1 files changed, 88 insertions, 0 deletions
diff --git a/gfx/ipc/CanvasManagerChild.h b/gfx/ipc/CanvasManagerChild.h
new file mode 100644
index 0000000000..6369d87ada
--- /dev/null
+++ b/gfx/ipc/CanvasManagerChild.h
@@ -0,0 +1,88 @@
+/* -*- 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_CanvasManagerChild_h__
+#define _include_gfx_ipc_CanvasManagerChild_h__
+
+#include "mozilla/Atomics.h"
+#include "mozilla/gfx/PCanvasManagerChild.h"
+#include "mozilla/gfx/Types.h"
+#include "mozilla/ThreadLocal.h"
+#include <set>
+
+namespace mozilla {
+namespace dom {
+class CanvasRenderingContext2D;
+class ThreadSafeWorkerRef;
+class WorkerPrivate;
+}  // namespace dom
+
+namespace layers {
+class CanvasChild;
+class ActiveResourceTracker;
+}  // namespace layers
+
+namespace webgpu {
+class WebGPUChild;
+}  // namespace webgpu
+
+namespace gfx {
+class DataSourceSurface;
+
+class CanvasManagerChild final : public PCanvasManagerChild {
+ public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CanvasManagerChild, override);
+
+  explicit CanvasManagerChild(uint32_t aId);
+  uint32_t Id() const { return mId; }
+  already_AddRefed<DataSourceSurface> GetSnapshot(
+      uint32_t aManagerId, int32_t aProtocolId,
+      const Maybe<RemoteTextureOwnerId>& aOwnerId, SurfaceFormat aFormat,
+      bool aPremultiply, bool aYFlip);
+  void ActorDestroy(ActorDestroyReason aReason) override;
+
+  static CanvasManagerChild* Get();
+  static CanvasManagerChild* MaybeGet();
+  static void Shutdown();
+  static bool CreateParent(
+      mozilla::ipc::Endpoint<PCanvasManagerParent>&& aEndpoint);
+
+  void AddShutdownObserver(dom::CanvasRenderingContext2D* aCanvas);
+  void RemoveShutdownObserver(dom::CanvasRenderingContext2D* aCanvas);
+
+  bool IsCanvasActive() { return mActive; }
+  void EndCanvasTransaction();
+  void ClearCachedResources();
+  void DeactivateCanvas();
+  void BlockCanvas();
+
+  RefPtr<layers::CanvasChild> GetCanvasChild();
+
+  RefPtr<webgpu::WebGPUChild> GetWebGPUChild();
+
+  layers::ActiveResourceTracker* GetActiveResourceTracker();
+
+ private:
+  ~CanvasManagerChild();
+  void DestroyInternal();
+  void Destroy();
+
+  RefPtr<mozilla::dom::ThreadSafeWorkerRef> mWorkerRef;
+  RefPtr<layers::CanvasChild> mCanvasChild;
+  RefPtr<webgpu::WebGPUChild> mWebGPUChild;
+  UniquePtr<layers::ActiveResourceTracker> mActiveResourceTracker;
+  std::set<dom::CanvasRenderingContext2D*> mActiveCanvas;
+  const uint32_t mId;
+  bool mActive = true;
+  bool mBlocked = false;
+
+  static MOZ_THREAD_LOCAL(CanvasManagerChild*) sLocalManager;
+  static Atomic<uint32_t> sNextId;
+};
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif  // _include_gfx_ipc_CanvasManagerChild_h__