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authorMaze Winther <mazewinther@gmail.com>2026-03-27 00:55:15 +0100
committerMaze Winther <mazewinther@gmail.com>2026-03-29 15:56:48 +0200
commit4d127a038bf768eded68aae3cfa5c1b12241bdac (patch)
tree16bbb801caf6770546cff4fdb37b6408ec9ead98 /apps/web/src/lib/retime
parent82817cb50cb0487350573d6129130aec705f924b (diff)
downloadopencut-4d127a038bf768eded68aae3cfa5c1b12241bdac.tar.gz
chore: normalize line endings
Diffstat (limited to 'apps/web/src/lib/retime')
-rw-r--r--apps/web/src/lib/retime/__tests__/resolve.test.ts122
-rw-r--r--apps/web/src/lib/retime/__tests__/split.test.ts62
-rw-r--r--apps/web/src/lib/retime/audio-stretch.ts364
-rw-r--r--apps/web/src/lib/retime/index.ts8
-rw-r--r--apps/web/src/lib/retime/presets.ts24
-rw-r--r--apps/web/src/lib/retime/resolve.ts96
-rw-r--r--apps/web/src/lib/retime/split.ts68
7 files changed, 372 insertions, 372 deletions
diff --git a/apps/web/src/lib/retime/__tests__/resolve.test.ts b/apps/web/src/lib/retime/__tests__/resolve.test.ts
index 4fcf6249..2fbd6675 100644
--- a/apps/web/src/lib/retime/__tests__/resolve.test.ts
+++ b/apps/web/src/lib/retime/__tests__/resolve.test.ts
@@ -1,61 +1,61 @@
-import { describe, expect, test } from "bun:test";
-import {
- getClipTimeAtSourceTime,
- getEffectiveRateAt,
- getSourceTimeAtClipTime,
- getTimelineDurationForSourceSpan,
-} from "@/lib/retime";
-import type { RetimeConfig } from "@/lib/timeline";
-
-const twoX: RetimeConfig = { rate: 2 };
-const halfX: RetimeConfig = { rate: 0.5 };
-
-describe("retime resolve", () => {
- test("maps clip time to source time at 2x speed", () => {
- expect(getSourceTimeAtClipTime({ clipTime: 5, retime: twoX })).toBe(10);
- });
-
- test("maps clip time to source time at 0.5x speed", () => {
- expect(getSourceTimeAtClipTime({ clipTime: 4, retime: halfX })).toBe(2);
- });
-
- test("returns clip time unchanged when no retime", () => {
- expect(getSourceTimeAtClipTime({ clipTime: 7 })).toBe(7);
- });
-
- test("inverts source time back to clip time at 2x speed", () => {
- expect(getClipTimeAtSourceTime({ sourceTime: 10, retime: twoX })).toBe(5);
- });
-
- test("returns effective rate", () => {
- expect(getEffectiveRateAt({ retime: twoX })).toBe(2);
- expect(getEffectiveRateAt({})).toBe(1);
- });
-
- test("derives timeline duration for a visible source span", () => {
- expect(
- getTimelineDurationForSourceSpan({ sourceSpan: 10, retime: twoX }),
- ).toBe(5);
- expect(
- getTimelineDurationForSourceSpan({ sourceSpan: 10, retime: halfX }),
- ).toBe(20);
- });
-
- test("clamps invalid rates to 1", () => {
- expect(getSourceTimeAtClipTime({ clipTime: 5, retime: { rate: 0 } })).toBe(
- 5,
- );
- expect(
- getSourceTimeAtClipTime({ clipTime: 5, retime: { rate: -1 } }),
- ).toBe(5);
- });
-
- test("caps retime rates above 5x", () => {
- expect(getSourceTimeAtClipTime({ clipTime: 5, retime: { rate: 100 } })).toBe(
- 25,
- );
- expect(
- getTimelineDurationForSourceSpan({ sourceSpan: 10, retime: { rate: 100 } }),
- ).toBe(2);
- });
-});
+import { describe, expect, test } from "bun:test";
+import {
+ getClipTimeAtSourceTime,
+ getEffectiveRateAt,
+ getSourceTimeAtClipTime,
+ getTimelineDurationForSourceSpan,
+} from "@/lib/retime";
+import type { RetimeConfig } from "@/lib/timeline";
+
+const twoX: RetimeConfig = { rate: 2 };
+const halfX: RetimeConfig = { rate: 0.5 };
+
+describe("retime resolve", () => {
+ test("maps clip time to source time at 2x speed", () => {
+ expect(getSourceTimeAtClipTime({ clipTime: 5, retime: twoX })).toBe(10);
+ });
+
+ test("maps clip time to source time at 0.5x speed", () => {
+ expect(getSourceTimeAtClipTime({ clipTime: 4, retime: halfX })).toBe(2);
+ });
+
+ test("returns clip time unchanged when no retime", () => {
+ expect(getSourceTimeAtClipTime({ clipTime: 7 })).toBe(7);
+ });
+
+ test("inverts source time back to clip time at 2x speed", () => {
+ expect(getClipTimeAtSourceTime({ sourceTime: 10, retime: twoX })).toBe(5);
+ });
+
+ test("returns effective rate", () => {
+ expect(getEffectiveRateAt({ retime: twoX })).toBe(2);
+ expect(getEffectiveRateAt({})).toBe(1);
+ });
+
+ test("derives timeline duration for a visible source span", () => {
+ expect(
+ getTimelineDurationForSourceSpan({ sourceSpan: 10, retime: twoX }),
+ ).toBe(5);
+ expect(
+ getTimelineDurationForSourceSpan({ sourceSpan: 10, retime: halfX }),
+ ).toBe(20);
+ });
+
+ test("clamps invalid rates to 1", () => {
+ expect(getSourceTimeAtClipTime({ clipTime: 5, retime: { rate: 0 } })).toBe(
+ 5,
+ );
+ expect(
+ getSourceTimeAtClipTime({ clipTime: 5, retime: { rate: -1 } }),
+ ).toBe(5);
+ });
+
+ test("caps retime rates above 5x", () => {
+ expect(getSourceTimeAtClipTime({ clipTime: 5, retime: { rate: 100 } })).toBe(
+ 25,
+ );
+ expect(
+ getTimelineDurationForSourceSpan({ sourceSpan: 10, retime: { rate: 100 } }),
+ ).toBe(2);
+ });
+});
diff --git a/apps/web/src/lib/retime/__tests__/split.test.ts b/apps/web/src/lib/retime/__tests__/split.test.ts
index 0ce532a1..a00eadac 100644
--- a/apps/web/src/lib/retime/__tests__/split.test.ts
+++ b/apps/web/src/lib/retime/__tests__/split.test.ts
@@ -1,31 +1,31 @@
-import { describe, expect, test } from "bun:test";
-import {
- getSourceSpanAtClipTime,
- splitRetimeAtClipTime,
-} from "@/lib/retime";
-import type { RetimeConfig } from "@/lib/timeline";
-
-describe("retime split", () => {
- test("measures source span at a clip time", () => {
- const retime: RetimeConfig = { rate: 2 };
- expect(getSourceSpanAtClipTime({ clipTime: 5, retime })).toBe(10);
- });
-
- test("returns zero for non-positive clip time", () => {
- expect(getSourceSpanAtClipTime({ clipTime: 0 })).toBe(0);
- expect(getSourceSpanAtClipTime({ clipTime: -1 })).toBe(0);
- });
-
- test("passes the same retime to both halves when splitting", () => {
- const retime: RetimeConfig = { rate: 1.5 };
- const result = splitRetimeAtClipTime({ retime, splitClipTime: 3 });
- expect(result.left).toBe(retime);
- expect(result.right).toBe(retime);
- });
-
- test("returns undefined on both sides when no retime", () => {
- const result = splitRetimeAtClipTime({ splitClipTime: 3 });
- expect(result.left).toBeUndefined();
- expect(result.right).toBeUndefined();
- });
-});
+import { describe, expect, test } from "bun:test";
+import {
+ getSourceSpanAtClipTime,
+ splitRetimeAtClipTime,
+} from "@/lib/retime";
+import type { RetimeConfig } from "@/lib/timeline";
+
+describe("retime split", () => {
+ test("measures source span at a clip time", () => {
+ const retime: RetimeConfig = { rate: 2 };
+ expect(getSourceSpanAtClipTime({ clipTime: 5, retime })).toBe(10);
+ });
+
+ test("returns zero for non-positive clip time", () => {
+ expect(getSourceSpanAtClipTime({ clipTime: 0 })).toBe(0);
+ expect(getSourceSpanAtClipTime({ clipTime: -1 })).toBe(0);
+ });
+
+ test("passes the same retime to both halves when splitting", () => {
+ const retime: RetimeConfig = { rate: 1.5 };
+ const result = splitRetimeAtClipTime({ retime, splitClipTime: 3 });
+ expect(result.left).toBe(retime);
+ expect(result.right).toBe(retime);
+ });
+
+ test("returns undefined on both sides when no retime", () => {
+ const result = splitRetimeAtClipTime({ splitClipTime: 3 });
+ expect(result.left).toBeUndefined();
+ expect(result.right).toBeUndefined();
+ });
+});
diff --git a/apps/web/src/lib/retime/audio-stretch.ts b/apps/web/src/lib/retime/audio-stretch.ts
index 51ef38d0..f8dd297c 100644
--- a/apps/web/src/lib/retime/audio-stretch.ts
+++ b/apps/web/src/lib/retime/audio-stretch.ts
@@ -1,182 +1,182 @@
-import { PitchShifter } from "soundtouchjs";
-import { clampRetimeRate, shouldMaintainPitch } from "@/constants/retime-constants";
-import type { RetimeConfig } from "@/lib/timeline";
-import { getSourceTimeAtClipTime } from "./resolve";
-
-const RATE_EPSILON = 1e-6;
-
-function sampleLinear({
- channelData,
- position,
-}: {
- channelData: Float32Array;
- position: number;
-}): number {
- if (position <= 0) {
- return channelData[0] ?? 0;
- }
- const lower = Math.floor(position);
- const upper = Math.min(channelData.length - 1, lower + 1);
- if (lower >= channelData.length) {
- return 0;
- }
- const fraction = position - lower;
- return channelData[lower] * (1 - fraction) + channelData[upper] * fraction;
-}
-
-function buildResampledBuffer({
- audioContext,
- sourceBuffer,
- trimStart,
- clipDuration,
- targetSampleRate,
- retime,
-}: {
- audioContext: BaseAudioContext;
- sourceBuffer: AudioBuffer;
- trimStart: number;
- clipDuration: number;
- targetSampleRate: number;
- retime?: RetimeConfig;
-}): AudioBuffer {
- const outputLength = Math.max(1, Math.ceil(clipDuration * targetSampleRate));
- const numChannels = Math.max(1, Math.min(2, sourceBuffer.numberOfChannels));
- const outputBuffer = audioContext.createBuffer(
- numChannels,
- outputLength,
- targetSampleRate,
- );
-
- for (let channel = 0; channel < numChannels; channel++) {
- const sourceData = sourceBuffer.getChannelData(
- Math.min(channel, sourceBuffer.numberOfChannels - 1),
- );
- const outputData = outputBuffer.getChannelData(channel);
-
- for (let i = 0; i < outputLength; i++) {
- const clipTime = i / targetSampleRate;
- const sourceTime =
- trimStart + getSourceTimeAtClipTime({ clipTime, retime });
- outputData[i] = sampleLinear({
- channelData: sourceData,
- position: sourceTime * sourceBuffer.sampleRate,
- });
- }
- }
-
- return outputBuffer;
-}
-
-async function buildPitchPreservedBuffer({
- sourceBuffer,
- trimStart,
- clipDuration,
- rate,
- targetSampleRate,
-}: {
- sourceBuffer: AudioBuffer;
- trimStart: number;
- clipDuration: number;
- rate: number;
- targetSampleRate: number;
-}): Promise<AudioBuffer> {
- const nativeSampleRate = sourceBuffer.sampleRate;
- const sourceDuration = clipDuration * rate;
- const startSample = Math.max(0, Math.floor(trimStart * nativeSampleRate));
- const numSourceSamples = Math.max(
- 1,
- Math.ceil(sourceDuration * nativeSampleRate),
- );
- const available = Math.max(0, sourceBuffer.length - startSample);
- const actualSamples = Math.max(1, Math.min(numSourceSamples, available));
- const numChannels = Math.max(1, Math.min(2, sourceBuffer.numberOfChannels));
-
- // Resample to targetSampleRate first — soundtouchjs reads raw channel data
- // and does not respect the source buffer's native sample rate.
- const resampledLength = Math.max(
- 1,
- Math.ceil(sourceDuration * targetSampleRate),
- );
- const resampleCtx = new OfflineAudioContext(
- numChannels,
- resampledLength,
- targetSampleRate,
- );
- const nativeBuffer = resampleCtx.createBuffer(
- numChannels,
- actualSamples,
- nativeSampleRate,
- );
-
- for (let ch = 0; ch < numChannels; ch++) {
- const src = sourceBuffer.getChannelData(
- Math.min(ch, sourceBuffer.numberOfChannels - 1),
- );
- nativeBuffer.copyToChannel(
- src.subarray(startSample, startSample + actualSamples),
- ch,
- );
- }
-
- const resampleSourceNode = resampleCtx.createBufferSource();
- resampleSourceNode.buffer = nativeBuffer;
- resampleSourceNode.connect(resampleCtx.destination);
- resampleSourceNode.start(0);
- const resampledBuffer = await resampleCtx.startRendering();
-
- const outputSamples = Math.max(
- 1,
- Math.ceil(clipDuration * targetSampleRate),
- );
- const stretchCtx = new OfflineAudioContext(
- numChannels,
- outputSamples,
- targetSampleRate,
- );
- const shifter = new PitchShifter(stretchCtx, resampledBuffer, 4096);
- shifter.tempo = rate;
- shifter.pitch = 1;
- shifter.connect(stretchCtx.destination);
- return stretchCtx.startRendering();
-}
-
-export async function renderRetimedBuffer({
- audioContext,
- sourceBuffer,
- trimStart,
- clipDuration,
- retime,
- maintainPitch = false,
-}: {
- audioContext: BaseAudioContext;
- sourceBuffer: AudioBuffer;
- trimStart: number;
- clipDuration: number;
- retime?: RetimeConfig;
- maintainPitch?: boolean;
-}): Promise<AudioBuffer> {
- const targetSampleRate = audioContext.sampleRate;
- const rate = clampRetimeRate({ rate: retime?.rate ?? 1 });
- const usePitchPreservation =
- shouldMaintainPitch({ rate, maintainPitch }) &&
- Math.abs(rate - 1) > RATE_EPSILON;
-
- if (usePitchPreservation) {
- return buildPitchPreservedBuffer({
- sourceBuffer,
- trimStart,
- clipDuration,
- rate,
- targetSampleRate,
- });
- }
-
- return buildResampledBuffer({
- audioContext,
- sourceBuffer,
- trimStart,
- clipDuration,
- targetSampleRate,
- retime,
- });
-}
+import { PitchShifter } from "soundtouchjs";
+import { clampRetimeRate, shouldMaintainPitch } from "@/constants/retime-constants";
+import type { RetimeConfig } from "@/lib/timeline";
+import { getSourceTimeAtClipTime } from "./resolve";
+
+const RATE_EPSILON = 1e-6;
+
+function sampleLinear({
+ channelData,
+ position,
+}: {
+ channelData: Float32Array;
+ position: number;
+}): number {
+ if (position <= 0) {
+ return channelData[0] ?? 0;
+ }
+ const lower = Math.floor(position);
+ const upper = Math.min(channelData.length - 1, lower + 1);
+ if (lower >= channelData.length) {
+ return 0;
+ }
+ const fraction = position - lower;
+ return channelData[lower] * (1 - fraction) + channelData[upper] * fraction;
+}
+
+function buildResampledBuffer({
+ audioContext,
+ sourceBuffer,
+ trimStart,
+ clipDuration,
+ targetSampleRate,
+ retime,
+}: {
+ audioContext: BaseAudioContext;
+ sourceBuffer: AudioBuffer;
+ trimStart: number;
+ clipDuration: number;
+ targetSampleRate: number;
+ retime?: RetimeConfig;
+}): AudioBuffer {
+ const outputLength = Math.max(1, Math.ceil(clipDuration * targetSampleRate));
+ const numChannels = Math.max(1, Math.min(2, sourceBuffer.numberOfChannels));
+ const outputBuffer = audioContext.createBuffer(
+ numChannels,
+ outputLength,
+ targetSampleRate,
+ );
+
+ for (let channel = 0; channel < numChannels; channel++) {
+ const sourceData = sourceBuffer.getChannelData(
+ Math.min(channel, sourceBuffer.numberOfChannels - 1),
+ );
+ const outputData = outputBuffer.getChannelData(channel);
+
+ for (let i = 0; i < outputLength; i++) {
+ const clipTime = i / targetSampleRate;
+ const sourceTime =
+ trimStart + getSourceTimeAtClipTime({ clipTime, retime });
+ outputData[i] = sampleLinear({
+ channelData: sourceData,
+ position: sourceTime * sourceBuffer.sampleRate,
+ });
+ }
+ }
+
+ return outputBuffer;
+}
+
+async function buildPitchPreservedBuffer({
+ sourceBuffer,
+ trimStart,
+ clipDuration,
+ rate,
+ targetSampleRate,
+}: {
+ sourceBuffer: AudioBuffer;
+ trimStart: number;
+ clipDuration: number;
+ rate: number;
+ targetSampleRate: number;
+}): Promise<AudioBuffer> {
+ const nativeSampleRate = sourceBuffer.sampleRate;
+ const sourceDuration = clipDuration * rate;
+ const startSample = Math.max(0, Math.floor(trimStart * nativeSampleRate));
+ const numSourceSamples = Math.max(
+ 1,
+ Math.ceil(sourceDuration * nativeSampleRate),
+ );
+ const available = Math.max(0, sourceBuffer.length - startSample);
+ const actualSamples = Math.max(1, Math.min(numSourceSamples, available));
+ const numChannels = Math.max(1, Math.min(2, sourceBuffer.numberOfChannels));
+
+ // Resample to targetSampleRate first — soundtouchjs reads raw channel data
+ // and does not respect the source buffer's native sample rate.
+ const resampledLength = Math.max(
+ 1,
+ Math.ceil(sourceDuration * targetSampleRate),
+ );
+ const resampleCtx = new OfflineAudioContext(
+ numChannels,
+ resampledLength,
+ targetSampleRate,
+ );
+ const nativeBuffer = resampleCtx.createBuffer(
+ numChannels,
+ actualSamples,
+ nativeSampleRate,
+ );
+
+ for (let ch = 0; ch < numChannels; ch++) {
+ const src = sourceBuffer.getChannelData(
+ Math.min(ch, sourceBuffer.numberOfChannels - 1),
+ );
+ nativeBuffer.copyToChannel(
+ src.subarray(startSample, startSample + actualSamples),
+ ch,
+ );
+ }
+
+ const resampleSourceNode = resampleCtx.createBufferSource();
+ resampleSourceNode.buffer = nativeBuffer;
+ resampleSourceNode.connect(resampleCtx.destination);
+ resampleSourceNode.start(0);
+ const resampledBuffer = await resampleCtx.startRendering();
+
+ const outputSamples = Math.max(
+ 1,
+ Math.ceil(clipDuration * targetSampleRate),
+ );
+ const stretchCtx = new OfflineAudioContext(
+ numChannels,
+ outputSamples,
+ targetSampleRate,
+ );
+ const shifter = new PitchShifter(stretchCtx, resampledBuffer, 4096);
+ shifter.tempo = rate;
+ shifter.pitch = 1;
+ shifter.connect(stretchCtx.destination);
+ return stretchCtx.startRendering();
+}
+
+export async function renderRetimedBuffer({
+ audioContext,
+ sourceBuffer,
+ trimStart,
+ clipDuration,
+ retime,
+ maintainPitch = false,
+}: {
+ audioContext: BaseAudioContext;
+ sourceBuffer: AudioBuffer;
+ trimStart: number;
+ clipDuration: number;
+ retime?: RetimeConfig;
+ maintainPitch?: boolean;
+}): Promise<AudioBuffer> {
+ const targetSampleRate = audioContext.sampleRate;
+ const rate = clampRetimeRate({ rate: retime?.rate ?? 1 });
+ const usePitchPreservation =
+ shouldMaintainPitch({ rate, maintainPitch }) &&
+ Math.abs(rate - 1) > RATE_EPSILON;
+
+ if (usePitchPreservation) {
+ return buildPitchPreservedBuffer({
+ sourceBuffer,
+ trimStart,
+ clipDuration,
+ rate,
+ targetSampleRate,
+ });
+ }
+
+ return buildResampledBuffer({
+ audioContext,
+ sourceBuffer,
+ trimStart,
+ clipDuration,
+ targetSampleRate,
+ retime,
+ });
+}
diff --git a/apps/web/src/lib/retime/index.ts b/apps/web/src/lib/retime/index.ts
index 4915c203..ca6725dd 100644
--- a/apps/web/src/lib/retime/index.ts
+++ b/apps/web/src/lib/retime/index.ts
@@ -1,4 +1,4 @@
-export * from "./audio-stretch";
-export * from "./presets";
-export * from "./resolve";
-export * from "./split";
+export * from "./audio-stretch";
+export * from "./presets";
+export * from "./resolve";
+export * from "./split";
diff --git a/apps/web/src/lib/retime/presets.ts b/apps/web/src/lib/retime/presets.ts
index 382320b0..777c0219 100644
--- a/apps/web/src/lib/retime/presets.ts
+++ b/apps/web/src/lib/retime/presets.ts
@@ -1,12 +1,12 @@
-import type { RetimeConfig } from "@/lib/timeline";
-import { clampRetimeRate } from "@/constants/retime-constants";
-
-export function buildConstantRetime({
- rate,
- maintainPitch = false,
-}: {
- rate: number;
- maintainPitch?: boolean;
-}): RetimeConfig {
- return { rate: clampRetimeRate({ rate }), maintainPitch };
-}
+import type { RetimeConfig } from "@/lib/timeline";
+import { clampRetimeRate } from "@/constants/retime-constants";
+
+export function buildConstantRetime({
+ rate,
+ maintainPitch = false,
+}: {
+ rate: number;
+ maintainPitch?: boolean;
+}): RetimeConfig {
+ return { rate: clampRetimeRate({ rate }), maintainPitch };
+}
diff --git a/apps/web/src/lib/retime/resolve.ts b/apps/web/src/lib/retime/resolve.ts
index cfcfb6a2..31a562be 100644
--- a/apps/web/src/lib/retime/resolve.ts
+++ b/apps/web/src/lib/retime/resolve.ts
@@ -1,48 +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 });
-}
+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 });
+}
diff --git a/apps/web/src/lib/retime/split.ts b/apps/web/src/lib/retime/split.ts
index 12982292..2635590e 100644
--- a/apps/web/src/lib/retime/split.ts
+++ b/apps/web/src/lib/retime/split.ts
@@ -1,34 +1,34 @@
-import type { RetimeConfig } from "@/lib/timeline";
-import { getSourceTimeAtClipTime } from "./resolve";
-
-export function getSourceSpanAtClipTime({
- clipTime,
- retime,
-}: {
- clipTime: number;
- retime?: RetimeConfig;
-}): number {
- return Math.max(0, getSourceTimeAtClipTime({ clipTime, retime }));
-}
-
-export function splitRetimeAtClipTime({
- retime,
-}: {
- retime?: RetimeConfig;
- splitClipTime: number;
-}): {
- left: RetimeConfig | undefined;
- right: RetimeConfig | undefined;
-} {
- return { left: retime, right: retime };
-}
-
-export function adjustRetimeForTrimChange({
- retime,
-}: {
- retime?: RetimeConfig;
- clipTrimTime: number;
- side: "start" | "end";
-}): RetimeConfig | undefined {
- return retime;
-}
+import type { RetimeConfig } from "@/lib/timeline";
+import { getSourceTimeAtClipTime } from "./resolve";
+
+export function getSourceSpanAtClipTime({
+ clipTime,
+ retime,
+}: {
+ clipTime: number;
+ retime?: RetimeConfig;
+}): number {
+ return Math.max(0, getSourceTimeAtClipTime({ clipTime, retime }));
+}
+
+export function splitRetimeAtClipTime({
+ retime,
+}: {
+ retime?: RetimeConfig;
+ splitClipTime: number;
+}): {
+ left: RetimeConfig | undefined;
+ right: RetimeConfig | undefined;
+} {
+ return { left: retime, right: retime };
+}
+
+export function adjustRetimeForTrimChange({
+ retime,
+}: {
+ retime?: RetimeConfig;
+ clipTrimTime: number;
+ side: "start" | "end";
+}): RetimeConfig | undefined {
+ return retime;
+}