gfx/gl/SharedSurfaceEGL.h

   1 /* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef SHARED_SURFACE_EGL_H_
   7 #define SHARED_SURFACE_EGL_H_
   8
   9 #include "mozilla/Attributes.h"
  10 #include "mozilla/Mutex.h"
  11 #include "nsAutoPtr.h"
  12 #include "SharedSurface.h"
  13
  14 namespace mozilla {
  15 namespace gl {
  16
  17 class GLContext;
  18 class GLLibraryEGL;
  19 class TextureGarbageBin;
  20
  21 class SharedSurface_EGLImage
  22     : public SharedSurface
  23 {
  24 public:
  25     static UniquePtr<SharedSurface_EGLImage> Create(GLContext* prodGL,
  26                                                     const GLFormats& formats,
  27                                                     const gfx::IntSize& size,
  28                                                     bool hasAlpha,
  29                                                     EGLContext context);
  30
  31     static SharedSurface_EGLImage* Cast(SharedSurface* surf) {
  32         MOZ_ASSERT(surf->mType == SharedSurfaceType::EGLImageShare);
  33
  34         return (SharedSurface_EGLImage*)surf;
  35     }
  36
  37     static bool HasExtensions(GLLibraryEGL* egl, GLContext* gl);
  38
  39 protected:
  40     mutable Mutex mMutex;
  41     GLLibraryEGL* const mEGL;
  42     const GLFormats mFormats;
  43     GLuint mProdTex;
  44 public:
  45     const EGLImage mImage;
  46 protected:
  47     GLContext* mCurConsGL;
  48     GLuint mConsTex;
  49     nsRefPtr<TextureGarbageBin> mGarbageBin;
  50     EGLSync mSync;
  51
  52     SharedSurface_EGLImage(GLContext* gl,
  53                            GLLibraryEGL* egl,
  54                            const gfx::IntSize& size,
  55                            bool hasAlpha,
  56                            const GLFormats& formats,
  57                            GLuint prodTex,
  58                            EGLImage image);
  59
  60     EGLDisplay Display() const;
  61     void UpdateProdTexture(const MutexAutoLock& curAutoLock);
  62
  63 public:
  64     virtual ~SharedSurface_EGLImage();
  65
  66     virtual void LockProdImpl() MOZ_OVERRIDE {}
  67     virtual void UnlockProdImpl() MOZ_OVERRIDE {}
  68
  69     virtual void Fence() MOZ_OVERRIDE;
  70     virtual bool WaitSync() MOZ_OVERRIDE;
  71     virtual bool PollSync() MOZ_OVERRIDE;
  72
  73     virtual GLuint ProdTexture() MOZ_OVERRIDE {
  74       return mProdTex;
  75     }
  76
  77     // Implementation-specific functions below:
  78     // Returns texture and target
  79     void AcquireConsumerTexture(GLContext* consGL, GLuint* out_texture, GLuint* out_target);
  80 };
  81
  82
  83
  84 class SurfaceFactory_EGLImage
  85     : public SurfaceFactory
  86 {
  87 public:
  88     // Fallible:
  89     static UniquePtr<SurfaceFactory_EGLImage> Create(GLContext* prodGL,
  90                                                      const SurfaceCaps& caps);
  91
  92 protected:
  93     const EGLContext mContext;
  94
  95     SurfaceFactory_EGLImage(GLContext* prodGL,
  96                             EGLContext context,
  97                             const SurfaceCaps& caps)
  98         : SurfaceFactory(prodGL, SharedSurfaceType::EGLImageShare, caps)
  99         , mContext(context)
 100     {}
 101
 102 public:
 103     virtual UniquePtr<SharedSurface> CreateShared(const gfx::IntSize& size) MOZ_OVERRIDE {
 104         bool hasAlpha = mReadCaps.alpha;
 105         return SharedSurface_EGLImage::Create(mGL, mFormats, size, hasAlpha, mContext);
 106     }
 107 };
 108
 109 } /* namespace gfx */
 110 } /* namespace mozilla */
 111
 112 #endif /* SHARED_SURFACE_EGL_H_ */