0340d8233c
Backed out changeset 05b607c3bbe6 (bug 1795296) Backed out changeset 7704291111b4 (bug 1855742) Backed out changeset db60743295fb (bug 1855742) Backed out changeset 8ed51e7d1c98 (bug 1855742) Backed out changeset 40cba2c51b1c (bug 1855742) Backed out changeset d4bfe15c07ec (bug 1855742) Backed out changeset 2061271c53e8 (bug 1855742) Backed out changeset 5b2a89a61f7f (bug 1855742) Backed out changeset 2028c7018977 (bug 1855742) Backed out changeset 13e806495fb8 (bug 1855742) Backed out changeset 4bfa0d4913a2 (bug 1855742) Backed out changeset 711b3f47e380 (bug 1855742)
93 lines
2.8 KiB
C++
93 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef MOZILLA_LAYERS_TEXTUREFORWARDER
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#define MOZILLA_LAYERS_TEXTUREFORWARDER
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#include <stdint.h> // for int32_t, uint64_t
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#include "gfxTypes.h"
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#include "mozilla/dom/ipc/IdType.h"
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#include "mozilla/ipc/ProtocolUtils.h"
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#include "mozilla/layers/LayersMessages.h" // for Edit, etc
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#include "mozilla/layers/LayersTypes.h" // for LayersBackend
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#include "mozilla/layers/TextureClient.h" // for TextureClient
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#include "mozilla/layers/KnowsCompositor.h"
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#include "nsISerialEventTarget.h"
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namespace mozilla {
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namespace layers {
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class CanvasChild;
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/**
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* An abstract interface for classes that implement the autogenerated
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* IPDL actor class. Lets us check if they are still valid for IPC.
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*/
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class LayersIPCActor {
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public:
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virtual bool IPCOpen() const { return true; }
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};
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/**
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* An abstract interface for LayersIPCActors that implement a top-level
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* IPDL protocol so also have their own channel.
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* Has their own MessageLoop for message dispatch, and can allocate
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* shmem.
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*/
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class LayersIPCChannel : public LayersIPCActor,
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public mozilla::ipc::IShmemAllocator {
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public:
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NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
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virtual bool IsSameProcess() const = 0;
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virtual bool UsesImageBridge() const { return false; }
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virtual base::ProcessId GetParentPid() const = 0;
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virtual nsISerialEventTarget* GetThread() const = 0;
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virtual FixedSizeSmallShmemSectionAllocator* GetTileLockAllocator() {
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return nullptr;
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}
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virtual void CancelWaitForNotifyNotUsed(uint64_t aTextureId) = 0;
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virtual wr::MaybeExternalImageId GetNextExternalImageId() {
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return Nothing();
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}
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protected:
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virtual ~LayersIPCChannel() = default;
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};
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/**
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* An abstract interface for classes that can allocate PTexture objects
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* across IPDL. Currently a sub-class of LayersIPCChannel for simplicity
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* since all our implementations use both, but could be independant if needed.
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*/
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class TextureForwarder : public LayersIPCChannel {
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public:
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/**
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* Create a TextureChild/Parent pair as as well as the TextureHost on the
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* parent side.
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*/
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virtual PTextureChild* CreateTexture(
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const SurfaceDescriptor& aSharedData, ReadLockDescriptor&& aReadLock,
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LayersBackend aLayersBackend, TextureFlags aFlags,
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const dom::ContentParentId& aContentId, uint64_t aSerial,
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wr::MaybeExternalImageId& aExternalImageId) = 0;
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/**
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* Returns the CanvasChild for this TextureForwarder.
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*/
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virtual already_AddRefed<CanvasChild> GetCanvasChild() { return nullptr; };
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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