[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
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 86e73c2..a9fad1e 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -3388,6 +3388,35 @@
return flags;
}
+status_t SurfaceFlinger::mirrorLayer(const sp<Client>& client, const sp<IBinder>& mirrorFromHandle,
+ sp<IBinder>* outHandle) {
+ if (!mirrorFromHandle) {
+ return NAME_NOT_FOUND;
+ }
+
+ sp<Layer> mirrorLayer;
+ sp<Layer> mirrorFrom;
+ String8 uniqueName = getUniqueLayerName(String8("MirrorRoot"));
+
+ {
+ Mutex::Autolock _l(mStateLock);
+ mirrorFrom = fromHandle(mirrorFromHandle);
+ if (!mirrorFrom) {
+ return NAME_NOT_FOUND;
+ }
+
+ status_t result = createContainerLayer(client, uniqueName, -1, -1, 0, LayerMetadata(),
+ outHandle, &mirrorLayer);
+ if (result != NO_ERROR) {
+ return result;
+ }
+
+ mirrorLayer->mClonedChild = mirrorFrom->createClone();
+ }
+
+ return addClientLayer(client, *outHandle, nullptr, mirrorLayer, nullptr, nullptr, false);
+}
+
status_t SurfaceFlinger::createLayer(const String8& name, const sp<Client>& client, uint32_t w,
uint32_t h, PixelFormat format, uint32_t flags,
LayerMetadata metadata, sp<IBinder>* handle,