In order to recover from video lagging behind audio, drop avc frames

that are not referenced by other frames before feeding them into the decoder.

Change-Id: I822190af8f8329567bff8da1ea23136d0a765481
diff --git a/media/libmediaplayerservice/nuplayer/NuPlayer.h b/media/libmediaplayerservice/nuplayer/NuPlayer.h
index 41e015b..a5382b4 100644
--- a/media/libmediaplayerservice/nuplayer/NuPlayer.h
+++ b/media/libmediaplayerservice/nuplayer/NuPlayer.h
@@ -92,6 +92,7 @@
     sp<NativeWindowWrapper> mNativeWindow;
     sp<MediaPlayerBase::AudioSink> mAudioSink;
     sp<Decoder> mVideoDecoder;
+    bool mVideoIsAVC;
     sp<Decoder> mAudioDecoder;
     sp<Renderer> mRenderer;
 
@@ -119,6 +120,9 @@
     int64_t mSkipRenderingAudioUntilMediaTimeUs;
     int64_t mSkipRenderingVideoUntilMediaTimeUs;
 
+    int64_t mVideoLateByUs;
+    int64_t mNumFramesTotal, mNumFramesDropped;
+
     status_t instantiateDecoder(bool audio, sp<Decoder> *decoder);
 
     status_t feedDecoderInputData(bool audio, const sp<AMessage> &msg);