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Diffstat (limited to 'src/main/java/org/traccar/protocol/RecodaProtocolDecoder.java')
-rw-r--r--src/main/java/org/traccar/protocol/RecodaProtocolDecoder.java110
1 files changed, 110 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/RecodaProtocolDecoder.java b/src/main/java/org/traccar/protocol/RecodaProtocolDecoder.java
new file mode 100644
index 000000000..04098225f
--- /dev/null
+++ b/src/main/java/org/traccar/protocol/RecodaProtocolDecoder.java
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2017 - 2018 Anton Tananaev (anton@traccar.org)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.traccar.protocol;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.DeviceSession;
+import org.traccar.Protocol;
+import org.traccar.helper.BitUtil;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Position;
+
+import java.net.SocketAddress;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+
+public class RecodaProtocolDecoder extends BaseProtocolDecoder {
+
+ public RecodaProtocolDecoder(Protocol protocol) {
+ super(protocol);
+ }
+
+ public static final int MSG_HEARTBEAT = 0x00001001;
+ public static final int MSG_REQUEST_RESPONSE = 0x20000001;
+ public static final int MSG_SIGNAL_LINK_REGISTRATION = 0x20001001;
+ public static final int MSG_EVENT_NOTICE = 0x20002001;
+ public static final int MSG_GPS_DATA = 0x20001011;
+
+ @Override
+ protected Object decode(
+ Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
+
+ ByteBuf buf = (ByteBuf) msg;
+
+ int type = buf.readIntLE();
+ buf.readUnsignedIntLE(); // length
+
+ if (type != MSG_HEARTBEAT) {
+ buf.readUnsignedShortLE(); // version
+ buf.readUnsignedShortLE(); // index
+ }
+
+ if (type == MSG_SIGNAL_LINK_REGISTRATION) {
+
+ getDeviceSession(channel, remoteAddress, buf.readSlice(12).toString(StandardCharsets.US_ASCII));
+
+ } else if (type == MSG_GPS_DATA) {
+
+ DeviceSession deviceSession = getDeviceSession(channel, remoteAddress);
+ if (deviceSession == null) {
+ return null;
+ }
+
+ Position position = new Position(getProtocolName());
+ position.setDeviceId(deviceSession.getDeviceId());
+
+ position.setTime(new Date(buf.readLongLE()));
+
+ int flags = buf.readUnsignedByte();
+
+ if (BitUtil.check(flags, 0)) {
+
+ buf.readUnsignedShortLE(); // declination
+
+ position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShortLE()));
+
+ position.setLongitude(buf.readUnsignedByte() + buf.readUnsignedByte() / 60.0);
+ position.setLatitude(buf.readUnsignedByte() + buf.readUnsignedByte() / 60.0);
+
+ position.setLongitude(position.getLongitude() + buf.readUnsignedIntLE() / 3600.0);
+ position.setLatitude(position.getLatitude() + buf.readUnsignedIntLE() / 3600.0);
+
+ int status = buf.readUnsignedByte();
+
+ position.setValid(BitUtil.check(status, 0));
+ if (BitUtil.check(status, 1)) {
+ position.setLongitude(-position.getLongitude());
+ }
+ if (!BitUtil.check(status, 2)) {
+ position.setLatitude(-position.getLatitude());
+ }
+
+ } else {
+
+ getLastLocation(position, position.getDeviceTime());
+
+ }
+
+ return position;
+
+ }
+
+ return null;
+ }
+
+}