diff --git a/include/gui/IGraphicBufferProducer.h b/include/gui/IGraphicBufferProducer.h
index b8cba2f..4586839 100644
--- a/include/gui/IGraphicBufferProducer.h
+++ b/include/gui/IGraphicBufferProducer.h
@@ -508,6 +508,9 @@
 
     // Returns the name of the connected consumer.
     virtual String8 getConsumerName() const = 0;
+
+    // Returns the number of the next frame which will be dequeued.
+    virtual uint64_t getNextFrameNumber() const = 0;
 };
 
 // ----------------------------------------------------------------------------