Report the skipped silence more deterministically

Issue: #1035
#minor-release
PiperOrigin-RevId: 605361126
(cherry picked from commit 9b0cdde)

Author: tianyif

RELEASENOTES.md

@@ -19,6 +19,8 @@
     *   Improve silence skipping algorithm with smooth volume ramp, retained
         minimal silence and more natural silence durations
         ([#7423](https://github.com/google/ExoPlayer/issues/7423)).
+    *   Report the skipped silence more deterministically
+        ([#1035](https://github.com/androidx/media/issues/1035)).
 *   Video:
 *   Text:
 *   Metadata:

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/DefaultAudioSink.java

@@ -99,7 +99,7 @@ public final class DefaultAudioSink implements AudioSink {
   private static final int AUDIO_TRACK_SMALLER_BUFFER_RETRY_SIZE = 1_000_000;
 
   /** The minimum duration of the skipped silence to be reported as discontinuity. */
-  private static final int MINIMUM_REPORT_SKIPPED_SILENCE_DURATION_US = 1_000_000;
+  private static final int MINIMUM_REPORT_SKIPPED_SILENCE_DURATION_US = 300_000;
 
   /**
    * The delay of reporting the skipped silence, during which the default audio sink checks if there
@@ -2340,10 +2340,8 @@ private void maybeReportSkippedSilence() {
     if (accumulatedSkippedSilenceDurationUs >= MINIMUM_REPORT_SKIPPED_SILENCE_DURATION_US) {
       // If the existing silence is already long enough, report the silence
       listener.onSilenceSkipped();
+      accumulatedSkippedSilenceDurationUs = 0;
     }
-    // Reset the accumulated silence anyway as the later silences are far from the current one
-    // and should be treated separately.
-    accumulatedSkippedSilenceDurationUs = 0;
   }
 
   @RequiresApi(23)