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

1 files changed, 3 insertions, 0 deletions

diff --git a/libs/gui/ConsumerBase.cpp b/libs/gui/ConsumerBase.cpp
index c5900aa5b1..b6adc54d71 100644
--- a/libs/gui/ConsumerBase.cpp
+++ b/libs/gui/ConsumerBase.cpp
@@ -130,6 +130,9 @@ void ConsumerBase::onBuffersReleased() {
     }
 }
 
+void ConsumerBase::onSidebandStreamChanged() {
+}
+
 void ConsumerBase::abandon() {
     CB_LOGV("abandon");
     Mutex::Autolock lock(mMutex);