/// <summary>
/// Write out string pool with encrypt.
/// </summary>
/// <param name="stringPool">String pool.</param>
/// <param name="writer">Binary data writer.</param>
/// <returns>Size of bytes written out.</returns>
public static uint Write(StringPool stringPool, DataWriter writer)
{
Helper.ThrowIfNull(stringPool);
Helper.ThrowIfNull(writer);
byte[] encryptedStringPool = new byte[stringPool.Length];
Microsoft.Tts.ServiceProvider.HTSVoiceDataEncrypt.EncryptStringPool(
stringPool.ToArray(), encryptedStringPool);
return writer.Write(encryptedStringPool);
}
/// <summary>
/// Write preselection node data.
/// </summary>
/// <param name="writer">The writer object.</param>
/// <returns>Bytes written.</returns>
public int Write(DataWriter writer)
{
int size = 0;
size += (int)writer.Write(_candidateGroup.Id);
var candidateIds = _candidateGroup.Candidates.Select(c => c.Id);
Debug.Assert(
!candidateIds.Any(x => x < 0),
"Unsupported negative candiate Id.");
bool[] values = new bool[candidateIds.Max() + 1];
foreach (var id in candidateIds)
{
values[id] = true;
}
BitArray bitArray = new BitArray(values);
size += SetUtil.Write(SetType.IndexSet, bitArray, writer);
return size;
}
/// <summary>
/// Save acoustic feakture variacne.
/// </summary>
/// <param name="outVarFile">Acoustic variance file.</param>
/// <param name="writer">Binary data writer.</param>
/// <returns>Size of bytes written out.</returns>
public uint WriteOutVariance(string outVarFile, DataWriter writer)
{
Helper.ThrowIfFileNotExist(outVarFile);
Helper.ThrowIfNull(writer);
uint size = 0;
IEnumerable<string> allLines = Helper.AllFileLines(outVarFile);
size += writer.Write((uint)allLines.Count());
foreach (string line in allLines)
{
size += writer.Write(float.Parse(line));
}
Debug.Assert(size % sizeof(uint) == 0, "Data must be 4-byte aligned.");
return size;
}
/// <summary>
/// Save schema (with feature set and it's value group, mean, variance).
/// </summary>
/// <param name="language">The language.</param>
/// <param name="schemaFile">The schema File.</param>
/// <param name="phoneToIdIndexes">Phone To Id Indexes.</param>
/// <param name="writer">Writer.</param>
/// <param name="stringPool">String pool.</param>
/// <returns>Size of bytes written out.</returns>
public uint WriteSchema(Language language, string schemaFile, Dictionary<string, string> phoneToIdIndexes, DataWriter writer, StringPool stringPool)
{
Helper.ThrowIfFileNotExist(schemaFile);
Helper.ThrowIfNull(phoneToIdIndexes);
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(stringPool);
Helper.ThrowIfNull(language);
uint size = 0;
LexicalAttributeSchema schema = new LexicalAttributeSchema(language);
schema.Load(schemaFile);
List<string> stateFeatureList = new List<string>();
List<string> featureList = new List<string>();
int stateFeatureCount = 0;
for (int i = 0; i < schema.Categories.Count; i++)
{
string name = schema.Categories[i].Name.ToLower();
if (name.IndexOf("state") >= 0)
{
stateFeatureCount++;
if (!stateFeatureList.Contains(name))
{
stateFeatureList.Add(name);
}
}
if (!featureList.Contains(name))
{
featureList.Add(name);
}
}
// write state feature count.
size += writer.Write((uint)stateFeatureList.Count);
size += writer.Write((uint)stateFeatureCount);
// write total feature count.
size += writer.Write((uint)featureList.Count());
Dictionary<string, uint> featureIndex = new Dictionary<string, uint>();
uint index = 0;
foreach (string feature in featureList)
{
size += writer.Write((uint)stringPool.Length);
stringPool.PutString(feature);
featureIndex.Add(feature, index++);
}
// write feature category
size += writer.Write((uint)schema.Categories.Count);
for (int i = 0; i < schema.Categories.Count; i++)
{
string featureName = schema.Categories[i].Name.ToLower();
// feature index
size += writer.Write((uint)featureIndex[featureName]);
// mean
size += writer.Write(schema.Categories[i].Mean);
// invStdDev
size += writer.Write(schema.Categories[i].InvStdDev);
// value count
size += writer.Write((uint)schema.Categories[i].Values.Count);
for (int k = 0; k < schema.Categories[i].Values.Count; k++)
{
string valueName = schema.Categories[i].Values[k].Name.ToLower();
string id = string.Empty;
if (phoneToIdIndexes.ContainsKey(valueName) && featureName.IndexOf("phoneidentity") >= 0)
{
id = phoneToIdIndexes[valueName];
}
else
{
id = valueName;
}
try
{
size += writer.Write(uint.Parse(id));
}
catch (System.FormatException)
{
continue;
}
}
}
Debug.Assert(size % sizeof(uint) == 0, "Data must be 4-byte aligned.");
return size;
}
/// <summary>
/// Write out linear transform.
/// </summary>
/// <param name="writer">Binary writer.</param>
/// <param name="linXform">Linear transform.</param>
/// <param name="streamOrder">The dynamic order of stream, to which the linear transform belongs.</param>
/// <param name="hasBias">Indicate transform whether has bias info.</param>
/// <param name="bandWidth">Band width of linear transform matrix.</param>
/// <returns>Size of bytes written.</returns>
protected virtual uint Write(DataWriter writer, LinXForm linXform, DynamicOrder streamOrder, bool hasBias, uint bandWidth)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(linXform);
uint size = 0;
Debug.Assert(Config.BiasBits == sizeof(float) * 8, "Only 32-bit float value is supported here");
Debug.Assert(Config.MatrixBits == sizeof(float) * 8, "Only 32-bit float value is supported here");
for (int i = 0; hasBias && i < linXform.VecSize; i++)
{
size += writer.Write(linXform.Bias[i]);
}
for (int i = 0; i < linXform.Blocks.Count; i++)
{
for (int j = 0; j < linXform.Blocks[i].GetLength(0); j++)
{
for (int k = 0; k < linXform.Blocks[i].GetLength(1); k++)
{
if (k >= j - bandWidth && k <= j + bandWidth)
{
size += writer.Write(linXform.Blocks[i][j, k]);
}
}
}
}
return size;
}
public void Save(string fontPath, HtsFontSerializer serializer, Dictionary<HmmModelType, int> xformBandWidths = null)
{
Helper.ThrowIfNull(fontPath);
Helper.ThrowIfNull(serializer);
Helper.EnsureFolderExistForFile(fontPath);
using (FileStream fontStream = new FileStream(fontPath, FileMode.Create))
{
using (DataWriter writer = new DataWriter(fontStream))
{
uint size = serializer.Write(this, writer, xformBandWidths);
Debug.Assert(size == fontStream.Length,
"Calculated size of byte written out should equal with stream size.");
}
}
}
/// <summary>
/// Write the decision forest and tree index.
/// </summary>
/// <param name="forest">The decision forest.</param>
/// <param name="treeIndexes">Tree indexes.</param>
/// <param name="questionIndexes">Question indexes.</param>
/// <param name="questionSet">The Question set.</param>
/// <param name="namedOffsets">The named Offsets.</param>
/// <param name="forestSerializer">The forest serializer.</param>
/// <param name="writer">The writer to write.</param>
/// <returns>The postion after write.</returns>
internal int Write(DecisionForest forest, List<TreeIndex> treeIndexes,
Dictionary<string, uint> questionIndexes, HtsQuestionSet questionSet,
IDictionary<string, uint[]> namedOffsets, DecisionForestSerializer forestSerializer, DataWriter writer)
{
Helper.ThrowIfNull(forest);
Helper.ThrowIfNull(treeIndexes);
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(questionIndexes);
Helper.ThrowIfNull(questionSet);
int decisionTreeSectionStart = (int)writer.BaseStream.Position;
int position = decisionTreeSectionStart;
// Write tree index (place holder)
position += (int)WriteTreeIndexes(writer, treeIndexes.ToArray());
// Write trees
for (int treeIndex = 0; treeIndex < forest.TreeList.Count; treeIndex++)
{
DecisionTree tree = forest.TreeList[treeIndex];
TreeIndex index = treeIndexes[treeIndex];
index.Offset = position - decisionTreeSectionStart;
index.Size = (int)forestSerializer.Write(tree, writer, questionIndexes, namedOffsets);
position += index.Size;
}
// Write tree index
using (PositionRecover recover =
new PositionRecover(writer, decisionTreeSectionStart, SeekOrigin.Begin))
{
WriteTreeIndexes(writer, treeIndexes.ToArray());
}
Debug.Assert(position % sizeof(uint) == 0, "Data should be 4-byte aligned.");
return position - decisionTreeSectionStart;
}
/// <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 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>
/// Write out Gaussian distribution.
/// </summary>
/// <param name="writer">Binary writer.</param>
/// <param name="gaussian">Gaussian.</param>
/// <param name="streamOrder">The dynamic order of stream, to which the Gaussian belongs.</param>
/// <returns>Size of bytes written.</returns>
protected virtual uint Write(DataWriter writer, Gaussian gaussian, DynamicOrder streamOrder)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(gaussian);
uint size = 0;
if (Config.HasWeight)
{
size += writer.Write((float)gaussian.Weight);
}
Debug.Assert(Config.MeanBits == sizeof(float) * 8, "Only 32-bit float value is supported here");
Debug.Assert(Config.VarianceBits == sizeof(float) * 8, "Only 32-bit float value is supported here");
for (int i = 0; Config.HasMean && i < gaussian.Length; i++)
{
Debug.Assert(Config.HasVariance, "Variance is needed to encode mean for runtime.");
double invVar = CalculateInvertedVariance(gaussian.Variance[i], DefaultVarianceFloor);
double mean = gaussian.Mean[i] * invVar;
size += writer.Write((float)mean);
}
for (int i = 0; Config.HasVariance && i < gaussian.Length; i++)
{
double invVar = CalculateInvertedVariance(gaussian.Variance[i], DefaultVarianceFloor);
size += writer.Write((float)invVar);
}
return size;
}
public virtual uint Write(DataWriter writer, Gaussian[] gaussians, DynamicOrder streamOrder)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(gaussians);
DataWriter orgWriter = writer;
MemoryStream gaussiansBuf = null;
if (EnableCompress)
{
gaussiansBuf = new MemoryStream();
writer = new DataWriter(gaussiansBuf);
}
uint size = 0;
for (int i = 0; i < gaussians.Length; i++)
{
Statistic.Put(gaussians[i], streamOrder);
size += WriteFourBytesAlignedGaussian(writer, gaussians[i], streamOrder);
}
if (EnableCompress)
{
size = orgWriter.Write(Encoder.Encode(gaussiansBuf.ToArray()));
if (size % sizeof(uint) != 0)
{
size += orgWriter.Write(new byte[sizeof(uint) - (size % sizeof(uint))]);
}
writer = orgWriter;
}
return size;
}
/// <summary>
/// Write out Gaussian.
/// </summary>
/// <param name="writer">Binary writer.</param>
/// <param name="gaussian">Gaussian.</param>
/// <param name="streamOrder">The dynamic order of stream, to which the Gaussian belongs.</param>
/// <returns>Size of bytes written.</returns>
protected override uint Write(DataWriter writer, Gaussian gaussian, DynamicOrder streamOrder)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(gaussian);
uint size = 0;
Gaussian quantized = gaussian;
if (IsNeedQuantize)
{
quantized = Quantize(gaussian, streamOrder);
QuantizedStatistic.Put(quantized, streamOrder);
}
Debug.Assert(Config.MeanBits == sizeof(short) * 8, "Only 16-bit short value is supported here");
for (int i = 0; Config.HasMean && i < gaussian.Length; i++)
{
size += writer.Write((short)quantized.Mean[i]);
}
Debug.Assert(Config.VarianceBits == sizeof(byte) * 8, "Only 8-bit byte value is supported here");
for (int i = 0; Config.HasVariance && i < gaussian.Length; i++)
{
size += writer.Write((byte)quantized.Variance[i]);
}
return size;
}
/// <summary>
/// Save pre-selection forest.
/// </summary>
/// <param name="decisionForest">The forest with each tree corresponding to a unit.</param>
/// <param name="candidateGroups">The candidate group collection.</param>
/// <param name="unitCandidateNameIds">Given candidate idx.</param>
/// <param name="customFeatures">Cusotmized linguistic feature list.</param>
/// <param name="outputPath">The output path.</param>
public void Write(DecisionForest decisionForest,
ICollection<CandidateGroup> candidateGroups,
IDictionary<string, int> unitCandidateNameIds,
HashSet<string> customFeatures,
string outputPath)
{
foreach (Question question in decisionForest.QuestionList)
{
question.Language = _phoneSet.Language;
question.ValueSetToCodeValueSet(_posSet, _phoneSet, customFeatures);
}
FileStream file = new FileStream(outputPath, FileMode.Create);
try
{
using (DataWriter writer = new DataWriter(file))
{
file = null;
uint position = 0;
// Write header section place holder
PreselectionFileHeader header = new PreselectionFileHeader();
position += (uint)header.Write(writer);
HtsFontSerializer serializer = new HtsFontSerializer();
// Write feature, question and prepare string pool
HtsQuestionSet questionSet = new HtsQuestionSet
{
Items = decisionForest.QuestionList,
Header = new HtsQuestionSetHeader { HasQuestionName = false },
CustomFeatures = customFeatures,
};
using (StringPool stringPool = new StringPool())
{
Dictionary<string, uint> questionIndexes = new Dictionary<string, uint>();
header.QuestionOffset = position;
header.QuestionSize = serializer.Write(
questionSet, writer, stringPool, questionIndexes, customFeatures);
position += header.QuestionSize;
// Write leaf referenced data to buffer
IEnumerable<INodeData> dataNodes = GetCandidateNodes(candidateGroups);
using (MemoryStream candidateSetBuffer = new MemoryStream())
{
Dictionary<string, int> namedSetOffset = new Dictionary<string, int>();
int candidateSetSize = HtsFontSerializer.Write(
dataNodes, new DataWriter(candidateSetBuffer), namedSetOffset);
// Write decision forest
Dictionary<string, uint[]> namedOffsets =
namedSetOffset.ToDictionary(p => p.Key, p => new[] { (uint)p.Value });
header.DecisionTreeSectionOffset = position;
header.DecisionTreeSectionSize = (uint)Write(decisionForest, unitCandidateNameIds,
questionIndexes, questionSet, namedOffsets, new DecisionForestSerializer(), writer);
position += header.DecisionTreeSectionSize;
// Write string pool
header.StringPoolOffset = position;
header.StringPoolSize = HtsFontSerializer.Write(stringPool, writer);
position += header.StringPoolSize;
// Write leaf referenced data
header.CandidateSetSectionOffset = position;
header.CandidateSetSectionSize = writer.Write(candidateSetBuffer.ToArray());
position += header.CandidateSetSectionSize;
}
// Write header section place holder
using (PositionRecover recover = new PositionRecover(writer, 0))
{
header.Write(writer);
}
}
}
}
finally
{
if (null != file)
{
file.Dispose();
}
}
}
/// <summary>
/// Write out one linear transform to be 4-byte aligned.
/// </summary>
/// <param name="writer">Binary writer.</param>
/// <param name="linXform">Linear transform to write out.</param>
/// <param name="streamOrder">Dynamic order of the stream of current linear transform.</param>
/// <param name="hasBias">Indicate transform whether has bias info.</param>
/// <param name="bandWidth">Band width of linear transform matrix.</param>
/// <returns>Number of bytes written out.</returns>
protected uint WriteFourBytesAlignedLinXform(DataWriter writer, LinXForm linXform, DynamicOrder streamOrder, bool hasBias, uint bandWidth = 0)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(linXform);
uint size = Write(writer, linXform, streamOrder, hasBias, bandWidth);
if (size == 0)
{
throw new InvalidDataException(Helper.NeutralFormat("Zero length of linXform is not allowed."));
}
// Pad zero bytes if needed to align with 4-bytes
if (size % sizeof(uint) > 0)
{
size += writer.Write(new byte[sizeof(uint) - (size % sizeof(uint))]);
}
Debug.Assert(size % sizeof(uint) == 0, "Data should be 4-byte aligned.");
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);
}
/// <summary>
/// Write out locations.
/// </summary>
/// <param name="locations">Locations to write.</param>
/// <param name="writer">Binary data writer.</param>
/// <returns>Size of bytes written.</returns>
private static uint Write(Location[] locations, DataWriter writer)
{
Helper.ThrowIfNull(locations);
Helper.ThrowIfNull(writer);
uint size = writer.Write(locations.Length);
for (int i = 0; i < locations.Length; i++)
{
size += writer.Write(locations[i].Offset);
size += writer.Write(locations[i].Length);
}
return size;
}
/// <summary>
/// Write out one Gaussian distribution to be 4-byte aligned.
/// </summary>
/// <param name="writer">Binary writer.</param>
/// <param name="gaussian">Gaussian distribution to write out.</param>
/// <param name="streamOrder">Dynamic order of the stream of current Gaussian distribution.</param>
/// <returns>Number of bytes written out.</returns>
protected uint WriteFourBytesAlignedGaussian(DataWriter writer, Gaussian gaussian, DynamicOrder streamOrder)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(gaussian);
uint size = Write(writer, gaussian, streamOrder);
if (size == 0)
{
throw new InvalidDataException(Helper.NeutralFormat("Zero length of Gaussian is not allowed."));
}
// Pad zero bytes if needed to align with 4-bytes
if (size % sizeof(uint) > 0)
{
size += writer.Write(new byte[sizeof(uint) - (size % sizeof(uint))]);
}
Debug.Assert(size % sizeof(uint) == 0, "Data should be 4-byte aligned.");
return size;
}
/// <summary>
/// Write out Gaussians of one stream.
/// </summary>
/// <param name="writer">Binary writer.</param>
/// <param name="gaussians">Gaussians.</param>
/// <param name="streamOrder">The dynamic order of stream, to which the Gaussian belongs.</param>
/// <returns>Size of bytes written.</returns>
public override uint Write(DataWriter writer, Gaussian[] gaussians, DynamicOrder streamOrder)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(gaussians);
if (gaussians.Count(g => g.Length > 0) != 1)
{
string message = string.Format(CultureInfo.InvariantCulture,
"Multi-space distribution with [{0}] non-zero-length mixtures is not supported",
gaussians.Count(g => g.Length > 0));
throw new InvalidDataException(message);
}
// Maximum dimension among Gaussian models in this stream
int maxDimension = gaussians.Max(g => g.Length);
uint size = 0;
Debug.Assert(gaussians.Count(g => g.Length == maxDimension) == 1,
"The number of meaningful MSD mixture number should be 1");
for (int i = 0; i < gaussians.Length; i++)
{
if (gaussians[i].Length == maxDimension)
{
Statistic.Put(gaussians[i], streamOrder);
size += WriteFourBytesAlignedGaussian(writer, gaussians[i], streamOrder);
}
}
return size;
}
/// <summary>
/// Write out Gaussian.
/// </summary>
/// <param name="writer">Binary writer.</param>
/// <param name="gaussian">Gaussian.</param>
/// <param name="streamOrder">The dynamic order of stream, to which the Gaussian belongs.</param>
/// <returns>Size of bytes written.</returns>
protected override uint Write(DataWriter writer, Gaussian gaussian, DynamicOrder streamOrder)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(gaussian);
uint size = 0;
Gaussian quantized = gaussian;
if (IsNeedQuantize)
{
quantized = Quantize(gaussian, streamOrder);
QuantizedStatistic.Put(quantized, streamOrder);
}
if (Config.HasWeight)
{
if (quantized.Weight == 0.0f)
{
throw new InvalidDataException(Helper.NeutralFormat("Zero weight of LogF0 is found."));
}
size += writer.Write((float)quantized.Weight);
}
Debug.Assert(Config.MeanBits == sizeof(short) * 8, "Only 16-bit short value is supported here");
for (int i = 0; Config.HasMean && i < gaussian.Length; i++)
{
size += writer.Write((short)quantized.Mean[i]);
}
Debug.Assert(Config.VarianceBits == sizeof(byte) * 8, "Only 8-bit byte value is supported here");
for (int i = 0; Config.HasVariance && i < gaussian.Length; i++)
{
size += writer.Write((byte)quantized.Variance[i]);
}
return size;
}
/// <summary>
/// Write the pst data.
/// </summary>
/// <param name="pstFile">The pst file name to be stored.</param>
/// <param name="data">The pst data to be write.</param>
/// <param name="ttsPhoneSet">The tts Phone set.</param>
/// <param name="ttsPosSet">The tts pst set.</param>
public void WritePSTData(string pstFile, PSTData data, TtsPhoneSet ttsPhoneSet, TtsPosSet ttsPosSet)
{
foreach (Question question in data.DecisionForest.QuestionList)
{
question.Language = ttsPhoneSet.Language;
question.ValueSetToCodeValueSet(ttsPosSet, ttsPhoneSet, data.CustomFeatures);
}
FileStream file = new FileStream(pstFile, FileMode.Create);
try
{
using (DataWriter writer = new DataWriter(file))
{
file = null;
uint position = 0;
// Write header section place holder
PreselectionFileHeader header = new PreselectionFileHeader();
position += (uint)header.Write(writer);
HtsFontSerializer serializer = new HtsFontSerializer();
using (StringPool stringPool = new StringPool())
{
Dictionary<string, uint> questionIndexes = new Dictionary<string, uint>();
header.QuestionOffset = position;
header.QuestionSize = serializer.Write(
data.QuestionSet, writer, stringPool, questionIndexes, data.CustomFeatures);
position += header.QuestionSize;
// Write leaf referenced data to buffer
List<CandidateSetData> dataNodes = data.CadidateSets;
int val = data.CadidateSets.Sum(c => c.Candidates.Count);
using (MemoryStream candidateSetBuffer = new MemoryStream())
{
Dictionary<string, int> namedSetOffset = new Dictionary<string, int>();
int candidateSetSize = HtsFontSerializer.Write(
dataNodes, new DataWriter(candidateSetBuffer), namedSetOffset);
// Write decision forest
Dictionary<string, uint[]> namedOffsets =
namedSetOffset.ToDictionary(p => p.Key, p => new[] { (uint)p.Value });
header.DecisionTreeSectionOffset = position;
header.DecisionTreeSectionSize = (uint)Write(data.DecisionForest, data.TreeIndexes,
questionIndexes, data.QuestionSet, namedOffsets, new DecisionForestSerializer(), writer);
position += header.DecisionTreeSectionSize;
// Write string pool
header.StringPoolOffset = position;
header.StringPoolSize = HtsFontSerializer.Write(stringPool, writer);
position += header.StringPoolSize;
// Write leaf referenced data
header.CandidateSetSectionOffset = position;
header.CandidateSetSectionSize = writer.Write(candidateSetBuffer.ToArray());
position += header.CandidateSetSectionSize;
}
// Write header section place holder
using (PositionRecover recover = new PositionRecover(writer, 0))
{
header.Write(writer);
}
}
}
}
finally
{
if (null != file)
{
file.Dispose();
}
}
}
/// <summary>
/// Write out Gaussian.
/// </summary>
/// <param name="writer">Binary writer.</param>
/// <param name="gaussian">Gaussian.</param>
/// <param name="streamOrder">The dynamic order of stream, to which the Gaussian belongs.</param>
/// <returns>Size of bytes written.</returns>
protected override uint Write(DataWriter writer, Gaussian gaussian, DynamicOrder streamOrder)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(gaussian);
uint size = 0;
Gaussian quantized = gaussian;
if (IsNeedQuantize)
{
quantized = Quantize(gaussian);
QuantizedStatistic.Put(quantized, streamOrder);
}
if (Config.HasWeight)
{
size += writer.Write((float)quantized.Weight);
}
if (!Config.HasMean || !Config.HasVariance)
{
throw new InvalidDataException("Needs both mean and variance.");
}
for (int i = 0; i < quantized.Length; i++)
{
if ((i + 1) % Config.StaticVectorSize == 0)
{
size += writer.Write((short)quantized.Mean[i]);
}
else if (i < Config.StaticVectorSize)
{
size += writer.Write((byte)quantized.Mean[i]);
}
else
{
size += writer.Write((sbyte)quantized.Mean[i]);
}
}
for (int i = 0; i < gaussian.Length; i++)
{
size += writer.Write((byte)quantized.Variance[i]);
}
return size;
}
/// <summary>
/// Write tree indexes.
/// </summary>
/// <param name="writer">The writer object.</param>
/// <param name="treeIndexes">The tree index array.</param>
/// <returns>Bytes written.</returns>
private uint WriteTreeIndexes(DataWriter writer, TreeIndex[] treeIndexes)
{
uint size = 0;
// Write tree count
size += writer.Write((uint)treeIndexes.Length);
foreach (TreeIndex index in treeIndexes)
{
size += writer.Write(index.Id);
size += writer.Write(index.Offset);
size += writer.Write(index.Size);
}
return size;
}
/// <summary>
/// Save feature set.
/// </summary>
/// <param name="writer">Binary data writer.</param>
/// <param name="stringPool">String pool.</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(DataWriter writer, StringPool stringPool,
Language language, string schemaFile, string outVarFile, Dictionary<string, string> phoneToIdIndexes)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(language);
Helper.ThrowIfNull(phoneToIdIndexes);
Helper.ThrowIfFileNotExist(schemaFile);
Helper.ThrowIfFileNotExist(outVarFile);
uint size = 0;
size += WriteSchema(language, schemaFile, phoneToIdIndexes, writer, stringPool);
size += WriteOutVariance(outVarFile, writer);
Debug.Assert(size % sizeof(uint) == 0, "Data must be 4-byte aligned.");
return size;
}
/// <summary>
/// Writes HTS font header into binary stream.
/// </summary>
/// <param name="writer">Binary writer.</param>
/// <returns>Size of bytes written.</returns>
public uint Write(DataWriter writer)
{
Helper.ThrowIfNull(writer);
byte[] buff = ToBytes();
uint size = writer.Write(buff);
#if SERIALIZATION_CHECKING
ConsistencyChecker.Check(this, Read(writer.BaseStream.Excerpt(size)));
#endif
return size;
}
public virtual uint Write(DataWriter writer, LinXForm meanXform, LinXForm varXform, DynamicOrder streamOrder)
{
Helper.ThrowIfNull(writer);
Helper.ThrowIfNull(meanXform);
Helper.ThrowIfNull(varXform);
DataWriter orgWriter = writer;
MemoryStream linXformsBuf = null;
if (EnableCompress)
{
linXformsBuf = new MemoryStream();
writer = new DataWriter(linXformsBuf);
}
uint size = 0;
if (Config.HasMeanXform)
{
MeanStatistic.Put(meanXform, streamOrder);
size += WriteFourBytesAlignedLinXform(writer, meanXform, streamOrder, Config.HasMeanBias, Config.MeanBandWidth);
}
if (Config.HasVarXform)
{
VarStatistic.Put(varXform, streamOrder);
size += WriteFourBytesAlignedLinXform(writer, varXform, streamOrder, Config.HasVarBias);
}
if (EnableCompress)
{
size = orgWriter.Write(Encoder.Encode(linXformsBuf.ToArray()));
if (size % sizeof(uint) != 0)
{
size += orgWriter.Write(new byte[sizeof(uint) - (size % sizeof(uint))]);
}
writer = orgWriter;
}
return size;
}
