commit 8e3e92b906db431c4fa822f21242977d4ee99942
author Pablo Ceballos <pceballos@google.com> Mon Jun 27 17:56:53 2016 -0700
committer Pablo Ceballos <pceballos@google.com> Tue Jun 28 13:49:07 2016 -0700
tree 575005a90d0143170dedd2fe0c1e97110fce7a8a
parent ced6078b0e03a75d9b78e61ce25609bd2cb97b1d

BQ: Add and expose a unique id

Bug 29422927

Change-Id: I80eab94f073ebc378302f00fa86a740c3643657e

include/gui/BufferQueueCore.h

diff --git a/include/gui/BufferQueueCore.h b/include/gui/BufferQueueCore.h
index 4337da9..0371db7 100644
--- a/include/gui/BufferQueueCore.h
+++ b/include/gui/BufferQueueCore.h
@@ -322,6 +322,8 @@
     // The slot of the last queued buffer
     int mLastQueuedSlot;
 
+    const uint64_t mUniqueId;
+
 }; // class BufferQueueCore
 
 } // namespace android

include/gui/BufferQueueProducer.h

diff --git a/include/gui/BufferQueueProducer.h b/include/gui/BufferQueueProducer.h
index a75ed98..48c3396 100644
--- a/include/gui/BufferQueueProducer.h
+++ b/include/gui/BufferQueueProducer.h
@@ -186,6 +186,9 @@
     virtual status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
             sp<Fence>* outFence, float outTransformMatrix[16]) override;
 
+    // See IGraphicBufferProducer::getUniqueId
+    virtual status_t getUniqueId(uint64_t* outId) const override;
+
 private:
     // This is required by the IBinder::DeathRecipient interface
     virtual void binderDied(const wp<IBinder>& who);

include/gui/IGraphicBufferProducer.h

diff --git a/include/gui/IGraphicBufferProducer.h b/include/gui/IGraphicBufferProducer.h
index 37ae6df..336ca70 100644
--- a/include/gui/IGraphicBufferProducer.h
+++ b/include/gui/IGraphicBufferProducer.h
@@ -568,6 +568,9 @@
     // Returns NO_ERROR or the status of the Binder transaction
     virtual status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
             sp<Fence>* outFence, float outTransformMatrix[16]) = 0;
+
+    // Returns a unique id for this BufferQueue
+    virtual status_t getUniqueId(uint64_t* outId) const = 0;
 };
 
 // ----------------------------------------------------------------------------

include/gui/Surface.h

diff --git a/include/gui/Surface.h b/include/gui/Surface.h
index 646203b..bcce14a 100644
--- a/include/gui/Surface.h
+++ b/include/gui/Surface.h
@@ -134,6 +134,8 @@
     status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
             sp<Fence>* outFence, float outTransformMatrix[16]);
 
+    status_t getUniqueId(uint64_t* outId) const;
+
 protected:
     virtual ~Surface();