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- // Copyright 2019 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef COMPONENTS_EXO_FRAME_SINK_RESOURCE_MANAGER_H_
- #define COMPONENTS_EXO_FRAME_SINK_RESOURCE_MANAGER_H_
- #include "base/containers/flat_map.h"
- #include "components/viz/common/resources/release_callback.h"
- #include "components/viz/common/resources/resource_id.h"
- #include "components/viz/common/resources/returned_resource.h"
- namespace exo {
- // This class manages the resource IDs and active resource callbacks suitable
- // for implementing a frame sink.
- class FrameSinkResourceManager {
- public:
- using ReleaseCallback = base::OnceCallback<void(viz::ReturnedResource)>;
- FrameSinkResourceManager();
- FrameSinkResourceManager(const FrameSinkResourceManager&) = delete;
- FrameSinkResourceManager& operator=(const FrameSinkResourceManager&) = delete;
- ~FrameSinkResourceManager();
- bool HasReleaseCallbackForResource(viz::ResourceId id);
- void SetResourceReleaseCallback(viz::ResourceId id, ReleaseCallback callback);
- viz::ResourceId AllocateResourceId();
- bool HasNoCallbacks() const;
- void ReclaimResource(viz::ReturnedResource resource);
- void ClearAllCallbacks();
- private:
- // A collection of callbacks used to release resources.
- using ResourceReleaseCallbackMap =
- base::flat_map<viz::ResourceId, ReleaseCallback>;
- ResourceReleaseCallbackMap release_callbacks_;
- // The id generator for the buffer.
- viz::ResourceIdGenerator id_generator_;
- };
- } // namespace exo
- #endif // COMPONENTS_EXO_FRAME_SINK_RESOURCE_MANAGER_H_
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