1 files changed, 10 insertions, 126 deletions

diff --git a/apps/web/src/services/renderer/nodes/blur-background-node.ts b/apps/web/src/services/renderer/nodes/blur-background-node.ts
index 4cb45b33..d20e2533 100644
--- a/apps/web/src/services/renderer/nodes/blur-background-node.ts
+++ b/apps/web/src/services/renderer/nodes/blur-background-node.ts
@@ -1,13 +1,6 @@
-import { buildGaussianBlurPasses, intensityToSigma } from "@/lib/effects/definitions/blur";
-import { mediaTimeToSeconds } from "opencut-wasm";
-import { getSourceTimeAtClipTime } from "@/lib/retime";
-import { videoCache } from "@/services/video-cache/service";
+import type { EffectPass } from "@/lib/effects/types";
 import type { RetimeConfig } from "@/lib/timeline";
-import type { CanvasRenderer } from "../canvas-renderer";
-import { createOffscreenCanvas } from "../canvas-utils";
-import { gpuRenderer } from "../gpu-renderer";
 import { BaseNode } from "./base-node";
-import { loadImageSource, type CachedImageSource } from "./image-node";
 
 export type BlurBackgroundNodeParams = {
 	mediaId: string;
@@ -22,127 +15,18 @@ export type BlurBackgroundNodeParams = {
 	blurIntensity: number;
 };
 
-type BackdropSource = {
+export type BackdropSource = {
 	source: CanvasImageSource;
 	width: number;
 	height: number;
 };
 
-export class BlurBackgroundNode extends BaseNode<BlurBackgroundNodeParams> {
-	private cachedImageSource: Promise<CachedImageSource> | null;
-
-	constructor(params: BlurBackgroundNodeParams) {
-		super(params);
-		this.cachedImageSource =
-			params.mediaType === "image" ? loadImageSource(params.url) : null;
-	}
-
-	private isInRange({ time }: { time: number }): boolean {
-		const localTime = time - this.params.timeOffset;
-		return localTime >= 0 && localTime < this.params.duration;
-	}
-
-	private getSourceLocalTime({ time }: { time: number }): number {
-		const clipTime = time - this.params.timeOffset;
-		return (
-			this.params.trimStart +
-			getSourceTimeAtClipTime({
-				clipTime,
-				retime: this.params.retime,
-			})
-		);
-	}
-
-	private async getBackdropSource({
-		time,
-	}: {
-		time: number;
-	}): Promise<BackdropSource | null> {
-		if (this.params.mediaType === "video") {
-			const sourceTimeTicks = this.getSourceLocalTime({ time });
-			const frame = await videoCache.getFrameAt({
-				mediaId: this.params.mediaId,
-				file: this.params.file,
-				time: mediaTimeToSeconds({ time: sourceTimeTicks }),
-			});
-
-			if (!frame) {
-				return null;
-			}
-
-			return {
-				source: frame.canvas,
-				width: frame.canvas.width,
-				height: frame.canvas.height,
-			};
-		}
-
-		if (!this.cachedImageSource) {
-			return null;
-		}
-
-		const { source, width, height } = await this.cachedImageSource;
-		return { source, width, height };
-	}
-
-	async render({ renderer, time }: { renderer: CanvasRenderer; time: number }) {
-		await super.render({ renderer, time });
-
-		if (!this.isInRange({ time })) {
-			return;
-		}
-
-		const backdropSource = await this.getBackdropSource({ time });
-		if (!backdropSource) {
-			return;
-		}
-
-		const offscreen = createOffscreenCanvas({
-			width: renderer.width,
-			height: renderer.height,
-		});
-		const offscreenCtx = offscreen.getContext("2d") as
-			| CanvasRenderingContext2D
-			| OffscreenCanvasRenderingContext2D
-			| null;
-		if (!offscreenCtx) {
-			return;
-		}
-
-		const coverScale = Math.max(
-			renderer.width / backdropSource.width,
-			renderer.height / backdropSource.height,
-		);
-		const scaledWidth = backdropSource.width * coverScale;
-		const scaledHeight = backdropSource.height * coverScale;
-		const offsetX = (renderer.width - scaledWidth) / 2;
-		const offsetY = (renderer.height - scaledHeight) / 2;
-
-		offscreenCtx.drawImage(
-			backdropSource.source,
-			offsetX,
-			offsetY,
-			scaledWidth,
-			scaledHeight,
-		);
-
-		const passes = buildGaussianBlurPasses({
-			sigmaX: intensityToSigma({ intensity: this.params.blurIntensity, resolution: renderer.width, reference: 1920 }),
-			sigmaY: intensityToSigma({ intensity: this.params.blurIntensity, resolution: renderer.height, reference: 1080 }),
-		});
-		const effectResult = gpuRenderer.applyEffect({
-			source: offscreen as CanvasImageSource,
-			width: renderer.width,
-			height: renderer.height,
-			passes,
-		});
-
-		renderer.context.drawImage(
-			effectResult,
-			0,
-			0,
-			renderer.width,
-			renderer.height,
-		);
-	}
+export interface ResolvedBlurBackgroundNodeState {
+	backdropSource: BackdropSource;
+	passes: EffectPass[];
 }
+
+export class BlurBackgroundNode extends BaseNode<
+	BlurBackgroundNodeParams,
+	ResolvedBlurBackgroundNodeState
+> {}