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image2gpx.pl
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#! /usr/bin/perl
#
# Copyright (C) 2014 [email protected]
#
use strict;
use warnings;
use GpsWatch;
use Data::Dumper;
use List::Util qw(sum);
use XML::Writer;
#
$Data::Dumper::Sortkeys = 1;
sub format_lon_lat {
my ($val) = @_;
return $val / 10000000.0;
}
sub to_sint32 {
if (@_ == 4) {
return unpack('l', pack ('L', $_[0] + ($_[1]<<8) + ($_[2]<<16) +($_[3]<<24)));
}
elsif (@_ ==2) {
return unpack('s', pack ('S', $_[0] + ($_[1]<<8)));
}
elsif (@_ ==1) {
return unpack('c', pack ('C', $_[0]));
}
die "not implemented";
}
sub to_uint {
if (@_ == 4) {
return $_[0] + ($_[1]<<8) + ($_[2]<<16) +($_[3]<<24);
}
elsif (@_ ==2) {
return $_[0] + ($_[1]<<8);
}
elsif (@_ ==1) {
return $_[0];
}
die "not implemented : ".@_.Dumper(caller);
}
sub format_arr {
return join(',', map { defined $_ ? sprintf( "%03d", $_ ): 'xxx'} @_);
}
sub format_gps_time {
die "format_gps_time error: must give ref to 6-elem arr" unless (scalar @_) != 6;
return sprintf("20%02d-%02d-%02dT%02d:%02d:%02dZ", @_);
}
sub format_mm_ss {
die "format_gps_time error: must give ref to 2-elem arr" unless (scalar @_) != 2;
return sprintf("%02d:%02d", @_);
}
sub parse_sample {
my ($data, $addr, $id) = @_;
my $result = {
id => $id,
type => $data->[$addr],
addr => $addr,
};
my %lengths = (
0x00, 25,
0x80, 25,
0x01, 21,
0x02, 3,
0x03, 8,
0xff, 0
);
die "result does not have a type specified @ $addr".Dumper(caller)." " unless defined $result->{type};
$result->{length} = $lengths{$result->{type}} if defined $lengths{$result->{type}};
if ($result->{type} == 0x00 || $result->{type} == 0x01 || $result->{type} == 0x80) {
my $a;
my $d = $data;
$result->{fix_quality_hunch} = $d->[$addr+1];
if ($result->{type} == 0x01) {
$result->{timestamp} = format_mm_ss( @{$data}[$addr+2..$addr+4] );
$a = $addr;
}
else {
$result->{timestamp} = format_gps_time( @{$data}[$addr+2 .. $addr+8] );
$a = $addr + 4;
}
# then comes long timestamp for 000, short for 001
$result->{lon} = to_sint32(@{$d}[$a+4 .. $a+7]);
$result->{lat} = to_sint32(@{$d}[$a+8 .. $a+11]);
$result->{ele} = to_sint32(@{$d}[$a+12 .. $a+13]);
$result->{f5} = $d->[$a+14];
$result->{f6} = $d->[$a+15];
$result->{f7} = $d->[$a+16];
$result->{f8} = $d->[$a+17];
$result->{f9} = $d->[$a+18];
$result->{f10} = $d->[$a+19];
$result->{hr} = $d->[$a+20];
}
elsif ($result->{type} == 0x02) {
$result->{timestamp} = format_mm_ss( @{$data}[$addr+1..$addr+3] );
}
elsif ($result->{type} == 0x03) {
$result->{timestamp} = format_gps_time( @{$data}[$addr+1 .. $addr+7] );
$result->{hr} = $data->[$addr+7];
}
elsif ($result->{type} == 0xff) {
# last entry.
# XXX here, something is still wrong.
# :
}
else {
die sprintf ("unknown sample type $result->{type} @ 0x%04x # %d", $addr, $id);
}
$result->{dump} = format_arr @{$data}[$addr .. $addr + $result->{length} -1];
return $result;
}
sub parse_leader_block {
my ($data, $block_id, $first_block) = @_;
my $addr = 0x1000 * $block_id;
my $result = {
is_first => !$first_block,
addr => $addr,
id => $block_id,
};
# 6h45m56s
# = 24356 sec
# need to parse 23156=0x5a74 samples$
#
# nn nn ll ss ss ss ss ss - ss ww ww ww ?? ?? ?? pp
$result->{numsamples} = to_uint( @{$data}[$addr..$addr+1]);
$result->{lapcount} = $data->[$addr + 2];
$result->{start_time} = format_gps_time( reverse @{$data}[$addr+2 .. $addr+8] );
$result->{total_workout_time} = sprintf("%02d:%02d:%02d", reverse @{$data}[$addr+8 .. $addr+11] );
$result->{profile} = $data->[$addr + 15];
# km km km km av av ma ma - ?? ?? ?? ?? ?? ?? ?? ??
$result->{total_km} = sprintf("%.3f", to_uint( @{$data}[$addr+16 .. $addr+19]) / 10000.0);
$result->{avg_speed} = sprintf("%.1f", to_uint( @{$data}[$addr+20 .. $addr+21] ) / 10.0);
$result->{max_speed} = sprintf("%.1f", to_uint ( @{$data}[$addr+22 .. $addr+23]) / 10.0);
# cc cc ?? ?? ?? ?? ?? ?? - ?? ?? ?? ?? ?? ?? ?? ??
$result->{calories} = sprintf("%.1f", to_uint( @{$data}[$addr+32 .. $addr+33]) / 100.0);
$result->{dump} = format_arr(@{$data}[$addr..$addr+128]);
# missing:
# time hr inzone hh:mm:ss
# hr above hh mm ss
# hr below hh mm ss
# hr min
# hr max
# hr avg
$result->{laps} = [];
$result->{laprecords} = [];
for (my $laps = 0; $laps < $result->{lapcount}; $laps ++) {
# tt tt tt tt ?? ?? ?? ?? - km km km km sp sp ??
my $lap_start = $addr + 0x40 + 0x10*$laps;
my $lap = {};
# missing: lap avg hr
# accum time
# accum distance
# accum speed
$lap->{laptime} = sprintf("%02d:%02d:%02d.%02x", @{$data}[$lap_start .. $lap_start+3] );
$lap->{km} = sprintf("%.3f", to_uint( @{$data}[$lap_start + 8 .. $lap_start+11]) / 10000.0);
$lap->{avg_speed} = sprintf("%.1f", to_uint( @{$data}[$lap_start+12 .. $lap_start+13] ) / 10.0);
push(@{$result->{laps}}, $lap);
push (@{$result->{laprecords}}, format_arr @{$data}[$lap_start .. $lap_start + 15]);
}
return $result;
}
sub parse_sample_block {
my ($data, $block_id, $leader) = @_;
my $addr = 0x1000 * $block_id;
my $result = {
profile => $data->[$addr + 0x0f],
addr => $addr,
id => $block_id,
};
my $numsamples = $leader->{numsamples};
$result->{expected_num_samples} = $numsamples;
$result->{samples} = [];
$result->{seen_sample_types} = {};
my $block_offset = $addr;
for (my $i = 0; $i <= $numsamples; $i++) {
die "block_offset > length(data): $block_offset" if $block_offset > scalar @$data;
my $sample = parse_sample($data, $block_offset, $i);
$block_offset += $sample->{length};
$result->{seen_sample_types}->{$sample->{type}} ++;
push(@{$result->{samples}}, $sample);
if ($sample->{type} == 0xff) {
$result->{incomplete_data} = 1;
last;
}
}
$result->{next_bytes} = format_arr @{$data}[$block_offset .. $block_offset+0x20];
return $result;
}
sub parse_block_alloc {
my ($data) = @_;
my $n = 0;
while ( ($data->[0xe0 + $n/8] & ( 1<< ($n%8))) == 0) {
$n++;
die "failed to parse alloc" if $n > 1000;
};
return $n;
}
sub parse_block_0 {
my ($data) = @_;
my $result = { };
die 'no data' unless defined $data && defined $data->[0];
$result->{checksum} = $data->[0];
$result->{checksum_inv} = $data->[1];
die 'checksum error' unless $result->{checksum} == ( 0xff & ~ $result->{checksum_inv}) ;
$result->{timezone} = $data->[3];
$result->{interval} = $data->[14];
$result->{selected_profile} = $data->[0x10+10];
$result->{nblocks} = parse_block_alloc($data);
$result->{toc} = join(",", @{$data}[0x100..0x13f] );
$result->{allocf} = join(",", map {scalar reverse sprintf "%08b", $_ } @{$data}[0xe0..0xef] );
$result->{allocb} = join(",", map {scalar reverse sprintf "%08b", $_ } @{$data}[0xf0..0xff] );
if (@$data > 0x1000) {
$result->{wos} = [];
my $last_block_num = 0xff;
my $leader = 1;
for (my $i=0; scalar @{$result->{wos}} < $result->{nblocks}-1 ; $i++) {
my $wo_entry = $data->[0x100 + $i];
if ($wo_entry != 0xff) {
if ($leader == 1) {
my $parsed = parse_leader_block($data, $wo_entry, 0);
$parsed->{samples} = parse_sample_block($data, $wo_entry+1, $parsed);
push (@{$result->{wos}}, $parsed);
$leader = 0;
}
}
elsif ($last_block_num != 0xff) {
$leader = 1;
}
else {
last;
}
$last_block_num = $wo_entry;
}
}
else {
$result->{wos} = "not included in dump";
}
$result->{pathnames} = [];
for(my $i = 0; $i < 10; $i ++) {
my $name = pack('C*', @{$data}[0x600 + $i*32 .. 0x600 + ($i+1)*32-1]);
$name =~ s/\x00//g;
push(@{$result->{pathnames}}, $name);
}
$result->{profiles} = [];
for (my $i = 0; $i < 5; $i++) {
my $name = pack('C*', @{$data}[0x900 + $i*10 .. 0x900 + ($i+1)*10-1]);
$name =~ s/\xff|\x00//g;
push(@{$result->{profiles}}, $name);
}
# global string table @ 0xf4000
# global string table @ 0xf4000
# global string table @ 0xf5000
# global string table @ 0xf6000 DE
# global string table @ 0xf7000
return $result;
}
# braunau 48g15'30"N 13g2'6"E 351m 48.258333 13.035
# linz 48g18'N 14g17'E 266m 48.3 14.283333
sub parse_file {
my ($data, $fn) = @_;
my $parsed = parse_block_0($data);
$parsed->{input_file} = $fn;
{
open (my $fh_dump, '>', $fn.'.dump');
print $fh_dump Dumper($parsed);
close ($fh_dump);
}
{
open (my $fh_decode, '>', $fn.'.decode');
if (ref $parsed->{wos} eq "ARRAY") {
my $wo_id = 0;
foreach my $wo (@{$parsed->{wos}}) {
foreach my $entry ($wo->{samples}) {
printf ( $fh_decode ">%02d\n", $entry->{id});
if (!$entry->{is_first}) {
foreach my $sample (@{$entry->{samples}}){
printf ( $fh_decode "i %02d %3.f/%3.f/%d/%d %06x %4d %s [%s]\n",
$wo_id,
$sample->{lat}|| 0,
$sample->{lon}|| 0,
$sample->{ele} || 0,
$sample->{hr} || 0,
$sample->{addr},
$sample->{id},
$sample->{dump},
$sample->{type} == 0x00 ? 'fix' : ''
);
}
printf ( $fh_decode " f %s\n", $entry->{next_bytes});
}
}
$wo_id ++;
}
}
else {
print $fh_decode $parsed->{wos} . "\n";
}
close($fh_decode);
}
return $parsed;
}
sub save_tcx {
#http://www8.garmin.com/xmlschemas/TrainingCenterDatabasev2.xsd
my ($parsed, $fn) = @_;
my $output = IO::File->new(">$fn");
my $ns_def = "http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2";
my $xml = XML::Writer->new(
OUTPUT => $output,
NAMESPACES => 1,
DATA_MODE => 1,
DATA_INDENT => ' ',
FORCED_NS_DECLS => [ $ns_def ],
PREFIX_MAP => {
$ns_def => '',
"http://www.w3.org/2001/XMLSchema-instance" => 'xsi'
}
);
$xml->xmlDecl();
$xml->startTag('TrainingCenterDatabase');
$xml->startTag('Activities');
{
my $i = 0;
if (ref $parsed->{wos} eq "ARRAY") {
foreach my $wo (@{$parsed->{wos}}) {
$i ++;
$xml->startTag('Activity', Sport=> 'Other');
$xml->dataElement(Id => $wo->{start_time});
$xml->startTag('Lap', StartTime => $wo->{start_time});
$xml->dataElement(TotalTimeSeconds => 0);
$xml->dataElement(DistanceMeters => 0);
$xml->dataElement(Calories => int($wo->{calories}));
$xml->dataElement(Intensity => 'Active');
$xml->dataElement(TriggerMethod => 'Manual');
$xml->startTag('Track');
my $entry = $wo->{samples};
if (!$entry->{is_first}) {
my $has_initial_fix = 0;
my $lat = 0;
my $lon = 0;
my $ele = 0;
my $timestamp = 0;
foreach my $sample (@{$entry->{samples}}){
my $write = 0;
if ($sample->{type} == 0x00) {
$has_initial_fix = 1;
$lat = $sample->{lat};
$lon = $sample->{lon};
$ele = $sample->{ele};
$timestamp = $sample->{timestamp};
$write = 1;
}
elsif ($sample->{type} == 0x01) {
$lat += $sample->{lat};
$lon += $sample->{lon};
$ele += $sample->{ele};
$timestamp =~ s/..:..Z$/$sample->{timestamp}Z/;
$write = 1 && $has_initial_fix;
}
elsif ($sample->{type} == 0x02) {
$timestamp =~ s/..:..Z$/$sample->{timestamp}Z/;
}
elsif ($sample->{type} == 0x03 || $sample->{type} == 0x80) {
$timestamp = $sample->{timestamp};
}
$xml->startTag('Trackpoint');
$xml->dataElement(Time => $timestamp);
if ($write) {
$xml->startTag('Position');
$xml->dataElement(LatitudeDegrees=>format_lon_lat($lat));
$xml->dataElement(LongitudeDegrees=>format_lon_lat($lon));
$xml->endTag('Position');
$xml->dataElement(AltitudeMeters=>$ele);
}
if (defined $sample->{hr} && $sample->{hr} != 0) {
$xml->startTag('HeartRateBpm');
$xml->dataElement(Value => $sample->{hr});
$xml->endTag('HeartRateBpm');
}
$xml->endTag('Trackpoint');
}
}
$xml->endTag('Track');
$xml->dataElement(Notes => 'created track');
$xml->endTag('Lap');
$xml->dataElement(Notes => 'created lap');
$xml->endTag('Activity');
}
}
else {
$xml->comment("no data included in memdump");
}
}
$xml->endTag('Activities');
$xml->endTag('TrainingCenterDatabase');
$xml->end();
$output->close();
}
sub save_gpx {
# gpx files do not allow to add trackpoints without position.
# this means: it is impossible to create proper gpx's with the hometrainer:
# heartrate without gps
my ($parsed, $fn) = @_;
my $output = IO::File->new(">$fn");
my $ns_def = "http://www.topografix.com/GPX/1/1";
my $ns_gpxtpx="http://www.garmin.com/xmlschemas/TrackPointExtension/v1";
my $xml = XML::Writer->new(
OUTPUT => $output,
NAMESPACES => 1,
DATA_MODE => 1,
DATA_INDENT => ' ',
FORCED_NS_DECLS => [ $ns_gpxtpx, $ns_def ],
PREFIX_MAP => {
$ns_def => '',
$ns_gpxtpx => 'gpxtpx',
"http://www.garmin.com/xmlschemas/GpxExtensions/v3" => 'gpxx',
"http://www.w3.org/2001/XMLSchema-instance" => 'xsi'
}
);
$xml->xmlDecl();
$xml->startTag('gpx', creator => "gpswatch", version => "1.1");
$xml->startTag('metadata');
$xml->dataElement(name => "GPS Track from Crane GPS Watch");
$xml->startTag('author');
$xml->dataElement('email'=>'', id => 'mru', domain => 'sisyphus.teil.cc');
$xml->endTag('author');
$xml->startTag('copyright', author => '[email protected]');
$xml->dataElement(year => 2014);
$xml->dataElement(license => 'beer license');
$xml->endTag('copyright');
$xml->endTag('metadata');
{
my $i = 0;
if (ref $parsed->{wos} eq "ARRAY") {
foreach my $wo (@{$parsed->{wos}}) {
$i ++;
$xml->startTag('trk');
$xml->dataElement(name => $wo->{start_time});
$xml->dataElement(cmt=> '');
$xml->dataElement(desc => $parsed->{profiles}->[$wo->{profile}]);
$xml->dataElement(src => 'gps watch');
$xml->dataElement(number => $i);
$xml->dataElement(type => $parsed->{profiles}->[$wo->{profile}]);
$xml->startTag('trkseg');
my $entry = $wo->{samples};
if (!$entry->{is_first}) {
my $has_initial_fix = 0;
my $lat = 0;
my $lon = 0;
my $ele = 0;
my $timestamp = 0;
foreach my $sample (@{$entry->{samples}}){
my $write = 0;
if ($sample->{type} == 0x00) {
$has_initial_fix = 1;
$lat = $sample->{lat};
$lon = $sample->{lon};
$ele = $sample->{ele};
$timestamp = $sample->{timestamp};
$write = 1;
}
elsif ($sample->{type} == 0x01) {
$lat += $sample->{lat};
$lon += $sample->{lon};
$ele += $sample->{ele};
$timestamp =~ s/..:..Z$/$sample->{timestamp}Z/;
$write = 1 && $has_initial_fix;
}
elsif ($sample->{type} == 0x02) {
$timestamp =~ s/..:..Z$/$sample->{timestamp}Z/;
}
elsif ($sample->{type} == 0x03 || $sample->{type} == 0x80) {
$timestamp = $sample->{timestamp};
}
if ($write) {
$xml->startTag('trkpt', lat => format_lon_lat($lat), lon => format_lon_lat($lon));
$xml->dataElement(ele=>$ele);
$xml->dataElement(time => $timestamp);
}
else {
# this is wrong (according to the xsd):
$xml->startTag('trkpt', lat => 0, lon => 0);
$xml->dataElement(fix=>"none");
}
if (defined $sample->{hr} && $sample->{hr} != 0) {
$xml->startTag('extensions');
$xml->startTag([$ns_gpxtpx=>'TrackPointExtension']);
$xml->dataElement([$ns_gpxtpx=>'hr'], $sample->{hr});
$xml->endTag();
$xml->endTag('extensions');
}
$xml->endTag('trkpt');
}
}
$xml->endTag('trkseg');
$xml->endTag('trk');
}
}
else {
$xml->comment("no data included in memdump");
}
}
$xml->endTag('gpx');
$xml->end();
$output->close();
}
foreach my $fn (@ARGV) {
open(my $fh, '<', $fn) or die "failed to open file $!";
binmode($fh);
local $/;
my $data_file = <$fh>;
close($fh);
print STDERR $fn . "\n";
my $data = GpsWatch::hex_to_intarray(unpack('H*',$data_file));
eval {
my $result = parse_file($data, $fn);
save_gpx($result, $fn.".gpx");
save_tcx($result, $fn.".tcx");
1;
};
if ($@) {
warn "failed to parse file $fn: $@\n\n";
};
}