Merge pull request #2378 from JeromeMartinez/SphericalVideo2

Spherical Video 2 support, fix BF4 support with 0.32 readout, update

Author: JeromeMartinez

Source/MediaInfo/File__Analyze_Buffer_MinimizeSize.cpp

@@ -284,9 +284,9 @@ void File__Analyze::Get_BFP4_(int8u  Bits, float32 &Info)
     int32s Integer=(int32s)BS->Get4(Bits);
     int32u Fraction=BS->Get4(32-Bits);
     BS_End();
-    if (Integer>=(1<<Bits)/2)
+    if (Bits && Integer>=(1<<Bits)/2)
         Integer-=1<<Bits;
-    Info=Integer+((float32)Fraction)/(1<<(32-Bits));
+    Info=Integer+((float32)Fraction)/(1LL<<(32-Bits));
 }
 
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