BufferQueue: Add producer buffer-released callback
Add a callback to the producer side, onBufferReleased, which will be
called every time the consumer releases a buffer back to the
BufferQueue. This will enable a buffer stream splitter to work
autonomously without having to block on dequeueBuffer.
The binder object used for the callback replaces the generic IBinder
token that was passed into IGraphicBufferProducer::connect to detect
the death of the producer. If a producer does not wish to listen for
buffer release events, it can pass in an instance of the
DummyProducerListener class defined in IProducerListener.h, if it even
cares about death events (BufferQueue doesn't enforce the token being
non-NULL, though perhaps we should).
Change-Id: I23935760673524abeafea2b58dccc3583b368710
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
index 09e5544..165224a 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
@@ -27,6 +27,7 @@
// ---------------------------------------------------------------------------
class HWComposer;
+class IProducerListener;
/* This DisplaySurface implementation supports virtual displays, where GLES
* and/or HWC compose into a buffer that is then passed to an arbitrary
@@ -105,7 +106,7 @@
const QueueBufferInput& input, QueueBufferOutput* output);
virtual void cancelBuffer(int pslot, const sp<Fence>& fence);
virtual int query(int what, int* value);
- virtual status_t connect(const sp<IBinder>& token,
+ virtual status_t connect(const sp<IProducerListener>& listener,
int api, bool producerControlledByApp, QueueBufferOutput* output);
virtual status_t disconnect(int api);
virtual status_t setSidebandStream(const sp<NativeHandle>& stream);