Using Class instead of HashMap, removed downloadSubtitles method

src/main/java/org/schabi/newpipe/extractor/Subtitles.java

@@ -0,0 +1,31 @@
+package org.schabi.newpipe.extractor;
+
+public class Subtitles {
+    private String languageName;
+    private String languageCode;
+    private String URL;
+    private boolean autoGenerated;
+
+    public Subtitles(String languageName, String languageCode, String URL, boolean autoGenerated) {
+        this.languageName = languageName;
+        this.languageCode = languageCode;
+        this.URL = URL;
+        this.autoGenerated = autoGenerated;
+    }
+
+    public String getLanguageName() {
+        return languageName;
+    }
+
+    public String getLanguageCode() {
+        return languageCode;
+    }
+
+    public String getURL() {
+        return URL;
+    }
+
+    public boolean isAutoGenerated() {
+        return autoGenerated;
+    }
+}

src/main/java/org/schabi/newpipe/extractor/services/soundcloud/SoundcloudStreamExtractor.java

@@ -3,10 +3,7 @@ package org.schabi.newpipe.extractor.services.soundcloud;
 import com.grack.nanojson.JsonObject;
 import com.grack.nanojson.JsonParser;
 import com.grack.nanojson.JsonParserException;
-import org.schabi.newpipe.extractor.Downloader;
+import org.schabi.newpipe.extractor.*;
-import org.schabi.newpipe.extractor.MediaFormat;
-import org.schabi.newpipe.extractor.NewPipe;
-import org.schabi.newpipe.extractor.StreamingService;
 import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
@@ -195,13 +192,8 @@ public class SoundcloudStreamExtractor extends StreamExtractor {
     }
 
     @Override
-    public HashMap<String, String[]> getSubtitlesList() throws IOException, ExtractionException, JsonParserException {
+    public Subtitles[] getSubtitles() throws IOException, ExtractionException, JsonParserException {
-        return new HashMap<>();
+        return null;
-    }
-
-    @Override
-    public String downloadSubtitles(String URL) throws IOException, ReCaptchaException {
-        return "";
     }
 
     @Override

src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeStreamExtractor.java

@@ -13,6 +13,7 @@ import org.mozilla.javascript.ScriptableObject;
 import org.schabi.newpipe.extractor.Downloader;
 import org.schabi.newpipe.extractor.NewPipe;
 import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.Subtitles;
 import org.schabi.newpipe.extractor.exceptions.ContentNotAvailableException;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
@@ -421,40 +422,35 @@ public class YoutubeStreamExtractor extends StreamExtractor {
     }
 
     @Override
-    public HashMap<String, String[]> getSubtitlesList() throws IOException, ExtractionException, JsonParserException {
+    public Subtitles[] getSubtitles() throws IOException, ExtractionException, JsonParserException {
-        HashMap<String, String[]> result = new HashMap<>();
-
         JsonObject playerConfig = getPlayerConfig(getPageHtml());
-
         String playerResponse = playerConfig.getObject("args").getString("player_response");
 
-        if (!JsonParser.object().from(playerResponse).has("captions")) {
+        if (!JsonParser.object().from(playerResponse).has("captions")) return null;
-            return new HashMap<>();
-        }
 
         JsonObject captions = JsonParser.object().from(playerResponse).getObject("captions");
         JsonArray captionsArray = captions.getObject("playerCaptionsTracklistRenderer").getArray("captionTracks");
 
-        for (int x = 0; x < captionsArray.size(); x++) {
+        int captionsSize = captionsArray.size();
-            String captionsUrlAndName[] = new String[2];
+        Subtitles[] result = new Subtitles[captionsSize];
-            captionsUrlAndName[0] = captionsArray.getObject(x).getString("baseUrl");
-            captionsUrlAndName[1] = captionsArray.getObject(x).getObject("name").getString("simpleText");
-            String captionsLangCode = captionsArray.getObject(x).getString("vssId");
 
-            result.put(captionsLangCode, captionsUrlAndName);
+        for (int x = 0; x < captionsSize; x++) {
+            String baseUrl = captionsArray.getObject(x).getString("baseUrl");
+
+            String languageName = captionsArray.getObject(x).getObject("name").getString("simpleText");
+            String URL = baseUrl.replaceAll("&fmt=[^&]*", "&fmt=vtt");
+
+            String captionsLangCode = captionsArray.getObject(x).getString("vssId");
+            String languageCode = captionsLangCode.replaceAll("(a\\.)|(\\.)", "");
+
+            boolean isAutoGenerated = captionsLangCode.startsWith("a.");
+
+            result[x] = new Subtitles(languageName, languageCode, URL, isAutoGenerated);
         }
          
         return result;
     }
 
-    @Override
-    public String downloadSubtitles(String URL) throws IOException, ReCaptchaException {
-        Downloader dl = NewPipe.getDownloader();
-        // Instead of the WebVTT 'vtt' we can use also Timed Text Markup Language 'ttml'
-        String URLasVTT = URL.replaceAll("&fmt=[^&]*", "&fmt=vtt");
-        return dl.download(URLasVTT);
-    }
-
     @Override
     public StreamType getStreamType() throws ParsingException {
         //todo: if implementing livestream support this value should be generated dynamically
@@ -703,7 +699,7 @@ public class YoutubeStreamExtractor extends StreamExtractor {
     private String decryptSignature(String encryptedSig, String decryptionCode) throws DecryptException {
         Context context = Context.enter();
         context.setOptimizationLevel(-1);
-        Object result = null;
+        Object result;
         try {
             ScriptableObject scope = context.initStandardObjects();
             context.evaluateString(scope, decryptionCode, "decryptionCode", 1, null);

src/main/java/org/schabi/newpipe/extractor/stream/StreamExtractor.java

@@ -23,13 +23,13 @@ package org.schabi.newpipe.extractor.stream;
 import com.grack.nanojson.JsonParserException;
 import org.schabi.newpipe.extractor.Extractor;
 import org.schabi.newpipe.extractor.StreamingService;
+import org.schabi.newpipe.extractor.Subtitles;
 import org.schabi.newpipe.extractor.UrlIdHandler;
 import org.schabi.newpipe.extractor.exceptions.ExtractionException;
 import org.schabi.newpipe.extractor.exceptions.ParsingException;
 import org.schabi.newpipe.extractor.exceptions.ReCaptchaException;
 
 import java.io.IOException;
-import java.util.HashMap;
 import java.util.List;
 
 /**
@@ -67,8 +67,7 @@ public abstract class StreamExtractor extends Extractor {
     public abstract List<AudioStream> getAudioStreams() throws IOException, ExtractionException;
     public abstract List<VideoStream> getVideoStreams() throws IOException, ExtractionException;
     public abstract List<VideoStream> getVideoOnlyStreams() throws IOException, ExtractionException;
-    public abstract HashMap<String, String[]> getSubtitlesList() throws IOException, ExtractionException, JsonParserException;
+    public abstract Subtitles[] getSubtitles() throws IOException, ExtractionException, JsonParserException;
-    public abstract String downloadSubtitles(String URL) throws IOException, ReCaptchaException;
 
     public abstract StreamType getStreamType() throws ParsingException;
     public abstract StreamInfoItem getNextVideo() throws IOException, ExtractionException;