Method constructor

src/video_frame.ts:129–258

(
		data: CanvasImageSource | AllowSharedBufferSource | Frame,
		init: VideoFrameInit | VideoFrameBufferInit = {},
	)

	constructor(source: CanvasImageSource, init?: VideoFrameInit);
	constructor(data: Frame, init?: VideoFrameInit);
	constructor(
		data: CanvasImageSource | AllowSharedBufferSource | Frame,
		init: VideoFrameInit | VideoFrameBufferInit = {},
	) {
		if (
			data instanceof ArrayBuffer
			|| (typeof SharedArrayBuffer !== 'undefined' && data instanceof SharedArrayBuffer)
			|| ArrayBuffer.isView(data)
		) {
			const bufferInit = init as VideoFrameBufferInit;

			// If init is not a valid VideoFrameBufferInit, throw a TypeError.
			if (!isValidVideoFrameBufferInit(bufferInit)) {
				throw new TypeError('Invalid VideoFrameBufferInit');
			}

			// Let defaultRect be «[ "x:" → 0, "y" → 0, "width" → init.codedWidth, "height" → init.codedHeight ]».
			const defaultRect: DOMRectInit
				= { x: 0, y: 0, width: bufferInit.codedWidth, height: bufferInit.codedHeight };

			// Let overrideRect be undefined. If init.visibleRect exists, assign its value to overrideRect.
			const overrideRect = bufferInit.visibleRect;

			// Let parsedRect be the result of running the Parse Visible Rect algorithm.
			const parsedRect = ParseVisibleRect(
				defaultRect, overrideRect, bufferInit.codedWidth, bufferInit.codedHeight, bufferInit.format,
			);

			// Let optLayout be undefined. If init.layout exists, assign its value to optLayout.
			const optLayout = bufferInit.layout;

			// Let combinedLayout be the result of running the Compute Layout and Allocation Size algorithm.
			const combinedLayout = ComputeLayoutAndAllocationSize(parsedRect, bufferInit.format, optLayout);

			// If data.byteLength is less than combinedLayout’s allocationSize, throw a TypeError.
			const inputByteLength = ArrayBuffer.isView(data) ? data.byteLength : data.byteLength;
			if (inputByteLength < combinedLayout.allocationSize) {
				throw new TypeError(
					`Buffer is too small. Expected at least ${combinedLayout.allocationSize}, got ${inputByteLength}.`,
				);
			}

			// Let resource be a new media resource containing a copy of data.
			this.data = new BufferFrameResource(
				toUint8Array(data).slice(),
				combinedLayout.computedLayouts,
			);

			// Let frame be a new VideoFrame object initialized as follows:
			this.codedWidth = bufferInit.codedWidth;
			this.codedHeight = bufferInit.codedHeight;

			this.visibleRect
				= new DOMRectReadOnlyPolyfill(parsedRect.x, parsedRect.y, parsedRect.width, parsedRect.height);

			// Assign the result of running the Parse Rotation algorithm...
			// eslint-disable-next-line @stylistic/max-len
			// eslint-disable-next-line @typescript-eslint/no-unsafe-argument, @typescript-eslint/no-explicit-any, @typescript-eslint/no-unsafe-member-access