private IList <VariantInfo> GetAdaptiveVariants()
{
List <VariantInfo> adaptiveVariants = new List <VariantInfo>();
NativePlayer.AdaptiveVariantCallback callback = (int bandwidth, int width, int height, IntPtr userData) =>
{
adaptiveVariants.Add(new VariantInfo(bandwidth, width, height));
return(true);
};
NativePlayer.ForeachAdaptiveVariants(Player.Handle, callback, IntPtr.Zero).
ThrowIfFailed(Player, "Failed to get the information of adaptive variants");
return(adaptiveVariants.AsReadOnly());
}