- my @bytes = unpack("C*", $data);
-
- push @{ $self->{bytes} }, @bytes;
- @bytes = @{ $self->{bytes} };
-
- my @bad_bytes;
-
- while (@bytes > $PACKET_SIZE) {
- if ($bytes[0] != 0x55) {
- push @bad_bytes, shift @bytes;
- next;
- }
- my $cmd = $bytes[1];
-
- if ($bytes[$PACKET_SIZE] != 0x05
- || SCX::CRC::digest(@bytes[0..$PACKET_SIZE-2])
- != $bytes[$PACKET_SIZE-1]) {
- push @bad_bytes, shift @bytes;
- next;
- }
-
- if (@bad_bytes) { # Report previous bad bytes first
- $self->log_bytes(\@bad_bytes, "Cannot parse packet");
- @bad_bytes = ();
- }
-
- my @packet = splice @bytes, 0, $PACKET_SIZE+1;
- my $rv = &{ $self->{callback} }(@packet);
- $self->log_bytes(@packet, $rv);
- }
- $self->log_bad_bytes(\@bad_bytes, "Cannot parse packet");
-
- @{ $self->{bytes} } = @bytes;
-}
-
-sub log_bytes {
- my ($self, $bytes, $msg) = @_;
-
- return if !@$bytes;
-
- $msg = defined $msg ? ' # ' . $msg : '';
-
- my $now = gettimeofday;
-
- if ($now - $self->{log_start} >= $LOG_ROTATE) {
- close $self->{logfh};
- $self->{log_gen} = $self->{log_gen} ? 0 : 1;
- open my $fh, '>', $logfile . '.' . $self->{log_gen}
- or die "Can't open $logfile.$self->{log_gen}: $!";
- $self->{logfh} = $fh;
- $self->{log_start} = $now;
- }
-
- $self->{logfh}->print(sprintf('% 10.3f', $now - $self->{starttime}),
- (map { sprintf(" %02x", $_) } @$bytes),
- $msg, "\n");
-}
-
-our %COMMANDS = (
- 0xAA => \&bus_free_time_packet,
- 0xCC => \&car_programming_packet,
- 0xD0 => \&reset_packet,
- 0xD3 => \&standings_packet,
- 0xD4 => \&lap_time_packet,
- 0xD5 => \&race_setup_packet,
- 0xD6 => \&fuel_level_packet,
- 0xD7 => \&brake_set_packet,
- 0xDB => \&qualification_packet,
- 0xDC => \&end_of_race_packet,
- 0xDD => \&race_start_packet,
- 0xDE => \&display_change_packet,
- 0xEE => \&finish_line_packet,
- 0xFF => \&controller_status_packet,
-);
-
-sub handle_packet {
- my ($self, @data) = @_;
-
- my $cmd = $data[1];
- my @args = $data[2..7];
-
- my $sub = $COMMANDS{$cmd};
- return "Unknown packet"
- if !defined $sub;
-
- return &$sub($self, @args);
-}
-
-sub bus_free_time_packet {
- my ($self, @bytes) = @_;
-
- my $msg = 'Strange bus free time packet'
- if $bytes[2] != 0xF0
- || $bytes[3] != 0xF0
- || $bytes[4] != 0xF0
- || $bytes[5] != 0xF0;
-
- return $msg; # No need to handle this, I think
-}
-
-sub car_programming_packet {
- my ($self, @bytes) = @_;
-
- my $msg = 'Strange car programming packet'
- if $bytes[0] & 0xF8 != 0 || $bytes[0] & 0x07 > 5
- || $bytes[1] != 0xFE
- || $bytes[2] != 0xFF
- || $bytes[3] != 0xFF
- || $bytes[4] != 0xFF
- || $bytes[5] != 0xFF;
-
- return $msg;
-}
-
-sub reset_packet {
- my ($self, @bytes) = @_;
-
- my $msg = 'Strange reset packet'
- if $bytes[0] != 0xFF
- || $bytes[3] != 0xAA
- || $bytes[4] != 0xAA
- || $bytes[5] != 0xAA;
-
- return $msg; # FIXME - to be implemented
-}
-
-sub standings_packet {
- my ($self, @bytes) = @_;
-
- my $msg = 'Strange standings packet'
- if $bytes[0] & 0x07 > 5
- || $bytes[1] & 0x07 > 5
- || $bytes[2] & 0x07 > 5
- || $bytes[3] & 0x07 > 5
- || $bytes[4] & 0x07 > 5
- || $bytes[5] & 0x07 > 5;
-
- return $msg; # FIXME - to be implemented
-}
-
-sub lap_time_packet {
- my ($self, @bytes) = @_;
-
- my $msg = 'Strange lap time packet'
- if $bytes[0] > 5
- || $bytes[1] & 0x01
- || $bytes[2] & 0x01
- || $bytes[3] & 0xF8 != 0
- || $bytes[4] & 0x01
- || $bytes[5] & 0x01;
-
- return $msg; # FIXME - to be implemented
-}
-
-
-sub race_setup_packet {
- my ($self, @bytes) = @_;
-
- my $msg = 'Strange race setup packet'
- if ($bytes[0] != 0x00 && $bytes[0] != 0xFF)
- || $bytes[1] & 0xF0
- || $bytes[2] & 0xF0
- || $bytes[3] & 0xF0
- || $bytes[4] != 0xFF
- || $bytes[5] != 0xFF;
-
- return $msg; # FIXME - to be implemented
-}
-
-
-sub fuel_level_packet {
- my ($self, @bytes) = @_;
-
- my $msg = 'Strange fuel_level packet'
- if ($bytes[0] >> 4) > 8
- || $bytes[0] & 0x0F > 8
- || ($bytes[1] >> 4) > 8
- || $bytes[1] & 0x0F > 8
- || ($bytes[2] >> 4) > 8
- || $bytes[2] & 0x0F > 8
- || ($bytes[5] != 0xAA && $bytes[5] != 0xFF);
-
-=comment
- my @fuel = (0,
- $data[1] >> 4, $data[1] & 0x0f,
- $data[2] >> 4, $data[2] & 0x0f,
- $data[3] >> 4, $data[3] & 0x0f,
- );
- for my $car (1..6) {
- next if defined $controllers[$car-1]
- &&$controllers[$car-1] == $fuel[$car];
-
- my $progressbar = $builder->get_object(
- 'progressbar_fuel'.$car);
- $progressbar->set_fraction($fuel[$car]/8);
- }
-=cut
-
- return $msg; # FIXME - to be implemented
-}
-
-
-sub brake_set_packet {
- my ($self, @bytes) = @_;
-
- return 'Unexpected brake_set packet (should be in the pit lane only)';
-}
-
-
-sub qualification_packet {
- my ($self, @bytes) = @_;
-
- my $msg = 'Strange qualification packet'
- if $bytes[0] & 0xF0
- || $bytes[1] & 0xF0
- || $bytes[2] & 0xF0
- || $bytes[3] > 5
- || $bytes[4] != 0xFF
- || $bytes[5] != 0xFF;
-
- return $msg; # FIXME - to be implemented
-}
-
-
-sub end_of_race_packet {
- my ($self, @bytes) = @_;
-
- my $msg = 'Strange end_of_race packet'
- if $bytes[0] != 0xFF
- || $bytes[1] != 0xFF
- || $bytes[2] != 0xFF
- || $bytes[3] != 0xFF
- || $bytes[4] != 0xFF
- || $bytes[5] != 0xFF;
-
- return $msg; # FIXME - to be implemented
-}