refactor: split constants by domain and isolate timeline panel from core

1 files changed, 25 insertions, 0 deletions

diff --git a/apps/web/src/lib/retime/rate.ts b/apps/web/src/lib/retime/rate.ts
new file mode 100644
index 00000000..75ea530b
--- /dev/null
+++ b/apps/web/src/lib/retime/rate.ts
@@ -0,0 +1,25 @@
+export const DEFAULT_RETIME_RATE = 1;
+export const MIN_RETIME_RATE = 0.01;
+export const MAX_RETIME_RATE = 5;
+
+export function clampRetimeRate({ rate }: { rate: number }): number {
+	if (!Number.isFinite(rate) || rate <= 0) {
+		return DEFAULT_RETIME_RATE;
+	}
+
+	return Math.min(Math.max(rate, MIN_RETIME_RATE), MAX_RETIME_RATE);
+}
+
+export function canMaintainPitch({ rate }: { rate: number }): boolean {
+	return Number.isFinite(rate) && rate > 0;
+}
+
+export function shouldMaintainPitch({
+	rate,
+	maintainPitch,
+}: {
+	rate: number;
+	maintainPitch?: boolean;
+}): boolean {
+	return maintainPitch === true && canMaintainPitch({ rate });
+}