From a6e89ee5ad3cf9557cf92bcdfbabbd77ae480bd2 Mon Sep 17 00:00:00 2001
From: Kuba Orlik <kontakt@kuba-orlik.name>
Date: Thu, 28 Dec 2023 13:07:15 +0100
Subject: [PATCH] Easier way to configure volume threshold (an exported
 variable in generate.sh)

---
 generate-demuxer.ts | 114 ++++++++++++++++++++------------------------
 generate.sh         |   7 +--
 2 files changed, 56 insertions(+), 65 deletions(-)

diff --git a/generate-demuxer.ts b/generate-demuxer.ts
index 7e153aa..f0ae038 100644
--- a/generate-demuxer.ts
+++ b/generate-demuxer.ts
@@ -2,7 +2,7 @@ import findLoudness, { SwapPoint } from "./find-loudness";
 
 const graph_density = 8000;
 
-const threshold_at_point = 1;
+const threshold_at_point = parseInt(process.env.demuxer_volume_threshold) || 1;
 
 const inertia_s = 0.3;
 const inertia_samples = inertia_s * graph_density;
@@ -14,75 +14,65 @@ const minutes = (units: number) => Math.floor(s(units) / 60);
 const hours = (units: number) => Math.floor(units / graph_density / 60 / 60);
 
 const formatTime = (units: number) =>
-	`${hours(units)}:${minutes(units)}:${Math.floor(s(units) % 60)}`;
+  `${hours(units)}:${minutes(units)}:${Math.floor(s(units) % 60)}`;
 
 type Mode = { left: boolean; right: boolean };
 
 async function run() {
-	const [left_breaks, right_breaks] = await Promise.all([
-		findLoudness(
-			"/tmp/leftraw",
-			threshold_at_point,
-			inertia_samples,
-			"left"
-		),
-		findLoudness(
-			"/tmp/rightraw",
-			threshold_at_point,
-			inertia_samples,
-			"right"
-		),
-	]);
+  const [left_breaks, right_breaks] = await Promise.all([
+    findLoudness("/tmp/leftraw", threshold_at_point, inertia_samples, "left"),
+    findLoudness("/tmp/rightraw", threshold_at_point, inertia_samples, "right"),
+  ]);
 
-	const merged = [...left_breaks, ...right_breaks].sort((a, b) =>
-		a.position_start < b.position_start
-			? -1
-			: a.position_start > b.position_start
-			? 1
-			: 0
-	);
+  const merged = [...left_breaks, ...right_breaks].sort((a, b) =>
+    a.position_start < b.position_start
+      ? -1
+      : a.position_start > b.position_start
+      ? 1
+      : 0
+  );
 
-	// console.log("left breaks:", left_breaks);
-	// console.log(`right_breaks`, right_breaks);
-	// console.log(`merged`, merged);
+  // console.log("left breaks:", left_breaks);
+  // console.log(`right_breaks`, right_breaks);
+  // console.log(`merged`, merged);
 
-	function new_mode(m: Mode, s: SwapPoint): Mode {
-		return { ...m, [s.label]: s.loud };
-	}
+  function new_mode(m: Mode, s: SwapPoint): Mode {
+    return { ...m, [s.label]: s.loud };
+  }
 
-	function mode_to_string(mode: Mode) {
-		if (mode.left && mode.right) {
-			return "both";
-		}
-		for (const side of ["left", "right"]) {
-			if (mode[side as keyof Mode]) {
-				return side;
-			}
-		}
-		return "none";
-	}
+  function mode_to_string(mode: Mode) {
+    if (mode.left && mode.right) {
+      return "both";
+    }
+    for (const side of ["left", "right"]) {
+      if (mode[side as keyof Mode]) {
+        return side;
+      }
+    }
+    return "none";
+  }
 
-	console.log("file", `${process.cwd()}/pics/none.png`);
-	let last_point = 0;
-	let mode: Mode = { left: false, right: false };
-	let last_file;
-	let total = 0;
-	for (let i = 2; i < merged.length; i++) {
-		const point = merged[i];
-		mode = new_mode(mode, point);
-		const file = `${process.cwd()}/pics/${mode_to_string(mode)}.png`;
-		const duration = (point.position_start - last_point) / graph_density;
-		console.log(
-			"duration",
-			(point.position_start - last_point) / graph_density
-		);
-		console.log("file", file);
-		last_point = point.position_start;
-		last_file = file;
-		total += duration * graph_density;
-	}
-	console.log("duration", merged[merged.length - 1].duration / graph_density);
-	console.log("file", last_file);
-	console.error(total, formatTime(total));
+  console.log("file", `${process.cwd()}/pics/none.png`);
+  let last_point = 0;
+  let mode: Mode = { left: false, right: false };
+  let last_file;
+  let total = 0;
+  for (let i = 2; i < merged.length; i++) {
+    const point = merged[i];
+    mode = new_mode(mode, point);
+    const file = `${process.cwd()}/pics/${mode_to_string(mode)}.png`;
+    const duration = (point.position_start - last_point) / graph_density;
+    console.log(
+      "duration",
+      (point.position_start - last_point) / graph_density
+    );
+    console.log("file", file);
+    last_point = point.position_start;
+    last_file = file;
+    total += duration * graph_density;
+  }
+  console.log("duration", merged[merged.length - 1].duration / graph_density);
+  console.log("file", last_file);
+  console.error(total, formatTime(total));
 }
 run();
diff --git a/generate.sh b/generate.sh
index 2e21354..1fab8ac 100755
--- a/generate.sh
+++ b/generate.sh
@@ -6,13 +6,14 @@
 #  W katalogu z tym skryptem musisz mieć katalog "pics", w którym są pliki "left.png", "right.png", "none.png" i "both.png"
 #
 
-export input=~/Downloads/icdw3/stereo-processed.wav              # tutaj dajemy ścieżkę do pliku mp3 z Arkiem w jednym kanale i Kubą w drugim
-export input_mono=~/Downloads/icdw3/mono-processed.wav           # tutaj dajemy ścieżkę do pliku mp3 z Arkiem w jednym kanale i Kubą w drugim
+export input=~/Downloads/icdw5/icdw5-stereo.wav                  # tutaj dajemy ścieżkę do pliku mp3 z Arkiem w jednym kanale i Kubą w drugim
+export input_mono=~/Downloads/icdw5/icdw5-stereo.wav             # tutaj dajemy ścieżkę do pliku mp3 z Arkiem w jednym kanale i Kubą w drugim
 export intro=~/projects/midline/podcast-visualizer/out/intro.mp4 # glitch
 export outro=~/projects/midline/podcast-visualizer/out/intro.mp4 # to samo na końcu, co na początku
-export final_output=~/Downloads/icdw3-viz.mp4
+export final_output=~/Downloads/icdw5-viz.mp4
 export framerate=25
 export timescale=25000
+export demuxer_volume_threshold=30 #od 0 do 128
 
 aresample=8000 # to bez zmian
 mkdir -p out