[ImageUtil] Deprecate useless CalculateBufferSize (#784)

* [ImageUtil] Deprecate useless CalculateBufferSize
   - Added specific level information of deprecated API

diff --git a/src/Tizen.Multimedia.Util/ImageUtil/ImageUtil.cs b/src/Tizen.Multimedia.Util/ImageUtil/ImageUtil.cs
index ecb1ce3..4e62803 100644 (file)
--- a/src/Tizen.Multimedia.Util/ImageUtil/ImageUtil.cs
+++ b/src/Tizen.Multimedia.Util/ImageUtil/ImageUtil.cs
@@ -60,6 +60,7 @@ namespace Tizen.Multimedia.Util
         /// </exception>
         /// <exception cref="ArgumentException"><paramref name="colorSpace"/> is invalid.</exception>
         /// <since_tizen> 4 </since_tizen>
+        [Obsolete("Please do not use! This will be deprecated in level 6.")]
         public static int CalculateBufferSize(Size resolution, ColorSpace colorSpace)
         {
             if (resolution.Width <= 0)