Handle rotation signaled in MKV track name from HTC devices

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=216704331

library/core/src/main/java/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java

@@ -157,6 +157,7 @@ public final class MatroskaExtractor implements Extractor {
   private static final int ID_FLAG_DEFAULT = 0x88;
   private static final int ID_FLAG_FORCED = 0x55AA;
   private static final int ID_DEFAULT_DURATION = 0x23E383;
+  private static final int ID_NAME = 0x536E;
   private static final int ID_CODEC_ID = 0x86;
   private static final int ID_CODEC_PRIVATE = 0x63A2;
   private static final int ID_CODEC_DELAY = 0x56AA;
@@ -815,6 +816,9 @@ public final class MatroskaExtractor implements Extractor {
           throw new ParserException("DocType " + value + " not supported");
         }
         break;
+      case ID_NAME:
+        currentTrack.name = value;
+        break;
       case ID_CODEC_ID:
         currentTrack.codecId = value;
         break;
@@ -1463,6 +1467,7 @@ public final class MatroskaExtractor implements Extractor {
         case ID_MAX_FALL:
           return TYPE_UNSIGNED_INT;
         case ID_DOC_TYPE:
+        case ID_NAME:
         case ID_CODEC_ID:
         case ID_LANGUAGE:
           return TYPE_STRING;
@@ -1609,6 +1614,7 @@ public final class MatroskaExtractor implements Extractor {
     private static final int DEFAULT_MAX_FALL = 200;  // nits.
 
     // Common elements.
+    public String name;
     public String codecId;
     public int number;
     public int type;
@@ -1833,9 +1839,33 @@ public final class MatroskaExtractor implements Extractor {
           byte[] hdrStaticInfo = getHdrStaticInfo();
           colorInfo = new ColorInfo(colorSpace, colorRange, colorTransfer, hdrStaticInfo);
         }
-        format = Format.createVideoSampleFormat(Integer.toString(trackId), mimeType, null,
-            Format.NO_VALUE, maxInputSize, width, height, Format.NO_VALUE, initializationData,
-            Format.NO_VALUE, pixelWidthHeightRatio, projectionData, stereoMode, colorInfo,
+        int rotationDegrees = Format.NO_VALUE;
+        // Some HTC devices signal rotation in track names.
+        if ("htc_video_rotA-000".equals(name)) {
+          rotationDegrees = 0;
+        } else if ("htc_video_rotA-090".equals(name)) {
+          rotationDegrees = 90;
+        } else if ("htc_video_rotA-180".equals(name)) {
+          rotationDegrees = 180;
+        } else if ("htc_video_rotA-270".equals(name)) {
+          rotationDegrees = 270;
+        }
+        format =
+            Format.createVideoSampleFormat(
+                Integer.toString(trackId),
+                mimeType,
+                /* codecs= */ null,
+                /* bitrate= */ Format.NO_VALUE,
+                maxInputSize,
+                width,
+                height,
+                /* frameRate= */ Format.NO_VALUE,
+                initializationData,
+                rotationDegrees,
+                pixelWidthHeightRatio,
+                projectionData,
+                stereoMode,
+                colorInfo,
                 drmInitData);
       } else if (MimeTypes.APPLICATION_SUBRIP.equals(mimeType)) {
         type = C.TRACK_TYPE_TEXT;