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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /gfx/layers/ipc/VideoBridgeParent.cpp
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/layers/ipc/VideoBridgeParent.cpp')
-rw-r--r--gfx/layers/ipc/VideoBridgeParent.cpp321
1 files changed, 321 insertions, 0 deletions
diff --git a/gfx/layers/ipc/VideoBridgeParent.cpp b/gfx/layers/ipc/VideoBridgeParent.cpp
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index 0000000000..6413c27bc1
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+++ b/gfx/layers/ipc/VideoBridgeParent.cpp
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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
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#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::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)
+ : mMonitor("VideoBridgeParent::mMonitor"),
+ 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 */
+RefPtr<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 RefPtr{(*videoBridgeFromProcess)[aSource.value()]};
+ default:
+ MOZ_CRASH("Unhandled case");
+ }
+}
+
+already_AddRefed<TextureHost> VideoBridgeParent::LookupTextureAsync(
+ const dom::ContentParentId& aContentId, uint64_t aSerial) {
+ MonitorAutoLock lock(mMonitor);
+
+ // We raced shutting down the actor.
+ if (NS_WARN_IF(!mCompositorThreadHolder)) {
+ MOZ_ASSERT_UNREACHABLE("Called on destroyed VideoBridgeParent actor!");
+ return nullptr;
+ }
+
+ MOZ_ASSERT(mCompositorThreadHolder->IsInThread());
+
+ auto* actor = mTextureMap[aSerial];
+ if (NS_WARN_IF(!actor)) {
+ return nullptr;
+ }
+
+ if (NS_WARN_IF(aContentId != TextureHost::GetTextureContentId(actor))) {
+ return nullptr;
+ }
+
+ return do_AddRef(TextureHost::AsTextureHost(actor));
+}
+
+already_AddRefed<TextureHost> VideoBridgeParent::LookupTexture(
+ const dom::ContentParentId& aContentId, uint64_t aSerial) {
+ MonitorAutoLock lock(mMonitor);
+
+ // We raced shutting down the actor.
+ if (NS_WARN_IF(!mCompositorThreadHolder)) {
+ return nullptr;
+ }
+
+ auto* actor = mTextureMap[aSerial];
+ if (actor) {
+ if (NS_WARN_IF(aContentId != TextureHost::GetTextureContentId(actor))) {
+ return nullptr;
+ }
+ return do_AddRef(TextureHost::AsTextureHost(actor));
+ }
+
+ // We cannot block on the Compositor thread because that is the thread we get
+ // the IPC calls for the update on.
+ if (NS_WARN_IF(mCompositorThreadHolder->IsInThread())) {
+ MOZ_ASSERT_UNREACHABLE("Should never call on Compositor thread!");
+ return nullptr;
+ }
+
+ // Canvas may have raced ahead of VideoBridgeParent setting up the
+ // PTextureParent IPDL object. This should happen only rarely/briefly. Since
+ // we know that the PTexture constructor must be in the send queue, we can
+ // block until the IPDL ping comes back.
+ bool complete = false;
+
+ auto resolve = [&](void_t&&) {
+ MonitorAutoLock lock(mMonitor);
+ complete = true;
+ lock.NotifyAll();
+ };
+
+ auto reject = [&](ipc::ResponseRejectReason) {
+ MonitorAutoLock lock(mMonitor);
+ complete = true;
+ lock.NotifyAll();
+ };
+
+ mCompositorThreadHolder->Dispatch(
+ NS_NewRunnableFunction("VideoBridgeParent::LookupTexture", [&]() {
+ if (CanSend()) {
+ SendPing(std::move(resolve), std::move(reject));
+ } else {
+ reject(ipc::ResponseRejectReason::ChannelClosed);
+ }
+ }));
+
+ while (!complete) {
+ lock.Wait();
+ }
+
+ actor = mTextureMap[aSerial];
+ if (!actor) {
+ return nullptr;
+ }
+
+ if (NS_WARN_IF(aContentId != TextureHost::GetTextureContentId(actor))) {
+ return nullptr;
+ }
+
+ return do_AddRef(TextureHost::AsTextureHost(actor));
+}
+
+void VideoBridgeParent::ActorDestroy(ActorDestroyReason aWhy) {
+ bool shutdown = sVideoBridgeParentShutDown;
+
+ if (!shutdown && aWhy == AbnormalShutdown) {
+ gfxCriticalNote
+ << "VideoBridgeParent receives IPC close with reason=AbnormalShutdown";
+ }
+
+ {
+ MonitorAutoLock lock(mMonitor);
+ // Can't alloc/dealloc shmems from now on.
+ mClosed = true;
+ mCompositorThreadHolder = nullptr;
+ }
+}
+
+/* static */
+void VideoBridgeParent::Shutdown() {
+ CompositorThread()->Dispatch(NS_NewRunnableFunction(
+ "VideoBridgeParent::Shutdown",
+ []() -> void { VideoBridgeParent::ShutdownInternal(); }));
+}
+
+/* static */
+void VideoBridgeParent::ShutdownInternal() {
+ sVideoBridgeParentShutDown = true;
+
+ nsTArray<RefPtr<VideoBridgeParent>> bridges;
+
+ // We don't want to hold the sVideoBridgeFromProcess lock when the
+ // VideoBridgeParent objects are closed without holding a reference to them.
+ {
+ auto videoBridgeFromProcess = sVideoBridgeFromProcess.Lock();
+ for (auto& bridgeParent : *videoBridgeFromProcess) {
+ if (bridgeParent) {
+ bridges.AppendElement(bridgeParent);
+ }
+ }
+ }
+
+ for (auto& bridge : bridges) {
+ bridge->Close();
+ }
+}
+
+/* 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();
+ }
+ }
+}
+
+PTextureParent* VideoBridgeParent::AllocPTextureParent(
+ const SurfaceDescriptor& aSharedData, ReadLockDescriptor& aReadLock,
+ const LayersBackend& aLayersBackend, const TextureFlags& aFlags,
+ const dom::ContentParentId& aContentId, const uint64_t& aSerial) {
+ PTextureParent* parent = TextureHost::CreateIPDLActor(
+ this, aSharedData, std::move(aReadLock), aLayersBackend, aFlags,
+ aContentId, aSerial, Nothing());
+
+ if (!parent) {
+ return nullptr;
+ }
+
+ MonitorAutoLock lock(mMonitor);
+ mTextureMap[aSerial] = parent;
+ return parent;
+}
+
+bool VideoBridgeParent::DeallocPTextureParent(PTextureParent* actor) {
+ MonitorAutoLock lock(mMonitor);
+ 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) {
+ {
+ MonitorAutoLock lock(mMonitor);
+ if (mClosed) {
+ return false;
+ }
+ }
+ return PVideoBridgeParent::AllocShmem(aSize, aShmem);
+}
+
+bool VideoBridgeParent::AllocUnsafeShmem(size_t aSize, ipc::Shmem* aShmem) {
+ {
+ MonitorAutoLock lock(mMonitor);
+ if (mClosed) {
+ return false;
+ }
+ }
+ return PVideoBridgeParent::AllocUnsafeShmem(aSize, aShmem);
+}
+
+bool VideoBridgeParent::DeallocShmem(ipc::Shmem& aShmem) {
+ {
+ MonitorAutoLock lock(mMonitor);
+ if (mCompositorThreadHolder && !mCompositorThreadHolder->IsInThread()) {
+ mCompositorThreadHolder->Dispatch(NS_NewRunnableFunction(
+ "gfx::layers::VideoBridgeParent::DeallocShmem",
+ [self = RefPtr{this}, shmem = std::move(aShmem)]() mutable {
+ self->DeallocShmem(shmem);
+ }));
+ return true;
+ }
+
+ if (mClosed) {
+ return false;
+ }
+ }
+
+ return PVideoBridgeParent::DeallocShmem(aShmem);
+}
+
+bool VideoBridgeParent::IsSameProcess() const {
+ return OtherPid() == base::GetCurrentProcId();
+}
+
+void VideoBridgeParent::NotifyNotUsed(PTextureParent* aTexture,
+ uint64_t aTransactionId) {}
+
+} // namespace mozilla::layers