public void ExpandComponents()
{
// We can't modify the fields collection as we are traversing it, save new fields
// to add after we complete expansion
List<Field> newFields = new List<Field>();
foreach (Field myField in fields)
{
List<FieldComponent> compsToExpand = null;
Field containingField = null;
// Determine the active subfield and expand if it has any components
ushort activeSubfield = GetActiveSubFieldIndex(myField.Num);
if (activeSubfield == Fit.SubfieldIndexMainField)
{
// There are main field components, expand
if (myField.components.Count > 0)
{
compsToExpand = myField.components;
containingField = myField;
}
}
else
{
// There are subfield components, expand
if (myField.GetSubfield(activeSubfield).Components.Count > 0)
{
compsToExpand = myField.GetSubfield(activeSubfield).Components;
containingField = myField;
}
}
if (compsToExpand != null)
{
// Comp Decode
if (containingField.values.Count > 0)
{
int offset = 0;
foreach (FieldComponent component in compsToExpand)
{
if (component.fieldNum != Fit.FieldNumInvalid)
{
Field destinationField = new Field(Profile.GetMesg(this.Num).GetField(component.fieldNum));
// GetBitsValue will not return more bits than the componentField type can hold.
// This means strings are built one letter at a time when using components
// which is a bad idea to start with)
long? bitsValue = containingField.GetBitsValue(offset, component.bits, destinationField.Type);
if (bitsValue == null)
{
break;
}
if (component.accumulate == true)
{
bitsValue = component.Accumulate(bitsValue.Value);
}
if (destinationField.IsNumeric())
{
float fbitsValue = Convert.ToSingle(bitsValue);
fbitsValue = ((float)fbitsValue / component.scale) - component.offset;
if (this.HasField(destinationField.Num) == true)
{
this.GetField(destinationField.Num).SetValue(this.GetField(destinationField.Num).values.Count, fbitsValue);
}
else
{
destinationField.SetValue(fbitsValue);
newFields.Add(destinationField);
}
}
// Shouldn't apply scale/offset to string or enum
else
{
object nonNumericBitsValue;
// Ensure strings are added as byte[]
if ((destinationField.Type & Fit.BaseTypeNumMask) == Fit.String)
{
nonNumericBitsValue = new byte[] { (byte)bitsValue };
}
else
{
nonNumericBitsValue = bitsValue;
}
if (this.HasField(destinationField.Num) == true)
{
this.GetField(destinationField.Num).SetValue(this.GetField(destinationField.Num).values.Count, nonNumericBitsValue);
}
else
{
destinationField.SetValue(nonNumericBitsValue);
newFields.Add(destinationField);
}
}
}
offset += component.bits;
}
}
}
}
foreach (Field newField in newFields)
{
// Another component added this field during expansion, append the additional values
if (this.HasField(newField.Num) == true)
{
foreach (object newValue in newField.values)
{
this.GetField(newField.Num).SetValue(this.GetField(newField.Num).values.Count, newValue);
}
}
// Add the new field
else
{
this.SetField(newField);
}
}
}
public void ExpandComponents()
{
// We can't modify the fields collection as we are traversing it, save new fields
// to add after we complete expansion
List <Field> newFields = new List <Field>();
foreach (Field myField in fields)
{
List <FieldComponent> compsToExpand = null;
Field containingField = null;
// Determine the active subfield and expand if it has any components
ushort activeSubfield = GetActiveSubFieldIndex(myField.Num);
if (activeSubfield == Fit.SubfieldIndexMainField)
{
// There are main field components, expand
if (myField.components.Count > 0)
{
compsToExpand = myField.components;
containingField = myField;
}
}
else
{
// There are subfield components, expand
if (myField.GetSubfield(activeSubfield).Components.Count > 0)
{
compsToExpand = myField.GetSubfield(activeSubfield).Components;
containingField = myField;
}
}
if (compsToExpand != null)
{
// Comp Decode
if (containingField.values.Count > 0)
{
int offset = 0;
foreach (FieldComponent component in compsToExpand)
{
if (component.fieldNum != Fit.FieldNumInvalid)
{
Field destinationField = new Field(Profile.GetMesg(this.Num).GetField(component.fieldNum));
// GetBitsValue will not return more bits than the componentField type can hold.
// This means strings are built one letter at a time when using components
// which is a bad idea to start with)
long?bitsValue = containingField.GetBitsValue(offset, component.bits, destinationField.Type);
if (bitsValue == null)
{
break;
}
if (component.accumulate == true)
{
bitsValue = component.Accumulate(bitsValue.Value);
}
if (destinationField.IsNumeric())
{
float fbitsValue = Convert.ToSingle(bitsValue);
fbitsValue = ((float)fbitsValue / component.scale) - component.offset;
if (this.HasField(destinationField.Num) == true)
{
this.GetField(destinationField.Num).SetValue(this.GetField(destinationField.Num).values.Count, fbitsValue);
}
else
{
destinationField.SetValue(fbitsValue);
newFields.Add(destinationField);
}
}
// Shouldn't apply scale/offset to string or enum
else
{
object nonNumericBitsValue;
// Ensure strings are added as byte[]
if ((destinationField.Type & Fit.BaseTypeNumMask) == Fit.String)
{
nonNumericBitsValue = new byte[] { (byte)bitsValue };
}
else
{
nonNumericBitsValue = bitsValue;
}
if (this.HasField(destinationField.Num) == true)
{
this.GetField(destinationField.Num).SetValue(this.GetField(destinationField.Num).values.Count, nonNumericBitsValue);
}
else
{
destinationField.SetValue(nonNumericBitsValue);
newFields.Add(destinationField);
}
}
}
offset += component.bits;
}
}
}
}
foreach (Field newField in newFields)
{
// Another component added this field during expansion, append the additional values
if (this.HasField(newField.Num) == true)
{
foreach (object newValue in newField.values)
{
this.GetField(newField.Num).SetValue(this.GetField(newField.Num).values.Count, newValue);
}
}
// Add the new field
else
{
this.SetField(newField);
}
}
}
public void DecodeNextMessage(Stream fitStream)
{
BinaryReader br = new BinaryReader(fitStream);
byte nextByte = br.ReadByte();
// Is it a compressed timestamp mesg?
if ((nextByte & Fit.CompressedHeaderMask) == Fit.CompressedHeaderMask)
{
MemoryStream mesgBuffer = new MemoryStream();
int timeOffset = nextByte & Fit.CompressedTimeMask;
timestamp += (uint)((timeOffset - lastTimeOffset) & Fit.CompressedTimeMask);
lastTimeOffset = timeOffset;
Field timestampField = new Field(Profile.mesgs[Profile.RecordIndex].GetField("Timestamp"));
timestampField.SetValue(timestamp);
byte localMesgNum = (byte)((nextByte & Fit.CompressedLocalMesgNumMask) >> 5);
mesgBuffer.WriteByte(localMesgNum);
if (localMesgDefs[localMesgNum] == null)
{
throw new FitException("Decode:DecodeNextMessage - FIT decode error: Missing message definition for local message number " + localMesgNum + ".");
}
int fieldsSize = localMesgDefs[localMesgNum].GetMesgSize() - 1;
try
{
mesgBuffer.Write(br.ReadBytes(fieldsSize), 0, fieldsSize);
}
catch (IOException e)
{
throw new FitException("Decode:DecodeNextMessage - Compressed Data Message unexpected end of file. Wanted " + fieldsSize + " bytes at stream position " + fitStream.Position, e);
}
Mesg newMesg = new Mesg(mesgBuffer, localMesgDefs[localMesgNum]);
newMesg.InsertField(0, timestampField);
if (MesgEvent != null)
{
MesgEvent(this, new MesgEventArgs(newMesg));
}
}
// Is it a mesg def?
else if ((nextByte & Fit.HeaderTypeMask) == Fit.MesgDefinitionMask)
{
MemoryStream mesgDefBuffer = new MemoryStream();
// Figure out number of fields (length) of our defn and build buffer
mesgDefBuffer.WriteByte(nextByte);
mesgDefBuffer.Write(br.ReadBytes(4), 0, 4);
byte numfields = br.ReadByte();
mesgDefBuffer.WriteByte(numfields);
try
{
mesgDefBuffer.Write(br.ReadBytes(numfields * 3), 0, numfields * 3);
}
catch (IOException e)
{
throw new FitException("Decode:DecodeNextMessage - Defn Message unexpected end of file. Wanted " + (numfields * 3) + " bytes at stream position " + fitStream.Position, e);
}
MesgDefinition newMesgDef = new MesgDefinition(mesgDefBuffer);
localMesgDefs[newMesgDef.LocalMesgNum] = newMesgDef;
if (MesgDefinitionEvent != null)
{
MesgDefinitionEvent(this, new MesgDefinitionEventArgs(newMesgDef));
}
}
// Is it a data mesg?
else if ((nextByte & Fit.HeaderTypeMask) == Fit.MesgHeaderMask)
{
MemoryStream mesgBuffer = new MemoryStream();
byte localMesgNum = (byte)(nextByte & Fit.LocalMesgNumMask);
mesgBuffer.WriteByte(localMesgNum);
if (localMesgDefs[localMesgNum] == null)
{
throw new FitException("Decode:DecodeNextMessage - FIT decode error: Missing message definition for local message number " + localMesgNum + ".");
}
int fieldsSize = localMesgDefs[localMesgNum].GetMesgSize() - 1;
try
{
mesgBuffer.Write(br.ReadBytes(fieldsSize), 0, fieldsSize);
}
catch (Exception e)
{
throw new FitException("Decode:DecodeNextMessage - Data Message unexpected end of file. Wanted " + fieldsSize + " bytes at stream position " + fitStream.Position, e);
}
Mesg newMesg = new Mesg(mesgBuffer, localMesgDefs[localMesgNum]);
// If the new message contains a timestamp field, record the value to use as
// a reference for compressed timestamp headers
Field timestampField = newMesg.GetField("Timestamp");
if (timestampField != null)
{
timestamp = (uint)timestampField.GetValue();
lastTimeOffset = (int)timestamp & Fit.CompressedTimeMask;
}
// Now that the entire message is decoded we can evaluate subfields and expand any components
newMesg.ExpandComponents();
if (MesgEvent != null)
{
MesgEvent(this, new MesgEventArgs(newMesg));
}
}
else
{
throw new FitException("Decode:Read - FIT decode error: Unexpected Record Header Byte 0x" + nextByte.ToString("X"));
}
}
public void DecodeNextMessage(Stream fitStream)
{
BinaryReader br = new BinaryReader(fitStream);
byte nextByte = br.ReadByte();
// Is it a compressed timestamp mesg?
if ((nextByte & Fit.CompressedHeaderMask) == Fit.CompressedHeaderMask)
{
MemoryStream mesgBuffer = new MemoryStream();
int timeOffset = nextByte & Fit.CompressedTimeMask;
timestamp += (uint)((timeOffset - lastTimeOffset) & Fit.CompressedTimeMask);
lastTimeOffset = timeOffset;
Field timestampField = new Field(Profile.mesgs[Profile.RecordIndex].GetField("Timestamp"));
timestampField.SetValue(timestamp);
byte localMesgNum = (byte)((nextByte & Fit.CompressedLocalMesgNumMask) >> 5);
mesgBuffer.WriteByte(localMesgNum);
if (localMesgDefs[localMesgNum] == null)
{
throw new FitException("Decode:DecodeNextMessage - FIT decode error: Missing message definition for local message number " + localMesgNum + ".");
}
int fieldsSize = localMesgDefs[localMesgNum].GetMesgSize() - 1;
try
{
mesgBuffer.Write(br.ReadBytes(fieldsSize), 0, fieldsSize);
}
catch (IOException e)
{
throw new FitException("Decode:DecodeNextMessage - Compressed Data Message unexpected end of file. Wanted " + fieldsSize + " bytes at stream position " + fitStream.Position, e);
}
Mesg newMesg = new Mesg(mesgBuffer, localMesgDefs[localMesgNum]);
newMesg.InsertField(0, timestampField);
if (MesgEvent != null)
{
MesgEvent(this, new MesgEventArgs(newMesg));
}
}
// Is it a mesg def?
else if ((nextByte & Fit.HeaderTypeMask) == Fit.MesgDefinitionMask)
{
MemoryStream mesgDefBuffer = new MemoryStream();
// Figure out number of fields (length) of our defn and build buffer
mesgDefBuffer.WriteByte(nextByte);
mesgDefBuffer.Write(br.ReadBytes(4), 0, 4);
byte numfields = br.ReadByte();
mesgDefBuffer.WriteByte(numfields);
try
{
mesgDefBuffer.Write(br.ReadBytes(numfields * 3), 0, numfields * 3);
}
catch (IOException e)
{
throw new FitException("Decode:DecodeNextMessage - Defn Message unexpected end of file. Wanted " + (numfields * 3) + " bytes at stream position " + fitStream.Position, e);
}
MesgDefinition newMesgDef = new MesgDefinition(mesgDefBuffer);
localMesgDefs[newMesgDef.LocalMesgNum] = newMesgDef;
if (MesgDefinitionEvent != null)
{
MesgDefinitionEvent(this, new MesgDefinitionEventArgs(newMesgDef));
}
}
// Is it a data mesg?
else if ((nextByte & Fit.HeaderTypeMask) == Fit.MesgHeaderMask)
{
MemoryStream mesgBuffer = new MemoryStream();
byte localMesgNum = (byte)(nextByte & Fit.LocalMesgNumMask);
mesgBuffer.WriteByte(localMesgNum);
if (localMesgDefs[localMesgNum] == null)
{
throw new FitException("Decode:DecodeNextMessage - FIT decode error: Missing message definition for local message number " + localMesgNum + ".");
}
int fieldsSize = localMesgDefs[localMesgNum].GetMesgSize() - 1;
try
{
mesgBuffer.Write(br.ReadBytes(fieldsSize), 0, fieldsSize);
}
catch (Exception e)
{
throw new FitException("Decode:DecodeNextMessage - Data Message unexpected end of file. Wanted " + fieldsSize + " bytes at stream position " + fitStream.Position, e);
}
Mesg newMesg = new Mesg(mesgBuffer, localMesgDefs[localMesgNum]);
// If the new message contains a timestamp field, record the value to use as
// a reference for compressed timestamp headers
Field timestampField = newMesg.GetField("Timestamp");
if (timestampField != null)
{
timestamp = (uint)timestampField.GetValue();
lastTimeOffset = (int)timestamp & Fit.CompressedTimeMask;
}
// Now that the entire message is decoded we can evaluate subfields and expand any components
newMesg.ExpandComponents();
if (MesgEvent != null)
{
MesgEvent(this, new MesgEventArgs(newMesg));
}
}
else
{
throw new FitException("Decode:Read - FIT decode error: Unexpected Record Header Byte 0x" + nextByte.ToString("X"));
}
}
