tor-browser

The Tor Browser
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RenderEGLImageTextureHost.h (2167B)

      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