Merge pull request #8249 from karyogamy/caption-fix-2

Fix disabled caption to no longer automatically re-enable on new player instance

.github/workflows/ci.yml

@@ -6,6 +6,7 @@ on:
     branches:
       - dev
       - master
+      - release/**
     paths-ignore:
       - 'README.md'
       - 'doc/**'

app/src/main/java/org/schabi/newpipe/player/Player.java

@@ -3557,15 +3557,27 @@ public final class Player implements
         }
 
         // apply caption language from previous user preference
-        final List<String> selectedPreferredLanguages =
-                trackSelector.getParameters().preferredTextLanguages;
+        final int textRendererIndex = getCaptionRendererIndex();
+        if (textRendererIndex == RENDERER_UNAVAILABLE) {
+            return;
+        }
+
+        // If user prefers to show no caption, then disable the renderer.
+        // Otherwise, DefaultTrackSelector may automatically find an available caption
+        // and display that.
         final String userPreferredLanguage =
                 prefs.getString(context.getString(R.string.caption_user_set_key), null);
-        final int textRendererIndex = getCaptionRendererIndex();
+        if (userPreferredLanguage == null) {
+            trackSelector.setParameters(trackSelector.buildUponParameters()
+                    .setRendererDisabled(textRendererIndex, true));
+            return;
+        }
 
-        if (userPreferredLanguage != null
-                && !selectedPreferredLanguages.contains(userPreferredLanguage)
-                && textRendererIndex != RENDERER_UNAVAILABLE) {
+        // Only set preferred language if it does not match the user preference,
+        // otherwise there might be an infinite cycle at onTextTracksChanged.
+        final List<String> selectedPreferredLanguages =
+                trackSelector.getParameters().preferredTextLanguages;
+        if (!selectedPreferredLanguages.contains(userPreferredLanguage)) {
             trackSelector.setParameters(trackSelector.buildUponParameters()
                     .setPreferredTextLanguages(userPreferredLanguage,
                             PlayerHelper.captionLanguageStemOf(userPreferredLanguage))