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/* -*- 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
#include "VideoBridgeParent.h"
#include "CompositorThread.h"
#include "mozilla/DataMutex.h"
#include "mozilla/ipc/Endpoint.h"
#include "mozilla/layers/TextureHost.h"
#include "mozilla/layers/VideoBridgeUtils.h"
#include "mozilla/webrender/RenderThread.h"
namespace mozilla {
namespace layers {
using namespace mozilla::ipc;
using namespace mozilla::gfx;
using VideoBridgeTable =
EnumeratedArray<VideoBridgeSource, VideoBridgeSource::_Count,
VideoBridgeParent*>;
static StaticDataMutex<VideoBridgeTable> sVideoBridgeFromProcess(
"VideoBridges");
static Atomic<bool> sVideoBridgeParentShutDown(false);
VideoBridgeParent::VideoBridgeParent(VideoBridgeSource aSource)
: mCompositorThreadHolder(CompositorThreadHolder::GetSingleton()),
mClosed(false) {
auto videoBridgeFromProcess = sVideoBridgeFromProcess.Lock();
switch (aSource) {
case VideoBridgeSource::RddProcess:
case VideoBridgeSource::GpuProcess:
case VideoBridgeSource::MFMediaEngineCDMProcess:
(*videoBridgeFromProcess)[aSource] = this;
break;
default:
MOZ_CRASH("Unhandled case");
}
}
VideoBridgeParent::~VideoBridgeParent() {
auto videoBridgeFromProcess = sVideoBridgeFromProcess.Lock();
for (auto& bridgeParent : *videoBridgeFromProcess) {
if (bridgeParent == this) {
bridgeParent = nullptr;
}
}
}
/* static */
void VideoBridgeParent::Open(Endpoint<PVideoBridgeParent>&& aEndpoint,
VideoBridgeSource aSource) {
RefPtr<VideoBridgeParent> parent = new VideoBridgeParent(aSource);
CompositorThread()->Dispatch(
NewRunnableMethod<Endpoint<PVideoBridgeParent>&&>(
"gfx::layers::VideoBridgeParent::Bind", parent,
&VideoBridgeParent::Bind, std::move(aEndpoint)));
}
void VideoBridgeParent::Bind(Endpoint<PVideoBridgeParent>&& aEndpoint) {
if (!aEndpoint.Bind(this)) {
// We can't recover from this.
MOZ_CRASH("Failed to bind VideoBridgeParent to endpoint");
}
}
/* static */
VideoBridgeParent* VideoBridgeParent::GetSingleton(
const Maybe<VideoBridgeSource>& aSource) {
MOZ_ASSERT(aSource.isSome());
auto videoBridgeFromProcess = sVideoBridgeFromProcess.Lock();
switch (aSource.value()) {
case VideoBridgeSource::RddProcess:
case VideoBridgeSource::GpuProcess:
case VideoBridgeSource::MFMediaEngineCDMProcess:
MOZ_ASSERT((*videoBridgeFromProcess)[aSource.value()]);
return (*videoBridgeFromProcess)[aSource.value()];
default:
MOZ_CRASH("Unhandled case");
}
}
TextureHost* VideoBridgeParent::LookupTexture(uint64_t aSerial) {
MOZ_DIAGNOSTIC_ASSERT(CompositorThread() &&
CompositorThread()->IsOnCurrentThread());
return TextureHost::AsTextureHost(mTextureMap[aSerial]);
}
void VideoBridgeParent::ActorDestroy(ActorDestroyReason aWhy) {
bool shutdown = sVideoBridgeParentShutDown;
if (!shutdown && aWhy == AbnormalShutdown) {
gfxCriticalNote
<< "VideoBridgeParent receives IPC close with reason=AbnormalShutdown";
}
// Can't alloc/dealloc shmems from now on.
mClosed = true;
mCompositorThreadHolder = nullptr;
ReleaseCompositorThread();
}
/* static */
void VideoBridgeParent::Shutdown() {
sVideoBridgeParentShutDown = true;
auto videoBridgeFromProcess = sVideoBridgeFromProcess.Lock();
for (auto& bridgeParent : *videoBridgeFromProcess) {
if (bridgeParent) {
bridgeParent->ReleaseCompositorThread();
}
}
}
/* static */
void VideoBridgeParent::UnregisterExternalImages() {
MOZ_ASSERT(sVideoBridgeParentShutDown);
auto videoBridgeFromProcess = sVideoBridgeFromProcess.Lock();
for (auto& bridgeParent : *videoBridgeFromProcess) {
if (bridgeParent) {
bridgeParent->DoUnregisterExternalImages();
}
}
}
void VideoBridgeParent::DoUnregisterExternalImages() {
const ManagedContainer<PTextureParent>& textures = ManagedPTextureParent();
for (const auto& key : textures) {
RefPtr<TextureHost> texture = TextureHost::AsTextureHost(key);
if (texture) {
texture->MaybeDestroyRenderTexture();
}
}
}
void VideoBridgeParent::ReleaseCompositorThread() {
mCompositorThreadHolder = nullptr;
}
PTextureParent* VideoBridgeParent::AllocPTextureParent(
const SurfaceDescriptor& aSharedData, ReadLockDescriptor& aReadLock,
const LayersBackend& aLayersBackend, const TextureFlags& aFlags,
const uint64_t& aSerial) {
PTextureParent* parent =
TextureHost::CreateIPDLActor(this, aSharedData, std::move(aReadLock),
aLayersBackend, aFlags, aSerial, Nothing());
if (!parent) {
return nullptr;
}
mTextureMap[aSerial] = parent;
return parent;
}
bool VideoBridgeParent::DeallocPTextureParent(PTextureParent* actor) {
mTextureMap.erase(TextureHost::GetTextureSerial(actor));
return TextureHost::DestroyIPDLActor(actor);
}
void VideoBridgeParent::SendAsyncMessage(
const nsTArray<AsyncParentMessageData>& aMessage) {
MOZ_ASSERT(false, "AsyncMessages not supported");
}
bool VideoBridgeParent::AllocShmem(size_t aSize, ipc::Shmem* aShmem) {
if (mClosed) {
return false;
}
return PVideoBridgeParent::AllocShmem(aSize, aShmem);
}
bool VideoBridgeParent::AllocUnsafeShmem(size_t aSize, ipc::Shmem* aShmem) {
if (mClosed) {
return false;
}
return PVideoBridgeParent::AllocUnsafeShmem(aSize, aShmem);
}
bool VideoBridgeParent::DeallocShmem(ipc::Shmem& aShmem) {
if (mClosed) {
return false;
}
return PVideoBridgeParent::DeallocShmem(aShmem);
}
bool VideoBridgeParent::IsSameProcess() const {
return OtherPid() == base::GetCurrentProcId();
}
void VideoBridgeParent::NotifyNotUsed(PTextureParent* aTexture,
uint64_t aTransactionId) {}
void VideoBridgeParent::OnChannelError() {
bool shutdown = sVideoBridgeParentShutDown;
if (!shutdown) {
// Destory RenderBufferTextureHosts. Shmems of ShmemTextureHosts are going
// to be destroyed
std::vector<wr::ExternalImageId> ids;
auto& ptextures = ManagedPTextureParent();
for (const auto& ptexture : ptextures) {
RefPtr<TextureHost> texture = TextureHost::AsTextureHost(ptexture);
if (texture && texture->AsShmemTextureHost() &&
texture->GetMaybeExternalImageId().isSome()) {
ids.emplace_back(texture->GetMaybeExternalImageId().ref());
}
}
if (!ids.empty()) {
wr::RenderThread::Get()->DestroyExternalImagesSyncWait(std::move(ids));
}
}
PVideoBridgeParent::OnChannelError();
}
} // namespace layers
} // namespace mozilla