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
|
// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/platform/graphics/begin_frame_provider.h"
#include <utility>
#include "base/functional/bind.h"
#include "base/logging.h"
#include "base/task/single_thread_task_runner.h"
#include "base/trace_event/trace_event.h"
#include "services/viz/public/mojom/compositing/frame_timing_details.mojom-blink.h"
#include "third_party/blink/public/common/thread_safe_browser_interface_broker_proxy.h"
#include "third_party/blink/public/platform/platform.h"
#include "third_party/blink/renderer/platform/graphics/begin_frame_provider_params.h"
#include "third_party/blink/renderer/platform/mojo/mojo_binding_context.h"
#include "third_party/blink/renderer/platform/scheduler/public/thread_scheduler.h"
#include "third_party/blink/renderer/platform/wtf/functional.h"
#include "ui/gfx/mojom/presentation_feedback.mojom-blink.h"
namespace blink {
BeginFrameProvider::BeginFrameProvider(
const BeginFrameProviderParams& begin_frame_provider_params,
BeginFrameProviderClient* client,
ContextLifecycleNotifier* context)
: needs_begin_frame_(false),
requested_needs_begin_frame_(false),
cfs_receiver_(this, context),
efs_receiver_(this, context),
frame_sink_id_(begin_frame_provider_params.frame_sink_id),
parent_frame_sink_id_(begin_frame_provider_params.parent_frame_sink_id),
compositor_frame_sink_(context),
begin_frame_client_(client) {}
void BeginFrameProvider::ResetCompositorFrameSink() {
compositor_frame_sink_.reset();
efs_receiver_.reset();
cfs_receiver_.reset();
if (needs_begin_frame_) {
needs_begin_frame_ = false;
RequestBeginFrame();
}
}
void BeginFrameProvider::OnMojoConnectionError(uint32_t custom_reason,
const std::string& description) {
if (custom_reason) {
DLOG(ERROR) << description;
}
ResetCompositorFrameSink();
}
bool BeginFrameProvider::IsValidFrameProvider() {
if (!parent_frame_sink_id_.is_valid() || !frame_sink_id_.is_valid()) {
return false;
}
return true;
}
void BeginFrameProvider::CreateCompositorFrameSinkIfNeeded() {
if (!parent_frame_sink_id_.is_valid() || !frame_sink_id_.is_valid()) {
return;
}
if (compositor_frame_sink_.is_bound())
return;
// Once we are using RAF, this thread is driving user interactive display
// updates. Update priority accordingly.
base::PlatformThread::SetCurrentThreadType(
base::ThreadType::kDisplayCritical);
mojo::Remote<mojom::blink::EmbeddedFrameSinkProvider> provider;
Platform::Current()->GetBrowserInterfaceBroker()->GetInterface(
provider.BindNewPipeAndPassReceiver());
scoped_refptr<base::SingleThreadTaskRunner> task_runner =
begin_frame_client_->GetCompositorTaskRunner();
provider->CreateSimpleCompositorFrameSink(
parent_frame_sink_id_, frame_sink_id_,
efs_receiver_.BindNewPipeAndPassRemote(task_runner),
cfs_receiver_.BindNewPipeAndPassRemote(task_runner),
compositor_frame_sink_.BindNewPipeAndPassReceiver(task_runner));
compositor_frame_sink_.set_disconnect_with_reason_handler(WTF::BindOnce(
&BeginFrameProvider::OnMojoConnectionError, WrapWeakPersistent(this)));
}
void BeginFrameProvider::RequestBeginFrame() {
requested_needs_begin_frame_ = true;
if (needs_begin_frame_) {
return;
}
CreateCompositorFrameSinkIfNeeded();
needs_begin_frame_ = true;
compositor_frame_sink_->SetNeedsBeginFrame(true);
}
void BeginFrameProvider::OnBeginFrame(
const viz::BeginFrameArgs& args,
const WTF::HashMap<uint32_t, viz::FrameTimingDetails>&,
WTF::Vector<viz::ReturnedResource> resources) {
TRACE_EVENT_WITH_FLOW0("blink", "BeginFrameProvider::OnBeginFrame",
TRACE_ID_GLOBAL(args.trace_id),
TRACE_EVENT_FLAG_FLOW_IN | TRACE_EVENT_FLAG_FLOW_OUT);
if (args.deadline < base::TimeTicks::Now()) {
compositor_frame_sink_->DidNotProduceFrame(viz::BeginFrameAck(args, false));
return;
}
// If there was no need for a BeginFrame, just skip it.
if (needs_begin_frame_ && requested_needs_begin_frame_) {
requested_needs_begin_frame_ = false;
begin_frame_client_->BeginFrame(args);
} else {
if (!requested_needs_begin_frame_) {
needs_begin_frame_ = false;
compositor_frame_sink_->SetNeedsBeginFrame(false);
}
}
}
void BeginFrameProvider::FinishBeginFrame(const viz::BeginFrameArgs& args) {
// It appears that we can lose our existing Mojo Connection, and previously
// posted tasks can attempt to use the unbounded `compositor_frame_sink_`.
// If that occurs return so that we don't crash.
if (!compositor_frame_sink_.is_bound()) {
return;
}
compositor_frame_sink_->DidNotProduceFrame(viz::BeginFrameAck(args, false));
}
void BeginFrameProvider::Trace(Visitor* visitor) const {
visitor->Trace(cfs_receiver_);
visitor->Trace(efs_receiver_);
visitor->Trace(compositor_frame_sink_);
visitor->Trace(begin_frame_client_);
}
} // namespace blink
|
