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author | Anton Tananaev <anton.tananaev@gmail.com> | 2018-07-10 22:17:59 +0300 |
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committer | Anton Tananaev <anton.tananaev@gmail.com> | 2018-07-10 22:17:59 +0300 |
commit | 9d26d56e297f7bdd147cb702a75d78584d7db6ec (patch) | |
tree | f911c67457ae38bcb1805de774367588c14cec96 /src/org/traccar/protocol/ContinentalProtocolDecoder.java | |
parent | 5603d7bc03d9378fd647992c4b05941c83c080ab (diff) | |
download | traccar-server-9d26d56e297f7bdd147cb702a75d78584d7db6ec.tar.gz traccar-server-9d26d56e297f7bdd147cb702a75d78584d7db6ec.tar.bz2 traccar-server-9d26d56e297f7bdd147cb702a75d78584d7db6ec.zip |
Support Continental extended precision
Diffstat (limited to 'src/org/traccar/protocol/ContinentalProtocolDecoder.java')
-rw-r--r-- | src/org/traccar/protocol/ContinentalProtocolDecoder.java | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/src/org/traccar/protocol/ContinentalProtocolDecoder.java b/src/org/traccar/protocol/ContinentalProtocolDecoder.java index 20134fc1f..b8f322dc6 100644 --- a/src/org/traccar/protocol/ContinentalProtocolDecoder.java +++ b/src/org/traccar/protocol/ContinentalProtocolDecoder.java @@ -37,6 +37,14 @@ public class ContinentalProtocolDecoder extends BaseProtocolDecoder { public static final int MSG_ACK = 0x06; public static final int MSG_NACK = 0x15; + private double readCoordinate(ByteBuf buf, boolean extended) { + long value = buf.readUnsignedInt(); + if (extended ? (value & 0x08000000) != 0 : (value & 0x00800000) != 0) { + value |= extended ? 0xF0000000 : 0xFF000000; + } + return (int) value / (extended ? 360000.0 : 3600.0); + } + @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { @@ -64,11 +72,9 @@ public class ContinentalProtocolDecoder extends BaseProtocolDecoder { position.setFixTime(new Date(buf.readUnsignedInt() * 1000L)); - buf.readUnsignedByte(); - position.setLatitude(buf.readMedium() / 3600.0); - - buf.readUnsignedByte(); - position.setLongitude(buf.readMedium() / 3600.0); + boolean extended = buf.getUnsignedByte(buf.readerIndex()) != 0; + position.setLatitude(readCoordinate(buf, extended)); + position.setLongitude(readCoordinate(buf, extended)); position.setCourse(buf.readUnsignedShort()); position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort())); |