blob: 007f33d10a252a8c19ff2b59c37a5836288809a7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// 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_H_
#define CC_SURFACES_SURFACE_H_
#include "base/containers/hash_tables.h"
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "cc/resources/resource_provider.h"
#include "cc/resources/return_callback.h"
#include "cc/surfaces/surface_client.h"
#include "cc/surfaces/surface_id.h"
#include "cc/surfaces/surfaces_export.h"
#include "ui/gfx/size.h"
namespace cc {
class CompositorFrame;
class SurfaceManager;
class CC_SURFACES_EXPORT Surface {
public:
Surface(SurfaceManager* manager,
SurfaceClient* client,
const gfx::Size& size);
~Surface();
const gfx::Size& size() const { return size_; }
SurfaceId surface_id() const { return surface_id_; }
void QueueFrame(scoped_ptr<CompositorFrame> frame);
// Returns the most recent frame that is eligible to be rendered.
CompositorFrame* GetEligibleFrame();
// Takes a reference to all of the current frame's resources for an external
// consumer (e.g. a ResourceProvider). The caller to this should call
// UnrefResources() when they are done with the resources.
void RefCurrentFrameResources();
void UnrefResources(const ReturnedResourceArray& resources);
// Returns all resources that are currently not in use to the client.
void ReturnUnusedResourcesToClient();
private:
void ReceiveResourcesFromClient(const TransferableResourceArray& resources);
SurfaceManager* manager_;
SurfaceClient* client_;
gfx::Size size_;
SurfaceId surface_id_;
// TODO(jamesr): Support multiple frames in flight.
scoped_ptr<CompositorFrame> current_frame_;
struct ResourceRefs {
ResourceRefs();
int refs_received_from_child;
int refs_holding_resource_alive;
};
// Keeps track of the number of users currently in flight for each resource
// ID we've received from the client. When this counter hits zero for a
// particular resource, that ID is available to return to the client.
typedef base::hash_map<ResourceProvider::ResourceId, ResourceRefs>
ResourceIdCountMap;
ResourceIdCountMap resource_id_use_count_map_;
ReturnedResourceArray resources_available_to_return_;
DISALLOW_COPY_AND_ASSIGN(Surface);
};
} // namespace cc
#endif // CC_SURFACES_SURFACE_H_
|
