commit 50101d02a8eae555887282a5f761fdec57bdaf30
author Dan Stoza <stoza@google.com> Thu Apr 07 16:53:23 2016 -0700
committer Dan Stoza <stoza@google.com> Tue Apr 19 15:19:21 2016 -0700
tree 7b89204bdbebded39f42f57667be3fbba15ad7b9
parent 6328134d8f3969e5cf345bec84b2c6455afc6a34

libgui: Add getLastQueuedBuffer to BufferQueue

Adds the ability to get the last buffer queued to a BufferQueue plus
its acquire fence.

Bug: 27708453
Change-Id: Iee39475740b40c854a5f46178b2934fd930e61b8

services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp

diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
index 37b7aba..7e4e797 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
@@ -605,6 +605,12 @@
     return INVALID_OPERATION;
 }
 
+status_t VirtualDisplaySurface::getLastQueuedBuffer(
+        sp<GraphicBuffer>* /*outBuffer*/, sp<Fence>* /*outFence*/) {
+    ALOGE("getLastQueuedBuffer not supported on VirtualDisplaySurface");
+    return INVALID_OPERATION;
+}
+
 void VirtualDisplaySurface::updateQueueBufferOutput(
         const QueueBufferOutput& qbo) {
     uint32_t w, h, transformHint, numPendingBuffers;

services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h

diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
index 818d3eb..bd1cfb1 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
@@ -126,6 +126,8 @@
     virtual status_t setSharedBufferMode(bool sharedBufferMode) override;
     virtual status_t setAutoRefresh(bool autoRefresh) override;
     virtual status_t setDequeueTimeout(nsecs_t timeout) override;
+    virtual status_t getLastQueuedBuffer(sp<GraphicBuffer>* outBuffer,
+            sp<Fence>* outFence) override;
 
     //
     // Utility methods