Source code

Revision control

Copy as Markdown

Other Tools

/* -*- 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 */
#ifndef gfx_layers_ipc_ImageBridgeParent_h_
#define gfx_layers_ipc_ImageBridgeParent_h_
#include <stddef.h> // for size_t
#include <stdint.h> // for uint32_t, uint64_t
#include "CompositableTransactionParent.h"
#include "mozilla/Assertions.h" // for MOZ_ASSERT_HELPER2
#include "mozilla/Attributes.h" // for override
#include "mozilla/ipc/ProtocolUtils.h"
#include "mozilla/ipc/SharedMemory.h" // for SharedMemory, etc
#include "mozilla/layers/CompositorThread.h"
#include "mozilla/layers/PImageBridgeParent.h"
#include "nsISupportsImpl.h"
#include "nsTArrayForwardDeclare.h" // for nsTArray
namespace mozilla {
namespace ipc {
class Shmem;
} // namespace ipc
namespace layers {
struct ImageCompositeNotificationInfo;
* ImageBridgeParent is the manager Protocol of async Compositables.
class ImageBridgeParent final : public PImageBridgeParent,
public CompositableParentManager,
public mozilla::ipc::IShmemAllocator {
typedef nsTArray<CompositableOperation> EditArray;
typedef nsTArray<OpDestroy> OpDestroyArray;
ImageBridgeParent(nsISerialEventTarget* aThread, ProcessId aChildProcessId);
NS_IMETHOD_(MozExternalRefCountType) AddRef() override {
return ISurfaceAllocator::AddRef();
NS_IMETHOD_(MozExternalRefCountType) Release() override {
return ISurfaceAllocator::Release();
* Creates the globals of ImageBridgeParent.
static void Setup();
static ImageBridgeParent* CreateSameProcess();
static bool CreateForGPUProcess(Endpoint<PImageBridgeParent>&& aEndpoint);
static bool CreateForContent(Endpoint<PImageBridgeParent>&& aEndpoint);
static void Shutdown();
IShmemAllocator* AsShmemAllocator() override { return this; }
void ActorDestroy(ActorDestroyReason aWhy) override;
// CompositableParentManager
void SendAsyncMessage(
const nsTArray<AsyncParentMessageData>& aMessage) override;
void NotifyNotUsed(PTextureParent* aTexture,
uint64_t aTransactionId) override;
base::ProcessId GetChildProcessId() override { return OtherPid(); }
// PImageBridge
mozilla::ipc::IPCResult RecvUpdate(EditArray&& aEdits,
OpDestroyArray&& aToDestroy,
const uint64_t& aFwdTransactionId);
PTextureParent* AllocPTextureParent(
const SurfaceDescriptor& aSharedData, ReadLockDescriptor& aReadLock,
const LayersBackend& aLayersBackend, const TextureFlags& aFlags,
const uint64_t& aSerial,
const wr::MaybeExternalImageId& aExternalImageId);
bool DeallocPTextureParent(PTextureParent* actor);
mozilla::ipc::IPCResult RecvNewCompositable(const CompositableHandle& aHandle,
const TextureInfo& aInfo);
mozilla::ipc::IPCResult RecvReleaseCompositable(
const CompositableHandle& aHandle);
PMediaSystemResourceManagerParent* AllocPMediaSystemResourceManagerParent();
bool DeallocPMediaSystemResourceManagerParent(
PMediaSystemResourceManagerParent* aActor);
// Shutdown step 1
mozilla::ipc::IPCResult RecvWillClose();
nsISerialEventTarget* GetThread() const { return mThread; }
// IShmemAllocator
bool AllocShmem(size_t aSize, ipc::Shmem* aShmem) override;
bool AllocUnsafeShmem(size_t aSize, ipc::Shmem* aShmem) override;
bool DeallocShmem(ipc::Shmem& aShmem) override;
bool IsSameProcess() const override;
static already_AddRefed<ImageBridgeParent> GetInstance(ProcessId aId);
static bool NotifyImageComposites(
nsTArray<ImageCompositeNotificationInfo>& aNotifications);
bool UsesImageBridge() const override { return true; }
bool IPCOpen() const override { return !mClosed; }
void Bind(Endpoint<PImageBridgeParent>&& aEndpoint);
virtual ~ImageBridgeParent();
static void ShutdownInternal();
void DeferredDestroy();
nsCOMPtr<nsISerialEventTarget> mThread;
bool mClosed;
* Map of all living ImageBridgeParent instances
typedef std::map<base::ProcessId, ImageBridgeParent*> ImageBridgeMap;
static ImageBridgeMap sImageBridges;
RefPtr<CompositorThreadHolder> mCompositorThreadHolder;
} // namespace layers
} // namespace mozilla
#endif // gfx_layers_ipc_ImageBridgeParent_h_