gfx/ipc/CanvasManagerChild.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6 #ifndef _include_gfx_ipc_CanvasManagerChild_h__
   7 #define _include_gfx_ipc_CanvasManagerChild_h__
   8
   9 #include "mozilla/Atomics.h"
  10 #include "mozilla/gfx/PCanvasManagerChild.h"
  11 #include "mozilla/gfx/Types.h"
  12 #include "mozilla/ThreadLocal.h"
  13
  14 namespace mozilla {
  15 namespace dom {
  16 class IPCWorkerRef;
  17 class WorkerPrivate;
  18 }  // namespace dom
  19
  20 namespace webgpu {
  21 class WebGPUChild;
  22 }  // namespace webgpu
  23
  24 namespace gfx {
  25 class DataSourceSurface;
  26
  27 class CanvasManagerChild final : public PCanvasManagerChild {
  28  public:
  29   NS_INLINE_DECL_THREADSAFE_REFCOUNTING(CanvasManagerChild, override);
  30
  31   explicit CanvasManagerChild(uint32_t aId);
  32   uint32_t Id() const { return mId; }
  33   already_AddRefed<DataSourceSurface> GetSnapshot(
  34       uint32_t aManagerId, int32_t aProtocolId,
  35       const layers::CompositableHandle& aHandle, SurfaceFormat aFormat,
  36       bool aPremultiply, bool aYFlip);
  37   void ActorDestroy(ActorDestroyReason aReason) override;
  38
  39   static CanvasManagerChild* Get();
  40   static void Shutdown();
  41   static bool CreateParent(
  42       mozilla::ipc::Endpoint<PCanvasManagerParent>&& aEndpoint);
  43
  44   RefPtr<webgpu::WebGPUChild> GetWebGPUChild();
  45
  46  private:
  47   ~CanvasManagerChild();
  48   void Destroy();
  49
  50   RefPtr<mozilla::dom::IPCWorkerRef> mWorkerRef;
  51   RefPtr<webgpu::WebGPUChild> mWebGPUChild;
  52   const uint32_t mId;
  53
  54   static MOZ_THREAD_LOCAL(CanvasManagerChild*) sLocalManager;
  55   static Atomic<uint32_t> sNextId;
  56 };
  57
  58 }  // namespace gfx
  59 }  // namespace mozilla
  60
  61 #endif  // _include_gfx_ipc_CanvasManagerChild_h__