/// <summary>
/// Calculate the target cost for position in syllable feature.
/// </summary>
/// <param name="src">Source PosInSyllable feature.</param>
/// <param name="target">Target PosInSyllable feature.</param>
/// <returns>Cost.</returns>
private float CalcTargetCostPosInSyl(PosInSyllable src, PosInSyllable target)
{
return CalcTargetCost(TtsFeature.PosInSyllable, (int)src, (int)target);
}
/// <summary>
/// Build unit full name, this is, prefix "os_", "nc_" or "cd_" to the unit name.
/// </summary>
/// <param name="name">Unit name.</param>
/// <param name="slicePos">Position in syllable feature of the unit.</param>
/// <returns>Full name string of the unit.</returns>
public static string BuildUnitFullName(string name, PosInSyllable slicePos)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException("name");
}
if (name.StartsWith("os_", StringComparison.Ordinal) ||
name.StartsWith("nc_", StringComparison.Ordinal) ||
name.StartsWith("cd_", StringComparison.Ordinal))
{
throw new ArgumentException("unit name [{0}] should be start with os_, nc_ or cd_", name);
}
switch (slicePos)
{
case PosInSyllable.Onset:
case PosInSyllable.OnsetNext:
return "os_" + name;
case PosInSyllable.NucleusInV:
case PosInSyllable.NucleusInVC:
case PosInSyllable.NucleusInCV:
case PosInSyllable.NucleusInCVC:
return "nc_" + name;
case PosInSyllable.CodaNext:
case PosInSyllable.Coda:
return "cd_" + name;
default:
Debug.Assert(false);
string str1 = "Only Onset, OnsetNext, NucleusInV, NucleusInVC, NucleusInCV, NucleusInCVC, CodaNext or Code is ";
string str2 = "supported for unit full name generation. ";
string str3 = "But position in syllable [{0}] is found.";
string message = string.Format(CultureInfo.InvariantCulture, str1 + str2 + str3, slicePos);
throw new NotSupportedException(message);
}
}
/// <summary>
/// Whether is vowel for position in syllable.
/// </summary>
/// <param name="posInSyllable">Position in syllable.</param>
/// <returns>True for vowel.</returns>
public static bool IsVowel(PosInSyllable posInSyllable)
{
return posInSyllable == PosInSyllable.NucleusInV ||
posInSyllable == PosInSyllable.NucleusInVC ||
posInSyllable == PosInSyllable.NucleusInCV ||
posInSyllable == PosInSyllable.NucleusInCVC;
}
/// <summary>
/// Estimate position in syllable for each slice in a slice set.
/// </summary>
/// <param name="slices">Slice collection to estimate.</param>
/// <returns>Estimated result of position in syllable.</returns>
private PosInSyllable[] EstimatePosInSyllable(string[] slices)
{
PosInSyllable[] pis = new PosInSyllable[slices.Length];
int nucleusIndex = -1;
for (int sliceIndex = 0; sliceIndex < slices.Length; sliceIndex++)
{
SliceData slicedata = Localor.GetSliceData(this.Language);
TtsMetaUnit ttsMetaUnit = new TtsMetaUnit(this.Language);
ttsMetaUnit.Name = slices[sliceIndex];
if (slicedata.IsNucleus(ttsMetaUnit))
{
if (sliceIndex == 0)
{
if (sliceIndex == slices.Length - 1)
{
pis[sliceIndex] = PosInSyllable.NucleusInV;
}
else
{
pis[sliceIndex] = PosInSyllable.NucleusInVC;
}
}
else
{
if (sliceIndex == slices.Length - 1)
{
pis[sliceIndex] = PosInSyllable.NucleusInCV;
}
else
{
pis[sliceIndex] = PosInSyllable.NucleusInCVC;
}
}
nucleusIndex = sliceIndex;
break;
}
}
for (int sliceIndex = 0; sliceIndex < nucleusIndex; sliceIndex++)
{
pis[sliceIndex] = PosInSyllable.Onset;
}
for (int sliceIndex = nucleusIndex + 1; sliceIndex < slices.Length; sliceIndex++)
{
pis[sliceIndex] = PosInSyllable.Coda;
}
return pis;
}
/// <summary>
/// Map slice position.
/// </summary>
/// <param name="slicePos">Slice Position.</param>
/// <returns>Prefix string of slice position.</returns>
public static string MapSlicePos(PosInSyllable slicePos)
{
switch (slicePos)
{
case PosInSyllable.Onset:
case PosInSyllable.OnsetNext:
return "os_";
case PosInSyllable.NucleusInV:
case PosInSyllable.NucleusInVC:
case PosInSyllable.NucleusInCV:
case PosInSyllable.NucleusInCVC:
return "nc_";
case PosInSyllable.CodaNext:
case PosInSyllable.Coda:
return "cd_";
default:
System.Diagnostics.Debug.Assert(false);
string str1 = "Only Onset, OnsetNext, NucleusInV, NucleusInVC, NucleusInCV, NucleusInCVC, CodaNext or Coda is ";
string str2 = "supported for mapping position to syllable to string. ";
string str3 = "But position to syllable [{0}] is found.";
string message = string.Format(CultureInfo.InvariantCulture, str1 + str2 + str3, slicePos);
throw new NotSupportedException(message);
}
}