private C3DFile(Stream stream)
{
C3DReader reader = null;
try
{
reader = new C3DReader(stream);
this._processorType = reader.CreateProcessorType;
this._header = reader.ReadHeader();
this._parameterDictionary = reader.ReadParameters();
this._frameCollection = new C3DFrameCollection();
try
{
C3DParameterCache paramCache = C3DParameterCache.CreateCache(this);
C3DFrame frame = null;
while ((frame = reader.ReadNextFrame(paramCache)) != null)
{
this._frameCollection.Add(frame);
}
}
catch { }
}
finally
{
if (reader != null)
{
reader.Close();
}
}
}
private C3DFile()
{
this._processorType = C3DConstants.FILE_DEFAULT_PROCESSOR_TYPE;
this._header = new C3DHeader();
this._parameterDictionary = C3DParameterDictionary.CreateNewParameterDictionary();
this._frameCollection = new C3DFrameCollection();
}
/// <summary>
/// 从已有参数组列表里创建C3D参数组字典
/// </summary>
/// <param name="groups">C3D参数组字典</param>
/// <param name="parameters">C3D参数项字典</param>
/// <returns>C3D参数组字典</returns>
internal static C3DParameterDictionary CreateParameterDictionaryFromParameterList(IDictionary <Int32, C3DParameterGroup> groups, IDictionary <Int32, List <C3DParameter> > parameters)
{
C3DParameterDictionary dict = new C3DParameterDictionary();
if (groups == null || groups.Count <= 0)
{
return(dict);
}
foreach (KeyValuePair <Int32, C3DParameterGroup> pair in groups)
{
C3DParameterGroup group = pair.Value;
List <C3DParameter> groupParameters = null;
if (group != null && group.ID < 0)
{
if (parameters.TryGetValue(-group.ID, out groupParameters) && groupParameters != null)
{
for (Int32 i = 0; i < groupParameters.Count; i++)
{
group[groupParameters[i].Name] = groupParameters[i];
}
}
dict._paramGroups[-group.ID] = group;
}
}
return(dict);
}
private void WriteParameters(Byte firstParameterBlockIndex, C3DParameterDictionary dictionary)
{
Int32 startPosition = (firstParameterBlockIndex - 1) * C3DConstants.FILE_SECTION_SIZE;
this._writer.Seek(startPosition, SeekOrigin.Begin);
this._writer.Write(C3DConstants.FILEPARAMETER_FIRST_PARAM_BLOCK);
this._writer.Write(C3DConstants.FILEPARAMETER_SIGNATURE);
this._writer.Write((Byte)0);
this._writer.Write((Byte)C3DConstants.FILE_DEFAULT_PROCESSOR_TYPE);
foreach (C3DParameterGroup group in dictionary)
{
if (group.ID < 0)
{
this.WriteParameter(null, group, false);
foreach (C3DParameter param in group)
{
this.WriteParameter(group, param, false);
}
}
}
C3DParameterGroup lastGroup = new C3DParameterGroup(0, "", "");
this.WriteParameter(null, lastGroup, true);
this._newDataStartBlockIndex = (UInt16)((this._writer.BaseStream.Position + C3DConstants.FILE_SECTION_SIZE) / C3DConstants.FILE_SECTION_SIZE + 1);
this._writer.Write(new Byte[(this._newDataStartBlockIndex - 1) * C3DConstants.FILE_SECTION_SIZE - this._writer.BaseStream.Position]);
this._writer.Seek(startPosition + 2, SeekOrigin.Begin);
this._writer.Write((Byte)(this._newDataStartBlockIndex - 2));
}
private void LoadAnalogGeneralScale(C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("ANALOG", "GEN_SCALE"))
{
this._analogGeneralScale = Convert.ToSingle(dictionary["ANALOG", "GEN_SCALE"].GetData(0));
}
else
{
this._analogGeneralScale = C3DConstants.DEFAULT_ANALOG_GEN_SCALE;
}
}
private void LoadAnalogChannelScale(C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("ANALOG", "SCALE"))
{
this._analogChannelScale = this.LoadFromArray <Single>(dictionary["ANALOG", "SCALE"], this._analogChannelCount);
}
else
{
this._analogChannelScale = null;
}
}
private void LoadAnalogZeroOffset(C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("ANALOG", "OFFSET"))
{
this._analogZeroOffset = this.LoadFromArray <Int16>(dictionary["ANALOG", "OFFSET"], this._analogChannelCount);
}
else
{
this._analogZeroOffset = null;
}
}
public C3DParameterDictionary ReadParameters()
{
Dictionary <Int32, C3DParameterGroup> groups = new Dictionary <Int32, C3DParameterGroup>();
Dictionary <Int32, List <C3DParameter> > parameters = new Dictionary <Int32, List <C3DParameter> >();
Int32 startPosition = (this._firstParameterBlockIndex - 1) * C3DConstants.FILE_SECTION_SIZE;
this._reader.BaseStream.Seek(startPosition + 2, SeekOrigin.Begin);
Byte paramsBlocksCount = this._reader.ReadByte();
Byte processorType = this._reader.ReadByte();
Int64 endPosition = startPosition + paramsBlocksCount * C3DConstants.FILE_SECTION_SIZE;
Int16 nextPosition = 0;
do
{
SByte nameLength = this._reader.ReadSByte();//Byte 1
Boolean isLocked = nameLength < 0;
nameLength = Math.Abs(nameLength);
SByte id = this._reader.ReadSByte(); //Byte 2
Byte[] name = this._reader.ReadBytes(nameLength); //Byte 3
nextPosition = this._reader.ReadInt16(); //Byte 3 + n
Byte[] lastData = (nextPosition > 0 ? this._reader.ReadBytes(nextPosition - 2) : null);
if (id > 0)//C3DParameter
{
C3DParameter parameter = new C3DParameter(this._processorType, id, name, isLocked, lastData);
List <C3DParameter> list = null;
if (!parameters.TryGetValue(parameter.ID, out list))
{
list = new List <C3DParameter>();
}
list.Add(parameter);
parameters[parameter.ID] = list;
}
else//C3DParameterGroup
{
C3DParameterGroup group = new C3DParameterGroup(id, name, isLocked, lastData);
groups[-group.ID] = group;
}
}while (nextPosition > 0 && this._reader.BaseStream.Position < endPosition);
return(C3DParameterDictionary.CreateParameterDictionaryFromParameterList(groups, parameters));
}
private void LoadPointCount(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("POINT", "USED"))
{
this._pointCount = (UInt16)Convert.ToInt16(dictionary["POINT", "USED"].GetData(0));
}
else if (header != null)
{
this._pointCount = header.PointCount;
}
else
{
this._pointCount = C3DConstants.DEFAULT_POINT_USED;
}
}
private void LoadScaleFactor(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("POINT", "SCALE"))
{
this._scaleFactor = Convert.ToSingle(dictionary["POINT", "SCALE"].GetData(0));
}
else if (header != null)
{
this._scaleFactor = header.ScaleFactor;
}
else
{
this._scaleFactor = C3DConstants.DEFAULT_POINT_SCALE;
}
}
private void LoadAnalogSamplesPerFrame(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("ANALOG", "RATE"))
{
this._analogSamplesPerFrame = (UInt16)(Convert.ToSingle(dictionary["ANALOG", "RATE"].GetData(0)) / this._frameRate);
}
else if (header != null)
{
this._analogSamplesPerFrame = header.AnalogSamplesPerFrame;
}
else
{
this._analogSamplesPerFrame = (UInt16)(C3DConstants.DEFAULT_ANALOG_RATE / C3DConstants.DEFAULT_POINT_RATE);
}
}
private void LoadAnalogChannelCount(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("ANALOG", "USED"))
{
this._analogChannelCount = (UInt16)Convert.ToInt16(dictionary["ANALOG", "USED"].GetData(0));
}
else if (header != null)
{
this._analogChannelCount = (UInt16)(header.AnalogSamplesPerFrame != 0 ? header.AnalogMeasurementCount / header.AnalogSamplesPerFrame : 0);
}
else
{
this._analogChannelCount = C3DConstants.DEFAULT_ANALOG_USED;
}
}
private void LoadFrameRate(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("POINT", "RATE"))
{
this._frameRate = Convert.ToSingle(dictionary["POINT", "RATE"].GetData(0));
}
else if (header != null)
{
this._frameRate = header.FrameRate;
}
else
{
this._frameRate = C3DConstants.DEFAULT_POINT_RATE;
}
}
private void LoadFrameCount(C3DHeader header, C3DParameterDictionary dictionary)
{
if (dictionary != null && dictionary.ContainsParameter("POINT", "FRAMES"))
{
this._frameCount = (UInt16)Convert.ToInt16(dictionary["POINT", "FRAMES"].GetData(0));
}
else if (header != null)
{
this._frameCount = (UInt16)(header.LastFrameIndex - header.FirstFrameIndex + 1);
}
else
{
this._frameCount = C3DConstants.DEFAULT_POINT_LAST_FRAME - C3DConstants.DEFAULT_POINT_FIRST_FRAME + 1;
}
}
/// <summary>
/// 初始化取参数缓存信息
/// </summary>
/// <param name="header">C3D文件头</param>
/// <param name="dictionary">C3D参数字典</param>
private C3DParameterCache(C3DHeader header, C3DParameterDictionary dictionary)
{
this.LoadFirstDataBlockPosition(header, dictionary);
this.LoadPointCount(header, dictionary);
this.LoadScaleFactor(header, dictionary);
this.LoadFrameCount(header, dictionary);
this.LoadFrameRate(header, dictionary);
this.LoadAnalogChannelCount(header, dictionary);
this.LoadAnalogSamplesPerFrame(header, dictionary);
this.LoadAnalogGeneralScale(dictionary);
this.LoadAnalogChannelScale(dictionary);
this.LoadAnalogZeroOffset(dictionary);
}
private void LoadFirstDataBlockPosition(C3DHeader header, C3DParameterDictionary dictionary)
{
this._firstDataBlockPosition = 0;
if (dictionary != null && dictionary.ContainsParameter("POINT", "DATA_START"))
{
this._firstDataBlockPosition = ((UInt16)Convert.ToInt16(dictionary["POINT", "DATA_START"].GetData(0)) - 1) * C3DConstants.FILE_SECTION_SIZE;
}
if (header != null && this._firstDataBlockPosition <= 0)
{
this._firstDataBlockPosition = (header.FirstDataSectionID - 1) * C3DConstants.FILE_SECTION_SIZE;
}
if (this._firstDataBlockPosition <= 0)
{
this._firstDataBlockPosition = (C3DConstants.FILE_DEFAULT_FIRST_PARAM_SECTION - 1) * C3DConstants.FILE_SECTION_SIZE;
}
}
/// <summary>
/// 创建新的C3D参数组字典
/// </summary>
/// <returns>C3D参数组字典</returns>
public static C3DParameterDictionary CreateNewParameterDictionary()
{
C3DParameterDictionary dict = new C3DParameterDictionary();
C3DParameterGroup groupPoint = dict.SetGroup(1, "POINT", "");
groupPoint.Add <UInt16>("USED", "", C3DConstants.DEFAULT_POINT_USED);
groupPoint.Add <Single>("SCALE", "", C3DConstants.DEFAULT_POINT_SCALE);
groupPoint.Add <Single>("RATE", "", C3DConstants.DEFAULT_POINT_RATE);
groupPoint.Add <UInt16>("DATA_START", "", C3DConstants.FILE_DEFAULT_FIRST_PARAM_SECTION);
groupPoint.Add <UInt16>("FRAMES", "", C3DConstants.DEFAULT_POINT_LAST_FRAME - C3DConstants.DEFAULT_POINT_FIRST_FRAME + 1);
C3DParameterGroup groupAnalog = dict.SetGroup(2, "ANALOG", "");
groupAnalog.Add <UInt16>("USED", "", C3DConstants.DEFAULT_ANALOG_USED);
groupAnalog.Add <Single>("RATE", "", C3DConstants.DEFAULT_ANALOG_RATE);
C3DParameterGroup groupForcePlatform = dict.SetGroup(3, "FORCE_PLATFORM", "");
return(dict);
}
/// <summary>
/// 从C3D文件头和参数字典中创建参数缓存
/// </summary>
/// <param name="header">C3D文件头</param>
/// <param name="dictionary">C3D参数字典</param>
public static C3DParameterCache CreateCache(C3DHeader header, C3DParameterDictionary dictionary)
{
return(new C3DParameterCache(header, dictionary));
}
/// <summary>
/// 从C3D参数字典中创建参数缓存
/// </summary>
/// <param name="dictionary">C3D参数字典</param>
public static C3DParameterCache CreateCache(C3DParameterDictionary dictionary)
{
return(new C3DParameterCache(null, dictionary));
}
public C3DFrame ReadNextFrame(C3DParameterDictionary dictionary)
{
return(this.ReadNextFrame(C3DParameterCache.CreateCache(dictionary)));
}