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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "VideoBridgeChild.h"
#include "VideoBridgeParent.h"
#include "CompositorThread.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/ipc/Endpoint.h"
#include "transport/runnable_utils.h"
#include "SynchronousTask.h"
namespace mozilla {
namespace layers {
StaticRefPtr<VideoBridgeChild> sVideoBridge;
/* static */
void VideoBridgeChild::StartupForGPUProcess() {
ipc::Endpoint<PVideoBridgeParent> parentPipe;
ipc::Endpoint<PVideoBridgeChild> childPipe;
PVideoBridge::CreateEndpoints(base::GetCurrentProcId(),
base::GetCurrentProcId(), &parentPipe,
&childPipe);
VideoBridgeChild::Open(std::move(childPipe));
VideoBridgeParent::Open(std::move(parentPipe), VideoBridgeSource::GpuProcess);
}
void VideoBridgeChild::Open(Endpoint<PVideoBridgeChild>&& aEndpoint) {
MOZ_ASSERT(!sVideoBridge || !sVideoBridge->CanSend());
sVideoBridge = new VideoBridgeChild();
if (!aEndpoint.Bind(sVideoBridge)) {
// We can't recover from this.
MOZ_CRASH("Failed to bind VideoBridgeChild to endpoint");
}
}
/* static */
void VideoBridgeChild::Shutdown() {
if (sVideoBridge) {
sVideoBridge->Close();
sVideoBridge = nullptr;
}
}
VideoBridgeChild::VideoBridgeChild()
: mIPDLSelfRef(this),
mThread(GetCurrentSerialEventTarget()),
mCanSend(true) {}
VideoBridgeChild::~VideoBridgeChild() = default;
VideoBridgeChild* VideoBridgeChild::GetSingleton() { return sVideoBridge; }
bool VideoBridgeChild::AllocUnsafeShmem(
size_t aSize, ipc::SharedMemory::SharedMemoryType aType,
ipc::Shmem* aShmem) {
if (!mThread->IsOnCurrentThread()) {
return DispatchAllocShmemInternal(aSize, aType, aShmem,
true); // true: unsafe
}
if (!CanSend()) {
return false;
}
return PVideoBridgeChild::AllocUnsafeShmem(aSize, aType, aShmem);
}
bool VideoBridgeChild::AllocShmem(size_t aSize,
ipc::SharedMemory::SharedMemoryType aType,
ipc::Shmem* aShmem) {
MOZ_ASSERT(CanSend());
return PVideoBridgeChild::AllocShmem(aSize, aType, aShmem);
}
void VideoBridgeChild::ProxyAllocShmemNow(SynchronousTask* aTask, size_t aSize,
SharedMemory::SharedMemoryType aType,
ipc::Shmem* aShmem, bool aUnsafe,
bool* aSuccess) {
AutoCompleteTask complete(aTask);
if (!CanSend()) {
return;
}
bool ok = false;
if (aUnsafe) {
ok = AllocUnsafeShmem(aSize, aType, aShmem);
} else {
ok = AllocShmem(aSize, aType, aShmem);
}
*aSuccess = ok;
}
bool VideoBridgeChild::DispatchAllocShmemInternal(
size_t aSize, SharedMemory::SharedMemoryType aType, ipc::Shmem* aShmem,
bool aUnsafe) {
SynchronousTask task("AllocatorProxy alloc");
bool success = false;
RefPtr<Runnable> runnable = WrapRunnable(
RefPtr<VideoBridgeChild>(this), &VideoBridgeChild::ProxyAllocShmemNow,
&task, aSize, aType, aShmem, aUnsafe, &success);
GetThread()->Dispatch(runnable.forget());
task.Wait();
return success;
}
void VideoBridgeChild::ProxyDeallocShmemNow(SynchronousTask* aTask,
ipc::Shmem* aShmem, bool* aResult) {
AutoCompleteTask complete(aTask);
if (!CanSend()) {
return;
}
*aResult = DeallocShmem(*aShmem);
}
bool VideoBridgeChild::DeallocShmem(ipc::Shmem& aShmem) {
if (GetThread()->IsOnCurrentThread()) {
if (!CanSend()) {
return false;
}
return PVideoBridgeChild::DeallocShmem(aShmem);
}
SynchronousTask task("AllocatorProxy Dealloc");
bool result = false;
RefPtr<Runnable> runnable = WrapRunnable(
RefPtr<VideoBridgeChild>(this), &VideoBridgeChild::ProxyDeallocShmemNow,
&task, &aShmem, &result);
GetThread()->Dispatch(runnable.forget());
task.Wait();
return result;
}
PTextureChild* VideoBridgeChild::AllocPTextureChild(const SurfaceDescriptor&,
const ReadLockDescriptor&,
const LayersBackend&,
const TextureFlags&,
const uint64_t& aSerial) {
MOZ_ASSERT(CanSend());
return TextureClient::CreateIPDLActor();
}
bool VideoBridgeChild::DeallocPTextureChild(PTextureChild* actor) {
return TextureClient::DestroyIPDLActor(actor);
}
void VideoBridgeChild::ActorDestroy(ActorDestroyReason aWhy) {
mCanSend = false;
}
void VideoBridgeChild::ActorDealloc() { mIPDLSelfRef = nullptr; }
PTextureChild* VideoBridgeChild::CreateTexture(
const SurfaceDescriptor& aSharedData, const ReadLockDescriptor& aReadLock,
LayersBackend aLayersBackend, TextureFlags aFlags, uint64_t aSerial,
wr::MaybeExternalImageId& aExternalImageId, nsISerialEventTarget* aTarget) {
MOZ_ASSERT(CanSend());
return SendPTextureConstructor(aSharedData, aReadLock, aLayersBackend, aFlags,
aSerial);
}
bool VideoBridgeChild::IsSameProcess() const {
return OtherPid() == base::GetCurrentProcId();
}
void VideoBridgeChild::HandleFatalError(const char* aMsg) const {
dom::ContentChild::FatalErrorIfNotUsingGPUProcess(aMsg, OtherPid());
}
} // namespace layers
} // namespace mozilla
|
