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authorAnton Tananaev <anton.tananaev@gmail.com>2018-07-14 23:43:23 +0300
committerAnton Tananaev <anton.tananaev@gmail.com>2018-07-14 23:43:23 +0300
commitab81b1434504d9ed288079f2cf0eb81aaffa668c (patch)
tree4a7270b07b5add7b16d04da85971304e8ea7ce69 /src/org/traccar/protocol/TekFrameDecoder.java
parentf421a3f7205966cc4359bc0e01ae5afbceb006fb (diff)
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Implement TEK733 protocol
Diffstat (limited to 'src/org/traccar/protocol/TekFrameDecoder.java')
-rw-r--r--src/org/traccar/protocol/TekFrameDecoder.java42
1 files changed, 42 insertions, 0 deletions
diff --git a/src/org/traccar/protocol/TekFrameDecoder.java b/src/org/traccar/protocol/TekFrameDecoder.java
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index 000000000..44d2c590e
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+++ b/src/org/traccar/protocol/TekFrameDecoder.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright 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 io.netty.channel.ChannelHandlerContext;
+import org.traccar.BaseFrameDecoder;
+import org.traccar.helper.BitUtil;
+
+public class TekFrameDecoder extends BaseFrameDecoder {
+
+ @Override
+ protected Object decode(
+ ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception {
+
+ if (buf.readableBytes() < 17) {
+ return null;
+ }
+
+ int length = 17 + buf.getUnsignedByte(16) + (BitUtil.from(buf.getUnsignedByte(15), 6) << 6);
+ if (buf.readableBytes() >= length) {
+ return buf.readBytes(length);
+ }
+
+ return null;
+ }
+
+}