diff --git a/include/gui/BufferQueueProducer.h b/include/gui/BufferQueueProducer.h
index 8912097..250d33c 100644
--- a/include/gui/BufferQueueProducer.h
+++ b/include/gui/BufferQueueProducer.h
@@ -147,6 +147,18 @@
     // connected to the specified producer API.
     virtual status_t disconnect(int api);
 
+    // Attaches a sideband buffer stream to the IGraphicBufferProducer.
+    //
+    // A sideband stream is a device-specific mechanism for passing buffers
+    // from the producer to the consumer without using dequeueBuffer/
+    // queueBuffer. If a sideband stream is present, the consumer can choose
+    // whether to acquire buffers from the sideband stream or from the queued
+    // buffers.
+    //
+    // Passing NULL or a different stream handle will detach the previous
+    // handle if any.
+    virtual status_t setSidebandStream(const sp<NativeHandle>& stream);
+
 private:
     // This is required by the IBinder::DeathRecipient interface
     virtual void binderDied(const wp<IBinder>& who);