gfx/webrender_bindings/RenderEGLImageTextureHost.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_RENDEREGLIMAGETEXTUREHOST_H
   8 #define MOZILLA_GFX_RENDEREGLIMAGETEXTUREHOST_H
   9
  10 #include "mozilla/layers/TextureHostOGL.h"
  11 #include "RenderTextureHostSWGL.h"
  12
  13 namespace mozilla {
  14
  15 namespace wr {
  16
  17 // RenderEGLImageTextureHost is created only for SharedSurface_EGLImage that is
  18 // created in parent process.
  19 class RenderEGLImageTextureHost final : public RenderTextureHostSWGL {
  20  public:
  21   RenderEGLImageTextureHost(EGLImage aImage, EGLSync aSync, gfx::IntSize aSize,
  22                             gfx::SurfaceFormat aFormat);
  23
  24   wr::WrExternalImage Lock(uint8_t aChannelIndex, gl::GLContext* aGL) override;
  25   void Unlock() override;
  26   size_t Bytes() override {
  27     return mSize.width * mSize.height * BytesPerPixel(mFormat);
  28   }
  29
  30   RenderEGLImageTextureHost* AsRenderEGLImageTextureHost() override {
  31     return this;
  32   }
  33
  34   RefPtr<layers::TextureSource> CreateTextureSource(
  35       layers::TextureSourceProvider* aProvider) override;
  36
  37   // RenderTextureHostSWGL
  38   gfx::SurfaceFormat GetFormat() const override;
  39   gfx::ColorDepth GetColorDepth() const override {
  40     return gfx::ColorDepth::COLOR_8;
  41   }
  42   size_t GetPlaneCount() const override { return 1; };
  43   bool MapPlane(RenderCompositor* aCompositor, uint8_t aChannelIndex,
  44                 PlaneInfo& aPlaneInfo) override;
  45   void UnmapPlanes() override;
  46
  47  private:
  48   virtual ~RenderEGLImageTextureHost();
  49   bool CreateTextureHandle();
  50   void DeleteTextureHandle();
  51   bool WaitSync();
  52   already_AddRefed<gfx::DataSourceSurface> ReadTexImage();
  53
  54   const EGLImage mImage;
  55   EGLSync mSync;
  56   const gfx::IntSize mSize;
  57   const gfx::SurfaceFormat mFormat;
  58
  59   RefPtr<gl::GLContext> mGL;
  60   GLenum mTextureTarget;
  61   GLuint mTextureHandle;
  62   RefPtr<gfx::DataSourceSurface> mReadback;
  63 };
  64
  65 }  // namespace wr
  66 }  // namespace mozilla
  67
  68 #endif  // MOZILLA_GFX_RENDEREGLIMAGETEXTUREHOST_H