diff options
Diffstat (limited to 'apps/web/src/lib/retime')
| -rw-r--r-- | apps/web/src/lib/retime/__tests__/resolve.test.ts | 122 | ||||
| -rw-r--r-- | apps/web/src/lib/retime/__tests__/split.test.ts | 62 | ||||
| -rw-r--r-- | apps/web/src/lib/retime/audio-stretch.ts | 364 | ||||
| -rw-r--r-- | apps/web/src/lib/retime/index.ts | 8 | ||||
| -rw-r--r-- | apps/web/src/lib/retime/presets.ts | 24 | ||||
| -rw-r--r-- | apps/web/src/lib/retime/resolve.ts | 96 | ||||
| -rw-r--r-- | apps/web/src/lib/retime/split.ts | 68 |
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;
+}
|
