private static T GetFieldValue <T>(int Id, BitReader r, FieldMetaData fieldMeta, ColumnMetaData columnMeta, Value32[] palletData, Dictionary <int, Value32> commonData) where T : unmanaged
{
switch (columnMeta.CompressionType)
{
case CompressionType.None:
int bitSize = 32 - fieldMeta.Bits;
if (bitSize > 0)
{
return(r.Read <T>(bitSize));
}
else
{
return(r.Read <T>(columnMeta.Immediate.BitWidth));
}
case CompressionType.Immediate:
return(r.Read <T>(columnMeta.Immediate.BitWidth));
case CompressionType.SignedImmediate:
return(r.ReadSigned <T>(columnMeta.Immediate.BitWidth));
case CompressionType.Common:
if (commonData.TryGetValue(Id, out Value32 val))
{
return(val.As <T>());
}
else
{
return(columnMeta.Common.DefaultValue.As <T>());
}
case CompressionType.Pallet:
uint palletIndex = r.ReadUInt32(columnMeta.Pallet.BitWidth);
T val1 = palletData[palletIndex].As <T>();
return(val1);
}
throw new Exception(string.Format("Unexpected compression type {0}", columnMeta.CompressionType));
}
private static T[] GetFieldValueArray <T>(BitReader r, FieldMetaData fieldMeta, ColumnMetaData columnMeta, Value32[] palletData, Dictionary <int, Value32> commonData, int arraySize) where T : unmanaged
{
switch (columnMeta.CompressionType)
{
case CompressionType.None:
int bitSize = 32 - fieldMeta.Bits;
T[] arr1 = new T[arraySize];
for (int i = 0; i < arr1.Length; i++)
{
if (bitSize > 0)
{
arr1[i] = r.Read <T>(bitSize);
}
else
{
arr1[i] = r.Read <T>(columnMeta.Immediate.BitWidth);
}
}
return(arr1);
case CompressionType.Immediate:
T[] arr2 = new T[arraySize];
for (int i = 0; i < arr2.Length; i++)
{
arr2[i] = r.Read <T>(columnMeta.Immediate.BitWidth);
}
return(arr2);
case CompressionType.SignedImmediate:
T[] arr4 = new T[arraySize];
for (int i = 0; i < arr4.Length; i++)
{
arr4[i] = r.ReadSigned <T>(columnMeta.Immediate.BitWidth);
}
return(arr4);
case CompressionType.PalletArray:
int cardinality = columnMeta.Pallet.Cardinality;
if (arraySize != cardinality)
{
throw new Exception("Struct missmatch for pallet array field?");
}
uint palletArrayIndex = r.ReadUInt32(columnMeta.Pallet.BitWidth);
T[] arr3 = new T[cardinality];
for (int i = 0; i < arr3.Length; i++)
{
arr3[i] = palletData[i + cardinality * (int)palletArrayIndex].As <T>();
}
return(arr3);
}
throw new Exception(string.Format("Unexpected compression type {0}", columnMeta.CompressionType));
}