| // 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: |
| FrameSinkResourceManager(); |
| ~FrameSinkResourceManager(); |
| |
| bool HasReleaseCallbackForResource(viz::ResourceId id); |
| void SetResourceReleaseCallback(viz::ResourceId id, |
| viz::ReleaseCallback callback); |
| int AllocateResourceId(); |
| |
| bool HasNoCallbacks() const; |
| void ReclaimResource(const viz::ReturnedResource& resource); |
| void ClearAllCallbacks(); |
| |
| private: |
| // A collection of callbacks used to release resources. |
| using ResourceReleaseCallbackMap = |
| base::flat_map<viz::ResourceId, viz::ReleaseCallback>; |
| ResourceReleaseCallbackMap release_callbacks_; |
| |
| // The next resource id the buffer is attached to. |
| int next_resource_id_ = 1; |
| |
| DISALLOW_COPY_AND_ASSIGN(FrameSinkResourceManager); |
| }; |
| |
| } // namespace exo |
| |
| #endif // COMPONENTS_EXO_FRAME_SINK_RESOURCE_MANAGER_H_ |