Use a separate MIME type for DTS Express.

DTS Express (which is DTS LBR according to http://www.mp4ra.org/codecs.html) is
not supported for passthrough playback currently. Associate a different MIME
type with it so that we don't try to use DTS passthrough for playing DTS
Express.

The MIME type for DTS Express is just vnd.dts.hd, with a profile parameter
indicating that it's DTS Express rather than one of the other formats.
-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=117129583

library/src/main/java/com/google/android/exoplayer/extractor/mp4/AtomParsers.java

@@ -741,10 +741,12 @@ import java.util.List;
       mimeType = MimeTypes.AUDIO_AC3;
     } else if (atomType == Atom.TYPE_ec_3) {
       mimeType = MimeTypes.AUDIO_E_AC3;
-    } else if (atomType == Atom.TYPE_dtsc || atomType == Atom.TYPE_dtse) {
+    } else if (atomType == Atom.TYPE_dtsc) {
       mimeType = MimeTypes.AUDIO_DTS;
     } else if (atomType == Atom.TYPE_dtsh || atomType == Atom.TYPE_dtsl) {
       mimeType = MimeTypes.AUDIO_DTS_HD;
+    } else if (atomType == Atom.TYPE_dtse) {
+      mimeType = MimeTypes.AUDIO_DTS_EXPRESS;
     } else if (atomType == Atom.TYPE_samr) {
       mimeType = MimeTypes.AUDIO_AMR_NB;
     } else if (atomType == Atom.TYPE_sawb) {

library/src/main/java/com/google/android/exoplayer/smoothstreaming/SmoothStreamingManifestParser.java

@@ -672,10 +672,12 @@ public class SmoothStreamingManifestParser implements UriLoadable.Parser<SmoothS
         return MimeTypes.AUDIO_AC3;
       } else if (fourCC.equalsIgnoreCase("ec-3") || fourCC.equalsIgnoreCase("dec3")) {
         return MimeTypes.AUDIO_E_AC3;
-      } else if (fourCC.equalsIgnoreCase("dtsc") || fourCC.equalsIgnoreCase("dtse")) {
+      } else if (fourCC.equalsIgnoreCase("dtsc")) {
         return MimeTypes.AUDIO_DTS;
       } else if (fourCC.equalsIgnoreCase("dtsh") || fourCC.equalsIgnoreCase("dtsl")) {
         return MimeTypes.AUDIO_DTS_HD;
+      } else if (fourCC.equalsIgnoreCase("dtse")) {
+        return MimeTypes.AUDIO_DTS_EXPRESS;
       } else if (fourCC.equalsIgnoreCase("opus")) {
         return MimeTypes.AUDIO_OPUS;
       }

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

@@ -47,6 +47,7 @@ public final class MimeTypes {
   public static final String AUDIO_TRUEHD = BASE_TYPE_AUDIO + "/true-hd";
   public static final String AUDIO_DTS = BASE_TYPE_AUDIO + "/vnd.dts";
   public static final String AUDIO_DTS_HD = BASE_TYPE_AUDIO + "/vnd.dts.hd";
+  public static final String AUDIO_DTS_EXPRESS = BASE_TYPE_AUDIO + "/vnd.dts.hd;profile=lbr";
   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_AMR_NB = BASE_TYPE_AUDIO + "/3gpp";