Add support for TrueHD audio codec in WebMExtractor

library/src/main/java/com/google/android/exoplayer/extractor/webm/WebmExtractor.java

@@ -77,6 +77,7 @@ public final class WebmExtractor implements Extractor {
   private static final String CODEC_ID_DTS = "A_DTS";
   private static final String CODEC_ID_DTS_EXPRESS = "A_DTS/EXPRESS";
   private static final String CODEC_ID_DTS_LOSSLESS = "A_DTS/LOSSLESS";
+  private static final String CODEC_ID_TRUEHD = "A_TRUEHD";
   private static final String CODEC_ID_SUBRIP = "S_TEXT/UTF8";
 
   private static final int VORBIS_MAX_INPUT_SIZE = 8192;
@@ -1041,6 +1042,7 @@ public final class WebmExtractor implements Extractor {
         || CODEC_ID_DTS.equals(codecId)
         || CODEC_ID_DTS_EXPRESS.equals(codecId)
         || CODEC_ID_DTS_LOSSLESS.equals(codecId)
+        || CODEC_ID_TRUEHD.equals(codecId)
         || CODEC_ID_SUBRIP.equals(codecId);
   }
 
@@ -1201,6 +1203,9 @@ public final class WebmExtractor implements Extractor {
         case CODEC_ID_DTS_LOSSLESS:
           mimeType = MimeTypes.AUDIO_DTS_HD;
           break;
+        case CODEC_ID_TRUEHD:
+          mimeType = MimeTypes.AUDIO_TRUEHD;
+          break;
         case CODEC_ID_SUBRIP:
           mimeType = MimeTypes.APPLICATION_SUBRIP;
           break;

library/src/main/java/com/google/android/exoplayer/util/MimeTypes.java

@@ -49,6 +49,7 @@ public final class MimeTypes {
   public static final String AUDIO_DTS_HD = BASE_TYPE_AUDIO + "/vnd.dts.hd";
   public static final String AUDIO_VORBIS = BASE_TYPE_AUDIO + "/vorbis";
   public static final String AUDIO_OPUS = BASE_TYPE_AUDIO + "/opus";
+  public static final String AUDIO_TRUEHD = BASE_TYPE_AUDIO + "/true-hd";
 
   public static final String TEXT_VTT = BASE_TYPE_TEXT + "/vtt";