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| author | Maze Winther <mazewinther@gmail.com> | 2026-03-27 00:55:15 +0100 |
|---|---|---|
| committer | Maze Winther <mazewinther@gmail.com> | 2026-03-29 15:56:48 +0200 |
| commit | 4d127a038bf768eded68aae3cfa5c1b12241bdac (patch) | |
| tree | 16bbb801caf6770546cff4fdb37b6408ec9ead98 /apps/web/src/lib/timeline/audio-state.ts | |
| parent | 82817cb50cb0487350573d6129130aec705f924b (diff) | |
| download | opencut-4d127a038bf768eded68aae3cfa5c1b12241bdac.tar.gz | |
chore: normalize line endings
Diffstat (limited to 'apps/web/src/lib/timeline/audio-state.ts')
| -rw-r--r-- | apps/web/src/lib/timeline/audio-state.ts | 200 |
1 files changed, 100 insertions, 100 deletions
diff --git a/apps/web/src/lib/timeline/audio-state.ts b/apps/web/src/lib/timeline/audio-state.ts index 4bc3a7e1..28e381c2 100644 --- a/apps/web/src/lib/timeline/audio-state.ts +++ b/apps/web/src/lib/timeline/audio-state.ts @@ -1,100 +1,100 @@ -import { hasKeyframesForPath } from "@/lib/animation/keyframe-query"; -import { resolveNumberAtTime } from "@/lib/animation/resolve"; -import { VOLUME_DB_MAX, VOLUME_DB_MIN } from "./audio-constants"; -import type { TimelineElement } from "./types"; -const DEFAULT_STEP_SECONDS = 1 / 60; - -export type AudioCapableElement = Extract< - TimelineElement, - { type: "audio" | "video" } ->; - -export function clampDb(value: number): number { - if (!Number.isFinite(value)) { - return 0; - } - - return Math.min(VOLUME_DB_MAX, Math.max(VOLUME_DB_MIN, value)); -} - -export function dBToLinear(db: number): number { - return 10 ** (clampDb(db) / 20); -} - -export function hasAnimatedVolume({ - element, -}: { - element: AudioCapableElement; -}): boolean { - return hasKeyframesForPath({ - animations: element.animations, - propertyPath: "volume", - }); -} - -export function resolveEffectiveAudioGain({ - element, - trackMuted = false, - localTime, -}: { - element: AudioCapableElement; - trackMuted?: boolean; - localTime: number; -}): number { - if (trackMuted || element.muted === true) { - return 0; - } - - const resolvedDb = resolveNumberAtTime({ - baseValue: element.volume ?? 0, - animations: element.animations, - propertyPath: "volume", - localTime, - }); - - return dBToLinear(resolvedDb); -} - -export function buildAudioGainAutomation({ - element, - trackMuted = false, - fromLocalTime, - toLocalTime, - stepSeconds = DEFAULT_STEP_SECONDS, -}: { - element: AudioCapableElement; - trackMuted?: boolean; - fromLocalTime: number; - toLocalTime: number; - stepSeconds?: number; -}): Array<{ localTime: number; gain: number }> { - const startTime = Math.max(0, fromLocalTime); - const endTime = Math.max(startTime, toLocalTime); - const safeStep = - Number.isFinite(stepSeconds) && stepSeconds > 0 - ? stepSeconds - : DEFAULT_STEP_SECONDS; - const points: Array<{ localTime: number; gain: number }> = []; - - for (let localTime = startTime; localTime < endTime; localTime += safeStep) { - points.push({ - localTime, - gain: resolveEffectiveAudioGain({ - element, - trackMuted, - localTime, - }), - }); - } - - points.push({ - localTime: endTime, - gain: resolveEffectiveAudioGain({ - element, - trackMuted, - localTime: endTime, - }), - }); - - return points; -} +import { hasKeyframesForPath } from "@/lib/animation/keyframe-query";
+import { resolveNumberAtTime } from "@/lib/animation/resolve";
+import { VOLUME_DB_MAX, VOLUME_DB_MIN } from "./audio-constants";
+import type { TimelineElement } from "./types";
+const DEFAULT_STEP_SECONDS = 1 / 60;
+
+export type AudioCapableElement = Extract<
+ TimelineElement,
+ { type: "audio" | "video" }
+>;
+
+export function clampDb(value: number): number {
+ if (!Number.isFinite(value)) {
+ return 0;
+ }
+
+ return Math.min(VOLUME_DB_MAX, Math.max(VOLUME_DB_MIN, value));
+}
+
+export function dBToLinear(db: number): number {
+ return 10 ** (clampDb(db) / 20);
+}
+
+export function hasAnimatedVolume({
+ element,
+}: {
+ element: AudioCapableElement;
+}): boolean {
+ return hasKeyframesForPath({
+ animations: element.animations,
+ propertyPath: "volume",
+ });
+}
+
+export function resolveEffectiveAudioGain({
+ element,
+ trackMuted = false,
+ localTime,
+}: {
+ element: AudioCapableElement;
+ trackMuted?: boolean;
+ localTime: number;
+}): number {
+ if (trackMuted || element.muted === true) {
+ return 0;
+ }
+
+ const resolvedDb = resolveNumberAtTime({
+ baseValue: element.volume ?? 0,
+ animations: element.animations,
+ propertyPath: "volume",
+ localTime,
+ });
+
+ return dBToLinear(resolvedDb);
+}
+
+export function buildAudioGainAutomation({
+ element,
+ trackMuted = false,
+ fromLocalTime,
+ toLocalTime,
+ stepSeconds = DEFAULT_STEP_SECONDS,
+}: {
+ element: AudioCapableElement;
+ trackMuted?: boolean;
+ fromLocalTime: number;
+ toLocalTime: number;
+ stepSeconds?: number;
+}): Array<{ localTime: number; gain: number }> {
+ const startTime = Math.max(0, fromLocalTime);
+ const endTime = Math.max(startTime, toLocalTime);
+ const safeStep =
+ Number.isFinite(stepSeconds) && stepSeconds > 0
+ ? stepSeconds
+ : DEFAULT_STEP_SECONDS;
+ const points: Array<{ localTime: number; gain: number }> = [];
+
+ for (let localTime = startTime; localTime < endTime; localTime += safeStep) {
+ points.push({
+ localTime,
+ gain: resolveEffectiveAudioGain({
+ element,
+ trackMuted,
+ localTime,
+ }),
+ });
+ }
+
+ points.push({
+ localTime: endTime,
+ gain: resolveEffectiveAudioGain({
+ element,
+ trackMuted,
+ localTime: endTime,
+ }),
+ });
+
+ return points;
+}
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