Add a default no-op implementation for SubtitleParser.reset

Most implementations were already no-ops.

PiperOrigin-RevId: 557503628

libraries/extractor/src/main/java/androidx/media3/extractor/text/SubtitleParser.java

@@ -91,6 +91,8 @@ public interface SubtitleParser {
    * Clears any data stored inside this parser from previous {@link #parse(byte[])} calls.
    *
    * <p>This must be called after a seek or other similar discontinuity in the source data.
+   *
+   * <p>The default implementation is a no-op.
    */
-  void reset();
+  default void reset() {}
 }

libraries/extractor/src/main/java/androidx/media3/extractor/text/pgs/PgsParser.java

@@ -53,9 +53,6 @@ public final class PgsParser implements SubtitleParser {
     cueBuilder = new CueBuilder();
   }
 
-  @Override
-  public void reset() {}
-
   @Override
   public ImmutableList<CuesWithTiming> parse(byte[] data, int offset, int length) {
     buffer.reset(data, /* limit= */ offset + length);

libraries/extractor/src/main/java/androidx/media3/extractor/text/ssa/SsaParser.java

@@ -117,9 +117,6 @@ public final class SsaParser implements SubtitleParser {
     }
   }
 
-  @Override
-  public void reset() {}
-
   @Nullable
   @Override
   public ImmutableList<CuesWithTiming> parse(byte[] data, int offset, int length) {

libraries/extractor/src/main/java/androidx/media3/extractor/text/subrip/SubripParser.java

@@ -151,9 +151,6 @@ public final class SubripParser implements SubtitleParser {
     return cues.build();
   }
 
-  @Override
-  public void reset() {}
-
   /**
    * Determine UTF encoding of the byte array from a byte order mark (BOM), defaulting to UTF-8 if
    * no BOM is found.

libraries/extractor/src/main/java/androidx/media3/extractor/text/ttml/TtmlParser.java

@@ -191,9 +191,6 @@ public final class TtmlParser implements SubtitleParser {
     }
   }
 
-  @Override
-  public void reset() {}
-
   private static FrameAndTickRate parseFrameAndTickRates(XmlPullParser xmlParser) {
     int frameRate = DEFAULT_FRAME_RATE;
     String frameRateString = xmlParser.getAttributeValue(TTP, "frameRate");

libraries/extractor/src/main/java/androidx/media3/extractor/text/tx3g/Tx3gParser.java

@@ -122,9 +122,6 @@ public final class Tx3gParser implements SubtitleParser {
     }
   }
 
-  @Override
-  public void reset() {}
-
   @Override
   public ImmutableList<CuesWithTiming> parse(byte[] data, int offset, int length) {
     parsableByteArray.reset(data, /* limit= */ offset + length);

libraries/extractor/src/main/java/androidx/media3/extractor/text/webvtt/Mp4WebvttParser.java

@@ -76,9 +76,6 @@ public final class Mp4WebvttParser implements SubtitleParser {
         new CuesWithTiming(cues, /* startTimeUs= */ C.TIME_UNSET, /* durationUs= */ C.TIME_UNSET));
   }
 
-  @Override
-  public void reset() {}
-
   private static Cue parseVttCueBox(ParsableByteArray sampleData, int remainingCueBoxBytes) {
     @Nullable Cue.Builder cueBuilder = null;
     @Nullable CharSequence cueText = null;

libraries/extractor/src/main/java/androidx/media3/extractor/text/webvtt/WebvttParser.java

@@ -88,9 +88,6 @@ public final class WebvttParser implements SubtitleParser {
     return subtitle.toCuesWithTimingList();
   }
 
-  @Override
-  public void reset() {}
-
   /**
    * Positions the input right before the next event, and returns the kind of event found. Does not
    * consume any data from such event, if any.