Method grayToAlpha

src/com/cloudream/ishow/algorithm/Effect.java:246–256

(final Bitmap bitmap)

	}
	
	public static Bitmap grayToAlpha(final Bitmap bitmap)
	{
		if(bitmap == null)
			return null;
		
//		Bitmap result = bitmap.copy(Bitmap.Config.ARGB_8888, true);
		Bitmap result = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Bitmap.Config.ARGB_8888);
		result.setHasAlpha(true);
		nativeGrayToAlpha(bitmap, result);
		return result;
	}
	
	public static Bitmap colorToAlpha(int color, final Bitmap bitmap)
	{