blast: Send transaction listener from SCC to SF

Send the TransactionCompletedListeners to SurfaceFlinger via transactions.
The listener will be used to send callbacks after a transaction has completed.

Test: Transaction_test
Bug: 80477568

Change-Id: I51d3877f2803a192f95db4dd211f48aca9651c30

1 files changed, 19 insertions, 0 deletions

diff --git a/libs/gui/LayerState.cpp b/libs/gui/LayerState.cpp
index 2b0a46181b..7b71b39ce0 100644
--- a/libs/gui/LayerState.cpp
+++ b/libs/gui/LayerState.cpp
@@ -80,6 +80,13 @@ status_t layer_state_t::write(Parcel& output) const
     memcpy(output.writeInplace(16 * sizeof(float)),
            colorTransform.asArray(), 16 * sizeof(float));
 
+    if (output.writeVectorSize(listenerCallbacks) == NO_ERROR) {
+        for (const auto& [listener, callbackIds] : listenerCallbacks) {
+            output.writeStrongBinder(IInterface::asBinder(listener));
+            output.writeInt64Vector(callbackIds);
+        }
+    }
+
     return NO_ERROR;
 }
 
@@ -135,6 +142,14 @@ status_t layer_state_t::read(const Parcel& input)
 
     colorTransform = mat4(static_cast<const float*>(input.readInplace(16 * sizeof(float))));
 
+    int32_t listenersSize = input.readInt32();
+    for (int32_t i = 0; i < listenersSize; i++) {
+        auto listener = interface_cast<ITransactionCompletedListener>(input.readStrongBinder());
+        std::vector<CallbackId> callbackIds;
+        input.readInt64Vector(&callbackIds);
+        listenerCallbacks.emplace_back(listener, callbackIds);
+    }
+
     return NO_ERROR;
 }
 
@@ -323,6 +338,10 @@ void layer_state_t::merge(const layer_state_t& other) {
         what |= eColorTransformChanged;
         colorTransform = other.colorTransform;
     }
+    if (other.what & eListenerCallbacksChanged) {
+        what |= eListenerCallbacksChanged;
+        listenerCallbacks = other.listenerCallbacks;
+    }
 
     if ((other.what & what) != other.what) {
         ALOGE("Unmerged SurfaceComposer Transaction properties. LayerState::merge needs updating? "