTM (NIST Rich Transcription Time Marked) ─────────────────────────
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export function renderRttm(segs: CaptionSegment[], uri: string = "audio"): string {
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let out = "";
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for (const s of segs) {
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if (!s.speaker) continue;
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const duration = (s.endSecs - s.startSecs).toFixed(3);
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out += `SPEAKER ${uri} 1 ${s.startSecs.toFixed(3)} ${duration} <NA> <NA> ${s.speaker} <NA> <NA>\n`;
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}
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return out;
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}
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function pad2(n: number): string { return n.toString().padStart(2, "0"); }
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function pad3(n: number): string { return n.toString().padStart(3, "0"); }
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