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/*
* Copyright 2022 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 "LayerHandle.h"
#include <cstdint>
#include "Layer.h"
#include "LayerCreationArgs.h"
#include "SurfaceFlinger.h"
namespace android::surfaceflinger {
LayerHandle::LayerHandle(const sp<android::SurfaceFlinger>& flinger,
const sp<android::Layer>& layer)
: mFlinger(flinger), mLayer(layer), mLayerId(static_cast<uint32_t>(layer->getSequence())) {}
LayerHandle::~LayerHandle() {
if (mFlinger) {
mFlinger->onHandleDestroyed(mLayer, mLayerId);
}
}
const String16 LayerHandle::kDescriptor = String16("android.Layer.LayerHandle");
sp<LayerHandle> LayerHandle::fromIBinder(const sp<IBinder>& binder) {
if (binder == nullptr) {
return nullptr;
}
BBinder* b = binder->localBinder();
if (b == nullptr || b->getInterfaceDescriptor() != LayerHandle::kDescriptor) {
ALOGD("handle does not have a valid descriptor");
return nullptr;
}
// We can safely cast this binder since its local and we verified its interface descriptor.
return sp<LayerHandle>::cast(binder);
}
sp<android::Layer> LayerHandle::getLayer(const sp<IBinder>& binder) {
sp<LayerHandle> handle = LayerHandle::fromIBinder(binder);
return handle ? handle->mLayer : nullptr;
}
uint32_t LayerHandle::getLayerId(const sp<IBinder>& binder) {
sp<LayerHandle> handle = LayerHandle::fromIBinder(binder);
return handle ? handle->mLayerId : UNASSIGNED_LAYER_ID;
}
} // namespace android::surfaceflinger
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