gfx/layers/GLImages.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 GFX_GLIMAGES_H
   8 #define GFX_GLIMAGES_H
   9
  10 #include "GLContextTypes.h"
  11 #include "GLTypes.h"
  12 #include "ImageContainer.h"      // for Image
  13 #include "ImageTypes.h"          // for ImageFormat::SHARED_GLTEXTURE
  14 #include "nsCOMPtr.h"            // for already_AddRefed
  15 #include "mozilla/Maybe.h"       // for Maybe
  16 #include "mozilla/gfx/Matrix.h"  // for Matrix4x4
  17 #include "mozilla/gfx/Point.h"   // for IntSize
  18
  19 #ifdef MOZ_WIDGET_ANDROID
  20 #  include "AndroidSurfaceTexture.h"
  21 #endif
  22
  23 namespace mozilla {
  24 namespace layers {
  25
  26 class GLImage : public Image {
  27  public:
  28   explicit GLImage(ImageFormat aFormat) : Image(nullptr, aFormat) {}
  29
  30   already_AddRefed<gfx::SourceSurface> GetAsSourceSurface() override;
  31
  32   GLImage* AsGLImage() override { return this; }
  33 };
  34
  35 #ifdef MOZ_WIDGET_ANDROID
  36
  37 class SurfaceTextureImage : public GLImage {
  38  public:
  39   class SetCurrentCallback {
  40    public:
  41     virtual void operator()(void) = 0;
  42     virtual ~SetCurrentCallback() {}
  43   };
  44
  45   SurfaceTextureImage(AndroidSurfaceTextureHandle aHandle,
  46                       const gfx::IntSize& aSize, bool aContinuous,
  47                       gl::OriginPos aOriginPos, bool aHasAlpha,
  48                       Maybe<gfx::Matrix4x4> aTransformOverride);
  49
  50   gfx::IntSize GetSize() const override { return mSize; }
  51   AndroidSurfaceTextureHandle GetHandle() const { return mHandle; }
  52   bool GetContinuous() const { return mContinuous; }
  53   gl::OriginPos GetOriginPos() const { return mOriginPos; }
  54   bool GetHasAlpha() const { return mHasAlpha; }
  55   const Maybe<gfx::Matrix4x4>& GetTransformOverride() const {
  56     return mTransformOverride;
  57   }
  58
  59   already_AddRefed<gfx::SourceSurface> GetAsSourceSurface() override {
  60     // We can implement this, but currently don't want to because it will cause
  61     // the SurfaceTexture to be permanently bound to the snapshot readback
  62     // context.
  63     return nullptr;
  64   }
  65
  66   SurfaceTextureImage* AsSurfaceTextureImage() override { return this; }
  67
  68   Maybe<SurfaceDescriptor> GetDesc() override;
  69
  70   void RegisterSetCurrentCallback(UniquePtr<SetCurrentCallback> aCallback) {
  71     mSetCurrentCallback = std::move(aCallback);
  72   }
  73
  74   void OnSetCurrent() {
  75     if (mSetCurrentCallback) {
  76       (*mSetCurrentCallback)();
  77       mSetCurrentCallback.reset();
  78     }
  79   }
  80
  81  private:
  82   AndroidSurfaceTextureHandle mHandle;
  83   gfx::IntSize mSize;
  84   bool mContinuous;
  85   gl::OriginPos mOriginPos;
  86   const bool mHasAlpha;
  87   const Maybe<gfx::Matrix4x4> mTransformOverride;
  88   UniquePtr<SetCurrentCallback> mSetCurrentCallback;
  89 };
  90
  91 #endif  // MOZ_WIDGET_ANDROID
  92
  93 }  // namespace layers
  94 }  // namespace mozilla
  95
  96 #endif  // GFX_GLIMAGES_H