diff --git a/include/media/MediaTrack.h b/include/media/MediaTrack.h
index ee3591e..baa3410 100644
--- a/include/media/MediaTrack.h
+++ b/include/media/MediaTrack.h
@@ -23,6 +23,7 @@
 #include <binder/IMemory.h>
 #include <binder/MemoryDealer.h>
 #include <media/MediaExtractorPluginApi.h>
+#include <media/stagefright/MediaBufferGroup.h>
 #include <media/stagefright/MediaErrors.h>
 #include <media/stagefright/MetaData.h>
 #include <media/MediaExtractorPluginApi.h>
@@ -175,6 +176,25 @@
     CMediaTrackV2 *wrapper;
 };
 
+class MediaTrackCUnwrapperV3 : public MediaTrack {
+public:
+    explicit MediaTrackCUnwrapperV3(CMediaTrackV3 *wrapper);
+
+    virtual status_t start();
+    virtual status_t stop();
+    virtual status_t getFormat(MetaDataBase& format);
+    virtual status_t read(MediaBufferBase **buffer, const ReadOptions *options = NULL);
+
+    virtual bool supportNonblockingRead();
+
+protected:
+    virtual ~MediaTrackCUnwrapperV3();
+
+private:
+    CMediaTrackV3 *wrapper;
+    MediaBufferGroup *bufferGroup;
+};
+
 }  // namespace android
 
 #endif  // MEDIA_SOURCE_BASE_H_