From ed4d7bff922e0aa1c5451f8851162f17a24e7d54 Mon Sep 17 00:00:00 2001
From: Daniel Gultsch <daniel@gultsch.de>
Date: Fri, 22 May 2020 16:25:29 +0200
Subject: [PATCH] reset tone manager after reaching NULL status

---
 .../conversations/xmpp/jingle/ToneManager.java   | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/main/java/eu/siacs/conversations/xmpp/jingle/ToneManager.java b/src/main/java/eu/siacs/conversations/xmpp/jingle/ToneManager.java
index 3cdc083c0..60ac67f14 100644
--- a/src/main/java/eu/siacs/conversations/xmpp/jingle/ToneManager.java
+++ b/src/main/java/eu/siacs/conversations/xmpp/jingle/ToneManager.java
@@ -20,6 +20,7 @@ class ToneManager {
 
     private ToneState state = null;
     private ScheduledFuture<?> currentTone;
+    private ScheduledFuture<?> currentResetFuture;
     private boolean appRtcAudioManagerHasControl = false;
 
     ToneManager(final Context context) {
@@ -93,6 +94,13 @@ class ToneManager {
             case ENDING_CALL:
                 scheduleEnding();
                 break;
+            case NULL:
+                if (noResetScheduled()) {
+                    resetAudioManager();
+                }
+                break;
+            default:
+                throw new IllegalStateException("Unable to handle transition to "+state);
         }
         this.state = state;
     }
@@ -111,14 +119,14 @@ class ToneManager {
         this.currentTone = JingleConnectionManager.SCHEDULED_EXECUTOR_SERVICE.schedule(() -> {
             startTone(ToneGenerator.TONE_CDMA_CALLDROP_LITE, 375);
         }, 0, TimeUnit.SECONDS);
-        JingleConnectionManager.SCHEDULED_EXECUTOR_SERVICE.schedule(this::resetAudioManager, 375, TimeUnit.MILLISECONDS);
+        this.currentResetFuture = JingleConnectionManager.SCHEDULED_EXECUTOR_SERVICE.schedule(this::resetAudioManager, 375, TimeUnit.MILLISECONDS);
     }
 
     private void scheduleBusy() {
         this.currentTone = JingleConnectionManager.SCHEDULED_EXECUTOR_SERVICE.schedule(() -> {
             startTone(ToneGenerator.TONE_CDMA_NETWORK_BUSY, 2500);
         }, 0, TimeUnit.SECONDS);
-        JingleConnectionManager.SCHEDULED_EXECUTOR_SERVICE.schedule(this::resetAudioManager, 2500, TimeUnit.MILLISECONDS);
+        this.currentResetFuture = JingleConnectionManager.SCHEDULED_EXECUTOR_SERVICE.schedule(this::resetAudioManager, 2500, TimeUnit.MILLISECONDS);
     }
 
     private void scheduleWaitingTone() {
@@ -127,6 +135,10 @@ class ToneManager {
         }, 0, 3, TimeUnit.SECONDS);
     }
 
+    private boolean noResetScheduled() {
+        return this.currentResetFuture == null || this.currentResetFuture.isDone();
+    }
+
     private void cancelCurrentTone() {
         if (currentTone != null) {
             currentTone.cancel(true);