public static extern AvifResult AvifDecoderNthImage(ref AvifDecoder decoder, int frameIndex);
public static extern AvifResult AvifDecoderParse(ref AvifDecoder decoder, ref AvifRoData rawInput);
public static extern AvifResult AvifDecoderNextImage(ref AvifDecoder decoder);
public static extern void AvifDecoderDestroy(ref AvifDecoder decoder);