66 lines
1.6 KiB
TypeScript
66 lines
1.6 KiB
TypeScript
const graph_density = 1000;
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const threshold_at_point = 1;
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const inertia_s = 0.1;
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const inertia_samples = inertia_s * graph_density;
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let position = 0;
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let last_swap_position = 0;
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const s = (n: number) => Math.round(n / graph_density);
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const minutes = (units: number) => Math.floor(s(units) / 60);
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const formatTime = (units: number) =>
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`${minutes(units)}:${Math.floor(s(units) % 60)}`;
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let keep_loud_until = 0;
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let total_speaking = 0;
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const results: [string, number][] = [];
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process.stdin.on("readable", () => {
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let chunk: Buffer | null;
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let was_loud_last_time = false;
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while ((chunk = process.stdin.read()) !== null) {
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for (let i = 0; i < chunk.byteLength; i++) {
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position++;
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const byte = chunk[i];
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const volume = Math.abs(byte - 128);
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const is_loud: boolean =
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volume > threshold_at_point || position < keep_loud_until;
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if (is_loud) {
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total_speaking++;
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}
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if (is_loud != was_loud_last_time) {
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results.push([
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is_loud ? "silence" : "speaking",
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position - last_swap_position,
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]);
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last_swap_position = position;
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was_loud_last_time = is_loud;
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}
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if (volume > threshold_at_point) {
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keep_loud_until = position + inertia_samples;
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}
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}
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}
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});
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const mode_to_image = (mode: string) => {
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return mode === "silence" ? "pics/cisza.png" : "pics/kuba.png";
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};
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process.stdin.on("end", () => {
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results.forEach(([mode, duration_units]) => {
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console.log("file", `'${mode_to_image(mode)}'`);
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console.log("duration", (duration_units / graph_density).toFixed(4));
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});
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console.log("file", `'${mode_to_image(results[results.length - 1][0])}'`);
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// console.log(formatTime(total_speaking), formatTime(position));
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});
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