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/*
* 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 "ActivePictureTracker.h"
#include <algorithm>
#include "Layer.h"
#include "LayerFE.h"
namespace android {
using gui::ActivePicture;
using gui::IActivePictureListener;
void ActivePictureTracker::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);
}
}
void ActivePictureTracker::updateAndNotifyListeners(const Listeners& listenersToAdd,
const Listeners& listenersToRemove) {
Listeners newListeners = updateListeners(listenersToAdd, listenersToRemove);
if (updateAndHasChanged()) {
for (auto listener : mListeners) {
listener->onActivePicturesChanged(getActivePictures());
}
} else {
for (auto listener : newListeners) {
listener->onActivePicturesChanged(getActivePictures());
}
}
}
ActivePictureTracker::Listeners ActivePictureTracker::updateListeners(
const Listeners& listenersToAdd, const Listeners& listenersToRemove) {
Listeners newListeners;
for (auto listener : listenersToRemove) {
std::erase_if(mListeners, [listener](const sp<IActivePictureListener>& otherListener) {
return IInterface::asBinder(listener) == IInterface::asBinder(otherListener);
});
}
for (auto listener : listenersToAdd) {
if (std::find_if(mListeners.begin(), mListeners.end(),
[listener](const sp<IActivePictureListener>& otherListener) {
return IInterface::asBinder(listener) ==
IInterface::asBinder(otherListener);
}) == mListeners.end()) {
newListeners.push_back(listener);
}
}
for (auto listener : newListeners) {
mListeners.push_back(listener);
}
return newListeners;
}
bool ActivePictureTracker::updateAndHasChanged() {
bool hasChanged = true;
if (mNewActivePictures.size() == mOldActivePictures.size()) {
auto compare = [](const ActivePicture& lhs, const 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<ActivePicture>& ActivePictureTracker::getActivePictures() const {
return mOldActivePictures;
}
} // namespace android
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