63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
/*
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* Copyright 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "LayerHandle.h"
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#include <cstdint>
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#include "Layer.h"
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#include "LayerCreationArgs.h"
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#include "SurfaceFlinger.h"
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namespace android::surfaceflinger {
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LayerHandle::LayerHandle(const sp<android::SurfaceFlinger>& flinger,
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const sp<android::Layer>& layer)
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: mFlinger(flinger), mLayer(layer), mLayerId(static_cast<uint32_t>(layer->getSequence())) {}
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LayerHandle::~LayerHandle() {
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if (mFlinger) {
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mFlinger->onHandleDestroyed(this, mLayer, mLayerId);
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}
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}
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const String16 LayerHandle::kDescriptor = String16("android.Layer.LayerHandle");
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sp<LayerHandle> LayerHandle::fromIBinder(const sp<IBinder>& binder) {
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if (binder == nullptr) {
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return nullptr;
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}
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BBinder* b = binder->localBinder();
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if (b == nullptr || b->getInterfaceDescriptor() != LayerHandle::kDescriptor) {
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ALOGD("handle does not have a valid descriptor");
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return nullptr;
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}
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// We can safely cast this binder since its local and we verified its interface descriptor.
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return sp<LayerHandle>::cast(binder);
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}
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sp<android::Layer> LayerHandle::getLayer(const sp<IBinder>& binder) {
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sp<LayerHandle> handle = LayerHandle::fromIBinder(binder);
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return handle ? handle->mLayer : nullptr;
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}
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uint32_t LayerHandle::getLayerId(const sp<IBinder>& binder) {
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sp<LayerHandle> handle = LayerHandle::fromIBinder(binder);
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return handle ? handle->mLayerId : UNASSIGNED_LAYER_ID;
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}
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} // namespace android::surfaceflinger
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