gfx/webrender_bindings/RenderSharedSurfaceTextureHost.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
   7 #ifndef MOZILLA_GFX_RENDERSHAREDSURFACETEXTUREHOST_H
   8 #define MOZILLA_GFX_RENDERSHAREDSURFACETEXTUREHOST_H
   9
  10 #include "RenderTextureHostSWGL.h"
  11
  12 namespace mozilla {
  13 namespace gfx {
  14 class SourceSurfaceSharedDataWrapper;
  15 }
  16
  17 namespace wr {
  18
  19 /**
  20  * This class allows for surfaces managed by SharedSurfacesParent to be inserted
  21  * into the render texture cache by wrapping an existing surface wrapper. These
  22  * surfaces are backed by BGRA/X shared memory buffers.
  23  */
  24 class RenderSharedSurfaceTextureHost final : public RenderTextureHostSWGL {
  25  public:
  26   explicit RenderSharedSurfaceTextureHost(
  27       gfx::SourceSurfaceSharedDataWrapper* aSurface);
  28
  29   // RenderTextureHost
  30   wr::WrExternalImage Lock(uint8_t aChannelIndex, gl::GLContext* aGL) override;
  31   void Unlock() override;
  32   size_t Bytes() override;
  33
  34   // RenderTextureHostSWGL
  35   size_t GetPlaneCount() const override;
  36
  37   gfx::SurfaceFormat GetFormat() const override;
  38
  39   gfx::ColorDepth GetColorDepth() const override;
  40
  41   bool MapPlane(RenderCompositor* aCompositor, uint8_t aChannelIndex,
  42                 PlaneInfo& aPlaneInfo) override;
  43
  44   void UnmapPlanes() override;
  45
  46  private:
  47   virtual ~RenderSharedSurfaceTextureHost();
  48
  49   RefPtr<gfx::SourceSurfaceSharedDataWrapper> mSurface;
  50   gfx::DataSourceSurface::MappedSurface mMap;
  51   bool mLocked;
  52 };
  53
  54 }  // namespace wr
  55 }  // namespace mozilla
  56
  57 #endif  // MOZILLA_GFX_RENDERSHAREDSURFACETEXTUREHOST_H