18 lines
735 B
TypeScript
18 lines
735 B
TypeScript
import type { Role } from "../core/types.ts";
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import type { RefTrack } from "./smf.ts";
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// Best-effort role for a reference MIDI track; null = unmapped (excluded from scoring until the user maps it).
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export function guessRole(t: RefTrack): Role | null {
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if (t.isDrums) return "drums";
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const n = t.name.trim().toLowerCase();
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if (/vocal|voice|vox|sing/.test(n)) return "vocals";
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if (/bass/.test(n)) return "bass";
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if (/guitar|delay/.test(n)) return "guitar";
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if (/piano|key|synth|organ/.test(n)) return "keys";
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const p = t.program;
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if (p >= 32 && p <= 39) return "bass";
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if (p >= 24 && p <= 31) return "guitar";
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if ((p >= 0 && p <= 7) || (p >= 16 && p <= 23) || (p >= 88 && p <= 95)) return "keys";
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return null;
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}
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