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authorAnton Tananaev <anton.tananaev@gmail.com>2015-06-23 14:04:52 +1200
committerAnton Tananaev <anton.tananaev@gmail.com>2015-06-23 14:04:52 +1200
commit67e2c8f8e0f8753e919e653fc2bca9cfb9939ff2 (patch)
tree0c62a9666bd5fd23e0fa2080b5bd56a876a2c9d1 /src/org/traccar/protocol
parentec7b47684c89264f4347f2601a83d602162cb817 (diff)
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Start MXT protocol implementation
Diffstat (limited to 'src/org/traccar/protocol')
-rw-r--r--src/org/traccar/protocol/MxtFrameDecoder.java55
-rw-r--r--src/org/traccar/protocol/MxtProtocolDecoder.java93
2 files changed, 148 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/MxtFrameDecoder.java b/src/org/traccar/protocol/MxtFrameDecoder.java
new file mode 100644
index 000000000..82aa5c91a
--- /dev/null
+++ b/src/org/traccar/protocol/MxtFrameDecoder.java
@@ -0,0 +1,55 @@
+/*
+ * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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 org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.buffer.ChannelBuffers;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.handler.codec.frame.FrameDecoder;
+
+public class MxtFrameDecoder extends FrameDecoder {
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx,
+ Channel channel,
+ ChannelBuffer buf) throws Exception {
+
+ if (buf.readableBytes() < 2) {
+ return null;
+ }
+
+ int index = buf.indexOf(buf.readerIndex() + 1, buf.writerIndex(), (byte) 0x04);
+ if (index != -1) {
+ ChannelBuffer result = ChannelBuffers.buffer(index + 1 - buf.readerIndex());
+
+ while (buf.readerIndex() <= index) {
+ int b = buf.readUnsignedByte();
+ if (b == 0x10) {
+ result.writeByte(buf.readUnsignedByte() - 0x20);
+ } else {
+ result.writeByte(b);
+ }
+ }
+
+ return result;
+ }
+
+ return null;
+ }
+
+}
diff --git a/src/org/traccar/protocol/MxtProtocolDecoder.java b/src/org/traccar/protocol/MxtProtocolDecoder.java
new file mode 100644
index 000000000..014033be4
--- /dev/null
+++ b/src/org/traccar/protocol/MxtProtocolDecoder.java
@@ -0,0 +1,93 @@
+/*
+ * Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
+ *
+ * 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 org.jboss.netty.buffer.ChannelBuffer;
+import org.jboss.netty.channel.Channel;
+import org.jboss.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseProtocolDecoder;
+import org.traccar.helper.ChannelBufferTools;
+import org.traccar.helper.UnitsConverter;
+import org.traccar.model.Event;
+import org.traccar.model.Position;
+
+import java.util.Date;
+
+public class MxtProtocolDecoder extends BaseProtocolDecoder {
+
+ public MxtProtocolDecoder(String protocol) {
+ super(protocol);
+ }
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, Object msg)
+ throws Exception {
+
+ ChannelBuffer buf = (ChannelBuffer) msg;
+
+ /*buf.readByte(); // header
+ buf.readUnsignedByte(); // version
+ buf.readUnsignedByte(); // type
+
+ // Create new position
+ Position position = new Position();
+ position.setProtocol(getProtocol());
+
+ // Get device id
+ String imei = ChannelBufferTools.readHexString(buf, 16).substring(1);
+ if (!identify(imei)) {
+ return null;
+ }
+ position.setDeviceId(getDeviceId());
+
+ // Time
+ long seconds = buf.readUnsignedInt() & 0x7fffffffl;
+ seconds += 946684800l; // 2000-01-01 00:00
+ position.setTime(new Date(seconds * 1000));
+
+ boolean hasLocation = false;
+
+ while (buf.readableBytes() > 3) {
+
+ short type = buf.readUnsignedByte();
+ short length = buf.readUnsignedByte();
+
+ switch (type) {
+
+ case DATA_GPS:
+ hasLocation = true;
+ position.setValid(true);
+ position.setLatitude(buf.readInt() / 1000000.0);
+ position.setLongitude(buf.readInt() / 1000000.0);
+ position.setSpeed(UnitsConverter.knotsFromKph(buf.readUnsignedShort()));
+ position.setCourse(buf.readUnsignedShort());
+ position.set(Event.KEY_HDOP, buf.readUnsignedShort());
+ break;
+
+ default:
+ buf.skipBytes(length);
+ break;
+ }
+ }
+
+ if (hasLocation) {
+ return position;
+ }*/
+ return null;
+ }
+
+}