blob: dbaec68be5fb3c592e5d55959c869c3b74bea2d9 (
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
76
77
78
79
80
|
// Copyright (c) 2012 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 CONTENT_BROWSER_GPU_GPU_SURFACE_TRACKER_H_
#define CONTENT_BROWSER_GPU_GPU_SURFACE_TRACKER_H_
#include <stddef.h>
#include <map>
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/memory/singleton.h"
#include "base/synchronization/lock.h"
#include "content/common/content_export.h"
#include "gpu/ipc/common/gpu_surface_lookup.h"
#include "gpu/ipc/common/surface_handle.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/native_widget_types.h"
namespace content {
// This class is responsible for managing rendering surfaces exposed to the
// GPU process. Every surface gets registered to this class, and gets an ID.
// All calls to and from the GPU process, with the exception of
// CreateViewCommandBuffer, refer to the rendering surface by its ID.
// This class is thread safe.
//
// Note: The ID can exist before the actual native handle for the surface is
// created, for example to allow giving a reference to it to a renderer, so that
// it is unamibiguously identified.
class CONTENT_EXPORT GpuSurfaceTracker : public gpu::GpuSurfaceLookup {
public:
// GpuSurfaceLookup implementation:
// Returns the native widget associated with a given surface_id.
gfx::AcceleratedWidget AcquireNativeWidget(int surface_id) override;
#if defined(OS_ANDROID)
gfx::ScopedJavaSurface AcquireJavaSurface(int surface_id) override;
#endif
// Gets the global instance of the surface tracker.
static GpuSurfaceTracker* Get() { return GetInstance(); }
// Adds a surface for a native widget. Returns the surface ID.
int AddSurfaceForNativeWidget(gfx::AcceleratedWidget widget);
// Removes a given existing surface.
void RemoveSurface(int surface_id);
// Gets the native handle for the given surface.
// Note: This is an O(log N) lookup.
gpu::SurfaceHandle GetSurfaceHandle(int surface_id);
// Returns the number of surfaces currently registered with the tracker.
std::size_t GetSurfaceCount();
// Gets the global instance of the surface tracker. Identical to Get(), but
// named that way for the implementation of Singleton.
static GpuSurfaceTracker* GetInstance();
private:
typedef std::map<int, gfx::AcceleratedWidget> SurfaceMap;
friend struct base::DefaultSingletonTraits<GpuSurfaceTracker>;
GpuSurfaceTracker();
~GpuSurfaceTracker() override;
base::Lock lock_;
SurfaceMap surface_map_;
int next_surface_id_;
DISALLOW_COPY_AND_ASSIGN(GpuSurfaceTracker);
};
} // namespace content
#endif // CONTENT_BROWSER_GPU_GPU_SURFACE_TRACKER_H_
|
