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authorMaze Winther <mazewinther@gmail.com>2026-04-20 11:31:17 +0200
committerMaze Winther <mazewinther@gmail.com>2026-04-20 11:31:17 +0200
commit3e89d2998588f8e35c524e523ba2ee853f0f6475 (patch)
tree57221f96c1259b3b07e3ddf8c1adefc502b9d8eb /apps/web/src/lib/fps/utils.ts
parent729d10592f4e802f91c555c309ff3ba4b119f843 (diff)
downloadopencut-3e89d2998588f8e35c524e523ba2ee853f0f6475.tar.gz
refactor: restructure files to their domains, new preview overlay system, and dep graph
Diffstat (limited to 'apps/web/src/lib/fps/utils.ts')
-rw-r--r--apps/web/src/lib/fps/utils.ts95
1 files changed, 0 insertions, 95 deletions
diff --git a/apps/web/src/lib/fps/utils.ts b/apps/web/src/lib/fps/utils.ts
deleted file mode 100644
index 932788c4..00000000
--- a/apps/web/src/lib/fps/utils.ts
+++ /dev/null
@@ -1,95 +0,0 @@
-import type { FrameRate } from "opencut-wasm";
-import type { MediaAsset } from "@/lib/media/types";
-
-type MediaAssetFpsInput = Pick<MediaAsset, "type" | "fps">;
-
-const STANDARD_FRAME_RATES: Array<{ value: number; rate: FrameRate }> = [
- { value: 24_000 / 1_001, rate: { numerator: 24_000, denominator: 1_001 } },
- { value: 24, rate: { numerator: 24, denominator: 1 } },
- { value: 25, rate: { numerator: 25, denominator: 1 } },
- { value: 30_000 / 1_001, rate: { numerator: 30_000, denominator: 1_001 } },
- { value: 30, rate: { numerator: 30, denominator: 1 } },
- { value: 48, rate: { numerator: 48, denominator: 1 } },
- { value: 50, rate: { numerator: 50, denominator: 1 } },
- { value: 60_000 / 1_001, rate: { numerator: 60_000, denominator: 1_001 } },
- { value: 60, rate: { numerator: 60, denominator: 1 } },
- { value: 120, rate: { numerator: 120, denominator: 1 } },
-];
-
-const STANDARD_FRAME_RATE_TOLERANCE = 0.01;
-
-export function frameRateToFloat(rate: FrameRate): number {
- return rate.numerator / rate.denominator;
-}
-
-export function frameRatesEqual(a: FrameRate, b: FrameRate): boolean {
- return a.numerator === b.numerator && a.denominator === b.denominator;
-}
-
-export function floatToFrameRate(fps: number): FrameRate {
- const standard = STANDARD_FRAME_RATES.find(
- (candidate) => Math.abs(fps - candidate.value) <= STANDARD_FRAME_RATE_TOLERANCE,
- );
- if (standard) return standard.rate;
-
- if (Number.isInteger(fps)) {
- return { numerator: fps, denominator: 1 };
- }
-
- const ARBITRARY_DENOMINATOR = 1_000_000;
- const scaledNumerator = Math.round(fps * ARBITRARY_DENOMINATOR);
- const divisor = gcd(scaledNumerator, ARBITRARY_DENOMINATOR);
- return {
- numerator: scaledNumerator / divisor,
- denominator: ARBITRARY_DENOMINATOR / divisor,
- };
-}
-
-function gcd(left: number, right: number): number {
- let a = Math.abs(left);
- let b = Math.abs(right);
- while (b !== 0) {
- const remainder = a % b;
- a = b;
- b = remainder;
- }
- return a || 1;
-}
-
-export function getHighestImportedVideoFps({
- mediaAssets,
-}: {
- mediaAssets: MediaAssetFpsInput[];
-}): number | null {
- let highestFps: number | null = null;
-
- for (const asset of mediaAssets) {
- const fps = asset.fps ?? Number.NaN;
- if (asset.type !== "video") continue;
- if (!Number.isFinite(fps) || fps <= 0) continue;
-
- highestFps = highestFps === null ? fps : Math.max(highestFps, fps);
- }
-
- return highestFps;
-}
-
-export function getRaisedProjectFpsForImportedMedia({
- currentFps,
- importedAssets,
-}: {
- currentFps: FrameRate;
- importedAssets: MediaAssetFpsInput[];
-}): FrameRate | null {
- const highestImportedVideoFps = getHighestImportedVideoFps({
- mediaAssets: importedAssets,
- });
-
- const currentFpsFloat = frameRateToFloat(currentFps);
-
- if (highestImportedVideoFps === null || highestImportedVideoFps <= currentFpsFloat) {
- return null;
- }
-
- return floatToFrameRate(highestImportedVideoFps);
-}