1 files changed, 155 insertions, 0 deletions
diff --git a/gfx/layers/ipc/ImageBridgeParent.h b/gfx/layers/ipc/ImageBridgeParent.h
new file mode 100644
index 000000000..2dc705691
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+++ b/gfx/layers/ipc/ImageBridgeParent.h
@@ -0,0 +1,155 @@
+/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * 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/. */
+
+#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 "ImageContainerParent.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 InfallibleTArray
+
+class MessageLoop;
+
+namespace base {
+class Thread;
+} // namespace base
+
+namespace mozilla {
+namespace ipc {
+class Shmem;
+} // namespace ipc
+
+namespace layers {
+
+/**
+ * ImageBridgeParent is the manager Protocol of ImageContainerParent.
+ * It's purpose is mainly to setup the IPDL connection. Most of the
+ * interesting stuff is in ImageContainerParent.
+ */
+class ImageBridgeParent final : public PImageBridgeParent,
+                                public CompositableParentManager,
+                                public ShmemAllocator
+{
+public:
+  typedef InfallibleTArray<CompositableOperation> EditArray;
+  typedef InfallibleTArray<OpDestroy> OpDestroyArray;
+  typedef InfallibleTArray<EditReply> EditReplyArray;
+
+protected:
+  ImageBridgeParent(MessageLoop* aLoop, ProcessId aChildProcessId);
+
+public:
+  ~ImageBridgeParent();
+
+  /**
+   * Creates the globals of ImageBridgeParent.
+   */
+  static void Setup();
+
+  static ImageBridgeParent* CreateSameProcess();
+  static bool CreateForGPUProcess(Endpoint<PImageBridgeParent>&& aEndpoint);
+  static bool CreateForContent(Endpoint<PImageBridgeParent>&& aEndpoint);
+
+  virtual ShmemAllocator* AsShmemAllocator() override { return this; }
+
+  virtual void ActorDestroy(ActorDestroyReason aWhy) override;
+
+  // CompositableParentManager
+  virtual void SendAsyncMessage(const InfallibleTArray<AsyncParentMessageData>& aMessage) override;
+
+  virtual void NotifyNotUsed(PTextureParent* aTexture, uint64_t aTransactionId) override;
+
+  virtual base::ProcessId GetChildProcessId() override
+  {
+    return OtherPid();
+  }
+
+  // PImageBridge
+  virtual bool RecvImageBridgeThreadId(const PlatformThreadId& aThreadId) override;
+  virtual bool RecvUpdate(EditArray&& aEdits, OpDestroyArray&& aToDestroy,
+                          const uint64_t& aFwdTransactionId,
+                          EditReplyArray* aReply) override;
+  virtual bool RecvUpdateNoSwap(EditArray&& aEdits, OpDestroyArray&& aToDestroy,
+                                const uint64_t& aFwdTransactionId) override;
+
+  PCompositableParent* AllocPCompositableParent(const TextureInfo& aInfo,
+                                                PImageContainerParent* aImageContainer,
+                                                uint64_t*) override;
+  bool DeallocPCompositableParent(PCompositableParent* aActor) override;
+
+  virtual PTextureParent* AllocPTextureParent(const SurfaceDescriptor& aSharedData,
+                                              const LayersBackend& aLayersBackend,
+                                              const TextureFlags& aFlags,
+                                              const uint64_t& aSerial) override;
+  virtual bool DeallocPTextureParent(PTextureParent* actor) override;
+
+  PMediaSystemResourceManagerParent* AllocPMediaSystemResourceManagerParent() override;
+  bool DeallocPMediaSystemResourceManagerParent(PMediaSystemResourceManagerParent* aActor) override;
+  virtual PImageContainerParent* AllocPImageContainerParent() override;
+  virtual bool DeallocPImageContainerParent(PImageContainerParent* actor) override;
+
+  // Shutdown step 1
+  virtual bool RecvWillClose() override;
+
+  MessageLoop* GetMessageLoop() const { return mMessageLoop; }
+
+  // ShmemAllocator
+
+  virtual bool AllocShmem(size_t aSize,
+                          ipc::SharedMemory::SharedMemoryType aType,
+                          ipc::Shmem* aShmem) override;
+
+  virtual bool AllocUnsafeShmem(size_t aSize,
+                                ipc::SharedMemory::SharedMemoryType aType,
+                                ipc::Shmem* aShmem) override;
+
+  virtual void DeallocShmem(ipc::Shmem& aShmem) override;
+
+  virtual bool IsSameProcess() const override;
+
+  static RefPtr<ImageBridgeParent> GetInstance(ProcessId aId);
+
+  static bool NotifyImageComposites(nsTArray<ImageCompositeNotification>& aNotifications);
+
+  virtual bool UsesImageBridge() const override { return true; }
+
+  virtual bool IPCOpen() const override { return !mClosed; }
+
+protected:
+  void OnChannelConnected(int32_t pid) override;
+
+  void Bind(Endpoint<PImageBridgeParent>&& aEndpoint);
+
+private:
+  void DeferredDestroy();
+  MessageLoop* mMessageLoop;
+  // This keeps us alive until ActorDestroy(), at which point we do a
+  // deferred destruction of ourselves.
+  RefPtr<ImageBridgeParent> mSelfRef;
+
+  bool mSetChildThreadPriority;
+  bool mClosed;
+
+  /**
+   * Map of all living ImageBridgeParent instances
+   */
+  static std::map<base::ProcessId, ImageBridgeParent*> sImageBridges;
+
+  RefPtr<CompositorThreadHolder> mCompositorThreadHolder;
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif // gfx_layers_ipc_ImageBridgeParent_h_