NuPlayer: use getTimestamp instead of getPosition

Bug: 14659809
Bug: 16985287
Change-Id: I59ec72fbd40a9b8d28fe548ddad082c03000c045
diff --git a/include/media/MediaPlayerInterface.h b/include/media/MediaPlayerInterface.h
index 87717da..cf18a45 100644
--- a/include/media/MediaPlayerInterface.h
+++ b/include/media/MediaPlayerInterface.h
@@ -27,6 +27,7 @@
 
 #include <media/mediaplayer.h>
 #include <media/AudioSystem.h>
+#include <media/AudioTimestamp.h>
 #include <media/Metadata.h>
 
 // Fwd decl to make sure everyone agrees that the scope of struct sockaddr_in is
@@ -97,6 +98,7 @@
         virtual uint32_t    latency() const = 0;
         virtual float       msecsPerFrame() const = 0;
         virtual status_t    getPosition(uint32_t *position) const = 0;
+        virtual status_t    getTimestamp(AudioTimestamp &ts) const = 0;
         virtual status_t    getFramesWritten(uint32_t *frameswritten) const = 0;
         virtual int         getSessionId() const = 0;
         virtual audio_stream_type_t getAudioStreamType() const = 0;