gfx/webrender_bindings/RenderAndroidSurfaceTextureHost.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_RENDERANDROIDSURFACETEXTUREHOST_H
   8 #define MOZILLA_GFX_RENDERANDROIDSURFACETEXTUREHOST_H
   9
  10 #include "mozilla/java/GeckoSurfaceTextureWrappers.h"
  11 #include "mozilla/layers/TextureHostOGL.h"
  12 #include "RenderTextureHostSWGL.h"
  13
  14 namespace mozilla {
  15
  16 namespace gfx {
  17 class DataSourceSurface;
  18 }
  19
  20 namespace wr {
  21
  22 class RenderAndroidSurfaceTextureHost final : public RenderTextureHostSWGL {
  23  public:
  24   explicit RenderAndroidSurfaceTextureHost(
  25       const java::GeckoSurfaceTexture::GlobalRef& aSurfTex, gfx::IntSize aSize,
  26       gfx::SurfaceFormat aFormat, bool aContinuousUpdate,
  27       Maybe<gfx::Matrix4x4> aTransformOverride, bool aIsRemoteTexture);
  28
  29   wr::WrExternalImage Lock(uint8_t aChannelIndex, gl::GLContext* aGL) override;
  30   void Unlock() override;
  31
  32   size_t Bytes() override {
  33     return mSize.width * mSize.height * BytesPerPixel(mFormat);
  34   }
  35
  36   void PrepareForUse() override;
  37   void NotifyForUse() override;
  38   void NotifyNotUsed() override;
  39
  40   // RenderTextureHostSWGL
  41   gfx::SurfaceFormat GetFormat() const override;
  42   gfx::ColorDepth GetColorDepth() const override {
  43     return gfx::ColorDepth::COLOR_8;
  44   }
  45   size_t GetPlaneCount() const override { return 1; }
  46   bool MapPlane(RenderCompositor* aCompositor, uint8_t aChannelIndex,
  47                 PlaneInfo& aPlaneInfo) override;
  48   void UnmapPlanes() override;
  49
  50   RenderAndroidSurfaceTextureHost* AsRenderAndroidSurfaceTextureHost()
  51       override {
  52     return this;
  53   }
  54
  55   void UpdateTexImageIfNecessary();
  56
  57   mozilla::java::GeckoSurfaceTexture::GlobalRef mSurfTex;
  58   const gfx::IntSize mSize;
  59   const gfx::SurfaceFormat mFormat;
  60   // mContinuousUpdate was used for rendering video in the past.
  61   // It is not used on current gecko.
  62   const bool mContinuousUpdate;
  63   const Maybe<gfx::Matrix4x4> mTransformOverride;
  64
  65  private:
  66   virtual ~RenderAndroidSurfaceTextureHost();
  67   bool EnsureAttachedToGLContext();
  68
  69   already_AddRefed<gfx::DataSourceSurface> ReadTexImage();
  70
  71   // Returns the UV coordinates to be used when sampling the texture, taking in
  72   // to account the SurfaceTexture's transform if applicable.
  73   std::pair<gfx::Point, gfx::Point> GetUvCoords(
  74       gfx::IntSize aTextureSize) const override;
  75
  76   enum PrepareStatus {
  77     STATUS_NONE,
  78     STATUS_MIGHT_BE_USED_BY_WR,
  79     STATUS_UPDATE_TEX_IMAGE_NEEDED,
  80     STATUS_PREPARED
  81   };
  82
  83   PrepareStatus mPrepareStatus;
  84   bool mAttachedToGLContext;
  85
  86   RefPtr<gl::GLContext> mGL;
  87
  88   RefPtr<gfx::DataSourceSurface> mReadback;
  89
  90   bool mIsRemoteTexture;
  91 };
  92
  93 }  // namespace wr
  94 }  // namespace mozilla
  95
  96 #endif  // MOZILLA_GFX_RENDERANDROIDSURFACETEXTUREHOST_H