1 files changed, 30 insertions, 0 deletions
diff --git a/apps/web/src/constants/retime-constants.ts b/apps/web/src/constants/retime-constants.ts
new file mode 100644
index 00000000..7b18b61c
--- /dev/null
+++ b/apps/web/src/constants/retime-constants.ts
@@ -0,0 +1,30 @@
+export const DEFAULT_RETIME_RATE = 1;
+export const MIN_RETIME_RATE = 0.01;
+export const MAX_RETIME_RATE = 5;
+export const MAX_PITCH_PRESERVE_RATE = 10;
+
+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 {
+	if (!Number.isFinite(rate) || rate <= 0) {
+		return false;
+	}
+
+	return clampRetimeRate({ rate }) <= MAX_PITCH_PRESERVE_RATE;
+}
+
+export function shouldMaintainPitch({
+	rate,
+	maintainPitch,
+}: {
+	rate: number;
+	maintainPitch?: boolean;
+}): boolean {
+	return maintainPitch === true && canMaintainPitch({ rate });
+}