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fitFileWriter.cs
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fitFileWriter.cs
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using System.Globalization;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace myFit
{
public class statistics
{
public Int32 start_position_lat;
public Int32 start_position_long;
public UInt32 total_elapsed_time;
public UInt32 total_timer_time;
public UInt32 total_distance;
public UInt16 total_calories;
public UInt16 avg_speed;
public UInt16 max_speed;
public UInt16 avg_power;
public UInt16 max_power;
public byte avg_heart_rate;
public byte max_heart_rate;
public byte avg_cadence;
public byte max_cadence;
public UInt32 timestamp = 0;
public UInt32 distance;
public UInt16 speed = 0;
public UInt16 power = 0;
public UInt16 altitude = 0;
public byte heart_rate = 0;
public byte cadence = 0;
UInt16 lastAltitude = 0xFFFF;
UInt32 lastTimestamp = 0;
UInt32 lastTravelCM = 0;
public UInt16 SessionTotal_ascent;
public UInt16 SessionTotal_descent;
public UInt32 SessionStartTimestamp = 0XFFFFFFFF;
UInt32 SessionTravelTotSeconds = 0;
UInt32 SessionTravelStartTimestamp = 0;
UInt32 SessionTravelTotcm = 0;
UInt32 SessionTravelStartCM = 0;
UInt32 SessionPowerTot = 0;
UInt32 SessionPowerTotSeconds = 0;
UInt32 SessionPowerStartTimestamp = 0;
UInt32 SessionHeart_rateTot = 0;
UInt32 SessionHeart_rateTotSeconds = 0;
UInt32 SessionHeart_rateStartTimestamp = 0;
UInt32 SessionCadenceTot = 0;
UInt32 SessionCadenceTotSeconds = 0;
UInt32 SessionCadenceStartTimestamp = 0;
bool SessionEnd = false;
public UInt16 LapTotal_ascent;
public UInt16 LapTotal_descent;
public UInt32 LapStartTimestamp = 0XFFFFFFFF;
UInt32 LapTravelTotSeconds = 0;
UInt32 LapTravelStartTimestamp = 0;
UInt32 LapTravelTotcm = 0;
UInt32 LapTravelStartCM = 0;
UInt32 LapPowerTot = 0;
UInt32 LapPowerTotSeconds = 0;
UInt32 LapPowerStartTimestamp = 0;
UInt32 LapHeart_rateTot = 0;
UInt32 LapHeart_rateTotSeconds = 0;
UInt32 LapHeart_rateStartTimestamp = 0;
UInt32 LapCadenceTot = 0;
UInt32 LapCadenceTotSeconds = 0;
UInt32 LapCadenceStartTimestamp = 0;
bool LapEnd = false;
public void calcSession()
{
SessionEnd = true;
update();
SessionEnd = false;
total_elapsed_time = (UInt32)((timestamp - SessionStartTimestamp) * 1000);
total_timer_time = (UInt32)(SessionTravelTotSeconds * 1000);
total_distance = distance;
total_calories = (UInt16)(SessionPowerTot / 1000.0 * 1.1 + 0.1);
avg_speed = (UInt16)((SessionTravelTotcm * 10.0) / (SessionTravelTotSeconds));
avg_power = SessionPowerTotSeconds == 0 ? (UInt16)0xFFFF : (UInt16)(SessionPowerTot / SessionPowerTotSeconds);
avg_heart_rate = SessionHeart_rateTotSeconds == 0 ? (byte)0xFF : (byte)(SessionHeart_rateTot / SessionHeart_rateTotSeconds);
avg_cadence = SessionCadenceTotSeconds == 0 ? (byte)0xFF : (byte)(SessionCadenceTot / SessionCadenceTotSeconds);
}
public void resetSession()
{
SessionTotal_ascent = 0;
SessionTotal_descent = 0;
SessionStartTimestamp = 0xFFFFFFFF;
SessionTravelTotSeconds = 0;
SessionTravelStartTimestamp = 0;
SessionTravelTotcm = 0;
SessionTravelStartCM = 0;
SessionPowerTot = 0;
SessionPowerTotSeconds = 0;
SessionPowerStartTimestamp = 0;
SessionHeart_rateTot = 0;
SessionHeart_rateTotSeconds = 0;
SessionHeart_rateStartTimestamp = 0;
SessionCadenceTot = 0;
SessionCadenceTotSeconds = 0;
SessionCadenceStartTimestamp = 0;
}
public void calcLap()
{
LapEnd = true;
update();
LapEnd = false;
total_elapsed_time = (UInt32)((timestamp - LapStartTimestamp) * 1000);
total_timer_time = (UInt32)(LapTravelTotSeconds * 1000);
total_distance = LapTravelTotcm;
total_calories = (UInt16)(LapPowerTot / 1000.0 * 1.1 + 0.1);
avg_speed = (UInt16)((LapTravelTotcm * 10.0) / (LapTravelTotSeconds));
avg_power = LapPowerTotSeconds == 0 ? (UInt16)0xFFFF : (UInt16)(LapPowerTot / LapPowerTotSeconds);
avg_heart_rate = LapHeart_rateTotSeconds == 0 ? (byte)0xFF : (byte)(LapHeart_rateTot / LapHeart_rateTotSeconds);
avg_cadence = LapCadenceTotSeconds == 0 ? (byte)0xFF : (byte)(LapCadenceTot / LapCadenceTotSeconds);
}
public void resetLap()
{
LapTotal_ascent = 0;
LapTotal_descent = 0;
LapStartTimestamp = 0xFFFFFFFF;
LapTravelTotSeconds = 0;
LapTravelStartTimestamp = 0;
LapTravelTotcm = 0;
LapTravelStartCM = 0;
LapPowerTot = 0;
LapPowerTotSeconds = 0;
LapPowerStartTimestamp = 0;
LapHeart_rateTot = 0;
LapHeart_rateTotSeconds = 0;
LapHeart_rateStartTimestamp = 0;
LapCadenceTot = 0;
LapCadenceTotSeconds = 0;
LapCadenceStartTimestamp = 0;
}
public void update()
{
if (SessionStartTimestamp == 0xFFFFFFFF) SessionStartTimestamp = timestamp;
if (LapStartTimestamp == 0xFFFFFFFF) LapStartTimestamp = timestamp;
if (lastAltitude == 0xFFFF) lastAltitude = altitude;
if (altitude - lastAltitude > 0)
{
SessionTotal_ascent += (UInt16)(altitude - lastAltitude);
LapTotal_ascent += (UInt16)(altitude - lastAltitude);
}
if (lastAltitude - altitude > 0)
{
SessionTotal_descent += (UInt16)(lastAltitude - altitude);
LapTotal_descent += (UInt16)(lastAltitude - altitude);
}
if (speed > 0 && !LapEnd && !SessionEnd)
{
if (speed > max_speed) max_speed = speed;
if (SessionTravelStartCM == 0)
{
SessionTravelStartTimestamp = timestamp;
SessionTravelStartCM = distance;
}
if (LapTravelStartCM == 0)
{
LapTravelStartTimestamp = timestamp;
LapTravelStartCM = distance;
}
}
else
{
if (SessionTravelStartCM != 0)
{
SessionTravelTotSeconds += lastTimestamp - SessionTravelStartTimestamp;
SessionTravelTotcm += lastTravelCM - SessionTravelStartCM;
SessionTravelStartTimestamp = 0;
SessionTravelStartCM = 0;
}
if (LapTravelStartCM != 0)
{
LapTravelTotSeconds += lastTimestamp - LapTravelStartTimestamp;
LapTravelTotcm += lastTravelCM - LapTravelStartCM;
LapTravelStartTimestamp = 0;
LapTravelStartCM = 0;
}
}
if (power > 0 && !LapEnd && !SessionEnd)
{
if (power > max_power) max_power = power;
SessionPowerTot += power;
if (SessionPowerStartTimestamp == 0)
SessionPowerStartTimestamp = timestamp;
LapPowerTot += power;
if (LapPowerStartTimestamp == 0)
LapPowerStartTimestamp = timestamp;
}
else
{
if (SessionPowerStartTimestamp != 0)
{
SessionPowerTotSeconds += lastTimestamp - SessionPowerStartTimestamp;
SessionPowerStartTimestamp = 0;
}
if (LapPowerStartTimestamp != 0)
{
LapPowerTotSeconds += lastTimestamp - LapPowerStartTimestamp;
LapPowerStartTimestamp = 0;
}
}
if (heart_rate > 0 && !LapEnd && !SessionEnd)
{
if (heart_rate > max_heart_rate) max_heart_rate = heart_rate;
SessionHeart_rateTot += heart_rate;
if (SessionHeart_rateStartTimestamp == 0)
SessionHeart_rateStartTimestamp = timestamp;
LapHeart_rateTot += heart_rate;
if (SessionHeart_rateStartTimestamp == 0)
SessionHeart_rateStartTimestamp = timestamp;
}
else
{
if (SessionHeart_rateStartTimestamp != 0)
{
SessionHeart_rateTotSeconds += lastTimestamp - SessionHeart_rateStartTimestamp;
SessionHeart_rateStartTimestamp = 0;
}
if (LapHeart_rateStartTimestamp != 0)
{
LapHeart_rateTotSeconds += lastTimestamp - LapHeart_rateStartTimestamp;
LapHeart_rateStartTimestamp = 0;
}
}
if (cadence > 0 && !LapEnd && !SessionEnd)
{
if (cadence > max_cadence) max_cadence = cadence;
SessionCadenceTot += cadence;
if (SessionCadenceStartTimestamp == 0)
SessionCadenceStartTimestamp = timestamp;
LapCadenceTot += cadence;
if (LapCadenceStartTimestamp == 0)
LapCadenceStartTimestamp = timestamp;
}
else
{
if (SessionCadenceStartTimestamp != 0)
{
SessionCadenceTotSeconds += lastTimestamp - SessionCadenceStartTimestamp;
SessionCadenceStartTimestamp = 0;
}
if (SessionCadenceStartTimestamp != 0)
{
SessionCadenceTotSeconds += lastTimestamp - SessionCadenceStartTimestamp;
SessionCadenceStartTimestamp = 0;
}
}
lastAltitude = altitude;
lastTravelCM = distance;
lastTimestamp = timestamp;
}
}
public class fitFileWrite
{
const byte HEADERSIZE = 12;
localMsgDef[] localMesgDefs = new localMsgDef[16];
FitFieldStream fitstream;
statistics st = new statistics();
public fitFileWrite(StreamReader file, FileStream fitFile)
{
MemoryStream memStream = new MemoryStream();
fitstream = new FitFieldStream(memStream);
memStream.Seek(HEADERSIZE, SeekOrigin.Begin);
while (!file.EndOfStream)
{
string[] str = file.ReadLine().Split(';');
if (str[0] == "data")
writeData(str, st);
if (str[0] == "def")
writeDefintion(str);
}
int size = (int)memStream.Position - HEADERSIZE;
memStream.Seek(0, SeekOrigin.Begin);
writeFitHeader(size, HEADERSIZE);
UInt16 crc = 0;
memStream.Seek(0, SeekOrigin.Begin);
while (memStream.Position < memStream.Length)
{
crc = fitstream.Get16(crc, (byte)memStream.ReadByte());
}
memStream.WriteByte((byte)(crc & 0xFF));
memStream.WriteByte((byte)(crc >> 8));
fitFile.Write(memStream.GetBuffer(), 0, (int)memStream.Position);
}
private void writeData(string[] str, statistics st)
{
byte header = byte.Parse(str[1]);
fitstream.writeValue(header);
byte fields = localMesgDefs[header].Fields;
localField[] fd = localMesgDefs[header].localFields;
int globalMesgIndex = localMesgDefs[header].globalMesgIndex;
if (globalMesgIndex == FIT.FIT_MESG_NUM_SESSION) st.calcSession();
if (globalMesgIndex == FIT.FIT_MESG_NUM_LAP) st.calcLap();
for (int i = 0; i < fields; i++)
{
fitstream.writeValue(fd[i], str[i + 2], st, globalMesgIndex);
}
if (globalMesgIndex == FIT.FIT_MESG_NUM_RECORD) st.update();
if (globalMesgIndex == FIT.FIT_MESG_NUM_SESSION) st.resetSession();
if (globalMesgIndex == FIT.FIT_MESG_NUM_LAP) st.resetLap();
}
private void writeFitHeader(Int32 size, byte headerSize)
{
fitstream.writeValue((byte)headerSize); //size header
fitstream.writeValue((byte)0x10); //protocol version
fitstream.writeValue((byte)0x40); //protocol version
fitstream.writeValue((byte)0x00); //protocol version
fitstream.writeValue(size, 0); //protocol version
fitstream.writeValue('.'); //.FIT
fitstream.writeValue('F'); //
fitstream.writeValue('I'); //
fitstream.writeValue('T'); //
}
private void writeDefintion(string[] str)
{
byte header = byte.Parse(str[1]);
int localMesgIndex = header & 0x0f;
byte reserved = byte.Parse(str[2]);
localMsgDef msgDef = new localMsgDef();
byte arch = msgDef.Architecture = byte.Parse(str[3]);
UInt16 globalMesgIndex = msgDef.globalMesgIndex = UInt16.Parse(str[4]);
byte fields = msgDef.Fields = byte.Parse(str[5]);
msgDef.localFields = new localField[fields];
msgDef.mesg = FIT.getMessageStruct(msgDef.globalMesgIndex);
localMesgDefs[localMesgIndex] = msgDef;
fitstream.writeValue(header);
fitstream.writeValue(reserved);
fitstream.writeValue(arch);
fitstream.writeValue(globalMesgIndex, 0);
fitstream.writeValue(fields);
for (int i = 0; i < fields; i++)
{
localField fielddef = new localField();
byte FieldDefinitionNumber = fielddef.FieldDefinitionNumber = byte.Parse(str[6 + (i) * 3]);
byte size = fielddef.size = byte.Parse(str[7 + (i) * 3]);
byte baseType = fielddef.baseType = byte.Parse(str[8 + (i) * 3]);
fielddef.GlobalField = FIT.getFieldStruct(msgDef.mesg, (int)FieldDefinitionNumber);
localMesgDefs[localMesgIndex].localFields[i] = fielddef;
fitstream.writeValue(FieldDefinitionNumber);
fitstream.writeValue(size);
fitstream.writeValue(baseType);
}
}
public class FitFieldStream
{
CultureInfo cuNL = FIT.cuNL;
DateTime dt1989 = FIT.dt1989;
MemoryStream file;
public bool eof { get { return (file.Position + 2 > file.Length); } }
public FitFieldStream(MemoryStream file)
{
this.file = file;
}
public void writeValue(localField localFieldDef, string value, statistics st, int globalMesgIndex)
{
UInt32 _UInt32 = 0;
Int32 _Int32 = 0;
UInt16 _UInt16 = 0;
Int16 _Int16 = 0;
byte _byte = 0;
int size = localFieldDef.size;
int arch = localFieldDef.arch;
int baseType = localFieldDef.baseType;
globalField globalField = localFieldDef.GlobalField;
string fieldName = globalField.name;
double scale = globalField.scale;
double offset = globalField.offset;
if (localFieldDef.FieldDefinitionNumber == 253)
{
DateTime dt;
DateTime.TryParseExact(value, "yyyy-MM-dd HH:mm:ss", cuNL, DateTimeStyles.None, out dt);
value = ((UInt32)dt.ToUniversalTime().Subtract(dt1989).Duration().TotalSeconds).ToString("0");
}
if (globalMesgIndex == FIT.FIT_MESG_NUM_SESSION)
{
switch (fieldName)
{
case "start_time": writeValue(st.SessionStartTimestamp, arch); return;
case "start_position_lat": writeValue(st.start_position_lat, arch); return;
case "start_position_long": writeValue(st.start_position_long, arch); return;
case "total_elapsed_time": writeValue(st.total_elapsed_time, arch); return;
case "total_timer_time": writeValue(st.total_timer_time, arch); return;
case "total_distance": writeValue(st.total_distance, arch); return;
case "total_calories": writeValue(st.total_calories, arch); return;
case "avg_speed": writeValue(st.avg_speed, arch); return;
case "max_speed": writeValue(st.max_speed, arch); return;
case "avg_heart_rate": writeValue(st.avg_heart_rate); return;
case "max_heart_rate": writeValue(st.max_heart_rate); return;
case "avg_cadence": writeValue(st.avg_cadence); return;
case "max_cadence": writeValue(st.max_cadence); return;
case "avg_power": writeValue(st.avg_power, arch); return;
case "max_power": writeValue(st.max_power, arch); return;
case "total_ascent": writeValue((UInt16)(st.SessionTotal_ascent / 5.0), arch); return;
case "total_descent": writeValue((UInt16)(st.SessionTotal_descent / 5.0), arch); return;
}
}
if (globalMesgIndex == FIT.FIT_MESG_NUM_LAP)
{
switch (fieldName)
{
case "start_time": writeValue(st.LapStartTimestamp, arch); return;
case "start_position_lat": writeValue(st.start_position_lat, arch); return;
case "start_position_long": writeValue(st.start_position_long, arch); return;
case "total_elapsed_time": writeValue(st.total_elapsed_time, arch); return;
case "total_timer_time": writeValue(st.total_timer_time, arch); return;
case "total_distance": writeValue(st.total_distance, arch); return;
case "total_calories": writeValue(st.total_calories, arch); return;
case "avg_speed": writeValue(st.avg_speed, arch); return;
case "max_speed": writeValue(st.max_speed, arch); return;
case "avg_heart_rate": writeValue(st.avg_heart_rate); return;
case "max_heart_rate": writeValue(st.max_heart_rate); return;
case "avg_cadence": writeValue(st.avg_cadence); return;
case "max_cadence": writeValue(st.max_cadence); return;
case "avg_power": writeValue(st.avg_power, arch); return;
case "max_power": writeValue(st.max_power, arch); return;
case "total_ascent": writeValue((UInt16)(st.LapTotal_ascent / 5.0), arch); return;
case "total_descent": writeValue((UInt16)(st.LapTotal_descent / 5.0), arch); return;
}
}
switch (baseType)
{
case 0x00: writeValue(FIT.StringToEnum(fieldName, value)); break;//enum
case 0x01: if (value == "") writeValue((sbyte)0x7F); else writeValue((sbyte)((double.Parse(value) + offset) * scale + 0.1)); break;//sbyte
case 0x02: if (value == "") writeValue((byte)0xFF); else writeValue(_byte = (byte)((double.Parse(value) + offset) * scale + 0.1)); break;//byte
case 0x83: if (value == "") writeValue((Int16)0x7FFF, arch); else writeValue(_Int16 = (Int16)((double.Parse(value) + offset) * scale + 0.1), arch); break;//int16
case 0x84: if (value == "") writeValue((UInt16)0xFFFF, arch); else writeValue(_UInt16 = (UInt16)((double.Parse(value) + offset) * scale + 0.1), arch); break;//Uint16
case 0x85: if (value == "") writeValue((Int32)0x7FFFFFFF, arch); else writeValue(_Int32 = (Int32)((double.Parse(value) + offset) * scale + 0.1), arch); break;//int32
case 0x86: if (value == "") writeValue((UInt32)0xFFFFFFFF, arch); else writeValue(_UInt32 = (UInt32)((double.Parse(value) + offset) * scale + 0.1), arch); break;//Uint32
case 0x87: if (value == "") writeValue((UInt32)0xFFFFFFFF, arch); else writeValue((UInt32)((double.Parse(value) + offset) * scale + 0.1), arch); break;//float32
case 0x89: if (value == "") writeValue((UInt64)0xFFFFFFFFFFFFFFFF, arch); else writeValue((UInt64)((double.Parse(value) + offset) * scale + 0.1), arch); break;//float64
case 0x0A: if (value == "") writeValue((byte)0x00); else writeValue((byte)((double.Parse(value) + offset) * scale + 0.1)); break;//byteZ
case 0x8B: if (value == "") writeValue((UInt16)0x00, arch); else writeValue((UInt16)((double.Parse(value) + offset) * scale + 0.1), arch); break;//Uint16Z
case 0x8C: if (value == "") writeValue((UInt32)0x00, arch); else writeValue((UInt32)((double.Parse(value) + offset) * scale + 0.1), arch); break;//Uint32Z
case 0x07:
for (int i = 0; i < size; i++)
writeValue(value.ToArray()[i]);
break; ; //string
case 0x0D:
for (int i = 0; i < size; i++)
writeValue(byte.Parse(value.Substring(i * 2, 2), NumberStyles.AllowHexSpecifier));
break; ; //string
default:
break;
}
if (globalMesgIndex == FIT.FIT_MESG_NUM_RECORD)
switch (fieldName)
{
case "timestamp": st.timestamp = _UInt32; break;
case "position_lat": if (st.start_position_lat == 0) st.start_position_lat = _Int32; break;
case "position_long": st.start_position_long = _Int32; break;
case "altitude": st.altitude = _UInt16; break;
case "distance": st.distance = _UInt32; break;
case "speed": st.speed = _UInt16; break;
case "power": st.power = _UInt16; break;
case "cadence": st.cadence = _byte; break;
case "heart_rate": st.heart_rate = _byte; break;
}
}
public void writeValue(char value)
{
file.WriteByte((byte)value);
}
public void writeValue(byte value)
{
file.WriteByte(value);
}
private void writeValue(sbyte value)
{
file.WriteByte((byte)value);
}
public void writeValue(Int16 value, int arch)
{
if (arch == 0)
{
file.WriteByte((byte)value);
file.WriteByte((byte)(value >> 8));
}
else
{
file.WriteByte((byte)(value >> 8));
file.WriteByte((byte)value);
}
}
public void writeValue(UInt16 value, int arch)
{
if (arch == 0)
{
file.WriteByte((byte)value);
file.WriteByte((byte)(value >> 8));
}
else
{
file.WriteByte((byte)(value >> 8));
file.WriteByte((byte)value);
}
}
public void writeValue(Int32 value, int arch)
{
if (arch == 0)
{
file.WriteByte((byte)value);
file.WriteByte((byte)(value >> 8));
file.WriteByte((byte)(value >> 16));
file.WriteByte((byte)(value >> 24));
}
else
{
file.WriteByte((byte)(value >> 24));
file.WriteByte((byte)(value >> 16));
file.WriteByte((byte)(value >> 8));
file.WriteByte((byte)value);
}
}
private void writeValue(UInt32 value, int arch)
{
if (arch == 0)
{
file.WriteByte((byte)value);
file.WriteByte((byte)(value >> 8));
file.WriteByte((byte)(value >> 16));
file.WriteByte((byte)(value >> 24));
}
else
{
file.WriteByte((byte)(value >> 24));
file.WriteByte((byte)(value >> 16));
file.WriteByte((byte)(value >> 8));
file.WriteByte((byte)value);
}
}
private void writeValue(UInt64 value, int arch)
{
if (arch == 0)
{
file.WriteByte((byte)value);
file.WriteByte((byte)(value >> 8));
file.WriteByte((byte)(value >> 16));
file.WriteByte((byte)(value >> 24));
file.WriteByte((byte)(value >> 32));
file.WriteByte((byte)(value >> 48));
file.WriteByte((byte)(value >> 56));
file.WriteByte((byte)(value >> 64));
}
else
{
file.WriteByte((byte)(value >> 64));
file.WriteByte((byte)(value >> 56));
file.WriteByte((byte)(value >> 48));
file.WriteByte((byte)(value >> 32));
file.WriteByte((byte)(value >> 24));
file.WriteByte((byte)(value >> 16));
file.WriteByte((byte)(value >> 8));
file.WriteByte((byte)value);
}
}
unsafe public UInt16 Get16(UInt16 crc, byte b)
{
UInt16[] crc_table = { 0x0000, 0xCC01, 0xD801, 0x1400, 0xF001, 0x3C00, 0x2800, 0xE401, 0xA001, 0x6C00, 0x7800, 0xB401, 0x5000, 0x9C01, 0x8801, 0x4400 };
UInt16 tmp;
// compute checksum of lower four bits of byte
tmp = crc_table[crc & 0xF];
crc = (UInt16)((crc >> 4) & 0x0FFF);
crc = (UInt16)(crc ^ tmp ^ crc_table[b & 0xF]);
// now compute checksum of upper four bits of byte
tmp = crc_table[crc & 0xF];
crc = (UInt16)((crc >> 4) & 0x0FFF);
crc = (UInt16)(crc ^ tmp ^ crc_table[(b >> 4) & 0xF]);
return crc;
}
}
}
}