From ca2cca9355c3b36b2e7ed9ad808db797fa94cb78 Mon Sep 17 00:00:00 2001
From: Anton Tananaev <anton.tananaev@gmail.com>
Date: Wed, 16 Jan 2019 21:40:38 -0800
Subject: Support 105B and 103B photos

---
 .../traccar/protocol/Gps103ProtocolDecoder.java    | 47 +++++++++++++++++++++-
 1 file changed, 46 insertions(+), 1 deletion(-)

(limited to 'src/org/traccar/protocol/Gps103ProtocolDecoder.java')

diff --git a/src/org/traccar/protocol/Gps103ProtocolDecoder.java b/src/org/traccar/protocol/Gps103ProtocolDecoder.java
index 1fbae15ce..27b94739b 100644
--- a/src/org/traccar/protocol/Gps103ProtocolDecoder.java
+++ b/src/org/traccar/protocol/Gps103ProtocolDecoder.java
@@ -15,11 +15,15 @@
  */
 package org.traccar.protocol;
 
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
 import io.netty.channel.Channel;
 import org.traccar.BaseProtocolDecoder;
+import org.traccar.Context;
 import org.traccar.DeviceSession;
 import org.traccar.NetworkMessage;
 import org.traccar.Protocol;
+import org.traccar.helper.DataConverter;
 import org.traccar.helper.DateBuilder;
 import org.traccar.helper.Parser;
 import org.traccar.helper.PatternBuilder;
@@ -34,6 +38,9 @@ import java.util.regex.Pattern;
 
 public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
 
+    private int photoPackets = 0;
+    private ByteBuf photo;
+
     public Gps103ProtocolDecoder(Protocol protocol) {
         super(protocol);
     }
@@ -190,6 +197,9 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
             if (channel != null) {
                 channel.writeAndFlush(new NetworkMessage("**,imei:" + imei + ",E;", remoteAddress));
             }
+        } else if (alarm.startsWith("vt")) {
+            photoPackets = Integer.parseInt(alarm.substring(2));
+            photo = Unpooled.buffer();
         } else if (alarm.equals("acc on")) {
             position.set(Position.KEY_IGNITION, true);
         } else if (alarm.equals("acc off")) {
@@ -336,6 +346,39 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
         return position;
     }
 
+    private Position decodePhoto(Channel channel, SocketAddress remoteAddress, String sentence) {
+
+        String imei = sentence.substring(5, 5 + 15);
+        DeviceSession deviceSession = getDeviceSession(channel, remoteAddress, imei);
+        if (deviceSession == null) {
+            return null;
+        }
+
+        ByteBuf buf = Unpooled.wrappedBuffer(DataConverter.parseHex(
+                sentence.substring(24, sentence.endsWith(";") ? sentence.length() - 1 : sentence.length())));
+        int index = buf.readUnsignedShortLE();
+        photo.writeBytes(buf, buf.readerIndex() + 2, buf.readableBytes() - 4);
+
+        if (index + 1 >= photoPackets) {
+            Position position = new Position(getProtocolName());
+            position.setDeviceId(deviceSession.getDeviceId());
+
+            getLastLocation(position, null);
+
+            try {
+                position.set(Position.KEY_IMAGE, Context.getMediaManager().writeFile(imei, photo, "jpg"));
+            } finally {
+                photoPackets = 0;
+                photo.release();
+                photo = null;
+            }
+
+            return position;
+        } else {
+            return null;
+        }
+    }
+
     @Override
     protected Object decode(
             Channel channel, SocketAddress remoteAddress, Object msg) throws Exception {
@@ -365,7 +408,9 @@ public class Gps103ProtocolDecoder extends BaseProtocolDecoder {
             }
         }
 
-        if (sentence.contains("OBD")) {
+        if (sentence.substring(21, 21 + 2).equals("vr")) {
+            return decodePhoto(channel, remoteAddress, sentence);
+        } else if (sentence.substring(21, 21 + 3).contains("OBD")) {
             return decodeObd(channel, remoteAddress, sentence);
         } else if (sentence.endsWith("*")) {
             return decodeAlternative(channel, remoteAddress, sentence);
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