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author | Yuriy Piskarev <yuriy.piskarev@gmail.com> | 2023-08-24 14:16:17 +0300 |
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committer | GitHub <noreply@github.com> | 2023-08-24 14:16:17 +0300 |
commit | ae406c7b49a72de24d81fd74386d9638342c90ee (patch) | |
tree | 6fbcf557375b98e926c78af9c757e62c79d72a1b /src/main/java/org/traccar/protocol/G1rusFrameDecoder.java | |
parent | 56ff656c908b19feb2fa3dcffa48cc3bcdfe9b3b (diff) | |
parent | 9aeedc90da24848ff97227d6f281eb4d1e1506ef (diff) | |
download | trackermap-server-ae406c7b49a72de24d81fd74386d9638342c90ee.tar.gz trackermap-server-ae406c7b49a72de24d81fd74386d9638342c90ee.tar.bz2 trackermap-server-ae406c7b49a72de24d81fd74386d9638342c90ee.zip |
Merge branch 'traccar:master' into master
Diffstat (limited to 'src/main/java/org/traccar/protocol/G1rusFrameDecoder.java')
-rw-r--r-- | src/main/java/org/traccar/protocol/G1rusFrameDecoder.java | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/main/java/org/traccar/protocol/G1rusFrameDecoder.java b/src/main/java/org/traccar/protocol/G1rusFrameDecoder.java new file mode 100644 index 000000000..8c67207ad --- /dev/null +++ b/src/main/java/org/traccar/protocol/G1rusFrameDecoder.java @@ -0,0 +1,49 @@ +/* + * Copyright 2022 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.buffer.Unpooled; +import io.netty.channel.Channel; +import io.netty.channel.ChannelHandlerContext; +import org.traccar.BaseFrameDecoder; + +public class G1rusFrameDecoder extends BaseFrameDecoder { + + @Override + protected Object decode( + ChannelHandlerContext ctx, Channel channel, ByteBuf buf) throws Exception { + + ByteBuf result = Unpooled.buffer(); + + while (buf.isReadable()) { + int b = buf.readUnsignedByte(); + if (b == 0x1B) { + int ext = buf.readUnsignedByte(); + if (ext == 0x00) { + result.writeByte(0x1B); + } else { + result.writeByte(0xF8); + } + } else { + result.writeByte(b); + } + } + + return result; + } + +} |