1 files changed, 121 insertions, 0 deletions
diff --git a/gfx/layers/ipc/UiCompositorControllerChild.h b/gfx/layers/ipc/UiCompositorControllerChild.h
new file mode 100644
index 0000000000..e2072713f5
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+++ b/gfx/layers/ipc/UiCompositorControllerChild.h
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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/. */
+#ifndef include_gfx_ipc_UiCompositorControllerChild_h
+#define include_gfx_ipc_UiCompositorControllerChild_h
+
+#include "mozilla/layers/PUiCompositorControllerChild.h"
+
+#include "mozilla/gfx/2D.h"
+#include "mozilla/Maybe.h"
+#include "mozilla/ipc/Shmem.h"
+#include "mozilla/layers/UiCompositorControllerParent.h"
+#include "mozilla/RefPtr.h"
+#include "nsThread.h"
+#ifdef MOZ_WIDGET_ANDROID
+#  include "SurfaceTexture.h"
+#  include "mozilla/java/CompositorSurfaceManagerWrappers.h"
+#endif
+
+class nsBaseWidget;
+
+namespace mozilla {
+namespace layers {
+
+class UiCompositorControllerChild final
+    : protected PUiCompositorControllerChild {
+  friend class PUiCompositorControllerChild;
+
+ public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(UiCompositorControllerChild)
+
+  static RefPtr<UiCompositorControllerChild> CreateForSameProcess(
+      const LayersId& aRootLayerTreeId, nsBaseWidget* aWidget);
+  static RefPtr<UiCompositorControllerChild> CreateForGPUProcess(
+      const uint64_t& aProcessToken,
+      Endpoint<PUiCompositorControllerChild>&& aEndpoint,
+      nsBaseWidget* aWidget);
+
+  bool Pause();
+  bool Resume();
+  bool ResumeAndResize(const int32_t& aX, const int32_t& aY,
+                       const int32_t& aHeight, const int32_t& aWidth);
+  bool InvalidateAndRender();
+  bool SetMaxToolbarHeight(const int32_t& aHeight);
+  bool SetFixedBottomOffset(int32_t aOffset);
+  bool ToolbarAnimatorMessageFromUI(const int32_t& aMessage);
+  bool SetDefaultClearColor(const uint32_t& aColor);
+  bool RequestScreenPixels();
+  bool EnableLayerUpdateNotifications(const bool& aEnable);
+
+  void Destroy();
+
+  bool DeallocPixelBuffer(Shmem& aMem);
+
+#ifdef MOZ_WIDGET_ANDROID
+  // Set mCompositorSurfaceManager. Must be called straight after initialization
+  // for GPU process controllers. Do not call for in-process controllers. This
+  // is separate from CreateForGPUProcess to avoid cluttering its declaration
+  // with JNI types.
+  void SetCompositorSurfaceManager(
+      java::CompositorSurfaceManager::Param aCompositorSurfaceManager);
+
+  // Send a Surface to the GPU process that a given widget ID should be
+  // composited in to. If not using a GPU process this function does nothing, as
+  // the InProcessCompositorWidget can read the Surface directly from the
+  // widget.
+  //
+  // Note that this function does not actually use the PUiCompositorController
+  // IPDL protocol, and instead uses Android's binder IPC mechanism via
+  // mCompositorSurfaceManager. It can be called from any thread.
+  void OnCompositorSurfaceChanged(int32_t aWidgetId,
+                                  java::sdk::Surface::Param aSurface);
+#endif
+
+ protected:
+  void ActorDestroy(ActorDestroyReason aWhy) override;
+  void ActorDealloc() override;
+  void ProcessingError(Result aCode, const char* aReason) override;
+  void HandleFatalError(const char* aMsg) const override;
+  mozilla::ipc::IPCResult RecvToolbarAnimatorMessageFromCompositor(
+      const int32_t& aMessage);
+  mozilla::ipc::IPCResult RecvRootFrameMetrics(const ScreenPoint& aScrollOffset,
+                                               const CSSToScreenScale& aZoom);
+  mozilla::ipc::IPCResult RecvScreenPixels(Shmem&& aMem,
+                                           const ScreenIntSize& aSize,
+                                           bool aNeedsYFlip);
+
+ private:
+  explicit UiCompositorControllerChild(const uint64_t& aProcessToken,
+                                       nsBaseWidget* aWidget);
+  virtual ~UiCompositorControllerChild();
+  void OpenForSameProcess();
+  void OpenForGPUProcess(Endpoint<PUiCompositorControllerChild>&& aEndpoint);
+  void SendCachedValues();
+
+  bool mIsOpen;
+  uint64_t mProcessToken;
+  Maybe<gfx::IntRect> mResize;
+  Maybe<int32_t> mMaxToolbarHeight;
+  Maybe<uint32_t> mDefaultClearColor;
+  Maybe<bool> mLayerUpdateEnabled;
+  RefPtr<nsBaseWidget> mWidget;
+  // Should only be set when compositor is in process.
+  RefPtr<UiCompositorControllerParent> mParent;
+
+#ifdef MOZ_WIDGET_ANDROID
+  // Android interface to send Surfaces to the GPU process. This uses Android
+  // binder rather than IPDL because Surfaces cannot be sent via IPDL. It lives
+  // here regardless because it is a conceptually logical location, even if the
+  // underlying IPC mechanism is different.
+  // This will be null if there is no GPU process.
+  mozilla::java::CompositorSurfaceManager::GlobalRef mCompositorSurfaceManager;
+#endif
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif  // include_gfx_ipc_UiCompositorControllerChild_h