/// <summary>
/// Writes font models out into binary stream.
/// </summary>
/// <param name="font">NN font to write.</param>
/// <param name="writer">Binary data writer.</param>
/// <returns>Size of bytes written out.</returns>
private uint WriteModels(NNFont font, DataWriter writer)
{
Helper.ThrowIfNull(font);
Helper.ThrowIfNull(writer);
uint size = 0;
// write positions.
size += writer.Write(font.Models.Count);
foreach (HmmModelType type in font.Models.Keys)
{
size += writer.Write((int)type);
size += font.Models[type].Position.Save(writer);
}
// write windows.
size += writer.Write(font.Models.Count - 1);
foreach (HmmModelType type in font.Models.Keys)
{
if (type != HmmModelType.VoicedUnvoiced)
{
size += writer.Write((int)type);
size += font.Models[type].WindowSet.Save(writer);
}
}
return size;
}
/// <summary>
/// Writes font out into binary stream.
/// </summary>
/// <param name="font">NN font to write.</param>
/// <param name="writer">Binary data.</param>
/// <param name="language">Language.</param>
/// <param name="schemaFile">Schema file.</param>
/// <param name="outVarFile">Out var file.</param>
/// <param name="phoneToIdIndexes">Phone id mapping.</param>
/// <returns>Size of bytes written out.</returns>
public uint Write(NNFont font, DataWriter writer, Language language, string schemaFile, string outVarFile, Dictionary<string, string> phoneToIdIndexes)
{
Helper.ThrowIfNull(font);
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(language);
Helper.ThrowIfNull(phoneToIdIndexes);
Helper.ThrowIfFileNotExist(schemaFile);
Helper.ThrowIfFileNotExist(outVarFile);
font.StringPool.Reset();
// write header.
uint size = WriteFontHeader(font, writer);
// write feature and variance.
font.Header.QuestionOffset = size;
font.Header.QuestionSize = Write(writer, font.StringPool, language, schemaFile, outVarFile, phoneToIdIndexes);
size += font.Header.QuestionSize;
// write model.
font.Header.ModelSetOffset = size;
font.Header.ModelSetSize = WriteModels(font, writer);
size += font.Header.ModelSetSize;
// write string pool.
font.Header.StringPoolOffset = size;
font.Header.StringPoolSize = Write(font.StringPool, writer);
size += (uint)font.Header.StringPoolSize;
font.Header.CodebookOffset = 0;
font.Header.CodebookSize = 0;
font.Header.FontSize = size - font.Header.FontSizeOffset;
using (PositionRecover recover = new PositionRecover(writer, 0))
{
font.Header.Write(writer);
}
return size;
}
/// <summary>
/// Writes font header into binary stream.
/// </summary>
/// <param name="font">Font to write.</param>
/// <param name="writer">Data binary writer.</param>
/// <returns>Size of bytes written out.</returns>
protected virtual uint WriteFontHeader(NNFont font, DataWriter writer)
{
Helper.ThrowIfNull(font);
Helper.ThrowIfNull(writer);
return font.Header.Write(writer);
}
