Add sideband streams to BufferQueue and related classes
Sideband streams are essentially a device-specific buffer queue that
bypasses the BufferQueue system. They can be used for situations with
hard real-time requirements like high-quality TV and video playback
with A/V sync. A handle to the stream is provided by the source HAL,
and attached to a BufferQueue. The sink HAL can read buffers via the
stream handle rather than acquiring individual buffers from the
BufferQueue.
Change-Id: Ib3f262eddfc520f4bbe3d9b91753ed7dd09d3a9b
diff --git a/include/gui/ConsumerBase.h b/include/gui/ConsumerBase.h
index fb21185..100bb26 100644
--- a/include/gui/ConsumerBase.h
+++ b/include/gui/ConsumerBase.h
@@ -101,11 +101,14 @@
// Implementation of the IConsumerListener interface. These
// calls are used to notify the ConsumerBase of asynchronous events in the
- // BufferQueue. These methods should not need to be overridden by derived
- // classes, but if they are overridden the ConsumerBase implementation
- // must be called from the derived class.
+ // BufferQueue. The onFrameAvailable and onBuffersReleased methods should
+ // not need to be overridden by derived classes, but if they are overridden
+ // the ConsumerBase implementation must be called from the derived class.
+ // The ConsumerBase version of onSidebandStreamChanged does nothing and can
+ // be overriden by derived classes if they want the notification.
virtual void onFrameAvailable();
virtual void onBuffersReleased();
+ virtual void onSidebandStreamChanged();
// freeBufferLocked frees up the given buffer slot. If the slot has been
// initialized this will release the reference to the GraphicBuffer in that