Support >2 channels (#13)

* Read number of channels correctly

* Revert formatting

* Corrected frequencies / and dont throw

* Doc SampleMetadata

Author: Masusder

Fmod5Sharp/CodecRebuilders/FmodVorbisRebuilder.cs

@@ -176,7 +176,7 @@ private static void ReadSamplePackets(BinaryReader inputReader, out List<int> pa
             {
                 var packetSize = inputReader.ReadUInt16();
 
-                if (packetSize == 0)
+                if (packetSize == 0 || packetSize == 0xFFFF)
                     break; //EOS
 
                 packetLengths.Add(packetSize);

Fmod5Sharp/FmodTypes/FmodSampleMetadata.cs

@@ -4,7 +4,8 @@
 
 namespace Fmod5Sharp.FmodTypes
 {
-	public class FmodSampleMetadata : IBinaryReadable
+    //Can be verified against "FMOD::CodecFSB5::decodeSubSoundHeader" in fmod.dll
+    public class FmodSampleMetadata : IBinaryReadable
 	{
 		internal bool HasAnyChunks;
 		internal uint FrequencyId;
@@ -24,10 +25,16 @@ void IBinaryReadable.Read(BinaryReader reader)
 
 			HasAnyChunks = (encoded & 1) == 1; //Bit 0
 			FrequencyId = (uint) encoded.Bits( 1, 4); //Bits 1-4
-			var pow2 = (int) encoded.Bits(5, 2); //Bits 5-6
-			NumChannels = 1 << pow2;
-			if (NumChannels > 2)
-				throw new("> 2 channels not supported");
+
+			int channelBits = (int)encoded.Bits(5, 2); //Bits 5-6
+			NumChannels = channelBits switch
+			{
+				0 => 1,
+				1 => 2,
+				2 => 6,
+				3 => 8,
+				_ => 0
+			};
 
 			IsStereo = NumChannels == 2;
 

Fmod5Sharp/FsbLoader.cs

@@ -10,9 +10,10 @@ public static class FsbLoader
     {
         internal static readonly Dictionary<uint, int> Frequencies = new()
         {
-            { 1, 8000 },
+            { 0, 4_000 },
+            { 1, 8_000 },
             { 2, 11_000 },
-            { 3, 11_025 },
+            { 3, 12_000 },
             { 4, 16_000 },
             { 5, 22_050 },
             { 6, 24_000 },