Automatic switch of aspect ratio for background

If the orig aspect ratio (width / height) is below or equal to 1.5, switch to EAspect.LetterBox. If not, leave it at EAspect.Crop (like in Vocaluxe before).

Unfortunately the acinerella library, used by Vocaluxe, don't support reading of the DAR value of the video file. So the SAR value has to be correct in the video file, to see this automatic in action.

Vocaluxe/Screens/CScreenSing.cs

@@ -1,4 +1,4 @@
-#region license
+#region license
 // This file is part of Vocaluxe.
 // 
 // Vocaluxe is free software: you can redistribute it and/or modify
@@ -112,7 +112,7 @@ namespace Vocaluxe.Screens
         private float _Length = -1f;
 
         private CVideoStream _CurrentVideo;
-        private EAspect _VideoAspect = EAspect.Crop;
+        private EAspect _VideoAspect = EAspect.Automatic;
         private CTextureRef _CurrentWebcamFrameTexture;
         private CTextureRef _Background;
 
@@ -794,18 +794,21 @@ namespace Vocaluxe.Screens
                 if (_CurrentVideo != null && CConfig.Config.Video.VideosInSongs == EOffOn.TR_CONFIG_ON && !_Webcam)
                 {
                     background = _CurrentVideo.Texture;
-                    aspect = _VideoAspect;
                 }
                 else if (_Webcam)
                 {
                     background = _CurrentWebcamFrameTexture;
-                    aspect = _VideoAspect;
                 }
                 else
                     background = _Background;
                 if (background != null)
                 {
                     SRectF bounds = CSettings.RenderRect;
+					
+					if (_VideoAspect == EAspect.Automatic)
+                        _VideoAspect = (background.OrigAspect <= 1.5 ? EAspect.LetterBox : EAspect.Crop);
+                    aspect = _VideoAspect;
+					
                     SRectF rect = CHelper.FitInBounds(bounds, background.OrigAspect, aspect);
                     CDraw.DrawTexture(background, rect, background.Color, bounds);
                 }
@@ -1087,7 +1090,7 @@ namespace Vocaluxe.Screens
             {
                 _CurrentVideo = CVideo.Load(Path.Combine(song.Folder, song.VideoFileName));
                 CVideo.Skip(_CurrentVideo, song.Start, song.VideoGap);
-                _VideoAspect = song.VideoAspect;
+                _VideoAspect = EAspect.Automatic;
             }
 
             CDraw.RemoveTexture(ref _Background);
@@ -1828,4 +1831,4 @@ namespace Vocaluxe.Screens
             }
         }
     }
-}
+}