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garmin_fit.cc
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/*
Support for FIT track files.
Copyright (C) 2011 Paul Brook, [email protected]
Copyright (C) 2003-2011 Robert Lipe, [email protected]
Copyright (C) 2019 Martin Buck, [email protected]
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <cstdint> // for uint8_t, uint16_t, uint32_t, int32_t, int8_t, uint64_t
#include <cstdio> // for EOF, SEEK_SET, snprintf
#include <deque> // for deque, _Deque_iterator, operator!=
#include <string> // for operator+, to_string, char_traits
#include <utility> // for pair
#include <vector> // for vector
#include <QByteArray> // for QByteArray
#include <QDateTime> // for QDateTime
#include <QFileInfo> // for QFileInfo
#include <QLatin1Char> // for QLatin1Char
#include <QString> // for QString
#include <Qt> // for CaseInsensitive
#include <QtGlobal> // for uint, qint64
#include "defs.h"
#include "garmin_fit.h"
#include "gbfile.h" // for gbfputc, gbfputuint16, gbfputuint32, gbfgetc, gbfread, gbfseek, gbfclose, gbfgetuint16, gbfopen_le, gbfputint32, gbfflush, gbfgetuint32, gbfputs, gbftell, gbfwrite, gbfile, gbsize_t
#include "jeeps/gpsmath.h" // for GPS_Math_Semi_To_Deg, GPS_Math_Gtime_To_Utime, GPS_Math_Deg_To_Semi, GPS_Math_Utime_To_Gtime
#include "src/core/logging.h" // for Warning, Fatal
#define MYNAME "fit"
/*******************************************************************************
* %%% global callbacks called by gpsbabel main process %%% *
*******************************************************************************/
void
GarminFitFormat::rd_init(const QString& fname)
{
fin = gbfopen_le(fname, "rb", MYNAME);
}
void
GarminFitFormat::rd_deinit()
{
fit_data = fit_data_t();
gbfclose(fin);
}
void
GarminFitFormat::wr_init(const QString& fname)
{
fout = gbfopen_le(fname, "w+b", MYNAME);
}
void
GarminFitFormat::wr_deinit()
{
gbfclose(fout);
}
/*******************************************************************************
* fit_parse_header- parse the global FIT header
*******************************************************************************/
void
GarminFitFormat::fit_parse_header()
{
char sig[4];
int len = gbfgetc(fin);
if (len == EOF || len < 12) {
fatal(MYNAME ": Bad header\n");
}
if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": header len=" << len;
}
int ver = gbfgetc(fin);
if (ver == EOF || (ver >> 4) > 2)
fatal(MYNAME ": Unsupported protocol version %d.%d\n",
ver >> 4, ver & 0xf);
if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": protocol version=" << ver;
}
// profile version
ver = gbfgetuint16(fin);
// data length
fit_data.len = gbfgetuint32(fin);
// File signature
if (gbfread(sig, 4, 1, fin) != 1) {
fatal(MYNAME ": Unexpected end of file\n");
}
if (sig[0] != '.' || sig[1] != 'F' || sig[2] != 'I' || sig[3] != 'T') {
fatal(MYNAME ": .FIT signature missing\n");
}
if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": profile version=" << ver;
Debug(1) << MYNAME ": fit_data.len=" << fit_data.len;
}
// Header CRC may be omitted entirely
if (len >= kReadHeaderCrcLen) {
uint16_t hdr_crc = gbfgetuint16(fin);
// Header CRC may be set to 0, or contain the CRC over previous bytes.
if (hdr_crc != 0) {
// Check the header CRC
uint16_t crc = 0;
gbfseek(fin, 0, SEEK_SET);
for (unsigned int i = 0; i < kReadHeaderCrcLen; ++i) {
int data = gbfgetc(fin);
if (data == EOF) {
fatal(MYNAME ": File %s truncated\n", qPrintable(fin->name));
}
crc = fit_crc16(data, crc);
}
if (crc != 0) {
Warning().nospace() << MYNAME ": Header CRC mismatch in file " << fin->name << ".";
if (!opt_recoverymode) {
fatal(FatalMsg().nospace() << MYNAME ": File " << fin->name << " is corrupt. Use recoverymode option at your risk.");
}
} else if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": Header CRC verified.";
}
}
}
QFileInfo fi(fin->name);
qint64 size = fi.size();
if ((len + fit_data.len + 2) != size) {
Warning().nospace() << MYNAME ": File size " << size << " is not expected given header len " << len << ", data length " << fit_data.len << " and a 2 byte file CRC.";
} else if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": File size matches expectations from information in the header.";
}
gbfseek(fin, len, SEEK_SET);
fit_data.global_utc_offset = 0;
}
uint8_t
GarminFitFormat::fit_getuint8()
{
if (fit_data.len < 1) {
throw ReaderException("record truncated: expecting char[1], but only got " + std::to_string(fit_data.len) + ".");
}
int val = gbfgetc(fin);
if (val == EOF) {
throw ReaderException("unexpected end of file with fit_data.len=" + std::to_string(fit_data.len) + ".");
}
--fit_data.len;
return static_cast<uint8_t>(val);
}
uint16_t
GarminFitFormat::fit_getuint16()
{
char buf[2];
if (fit_data.len < 2) {
throw ReaderException("record truncated: expecting char[2], but only got " + std::to_string(fit_data.len) + ".");
}
gbsize_t count = gbfread(buf, 2, 1, fin);
if (count != 1) {
throw ReaderException("unexpected end of file with fit_data.len=" + std::to_string(fit_data.len) + ".");
}
fit_data.len -= 2;
if (fit_data.endian) {
return be_read16(buf);
} else {
return le_read16(buf);
}
}
uint32_t
GarminFitFormat::fit_getuint32()
{
char buf[4];
if (fit_data.len < 4) {
throw ReaderException("record truncated: expecting char[4], but only got " + std::to_string(fit_data.len) + ".");
}
gbsize_t count = gbfread(buf, 4, 1, fin);
if (count != 1) {
throw ReaderException("unexpected end of file with fit_data.len=" + std::to_string(fit_data.len) + ".");
}
fit_data.len -= 4;
if (fit_data.endian) {
return be_read32(buf);
} else {
return le_read32(buf);
}
}
QString
GarminFitFormat::fit_getstring(int size)
{
if (fit_data.len < size) {
throw ReaderException("record truncated: expecting " + std::to_string(size) + " bytes, but only got " + std::to_string(fit_data.len) + ".");
}
QByteArray buf(size + 1, 0); // almost certainly an extra byte, QByteArray should guarnatee a terminator.
gbsize_t count = gbfread(buf.data(), size, 1, fin);
if (count != 1) {
throw ReaderException("unexpected end of file with fit_data.len=" + std::to_string(fit_data.len) + ".");
}
fit_data.len -= size;
return QString(buf.constData());
}
void
GarminFitFormat::fit_parse_definition_message(uint8_t header)
{
int local_id = header & 0x0f;
fit_message_def def;
// first byte is reserved. It's usually 0 and we don't know what it is,
// but we've seen some files that are 0x40. So we just read it and toss it.
(void) fit_getuint8();
// second byte is endianness
def.endian = fit_getuint8();
if (def.endian > 1) {
throw ReaderException(QStringLiteral("Bad endian field 0x%1 at file position 0x%2.").arg(def.endian, 0, 16).arg(gbftell(fin) - 1, 0, 16).toStdString());
}
fit_data.endian = def.endian;
// next two bytes are the global message number
def.global_id = fit_getuint16();
// byte 5 has the number of records in the remainder of the definition message
int num_fields = fit_getuint8();
if (global_opts.debug_level >= 8) {
Debug(8) << MYNAME ": definition message contains " << num_fields << " records";
}
// remainder of the definition message is data at one byte per field * 3 fields
for (int i = 0; i < num_fields; ++i) {
int id = fit_getuint8();
int size = fit_getuint8();
int type = fit_getuint8();
fit_field_t field = {id, size, type};
if (global_opts.debug_level >= 8) {
Debug(8) << MYNAME ": record " << i << " ID: " << field.id << " SIZE: "
<< field.size << " TYPE: " << field.type << " fit_data.len="
<< fit_data.len;
}
def.fields.append(field);
}
// If we have developer fields (since version 2.0) they must be read too
// These is one byte containing the number of fields and 3 bytes for every field.
// So this is identical to the normal fields but the meaning of the content is different.
//
// Currently we just want to ignore the developer fields because they are not meant
// to hold relevant data we need (currently handle) for the conversion.
// For simplicity using the existing infrastructure we do it in the following way:
// * We read it in as normal fields
// * We set the field id to kFieldInvalid so that it do not interfere with valid id's from
// the normal fields.
// -In our opinion in practice this will not happen, because we do not expect
// developer fields e.g. inside lap or record records. But we want to be safe here.
// * We do not have to change the type as we did for the id above, because fit_read_field()
// already uses the size information to read the data, if the type does not match the size.
//
// If we want to change this or if we want to avoid the xrealloc call, we can change
// it in the future by e.g. extending the fit_message_def struct.
// Bit 5 of the header specify if we have developer fields in the data message
bool hasDevFields = static_cast<bool>(header & 0x20);
if (hasDevFields) {
int numOfDevFields = fit_getuint8();
if (global_opts.debug_level >= 8) {
Debug(8) << MYNAME ": definition message contains " << numOfDevFields << " developer records";
}
if (numOfDevFields > 0) {
int numOfFields = num_fields + numOfDevFields;
for (int i = num_fields; i < numOfFields; ++i) {
int id = fit_getuint8();
int size = fit_getuint8();
int type = fit_getuint8();
fit_field_t field = {id, size, type};
if (global_opts.debug_level >= 8) {
Debug(8) << MYNAME ": developer record " << i - num_fields <<
" ID: " << field.id << " SIZE: " << field.size <<
" TYPE: " << field.type << " fit_data.len=" << fit_data.len;
}
// Because we parse developer fields like normal fields and we do not want
// that the field id interfere which valid id's from the normal fields
field.id = kFieldInvalid;
def.fields.append(field);
}
}
}
fit_data.message_def.insert(local_id, def);
}
QVariant
GarminFitFormat::fit_read_field(const fit_field_t& f)
{
/* https://forums.garmin.com/showthread.php?223645-Vivoactive-problems-plus-suggestions-for-future-firmwares&p=610929#post610929
* Per section 4.2.1.4.2 of the FIT Protocol the size of a field may be a
* multiple of the size of the underlying type, indicating the field
* contains multiple elements represented as an array.
*
* Garmin Product Support
*/
// In the case that the field contains one value of the indicated type we return that value,
// otherwise we just skip over the data.
if (global_opts.debug_level >= 8) {
Debug(8) << MYNAME ": fit_read_field: read data field with f.type=0x" <<
Qt::hex << f.type << " and f.size=" <<
Qt::dec << f.size << " fit_data.len=" << fit_data.len;
}
switch (f.type) {
case 0: // enum
case 1: // sint8
case 2: // uint8
if (f.size == 1) {
return fit_getuint8();
} else { // ignore array data
for (int i = 0; i < f.size; ++i) {
fit_getuint8();
}
if (global_opts.debug_level >= 8) {
Debug(8) << MYNAME ": fit_read_field: skipping 1-byte array data";
}
return -1;
}
case 0x7:
return fit_getstring(f.size);
case 0x83: // sint16
case 0x84: // uint16
if (f.size == 2) {
return fit_getuint16();
} else { // ignore array data
for (int i = 0; i < f.size; ++i) {
fit_getuint8();
}
if (global_opts.debug_level >= 8) {
Debug(8) << MYNAME ": fit_read_field: skipping 2-byte array data";
}
return -1;
}
case 0x85: // sint32
case 0x86: // uint32
if (f.size == 4) {
return fit_getuint32();
} else { // ignore array data
for (int i = 0; i < f.size; ++i) {
fit_getuint8();
}
if (global_opts.debug_level >= 8) {
Debug(8) << MYNAME ": fit_read_field: skipping 4-byte array data";
}
return -1;
}
default: // Ignore everything else for now.
for (int i = 0; i < f.size; ++i) {
fit_getuint8();
}
if (global_opts.debug_level >= 8) {
Debug(8) << MYNAME ": fit_read_field: skipping unrecognized data type";
}
return -1;
}
}
void
GarminFitFormat::fit_parse_data(const fit_message_def& def, int time_offset)
{
uint32_t timestamp = fit_data.last_timestamp + time_offset;
int32_t lat = 0x7fffffff;
int32_t lon = 0x7fffffff;
uint16_t alt = 0xffff;
uint16_t speed = 0xffff;
uint8_t heartrate = 0xff;
uint8_t cadence = 0xff;
uint16_t power = 0xffff;
int8_t temperature = 0x7f;
//int32_t startlat = 0x7fffffff;
//int32_t startlon = 0x7fffffff;
int32_t endlat = 0x7fffffff;
int32_t endlon = 0x7fffffff;
//uint32_t starttime = 0; // ??? default ?
uint8_t event = 0xff;
uint8_t eventtype = 0xff;
QString name;
QString description;
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data ID " << def.global_id << " with num_fields=" << def.fields.size();
}
for (int i = 0; i < def.fields.size(); ++i) {
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing field " << i;
}
const fit_field_t& f = def.fields.at(i);
QVariant field = fit_read_field(f);
uint32_t val = -1;
if (field.canConvert<uint>()) {
val = field.toUInt();
}
if (f.id == kFieldTimestamp) {
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: timestamp=" << static_cast<int32_t>(val);
}
timestamp = val;
// if the timestamp is < 0x10000000, this value represents
// system time; to convert it to UTC, add the global utc offset to it
if (timestamp < 0x10000000) {
timestamp += fit_data.global_utc_offset;
}
fit_data.last_timestamp = timestamp;
} else {
switch (def.global_id) {
case kIdDeviceSettings: // device settings message
switch (f.id) {
case kFieldGlobalUtcOffset:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: global utc_offset=" << static_cast<int32_t>(val);
}
fit_data.global_utc_offset = val;
break;
default:
if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": unrecognized data type in GARMIN FIT device settings: f.id=" << f.id;
}
break;
} // switch (f.id)
// end of case def.global_id = kIdDeviceSettings
break;
case kIdRecord: // record message - trkType is a track
switch (f.id) {
case kFieldLatitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: lat=" << static_cast<int32_t>(val);
}
lat = val;
break;
case kFieldLongitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: lon=" << static_cast<int32_t>(val);
}
lon = val;
break;
case kFieldAltitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: alt=" << static_cast<int32_t>(val);
}
if (val != 0xffff) {
alt = val;
}
break;
case kFieldHeartRate:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: heartrate=" << static_cast<int32_t>(val);
}
heartrate = val;
break;
case kFieldCadence:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: cadence=" << static_cast<int32_t>(val);
}
cadence = val;
break;
case kFieldDistance:
// NOTE: 5 is DISTANCE in cm ... unused.
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": unrecognized data type in GARMIN FIT record: f.id=" << f.id;
}
break;
case kFieldSpeed:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: speed=" << static_cast<int32_t>(val);
}
if (val != 0xffff) {
speed = val;
}
break;
case kFieldPower:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: power=" << static_cast<int32_t>(val);
}
power = val;
break;
case kFieldTemperature:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: temperature=" << static_cast<int32_t>(val);
}
temperature = val;
break;
case kFieldEnhancedSpeed:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: enhanced_speed=" << static_cast<int32_t>(val);
}
if (val != 0xffff) {
speed = val;
}
break;
case kFieldEnhancedAltitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: enhanced_altitude=" << static_cast<int32_t>(val);
}
if (val != 0xffff) {
alt = val;
}
break;
default:
if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": unrecognized data type in GARMIN FIT record: f.id=" << f.id;
}
break;
} // switch (f.id)
// end of case def.global_id = kIdRecord
break;
case kIdLap: // lap wptType , endlat+lon is wpt
switch (f.id) {
case kFieldStartTime:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: starttime=" << static_cast<int32_t>(val);
}
//starttime = val;
break;
case kFieldStartLatitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: startlat=" << static_cast<int32_t>(val);
}
//startlat = val;
break;
case kFieldStartLongitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: startlon=" << static_cast<int32_t>(val);
}
//startlon = val;
break;
case kFieldEndLatitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: endlat=" << static_cast<int32_t>(val);
}
endlat = val;
break;
case kFieldEndLongitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: endlon=" << static_cast<int32_t>(val);
}
endlon = val;
break;
case kFieldElapsedTime:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: elapsedtime=" << static_cast<int32_t>(val);
}
//elapsedtime = val;
break;
case kFieldTotalDistance:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: totaldistance=" << static_cast<int32_t>(val);
}
//totaldistance = val;
break;
default:
if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": unrecognized data type in GARMIN FIT lap: f.id=" << f.id;
}
break;
} // switch (f.id)
// end of case def.global_id = kIdLap
break;
case kIdEvent:
switch (f.id) {
case kFieldEvent:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: event=" << static_cast<int32_t>(val);
}
event = val;
break;
case kFieldEventType:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: eventtype=" << static_cast<int32_t>(val);
}
eventtype = val;
break;
} // switch (f.id)
// end of case def.global_id = kIdEvent
break;
case kIdLocations:
switch (f.id) {
case kFieldLocLatitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: lat=" << static_cast<int32_t>(val);
}
lat = val;
break;
case kFieldLocLongitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: lon=" << static_cast<int32_t>(val);
}
lon = val;
break;
case kFieldLocAltitude:
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: alt=" << static_cast<int32_t>(val);
}
if (val != 0xffff) {
alt = val;
}
break;
case kFieldLocationName:
name = field.toString();
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: location name=" << name;
}
break;
case kFieldLocationDescription:
description = field.toString();
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": parsing fit data: location description=" << description;
}
break;
default:
if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": unrecognized data type in GARMIN FIT locations: f.id=" << f.id;
}
break;
} // switch (f.id)
// end of case def.global_id = kIdLocations
break;
default:
if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": unrecognized/unhandled global ID for GARMIN FIT: " << def.global_id;
}
break;
} // switch (def.global_id)
}
}
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": storing fit data with num_fields=" << def.fields.size();
}
switch (def.global_id) {
case kIdLap: { // lap message
if (endlat == 0x7fffffff || endlon == 0x7fffffff) {
break;
}
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": storing fit data LAP " << def.global_id;
}
auto* lappt = new Waypoint;
lappt->latitude = GPS_Math_Semi_To_Deg(endlat);
lappt->longitude = GPS_Math_Semi_To_Deg(endlon);
lappt->shortname = QStringLiteral("LAP%1").arg(++lap_ct, 3, 10, QLatin1Char('0'));
waypt_add(lappt);
}
break;
case kIdRecord: { // record message
if ((lat == 0x7fffffff || lon == 0x7fffffff) && !opt_allpoints) {
break;
}
auto* waypt = new Waypoint;
if (lat != 0x7fffffff) {
waypt->latitude = GPS_Math_Semi_To_Deg(lat);
}
if (lon != 0x7fffffff) {
waypt->longitude = GPS_Math_Semi_To_Deg(lon);
}
if (alt != 0xffff) {
waypt->altitude = (alt / 5.0) - 500;
}
waypt->SetCreationTime(GPS_Math_Gtime_To_Utime(timestamp));
if (speed != 0xffff) {
waypt->set_speed(speed / 1000.0f);
}
if (heartrate != 0xff) {
waypt->heartrate = heartrate;
}
if (cadence != 0xff) {
waypt->cadence = cadence;
}
if (power != 0xffff) {
waypt->power = power;
}
if (temperature != 0x7f) {
waypt->set_temperature(temperature);
}
if (new_trkseg) {
waypt->wpt_flags.new_trkseg = 1;
new_trkseg = false;
}
track_add_wpt(fit_data.track, waypt);
}
break;
case kIdEvent: // event message
if (event == kEnumEventTimer && eventtype == kEnumEventTypeStart) {
// Start event, start new track segment. Note: We don't do this
// on stop events because some GPS devices seem to generate a last
// trackpoint after the stop event and that would erroneously get
// assigned to the next segment.
new_trkseg = true;
}
break;
case kIdLocations: { // locations message
if (lat == 0x7fffffff || lon == 0x7fffffff) {
break;
}
if (global_opts.debug_level >= 7) {
Debug(7) << MYNAME ": storing fit data location " << def.global_id;
}
auto* locpt = new Waypoint;
locpt->latitude = GPS_Math_Semi_To_Deg(lat);
locpt->longitude = GPS_Math_Semi_To_Deg(lon);
if (alt != 0xffff) {
locpt->altitude = (alt / 5.0) - 500;
}
locpt->shortname = name;
locpt->description = description;
waypt_add(locpt);
}
break;
}
}
void
GarminFitFormat::fit_parse_data_message(uint8_t header)
{
int local_id = header & 0x0f;
if (fit_data.message_def.contains(local_id)) {
fit_parse_data(fit_data.message_def.value(local_id), 0);
} else {
throw ReaderException(
QString("Message %1 hasn't been defined before being used at file position 0x%2.").
arg(local_id).arg(gbftell(fin) - 1, 0, 16).toStdString());
}
}
void
GarminFitFormat::fit_parse_compressed_message(uint8_t header)
{
int local_id = (header >> 5) & 3;
if (fit_data.message_def.contains(local_id)) {
fit_parse_data(fit_data.message_def.value(local_id), header & 0x1f);
} else {
throw ReaderException(
QString("Compressed message %1 hasn't been defined before being used at file position 0x%2.").
arg(local_id).arg(gbftell(fin) - 1, 0, 16).toStdString());
}
}
/*******************************************************************************
* fit_parse_record- parse each record in the file
*******************************************************************************/
void
GarminFitFormat::fit_parse_record()
{
gbsize_t position = gbftell(fin);
uint8_t header = fit_getuint8();
// high bit 7 set -> compressed message (0 for normal)
// second bit 6 set -> 0 for data message, 1 for definition message
// bit 5 -> message type specific
// definition message: Bit set means that we have additional Developer Field definitions
// behind the field definitions inside the record content
// data message: currently not used
// bit 4 -> reserved
// bits 3..0 -> local message type
if (header & 0x80) {
if (global_opts.debug_level >= 6) {
Debug(6) << MYNAME ": got compressed message at file position 0x" <<
Qt::hex << position << ", fit_data.len=" << Qt::dec << fit_data.len
<< " ...local message type 0x" << Qt::hex << (header & 0x0f);
}
fit_parse_compressed_message(header);
} else if (header & 0x40) {
if (global_opts.debug_level >= 6) {
Debug(6) << MYNAME ": got definition message at file position 0x" <<
Qt::hex << position << ", fit_data.len=" << Qt::dec << fit_data.len
<< " ...local message type 0x" << Qt::hex << (header & 0x0f);
}
fit_parse_definition_message(header);
} else {
if (global_opts.debug_level >= 6) {
Debug(6) << MYNAME ": got data message at file position 0x" <<
Qt::hex << position << ", fit_data.len=" << Qt::dec << fit_data.len
<< " ...local message type 0x" << Qt::hex << (header & 0x0f);
}
fit_parse_data_message(header);
}
}
void
GarminFitFormat::fit_check_file_crc() const
{
// Check file CRC
gbsize_t position = gbftell(fin);
uint16_t crc = 0;
gbfseek(fin, 0, SEEK_SET);
while (true) {
int data = gbfgetc(fin);
if (data == EOF) {
break;
}
crc = fit_crc16(data, crc);
}
if (crc != 0) {
Warning().nospace() << MYNAME ": File CRC mismatch in file " << fin->name << ".";
if (!opt_recoverymode) {
fatal(FatalMsg().nospace() << MYNAME ": File " << fin->name << " is corrupt. Use recoverymode option at your risk.");
}
} else if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": File CRC verified.";
}
gbfseek(fin, position, SEEK_SET);
}
/*******************************************************************************
* fit_read- global entry point
* - parse the header
* - parse all the records in the file
*******************************************************************************/
void
GarminFitFormat::read()
{
fit_check_file_crc();
fit_parse_header();
fit_data.track = new route_head;
track_add_head(fit_data.track);
if (global_opts.debug_level >= 1) {
Debug(1) << MYNAME ": starting to read data with fit_data.len=" << fit_data.len;
}
try {
while (fit_data.len) {
fit_parse_record();
}
} catch (ReaderException& e) {
if (opt_recoverymode) {
warning(MYNAME ": %s\n",e.what());
warning(MYNAME ": Aborting read and continuing processing.\n");
} else {
fatal(MYNAME ": %s Use recoverymode option at your risk.\n",e.what());
}
}
}
/*******************************************************************************
* FIT writing
*******************************************************************************/
void
GarminFitFormat::fit_write_message_def(uint8_t local_id, uint16_t global_id, const std::vector<fit_field_t>& fields) const
{
gbfputc(0x40 | local_id, fout); // Local ID
gbfputc(0, fout); // Reserved
gbfputc(0, fout); // Little endian
gbfputuint16(global_id, fout); // Global ID
gbfputc(fields.size(), fout); // Number of fields
for (auto&& field : fields) {
gbfputc(field.id, fout); // Field definition number
gbfputc(field.size, fout); // Field size in bytes
gbfputc(field.type, fout); // Field type
}
}
uint16_t
GarminFitFormat::fit_crc16(uint8_t data, uint16_t crc)
{
static const uint16_t crc_table[] = {
0x0000, 0xcc01, 0xd801, 0x1400, 0xf001, 0x3c00, 0x2800, 0xe401,
0xa001, 0x6c00, 0x7800, 0xb401, 0x5000, 0x9c01, 0x8801, 0x4400
};
crc = (crc >> 4) ^ crc_table[crc & 0xf] ^ crc_table[data & 0xf];
crc = (crc >> 4) ^ crc_table[crc & 0xf] ^ crc_table[(data >> 4) & 0xf];
return crc;
}
void
GarminFitFormat::fit_write_timestamp(const gpsbabel::DateTime& t) const
{
uint32_t t_fit;
if (t.isValid() && t.toTime_t() >= (unsigned int)GPS_Math_Gtime_To_Utime(0)) {
t_fit = GPS_Math_Utime_To_Gtime(t.toTime_t());
} else {
t_fit = 0xffffffff;
}
gbfputuint32(t_fit, fout);
}
void
GarminFitFormat::fit_write_fixed_string(const QString& s, unsigned int len) const
{
QString trimmed(s);
QByteArray u8buf;
// Truncate if too long, making sure not to chop in the middle of a UTF-8
// character (i.e. we chop the unicode string and then check whether its
// UTF-8 representation fits)
while (true) {
u8buf = trimmed.toUtf8();
if (static_cast<unsigned int>(u8buf.size()) < len) {
break;
}
trimmed.chop(1);
}
// If the string was too short initially or we had to chop multibyte
// characters, the UTF-8 representation might be too short now, so pad
// it.
u8buf.append(len - u8buf.size(), '\0');
gbfwrite(u8buf.data(), len, 1, fout);
}
void
GarminFitFormat::fit_write_position(double pos) const
{
if (pos >= -180 && pos < 180) {
gbfputint32(GPS_Math_Deg_To_Semi(pos), fout);
} else {
gbfputint32(0xffffffff, fout);
}
}
// Note: The data fields written using fit_write_msg_*() below need to match
// the message field definitions in fit_msg_fields_* above!
void
GarminFitFormat::fit_write_msg_file_id(uint8_t type, uint16_t manufacturer, uint16_t product,
const gpsbabel::DateTime& time_created) const
{
gbfputc(kWriteLocalIdFileId, fout);
gbfputc(type, fout);
gbfputuint16(manufacturer, fout);
gbfputuint16(product, fout);
fit_write_timestamp(time_created);
}
void
GarminFitFormat::fit_write_msg_course(const QString& name, uint8_t sport) const
{
gbfputc(kWriteLocalIdCourse, fout);
fit_write_fixed_string(name, 0x10);
gbfputc(sport, fout);
}
void
GarminFitFormat::fit_write_msg_lap(const gpsbabel::DateTime& timestamp, const gpsbabel::DateTime& start_time,
double start_position_lat, double start_position_long,
double end_position_lat, double end_position_long,
uint32_t total_elapsed_time_s, double total_distance_m,
double avg_speed_ms, double max_speed_ms) const
{
gbfputc(kWriteLocalIdLap, fout);
fit_write_timestamp(timestamp);
fit_write_timestamp(start_time);
fit_write_position(start_position_lat);
fit_write_position(start_position_long);
fit_write_position(end_position_lat);
fit_write_position(end_position_long);
if (total_elapsed_time_s < 4294967) {
gbfputuint32(total_elapsed_time_s * 1000, fout);
gbfputuint32(total_elapsed_time_s * 1000, fout);
} else {
gbfputuint32(0xffffffff, fout);
gbfputuint32(0xffffffff, fout);
}
if (total_distance_m >= 0 && total_distance_m < 42949672.94) {
gbfputuint32(total_distance_m * 100, fout);
} else {
gbfputuint32(0xffffffff, fout);
}
if (avg_speed_ms >= 0 && avg_speed_ms < 65.534) {
gbfputuint16(avg_speed_ms * 1000, fout);
} else {