MediaPlayer: add listener for raw track data

Bug: 10326117

Change-Id: I2c0bdf8adc67b11f8dc633423bee66897548f181
diff --git a/media/libmediaplayerservice/nuplayer/HTTPLiveSource.h b/media/libmediaplayerservice/nuplayer/HTTPLiveSource.h
index aa9434b..bcc3f8b 100644
--- a/media/libmediaplayerservice/nuplayer/HTTPLiveSource.h
+++ b/media/libmediaplayerservice/nuplayer/HTTPLiveSource.h
@@ -41,6 +41,8 @@
 
     virtual status_t feedMoreTSData();
     virtual status_t getDuration(int64_t *durationUs);
+    virtual status_t getTrackInfo(Parcel *reply) const;
+    virtual status_t selectTrack(size_t trackIndex, bool select);
     virtual status_t seekTo(int64_t seekTimeUs);
 
 protected:
@@ -56,6 +58,7 @@
 
     enum {
         kWhatSessionNotify,
+        kWhatFetchSubtitleData,
     };
 
     AString mURL;
@@ -67,6 +70,7 @@
     off64_t mOffset;
     sp<ALooper> mLiveLooper;
     sp<LiveSession> mLiveSession;
+    int32_t mFetchSubtitleDataGeneration;
 
     void onSessionNotify(const sp<AMessage> &msg);