libgui: Allow an IGBProducer to disable allocation
Adds a new method IGBP::allowAllocation, which controls whether
dequeueBuffer is permitted to allocate a new buffer. If allocation is
disallowed, dequeueBuffer will block or return an error as it
normally would (as controlled by *ControlledByApp).
If there are free buffers, but they are not of the correct dimensions,
format, or usage, they may be freed if a more suitable buffer is not
found first.
Bug: 19801715
Change-Id: I0d604958b78b2fd775c2547690301423f9a52165
diff --git a/services/surfaceflinger/MonitoredProducer.h b/services/surfaceflinger/MonitoredProducer.h
index aec3e85..b2f8293 100644
--- a/services/surfaceflinger/MonitoredProducer.h
+++ b/services/surfaceflinger/MonitoredProducer.h
@@ -53,6 +53,7 @@
virtual status_t setSidebandStream(const sp<NativeHandle>& stream);
virtual void allocateBuffers(bool async, uint32_t width, uint32_t height,
PixelFormat format, uint32_t usage);
+ virtual status_t allowAllocation(bool allow);
virtual IBinder* onAsBinder();
private: