public ValueDecoderSpec(RawDecoderSpec rawDecoderSpec, ValueConversionSpec valueConversionSpec,
DisplayConversionSpec displayConversionSpec)
{
RawDecoderSpec = rawDecoderSpec;
ValueConversionSpec = valueConversionSpec;
DisplayConversionSpec = displayConversionSpec;
}
protected NumericBufferBase(IDecodable decodable) : base(decodable)
{
var decoder = decodable.DecoderSpec;
Raw = decoder.RawDecoderSpec;
Val = decoder.ValueConversionSpec;
Stride = (int)Raw.Stride;
}
private void CreateValueConversionSpec(Mdf4CCBlock c, ref ValueConversionSpec val, ref DisplayConversionSpec disp)
{
if (c == null)
{
return;
}
var p = c.Params;
if (ChannelGroup.File.ConversionCache.TryGetValue(c, out var specs))
{
val = specs.Item1;
disp = specs.Item2;
return;
}
void MappingHelper(int numBlocks, ref ValueConversionSpec val, ref DisplayConversionSpec disp)
{
var blks = Enumerable.Range(0, numBlocks).Select(k => c.Ref(k)).ToArray();
var singleConversion = blks.OfType <Mdf4CCBlock>().ToArray();
if (singleConversion.Length > 1)
{
Check.NotImplemented();
}
else if (singleConversion.Length == 1)
{
CreateValueConversionSpec(singleConversion[0], ref val, ref disp);
}
var lookup = new DisplayConversionSpec.LookupTable();
for (int i = 0; i < blks.Length; i++)
{
if (blks[i] is Mdf4TXBlock str)
{
lookup[p[i]] = str;
}
}
disp = lookup;
}
switch (c.Data.ConversionType)
{
case Mdf4CCBlock.ConversionType.Identity:
val = ValueConversionSpec.Default;
break;
case Mdf4CCBlock.ConversionType.Linear:
if (c.Params[0] == 0 && c.Params[1] == 1)
{
val = ValueConversionSpec.Default;
}
else
{
val = new ValueConversionSpec.Linear(p[0], p[1]);
}
break;
case Mdf4CCBlock.ConversionType.Rational:
if (p[0] == 0 && p[3] == 0 && p[4] == 0 && p[5] == 1)
{
if (p[2] == 0 && p[1] == 1)
{
val = ValueConversionSpec.Default;
}
else
{
val = new ValueConversionSpec.Linear(p[2], p[1]);
}
}
else
{
val = new ValueConversionSpec.Rational3(p[2], p[1], p[0], p[5], p[4], p[3]);
}
break;
case Mdf4CCBlock.ConversionType.AlgebraicText:
Check.NotImplemented(new NotImplementedException());
break;
case Mdf4CCBlock.ConversionType.ValToValInterp:
if (p.Length == 4 && p[0] == p[1] && p[2] == p[3])
{
val = ValueConversionSpec.Default;
}
else
{
Check.NotImplemented(new NotImplementedException());
}
break;
case Mdf4CCBlock.ConversionType.ValToValNoInterp:
Check.NotImplemented(new NotImplementedException());
break;
case Mdf4CCBlock.ConversionType.ValRangeToValTab:
Check.NotImplemented(new NotImplementedException());
break;
case Mdf4CCBlock.ConversionType.ValToTextScaleTab:
{
MappingHelper(p.Length, ref val, ref disp);
break;
}
case Mdf4CCBlock.ConversionType.ValRangeToTextScaleTab:
{
var noRange = true;
for (var i = 0; i < p.Length; i += 2)
{
noRange &= p[i] == p[i + 1];
}
if (!noRange)
{
Check.NotImplemented();
}
MappingHelper(p.Length / 2 + 1, ref val, ref disp);
break;
}
case Mdf4CCBlock.ConversionType.TextToVal:
Check.NotImplemented(new NotImplementedException());
break;
case Mdf4CCBlock.ConversionType.TextToText:
Check.NotImplemented(new NotImplementedException());
break;
case Mdf4CCBlock.ConversionType.BitfieldText:
Check.NotImplemented(new NotImplementedException());
break;
default:
throw new ArgumentOutOfRangeException();
}
ChannelGroup.File.ConversionCache[c] = (val, disp);
}