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// Copyright 2014 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 CC_SURFACES_SURFACE_MANAGER_H_
#define CC_SURFACES_SURFACE_MANAGER_H_
#include <stdint.h>
#include <list>
#include <unordered_map>
#include <unordered_set>
#include <vector>
#include "base/macros.h"
#include "base/observer_list.h"
#include "base/threading/thread_checker.h"
#include "cc/surfaces/surface_damage_observer.h"
#include "cc/surfaces/surface_id.h"
#include "cc/surfaces/surface_sequence.h"
#include "cc/surfaces/surfaces_export.h"
namespace cc {
class CompositorFrame;
class Surface;
class CC_SURFACES_EXPORT SurfaceManager {
public:
SurfaceManager();
~SurfaceManager();
void RegisterSurface(Surface* surface);
void DeregisterSurface(SurfaceId surface_id);
// Destroy the Surface once a set of sequence numbers has been satisfied.
void Destroy(scoped_ptr<Surface> surface);
Surface* GetSurfaceForId(SurfaceId surface_id);
void AddObserver(SurfaceDamageObserver* obs) {
observer_list_.AddObserver(obs);
}
void RemoveObserver(SurfaceDamageObserver* obs) {
observer_list_.RemoveObserver(obs);
}
bool SurfaceModified(SurfaceId surface_id);
// A frame for a surface satisfies a set of sequence numbers in a particular
// id namespace.
void DidSatisfySequences(uint32_t id_namespace,
std::vector<uint32_t>* sequence);
void RegisterSurfaceIdNamespace(uint32_t id_namespace);
// Invalidate a namespace that might still have associated sequences,
// possibly because a renderer process has crashed.
void InvalidateSurfaceIdNamespace(uint32_t id_namespace);
private:
void GarbageCollectSurfaces();
using SurfaceMap = std::unordered_map<SurfaceId, Surface*, SurfaceIdHash>;
SurfaceMap surface_map_;
base::ObserverList<SurfaceDamageObserver> observer_list_;
base::ThreadChecker thread_checker_;
// List of surfaces to be destroyed, along with what sequences they're still
// waiting on.
using SurfaceDestroyList = std::list<Surface*>;
SurfaceDestroyList surfaces_to_destroy_;
// Set of SurfaceSequences that have been satisfied by a frame but not yet
// waited on.
std::unordered_set<SurfaceSequence, SurfaceSequenceHash> satisfied_sequences_;
// Set of valid surface ID namespaces. When a namespace is removed from
// this set, any remaining sequences with that namespace are considered
// satisfied.
std::unordered_set<uint32_t> valid_surface_id_namespaces_;
DISALLOW_COPY_AND_ASSIGN(SurfaceManager);
};
} // namespace cc
#endif // CC_SURFACES_SURFACE_MANAGER_H_
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