Rollback of https://github.com/google/ExoPlayer/commit/be69d5b747ca1f12129ac061cbb259ec45470ef8

Issue: #5596

This arguably made a worse problem than it solved, and also I think subtly broken HLS
downloads by changing which renditions HlsMasterPlaylist.copy would retain in some
cases. Reverting as a mini step toward removing smart logic from the HLS playlist parser.

*** Original commit ***

Expand check for muxed audio media tags to include uris that match variants

Issue:#5313

***

PiperOrigin-RevId: 240348969

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/playlist/HlsPlaylistParser.java

@@ -377,7 +377,7 @@ public final class HlsPlaylistParser implements ParsingLoadable.Parser<HlsPlayli
                   selectionFlags,
                   roleFlags,
                   language);
-          if (isMediaTagMuxed(variants, uri)) {
+          if (uri == null) {
             muxedAudioFormat = format;
           } else {
             audios.add(new HlsMasterPlaylist.HlsUrl(uri, format, name));
@@ -817,20 +817,6 @@ public final class HlsPlaylistParser implements ParsingLoadable.Parser<HlsPlayli
     return Pattern.compile(attribute + "=(" + BOOLEAN_FALSE + "|" + BOOLEAN_TRUE + ")");
   }
 
-  private static boolean isMediaTagMuxed(
-      List<HlsMasterPlaylist.HlsUrl> variants, String mediaTagUri) {
-    if (mediaTagUri == null) {
-      return true;
-    }
-    // The URI attribute is defined, but it may match the uri of a variant.
-    for (int i = 0; i < variants.size(); i++) {
-      if (mediaTagUri.equals(variants.get(i).url)) {
-        return true;
-      }
-    }
-    return false;
-  }
-
   private static class LineIterator {
 
     private final BufferedReader reader;

library/hls/src/test/java/com/google/android/exoplayer2/source/hls/playlist/HlsMasterPlaylistParserTest.java

@@ -146,17 +146,6 @@ public class HlsMasterPlaylistParserTest {
           + "#EXT-X-STREAM-INF:BANDWIDTH=65000,CODECS=\"{$codecs}\"\n"
           + "http://example.com/{$tricky}\n";
 
-  private static final String PLAYLIST_WITH_MULTIPLE_MUXED_MEDIA_TAGS =
-      "#EXTM3U\n"
-          + "#EXT-X-VERSION:3\n"
-          + "#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID=\"a\",NAME=\"audio_0\",DEFAULT=YES,URI=\"0/0.m3u8\"\n"
-          + "#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID=\"b\",NAME=\"audio_0\",DEFAULT=YES,URI=\"1/1.m3u8\"\n"
-          + "#EXT-X-STREAM-INF:BANDWIDTH=140800,CODECS=\"mp4a.40.2\",AUDIO=\"a\"\n"
-          + "0/0.m3u8\n"
-          + "\n"
-          + "#EXT-X-STREAM-INF:BANDWIDTH=281600,CODECS=\"mp4a.40.2\",AUDIO=\"b\"\n"
-          + "1/1.m3u8\n";
-
   @Test
   public void testParseMasterPlaylist() throws IOException {
     HlsMasterPlaylist masterPlaylist = parseMasterPlaylist(PLAYLIST_URI, PLAYLIST_SIMPLE);
@@ -305,14 +294,6 @@ public class HlsMasterPlaylistParserTest {
     assertThat(variant.url).isEqualTo("http://example.com/This/{$nested}/reference/shouldnt/work");
   }
 
-  @Test
-  public void testMultipleMuxedMediaTags() throws IOException {
-    HlsMasterPlaylist playlistWithMultipleMuxedMediaTags =
-        parseMasterPlaylist(PLAYLIST_URI, PLAYLIST_WITH_MULTIPLE_MUXED_MEDIA_TAGS);
-    assertThat(playlistWithMultipleMuxedMediaTags.variants).hasSize(2);
-    assertThat(playlistWithMultipleMuxedMediaTags.audios).isEmpty();
-  }
-
   private static HlsMasterPlaylist parseMasterPlaylist(String uri, String playlistString)
       throws IOException {
     Uri playlistUri = Uri.parse(uri);