Code cleanup

Updated javadoc

Cleanup more code

* Improve /Add java doc
* Remove unused code
* Convert TODOs to followup issues

extractor/src/main/java/org/schabi/newpipe/extractor/services/bandcamp/extractors/streaminfoitem/BandcampSearchStreamInfoItemExtractor.java

@@ -22,7 +22,7 @@ public BandcampSearchStreamInfoItemExtractor(final Element searchResult,
     public String getUploaderName() {
         final String subhead = resultInfo.getElementsByClass("subhead").text();
         final String[] splitBy = subhead.split("by ");
-        return splitBy.length > 1 ? splitBy[1] : splitBy[0];
+        return splitBy[splitBy.length > 1 ? 1 : 0];
     }
 
     @Nullable

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

@@ -182,7 +182,6 @@ public List<VideoAudioStream> getVideoStreams() throws IOException, ExtractionEx
                                 dto.getStreamJsonObj().getArray("videoSize");
 
                         return new SimpleVideoAudioStreamImpl(
-                                // TODO: This looks wrong
                                 new VideoAudioFormatRegistry()
                                         .getFromSuffixOrThrow(dto.getUrlKey()),
                                 buildDeliveryData(dto),
@@ -234,4 +233,31 @@ public boolean isLive() {
     public String getCategory() {
         return group;
     }
+
+    static final class MediaCCCLiveStreamMapperDTO {
+        private final JsonObject streamJsonObj;
+        private final String urlKey;
+        private final JsonObject urlValue;
+
+        MediaCCCLiveStreamMapperDTO(final JsonObject streamJsonObj,
+                                    final String urlKey,
+                                    final JsonObject urlValue) {
+            this.streamJsonObj = streamJsonObj;
+            this.urlKey = urlKey;
+            this.urlValue = urlValue;
+        }
+
+        JsonObject getStreamJsonObj() {
+            return streamJsonObj;
+        }
+
+        String getUrlKey() {
+            return urlKey;
+        }
+
+        JsonObject getUrlValue() {
+            return urlValue;
+        }
+    }
+
 }

extractor/src/main/java/org/schabi/newpipe/extractor/services/peertube/extractors/PeertubeStreamExtractor.java

@@ -401,7 +401,6 @@ private void tryExtractSubtitles() {
                                     baseUrl + JsonUtils.getString(caption, "captionPath");
 
                             return new SimpleSubtitleStreamImpl(
-                                    // TODO: Check for null
                                     new SubtitleFormatRegistry()
                                             .getFromSuffixOrThrow(
                                                     url.substring(url.lastIndexOf(".") + 1)),

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

@@ -270,7 +270,7 @@ private List<AudioStream> extractAudioStreams() {
                         return null;
                     }
 
-                    return (AudioStream) new SimpleAudioStreamImpl(
+                    return new SimpleAudioStreamImpl(
                             mediaFormat,
                             protocol.equals("hls")
                                     ? new SimpleHLSDeliveryDataImpl(mediaUrl)

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/dashmanifestcreator/AbstractYoutubeDashManifestCreator.java

@@ -54,7 +54,18 @@
 import javax.xml.transform.dom.DOMSource;
 import javax.xml.transform.stream.StreamResult;
 
-// TODO: Doc
+/**
+ * Abstract class for YouTube DASH manifest creation.
+ *
+ * <p>
+ * This class includes common methods of manifest creators and useful constants.
+ * </p>
+ *
+ * <p>
+ * Generation of DASH documents and their conversion as a string is done using external classes
+ * from {@link org.w3c.dom} and {@link javax.xml} packages.
+ * </p>
+ */
 public abstract class AbstractYoutubeDashManifestCreator implements DashManifestCreator {
 
     /**

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

@@ -614,7 +614,8 @@ public List<AudioStream> getAudioStreams() throws ExtractionException {
 
     @Override
     public List<VideoAudioStream> getVideoStreams() throws ExtractionException {
-        return buildStrems(FORMATS,
+        return buildStrems(
+                FORMATS,
                 ItagFormatRegistry.VIDEO_AUDIO_FORMATS,
                 (itagInfo, deliveryData) -> new SimpleVideoAudioStreamImpl(
                         itagInfo.getItagFormat().mediaFormat(),
@@ -1199,6 +1200,19 @@ I extends ItagFormat<?>> List<T> buildStrems(
         }
     }
 
+    /*
+     * Note: We build the manifests for YT ourself because the provided ones (according to AudricV)
+     * <ul>
+     * <li>aren't working https://github.com/google/ExoPlayer/issues/2422#issuecomment-283080031
+     * </li>
+     * <li>causes memory problems; TransactionTooLargeException: data parcel size 3174340</li>
+     * <li>are not always returned, only for videos with OTF streams, or on (ended or not)
+     * livestreams</li>
+     * <li>Instead of downloading a 10MB manifest when you can generate one which is 1 or 2MB
+     * large</li>
+     * <li>Also, this manifest isn't used at all by modern YouTube clients.</li>
+     * </ul>
+     */
     @Nonnull
     private <I extends ItagFormat<?>> DeliveryData buildDeliveryData(final ItagInfo<I> itagInfo) {
         final ItagFormatDeliveryData iDeliveryData = itagInfo.getItagFormat().deliveryData();

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/itag/format/registry/ItagFormatRegistry.java

@@ -21,7 +21,15 @@
 import java.util.stream.Stream;
 
 // CHECKSTYLE:OFF - Link is too long
-// https://github.com/ytdl-org/youtube-dl/blob/9aa8e5340f3d5ece372b983f8e399277ca1f1fe4/youtube_dl/extractor/youtube.py#L1195
+/**
+ * A registry that contains all supported YouTube itags.
+ * <p>
+ * For additional information you may also check:
+ * <ul>
+ *     <li>https://github.com/ytdl-org/youtube-dl/blob/9aa8e5340f3d5ece372b983f8e399277ca1f1fe4/youtube_dl/extractor/youtube.py#L1195</li>
+ *     <li>https://gist.github.com/AgentOak/34d47c65b1d28829bb17c24c04a0096f</li>
+ * </ul>
+ */
 // CHECKSTYLE:ON
 public final class ItagFormatRegistry {
 

extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/itag/info/ItagInfo.java

@@ -15,7 +15,6 @@ public class ItagInfo<I extends ItagFormat<?>> {
     @Nonnull
     private final I itagFormat;
 
-    // TODO: Maybe generate the streamUrl on-demand and not always instantly?
     @Nonnull
     private final String streamUrl;
 

extractor/src/main/java/org/schabi/newpipe/extractor/streamdata/delivery/dashmanifestcreator/DashManifestCreatorConstants.java

@@ -2,7 +2,7 @@
 
 public final class DashManifestCreatorConstants {
     private DashManifestCreatorConstants() {
-        // No impl!
+        // No impl
     }
 
     // XML elements of DASH MPD manifests

extractor/src/main/java/org/schabi/newpipe/extractor/streamdata/delivery/simpleimpl/SimpleDASHManifestDeliveryDataImpl.java

@@ -7,17 +7,6 @@
 
 import javax.annotation.Nonnull;
 
-/**
- * Note we build the manifests for YT ourself because the provided ones (according to TiA4f8R)
- * <ul>
- * <li>aren't working https://github.com/google/ExoPlayer/issues/2422#issuecomment-283080031</li>
- * <li>causes memory problems; TransactionTooLargeException: data parcel size 3174340</li>
- * <li>are not always returned, only for videos with OTF streams, or on (ended or not)
- * livestreams</li>
- * <li>Instead of downloading a 10MB manifest when you can generate one which is 1 or 2MB large</li>
- * <li>Also, this manifest isn't used at all by modern YouTube clients.</li>
- * </ul>
- */
 public class SimpleDASHManifestDeliveryDataImpl extends AbstractDeliveryDataImpl
         implements DASHManifestDeliveryData {
     @Nonnull

extractor/src/main/java/org/schabi/newpipe/extractor/streamdata/stream/simpleimpl/SimpleVideoAudioStreamImpl.java

@@ -36,13 +36,6 @@ public SimpleVideoAudioStreamImpl(
         this(mediaFormat, deliveryData, videoQualityData, UNKNOWN_AVG_BITRATE);
     }
 
-    public SimpleVideoAudioStreamImpl(
-            @Nonnull final VideoAudioMediaFormat mediaFormat,
-            @Nonnull final DeliveryData deliveryData
-    ) {
-        this(mediaFormat, deliveryData, VideoQualityData.fromUnknown());
-    }
-
     @Nonnull
     @Override
     public VideoQualityData videoQualityData() {

extractor/src/main/java/org/schabi/newpipe/extractor/utils/Pair.java

@@ -3,7 +3,7 @@
 import java.util.Objects;
 
 /**
- * class to create a pair of objects.
+ * Class to create a pair of objects.
  *
  *
  * <p>