Function ParseRotation

src/video_frame.ts:852–860

(rotation?: number)

};

const ParseRotation = (rotation?: number): number => {
	if (rotation === undefined) return 0;
	// Let alignedRotation be the nearest multiple of 90 to rotation, rounding ties towards positive infinity.
	const alignedRotation = Math.ceil(rotation / 90) * 90;
	// Let fullTurns be the greatest multiple of 360 less than or equal to alignedRotation.
	const fullTurns = Math.floor(alignedRotation / 360) * 360;
	// Return |alignedRotation| - |fullTurns|.
	return Math.abs(alignedRotation) - Math.abs(fullTurns);
};

const PickColorSpace = (
	overrideColorSpace: VideoColorSpaceInit | undefined,