From 8db3bead13441a5882d8689dfc6a9f09c82375d9 Mon Sep 17 00:00:00 2001
From: Maze Winther <mazewinther@gmail.com>
Date: Wed, 25 Mar 2026 16:47:22 +0100
Subject: feat: masks, properties refactor, shaders, storage migrations, and
 more

---
 apps/web/src/lib/retime/resolve.ts | 48 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 apps/web/src/lib/retime/resolve.ts

(limited to 'apps/web/src/lib/retime/resolve.ts')

diff --git a/apps/web/src/lib/retime/resolve.ts b/apps/web/src/lib/retime/resolve.ts
new file mode 100644
index 00000000..cfcfb6a2
--- /dev/null
+++ b/apps/web/src/lib/retime/resolve.ts
@@ -0,0 +1,48 @@
+import type { RetimeConfig } from "@/lib/timeline";
+import { clampRetimeRate } from "@/constants/retime-constants";
+
+function getSafeRate({ rate }: { rate: number }): number {
+	return clampRetimeRate({ rate });
+}
+
+export function getSourceTimeAtClipTime({
+	clipTime,
+	retime,
+}: {
+	clipTime: number;
+	retime?: RetimeConfig;
+}): number {
+	return clipTime * getSafeRate({ rate: retime?.rate ?? 1 });
+}
+
+export function getClipTimeAtSourceTime({
+	sourceTime,
+	retime,
+}: {
+	sourceTime: number;
+	retime?: RetimeConfig;
+}): number {
+	return sourceTime / getSafeRate({ rate: retime?.rate ?? 1 });
+}
+
+export function getEffectiveRateAt({
+	retime,
+}: {
+	clipTime?: number;
+	retime?: RetimeConfig;
+}): number {
+	return getSafeRate({ rate: retime?.rate ?? 1 });
+}
+
+export function getTimelineDurationForSourceSpan({
+	sourceSpan,
+	retime,
+}: {
+	sourceSpan: number;
+	retime?: RetimeConfig;
+}): number {
+	if (sourceSpan <= 0) {
+		return 0;
+	}
+	return sourceSpan / getSafeRate({ rate: retime?.rate ?? 1 });
+}
-- 
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