[MediaCCC] Extract audio language property for single language audio tracks

Author: AudricV

extractor/src/main/java/org/schabi/newpipe/extractor/services/media_ccc/extractors/MediaCCCStreamExtractor.java

@@ -24,6 +24,7 @@
 import org.schabi.newpipe.extractor.stream.StreamType;
 import org.schabi.newpipe.extractor.stream.VideoStream;
 import org.schabi.newpipe.extractor.utils.JsonUtils;
+import org.schabi.newpipe.extractor.utils.LocaleCompat;
 
 import java.io.IOException;
 import java.util.ArrayList;
@@ -114,15 +115,24 @@ public List<AudioStream> getAudioStreams() throws ExtractionException {
                     mediaFormat = null;
                 }
 
-                // Not checking containsSimilarStream here, since MediaCCC does not provide enough
-                // information to decide whether two streams are similar. Hence that method would
-                // always return false, e.g. even for different language variations.
-                audioStreams.add(new AudioStream.Builder()
+                final AudioStream.Builder builder = new AudioStream.Builder()
                         .setId(recording.getString("filename", ID_UNKNOWN))
                         .setContent(recording.getString("recording_url"), true)
                         .setMediaFormat(mediaFormat)
-                        .setAverageBitrate(UNKNOWN_BITRATE)
-                        .build());
+                        .setAverageBitrate(UNKNOWN_BITRATE);
+
+                final String language = recording.getString("language");
+                // If the language contains a - symbol, this means that the stream has an audio
+                // track with multiple languages, so there is no specific language for this stream
+                // Don't set the audio language in this case
+                if (language != null && !language.contains("-")) {
+                    builder.setAudioLocale(LocaleCompat.forLanguageTag(language));
+                }
+
+                // Not checking containsSimilarStream here, since MediaCCC does not provide enough
+                // information to decide whether two streams are similar. Hence that method would
+                // always return false, e.g. even for different language variations.
+                audioStreams.add(builder.build());
             }
         }
         return audioStreams;