Decode G6W audio format

2 files changed, 43 insertions, 8 deletions

diff --git a/src/main/java/org/traccar/helper/BufferUtil.java b/src/main/java/org/traccar/helper/BufferUtil.java
index 9485c17c6..1e1a687fa 100644
--- a/src/main/java/org/traccar/helper/BufferUtil.java
+++ b/src/main/java/org/traccar/helper/BufferUtil.java
@@ -27,6 +27,18 @@ public final class BufferUtil {
     private BufferUtil() {
     }
 
+    public static int indexOf(ByteBuf buffer, int fromIndex, int toIndex, byte value, int count) {
+        int startIndex = fromIndex;
+        for (int i = 0; i < count; i++) {
+            int result = buffer.indexOf(startIndex, toIndex, value);
+            if (result < 0 || i == count - 1) {
+                return result;
+            }
+            startIndex = result + 1;
+        }
+        return -1;
+    }
+
     public static int indexOf(String needle, ByteBuf haystack) {
         return indexOf(needle, haystack, haystack.readerIndex(), haystack.writerIndex());
     }
diff --git a/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java b/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java
index b25a15f93..420866578 100644
--- a/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java
+++ b/src/main/java/org/traccar/protocol/WatchProtocolDecoder.java
@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 - 2021 Anton Tananaev (anton@traccar.org)
+ * Copyright 2015 - 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.
@@ -18,14 +18,13 @@ package org.traccar.protocol;
 import io.netty.buffer.ByteBuf;
 import io.netty.buffer.Unpooled;
 import io.netty.channel.Channel;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
 import org.traccar.BaseProtocolDecoder;
 import org.traccar.Context;
 import org.traccar.DeviceSession;
 import org.traccar.NetworkMessage;
 import org.traccar.Protocol;
 import org.traccar.helper.BitUtil;
+import org.traccar.helper.BufferUtil;
 import org.traccar.helper.Parser;
 import org.traccar.helper.PatternBuilder;
 import org.traccar.helper.UnitsConverter;
@@ -41,7 +40,7 @@ import java.util.regex.Pattern;
 
 public class WatchProtocolDecoder extends BaseProtocolDecoder {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(WatchProtocolDecoder.class);
+    private ByteBuf audio;
 
     public WatchProtocolDecoder(Protocol protocol) {
         super(protocol);
@@ -318,13 +317,37 @@ public class WatchProtocolDecoder extends BaseProtocolDecoder {
 
             return position;
 
+        } else if (type.equals("JXTK")) {
+
+            int dataIndex = BufferUtil.indexOf(buf, buf.readerIndex(), buf.writerIndex(), (byte) ',', 4) + 1;
+            String[] values = buf.readCharSequence(
+                    dataIndex - buf.readerIndex(), StandardCharsets.US_ASCII).toString().split(",");
+
+            int current = Integer.parseInt(values[2]);
+            int total = Integer.parseInt(values[3]);
+
+            if (audio == null) {
+                audio = Unpooled.buffer();
+            }
+            audio.writeBytes(buf);
+
+            sendResponse(channel, id, index, "JXTKR,1");
+
+            if (current < total) {
+                return null;
+            } else {
+                Position position = new Position(getProtocolName());
+                position.setDeviceId(deviceSession.getDeviceId());
+                getLastLocation(position, null);
+                position.set(Position.KEY_AUDIO, Context.getMediaManager().writeFile(id, audio, "amr"));
+                audio.release();
+                audio = null;
+                return position;
+            }
+
         } else if (type.equals("TK")) {
 
             if (buf.readableBytes() == 1) {
-                byte result = buf.readByte();
-                if (result != '1') {
-                    LOGGER.warn(type + "," + result);
-                }
                 return null;
             }