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authorAnton Tananaev <anton@traccar.org>2022-08-16 17:39:55 -0700
committerAnton Tananaev <anton@traccar.org>2022-08-16 17:39:55 -0700
commita0e484704bd9b5e046a6940beb7450168b5188df (patch)
treee23585128d32a0c95f963ddf435f340ed11cb274 /src/main/java/org/traccar
parent18addfa5b5535dbf8d48c7bbfd01c7234e0154bf (diff)
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Decode minimal data set
Diffstat (limited to 'src/main/java/org/traccar')
-rw-r--r--src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java42
1 files changed, 31 insertions, 11 deletions
diff --git a/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java b/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java
index 1f6a4d2b4..fc8a49cf5 100644
--- a/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/GalileoProtocolDecoder.java
@@ -20,15 +20,16 @@ import io.netty.buffer.ByteBufUtil;
import io.netty.buffer.Unpooled;
import io.netty.channel.Channel;
import org.traccar.BaseProtocolDecoder;
-import org.traccar.helper.BitUtil;
-import org.traccar.session.DeviceSession;
import org.traccar.NetworkMessage;
import org.traccar.Protocol;
+import org.traccar.helper.BitBuffer;
import org.traccar.helper.UnitsConverter;
import org.traccar.model.Position;
+import org.traccar.session.DeviceSession;
import java.net.SocketAddress;
import java.nio.charset.StandardCharsets;
+import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.HashSet;
@@ -36,6 +37,7 @@ import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
+import java.util.TimeZone;
public class GalileoProtocolDecoder extends BaseProtocolDecoder {
@@ -242,6 +244,27 @@ public class GalileoProtocolDecoder extends BaseProtocolDecoder {
return null;
}
+ private void decodeMinimalDataSet(Position position, ByteBuf buf) {
+ BitBuffer bits = new BitBuffer(buf.readSlice(10));
+ bits.readUnsigned(1);
+
+ Calendar calendar = Calendar.getInstance(TimeZone.getTimeZone("UTC"));
+ calendar.set(Calendar.DAY_OF_YEAR, 1);
+ calendar.set(Calendar.HOUR_OF_DAY, calendar.getActualMinimum(Calendar.HOUR_OF_DAY));
+ calendar.set(Calendar.MINUTE, calendar.getActualMinimum(Calendar.MINUTE));
+ calendar.set(Calendar.SECOND, calendar.getActualMinimum(Calendar.SECOND));
+ calendar.set(Calendar.MILLISECOND, calendar.getActualMinimum(Calendar.MILLISECOND));
+ calendar.add(Calendar.SECOND, bits.readUnsigned(25));
+ position.setTime(calendar.getTime());
+
+ position.setValid(bits.readUnsigned(1) == 0);
+ position.setLongitude(360 * bits.readUnsigned(22) / 4194304.0 - 180);
+ position.setLatitude(360 * bits.readUnsigned(21) / 2097152.0 - 90);
+ if (bits.readUnsigned(1) > 0) {
+ position.set(Position.KEY_ALARM, Position.ALARM_GENERAL);
+ }
+ }
+
private Position decodeIridiumPosition(Channel channel, SocketAddress remoteAddress, ByteBuf buf) {
buf.readUnsignedShortLE(); // length
@@ -260,15 +283,12 @@ public class GalileoProtocolDecoder extends BaseProtocolDecoder {
buf.readUnsignedByte(); // session status
buf.skipBytes(4); // reserved
- position.setTime(new Date(buf.readUnsignedIntLE() * 1000));
-
- buf.skipBytes(2); // coordinates header
- int flags = buf.readUnsignedByte();
- double latitude = buf.readUnsignedByte() + buf.readUnsignedShortLE() / 60000.0;
- double longitude = buf.readUnsignedByte() + buf.readUnsignedShortLE() / 60000.0;
- position.setLatitude(BitUtil.check(flags, 1) ? -latitude : latitude);
- position.setLongitude(BitUtil.check(flags, 0) ? -longitude : longitude);
- position.setAccuracy(buf.readUnsignedIntLE());
+ buf.readUnsignedIntLE(); // date and time
+
+ buf.skipBytes(23); // coordinates block
+
+ buf.skipBytes(3); // data tag header
+ decodeMinimalDataSet(position, buf);
return position;
}