#1799 DMR Cap+ & CapMax now track events correctly. Updated Cap+ events to include channel descriptor and frequencies. Corrected Capacity Max talker aliases to combine base and continuation alias fragments into a unified alias identifier. (#1801)

Critical: resolved a thread deadlock issue when the DMR multi-frequency channel rotation thread deadlocks against the UI thread when accessing the current channel's frequency from the frequency controller.  This thread deadlock may be the source of multiple users reporting OutOfMemory crashes when running any DMR channel with multiple control frequencies where the decoder was rolling through each frequency checking for activity.

Co-authored-by: Dennis Sheirer <[email protected]>

Author: DSheirer

src/main/java/io/github/dsheirer/controller/channel/ChannelProcessingManager.java

@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -442,7 +442,7 @@ else if(request.hasChildDecodeEventHistory())
 
         /* Processing Modules */
         List<Module> modules = DecoderFactory.getModules(mChannelMapModel, channel, mAliasModel, mUserPreferences,
-            request.getTrafficChannelManager());
+            request.getTrafficChannelManager(), request.getChannelDescriptor());
         processingChain.addModules(modules);
 
         //Post preload data from the request to the event bus.  Modules that can handle preload data will annotate

src/main/java/io/github/dsheirer/identifier/Form.java

@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -54,7 +54,6 @@ public enum Form
     STATE,
     SYSTEM,
     TALKER_ALIAS,
-    TALKER_ALIAS_2,
     TALKGROUP,
     TELEPHONE_NUMBER,
     TONE,

src/main/java/io/github/dsheirer/identifier/alias/DmrTalkerAlias2Identifier.java

@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
+ * Copyright (C) 2014-2024 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -23,6 +23,7 @@
 import io.github.dsheirer.alias.action.AliasActionManager;
 import io.github.dsheirer.audio.AbstractAudioModule;
 import io.github.dsheirer.audio.AudioModule;
+import io.github.dsheirer.channel.IChannelDescriptor;
 import io.github.dsheirer.channel.state.State;
 import io.github.dsheirer.controller.channel.Channel;
 import io.github.dsheirer.controller.channel.Channel.ChannelType;
@@ -48,7 +49,8 @@
 import io.github.dsheirer.module.decode.dmr.DecodeConfigDMR;
 import io.github.dsheirer.module.decode.dmr.audio.DMRAudioModule;
 import io.github.dsheirer.module.decode.dmr.channel.DMRChannel;
-import io.github.dsheirer.module.decode.dmr.channel.DMRTier3Channel;
+import io.github.dsheirer.module.decode.dmr.channel.DMRLsn;
+import io.github.dsheirer.module.decode.dmr.channel.DmrRestLsn;
 import io.github.dsheirer.module.decode.dmr.message.filter.DmrMessageFilterSet;
 import io.github.dsheirer.module.decode.event.DecodeEvent;
 import io.github.dsheirer.module.decode.fleetsync2.Fleetsync2Decoder;
@@ -123,9 +125,11 @@ public class DecoderFactory
      * @return list of configured decoders
      */
     public static List<Module> getModules(ChannelMapModel channelMapModel, Channel channel, AliasModel aliasModel,
-                                          UserPreferences userPreferences, TrafficChannelManager trafficChannelManager)
+                                          UserPreferences userPreferences, TrafficChannelManager trafficChannelManager,
+                                          IChannelDescriptor channelDescriptor)
     {
-        List<Module> modules = getPrimaryModules(channelMapModel, channel, aliasModel, userPreferences, trafficChannelManager);
+        List<Module> modules = getPrimaryModules(channelMapModel, channel, aliasModel, userPreferences,
+                trafficChannelManager, channelDescriptor);
         modules.addAll(getAuxiliaryDecoders(channel.getAuxDecodeConfiguration()));
         return modules;
     }
@@ -138,10 +142,12 @@ public static List<Module> getModules(ChannelMapModel channelMapModel, Channel c
      * @param aliasModel for alias lookups
      * @param userPreferences instance
      * @param trafficChannelManager optional traffic channel manager to use
+     * @param channelDescriptor to preload into the decoder state as the current channel.
      * @return list of modules to use for a processing chain
      */
     public static List<Module> getPrimaryModules(ChannelMapModel channelMapModel, Channel channel, AliasModel aliasModel,
-                                                 UserPreferences userPreferences, TrafficChannelManager trafficChannelManager)
+                                                 UserPreferences userPreferences, TrafficChannelManager trafficChannelManager,
+                                                 IChannelDescriptor channelDescriptor)
     {
         List<Module> modules = new ArrayList<Module>();
 
@@ -160,7 +166,7 @@ public static List<Module> getPrimaryModules(ChannelMapModel channelMapModel, Ch
                 break;
             case DMR:
                 processDMR(channel, userPreferences, modules, aliasList, (DecodeConfigDMR)decodeConfig,
-                    trafficChannelManager);
+                    trafficChannelManager, channelDescriptor);
                 break;
             case NBFM:
                 processNBFM(channel, modules, aliasList, decodeConfig);
@@ -413,7 +419,7 @@ private static void processAM(Channel channel, List<Module> modules, AliasList a
      */
     private static void processDMR(Channel channel, UserPreferences userPreferences, List<Module> modules,
                                    AliasList aliasList, DecodeConfigDMR decodeConfig,
-                                   TrafficChannelManager trafficChannelManager)
+                                   TrafficChannelManager trafficChannelManager, IChannelDescriptor channelDescriptor)
     {
         modules.add(new DMRDecoder(decodeConfig));
 
@@ -437,6 +443,32 @@ private static void processDMR(Channel channel, UserPreferences userPreferences,
         DMRDecoderState state1 = new DMRDecoderState(channel, 1, dmrTrafficChannelManager);
         DMRDecoderState state2 = new DMRDecoderState(channel, 2, dmrTrafficChannelManager);
 
+        //Register the states with each other so that they can pass Cap+ site status messaging to resolve current channel
+        state1.setSisterDecoderState(state2);
+        state2.setSisterDecoderState(state1);
+
+        //If an LSN is provided, apply it to both of the decoder states.
+        if(channelDescriptor instanceof DMRLsn lsn)
+        {
+            //If this is a REST descriptor, change it to a standard LSN descriptor.
+            if(channelDescriptor instanceof DmrRestLsn rest)
+            {
+                lsn = new DMRLsn(rest.getLsn());
+                lsn.setTimeslotFrequency(rest.getTimeslotFrequency());
+            }
+
+            if(lsn.getTimeslot() == 1)
+            {
+                state1.setCurrentChannel(lsn);
+                state2.setCurrentChannel(lsn.getSisterTimeslot());
+            }
+            else
+            {
+                state1.setCurrentChannel(lsn.getSisterTimeslot());
+                state2.setCurrentChannel(lsn);
+            }
+        }
+
         if(decodeConfig.hasChannelGrantEvent())
         {
             DecodeEvent event = decodeConfig.getChannelGrantEvent();