Notify listeners about active picture profiles

Bug: 337330263
Test: atest ActivePictureUpdaterTest
Test: atest SurfaceControlPictureProfileTest
Flag: com.android.graphics.libgui.flags.apply_picture_profiles
Change-Id: If08b79faf3d3c4c07248ecd7385a75cfe5357726

1 files changed, 66 insertions, 0 deletions

diff --git a/services/surfaceflinger/ActivePictureUpdater.cpp b/services/surfaceflinger/ActivePictureUpdater.cpp
new file mode 100644
index 0000000000..210e948a49
--- /dev/null
+++ b/services/surfaceflinger/ActivePictureUpdater.cpp
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "ActivePictureUpdater.h"
+
+#include <algorithm>
+
+#include "Layer.h"
+#include "LayerFE.h"
+
+namespace android {
+
+void ActivePictureUpdater::onLayerComposed(const Layer& layer, const LayerFE& layerFE,
+                                           const CompositionResult& result) {
+    if (result.wasPictureProfileCommitted) {
+        gui::ActivePicture picture;
+        picture.layerId = int32_t(layer.sequence);
+        picture.ownerUid = int32_t(layer.getOwnerUid());
+        // TODO(b/337330263): Why does LayerFE coming from SF have a null composition state?
+        if (layerFE.getCompositionState()) {
+            picture.pictureProfileId = layerFE.getCompositionState()->pictureProfileHandle.getId();
+        } else {
+            picture.pictureProfileId = result.pictureProfileHandle.getId();
+        }
+        mNewActivePictures.push_back(picture);
+    }
+}
+
+bool ActivePictureUpdater::updateAndHasChanged() {
+    bool hasChanged = true;
+    if (mNewActivePictures.size() == mOldActivePictures.size()) {
+        auto compare = [](const gui::ActivePicture& lhs, const gui::ActivePicture& rhs) -> int {
+            if (lhs.layerId == rhs.layerId) {
+                return lhs.pictureProfileId < rhs.pictureProfileId;
+            }
+            return lhs.layerId < rhs.layerId;
+        };
+        std::sort(mNewActivePictures.begin(), mNewActivePictures.end(), compare);
+        if (std::equal(mNewActivePictures.begin(), mNewActivePictures.end(),
+                       mOldActivePictures.begin())) {
+            hasChanged = false;
+        }
+    }
+    std::swap(mOldActivePictures, mNewActivePictures);
+    mNewActivePictures.resize(0);
+    return hasChanged;
+}
+
+const std::vector<gui::ActivePicture>& ActivePictureUpdater::getActivePictures() const {
+    return mOldActivePictures;
+}
+
+} // namespace android