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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
|
// 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_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
#define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
#include "base/basictypes.h"
#include "base/cancelable_callback.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "cc/trees/layer_tree_host_client.h"
#include "cc/trees/layer_tree_host_single_thread_client.h"
#include "content/common/content_export.h"
#include "content/common/gpu/client/context_provider_command_buffer.h"
#include "content/public/browser/android/compositor.h"
#include "gpu/command_buffer/common/capabilities.h"
#include "third_party/khronos/GLES2/gl2.h"
#include "ui/android/resources/resource_manager_impl.h"
#include "ui/android/resources/ui_resource_provider.h"
#include "ui/base/android/window_android_compositor.h"
class SkBitmap;
struct ANativeWindow;
namespace cc {
class Layer;
class LayerTreeHost;
class SurfaceIdAllocator;
}
namespace content {
class CompositorClient;
class OnscreenDisplayClient;
// -----------------------------------------------------------------------------
// Browser-side compositor that manages a tree of content and UI layers.
// -----------------------------------------------------------------------------
class CONTENT_EXPORT CompositorImpl
: public Compositor,
public cc::LayerTreeHostClient,
public cc::LayerTreeHostSingleThreadClient,
public ui::WindowAndroidCompositor {
public:
CompositorImpl(CompositorClient* client, gfx::NativeWindow root_window);
virtual ~CompositorImpl();
static bool IsInitialized();
void PopulateGpuCapabilities(gpu::Capabilities gpu_capabilities);
private:
// Compositor implementation.
virtual void SetRootLayer(scoped_refptr<cc::Layer> root) override;
virtual void SetSurface(jobject surface) override;
virtual void SetVisible(bool visible) override;
virtual void setDeviceScaleFactor(float factor) override;
virtual void SetWindowBounds(const gfx::Size& size) override;
virtual void SetHasTransparentBackground(bool flag) override;
virtual void SetNeedsComposite() override;
virtual ui::UIResourceProvider& GetUIResourceProvider() override;
virtual ui::ResourceManager& GetResourceManager() override;
// LayerTreeHostClient implementation.
virtual void WillBeginMainFrame(int frame_id) override {}
virtual void DidBeginMainFrame() override {}
virtual void BeginMainFrame(const cc::BeginFrameArgs& args) override {}
virtual void Layout() override;
virtual void ApplyViewportDeltas(
const gfx::Vector2d& inner_delta,
const gfx::Vector2d& outer_delta,
const gfx::Vector2dF& elastic_overscroll_delta,
float page_scale,
float top_controls_delta) override {}
virtual void ApplyViewportDeltas(
const gfx::Vector2d& scroll_delta,
float page_scale,
float top_controls_delta) override {}
virtual void RequestNewOutputSurface() override;
virtual void DidInitializeOutputSurface() override;
virtual void DidFailToInitializeOutputSurface() override;
virtual void WillCommit() override {}
virtual void DidCommit() override;
virtual void DidCommitAndDrawFrame() override {}
virtual void DidCompleteSwapBuffers() override;
// LayerTreeHostSingleThreadClient implementation.
virtual void ScheduleComposite() override;
virtual void ScheduleAnimation() override;
virtual void DidPostSwapBuffers() override;
virtual void DidAbortSwapBuffers() override;
// WindowAndroidCompositor implementation.
virtual void AttachLayerForReadback(scoped_refptr<cc::Layer> layer) override;
virtual void RequestCopyOfOutputOnRootLayer(
scoped_ptr<cc::CopyOutputRequest> request) override;
virtual void OnVSync(base::TimeTicks frame_time,
base::TimeDelta vsync_period) override;
virtual void SetNeedsAnimate() override;
void SetWindowSurface(ANativeWindow* window);
enum CompositingTrigger {
DO_NOT_COMPOSITE,
COMPOSITE_IMMEDIATELY,
COMPOSITE_EVENTUALLY,
};
void PostComposite(CompositingTrigger trigger);
void Composite(CompositingTrigger trigger);
void CreateOutputSurface();
bool WillCompositeThisFrame() const {
return current_composite_task_ &&
!current_composite_task_->callback().is_null();
}
bool DidCompositeThisFrame() const {
return current_composite_task_ &&
current_composite_task_->callback().is_null();
}
bool WillComposite() const {
return WillCompositeThisFrame() ||
composite_on_vsync_trigger_ != DO_NOT_COMPOSITE;
}
void CancelComposite() {
DCHECK(WillComposite());
if (WillCompositeThisFrame())
current_composite_task_->Cancel();
current_composite_task_.reset();
composite_on_vsync_trigger_ = DO_NOT_COMPOSITE;
will_composite_immediately_ = false;
}
void CreateLayerTreeHost();
// root_layer_ is the persistent internal root layer, while subroot_layer_
// is the one attached by the compositor client.
scoped_refptr<cc::Layer> root_layer_;
scoped_refptr<cc::Layer> subroot_layer_;
scoped_ptr<cc::LayerTreeHost> host_;
ui::UIResourceProvider ui_resource_provider_;
ui::ResourceManagerImpl resource_manager_;
scoped_ptr<OnscreenDisplayClient> display_client_;
scoped_ptr<cc::SurfaceIdAllocator> surface_id_allocator_;
gfx::Size size_;
bool has_transparent_background_;
float device_scale_factor_;
ANativeWindow* window_;
int surface_id_;
CompositorClient* client_;
gfx::NativeWindow root_window_;
// Used locally to track whether a call to LTH::Composite() did result in
// a posted SwapBuffers().
bool did_post_swapbuffers_;
// Used locally to inhibit ScheduleComposite() during Layout().
bool ignore_schedule_composite_;
// Whether we need to composite in general because of any invalidation or
// explicit request.
bool needs_composite_;
// Whether we need to update animations on the next composite.
bool needs_animate_;
// Whether we posted a task and are about to composite.
bool will_composite_immediately_;
// How we should schedule Composite during the next vsync.
CompositingTrigger composite_on_vsync_trigger_;
// The Composite operation scheduled for the current vsync interval.
scoped_ptr<base::CancelableClosure> current_composite_task_;
// The number of SwapBuffer calls that have not returned and ACK'd from
// the GPU thread.
unsigned int pending_swapbuffers_;
size_t num_successive_context_creation_failures_;
base::TimeDelta vsync_period_;
base::TimeTicks last_vsync_;
// If set, a pending task to request or create a new OutputSurface for the
// current host. Cancelled when |host_| gets destroyed, so we don't call
// into the new LayerTreeHost with an old LTH's request.
scoped_ptr<base::CancelableClosure> output_surface_task_for_host_;
base::WeakPtrFactory<CompositorImpl> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(CompositorImpl);
};
} // namespace content
#endif // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_IMPL_ANDROID_H_
|
