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