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Commit 7dde599b authored May 22, 2015 by Dan Stoza Committed by Rob Carr Oct 29, 2015

Support SurfaceView synchronization.

Add API for fetching the next frame number to be produced by
a given buffer producer. Add an API to SurfaceComposer to 
defer execution of the current transaction until a given frame number. 
Together these may be used to synchronize app drawing and surface 
control updates.

Change-Id: I8e0f4993332ac0199c768c88581a453fefbaff1d

parent 1fd88a56

include/gui/BufferQueueProducer.h

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -170,6 +170,9 @@ public:
	// See IGraphicBufferProducer::getConsumerName		// See IGraphicBufferProducer::getConsumerName
	virtual String8 getConsumerName() const override;		virtual String8 getConsumerName() const override;

			// See IGraphicBufferProducer::getNextFrameNumber
			virtual uint64_t getNextFrameNumber() const override;

	private:		private:
	// This is required by the IBinder::DeathRecipient interface		// This is required by the IBinder::DeathRecipient interface
	virtual void binderDied(const wp<IBinder>& who);		virtual void binderDied(const wp<IBinder>& who);

include/gui/IGraphicBufferProducer.h

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -508,6 +508,9 @@ public:

	// Returns the name of the connected consumer.		// Returns the name of the connected consumer.
	virtual String8 getConsumerName() const = 0;		virtual String8 getConsumerName() const = 0;

			// Returns the number of the next frame which will be dequeued.
			virtual uint64_t getNextFrameNumber() const = 0;
	};		};

	// ----------------------------------------------------------------------------		// ----------------------------------------------------------------------------

include/gui/Surface.h

+3 −0

Original line number	Original line	Diff line number	Diff line
	@@ -109,6 +109,9 @@ public:
	// See IGraphicBufferProducer::getConsumerName		// See IGraphicBufferProducer::getConsumerName
	String8 getConsumerName() const;		String8 getConsumerName() const;

			// See IGraphicBufferProducer::getNextFrameNumber
			uint64_t getNextFrameNumber() const;

	protected:		protected:
	virtual ~Surface();		virtual ~Surface();

include/gui/SurfaceComposerClient.h

+2 −0

Original line number	Original line	Diff line number	Diff line
	@@ -134,6 +134,8 @@ public:
	status_t setSize(const sp<IBinder>& id, uint32_t w, uint32_t h);		status_t setSize(const sp<IBinder>& id, uint32_t w, uint32_t h);
	status_t setCrop(const sp<IBinder>& id, const Rect& crop);		status_t setCrop(const sp<IBinder>& id, const Rect& crop);
	status_t setLayerStack(const sp<IBinder>& id, uint32_t layerStack);		status_t setLayerStack(const sp<IBinder>& id, uint32_t layerStack);
			status_t deferTransactionUntil(const sp<IBinder>& id,
			const sp<IBinder>& handle, uint64_t frameNumber);
	status_t destroySurface(const sp<IBinder>& id);		status_t destroySurface(const sp<IBinder>& id);

	status_t clearLayerFrameStats(const sp<IBinder>& token) const;		status_t clearLayerFrameStats(const sp<IBinder>& token) const;

include/gui/SurfaceControl.h

+5 −0

Original line number	Original line	Diff line number	Diff line
	@@ -69,10 +69,15 @@ public:
	status_t setMatrix(float dsdx, float dtdx, float dsdy, float dtdy);		status_t setMatrix(float dsdx, float dtdx, float dsdy, float dtdy);
	status_t setCrop(const Rect& crop);		status_t setCrop(const Rect& crop);

			// Defers applying any changes made in this transaction until the Layer
			// identified by handle reaches the given frameNumber
			status_t deferTransactionUntil(sp<IBinder> handle, uint64_t frameNumber);

	static status_t writeSurfaceToParcel(		static status_t writeSurfaceToParcel(
	const sp<SurfaceControl>& control, Parcel* parcel);		const sp<SurfaceControl>& control, Parcel* parcel);

	sp<Surface> getSurface() const;		sp<Surface> getSurface() const;
			sp<IBinder> getHandle() const;

	status_t clearLayerFrameStats() const;		status_t clearLayerFrameStats() const;
	status_t getLayerFrameStats(FrameStats* outStats) const;		status_t getLayerFrameStats(FrameStats* outStats) const;