commit fe94a225a556265e93b1ebfe520d3637fe7cc67d
author chaviw <chaviw@google.com> Wed Aug 21 13:52:59 2019 -0700
committer chaviw <chaviw@google.com> Tue Oct 01 17:56:39 2019 -0700
tree 0c72ea02c9b193f1144fdf9f16b117eb2573dc91
parent 3809d1d616f95442aad5a45628d72a0726b534ec

[Mirror Layers] Added mirrorSurface API to enable mirroring (3/4)

Added a new SurfaceComposer API called mirrorSurface that allows a
client to request a mirror of a particular heirarchy starting from the
passed in layer. The API will return a SurfaceControl that's the parent
of the mirrored layer that can be updated by the client.

Test: MirrorLayerTest
Bug: 131622422
Change-Id: Ia6047f0334eabfc59d6222b2edfd4e9576ba31e5

libs/gui/ISurfaceComposerClient.cpp

diff --git a/libs/gui/ISurfaceComposerClient.cpp b/libs/gui/ISurfaceComposerClient.cpp
index 129558b..b98e48b 100644
--- a/libs/gui/ISurfaceComposerClient.cpp
+++ b/libs/gui/ISurfaceComposerClient.cpp
@@ -34,7 +34,8 @@
     CREATE_WITH_SURFACE_PARENT,
     CLEAR_LAYER_FRAME_STATS,
     GET_LAYER_FRAME_STATS,
-    LAST = GET_LAYER_FRAME_STATS,
+    MIRROR_SURFACE,
+    LAST = MIRROR_SURFACE,
 };
 
 } // Anonymous namespace
@@ -80,6 +81,12 @@
                 &ISurfaceComposerClient::getLayerFrameStats)>(Tag::GET_LAYER_FRAME_STATS, handle,
                                                               outStats);
     }
+
+    status_t mirrorSurface(const sp<IBinder>& mirrorFromHandle, sp<IBinder>* outHandle) override {
+        return callRemote<decltype(&ISurfaceComposerClient::mirrorSurface)>(Tag::MIRROR_SURFACE,
+                                                                            mirrorFromHandle,
+                                                                            outHandle);
+    }
 };
 
 // Out-of-line virtual method definition to trigger vtable emission in this
@@ -105,6 +112,8 @@
             return callLocal(data, reply, &ISurfaceComposerClient::clearLayerFrameStats);
         case Tag::GET_LAYER_FRAME_STATS:
             return callLocal(data, reply, &ISurfaceComposerClient::getLayerFrameStats);
+        case Tag::MIRROR_SURFACE:
+            return callLocal(data, reply, &ISurfaceComposerClient::mirrorSurface);
     }
 }