protected int ReadInt(int offset, VDType.VDTypeCode c)
{
switch (c)
{
case VDType.VDTypeCode.int8:
return(d[offset]);
case VDType.VDTypeCode.sint8:
return((sbyte)d[offset]);
case VDType.VDTypeCode.sint16_LSB:
case VDType.VDTypeCode.sint16_LSB_MSB:
return(BitConverter.ToInt16(d, offset));
case VDType.VDTypeCode.sint32_LSB:
case VDType.VDTypeCode.sint32_LSB_MSB:
return(BitConverter.ToInt32(d, offset));
case VDType.VDTypeCode.int16_LSB:
case VDType.VDTypeCode.int16_LSB_MSB:
return(BitConverter.ToUInt16(d, offset));
case VDType.VDTypeCode.int32_LSB:
case VDType.VDTypeCode.int32_LSB_MSB:
return((int)BitConverter.ToUInt32(d, offset));
default:
throw new NotImplementedException();
}
}
protected void AddIntEntry(string tag, VDType.VDTypeCode c)
{
int len = 0;
switch (c)
{
case VDType.VDTypeCode.int8:
case VDType.VDTypeCode.sint8:
len = 1;
break;
case VDType.VDTypeCode.int16_LSB:
case VDType.VDTypeCode.int16_MSB:
case VDType.VDTypeCode.sint16_LSB:
case VDType.VDTypeCode.sint16_MSB:
len = 2;
break;
case VDType.VDTypeCode.int32_LSB:
case VDType.VDTypeCode.int32_MSB:
case VDType.VDTypeCode.sint32_LSB:
case VDType.VDTypeCode.sint32_MSB:
case VDType.VDTypeCode.int16_LSB_MSB:
case VDType.VDTypeCode.sint16_LSB_MSB:
len = 4;
break;
case VDType.VDTypeCode.int32_LSB_MSB:
case VDType.VDTypeCode.sint32_LSB_MSB:
len = 8;
break;
default:
throw new NotSupportedException();
}
var e = new VDType {
Offset = cur_entry, Code = c, Length = len
};
entries[tag] = e;
cur_entry += len;
}
protected void WriteInt(int offset, VDType.VDTypeCode c, int v)
{
switch (c)
{
case VDType.VDTypeCode.int8:
case VDType.VDTypeCode.sint8:
d[offset] = (byte)(v & 0xff);
break;
case VDType.VDTypeCode.int16_LSB:
case VDType.VDTypeCode.sint16_LSB:
d[offset] = (byte)(v & 0xff);
d[offset + 1] = (byte)((v >> 8) & 0xff);
break;
case VDType.VDTypeCode.int32_LSB:
case VDType.VDTypeCode.sint32_LSB:
d[offset] = (byte)(v & 0xff);
d[offset + 1] = (byte)((v >> 8) & 0xff);
d[offset + 2] = (byte)((v >> 16) & 0xff);
d[offset + 3] = (byte)((v >> 24) & 0xff);
break;
case VDType.VDTypeCode.int16_MSB:
case VDType.VDTypeCode.sint16_MSB:
d[offset] = (byte)((v >> 8) & 0xff);
d[offset + 1] = (byte)(v & 0xff);
break;
case VDType.VDTypeCode.int32_MSB:
case VDType.VDTypeCode.sint32_MSB:
d[offset] = (byte)((v >> 24) & 0xff);
d[offset + 1] = (byte)((v >> 16) & 0xff);
d[offset + 2] = (byte)((v >> 8) & 0xff);
d[offset + 3] = (byte)(v & 0xff);
break;
case VDType.VDTypeCode.int16_LSB_MSB:
case VDType.VDTypeCode.sint16_LSB_MSB:
d[offset] = (byte)(v & 0xff);
d[offset + 1] = (byte)((v >> 8) & 0xff);
d[offset + 2] = (byte)((v >> 8) & 0xff);
d[offset + 3] = (byte)(v & 0xff);
break;
case VDType.VDTypeCode.int32_LSB_MSB:
case VDType.VDTypeCode.sint32_LSB_MSB:
d[offset] = (byte)(v & 0xff);
d[offset + 1] = (byte)((v >> 8) & 0xff);
d[offset + 2] = (byte)((v >> 16) & 0xff);
d[offset + 3] = (byte)((v >> 24) & 0xff);
d[offset + 4] = (byte)((v >> 24) & 0xff);
d[offset + 5] = (byte)((v >> 16) & 0xff);
d[offset + 6] = (byte)((v >> 8) & 0xff);
d[offset + 7] = (byte)(v & 0xff);
break;
default:
throw new NotImplementedException();
}
}
protected void AddIntEntry(string tag, VDType.VDTypeCode c, int default_val)
{
AddIntEntry(tag, c);
WriteInt(tag, default_val);
}
