1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
3 /* This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6
7 #include "VideoBridgeParent.h"
8 #include "CompositorThread.h"
9 #include "mozilla/ipc/Endpoint.h"
10 #include "mozilla/layers/TextureHost.h"
11 #include "mozilla/layers/VideoBridgeUtils.h"
12
13 namespace mozilla {
14 namespace layers {
15
16 using namespace mozilla::ipc;
17 using namespace mozilla::gfx;
18
19 static VideoBridgeParent* sVideoBridgeFromRddProcess;
20 static VideoBridgeParent* sVideoBridgeFromGpuProcess;
21
VideoBridgeParent(VideoBridgeSource aSource)22 VideoBridgeParent::VideoBridgeParent(VideoBridgeSource aSource)
23 : mCompositorThreadHolder(CompositorThreadHolder::GetSingleton()),
24 mClosed(false) {
25 mSelfRef = this;
26 switch (aSource) {
27 default:
28 MOZ_CRASH("Unhandled case");
29 case VideoBridgeSource::RddProcess:
30 sVideoBridgeFromRddProcess = this;
31 break;
32 case VideoBridgeSource::GpuProcess:
33 sVideoBridgeFromGpuProcess = this;
34 break;
35 }
36 }
37
~VideoBridgeParent()38 VideoBridgeParent::~VideoBridgeParent() {
39 if (sVideoBridgeFromRddProcess == this) {
40 sVideoBridgeFromRddProcess = nullptr;
41 }
42 if (sVideoBridgeFromGpuProcess == this) {
43 sVideoBridgeFromGpuProcess = nullptr;
44 }
45 }
46
47 /* static */
Open(Endpoint<PVideoBridgeParent> && aEndpoint,VideoBridgeSource aSource)48 void VideoBridgeParent::Open(Endpoint<PVideoBridgeParent>&& aEndpoint,
49 VideoBridgeSource aSource) {
50 RefPtr<VideoBridgeParent> parent = new VideoBridgeParent(aSource);
51
52 CompositorThread()->Dispatch(
53 NewRunnableMethod<Endpoint<PVideoBridgeParent>&&>(
54 "gfx::layers::VideoBridgeParent::Bind", parent,
55 &VideoBridgeParent::Bind, std::move(aEndpoint)));
56 }
57
Bind(Endpoint<PVideoBridgeParent> && aEndpoint)58 void VideoBridgeParent::Bind(Endpoint<PVideoBridgeParent>&& aEndpoint) {
59 if (!aEndpoint.Bind(this)) {
60 // We can't recover from this.
61 MOZ_CRASH("Failed to bind VideoBridgeParent to endpoint");
62 }
63 }
64
65 /* static */
GetSingleton(const Maybe<VideoBridgeSource> & aSource)66 VideoBridgeParent* VideoBridgeParent::GetSingleton(
67 const Maybe<VideoBridgeSource>& aSource) {
68 MOZ_ASSERT(aSource.isSome());
69 switch (aSource.value()) {
70 default:
71 MOZ_CRASH("Unhandled case");
72 case VideoBridgeSource::RddProcess:
73 MOZ_ASSERT(sVideoBridgeFromRddProcess);
74 return sVideoBridgeFromRddProcess;
75 case VideoBridgeSource::GpuProcess:
76 MOZ_ASSERT(sVideoBridgeFromGpuProcess);
77 return sVideoBridgeFromGpuProcess;
78 }
79 }
80
LookupTexture(uint64_t aSerial)81 TextureHost* VideoBridgeParent::LookupTexture(uint64_t aSerial) {
82 MOZ_DIAGNOSTIC_ASSERT(CompositorThread() &&
83 CompositorThread()->IsOnCurrentThread());
84 return TextureHost::AsTextureHost(mTextureMap[aSerial]);
85 }
86
ActorDestroy(ActorDestroyReason aWhy)87 void VideoBridgeParent::ActorDestroy(ActorDestroyReason aWhy) {
88 // Can't alloc/dealloc shmems from now on.
89 mClosed = true;
90 }
91
ActorDealloc()92 void VideoBridgeParent::ActorDealloc() {
93 mCompositorThreadHolder = nullptr;
94 mSelfRef = nullptr;
95 }
96
AllocPTextureParent(const SurfaceDescriptor & aSharedData,const ReadLockDescriptor & aReadLock,const LayersBackend & aLayersBackend,const TextureFlags & aFlags,const uint64_t & aSerial)97 PTextureParent* VideoBridgeParent::AllocPTextureParent(
98 const SurfaceDescriptor& aSharedData, const ReadLockDescriptor& aReadLock,
99 const LayersBackend& aLayersBackend, const TextureFlags& aFlags,
100 const uint64_t& aSerial) {
101 PTextureParent* parent = TextureHost::CreateIPDLActor(
102 this, aSharedData, aReadLock, aLayersBackend, aFlags, aSerial, Nothing());
103
104 if (!parent) {
105 return nullptr;
106 }
107
108 mTextureMap[aSerial] = parent;
109 return parent;
110 }
111
DeallocPTextureParent(PTextureParent * actor)112 bool VideoBridgeParent::DeallocPTextureParent(PTextureParent* actor) {
113 mTextureMap.erase(TextureHost::GetTextureSerial(actor));
114 return TextureHost::DestroyIPDLActor(actor);
115 }
116
SendAsyncMessage(const nsTArray<AsyncParentMessageData> & aMessage)117 void VideoBridgeParent::SendAsyncMessage(
118 const nsTArray<AsyncParentMessageData>& aMessage) {
119 MOZ_ASSERT(false, "AsyncMessages not supported");
120 }
121
AllocShmem(size_t aSize,ipc::SharedMemory::SharedMemoryType aType,ipc::Shmem * aShmem)122 bool VideoBridgeParent::AllocShmem(size_t aSize,
123 ipc::SharedMemory::SharedMemoryType aType,
124 ipc::Shmem* aShmem) {
125 if (mClosed) {
126 return false;
127 }
128 return PVideoBridgeParent::AllocShmem(aSize, aType, aShmem);
129 }
130
AllocUnsafeShmem(size_t aSize,ipc::SharedMemory::SharedMemoryType aType,ipc::Shmem * aShmem)131 bool VideoBridgeParent::AllocUnsafeShmem(
132 size_t aSize, ipc::SharedMemory::SharedMemoryType aType,
133 ipc::Shmem* aShmem) {
134 if (mClosed) {
135 return false;
136 }
137 return PVideoBridgeParent::AllocUnsafeShmem(aSize, aType, aShmem);
138 }
139
DeallocShmem(ipc::Shmem & aShmem)140 bool VideoBridgeParent::DeallocShmem(ipc::Shmem& aShmem) {
141 if (mClosed) {
142 return false;
143 }
144 return PVideoBridgeParent::DeallocShmem(aShmem);
145 }
146
IsSameProcess() const147 bool VideoBridgeParent::IsSameProcess() const {
148 return OtherPid() == base::GetCurrentProcId();
149 }
150
NotifyNotUsed(PTextureParent * aTexture,uint64_t aTransactionId)151 void VideoBridgeParent::NotifyNotUsed(PTextureParent* aTexture,
152 uint64_t aTransactionId) {}
153
154 } // namespace layers
155 } // namespace mozilla
156