commit dbc31672ea7e7b8e8847db8ef70447de918d5b27
author Pablo Gamito <pablogamito@google.com> Tue Sep 01 18:28:58 2020 +0000
committer Pablo Gamito <pablogamito@google.com> Fri Sep 25 12:33:30 2020 +0000
tree 3384e13cede47e1920cd31dbb7c548319b638472
parent 91512a00615042c9e80ec3f907339389a53a9810

Add LayerId to SurfaceControl and LayerState when created

Allows us to then dump the LayerState on transaction merges and have an id to associate the LayerState with a layer

Test: Check if layer id is available in the LayerState when we dump the LayerState on merges
Change-Id: I5046835d6a82574110125c7dbdf2098bd10ac296

libs/gui/SurfaceComposerClient.cpp

diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index 0264e17..dd24c2c 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -443,12 +443,14 @@
     std::unordered_map<sp<IBinder>, ComposerState, IBinderHash> composerStates;
     composerStates.reserve(count);
     for (size_t i = 0; i < count; i++) {
-        sp<IBinder> surfaceControlHandle = parcel->readStrongBinder();
+        sp<IBinder> surfaceControlHandle;
+        SAFE_PARCEL(parcel->readStrongBinder, &surfaceControlHandle);
 
         ComposerState composerState;
         if (composerState.read(*parcel) == BAD_VALUE) {
             return BAD_VALUE;
         }
+
         composerStates[surfaceControlHandle] = composerState;
     }
 
@@ -512,8 +514,8 @@
     }
 
     parcel->writeUint32(static_cast<uint32_t>(mComposerStates.size()));
-    for (auto const& [surfaceHandle, composerState] : mComposerStates) {
-        parcel->writeStrongBinder(surfaceHandle);
+    for (auto const& [handle, composerState] : mComposerStates) {
+        SAFE_PARCEL(parcel->writeStrongBinder, handle);
         composerState.write(*parcel);
     }
 
@@ -522,11 +524,11 @@
 }
 
 SurfaceComposerClient::Transaction& SurfaceComposerClient::Transaction::merge(Transaction&& other) {
-    for (auto const& [surfaceHandle, composerState] : other.mComposerStates) {
-        if (mComposerStates.count(surfaceHandle) == 0) {
-            mComposerStates[surfaceHandle] = composerState;
+    for (auto const& [handle, composerState] : other.mComposerStates) {
+        if (mComposerStates.count(handle) == 0) {
+            mComposerStates[handle] = composerState;
         } else {
-            mComposerStates[surfaceHandle].state.merge(composerState.state);
+            mComposerStates[handle].state.merge(composerState.state);
         }
     }
 
@@ -606,7 +608,7 @@
 
     size_t count = 0;
     for (auto& [handle, cs] : mComposerStates) {
-        layer_state_t* s = getLayerState(handle);
+        layer_state_t* s = &(mComposerStates[handle].state);
         if (!(s->what & layer_state_t::eBufferChanged)) {
             continue;
         } else if (s->what & layer_state_t::eCachedBufferChanged) {
@@ -779,11 +781,16 @@
     mExplicitEarlyWakeupEnd = true;
 }
 
-layer_state_t* SurfaceComposerClient::Transaction::getLayerState(const sp<IBinder>& handle) {
+layer_state_t* SurfaceComposerClient::Transaction::getLayerState(const sp<SurfaceControl>& sc) {
+    auto handle = sc->getHandle();
+
     if (mComposerStates.count(handle) == 0) {
         // we don't have it, add an initialized layer_state to our list
         ComposerState s;
+
         s.state.surface = handle;
+        s.state.layerId = sc->getLayerId();
+
         mComposerStates[handle] = s;
     }
 
@@ -1664,7 +1671,7 @@
         }
         ALOGE_IF(err, "SurfaceComposerClient::createWithSurfaceParent error %s", strerror(-err));
         if (err == NO_ERROR) {
-            return new SurfaceControl(this, handle, gbp, transformHint);
+            return new SurfaceControl(this, handle, gbp, id, transformHint);
         }
     }
     return nullptr;
@@ -1697,7 +1704,7 @@
         }
         ALOGE_IF(err, "SurfaceComposerClient::createSurface error %s", strerror(-err));
         if (err == NO_ERROR) {
-            *outSurface = new SurfaceControl(this, handle, gbp, transformHint);
+            *outSurface = new SurfaceControl(this, handle, gbp, id, transformHint);
         }
     }
     return err;
@@ -1713,7 +1720,7 @@
     int32_t layer_id = -1;
     status_t err = mClient->mirrorSurface(mirrorFromHandle, &handle, &layer_id);
     if (err == NO_ERROR) {
-        return new SurfaceControl(this, handle, nullptr, true /* owned */);
+        return new SurfaceControl(this, handle, nullptr, layer_id, true /* owned */);
     }
     return nullptr;
 }