From aed0411f4ae5cfc007d27e0521a39a242fab7840 Mon Sep 17 00:00:00 2001 From: Anton Tananaev Date: Wed, 29 Jun 2022 17:03:23 -0700 Subject: Unify signed magnitude int decoding --- src/main/java/org/traccar/protocol/NiotProtocolDecoder.java | 11 +++-------- 1 file changed, 3 insertions(+), 8 deletions(-) (limited to 'src/main/java/org/traccar/protocol/NiotProtocolDecoder.java') diff --git a/src/main/java/org/traccar/protocol/NiotProtocolDecoder.java b/src/main/java/org/traccar/protocol/NiotProtocolDecoder.java index 16d992938..35614ccca 100644 --- a/src/main/java/org/traccar/protocol/NiotProtocolDecoder.java +++ b/src/main/java/org/traccar/protocol/NiotProtocolDecoder.java @@ -20,6 +20,7 @@ import io.netty.buffer.ByteBufUtil; import io.netty.buffer.Unpooled; import io.netty.channel.Channel; import org.traccar.BaseProtocolDecoder; +import org.traccar.helper.BufferUtil; import org.traccar.session.DeviceSession; import org.traccar.NetworkMessage; import org.traccar.Protocol; @@ -57,12 +58,6 @@ public class NiotProtocolDecoder extends BaseProtocolDecoder { } } - private double readCoordinate(ByteBuf buf) { - long value = buf.readUnsignedInt(); - double result = BitUtil.to(value, 31) / 1800000.0; - return BitUtil.check(value, 31) ? -result : result; - } - @Override protected Object decode( Channel channel, SocketAddress remoteAddress, Object msg) throws Exception { @@ -96,8 +91,8 @@ public class NiotProtocolDecoder extends BaseProtocolDecoder { .setSecond(BcdUtil.readInteger(buf, 2)); position.setTime(dateBuilder.getDate()); - position.setLatitude(readCoordinate(buf)); - position.setLongitude(readCoordinate(buf)); + position.setLatitude(BufferUtil.readSignedMagnitudeInt(buf) / 1800000.0); + position.setLongitude(BufferUtil.readSignedMagnitudeInt(buf) / 1800000.0); BcdUtil.readInteger(buf, 4); // reserved position.setCourse(BcdUtil.readInteger(buf, 4)); -- cgit v1.2.3